CN100406623C - Process for preparing polypropylene/polyester alloy fiber - Google Patents
Process for preparing polypropylene/polyester alloy fiber Download PDFInfo
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- CN100406623C CN100406623C CNB2006100290334A CN200610029033A CN100406623C CN 100406623 C CN100406623 C CN 100406623C CN B2006100290334 A CNB2006100290334 A CN B2006100290334A CN 200610029033 A CN200610029033 A CN 200610029033A CN 100406623 C CN100406623 C CN 100406623C
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- polypropylene
- polyester
- alloy fiber
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- acrylic acid
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Abstract
The present invention discloses polypropylene/polyester alloy fiber preparation method. It contains 1, locating polyester vacuum oven with vacuum -0.04-0.08 MPa, keeping two hr. at 90 degree centigrade to make pre - crystallizing, then putting polypropylene, compatibilizing agent polypropylene graft acrylic acid in vacuum oven drying; 2, putting dried weight ratio 20-5 : 80-95 polyester, polypropylene and polyester weight 50per cent compatibilizing agent polypropylene graft acrylic acid in storing tube to make premixing and continuously feeding double screw extrusion machine; 3, setting cross blend spinning machine first to twelfth zone temperature and bath temperature being 270 degree centigrade, wind speed being 600-200m/min, to obtain polypropylene/polyester alloy fiber. The present invention raises intensity, module, thermal shrinkage property and other performance.
Description
Technical field
The present invention relates to a kind of preparation method of alloy material, relate to the preparation method of a kind of polypropylene (PP)/polyester (PET) alloy fiber.
Background technology
PP is of many uses, and since the nineteen fifty-nine suitability for industrialized production, developing rapidly becomes one of main member of synthetic fiber family, and main cause is the inherent characteristic of PP: light weight, water absorption rate is low, chemical resistance good; But its modulus, intensity are low, and wearing comfort is poor, have limited it in the application with fiber art of the industry of clothes that need conformality and deformation resistance.On the other hand, PET goods good heat resistance, modulus and intensity height, but its water absorption rate height, facile hydrolysis.With PP and PET co-blended spinning, and utilizing heat resistance, intensity and the modulus of PET, is to strengthen body with PET, and PP is a continuous phase, and expection can obtain the well behaved alloy fiber of comprehensive the two advantage.Yet PP is a non-polar high polymer, and PET is the polarity macromolecule, and the solubility parameters of the two also differs big (PP: δ=7.9～8.1, PET: δ=10.7), thereby the PP/PET co-mixing system is incompatible system on thermodynamics and kinetics.The quality of the compatibility of co-mixing system is every performance of decision alloy material directly, usually, adds appropriate compatilizer in the PP/PET system, and system is carried out increase-volume, improves its compatibility, and then reduces the size of decentralized photo, is a kind of good method.Though, substantially all be the application study in the plastics field about to the increase-volume of PP/PET co-mixing system and then improve its Mechanical Properties and patent existing (for example patent CN01128896.5).Because preparation PP/PET alloy fiber and PP/PET plastic alloy have tangible difference, particularly owing to the diameter that is used for textile fabric is very little, generally between 4～40 μ m, the size of dispersed phase size has had a strong impact on the final mechanical property of goods fibers, even has determined whether processing can be carried out smoothly.Therefore, the preparation alloy fiber also wants strict a lot of more than plastic alloy to the requirement of dispersed phase size.Utilize prior art for preparing polypropylene/polyester alloy fiber to have the following disadvantages or defective: (1) step is various, and efficient is low.---the spinning that twin-screw blend instrument carries out granulation---baking is expected again---of this alloy fiber step of prior art for preparing: baking material.During (2) with the prior art for preparing alloy fiber, step is many, so polyester or contain the easy high temperature degradation of section of polyester.During (3) with the prior art for preparing alloy fiber, though after the twin-screw blend granulation, the size of decentralized photo and distribution can reach spinning condition, but when melt spinning once more, decentralized photo is at high temperature assembled again, cause dispersed phase size to increase, thereby cause the alloy fiber decreased performance, even can't spinning.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of polypropylene/polyester alloy fiber, to remedy the deficiencies in the prior art or defective, meets the demands of production and living.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: the preparation method of polypropylene/polyester alloy fiber comprises the steps:
(1) polyester (PET) is placed vacuum be-vacuum drying oven of 0.04Mpa～0.08Mpa in, kept two hours at 90 ℃, make its pre-crystallization, then 120 ℃ of dryings 12～24 hours, polypropylene (PP) is placed in the vacuum drying oven, 100 ℃ of dryings 12～24 hours; 50 ℃ of dryings of the polypropylene grafted acrylic acid of compatilizer 6～12 hours, the moisture 0～40ppm that is controlled at of three kinds of raw materials;
(2) be that 80～95: 20～5 polypropylene and polyester and the polypropylene grafted acrylic acid of compatilizer that accounts for weight polyester 50% place in the material storage tube of twin-screw co-blended spinning machine and carries out premixed with weight ratio;
(3) district to the No.12 District temperature that the co-blended spinning machine is set is: 70 ℃ in a district, 100 ℃ in two districts, 220 ℃ in three districts, 265 ℃ in four districts, 270 ℃ in five districts, 275 ℃ in six districts, 275 ℃ in seven districts, 275 ℃ in eight districts, 265 ℃ in nine districts, 265 ℃ in ten districts, 265 ℃ in Shi Yi district, 265 ℃ of No.12 Districts, melt temperature is 270 ℃, and winding speed is 600～1200m/min, by the package (for long filament) of up-coiler coiled definite shape or evenly fall into fiber barrel (for staple fibre), for next step processing, make polypropylene/polyester alloy fiber.
