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CN1076032C - Fine denier and super-fine denier polypropylene alloy fibre and its prodn. method - Google Patents

Fine denier and super-fine denier polypropylene alloy fibre and its prodn. method Download PDF

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Publication number
CN1076032C
CN1076032C CN95119564A CN95119564A CN1076032C CN 1076032 C CN1076032 C CN 1076032C CN 95119564 A CN95119564 A CN 95119564A CN 95119564 A CN95119564 A CN 95119564A CN 1076032 C CN1076032 C CN 1076032C
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China
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denier
fine
polypropylene
spinning
polypropylene resin
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Expired - Fee Related
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CN95119564A
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CN1151410A (en
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张辉平
贺燕
罗吉江
徐端夫
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Institute of Chemistry CAS
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Institute of Chemistry CAS
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Abstract

The present invention relates to a method for manufacturing a thin denier polypropylene fiber and a super thin denier polypropylene fiber through an alloying polypropylene resin composition. An alloying polypropylene resin composition composed of polymerization grade polypropylene resin with low fluidity, chemical degradation polypropylene resin with high fluidity, one kind or a plurality of kinds of polyethylene resin and a processing auxiliary agent is used as a special spinning material. Melt spinning is carried out on universal spinning equipment to obtain a thin denier polypropylene fiber and a super thin denier polypropylene fiber which have the monofilament size which is from 0.5 to 2.0 denier. Tensile strength is from 2.5 to 6 gram/denier; breaking elongation is from 20 to 140%; spinning stability is good; the disadvantage that a head is broken during the spinning is reduced.

