CN1730739A - Preparation method of ultraviolet resistant, quick moisture absorption dry polyester fiber - Google Patents
Preparation method of ultraviolet resistant, quick moisture absorption dry polyester fiber Download PDFInfo
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- CN1730739A CN1730739A CN 200510044264 CN200510044264A CN1730739A CN 1730739 A CN1730739 A CN 1730739A CN 200510044264 CN200510044264 CN 200510044264 CN 200510044264 A CN200510044264 A CN 200510044264A CN 1730739 A CN1730739 A CN 1730739A
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- 239000000835 fiber Substances 0.000 title claims abstract description 104
- 229920000728 polyester Polymers 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000010521 absorption reaction Methods 0.000 title claims description 17
- 238000009987 spinning Methods 0.000 claims abstract description 50
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 55
- 239000003513 alkali Substances 0.000 claims description 30
- 238000005904 alkaline hydrolysis reaction Methods 0.000 claims description 25
- 230000009467 reduction Effects 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 11
- 238000002425 crystallisation Methods 0.000 claims description 10
- 230000008025 crystallization Effects 0.000 claims description 10
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- 238000010348 incorporation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
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- 239000000126 substance Substances 0.000 abstract description 3
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- 238000000034 method Methods 0.000 description 14
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000007664 blowing Methods 0.000 description 8
- 238000002036 drum drying Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000007380 fibre production Methods 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
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- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- UOURRHZRLGCVDA-UHFFFAOYSA-D pentazinc;dicarbonate;hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[O-]C([O-])=O.[O-]C([O-])=O UOURRHZRLGCVDA-UHFFFAOYSA-D 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000003578 releasing effect Effects 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
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- QYSXJUFSXHHAJI-XFEUOLMDSA-N Vitamin D3 Natural products C1(/[C@@H]2CC[C@@H]([C@]2(CCC1)C)[C@H](C)CCCC(C)C)=C/C=C1\C[C@@H](O)CCC1=C QYSXJUFSXHHAJI-XFEUOLMDSA-N 0.000 description 1
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- 239000011787 zinc oxide Substances 0.000 description 1
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- Artificial Filaments (AREA)
Abstract
The present invention relates to the preparation process of uvioresistnat hydroscopic fast drying polyester fiber, and belongs to the field of chemical fiber technology. The uvioresistnat hydroscopic fast drying polyester fiber is prepared with polyester chip easy to alkaline hydrolyze (COPET) as pore creating agent and uvioresistant polyester chip and through mixing and spinning. COPET adding amount is 2-30 wt%, and the mixture after being molten is spun with spinning plate with orifices in double-C, three-C or triphyllous shape before post-treatment.
Description
(1) technical field
The present invention relates to a kind of preparation method of multifunctional modification polyester fiber, particularly a kind of preparation method with polyester fiber of uvioresistant, hydroscopic fast-drying complex function belongs to chemical fiber field.
(2) background technology
Polyester fiber for remedy natural fabric underproduce and the exploitation and develop rapidly.Along with the raising of people's living standard and the increase of polyester output, when the demand to its quantity is met, healthy, the comfortable basic demand that more and more becomes people to textiles, following textiles will develop to comfortable, healthy direction, to represent comfortableness, functional characteristic.
Polyester fiber is as one of the big main force of three in synthetic fiber fiber, because of its good physics and chemical characteristic are widely used in garment material and other non-garment industry.Polyester product also once had been used as main textile raw material by downstream user and had been weaved all kinds of textiless so that its drapability is good, intensity is high since coming out.But because its hydrophobic property and being restricted in the Application for Field that hygroscopicity or water imbibition are had relatively high expectations.Though and natural fabric has hygroscopicity preferably as textile, higher because of its water retention rate, wet transmitting performance is relatively poor, and range of application also has been subjected to restriction.How making a kind of fiber have moisture absorption simultaneously---wet high-comfort that loose can be the target that present many fiber research persons and polyster fibre manufacturer are all laying siege to.
Exist not thick ozone layer at atmosphere top 25-30 km, it can absorb the excessive ultraviolet from the sun, with the creature on preserving our planet.Because the chlorofluorination hydrocarbon compound of freon and so on is discharged in mankind's activity in large quantities, and stratospheric ozone is destroyed, the amount of ultraviolet irradiation that arrives ground is increased.An amount of ultraviolet ray irradiation can promote the synthetic of vitamin D, but overexposure can be damaged corium and hypodermis, makes skin darkening, causes skin aging, causes light aging, photaesthesia reaction and immunosupress, and part also participates in the sunburn reaction.Nano zine oxide utilizes this characteristic because the defective that exists on small grain size effect and the lattice has it and absorbs the special nature that electron transition takes place in ultraviolet ray, can make the uvioresistant polyester section by adding in the polyester process and applying.
