CN114134607A - High-elasticity and cutting-resistant composite yarn, preparation method thereof and cutting-resistant fabric containing composite yarn - Google Patents
High-elasticity and cutting-resistant composite yarn, preparation method thereof and cutting-resistant fabric containing composite yarn Download PDFInfo
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/442—Cut or abrasion resistant yarns or threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
- D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
- D10B2501/04—Outerwear; Protective garments
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention belongs to the technical field of anti-cutting yarns, and provides a high-elasticity and cutting-resistant composite yarn which is of a sheath-core structure and comprises sheath yarns and core yarns; the sheath yarn is an ultra-high molecular weight polyethylene filament, and the core yarn is a spandex filament; the mass ratio of the ultra-high molecular weight polyethylene filaments to the spandex filaments is 68-85: 15 to 32. The invention also provides a preparation method of the high-elasticity and cutting-resistant composite yarn and a cutting-resistant fabric containing the composite yarn. The ultra-high molecular weight polyethylene filament is a high-performance fiber, has the advantages of high tensile breaking strength and cutting resistance, and has excellent contraction and tensile elasticity; the composite yarn has good cutting resistance, high elasticity and mechanical property; the prepared anti-cutting fabric has the advantages of light weight, flexibility, good anti-cutting performance and capability of being printed and dyed on the surface.
Description
Technical Field
The invention relates to the technical field of anti-cutting yarns, in particular to a high-elasticity and anti-cutting composite yarn, a preparation method thereof and an anti-cutting fabric containing the composite yarn.
Background
In recent years, the short-track speed skating sports item is continuously developed, and besides the ice skate and the physical quality of athletes play a key role in the match, the short-track speed skating suit is also important for protecting the athletes and improving the performance. The original sportswear is made of common elastic fabric, but the bodies of the sportswear sliding at high speed in the competition are easy to collide with each other, so that the sharp ice skate blades can not avoid cutting the sportswear and other people, and therefore, the sportsmen need to wear cut-preventing clothes in the competition process. Based on the fact that neck, armpit, arm, groin, front and back of knee and gluteus muscles of athletes are easy to be injured, the parts are determined to be high-risk areas in 2004, according to different race grades, the fact that high-risk areas in a type of race should use EN 388 second-grade or more anti-cutting fabrics is proposed, the high-risk areas can be integrated with other fabrics, the high-risk areas can be made into inner linings attached to inner layers of special parts, and no high-risk areas are subjected to enforcement regulations. To further ensure the personal safety of the athlete, 2021 identifies the areas of high risk as potentially life-threatening areas and areas at risk of severe cuts, which are of particular concern, while the ISU mandates that in a class of events 7 months after 2022, the athlete wear apparel that is cut-resistant all over the body, and that is cut-resistant three levels as EN 388.
The short-path fast-sliding racing uniform is limited by the development of the fabric technology, is mostly in a double-layer combination form of elastic fabric and anti-cutting fabric in practical application, is mostly a pure knitted fabric of ultra-high molecular weight polyethylene filaments or aramid fibers, is attached to the inner side of a high risk area in an inner lining form, is large in surface density and poor in elasticity, is not matched with the outer elastic fabric, and therefore has the problems of large thickness, easiness in folding, poor elasticity and the like in a double-layer area of the racing uniform. The sportswear is not considered enough in terms of the wearability, and although the sportsman can be prevented from being scratched in the competition, the action development and the high-level exertion of the sportsman are influenced.
