Industrialized synthesis method of high-heat-stability blocked polyether sulfone resin

A polyarylethersulfone technology with high thermal stability, applied in the field of polymer materials, can solve the problems of high equipment cost, restricting the quality of polyarylethersulfone, and increasing recycling equipment, so as to reduce production costs, save procurement costs, and shorten the reaction time the effect of time
CN103626992AActive Publication Date: 2014-03-12JIANGMEN YOUJU NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGMEN YOUJU NEW MATERIALS
Publication Date
2014-03-12

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Abstract

The invention discloses an industrialized synthesis method of a high-heat-stability blocked polyether sulfone resin, which comprises the following steps: in a reaction kettle in a nitrogen protective atmosphere, adding a sulfolane solvent, heating to 60-80 DEG C while stirring, sequentially adding a water diversion agent, continuing heating to 200-210 DEG C while stirring, and carrying out salifying reaction for 1-2 hours; after the salifying reaction is finished, heating to 220-240 DEG C, carrying out constant-temperature polymerization reaction for 1-2 hours, adding a blocking agent, and continuing the reaction for 10-30 minutes to obtain a polymerization slurry; and cooling the polymerization slurry, pulverizing into powder, filtering, boiling and washing with deionized water to remove the solvent and byproduct salts, and drying to obtain the polyether sulfone resin. After adding the blocking agent, the polyether sulfone resin has favorable blocking effect, the system does not have the phenomenon of depolymerization, and the obtained blocked polyether sulfone resin has high heat stability; and the technique can greatly shorten the reaction time and enhance the productivity.
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Description

technical field

[0001] The invention belongs to the technical field of macromolecular materials, and in particular relates to an industrial synthesis method of high thermal stability end-blocked polyaryl ether sulfone resin. Background technique

[0002] Polyaryl ether sulfone is a kind of high-performance engineering plastics, because of their excellent comprehensive properties such as heat resistance, hot water resistance, creep resistance, dimensional stability, impact resistance, chemical resistance, non-toxicity, flame retardancy, etc. Therefore, it has been widely used in the fields of electronics, electrical appliances, machinery, automobiles, medical appliances, food processing and non-stick coatings for a long time.

[0003] Industrially important polyarylethersulfones include polyethersulfone (PES) and biphenyl polyethersulfone (PPSU), both of which have high glass transition temperatures (~220°C). Existing polyarylethersulfones have a production process using...

Claims

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