CN1068075C - Low-temp spinning technique for polypropylene fibre - Google Patents
Low-temp spinning technique for polypropylene fibre Download PDFInfo
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- CN1068075C CN1068075C CN98117715A CN98117715A CN1068075C CN 1068075 C CN1068075 C CN 1068075C CN 98117715 A CN98117715 A CN 98117715A CN 98117715 A CN98117715 A CN 98117715A CN 1068075 C CN1068075 C CN 1068075C
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- spinning
- polypropylene
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- polypropylene fibre
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- 238000009987 spinning Methods 0.000 title claims abstract description 68
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 49
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 47
- -1 polypropylene Polymers 0.000 title claims abstract description 44
- 239000000835 fiber Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 14
- 238000002074 melt spinning Methods 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 7
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 238000002144 chemical decomposition reaction Methods 0.000 claims description 4
- 238000007334 copolymerization reaction Methods 0.000 claims description 4
- 229920001903 high density polyethylene Polymers 0.000 claims description 4
- 239000004700 high-density polyethylene Substances 0.000 claims description 4
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 4
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 4
- 229920001684 low density polyethylene Polymers 0.000 claims description 4
- 239000004702 low-density polyethylene Substances 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 238000007664 blowing Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 208000012886 Vertigo Diseases 0.000 description 54
- 239000000805 composite resin Substances 0.000 description 12
- 238000001035 drying Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
Abstract
本发明一种聚丙烯纤维的低温纺丝技术是采用一种聚丙烯纺丝专用组合物在现有普通的熔体纺丝设备上，在熔融温度180-230℃经螺杆挤出，300-1200m/min的纺丝速度下纺丝，经吹风冷却成卷绕丝，卷绕丝经温度为60-150℃间的二道牵伸，总牵伸倍数为2.0-6.0，得到成品丝。可制造力学性能优良的0.6-2.0dtex细旦、超细旦聚丙烯纤维和强度达8g/d聚丙烯强力纤维。A low-temperature spinning technology for polypropylene fibers of the present invention is to use a special composition for polypropylene spinning on existing common melt spinning equipment, and extrude it through a screw at a melting temperature of 180-230 ° C, 300-1200m It is spun at a spinning speed of 1/min, cooled by air blowing to form coiled yarns, and the coiled yarns are drawn in two passes at a temperature of 60-150°C, with a total draft ratio of 2.0-6.0 to obtain finished yarns. It can produce 0.6-2.0dtex fine denier, ultra-fine denier polypropylene fiber and polypropylene strong fiber with strength up to 8g/d with excellent mechanical properties.
Description
The present invention relates to a kind of spining technology of polypropylene fibre.
A large amount of spinning experiments show, reasons such as molecular weight, molecular weight distribution and impurity content owing to the commodity acrylic resin, the machinability of polymer is poor, causes exceeding the temperature spinning more than 100 ℃ of polypropylene fusing point, all is difficult to stably spin smoothly superior in quality finished fiber." Kingsoft oiling fibre " 1995 (4), 22-26 and 1997 (2), the 15-16 report, because of the mobile index difference of resin melt, spinning temperature is at 270-290 ℃." synthetic fiber industry " (Vol.19 (5) 50-51) has reported lower spinning temperature, 250-270 ℃.The spinning temperature of above-mentioned prior art is higher, can cause the degraded of resin in the spinning process, causes the uniformity and the long-time stability of restive polypropylene fibre production process.The spinning temperature of " Journal ofApplied Polymer Science " (Vol.56,1761-1779 (1995)) report is at 210-240 ℃.Even so, resin still has degraded in the spinning process." Journal of Applied Polymer Science " (Vol.58,1619-1632 (1997)) report spins polypropylene fibre with Barmag FEL type compact spinning unit, and resin M FI is 20,25, though spinning temperature can hang down to 220 ℃, its spinning speed is lower than 100m/min.And the spinning speed of general general apparatus for melt spinning is about 1000m/min.The spinning speed of high-speed spinning machine is then higher.
The low-temp spinning technique of a kind of polypropylene fibre of the present invention has overcome the degraded of resin in the high and consequent spinning process of spinning temperature in the past and provides that a kind of spinning temperature is low, spinning speed is higher, and produces the spining technology of the good polypropylene fibre of fibre property.
