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A kind of flash evaporation equipment and spinning method of polyphenylene sulfide

A technology of flash spinning and polyphenylene sulfide, applied in the field of non-woven fabrics, can solve the problems of single variety and low output.

Active Publication Date: 2020-12-01
XIAMEN DANGSHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 21st century, there have been many units engaged in the research and development of PPS composite materials in China, but they are still in a state of low output and a single variety. Most of them are general-purpose varieties-glass fiber reinforced materials and inorganic-filled modified varieties.

Method used

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  • A kind of flash evaporation equipment and spinning method of polyphenylene sulfide
  • A kind of flash evaporation equipment and spinning method of polyphenylene sulfide
  • A kind of flash evaporation equipment and spinning method of polyphenylene sulfide

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Embodiment 1

[0023] Such as figure 2 As shown, the present invention discloses a flash spinning equipment for polyphenylene sulfide, including a box body 1, a spinneret 2, a high-pressure reactor 3, and a conveying device 4, and the box body 1 is provided with a spinning The stock solution inlet 11, the spinneret 2 is arranged inside the casing 1, the bottom end of the autoclave 3 is connected with the spinneret 2 through the spinning stock solution inlet 11, and the conveying device 4 is provided At the bottom of the box 1, it also includes a regulating valve 5 for regulating the flow rate of the spinning stock solution and an interceptor 6 for filtering and intercepting impurities, and the regulating valve 5 and the interceptor 6 are sequentially arranged on the spinning Head 2 above.

Embodiment 2

[0025] The invention discloses a flash spinning method of polyphenylene sulfide, comprising the following steps:

[0026] Step 1. Preparation of spinning stock solution: adding polyphenylene sulfide and spinning solvent carbon tetrachloride into a high-pressure reactor, fully mixing at a temperature of 250° C. and a pressure of 5 kPa to prepare a spinning stock solution; the high-pressure In the reaction kettle, the stirring speed of the agitator is 80rpm, and the mixing time is 2h. The solid-liquid ratio of polyphenylene sulfide and spinning solvent is 1:40 g / mL.

[0027] Step 2, preparation of polyphenylene sulfide fiber by flash method: the spinning stock solution is ejected from the spinneret of the flash spinning equipment, and the spinning stock solution is ejected from the spinneret of the flash spinning equipment at an air velocity 5000m / min; the solvent of the spinning dope evaporates instantly, the polymer of the spinning dope cools and solidifies rapidly, forming f...

Embodiment 3

[0029] A kind of flash spinning method of polyphenylene sulfide, comprises the following steps:

[0030] Step 1. Preparation of spinning dope: Add polyphenylene sulfide and spinning solvent ethyl chloride to a high-pressure reaction kettle, and fully mix them at a temperature of 300°C and a pressure of 15kPa to prepare a spinning dope; the high-pressure reaction In the kettle, the stirring speed of the agitator is 100rpm, and the mixing time is 5h. The solid-liquid ratio of polyphenylene sulfide and spinning solvent is 10:30 g / mL.

[0031] Step 2, preparation of polyphenylene sulfide fiber by flash method: the spinning stock solution is ejected from the spinneret of the flash spinning equipment, and the spinning stock solution is ejected from the spinneret of the flash spinning equipment at an air velocity 7000m / min; the solvent of the spinning dope evaporates instantly, the polymer in the spinning dope cools and solidifies rapidly, forming fiber bundles, which directly settl...

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Abstract

The invention discloses PPS (polyphenylene sulfide) flashing equipment. The equipment comprises a box, a spinning nozzle, a high-pressure reactor and a conveying device, wherein a spinning solution inlet is formed in the box, the spinning nozzle is arranged in the box, the bottom end of the high-pressure reactor is connected with the spinning nozzle through the spinning solution, and the conveyingdevice is arranged at the bottom of the box. The equipment also comprises an adjusting valve and an interceptor which are sequentially arranged above the spinning nozzle. Besides, the invention discloses a flash spinning method of PPS. A PPS polymer and a flash spinning process are combined for the first time to produce PPS flashed non-woven fabric, and fine-fiber and high-strength PPS non-wovenfabric is formed.

Description

technical field [0001] The invention relates to the technical field of nonwoven fabrics, in particular to a polyphenylene sulfide flashing device and a spinning method thereof. Background technique [0002] Polyphenylene sulfide, referred to as PPS, is a new type of high-performance thermoplastic resin. First of all, it has excellent heat resistance. Its polymer melting point is 285°C. It has been certified by UL in the United States for continuous use at 200-240°C. 260°C; secondly, its flame retardancy is good: without adding flame retardants, the oxygen index value is 34-35, and it is 0 level / 5V in the UL94 combustion test, which is the highest level; again, the material has the same characteristics as polytetrafluoroethylene Excellent chemical resistance comparable to that of PTFE, and no solvent that can dissolve PPS below 200°C has been found; in addition, it has excellent characteristics such as good insulation, high strength, high rigidity, good dimensional stability,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D5/11D04H3/005
CPCD01D5/11D01D13/00D04H3/005
Inventor 朱慧飞罗章生袁新红
Owner XIAMEN DANGSHENG NEW MATERIAL CO LTD
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