Description

A kind of thin dawn and superfine denier polypropylene alloy fiber and method for making thereof
The present invention relates to a kind of manufacture method of polypropylene fibre, specially refer to the manufacture method of a kind of thin dawn and superfine denier polypropylene fibers.
Traditional theory is thought, make thin dawn and superfine denier polypropylene fibers, require its material resin to have good fluidity of molten, lower molecular weight and narrow molecular weight distribution, it is very difficult poor with stability of spinning process that practice shows with the acrylic resin reduction filament number of above-mentioned characteristic, USP.4 in 1981,296,022 has reported acrylic resin with different molecular weight mix by a certain percentage after, can be used for making polypropylene fibre, the Chinese patent patent No.: 91104649.6 have set forth polymer grade polypropylene resin and the thin dawn of chemical degradation of polypropylene resin composition manufacturing of high workability and the method for superfine denier polypropylene fibers that adopts low flow.
It is poor that the present invention has overcome stability of spinning process, reduce the shortcoming of filament number difficulty, and the method for a kind of usefulness " alloying " polypropylene resin composite thin dawn of manufacturing and superfine denier polypropylene fibers is provided on the basis of the Chinese patent patent No. 91104649.6 patented technologies.
The used spinning PP Pipe Compound of method that the present invention makes thin dawn and superfine denier polypropylene fibers is the polymer grade polypropylene resin by low flow, the chemical degradation of polypropylene resin of high workability, a kind of " alloying " polypropylene resin composite that one or more polyvinyl resins and processing aid combine, the melt flow index MFI of said composition is 20-90 gram/10 minutes, preferable melt flow index is 25-75 gram/10 minutes, the melt flow index MFI of polymer grade polypropylene resin is that the 0.5-10 gram (was pressed ASTM D1238 in/10 minutes in the above-mentioned composition, 230 ℃, 2.16 kilogram), the melt flow index MFI of above-mentioned chemical degradation of polypropylene resin is 15-100 gram/10 minutes, and its molecular weight distributing index Q is 1.2-1.7.(measuring method of Q value is seen polymer communication, 1983,3,234), the melt flow index MFI of above-mentioned polyvinyl resin are 5-55 gram/10 minutes, and above-mentioned processing aid comprises stablizer, FLOW IMPROVERS, tinting material, static inhibitor and dyeing auxiliaries.The manufacture method of thin dawn of the present invention and superfine denier polypropylene fibers is to adopt above-mentioned spinning PP Pipe Compound to carry out melt-spinning on general spinning equipment, spinning temperature is 220-280 ℃, preferable spinning temperature is 240-270 ℃, spinning speed be 500-3500 rice/minute, but make well behaved undrawn yarn of drawing-off or pre-oriented yarn, its cross section is circle or triangle profile, with undrawn yarn or pre-oriented yarn carries out hot drawing-off or hot drawing-off adds bullet, drafting multiple is 1.5-4.0 times, and making filament number is thin dawn and the superfine denier polypropylene multifilament or the low stretch yarn at 0.5-2.0 dawn.
Adopt manufacture method stability of spinning process of the present invention good, reduced broken end, waft the silk shortcoming, the filament number of making is the 0.5-2.0 dawn, its tensile strength is the 2.5-6 gram/dawn, its elongation at break is 20-140%.
Context of the present invention can be with the further additional explanation of the following example, but can not think that the present invention only only limits to these embodiment.
Embodiment 1:
Select " alloying " polypropylene resin composite of following prescription (seeing Table 1) for use, said composition melt flow index MFI is 38 grams/10 minutes, carries out melt-spinning.Spinning speed is 650 meters/minute, spinning temperature is 248 ℃ must arrive the undrawn yarn that the cross section is a trilobal, through drawing temperature is that 120 ℃ and drafting multiple are 3.2 to carry out drawing-off, and obtaining filament number was 1.3 dawn, tensile strength be 4.0 grams but and elongation be 51% fine denier filament.
1,010 0.2 parts of table 1,0.2 part of 0.2 part of Irganox of 0.1 part of 2,6 di tert butyl 4 methyl phenol of calcium stearate of 95 parts of polyvinyl resins of 5 parts of chemical degradation modified polypropenes of spinning formula of special material polymer grade polypropylene (MFI=18 gram/10 minutes)
Embodiment 2:
Select " alloying " polypropylene resin composite of following prescription (seeing Table 2) for use, said composition melt flow index MFI is 37 grams/10 minutes, carries out melt-spinning.Spinning speed is 900 meters/minute, spinning temperature is 248 ℃ must arrive the undrawn yarn that the cross section is a trilobal, through drawing temperature is that 100 ℃ and drafting multiple are 3.2 to carry out drawing-off, and obtaining filament number was 0.8 dawn, and tensile strength is that 5.5 gram/dawn and elongation are 23% fine denier filament.
Table 2,2 parts of 1,010 0.2 parts of embodiment 3 of 0.2 part of Irganox of 0.1 part of 2,6 di tert butyl 4 methyl phenol of calcium stearate of 95 parts of polyvinyl resins of 5 parts of chemical degradation modified polypropenes of spinning formula of special material polymer grade polypropylene (MFI=18 gram/10 minutes):
The alloying polypropylene resin composite that makes by table 3, the melt flow index of said composition is 51 grams/10 minutes, carry out melt-spinning, spinning speed is 1000 meters/minute, spinning temperature is 260 ℃, must arrive the cross section and be circular undrawn yarn, is that 100 ℃ and drafting multiple are 2.5 to carry out drawing-off through drawing temperature, obtaining filament number was 0.9 dawn, and tensile strength is that 3.1 gram/dawn and elongation are 140% fine denier filament.
1,010 0.2 parts of table 3,10 parts of 0.2 part of Irganox of 0.1 part of 2,6 di tert butyl 4 methyl phenol of calcium stearate of 90 parts of polyvinyl resins of 5 parts of chemical degradation modified polypropenes of spinning formula of special material polymer grade polypropylene (MFI=18 gram/10 minutes)
Embodiment 4:
The melt flow index of the alloying polypropylene resin composite said composition that makes by table 3 is 42 grams/10 minutes, carry out melt-spinning, spinning speed is 3200 meters/minute, spinning temperature is 264 ℃, must arrive the cross section is circular pre-oriented yarn, through drawing temperature is that 130 ℃ and drafting multiple are 2.4 to carry out drawing-off, and obtaining filament number was 1.1 dawn, and tensile strength is that 4.3 gram/dawn and elongation are 54% fine denier filament.
1,010 0.2 parts of table 4,2 parts of 0.2 part of Irganox of 0.1 part of 2,6 di tert butyl 4 methyl phenol of calcium stearate of 95 parts of polyvinyl resins of 5 parts of chemical degradation modified polypropenes of spinning formula of special material polymer grade polypropylene (MFI=50 gram/10 minutes)
Four [β-(3,5-di-tert-butyl-4-hydroxyl-phenyl) propionic acid] tetramethylolmethane that above-mentioned Irganox 1010 produces for Beijing Chemical Factory No. 3.

