A kind of synthetic method of linear high molecular weight polyphenylene sulfide

A technology of polyphenylene sulfide and high molecular weight, applied in the field of chemical materials, can solve the problems of difficult purification of sulfur, high technical difficulty, and difficulty in industrialization, and achieve the effects of easy washing of metal ions, friendly operating environment, and easy separation
CN104744698BInactive Publication Date: 2017-05-24CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2017-05-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for synthesizing linear high molecular weight polyphenylene sulfide and belongs to the technical field of chemical material. The method comprises the following steps: by taking sodium sulphide and dichloro diphenyl as raw materials, synthesizing the linear high molecular weight polyphenylene sulfide (PPP) resin through a solution polycondensation method and a secondary polymerization process in a compound solvent and a cosolvent system. The method is simple in process and convenient to operate; the product has a high molecular weight linear structure; in the whole polymerization process, the molecular weight is controllable. Compared with the prior art, the method has the advantages of good solvent system dissolving property, low salt content and easy separation. The monomer reactivity of the linear polymerization reaction is high and the chain extension is easy to process. The dosage of the alkali metal or the alkaline earth chloride is few and the metal ion can be easily washed. The linear high molecular weight polyphenylene sulfide does not have irritant or carcinogenic property and is environmentally friendly to operate.
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Description

technical field

[0001] The invention belongs to the technical field of chemical materials, and in particular relates to a method of synthesizing linear high-molecular-weight polyphenylene by solution polycondensation method and secondary polymerization process using sodium sulfide and p-dichlorobenzene as raw materials, under the system of lye, composite solvent and auxiliary agent Thioether (PPS) resin method. Background technique

[0002] Polyphenylene sulfide (PPS) is a special engineering plastic with excellent comprehensive properties. It has excellent high temperature resistance, corrosion resistance, radiation resistance, flame retardancy, balanced physical and mechanical properties, excellent dimensional stability and excellent electrical properties. It is widely used as a structural polymer material, and can be used as a special engineering plastic after filling and modification. At the same time, it can also be made into various functional films, coatings and comp...

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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