Different from the common anti-cutting fabric, the ideal fabric suitable for the short-track speed skating suit needs to comprehensively consider the wearability and the protective performance, namely, the fabric is light, thin, high-elastic and tough and can be directly used as a single-layer fabric. From the viewpoint, the development of high-elastic, tough and cut-resistant yarns for weaving the fabric is required, so that the high-elastic and cut-resistant performance of the fabric is realized. Therefore, the research and development of the high-elastic, tough and cutting-resistant composite yarn and the preparation of the light, high-elastic and cutting-resistant fabric by using the high-elastic, tough and cutting-resistant composite yarn have important value and significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-elasticity and cutting-resistant composite yarn, a preparation method thereof and a cutting-resistant fabric containing the composite yarn, so as to solve the problems of unidirectional cutting resistance and poor elasticity of a short-path quick-sliding cutting-resistant fabric in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a high-elasticity and cutting-resistant composite yarn which is of a sheath-core structure and comprises sheath yarns and core yarns;
the sheath yarn is an ultra-high molecular weight polyethylene filament, and the core yarn is a spandex filament;
the mass ratio of the ultra-high molecular weight polyethylene filaments to the spandex filaments is 68-85: 15 to 32.
Preferably, the fineness of the ultra-high molecular weight polyethylene filament is 50-200D, and the fineness of the spandex filament is 20-140D.
The invention also provides a preparation method of the high-elasticity and cutting-resistant composite yarn, which comprises the following steps:
pre-drafting the spandex filament, and carrying out spiral twisting on the ultra-high molecular weight polyethylene filament by taking the spandex filament as an axis to obtain a high-elasticity and cutting-resistant composite yarn;
the pre-drafting of the spandex filament and the spiral twisting of the ultra-high molecular weight polyethylene filament are carried out simultaneously.
Preferably, the draft ratio is 1.8 to 4.5.
Preferably, in the process of spiral twisting, the twist is 600-900 t/m, and the ingot speed is 750-14000 t/min.
The invention also provides a cutting-proof fabric containing the high-elasticity and cutting-resistant composite yarn, wherein the cutting-proof fabric contains a face yarn, a middle yarn and a bottom yarn;
the veil is a covering yarn containing nylon and spandex filament, the nylon is a sheath yarn, the spandex filament is a core yarn, and the mass ratio of the nylon to the spandex filament is 30-40: 60-70 parts of;
the middle yarn and the bottom yarn are both high-elasticity and cutting-resistant composite yarns;
the mass ratio of the face yarns to the middle yarns to the bottom yarns is 25-33: 40-50: 23 to 30.
Preferably, the fineness of the nylon and the fineness of the spandex filament in the face yarn are 40D and 70D respectively.
Preferably, the thickness of the anti-cutting fabric is 1.05-1.20 mm, and the gram weight of the anti-cutting fabric is 360-420 g/m2。
Preferably, the anti-cutting fabric is prepared from three-line chlamydomonas tetragonia scale tissues.
The beneficial effects of the invention include the following:
1) the ultra-high molecular weight polyethylene filament is a high-performance fiber, has the advantages of high tensile breaking strength and cutting resistance, and endows the composite yarn with good cutting resistance; the spandex filament has excellent shrinkage and stretching elasticity, and endows the composite yarn with excellent mechanical property and high elasticity.
2) The composite yarn has good cutting resistance, high elasticity and mechanical property; the prepared anti-cutting fabric has the advantages of light weight, flexibility, good air permeability and moisture permeability, good anti-cutting performance and capability of being printed and dyed on the surface.
Drawings
FIG. 1 is a pictorial representation of a high stretch, cut-resistant composite yarn of the present invention;
FIG. 2 is a schematic representation of a high stretch, cut resistant composite yarn of the present invention;
FIG. 3 is a diagram of a fixture and holder designed to test the cutting performance of the high stretch, cut resistant composite yarn of the present invention.
Detailed Description
The invention provides a high-elasticity and cutting-resistant composite yarn which is of a sheath-core structure and comprises sheath yarns and core yarns;
the sheath yarn is an ultra-high molecular weight polyethylene filament, and the core yarn is a spandex filament;
the mass ratio of the ultra-high molecular weight polyethylene filaments to the spandex filaments is 68-85: 15 to 32.
The mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is preferably 70-82: 18 to 30, and more preferably 72 to 80: 20-28, more preferably 75-78: 22 to 25.