Domestic preparation has the method for complex function polyester fiber, mainly contains functional agglomerate additive process, fabric post-treatment method etc., and the former shortcoming is that the uniformity of functional additive is relatively poor, and influences its spinnability; The latter's shortcoming is that washing resistance is poor.Both above shortcomings have greatly limited its application.
(3) summary of the invention
The present invention is directed to the deficiency of prior art products, the preparation method of a kind of uvioresistant, quick moisture absorption dry polyester fiber is provided, can be on the equipment of normal polyester fiber direct production complex function polyester fiber, process equipment does not have specific (special) requirements, prepared polyester fiber function admirable, product have uvioresistant, hydroscopic fast-drying dual-use function simultaneously.
Easy alkaline hydrolysis polyester of two kinds of raw materials (COPET) that the present invention adopts and uvioresistant polyester section all are known, specifically referring to Chinese patent 03112011.3 and 03138993.7.
(1) easily alkaline hydrolysis polyester (COPET) is the PET copolymer that has added the 3rd component.At first in the polyester molecule chain, introduce sulfonate groups,, have sucting electronic effect, changed the regularity of polyester molecule chain simultaneously, help the infiltration of water and the carrying out of alkaline hydrolysis process because sulfonate groups is the polarity hydrophilic radical.But, influence spinnability because the formed sterically hindered and polar effect of sulfonate groups causes melt viscosity sharply to rise.Therefore under the prerequisite that keeps the polymer alkaline hydrolysis, introduce soft segment, improve the rigidity of polymer molecule greatly, improve the spinnability of polymer, further improve the alkaline hydrolysis of polymer simultaneously.Referring to Chinese patent 03112011.3.
(2) the uvioresistant polyester section is to utilize the nanometer basic zinc carbonate of barium sulfate coating that polyester is added modification to make, basic zinc carbonate can decompose generation zinc oxide under conditions of polymerization temperature vary, make the ultraviolet ray of dacron fabric energy efficient absorption, thereby reach the purpose of health care.Referring to Chinese patent 03138993.7.
The present invention selects for use easy alkaline hydrolysis polyester (COPET) section and uvioresistant polyester section for raw material, makes the polyester fiber with complex function by co-blended spinning, and this easy alkaline hydrolysis polyester (COPET) section is as pore former.This fiber is after alkali treatment, and the easy alkaline hydrolysis polyester on its surface is dissolved, thereby makes fiber surface have countless fine holes, by capillary effect the sweat of skin surface and moisture moment is excreted, and makes skin keep dry and comfortable and refrigerant.Because uvioresistant polyester is retained, and makes fiber have uvioresistant function simultaneously concurrently.Prepared product can satisfy people to requirement comfortable, healthy textiles.
Preparation method of the present invention may further comprise the steps:
1, blend
With percentage by weight is that the easy alkaline hydrolysis polyester of 2-30% and the uvioresistant polyester of 98-70% are distinguished predrying; Then mix in vacuum drum, time dimension is held in 1～2 hour;
The content of easy alkaline hydrolysis polyester is good with 8-15% in the above-mentioned blended material.
2, spinning
Install static mixer additional at the spinning manifold charging aperture, with the uniformity of abundant assurance melt mixed, design spinnerets according to the degree of profile of fiber for 5-30%, spinnerets can select for use micropore to be shaped as two C, three C or three leaves; The raw material that step 1 is mixed carries out pre-crystallization, drying, and the filament spinning component through described spinnerets is housed carries out spinning, makes the polyester fiber with uvioresistant, moisture absorption sweat discharging functions of the present invention.
The degree of profile of above-mentioned spinnerets is good with 10-20%.
3, the control of reduction rate
The fabric that step 2 gained fiber is made into carries out the alkali decrement treatment, and reduction rate is controlled at 3-25%, is good with 5-15%.