The low-temp spinning technique of polypropylene fibre of the present invention is to adopt the polypropylene dedicated resin combination of number of patent application 98117712.3 disclosed a kind of low-temp spinnings.It provides a kind of polypropylene resin composite of good flowing properties at the technical difficulty in existing polypropylene fibre (the comprising thin dawn superfine Denier fibre) manufacturing, and this spinning comprises following component and content (weight fraction) with polypropylene resin composite:
Constituent content
The polypropylene homopolymer 80-95 of chemical degradation modification
Polymer grade copolymerization or homo-polypropylene PP 1-10
HDPE 0.1-10
LDPE or LLDPE 0.1-3
Calcium stearate 0.1-0.3
2,6-di-tert-butyl-4-methy phenol 0.1-0.5
The melt flow index of above-mentioned chemical degradation modified polypropene is 50-200, and preferable scope is 50-150;
The melt flow index of above-mentioned polymer grade copolymerization or homo-polypropylene is at 0.2-10;
The melt flow index of above-mentioned HDPE is 1-30;
The melt flow index of above-mentioned LDPE or LLDPE is at 0.2-10.
The manufacture method of above-mentioned composition is as follows: with content is that the above-mentioned chemical degradation modified polypropene of 80-95, content are that the above-mentioned polymer grade copolymerization of 1-10 or homo-polypropylene, content are 2 of the HDPE of 0.1-5 and above-mentioned LDPE that content is 0.1-3 or 0.1-3 part LLDPE and 0.2 part, 6-di-tert-butyl-4-methy phenol, 0.1 part calcium stearate mix, and extrude on 180-230 ℃ of following double screw extruder then, the Cast Strip, be a granulated into polypropene composition.
The low-temp spinning technique of a kind of polypropylene fibre of the present invention is on the basis of foregoing invention, a kind of corresponding spinning technology parameter on general spinning equipment is provided, has made the manufacturing technology of thin dawn of 0.6-1.5dtex, superfine denier polypropylene fibers and polypropylene strong fiber.This method can manufacturing dimension fine-denier polypropylene, superfine denier polypropylene fibers and intensity stable, good mechanical performance reach the above polypropylene strong fiber of 8g/d.The low-temp spinning technique of polypropylene fibre of the present invention is to adopt the spinning dedicated set compound of foregoing invention to carry out melt spinning on existing common polypropylene fibre, PET melt equipment.Spinning is undertaken by following technology, step:
The section of 1 polypropylene resin composite is 100-130 ℃ of drying;
2 extrude through screw rod at melt temperature 180-230 ℃, and spinning under spinning speed 300-1200m/min, are cooled to undrawn yarn through blowing;
3 undrawn yarns are two road drawing-offs between 60-150 ℃ through temperature, and the total draft multiple is 2.0-6.0, obtains finished silk.
A kind of polypropylene spinning technology of the present invention has that spinning temperature is low, production efficiency is high, energy consumption is low, fibre property is good, can prepare good thin dawn of fibre property, superfine denier polypropylene fibers and polypropylene strong fiber.A kind of polypropylene spinning technology of the present invention has spinning and the stable advantage of draft process.
The present invention intends by following embodiment and Comparative Examples simple declaration characteristics of the present invention and advantage, but can not think that the present invention only only limits to the content of embodiment.Embodiment 1
Selecting melt flow index for use is that 50 above-mentioned polypropylene resin composite is extruded through screw rod for 180 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 500m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 1.Embodiment 2
Selecting melt flow index for use is that 50 above-mentioned polypropylene resin composite is extruded through screw rod for 180 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 750m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 1.Embodiment 3
Selecting melt flow index for use is that 50 above-mentioned polypropylene resin composite is extruded through screw rod for 210 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 1000m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 1.Embodiment 4
Selecting melt flow index for use is that 50 above-mentioned polypropylene resin composite is extruded through screw rod for 230 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 1000m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 1.
Table 1 embodiment 1-4
Embodiment 5
| Embodiment | 1 | 2 | 3 | 4 | |
| Spinning temperature (℃) | 180 | 180 | 210 | 230 | |
| Spinning speed (m/min) | 500 | 750 | 1000 | 1000 | |
| Undrawn yarn fiber number (dtex) | 5.28 | 3.57 | 2.88 | 2.80 | |
| The drafted fibre physical property | Fiber number (dtex) | 1.32 | 1.30 | 1.30 | 1.24 |
| Intensity (cN/dtex) | 5.59 | 4.88 | 4.24 | 4.54 | |
| Elongation (%) | 52.0 | 57.8 | 54.5 | 49.6 | |
Selecting melt flow index for use is that 60 above-mentioned polypropylene resin composite is extruded through screw rod for 180 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 750m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 2.Embodiment 6
Selecting melt flow index for use is that 80 above-mentioned polypropylene resin composite is extruded through screw rod for 190 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 750m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 2.Embodiment 7
Selecting melt flow index for use is that 100 above-mentioned polypropylene resin composite is extruded through screw rod for 180 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 750m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 2.Embodiment 8
Selecting melt flow index for use is that 120 above-mentioned polypropylene resin composite is extruded through screw rod for 180 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 750m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 2.Embodiment 9
Selecting melt flow index for use is that 100 above-mentioned polypropylene resin composite is extruded through screw rod for 190 ℃ in 100-130 ℃ of drying, melt temperature, and spinning under spinning speed 300m/min, be cooled to undrawn yarn through blowing, undrawn yarn is two road drawing-offs between 60-150 ℃ through hot drawing temperature, the total draft multiple is 2.0-6.0, and the performance that obtains finished silk sees Table 2.