The fineness of the ultra-high molecular weight polyethylene filament is preferably 50-200D, more preferably 75-150D, and even more preferably 100-120D; the fineness of the spandex filament is preferably 20-140D, more preferably 50-120D, and even more preferably 70-105D.
The composite yarn is a composite yarn formed by combining the core yarn and the sheath yarn, and the sheath yarn and the core yarn are combined, so that respective advantages can be exerted, the defects of the two parties are overcome, and the structure and the characteristics of the resultant yarn are optimized. The ultra-high molecular weight polyethylene filament is a high-performance fiber, has the advantages of high tensile breaking strength and cutting resistance, and endows the composite yarn with good cutting resistance; the spandex filament has excellent shrinkage and stretching elasticity, and endows the composite yarn with excellent mechanical property and high elasticity. The composite yarn of the invention has good cutting resistance, high elasticity and mechanical property.
The actual figure of the high-elasticity and cutting-resistant composite yarn is shown in figure 1, and the schematic figure of the high-elasticity and cutting-resistant composite yarn is shown in figure 2.
The invention also provides a preparation method of the high-elasticity and cutting-resistant composite yarn, which comprises the following steps:
pre-drafting the spandex filament, and carrying out spiral twisting on the ultra-high molecular weight polyethylene filament by taking the spandex filament as an axis to obtain a high-elasticity and cutting-resistant composite yarn;
the pre-drafting of the spandex filament and the spiral twisting of the ultra-high molecular weight polyethylene filament are carried out simultaneously.
The draft ratio is preferably 1.8 to 4.5, more preferably 2.6 to 4.2, and still more preferably 3 to 3.7.
The draft multiple of the invention is related to the crimp rate, and the larger the crimp rate is, the larger the adjustable range of the draft multiple is.
In the process of spiral twisting, the twist is preferably 600-900 t/m, more preferably 650-800 t/m, and even more preferably 700-750 t/m; the ingot speed is preferably 750 to 14000t/min, more preferably 10000 to 13000t/min, and even more preferably 11000 to 12000 t/min.
The most effective means for solving the problem of core yarn exposure is to twist the sheath yarn, and proper twist is selected to generate a certain centripetal force to enable the sheath yarn to gradually approach the center and wrap the core yarn. The twist is not suitable to be too large, and the mechanical property of the yarn is sharply reduced due to the large twist, so that the hand feeling is seriously influenced.
The spindle rotates at a high speed to enable the winding bobbin to rotate at a high speed, and the functions of twisting, winding, forming and the like in the spinning process are completed, so that the raw material yarn is wound on the bobbin according to a certain rule to form the cop.
The ratio of the spindle speed to the twist is the curling rate, and the twist, the spindle speed and the curling rate can reduce the yarn breakage phenomenon and realize the stable running of the yarn.
The invention adopts the structure of the composite yarn to combine the ultra-high molecular weight polyethylene filament and the spandex filament, the spandex filament is stressed and drafted in the spinning process, and simultaneously the ultra-high molecular weight polyethylene filament is twisted to be spirally coated around the drafted and elongated spandex filament to form the composite yarn, namely the ultra-high molecular weight polyethylene/spandex elastic composite yarn. The structure of the composite yarn enables the performance of the composite yarn to be the superposition of mechanical properties of the core yarn and the sheath yarn to a certain degree, the finished yarn has good tensile recovery performance due to the fact that the spandex filament has extremely strong resilience tendency and drives the sheath yarn to move, and meanwhile, the ultra-high molecular weight polyethylene filament plays a role in protection and can bear stronger external force.
The invention also provides a cutting-proof fabric containing the high-elasticity and cutting-resistant composite yarn, wherein the cutting-proof fabric contains a face yarn, a middle yarn and a bottom yarn;
the veil is a covering yarn containing nylon and spandex filament, the nylon is a sheath yarn, the spandex filament is a core yarn, and the mass ratio of the nylon to the spandex filament is 30-40: 60-70 parts of;
the middle yarn and the bottom yarn are both high-elasticity and cutting-resistant composite yarns;
the mass ratio of the face yarns to the middle yarns to the bottom yarns is 25-33: 40-50: 23 to 30.