Claims (7)

1、一种细旦和超细旦聚丙烯合金纤维,其特征在于所述的聚丙烯合金纤维所用的原料是由低流动性的聚合级聚丙烯树脂、高流动性的化学降解聚丙烯树脂、一种或几种聚乙烯树脂和加工助剂组合而成的一种“合金化”聚丙烯树脂组合物,该组合物的熔体流动指数MFI为20—90克/10分,单丝纤度为0.5-2旦,合金纤维的截面为圆形、三角异形或三叶形。1, a kind of fine denier and superfine denier polypropylene alloy fiber, it is characterized in that the used raw material of described polypropylene alloy fiber is by the polymer grade polypropylene resin of low fluidity, the chemical degradation polypropylene resin of high fluidity, An "alloyed" polypropylene resin composition formed by combining one or more polyethylene resins and processing aids, the melt flow index MFI of the composition is 20-90 g/10 minutes, and the monofilament fineness is 0.5-2 denier, the cross-section of the alloy fiber is round, triangular or trilobal. 2、根据权利要求1所述的一种细旦和超细旦聚丙烯合金纤维,其特征在于所述的原料的熔体流动指数MFI为25-75克/10分。2. A fine-denier and ultra-fine-denier polypropylene alloy fiber according to claim 1, characterized in that the melt flow index (MFI) of said raw material is 25-75 g/10 min. 3、根据权利要求1所述的一种细旦和超细旦聚丙烯合金纤维,其特征在于所述的聚合级聚丙烯树脂的熔体流动指数MFI为0.5-10克/10分。3. A fine-denier and ultra-fine-denier polypropylene alloy fiber according to claim 1, characterized in that the melt flow index (MFI) of the polymer grade polypropylene resin is 0.5-10 g/10 min. 4、根据权利要求1所述的一种细旦和超细旦聚丙烯合金纤维,其特征在于所述的化学降解聚丙烯树脂的熔体流动指数MFI为15-100克/10分,分子量分布指数Q为1.2-1.7。4. A fine-denier and ultra-fine-denier polypropylene alloy fiber according to claim 1, characterized in that the melt flow index (MFI) of the chemically degraded polypropylene resin is 15-100 g/10 min, and the molecular weight distribution is Index Q is 1.2-1.7. 5、根据权利要求1所述的一种细旦和超细旦聚丙烯合金纤维,其特征在于所述的聚乙烯树脂的熔体流动指数MFI为5-55克/10分。5. A fine and ultrafine denier polypropylene alloy fiber according to claim 1, characterized in that the melt flow index (MFI) of the polyethylene resin is 5-55 g/10 min. 6、根据权利要求1-5所述的一种细旦和超细旦聚丙烯合金纤维的制法,其特征在于采用稳定纺丝工艺进行熔融纺丝,纺丝温度为220-280℃,纺丝速度为500-3500米/分,制成卷绕丝或预取向丝,其截面为圆形或三角异形,将卷绕丝或预取向丝进行热牵伸或热牵伸加弹,牵伸倍数为1.5-4.0倍。6. A method for producing fine-denier and ultra-fine-denier polypropylene alloy fibers according to claims 1-5, which is characterized in that a stable spinning process is used for melt spinning, and the spinning temperature is 220-280°C. The yarn speed is 500-3500 m/min, and it is made into coiled yarn or pre-oriented yarn, whose cross-section is round or triangular shaped, and the coiled yarn or pre-oriented yarn is thermally drawn or thermally stretched and stretched. The multiple is 1.5-4.0 times. 7、根据权利要求6所述的一种细旦和超细旦聚丙烯合金纤维的制法,其特征在于所述的纺丝温度为240-270℃。7. A method for producing fine-denier and ultra-fine-denier polypropylene alloy fibers according to claim 6, characterized in that the spinning temperature is 240-270°C.
CN95119564A 1995-11-24 1995-11-24 Fine denier and super-fine denier polypropylene alloy fibre and its prodn. method Expired - Fee Related CN1076032C (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1086367C (en) * 1998-07-17 2002-06-19 中国科学院化学研究所 Fine PP fiber reinforced cement based composite material, and use thereof
CN1123595C (en) * 1998-08-31 2003-10-08 中国科学院化学研究所 High-flowability polypropylene resin composition and its preparing process and usage
CN1116241C (en) * 2000-04-26 2003-07-30 中国纺织大学化纤科技开发部 Modified polypropene staple for concrete and mortar
US20110052913A1 (en) 2008-01-21 2011-03-03 Mcamish Larry Monofilament fibers comprising at least one filler, and processes for their production
CN107513814B (en) * 2017-07-04 2021-08-06 马鞍山市鑫程纳米新材料科技有限公司 Preparation method for improving elasticity of spun-bonded polypropylene non-woven fabric
CN109535546A (en) * 2018-10-26 2019-03-29 弓立(厦门)医疗用品有限公司 A kind of antibacterial bacteriostatic nonwoven fabric formula

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296022A (en) * 1980-06-04 1981-10-20 Chevron Research Polypropylene blend compositions
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296022A (en) * 1980-06-04 1981-10-20 Chevron Research Polypropylene blend compositions
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

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