Above-mentioned alkali decrement treatment technology gets final product by conventional alkali decrement process in the prior art, and for example, fabric is in NaOH solution, under 100 ℃ of conditions, decrement 30～60 minutes, the reduction rate of fabric is 3～25%, wherein, the concentration of NaOH solution is 3～5% of relative fabric weight.Fabric after the alkali decrement treatment is extracted fiber out, does electromicroscopic photograph, observes the situation of fiber surface micropore or pit.The micropore of fiber surface or pit are many more, and the moisture absorbing and sweat releasing effect of its fabric is good more.
One of important step of the present invention is that the uniformity of blended material is handled.For co-blended spinning, it is a very important ring that the uniformity of blended material is handled.Only guarantee the uniformity of raw material, could guarantee the stability of spinning and the homogeneity of product.The present invention will distinguish predrying good easy alkaline hydrolysis polyester and uvioresistant polyester and mix in vacuum drum, and the time was not less than 1 hour; Simultaneously install static mixer additional, to guarantee the uniformity of melt mixed at the spinning manifold charging aperture.
Select for use easy alkaline hydrolysis polyester (COPET) and uvioresistant polyester blend to make to have hydroscopic fast-drying, the new type polyester fiber of uvioresistant dual-use function.Because the interpolation of modifier causes the compatibility of these two kinds of modified poly esters and spinnability all to descend to some extent, selecting rational process route for use is the key that solves this difficult problem.Owing to contain hydrophilic polar group or modifier in the modified poly ester, destroyed the regularity of polyester macromolecule chain, make the fusing point of two kinds of modified poly esters be starkly lower than normal polyester.Here earlier two kinds of functional polyesters being cut into slices, it is predrying to carry out in the vacuum drum drier respectively, blend spinning again.Adopt this process route, can before spinning, remove modified poly ester slice surface water earlier, prevent the adhesion of cutting into slices in the production process, effectively improve spinnability, the uniformity of hybrid slicing.
The proportioning of choose reasonable blended material of the present invention selects for use a kind of novel easy alkaline hydrolysis polyester (COPET) section as pore former.This COPET is the copolymer of three monomers and PET, structurally with PET great similitude is arranged.Therefore guaranteed that COPET and PET have good compatibility.Since it introduces polarity in the polyester macromolecule chain hydrophilic-sulfonate groups, and have polyethers embedding wherein, improved the alkaline hydrolysis of polymer greatly.In order to guarantee the requirement of fiber, must guarantee that at first COPET is a decentralized photo in fiber, and disperse particle diameter to have certain size pore former.And that the proportioning of blended material plays a part is very crucial.In co-mixing system, the low component of content is a decentralized photo usually, and the component that content is high is a continuous phase.If the adding proportion of COPET is too small, handle moisture absorption, the hydrofuge poor performance of back fabric; If the adding proportion of COPET is excessive, COPET is continuous phase in fiber, and fibre strength is low excessively after the alkali decrement, and road, influence back uses.Make the fiber surface of fabric have more pore former, after the alkali decrement, make it have moisture absorption, hydrofuge performance, and can satisfy back road user's instructions for use, select batch mixing ratio (weight %) 2-30% of COPET for use, be preferably 8-15%.
The present invention selects the fiber of the high trilobal cross spinnerets spinning profiled-cross-section of degree of profile for use.The degree of profile height of spinnerets, the space between the fiber that makes is big, its capillary effect is obvious, numerous minute grooves that its surface forms after the fiber alkali decrement in addition, more help to moisture moisture absorption, lead wet and loose wet.
Table 1 degree of profile relatively
| Spinnerets micropore shape | Degree of profile (%) |
| Two C | 8.5 |
| Three C | 11.4 |
| Three leaves | 18.3 |
Degree of profile (B) is measured: B=(1-r/R) * 100%
R, R are the inside and outside radius of circle that connects of profiled fibre cross-section in the formula.
The inventive method has improved the compatibility and the spinnability of blended slice, and the fibre property of preparation is good, has uvioresistant, hydroscopic fast-drying dual-use function simultaneously.
(4) description of drawings
Fig. 1 is the electromicroscopic photograph of embodiment 1 alkali decrement fiber surface;
Fig. 2 is the electromicroscopic photograph of embodiment 2 alkali decrement fiber surfaces;
Fig. 3 is the electromicroscopic photograph of embodiment 3 alkali decrement fiber surfaces;
Fig. 4 is the electromicroscopic photograph of embodiment 4 alkali decrement fiber surfaces;
Fig. 5 is the electromicroscopic photograph of embodiment 5 fibre sections;
Fig. 6 is the electromicroscopic photograph of embodiment 6 fibre sections;
Fig. 7 is the electromicroscopic photograph of embodiment 7 fibers;
Fig. 8 is the electromicroscopic photograph of embodiment 8 fibers.
