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Modified polyphenylene sulfide fiber and method for making same

A technology of polyphenylene sulfide fiber and polyphenylene sulfide, which is applied in the field of preparation of modified polyphenylene sulfide fiber, can solve the problem of low linearity of polyphenylene sulfide resin, high spinning temperature of polyphenylene sulfide, stretching To solve the problems of low elongation, toughness and strength, etc., to achieve the effect of improving gloss, reducing spinning cost and improving fluidity

Inactive Publication Date: 2008-05-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, because the linearity of polyphenylene sulfide resin is not high, and the spinning temperature of polyphenylene sulfide is too high, the fluidity is not good, the continuity of the spun fiber is not good, the tensile toughness and strength are not high, making polyphenylene sulfide The industrial production of ether fiber has not yet been solved
[0005] At present, there are not many reports on polyphenylene sulfide melt spinning. Patents CN100999833A and CN1603477A are all optimized from the spinning equipment and spinning process to improve the production rate and mechanical properties of fibers, but the spinning process is complicated. and cost increase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Nano silica surface treatment method:

[0024] Dissolve 10 grams of silane coupling agent in 1000 ml of ethanol, add 100 grams of silicon dioxide with a particle size of 20 to 60 nanometers, stir and reflux at a constant temperature of 80 ° C for 10 hours, vacuum filter the solvent, and dry it in vacuum to obtain surface-treated Nano silica.

[0025] Said silane coupling agent is KH550, which is a product of Nanjing Nengde Chemical Co., Ltd.

Embodiment 2

[0027] In the polyphenylene sulfide resin of 100 parts by weight, add 0.5 parts by weight of the embodiment 1 through the surface-treated nano-silica, extrude blending and granulation with twin-screw, the screw speed is 50r / min, each screw temperature zone The temperature is shown in Table 1:

[0028] Table 1 The temperature of each temperature zone of the twin-screw extruder

[0029] DIE area

[0030] After granulation, it was pre-crystallized and dried in a vacuum oven. The initial drying temperature was 60°C, the heating rate was 20°C / hour, and the temperature was raised to 120°C. The total drying time was 12h. Melt spinning is carried out after drying. Spinning conditions: the spinneret has 28 holes; the hole diameter is 0.6mm; the temperature of the first zone of the screw is 322°C, the temperature of the second zone of the screw is 327°C, and the temperature of the box is 313°C; the metering pump: 35r / min; Fiber winding speed: 250r / min. Drawing process: the t...

Embodiment 3

[0032] In the polyphenylene sulfide resin of 100 parts by weight, add 1.0 parts by weight of nano silicon dioxide through surface treatment of embodiment 1, extrude blending granulation with twin-screw, screw speed is 50r / min, each screw rod temperature zone The temperature is shown in Table 2:

[0033] Table 2 The temperature of each temperature zone of the twin-screw extruder

[0034] DIE area

[0035] After granulation, pre-crystallize and dry in a vacuum oven. The initial drying temperature is 50°C, the heating rate is 30°C / hour, and the temperature is raised to 120°C. The total drying time is 12h. Melt spinning is carried out after drying. Spinning conditions: spinneret is 28 holes; hole diameter is 0.6mm; temperature in the first zone of the screw is 319°C, temperature in the second zone of the screw is 315°C, temperature of the box is 311°C; metering pump: 35r / min; Fiber winding speed: 250r / min. Drawing process: the temperature of the hot plate is 90° C., th...

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Abstract

The invention provides a modified polyphenylene sulfide fiber and process for preparing, whose components and parts by weight comprise 100 parts of polyphenylene sulfide and 0.2-2 parts of nano-silica whose surface is treated, the particle size of the silica is 20-60 nanometer, and the denier of the fiber is 85-91 dtax. The invention prepares the polyphenylene sulfide fiber through modifying polyphenylene sulfide resins and using special spinning process, the fiber strength and tension toughness are all improved, simultaneously, the glossiness of the fiber is further improved, the spinning is capable of being done by a common spinning device, the cost of spinning is reduced, the fluidity of substrate is changed better during spinning, the temperature of spinning is reduced by 5-10 DGE C, the draft multiple of as-spun fiber is improved, and the mechanical properties of the fiber are capable of being improved.

Description

technical field [0001] The invention relates to a polyphenylene sulfide fiber and a preparation method thereof, in particular to a preparation method of a modified polyphenylene sulfide fiber. Background technique [0002] Polyphenylene sulfide is referred to as PPS (Polyphenylene Sulfide), and its full name is polyphenylene sulfide, also known as polyphenylene sulfide. The crystalline thermoplastic material has many excellent characteristics, such as high thermal stability, chemical corrosion resistance, flame retardancy, electrical insulation properties, etc. [0003] Polyphenylene sulfide was first developed by Phillips Company of the United States and realized industrial production in 1971. In 1973, a 2600t / a scale production device was built; in 1979, a high molecular weight linear PPS resin suitable for spinning was synthesized and industrialized production was realized. , the PPS material with the brand name "Ryton" was produced and put on the market, which was high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10D01D5/08
Inventor 张瑜欧阳芬陈彦模胡锡龙朱美芳闫波
Owner DONGHUA UNIV
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