Copolymerized polyphenylene sulfide composite fiber manufacture method

A polyphenylene sulfide and composite fiber technology, which is applied in the direction of conjugated synthetic polymer rayon, rayon manufacturing, fiber chemical characteristics, etc., can solve the problems of insufficient mechanical strength of fibers, unclear mechanical properties and strength, etc. The effect of improving the mechanical strength

Active Publication Date: 2008-05-28
德阳科吉高新材料有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of these methods is that the mechanical strength of the product fiber is still not high enough. Although US5405695 divides the heating zone of the melting-filament extruder into three zones, it is only possible to produce long fibers, and its mechanical performance intensity i

Method used

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  • Copolymerized polyphenylene sulfide composite fiber manufacture method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The process used is: fiber-grade copolymerized polyphenylene sulfide resin premixing treatment - vacuuming, twin-screw extruder melting - melt metering pump - forced filtration, spinneret assembly - filament cooling - winding and falling tube; adopt the following process conditions to produce as-spun silk.

[0021] 80kg of fiber-grade copolymerized polyphenylene sulfide resin with a weight-average molecular weight of 40,000 and a polydispersity coefficient of 1.98 with oligomers, cyclic compounds, reaction by-products, and reaction aids impurity content in the resin is no more than 0.1%, Add 5kg polyester resin (PET), 15kg polyether ether ketone (PEEK) resin 100kg, then 3.0kg (3.0%) heat stabilizer nonylphenol polyoxyethylene (4-10) ether phosphate diester and 0.5kg ( 0.5%) Antioxidant is GK-697 added to the fiber-grade copolymerized polyphenylene sulfide resin, stirred evenly by a high-speed mixer, and then extruded through an extruder to obtain composite resin slices,...

Embodiment 2

[0027] Add 5kg of polyester resin (PET), 15kg of polyphenylene sulfide sulfone (PPSS) resin 100kg to 80kg of fiber-grade copolymerized polyphenylene sulfide resin with a weight average molecular weight of 40,000 and its polydispersity coefficient of 1.92, and add 0.1kg (0.1% ) heat stabilizer nonylphenol polyoxyethylene (4-10) ether phosphate monoester and 2.5kg (2.5%) antioxidant GK-697 were added to the fiber-grade copolymerized polyphenylene sulfide resin. The draw ratio of the filaments is 6.8 times; the raw silk winding speed is 2300m / min, and the crystallization and solidification temperature range of the filaments is 510mm. All the other conditions are with embodiment 1.

Embodiment 3

[0029] Add 3kg of polyester resin (PET), 12kg of polyetheretherketone (PEEK) resin 100kg to 85kg of fiber-grade copolymerized polyphenylene sulfide resin with a weight average molecular weight of 50,000 and its polydispersity coefficient of 1.86, and then add 2.0kg (2.0% ) Heat stabilizer nonylphenol polystyrene ether phosphate diethanolamine salt and 1.3kg (1.3%) antioxidant GK-697 were added to the fiber-grade copolymerized polyphenylene sulfide resin, and the rest were the same as in Example 1.

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Abstract

The invention discloses a process for preparing copolyether polyphenylene sulfide composite fiber, raw materials use copolyether polyphenylene sulfide resins which are 80-100 percent by weight, polyester resins which are 5-0 percent by weight, and polyetheretherketone which is 15-0 percent by weight are used in a resin premixed compound treatment. After being stirred and mixed in a high speed, the raw materials are extruded by an extruder, and compound resin resins are obtained, and the weight average molecular weight of polyphenylene sulfide copolymer resin is 40-50 thousand. A spinning extruder has eight temperature ranges, a first range is 150 DEG C, a second range is 300 DGE C, a third range is 315 DGE C, a forth range is 330 DGE C, a fifth range is 330 DGE C, a sixth range is 315 DGE C, a seventh range is 300 DGE C, and an eighth range is 300 DEG C. The holding temperature of a spinning box is 325 DEG C, the crystal curing temperature is controlled at 256 DEG, the drafting rate of strand silk is 6-6.8 times, the roll-up speed of raw silk is 2300-2600 m/min, and the temperature range of crystal curing of the strand silk is 480-510m. The fracture strength of the manufactured copolyether polyphenylene sulfide composite fiber is 7.3 cm/dtex, and the average limited oxygen index is bigger than 47.

Description

Technical field [0001] The invention belongs to the field of manufacturing special fibers, in particular to a method for manufacturing fiber-level copolymerized polyphenylene sulfide composite fibers. Background technique [0002] Polyphenylene sulfide has excellent chemical resistance and thermal stability at high temperature, and has flame retardancy, insulation, radiation resistance and good mechanical properties; in order to expand the scope of use of this material, researchers from various countries have been looking for A new approach to fibrosis. [0003] Disclosed in Chinese patent CN1603477 is a kind of method of melt spinning and stretching heat setting of linear high molecular weight polyphenylene sulfide fiber grade resin; Chinese patent CN1876906 discloses the manufacture method of polyphenylene sulfide long fiber; The method of polyphenylene sulfide fiber obtained by melting polyphenylene sulfide resin is introduced in . The disadvantage of these methods is t...

Claims

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Application Information

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IPC IPC(8): D01F8/16D01F8/14D01F1/10D01D5/08
Inventor 陈逊
Owner 德阳科吉高新材料有限责任公司
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