Table 2 embodiment 5-9
| Embodiment | 5 | 6 | 7 | 8 | 9 | |
| Spinning temperature (℃) | 180 | 190 | 190 | 190 | 190 | |
| Spinning speed (m/min) | 750 | 750 | 750 | 750 | 300 | |
| Undrawn yarn fiber number (dtex) | 2.81 | 3.57 | 2.94 | 3.13 | 7.70 | |
| The drafted fibre physical property | Fiber number (dtex) | 0.73 | 0.97 | 0.88 | 0.98 | 1.87 |
| Intensity (cN/dtex) | 7.43 | 5.36 | 4.83 | 4.80 | 4.25 | |
| Elongation (%) | 31.4 | 40.0 | 70.1 | 88.0 | 58.6 | |
Claims (4)
1 one kinds of polypropylene fibre low-temp spinning methods, it is characterized in that it is/10 minutes speciality resin for spinning of 50-120 gram that this spinning process adopts melt flow index, carry out melt spinning at 180-230 ℃, be spun into undrawn yarn under the melt spinning speed 300-1200m/min, above-mentioned undrawn yarn carries out two road drawing-offs then between 60-150 ℃, obtain finished silk.
2 polypropylene fibre low-temp spinning methods according to claim 1 is characterized in that described speciality resin for spinning comprises following component and content (weight fraction):
Constituent content
The polypropylene homopolymer 80-95 of chemical degradation modification
Polymer grade copolymerization or homo-polypropylene PP 1-10
HDPE 0.1-10
LDPE or LLDPE 0.1-3
Calcium stearate 0.1-0.3
2,6-di-tert-butyl-4-methy phenol 0.1-0.5
3 polypropylene fibre low-temp spinning methods according to claim 1, the total draft multiple that it is characterized in that described finished silk is 2.0-6.0.
4 polypropylene fibre low-temp spinning methods according to claim 1 is characterized in that described finished silk is that filament number is thin dawn, the superfine denier polypropylene fibers of 0.6-1.5dtex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98117715A CN1068075C (en) | 1998-08-31 | 1998-08-31 | Low-temp spinning technique for polypropylene fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98117715A CN1068075C (en) | 1998-08-31 | 1998-08-31 | Low-temp spinning technique for polypropylene fibre |
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| Publication Number | Publication Date |
|---|---|
| CN1246549A CN1246549A (en) | 2000-03-08 |
| CN1068075C true CN1068075C (en) | 2001-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98117715A Expired - Fee Related CN1068075C (en) | 1998-08-31 | 1998-08-31 | Low-temp spinning technique for polypropylene fibre |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102234850B (en) * | 2010-05-07 | 2015-04-01 | 上海启鹏工程材料科技有限公司 | Preparation method of high-strength mekralon |
| CN102251304B (en) * | 2011-05-23 | 2013-10-16 | 宁波大成新材料股份有限公司 | High-strength and high-modulus polypropylene fiber production method |
| CN111978632A (en) * | 2020-08-04 | 2020-11-24 | 南通新帝克单丝科技股份有限公司 | Polypropylene fiber anti-aging agent master batch, preparation method thereof and polypropylene fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043870A (en) * | 1988-08-10 | 1990-07-18 | 菲利普莫里斯产品有限公司 | Polyolefin filter fiber bundle and its manufacturing method |
| CN1068603A (en) * | 1991-07-13 | 1993-02-03 | 中国科学院化学研究所 | Process for the manufacture of fine and ultrafine denier polypropylene fibers |
| US5637666A (en) * | 1992-12-02 | 1997-06-10 | Hoechst Aktiengesellschaft | Polyolefin molding composition for producing fibers, filaments and webs by melt spinning |
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1998
- 1998-08-31 CN CN98117715A patent/CN1068075C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043870A (en) * | 1988-08-10 | 1990-07-18 | 菲利普莫里斯产品有限公司 | Polyolefin filter fiber bundle and its manufacturing method |
| CN1068603A (en) * | 1991-07-13 | 1993-02-03 | 中国科学院化学研究所 | Process for the manufacture of fine and ultrafine denier polypropylene fibers |
| US5637666A (en) * | 1992-12-02 | 1997-06-10 | Hoechst Aktiengesellschaft | Polyolefin molding composition for producing fibers, filaments and webs by melt spinning |
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| CN1246549A (en) | 2000-03-08 |
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