Process for synthesizing low-chlorine 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 improving reaction speed, saving costs and shortening synthesis time.
CN101935397BActive Publication Date: 2012-01-11四川得阳特种新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
四川得阳特种新材料有限公司
Publication Date
2012-01-11

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Abstract

The invention discloses a process for synthesizing low-chlorine polyphenylene sulfide resin. Sodium sulfide and paradichlorobenzene are used as raw materials, N-methyl-2-pyrrolidone is used as a solvent, and the molar ratio of the sodium sulfide to the paradichlorobenzene is 1:1. The synthesis process mainly comprises the following steps of: in a sodium sulfide dehydration treatment phase, carrying out sodium sulfide solution insulating and water sucking treatment by adopting three layers of 18cm water sucking column containing a 5 angstrom molecular sieve in each layer to form a sodium sulfide solution with the water content of 1.2-1.5mol / molNa2S and adding NaOH with the molar mass of 0.1-0.3mol / molNa2S; and in the polycondensation phase, adding Na2SO4 of 0.1-0.05mol / molNa2S and H2S gas of 0.01mol / molNa2S. The invention has lower halogen total content and polydispersion coefficient in the obtained product, narrow molecular weight distribution, high oxygen index and excellent electrical insulating property and can be used as a packaging material of an electronic device.
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Description

Technical field

[0001] The invention belongs to the field of polymer material resin synthesis, especially polyphenylene sulfide resin production. Background technique

[0002] High-performance polyphenylene sulfide has excellent chemical resistance and thermal stability at high temperatures, and has flame retardant, insulation, radiation resistance and good mechanical properties. In order to explore the synthesis method of this material, researchers from various countries have been constantly seeking for it.

[0003] U.S. Patent No: 4761468 describes the use of chemical substances such as mercapto and mercapto metal salts to treat polyphenylene sulfide resin after synthesis of polyphenylene sulfide resin, thereby reducing the content of chlorine in polyphenylene sulfide resin. Later, polyphenylene sulfide resin was applied to the field of electronic components through modification, and its main purpose was to improve the insulation performance of polyphenylene sulfide materials. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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