In the veil, the mass ratio of the nylon to the spandex filaments is preferably 32-38: 62 to 68, and more preferably 34 to 36.5: 63.5 to 66, more preferably 35 to 36: 64-65; the mass ratio of the face yarns, the middle yarns and the bottom yarns is preferably 27-31: 42-48: 25-28, more preferably 28-30: 44-46: 26 to 27.
In the veil of the invention, the fineness of the nylon is preferably 40D, and the fineness of the spandex filament is preferably 70D.
The thickness of the anti-cutting fabric is preferably 1.05-1.20 mm, more preferably 1.08-1.15 mm, and even more preferably 1.1-1.12 mm; the gram weight of the anti-cutting fabric is preferably 360-420 g/m2More preferably 370 to 410g/m2More preferably 390 to 400g/m2。
The anti-cutting fabric is preferably prepared from three-line chlamydomonas fuscata scale tissues.
The invention selects 70D and 105D spandex filament and 40D nylon besides the ultra-high molecular weight polyethylene filament, thereby reducing the dead weight of the fabric, lightening the wearing burden during work and finishing the weaving of the anti-cutting fabric of the short-track speed-skating suit.
Warp and weft in the woven structure are mutually independent, a plurality of yarns bear external force in the direction perpendicular to the movement direction of the blade during cutting, and few yarns in the parallel direction are in contact with the blade and almost have no capacity of bearing the external force. The cutting-resistant fabric is obtained by weaving three-line sweater fish scale tissues by taking high-elasticity and cutting-resistant composite yarns and nylon/spandex filament core-spun yarns as raw materials, the fabric is covered by the high-performance elastic composite yarns in all directions, the risk of being cut can be avoided to the maximum extent, meanwhile, a knitted structure consists of continuous coils, corresponding coils are arranged in any direction when external force is applied to counteract the external force, the fabric is endowed with better elasticity, and the cutting-resistant fabric is more suitable for being applied to short-path quick-sliding sportswear to adapt to frequent stretching and contraction of athletes; the anti-cutting fabric has the characteristics of light weight, flexibility and air permeability.
The three-line sweater fish scale tissue is one of knitted structures, when in weaving, the veil is attached to the upper layer, so that dyeing or printing is facilitated, and a certain color and pattern are given to the fabric.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Taking 100D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 78.35: 21.65, drafting the spandex filament, wherein the drafting multiple is 3.80, the ultra-high molecular weight polyethylene filament rotates and twists with the spandex filament as an axis while the spandex filament is drafted, the twist is 600t/m, the spindle speed is 12000t/min, and the curling speed is 20m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The cut resistance of the high elastic, cut resistant composite yarn of example 1 was tested using an AUTOGRAPH universal tester, which designed a clamp and a bracket, attached to the upper and lower ends of the clamp, respectively. The clamp is used to hold the blade, the holder is used to hold the composite yarn, and the clamp and holder are shown in figure 3. And (3) fixing the two ends of the composite yarn which is straightened but not elongated at the fixing point of the lower bracket, enabling the composite yarn to penetrate through the gap between the blade and the clamp, and lifting the blade and the yarn by upward force to generate a cutting effect until the composite yarn is broken. To ensure the accuracy of the data, the position is moved or the blade is replaced at each cut. Finally, the cutting resistance of the yarn is characterized by the cutting force when the yarn is broken.
