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Sub-patterned polyphenylene sulfide fibre manufacturing technology and equipment

A technology of polyphenylene sulfide fiber and manufacturing technology, which is applied in the field of research and development of manufacturing technology and equipment, can solve problems such as inability to produce fibers, and achieve the effects of simple methods, broadening sources, and overcoming uneven molecular weight distribution of melts

Inactive Publication Date: 2008-02-06
孙亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore injection molding grade resins are not capable of producing fibers

Method used

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  • Sub-patterned polyphenylene sulfide fibre manufacturing technology and equipment

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Effect test

Embodiment 1

[0015] The equipment structure of the present invention is as shown in the accompanying drawings, with a solid-phase polymerizer (3) at the rear of the hopper (1). There is a feed screw (2) between the hopper and the solid phase polymerizer. At the rear of the solid state polymerizer is the spinning beam (5). There is a discharge screw (4) between the solid state polymerizer and the spinning box body. The feeding hopper, feeding screw, solid phase polymerizer, discharging screw and spinning box are connected to each other through pipelines.

Embodiment 2

[0017] The resin raw material enters the solid-phase polymerizer from the hopper for solid-phase polymerization. The temperature of the solid-phase polymerization is 240° C., and the negative pressure vacuum in the solid-phase polymerizer is 400mmhg. The polymerization time was 4 hours.

[0018] The extrusion pressure of the screw is 80kg / cm 2 , The temperature in each zone is between 295 and 330 °C.

[0019] The pre-stretching ratio of spinning is more than 80 times, and the spinning speed is more than 400m / min.

[0020] The stretching ratio during drafting is more than 3.5, and the ideal polyphenylene sulfide fiber can be produced by adopting the present invention.

Embodiment 3

[0022] The resin raw material enters the solid-phase polymerizer from the hopper for solid-phase polymerization. The temperature of the solid-phase polymerization is 250° C., and the negative pressure vacuum in the solid-phase polymerizer is 500 mmhg. The polymerization time was 5 hours.

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Abstract

A technology and an equipment for manufacturing of sub-linear polyphenylene sulfide fiber belong to the research and development field of manufacturing technology and equipment of sub-linear polyphenylene sulfide fiber. Using injection-grade polyphenylene sulfide resin as the raw production material, the present invention, with solid polymerization, obtains excellent silk-forming property by uniformly distributing the molecular weight of molten raw-material bodies and bettering the flowability. The equipment of the present invention adopts a common spinning fiber production line, wherein the back part of a material feed hopper has a solid polymerizer, the front and rear parts of which respectively have a material inlet screw and a material outlet screw for controlling the amount of feeding and discharging material. The method of the present invention can be easily implemented; the object of producing sub-linear fiber with raw material of injection-grade resin can be realized just by slightly modifying a common spinning production line and controlling the polymerization temperature and pressure in production. The method solves the fiber production vacancy of the prior art and expands the raw material source for polyphenylene sulfide fiber production, and therefore being an ideal method for production of sub-linear polyphenylene sulfide fiber.

Description

technical field [0001] The invention belongs to the research and development field of manufacturing technology and equipment of sub-linear polyphenylene sulfide fiber. Background technique [0002] Polyphenylene sulfide fiber is made of polyphenylene sulfide resin. According to the molecular structure, polyphenylene sulfide resin is divided into high linearity and low linearity, which are called fiber grade and injection molding grade in the market. Generally, fiber grade polyphenylene sulfide resin can be used to produce polyphenylene sulfide fiber, while injection molding grade polyphenylene sulfide resin can only be used for plastic injection molding, and cannot produce polyphenylene sulfide fiber. Because the molecular weight distribution of injection-grade polyphenylene sulfide resin melt is uneven, the fluidity is not good and unstable, so it is not easy to form filaments. Therefore injection molding grade resins are not capable of producing fibers. Due to the differ...

Claims

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Application Information

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IPC IPC(8): D01F6/76D01D5/00C08G75/02C08G75/0204
Inventor 孙亮李秀卿王姗姗孙德东
Owner 孙亮
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