More than each figure show that fiber surface has countless fine holes or pit, by capillary effect the sweat of skin surface and moisture moment are excreted, make skin keep dry and comfortable and refrigerant; The profiled-cross-section of fiber makes that the space between the fiber is big, and its capillary effect is obvious, numerous minute grooves that its surface forms after the fiber alkali decrement in addition, more help to moisture moisture absorption, lead wet and loose wet.The micropore of fiber surface or pit are many more, and the moisture absorbing and sweat releasing effect of its fabric is good more.
(5) specific embodiment
Hygroscopicity of fabric can be measured with JIS L1907-1994 method among the present invention:
The water imbibition experimental technique JIS L1907-1994 of fibre sends the clarke method: the test piece lower end that will vertically hang is immersed in the water, behind the placement certain hour, measures lifting height (mm) (measure wicking height) the expression absorption speed of water.Moisture absorption in the table one highly is that the test piece lower end is immersed in the water, places the lifting height of the water of mensuration (mm) 10 minutes.
The drying property of fabric is measured with the AATCC79:2000 method among the present invention:
The AATCC79:2000 assay method of the drying property of fibre (water evaporates rate): the sample of 6cm * 6cm. was placed 20 ± 1 ℃ Celsius, the environment of humidity 65% ± 2% following 24 hours, apart from tested fabric face 1cm distance, (the fabric weight in wet base is W behind fabric face to drip 0.05ml water with the titration mouth of pipe
o), (fabric heavily is W after 12 minutes in the unsettled test of microbalance that places degree of accuracy 0.001g
t) its water evaporates rate.Get and test 5 times mean value.
Water evaporates rate=(W
o-W
t)/0.05 * 100%
The uvioresistant performance of fabric is measured with the AS/NZS4399:1996 method among the present invention.
Embodiment 1.
The uvioresistant polyester section of 5% easy alkaline hydrolysis polyester slice and 95% is predrying respectively, in the vacuum drum drying machine, mix, 1 hour time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the short fiber production equipment, carry out spinning, the spinning spinneret micropore is shaped as 3C, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 230 ℃, 240 ℃, 248 ℃, 258 ℃, 268 ℃ (elbow), spin manifold temperature is 276 ℃, and ring blowing wind speed is 1.1 meter per seconds, and winding speed is 1160 meters/minute; Drafting multiple is 3.15, and drawing temperature is 100 ℃, and draft speed is 120 meters/minute, and setting temperature is 160 ℃, and fiber dimensious is 3.33dtex * 65mm, various quality index of gained short fiber such as table 2; The gained fiber is made into fabric, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 3%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and corresponding fiber surface is done electromicroscopic photograph, sees Fig. 1.
Embodiment 2.
The uvioresistant polyester section of 10% easy alkaline hydrolysis polyester slice and 90% is predrying respectively, in the vacuum drum drying machine, mix, 1.2 hours time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the short fiber production equipment, carry out spinning, the spinning spinneret micropore is shaped as trilobal cross, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 230 ℃, 240 ℃, 248 ℃, 258 ℃, 268 ℃ (elbow), spin manifold temperature is 276 ℃, and ring blowing wind speed is 1.1 meter per seconds, and winding speed is 1100 meters/minute; Drafting multiple is 3.26, and drawing temperature is 100 ℃, and draft speed is 120 meters/minute, and setting temperature is 160 ℃, and fiber dimensious is 3.33dtex * 65mm, various quality index of gained short fiber such as table 2; The gained fiber is made into fabric, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 10%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and corresponding fiber surface is done electromicroscopic photograph, sees Fig. 2.
Embodiment 3.
The uvioresistant polyester section of 20% easy alkaline hydrolysis polyester slice and 80% is predrying respectively, in the vacuum drum drying machine, mix, 1.2 hours time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the short fiber production equipment, carry out spinning, the spinning spinneret micropore is shaped as trilobal cross, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 230 ℃, 240 ℃, 247 ℃, 256 ℃, 266 ℃ (elbow), spin manifold temperature is 275 ℃, and ring blowing wind speed is 1.1 meter per seconds, and winding speed is 1060 meters/minute; Drafting multiple is 3.35, drawing temperature is 100 ℃, and draft speed is 120 meters/minute, and setting temperature is 160 ℃, fiber dimensious is 3.33dtex * 65mm, various quality index of gained short fiber such as table 2, the performance indications such as the table 4 of fabric are made into fabric with the gained fiber, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 15%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and corresponding fiber surface is done electromicroscopic photograph, sees Fig. 3.