As optimized technical scheme: used polyacrylic melt index is 16～32, and the inherent viscosity of described polyester is 0.62～0.90.
The invention has the beneficial effects as follows:
1, the present invention's raw material of preparing alloy fiber is existing spinning material, and the alloy fiber that makes is than the intensity of polypropylene fibre, modulus, heat-shrinkable and other performance all are greatly improved, thereby this method prepares alloy fiber and has raw material and be easy to get, and cost is low, product price ratio advantages of higher.
2, technology of the present invention is simple, is easy to control, and its equipment can be reequiped on existing twin-screw blending equipment or spinning equipment, thereby can significantly reduce investment amount.
3, good with the alloy fiber combination property of the present invention's preparation, intensity, modulus, heat resistance, ABRASION RESISTANCE and wearing comfort all improve.
The specific embodiment
Embodiment 1
Will
PolyesterPlace vacuum be-vacuum drying oven of 0.04Mpa in, kept two hours at 90 ℃, make its pre-crystallization, then 120 ℃ of dryings 12 hours, polypropylene is placed in the vacuum drying oven, 100 ℃ of dryings 12 hours; 50 ℃ of dryings of the polypropylene grafted acrylic acid of compatilizer 6 hours, with weight ratio is the material storage tube that 95: 5 PP and PET blend and the polypropylene grafted acrylic acid of compatilizer (PP-g-AA) that accounts for blend gross weight 2.5% are put into the co-blended spinning machine in the lump, under the continuous stirring state, progress into the throat-fed of double screw extruder.Blend is quantitatively pressed melt through filament spinning component by spinning pump after melt extruding, and the pore on the spinnerets extrudes and becomes thread from assembly, and the melt thread is in spinning shaft behind the cooling forming, by the package of up-coiler coiled definite shape.
Double screw extruder one to No.12 District temperature is set to be respectively: 70 ℃, 100 ℃, 220 ℃, 265 ℃, 270 ℃, 275 ℃, 275 ℃, 275 ℃, 265 ℃, 265 ℃, 265 ℃, 265 ℃, melt temperature is 270 ℃.Winding speed is 800m/min, and heat dish draft temperature is 50 ℃, and multiplying power is 4.2 times.The hot plate stretching temperature is 115 ℃, and multiple is 1.19 times.Finally obtain the alloy fiber in 72d/24 hole.
Embodiment 2:
Polyester and polypropylene with embodiment 1 method drying, are added the PP-g-AA of blend gross weight 5%, then with embodiment 1 condition and technology spinning.
Embodiment 3:
Polyester and polypropylene with embodiment 1 method drying, are added the PP-g-AA of blend gross weight 7.5%, then with embodiment 1 condition and technology spinning.
Embodiment 4:
Polyester and polypropylene with embodiment 1 method drying, are added the PP-g-AA of blend gross weight 10%, then with embodiment 1 condition and technology spinning.
Reference examples:
Polypropylene with embodiment 1 method drying, is used then with embodiment 1 condition and technology spinning.Obtain the polypropylene fibre silk and be used for the performance contrast.
Intensity, modulus, percentage elongation and the boiling water shrinkage of above-mentioned four kinds of embodiment and contrast polypropylene fibre silk be as shown in Table 1:
| Different component | Intensity (cN/dtex) | Modulus (cN/dtex) | Percentage elongation (%) | 80 ℃, 10 minutes processing post-shrinkage ratios (%) |
| PP | 3.5 | 26 | 38 | 10 |
| 95/5 | 4.0 | 38 | 32 | 8 |
| 90/10 | 4.6 | 40 | 30 | 7 |
| 85/15 | 4.3 | 35 | 23 | 5.5 |
| 80/20 | 4.2 | 30 | 20 | 3 |
As can be seen from the table, the alloy fiber of the present invention preparation is than the intensity of polypropylene fibre, modulus, and performances such as heat-shrinkable all are greatly improved.
