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Synthesis process for polyphenylene sulfide resin

A polyphenylene sulfide resin and a synthesis process technology are applied in the field of polymer material resin synthesis to achieve the effects of shortening synthesis time, improving production efficiency and increasing reaction speed

Inactive Publication Date: 2012-01-25
SHENZHEN POLYTECH SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As far as the existing polyphenylene sulfide synthesis technology is concerned, the synthesis of polyphenylene sulfide resin generally uses sodium sulfide and p-dichlorobenzene (P-DCB) as raw materials, although the American Phillips company and Japanese polyphenylene sulfide resin The polyphenylene sulfide resin produced by the production company has basically not changed much in raw materials, so that the polyphenylene sulfide resin can achieve the purpose of low chlorine by adding auxiliary materials, but it has not been mixed with other Na 2 CO 3 and sodium hydrosulfide specific process introduction

Method used

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  • Synthesis process for polyphenylene sulfide resin
  • Synthesis process for polyphenylene sulfide resin

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 1) Under the condition of online infrared monitoring system control and nitrogen protection, in the sodium sulfide dehydration treatment stage, 100mol sodium sulfide pentahydrate crystals were added to a 316L stainless steel reactor, under the condition of nitrogen protection with a purity of 99.995% v / v, and Heating to 120°C to fully dissolve the sodium sulfide, and then input the sodium sulfide solution into the pipeline filter with a heat preservation temperature of 120°C for the treatment of mechanical impurities. The filter element of the filter element is a pure titanium metal filter with a pore size of 0.01 um, the flow rate is 60m 3 / h, and then the sodium sulfide solution treated by the pipeline filter is input into the next stage 316L stainless steel reactor for use.

[0028] 2) Under the condition of online infrared monitoring system control and nitrogen protection, add the sodium sulfide aqueous solution obtained in 1) under the condition of nitrogen protecti...

Embodiment 2

[0036] 1) Under the condition of online infrared monitoring system control and nitrogen protection, in the sodium sulfide dehydration treatment stage, 100mol sodium sulfide pentahydrate crystals were added to a 316L stainless steel reactor, under the condition of nitrogen protection with a purity of 99.995% v / v, and Heating to 130°C to fully dissolve the sodium sulfide, and then input the solution into a pipeline filter with a heat preservation temperature of 130°C for processing of mechanical impurities. The filter element of the filter is a pure titanium metal filter with a pore size of 0.01um. The flow rate is 40m 3 / h, and then the sodium sulfide treated by the pipeline filter is the solution input to the next stage 316L stainless steel reactor.

[0037] 2) Under the condition of online infrared monitoring system control and nitrogen protection, add the sodium sulfide aqueous solution obtained in 1) under the condition of nitrogen protection, add 10% mol of 13mol NaOH in t...

Embodiment 3

[0045] 1) Under the condition of online infrared monitoring system control and nitrogen protection, in the sodium sulfide dehydration treatment stage, 100mol sodium sulfide pentahydrate crystals were added to a 316L stainless steel reactor, under the condition of nitrogen protection with a purity of 99.995% v / v, and Heating to 125°C to fully dissolve the sodium sulfide, and then input the solution into a pipeline filter with a heat preservation temperature of 125°C for processing of mechanical impurities. The filter element of the filter is a pure titanium metal filter with a pore size of 0.01um. The flow rate is 50m 3 / h, and then the sodium sulfide treated by the pipeline filter is the solution input to the next stage 316L stainless steel reactor.

[0046] 2) Under the condition of online infrared monitoring system control and nitrogen protection, add the sodium sulfide aqueous solution obtained in 1) under the condition of nitrogen protection, add 10% mol of 12mol NaOH in t...

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Abstract

The invention discloses a synthesis process for a polyphenylene sulfide resin. In the synthesis process, sodium sulfide and paradichlorobenzene are used as raw materials, N-methyl-2pyrrolidone is used as a solvent, and the molar ratio of the sodium sulfide to the paradichlorobenzene is 1:1; under the conditions that an online infrared monitoring system is used for control and nitrogen is used forprotection, in a sodium sulfide dehydration treatment stage, 10%mol of NaOh and 50%mol of Na2CO3 relative to a prescription are added for chemically treating the sodium sulfide; and in a condensationstage, 50%mol of Na2CO3 and NaHs relative to the prescription are added for further performing molecular weight and molecular weight distribution ratio regulation on the synthesized polyphenylene sulfide resin and regulating the content of covalent chlorine to be 200-300ppm. According to the invention, halogens in an obtained product are lower in total content and a polydispersity index, and the obtained product has the advantages of narrow molecular weight distribution, high oxygen index and excellent electric insulating property, and can be used as a packaging material for electronic devices.

Description

technical field [0001] The invention belongs to the synthesis of polymer material resin, especially the field of polyphenylene sulfide resin production. Background technique [0002] High-performance polyphenylene sulfide has excellent chemical resistance and thermal stability at high temperatures, and has flame retardancy, insulation, radiation resistance and good mechanical properties. In order to explore the synthesis method of this material, researchers from all over the world have been working hard to find it. [0003] In U.S. Patent NO: 4761468, it is described to use chemical substances such as mercapto and mercapto metal salts to treat polyphenylene sulfide resin after polyphenylene sulfide resin is synthesized, thereby reducing the content of chlorine in polyphenylene sulfide resin. Later, polyphenylene sulfide resin is applied to the field of electronic components through modification, and its main purpose is to improve the insulation performance of polyphenylene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/02C08G75/0254
Inventor 刘敬懿王文王劲松
Owner SHENZHEN POLYTECH SCI & TECH
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