Embodiment 4.
The uvioresistant polyester section of 30% easy alkaline hydrolysis polyester slice and 70% is predrying respectively, in the vacuum drum drying machine, mix, 1.5 hours time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the short fiber production equipment, carry out spinning, the spinning spinneret micropore is shaped as double C-type, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 230 ℃, 240 ℃, 246 ℃, 254 ℃, 265 ℃ (elbow), spin manifold temperature is 275 ℃, and ring blowing wind speed is 1.1 meter per seconds, and winding speed is 980 meters/minute; Drafting multiple is 3.46, and drawing temperature is 100 ℃, and draft speed is 120 meters/minute, and setting temperature is 160 ℃, and fiber dimensious is 3.33dtex * 65mm, various quality index of gained short fiber such as table 2; The gained fiber is made into fabric, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 25%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and corresponding fiber surface is done electromicroscopic photograph, sees Fig. 4.
Embodiment 5.
The uvioresistant polyester section of 10% easy alkaline hydrolysis polyester slice and 90% is predrying respectively, in the vacuum drum drying machine, mix, 1.5 hours time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the short fiber production equipment, carry out spinning, the spinning spinneret micropore is shaped as 3C, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 230 ℃, 240 ℃, 248 ℃, 258 ℃, 266 ℃ (elbow), spin manifold temperature is 275 ℃, and ring blowing wind speed is 1.1 meter per seconds, and winding speed is 1100 meters/minute; Drafting multiple is 3.26, and drawing temperature is 100 ℃, and draft speed is 120 meters/minute, and setting temperature is 160 ℃, and fiber dimensious is 3.33dtex * 65mm, various quality index of gained short fiber such as table 2; The gained fiber is made into fabric, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 5%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and electromicroscopic photograph is done in corresponding fibre section, sees Fig. 5.
Embodiment 6.
The uvioresistant polyester section of 10% easy alkaline hydrolysis polyester slice and 90% is predrying respectively, in the vacuum drum drying machine, mix, 1.5 hours time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the short fiber production equipment, carry out spinning, the spinning spinneret micropore is shaped as trilobal cross, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 230 ℃, 240 ℃, 248 ℃, 258 ℃, 266 ℃ (elbow), spin manifold temperature is 275 ℃, and ring blowing wind speed is 1.1 meter per seconds, and winding speed is 1100 meters/minute; Drafting multiple is 3.26, and drawing temperature is 100 ℃, and draft speed is 120 meters/minute, and setting temperature is 160 ℃, and fiber dimensious is 3.33dtex * 65mm, various quality index of gained short fiber such as table 2; The gained fiber is made into fabric, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 10%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and electromicroscopic photograph is done in corresponding fibre section, sees Fig. 6.
The uvioresistant polyester section of 10% easy alkaline hydrolysis polyester slice and 90% is predrying respectively, in the vacuum drum drying machine, mix, 1.5 hours time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the continuous drying production equipment, carry out spinning filament, the spinning spinneret micropore is shaped as the 3C type, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 246 ℃, 254 ℃, 262 ℃, 271 ℃, spin manifold temperature is 276 ℃, and the lateral blowing wind speed is 0.45 meter per second, and winding speed is 2100 meters/minute; Drafting multiple is 1.81, and temperature of heat plate is 97 ℃, and draft speed is 700 meters/minute, and setting temperature is 188 ℃, and fiber dimensious is 125dtex/36f, various quality index of gained long filament such as table 3; The gained fiber is made into fabric, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 5%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and corresponding fiber surface is done electromicroscopic photograph, sees Fig. 7.
Embodiment 8.
