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Polyphenylene sulfide/polyphenylene sulfide sulphone copolymer and preparation method thereof

A technology of polyphenylene sulfide sulfone and polyphenylene sulfide, which is applied in the field of polyphenylene sulfide/polyphenylene sulfone sulfone copolymer and its preparation, can solve the problem of high catalyst selectivity, high comprehensive production cost, variety and The amount of influence is large, and the effect of good use temperature and mechanical properties, balance of use temperature and mechanical properties, and good compatibility is achieved.

Inactive Publication Date: 2015-01-21
黄孟良 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method has high requirements on process control and catalyst selectivity, the type and amount of catalyst have a great influence on the final product, and the overall production cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of polyphenylene sulfide / polyphenylene sulfide sulfone copolymer is prepared by the following method:

[0040] (1) Under the protection of nitrogen, add 10mol of p-chlorobiphenyl and 8mol of sodium sulfide into 500ml of solvent, stir well, add 0.05mol of prepolymerization catalyst, and react at 180°C for 6 hours to obtain a prepolymer;

[0041] (2) Divide the prepolymer in step (1) into two parts, add 1mol branching agent to one part of the prepolymer, heat up to 200°C, stir under nitrogen atmosphere, and react for 3 hours;

[0042] (3) Add 2 mol of oxidant and 0.03 mol of oxidation catalyst to the other prepolymer, use an ice-water mixture water bath, keep the reaction temperature at 0°C, stir rapidly, make the gas phase raw materials and liquid phase raw materials fully contact, and react for 10 hours;

[0043] (4) Add the reaction product obtained in step (2) and step (3) into the reactor at a weight ratio of 1:6, mix well, add 0.2mol of copolymerization catal...

Embodiment 2

[0047] A kind of polyphenylene sulfide / polyphenylene sulfide sulfone copolymer is prepared by the following method:

[0048] (1) Under the protection of nitrogen, add 10mol p-chlorobiphenyl and 15mol sodium sulfide into 1000ml solvent, stir evenly, add 0.5mol prepolymerization catalyst, and react at 200°C for 8 hours to obtain a prepolymer;

[0049] (2) Divide the prepolymer in step (1) into two parts, add 5mol branching agent to one part of the prepolymer, heat up to 220°C, stir under nitrogen atmosphere, and react for 4 hours;

[0050] (3) Add 4 mol of oxidant and 0.2 mol of oxidation catalyst to another part of the prepolymer, use ice-water mixture water bath, keep the reaction temperature at 0°C, stir rapidly, make the gas phase raw materials and liquid phase raw materials fully contact, and react for 11 hours;

[0051] (4) Put the reaction product obtained in step (2) and step (3) into the reactor at a weight ratio of 1: 10, mix well, add 0.8mol of copolymerization cataly...

Embodiment 3

[0055] A kind of polyphenylene sulfide / polyphenylene sulfide sulfone copolymer is prepared by the following method:

[0056] (1) Under the protection of nitrogen, add 10mol p-chlorobiphenyl and 12mol sodium sulfide into 800ml solvent, stir evenly, add 0.2mol prepolymerization catalyst, and react at 190°C for 7 hours to obtain a prepolymer;

[0057] (2) Divide the prepolymer in step (1) into two parts, add 3mol branching agent to one part of the prepolymer, heat up to 210°C, stir under nitrogen atmosphere, and react for 3 hours;

[0058] (3) Add 3 mol of oxidant and 0.1 mol of oxidation catalyst to another prepolymer, use ice-water mixture water bath, keep the reaction temperature at 0°C, stir rapidly, make the gas phase raw materials and liquid phase raw materials fully contact, and react for 10 hours;

[0059] (4) Add the reaction product obtained in step (2) and step (3) into the reactor at a weight ratio of 1:8, mix well, add 0.6mol of copolymerization catalyst, heat up to ...

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PUM

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Abstract

The invention belongs to the field of synthesizing a high-polymer material, and particularly relates to a polyphenylene sulfide / polyphenylene sulfide sulphone copolymer and a preparation method thereof. The polyphenylene sulfide / polyphenylene sulfide sulphone copolymer is prepared from 10mol of p-dichlorobenzene, 2-4mol of an oxidizing agent, 8-15mol of sodium sulfide, 0.05-0.5 mol of a polymerization catalyst, 0.03-0.2mol of an oxidation catalyst, 0.2-0.8mol of a copolymerization catalyst, 1-5mol of a branching agent, and 500-1000mol of a solvent. The high-quality polyphenylene sulfide / polyphenylene sulfide sulphone copolymer is prepared by oxidizing a polyphenylene sulfide prepolymer and then performing copolymerization reaction between a polyphenylene sulfide sulphone prepolymer prepared through oxidization and the branched polyphenylene sulfide.

Description

technical field [0001] The invention belongs to the field of polymer material synthesis, and in particular relates to a polyphenylene sulfide / polyphenylene sulfone sulfone copolymer and a preparation method thereof. Background technique [0002] Polyphenylene sulfide sulfone is a new type of special engineering plastic and a structurally modified variety of polyphenylene sulfide. PPS has inherited many excellent properties of PPS, such as electrical properties, mechanical properties, dimensional stability, chemical resistance, flame retardancy, etc. Due to the strong polar sulfone group (-SO2-) in the molecular structure of polyphenylene sulfide sulfone, under the joint action of its aromatic ring and sulfur, polyphenylene sulfide sulfone is a non-crystalline polymer with a glass transition temperature of Higher than polyphenylene sulfide, reaching 215°C. Therefore, the disadvantages of poor toughness, high brittleness and insufficient glass transition temperature of polyp...

Claims

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Application Information

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IPC IPC(8): C08G75/23C08G75/02C08G75/0209C08G75/0254
Inventor 黄孟良陈俊
Owner 黄孟良
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