The elastic recovery of the high elastic, cut resistant composite yarn of example 1 was tested: the elastic test of the composite yarn was carried out by means of an Instron 5966 with a specimen having an effective length of 200mm (L)0) One end of the prepared sample is clamped into an upper clamp, and the other end of the sample is subjected to pretension by referring to FZ/T50007-2012 'spandex filament elasticity test method' and clamped into a lower clamp. The tensile rate is 200mm/min, the sample is elongated from 0% to 100% of the original length, and the length is L1Recovery to 0%, elongation, 5 times of stretch recovery, 30s of dwell at 6 th stretch to 100%, recovery to pre-tension, recorded as L2。
Elastic recovery rate ═ L1-L2)/(L1-L0) Plastic deformation rate (L)2-L0)/L0。
The high stretch, cut resistant composite yarn of example 1 had a cut resistance of 3.21N and an elastic recovery of 91.20%.
The high elastic, cut resistant composite yarns of examples 2-12 were tested for cut resistance and elastic recovery using the same method as in example 1.
Example 2
Taking 100D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 78.35: 21.65, drafting the spandex filament, wherein the drafting multiple is 3.80, the ultra-high molecular weight polyethylene filament rotates and twists with the spandex filament as an axis while the spandex filament is drafted, the twist is 650t/m, the spindle speed is 13000t/min, and the curling rate is 20m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 2 had a cut resistance of 2.65N and an elastic recovery of 90.15%.
Example 3
Taking 100D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 78.18: 21.82, drawing the spandex filament, wherein the drawing multiple is 3.77, the spandex filament is drawn, and simultaneously the ultra-high molecular weight polyethylene filament rotates and twists by taking the spandex filament as an axis, the twist is 700t/m, the spindle speed is 13000t/min, and the curling speed is 18.57m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 3 had a cut resistance of 2.45N and an elastic recovery of 86.77%.
Example 4
Taking 75D of ultra-high molecular weight polyethylene filament as a sheath yarn and 70D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 76.27: 23.73, drafting the spandex filament, wherein the drafting multiple is 3.0, the ultra-high molecular weight polyethylene filament rotates and twists with the spandex filament as an axis while the spandex filament is drafted, the twist is 600t/m, the spindle speed is 11400t/min, and the curling rate is 19m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 4 had a cut resistance of 2.71N and an elastic recovery of 89.77%.
Example 5
Taking 100D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 70D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 83.76: 16.24, drafting the spandex filament, wherein the drafting multiple is 3.61, the ultra-high molecular weight polyethylene filament rotates and twists with the spandex filament as an axis while the spandex filament is drafted, the twist is 600t/m, the spindle speed is 11400t/min, and the curling rate is 19m/min, so that the high-elasticity and cut-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 5 had a cut resistance of 3.19N and an elastic recovery of 89.09%.
Example 6
Taking 75D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 70.21: 29.79, drafting the spandex filament, wherein the drafting multiple is 3.30, the ultra-high molecular weight polyethylene filament rotates and twists with the spandex filament as the axis while the spandex filament is drafted, the twist is 600t/m, the spindle speed is 10800t/min, and the curling speed is 18m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 6 had a cut resistance of 2.69N and an elastic recovery of 90.24%.
Example 7
Taking 100D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 75.86: 24.14, drafting the spandex filament, wherein the drafting multiple is 3.30, the ultra-high molecular weight polyethylene filament rotates and twists with the spandex filament as an axis while the spandex filament is drafted, the twist is 600t/m, the spindle speed is 10800t/min, and the curling speed is 18m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 7 had a cut resistance of 3.19N and an elastic recovery of 87.78%.
Example 8
Taking 100D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 80.52: 19.48, drafting the spandex filament, wherein the drafting multiple is 4.34, the spandex filament is drafted, and simultaneously the ultrahigh molecular weight polyethylene filament rotates and twists by taking the spandex filament as an axis, the twist is 600t/m, the spindle speed is 12996t/min, and the curling speed is 21.66m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 8 had a cut resistance of 3.18N and an elastic recovery of 90.90%.