The uvioresistant polyester section of 10% easy alkaline hydrolysis polyester slice and 90% is predrying respectively, in the vacuum drum drying machine, mix, 2 hours time, install static mixer additional at the spinning manifold charging aperture, to guarantee the uniformity of melt mixed.On the long filament production equipment, carry out spinning, the spinning spinneret micropore is shaped as trilobal cross, spinning condition is: pre-crystallization temperature is 160 ℃, baking temperature is 170 ℃, screw rod is respectively distinguished temperature: 246 ℃, 254 ℃, 262 ℃, 270 ℃, spin manifold temperature is 276 ℃, and the lateral blowing wind speed is 0.4 meter per second, and winding speed is 2200 meters/minute; Drafting multiple is 1.77, and temperature of heat plate is 95 ℃, and draft speed is 700 meters/minute, and setting temperature is 186 ℃, and fiber dimensious is 124dtex/36f, various quality index of gained long filament such as table 3; The gained fiber is made into fabric, fabric is carried out the alkali decrement treatment, reduction rate is controlled at 3%, the moisture pick-up properties of test fabric and uvioresistant performance, specific performance index such as table 4; Fabric after the alkali decrement treatment is extracted fiber out, and electromicroscopic photograph is done in corresponding fibre section, sees Fig. 8.
The quality index of table 2 staple fibre
| Fracture strength CN/dtex | Elongation at break % | Overcut fibre rate % | Over-length fibre content mg/100g | Fault content g/100g | |
| Embodiment 1 | 3.64 | 31.3 | 0.8 | 3.0 | 8.0 |
| Embodiment 2 | 3.57 | 34.7 | 0.9 | 4.0 | 9.0 |
| Embodiment 3 | 3.52 | 39.4 | 0.9 | 5.0 | 10.0 |
| Embodiment 4 | 2.55 | 43.6 | 1.1 | 6.0 | 12.0 |
| Embodiment 5 | 3.61 | 35.2 | 0.8 | 4.0 | 8.0 |
| Embodiment 6 | 4.06 | 35.7 | 0.7 | 4.0 | 8.0 |
Every quality index of table 3 long filament
| Fiber dimensious | Fracture strength CN/dtex | Fracture strength coefficient of variation CV% | Elongation at break % | Elongation at break coefficient of variation | |
| Embodiment | |||||
| 7 | POY 206dtex/36f | 1.80 | 5.32 | 143.53 | 5.40 |
| DT 125dtex/36f | 3.01 | 9.17 | 21.65 | 7.12 | |
| Embodiment 8 | POY 204dtex/36f | 1.82 | 4.04 | 136.40 | 4.50 |
| DT 124dtex/36f | 3.12 | 7.22 | 19.58 | 6.15 |
The performance indications of table 4 fabric
| Measure wicking height (mm) | Water evaporates rate (%) | The UPF value | |
| Embodiment 1 | 42 | 51 | 50+ |
| Embodiment 2 | 106 | 89 | 50+ |
| Embodiment 3 | 115 | 94.6 | 50+ |
| Embodiment 4 | 118 | 96.5 | 50+ |
| Embodiment 5 | 101 | 88 | 50+ |
| Embodiment 6 | 117 | 90 | 50+ |
| | 121 | 96.3 | 50+ |
| Embodiment 8 | 116 | 95.8 | 50+ |
Claims (4)
1. the preparation method of a uvioresistant, quick moisture absorption dry polyester fiber is characterized in that, be with easy alkaline hydrolysis polyester slice as pore former, carry out co-blended spinning with the uvioresistant polyester section and make product, concrete steps are as follows:
(1) blend
With percentage by weight is that the uvioresistant polyester of the easy alkaline hydrolysis polyester of 2-30% and 98-70% is predrying respectively, then mixes in vacuum drum, and incorporation time maintains 1～2 hour;
(2) spinning
Install static mixer additional at the spinning manifold charging aperture, with the uniformity of abundant assurance melt mixed, design spinnerets according to the degree of profile of fiber for 5-30%, spinnerets can select for use micropore to be shaped as two C, three C or three leaves; The raw material that step 1 is mixed carries out pre-crystallization, drying, and the filament spinning component through described spinnerets is housed carries out spinning, make have uvioresistant, the polyester fiber of moisture absorption sweat discharging functions;
(3) control of reduction rate: the fabric that step (2) gained fiber is made into carries out the alkali decrement treatment, and reduction rate is controlled at 3-25%.
2, the preparation method of uvioresistant as claimed in claim 1, quick moisture absorption dry polyester fiber is characterized in that, the content of easy alkaline hydrolysis polyester is 8-15% in the described blended material.
3, the preparation method of uvioresistant as claimed in claim 1, quick moisture absorption dry polyester fiber is characterized in that, the degree of profile of described spinnerets is 10-20%.
4, the preparation method of uvioresistant as claimed in claim 1, quick moisture absorption dry polyester fiber is characterized in that, described reduction rate is 5-15%.
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