Claims (2)
1. the preparation method of polypropylene/polyester alloy fiber is characterized in that, comprises the steps:
(1) polyester is placed vacuum be-vacuum drying oven of 0.04Mpa～0.08Mpa in, kept two hours at 90 ℃, make its pre-crystallization, then 120 ℃ of dryings 12～24 hours, polypropylene is placed in the vacuum drying oven, 100 ℃ of dryings 12～24 hours; 50 ℃ of dryings of the polypropylene grafted acrylic acid of compatilizer 6～12 hours, the moisture 0～40ppm that is controlled at of three kinds of raw materials;
(2) be that 20～5: 80～95 polyester, polypropylene and the polypropylene grafted acrylic acid of compatilizer that accounts for weight polyester 50% place and carries out premix in the material storage tube and merge feeding double screw extruder continuously with dried weight ratio;
(3) district to the No.12 District temperature that the co-blended spinning machine is set is respectively: 70 ℃, 100 ℃, 220 ℃, 265 ℃, 270 ℃, 275 ℃, 275 ℃, 275 ℃, 265 ℃, 265 ℃, 265 ℃, 265 ℃, melt temperature is 270 ℃, winding speed is 600～1200m/min, makes polypropylene/polyester alloy fiber.
2. preparation method according to claim 1 is characterized in that: used polyacrylic melt index is 16～32, and the inherent viscosity of described polyester is 0.62～0.90.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100290334A CN100406623C (en) | 2006-07-18 | 2006-07-18 | Process for preparing polypropylene/polyester alloy fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100290334A CN100406623C (en) | 2006-07-18 | 2006-07-18 | Process for preparing polypropylene/polyester alloy fiber |
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| Publication Number | Publication Date |
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| CN1900390A CN1900390A (en) | 2007-01-24 |
| CN100406623C true CN100406623C (en) | 2008-07-30 |
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| CNB2006100290334A Expired - Fee Related CN100406623C (en) | 2006-07-18 | 2006-07-18 | Process for preparing polypropylene/polyester alloy fiber |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486817B (en) * | 2009-02-20 | 2013-02-13 | 华南理工大学 | High melt strength polypropylene material and preparation |
| ES2355220B2 (en) * | 2009-08-17 | 2011-09-19 | Sp Kloner Ecotec, S.L. | STRUCTURAL PROFILES FOR THE MANUFACTURE OF DOMESTIC UTENSILS AND PROCESS TO OBTAIN THOSE PROFILES. |
| CN102660079A (en) * | 2012-05-30 | 2012-09-12 | 陕西理工学院 | Preparation method of polypropylene/ bagasse composite material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04149273A (en) * | 1990-10-12 | 1992-05-22 | Kubokou Paint Kk | Polymer alloy and its production |
| JPH0625912A (en) * | 1992-07-02 | 1994-02-01 | Suminoe Textile Co Ltd | Readily dyeable yarn and its production |
| CN1030620C (en) * | 1992-09-29 | 1996-01-03 | 中国纺织大学 | Blended resin for the use of polypropylene fibre fine denier yarn and superfine denier yarn, production and application |
| CN1128183C (en) * | 2001-09-25 | 2003-11-19 | 四川大学 | Process and apparatus for preparing polyolefin/polyglycol terephthalate in-situ micro-fibril reinforced composite material |
-
2006
- 2006-07-18 CN CNB2006100290334A patent/CN100406623C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04149273A (en) * | 1990-10-12 | 1992-05-22 | Kubokou Paint Kk | Polymer alloy and its production |
| JPH0625912A (en) * | 1992-07-02 | 1994-02-01 | Suminoe Textile Co Ltd | Readily dyeable yarn and its production |
| CN1030620C (en) * | 1992-09-29 | 1996-01-03 | 中国纺织大学 | Blended resin for the use of polypropylene fibre fine denier yarn and superfine denier yarn, production and application |
| CN1128183C (en) * | 2001-09-25 | 2003-11-19 | 四川大学 | Process and apparatus for preparing polyolefin/polyglycol terephthalate in-situ micro-fibril reinforced composite material |
Non-Patent Citations (2)
| Title |
|---|
| 丙烯酸接枝聚丙烯对聚丙烯/环氧化三元乙丙橡胶共混体系形态和性能的影响 2006年第3期 43-47页. 孙伟权等.《中国塑料》，第20卷第3期. 2006 |
| 丙烯酸接枝聚丙烯对聚丙烯/环氧化三元乙丙橡胶共混体系形态和性能的影响 2006年第3期 43-47页. 孙伟权等.《中国塑料》，第20卷第3期. 2006 * |
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Application publication date: 20070124 Assignee: Wuxi Jintong Fiber Co., Ltd. Assignor: Donghua University Contract record no.: 2010320000386 Denomination of invention: Process for preparing polypropylene/polyester alloy fiber Granted publication date: 20080730 License type: Exclusive License Record date: 20100412 |
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