Example 9
Taking 75D of ultra-high molecular weight polyethylene filament as a sheath yarn and 70D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 79.46: 20.54, drafting the spandex filament, wherein the drafting multiple is 3.61, the spandex filament is drafted, and simultaneously the ultrahigh molecular weight polyethylene filament rotates and twists by taking the spandex filament as an axis, the twist is 630t/m, the spindle speed is 11970t/min, and the curling speed is 19m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 9 had a cut resistance of 2.72N and an elastic recovery of 93.46%.
Example 10
Taking 75D of ultra-high molecular weight polyethylene filament as a sheath yarn, 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 75.61: 24.39, drawing the spandex filament, wherein the drawing multiple is 4.34, the spandex filament is drawn, and simultaneously the ultra-high molecular weight polyethylene filament rotates and twists by taking the spandex filament as an axis, the twist is 670t/m, the spindle speed is 13000t/min, and the curling speed is 19.4m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 10 had a cut resistance of 2.78N and an elastic recovery of 94.37%.
Example 11
Taking 100D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 105D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 78.35: 21.65, drafting the spandex filament, wherein the drafting multiple is 3.80, the ultra-high molecular weight polyethylene filament rotates and twists with the spandex filament as an axis while the spandex filament is drafted, the twist is 600t/m, the spindle speed is 12000t/min, and the curling speed is 20m/min, so that the high-elasticity and cutting-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 11 had a cut resistance of 2.69N and an elastic recovery of 93.82%.
Example 12
Taking 75D of ultra-high molecular weight polyethylene filament as a sheath yarn, taking 70D of spandex filament as a core yarn, wherein the mass ratio of the ultra-high molecular weight polyethylene filament to the spandex filament is 73.08: 26.92, drawing the spandex filament, wherein the drawing multiple is 4.34, the spandex filament is drawn, and simultaneously the ultrahigh molecular weight polyethylene filament rotates and twists by taking the spandex filament as an axis, the twist is 600t/m, the spindle speed is 12996t/min, and the curling speed is 21.66m/min, so that the high-elasticity and cut-resistant composite yarn is obtained.
The high stretch, cut resistant composite yarn of example 12 had a cut resistance of 2.67N and an elastic recovery of 91.11%.
From examples 1 to 12, it is clear that the composite yarn of the present invention has excellent cut resistance and elastic recovery.
Example 13
The covering yarn prepared from 40D nylon and 70D spandex filament is used as a face yarn, and the mass ratio of the nylon to the spandex filament is 32: 68. the high-elasticity and cut-resistant composite yarn of example 6 was used for both the middle yarn and the ground yarn, and the mass ratio of the face yarn, the middle yarn and the ground yarn was 31.69: 42.42: 25.89, preparing the anti-cutting fabric by using scale tissues of the three-line chlamydomonas.
The cut-resistant fabric of example 13 had a thickness of 1.05mm and a grammage of 382.27g/m2。
Example 14
The covering yarn prepared from 40D nylon and 70D spandex filament is used as a face yarn, and the mass ratio of the nylon to the spandex filament is 36.16: 63.84. the high-elasticity and cut-resistant composite yarn of example 5 was used for both the middle yarn and the ground yarn, and the mass ratio of the face yarn, the middle yarn and the ground yarn was 30.09: 42.00: 27.91, preparing the anti-cutting fabric by using scale tissues of the three-line chlamydomonas.
The cut-resistant fabric of example 14 had a thickness of 1.11mm and a grammage of 402.68g/m2。
Example 15
The covering yarn prepared from 40D nylon and 70D spandex filament is used as a face yarn, and the mass ratio of the nylon to the spandex filament is 37.5: 62.5. the high-elasticity and cut-resistant composite yarn of example 12 was used for both the middle and ground yarns, and the mass ratio of the face, middle and ground yarns was 27.83: 47.12: 25.05, preparing the anti-cutting fabric by using scale tissues of the three-line chlamydomonas.
