Preparation method of polyphenylene sulfide sulphone ketone with high molecular weight

Abstract

The invention discloses a preparation method of polyphenylene sulfide sulphone ketone with high molecular weight. The polyphenylene sulfide sulphone ketone comprises raw materials of sodium sulfide, 4,4'-dichlorodiphenyl sulfone and 4,4'-dichlorobenzophenone, a solvent of N-methylpyrrolidinone, and additives of sodium hydroxide, a catalyst and sodium benzoate. The preparation method is mainly characterized by comprising the following steps of enabling the raw materials, the solvent, the additives and the catalyst to be subjected to a polyreaction for the first time so as to obtain a prepolymer; performing a polyreaction for the second time so as to obtain a polymer solution, wherein the polyreaction temperature of the raw materials, the solvent, the additives and the catalyst is 170-270 DEG C, the pressure condition is 0MPa-1MPa, and the required time is 3-8h; and after the polymer solution stops the reaction, reducing the temperature, performing sedimentation, performing separation, performing crushing, performing washing, and performing drying so as to obtain a macromolecule material. The resin synthesized by the preparation method disclosed by the invention is good in stability, the high temperature resistance and the corrosion resistance of the resin are improved, mechanical properties are improved, and the cost is moderate.

Description

technical field [0001] The invention relates to the technical field of polymer resin synthesis, in particular to a method for manufacturing high molecular weight polyphenylene sulfide sulfone ketone. Background technique [0002] At present, the production capacity of domestic PPS resin is gradually expanding. However, this still cannot meet the strong demand for high-molecular-weight PPS resin in the domestic market, and a considerable part of consumption depends on imported products. The main reasons are analyzed. First, the domestically produced PPS resin In terms of purity and molecular weight, it has not yet reached the relevant international standards, which limits the application range of domestic products. High-end fields still need to purchase high-purity and high-molecular-weight resins from abroad; second, there are some problems in the production technology of PPS resin synthesis, such as raw materials Difficulties in refining, unstable dehydration process and pr...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a manufacturing method of high-molecular-weight polyphenylene sulfide sulfone ketone, which solves the problems and shortcomings of the above-mentioned resins, such as low molecular weight, poor color, and insufficient mechanical properties. Sub-filling, atmospheric pressure drop and high-pressure polymerization methods to synthesize high-quality resin

Images