The cut-resistant fabric of example 15 had a thickness of 1.13mm and a grammage of 382.39g/m2。
Example 16
The covering yarn prepared by adopting 40D nylon and 70D spandex filament is used as a face yarn, and the mass ratio of the nylon to the spandex filament is 35.5: 64.5. the high-elasticity and cut-resistant composite yarn of example 1 was used for both the middle yarn and the ground yarn, and the mass ratio of the face yarn, the middle yarn and the ground yarn was 28.5: 45: 26.5, preparing the anti-cutting fabric by using the scale tissues of the three-line chlamydomonas.
The cut-resistant fabric of example 16 had a thickness of 1.12mm and a grammage of 378.09g/m2。
Example 17
The covering yarn prepared by adopting 40D nylon and 70D spandex filament is used as a face yarn, and the mass ratio of the nylon to the spandex filament is 30.95: 69.05. the middle yarn adopts the high-elasticity and cutting-resistant composite yarn of the embodiment 5, the bottom yarn adopts the high-elasticity and cutting-resistant composite yarn of the embodiment 6, and the mass ratio of the surface yarn to the middle yarn to the bottom yarn is 27.82: 47.53: and 24.65, preparing the anti-cutting fabric by using the scale tissues of the three-line chlamydomonas.
The cut-resistant fabric of example 17 had a thickness of 1.02mm and a grammage of 373.00g/m2。
Comparative example 1
The cutting-proof fabric is prepared by adopting a weaving structure and taking core-spun yarns prepared from 50D terylene and 20D spandex filaments as warps, and composite yarns prepared from 100D ultrahigh molecular weight polyethylene filaments and 40D spandex filaments as wefts.
Comparative example 2
The surface weft of the core-spun yarn is prepared by adopting 100D ultra-high molecular weight polyethylene filament and 40D spandex filament as warp, 100D ultra-high molecular weight polyethylene filament and 40D spandex filament as inner weft, and 50D nylon and 20D spandex filament. And preparing the anti-cutting fabric by adopting a weft duplex structure.
The cut-resistant fabric of comparative example 2 had a thickness of 0.74mm and a grammage of 268.00g/m2。
The cut-resistant fabrics of examples 13-17 and comparative examples 1 and 2 were tested for elastic recovery: will be 100mm (L)0) The long test specimen was clamped flat at both ends on an Instron 5966 tester, the instrument was started and 1N pre-load was appliedApplying tension, and stretching to a predetermined elongation of 30% (length L)1) Stopping for 1min, returning to the starting point, stopping for 3min, stretching and recovering for 3 times, recovering to the pre-tension position, and recording the length L at the moment2The elastic recovery rate was calculated.
Elastic recovery rate ═ L1-L2)/(L1-L0) Plastic deformation rate (L)2-L0)/L0。
The anti-cutting performance of the anti-cutting fabrics of examples 13-17 and comparative examples 1 and 2 was tested, and the test method was: the 2 samples were tested under 5 newton magnitude of uninterrupted force and the rating was determined based on the number of turns sustained before the cut.
The test conditions are as follows: 23 +/-2 ℃ and relative humidity of 50 +/-5 percent;
the test steps are as follows: drawing a rectangle of 100mm multiplied by 60mm on the fabric to prepare a sample of 100mm multiplied by 60 mm; preparing a conductive rubber pad, aluminum foil paper and filter paper with the size of 100mm multiplied by 60mm, and sequentially arranging the conductive rubber pad, the aluminum foil paper, the filter paper and the test fabric from bottom to top; covering an upper cover of the sample clamp, and screwing a screw to obtain a test sample; and opening a power switch at the back of the cutting tester, clicking a reset key below a screen for zero clearing, clicking a start key to start testing, starting cutting by the blade, stopping cutting after the blade contacts the aluminum foil paper, displaying the number of cutting circles, and cutting the standard cloth by the same method to judge the cutting index according to the corresponding formula and grade.
The cut resistant facing of example 13 had an elastic recovery of 83.19% in the machine direction and 85.63% in the cross direction. The machine direction cut index was 3.3, grade 2, the cross direction cut index was 3.7, grade 2.
The cut resistant fabric of example 14 had an elastic recovery of 84.61% in the machine direction and 89.34% in the cross direction. The machine direction cut index was 4.1, grade 2, the cross direction cut index was 3.7, grade 2.
The cut resistant fabric of example 15 had an elastic recovery of 84.75% in the machine direction and 87.55% in the cross direction. The machine direction cut index was 3.7, grade 2, the cross direction cut index was 3.3, grade 2.
The cut resistant fabric of example 16 had an elastic recovery of 84.92% in the machine direction and 88.75% in the cross direction. The machine direction cut index was 4.3, grade 2, the cross direction cut index was 3.9, grade 2.
The cut resistant fabric of example 17 had an elastic recovery of 82.52% in the machine direction and 85.57% in the cross direction. The machine direction cut index was 3.6, grade 2, the cross direction cut index was 3.7, grade 2.
The cut resistant face fabric of comparative example 1 had an elastic recovery of 88.09% in the warp direction and 81.73% in the weft direction. The warp cut index was 3.0, grade 2, the weft cut index was 1.8, grade 1.
The cut-resistant fabric of comparative example 2 had a warp cut index of 2.1, a rating of 1, a weft cut index of 2.1, a rating of 1, and an elastic stretch of 50% in both the warp and weft directions.
From the examples 13-17 and the comparative example 1, the problem of one-way anti-cutting of the short-path fast-sliding fabric is obviously solved on the premise of ensuring elasticity, and the anti-cutting performance is greatly improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The high-elasticity and cutting-resistant composite yarn is characterized by being of a sheath-core structure and comprising sheath yarns and core yarns;
the sheath yarn is an ultra-high molecular weight polyethylene filament, and the core yarn is a spandex filament;
the mass ratio of the ultra-high molecular weight polyethylene filaments to the spandex filaments is 68-85: 15 to 32.
2. The high-elasticity and cutting-resistant composite yarn according to claim 1, wherein the fineness of the ultra-high molecular weight polyethylene filament is 50-200D, and the fineness of the spandex filament is 20-140D.
3. The method of making a high stretch, cut-resistant composite yarn of claim 1 or 2, comprising the steps of:
pre-drafting the spandex filament, and carrying out spiral twisting on the ultra-high molecular weight polyethylene filament by taking the spandex filament as an axis to obtain a high-elasticity and cutting-resistant composite yarn;
the pre-drafting of the spandex filament and the spiral twisting of the ultra-high molecular weight polyethylene filament are carried out simultaneously.
4. The method according to claim 3, wherein the draft is 1.8 to 4.5.
5. The method according to claim 3 or 4, wherein the twist number is 600 to 900t/m and the ingot speed is 750 to 14000t/min during the spiral twisting.
6. A cut resistant fabric comprising the high stretch, cut resistant composite yarn of claim 1 or 2, wherein the cut resistant fabric comprises a face yarn, a middle yarn, and a ground yarn;
the veil is a covering yarn containing nylon and spandex filament, the nylon is a sheath yarn, the spandex filament is a core yarn, and the mass ratio of the nylon to the spandex filament is 30-40: 60-70 parts of;
the middle yarn and the bottom yarn are both high-elasticity and cutting-resistant composite yarns;
the mass ratio of the face yarns to the middle yarns to the bottom yarns is 25-33: 40-50: 23 to 30.
7. The cutting-resistant fabric according to claim 6, wherein the fineness of nylon and the fineness of spandex filament in the face yarn are 40D and 70D, respectively.
8. The cutting-resistant fabric as claimed in claim 6 or 7, wherein the cutting-resistant fabric has a thickness of 1.05-1.20 mm and a gram weight of 360-420g/m2。
9. The cut-resistant fabric of claim 8, wherein the cut-resistant fabric is prepared from three-thread velveteen scales.
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