Synthesis method of ternary copolymer containing PEDEK and PEEK using sulfolane as solvent

Abstract

The invention relates to a method for preparing polyetheretherketone and polyetheretherketone terpolymer by using sulfolane. It comprises following steps: the mole number of 4, 4'- difluoro diphenyl ketone is more than that of eldopaque and diphenol by 0.1-1%, the solid content in reaction system is 15-30%; filling dimethylbenzene with its mass being 10-20% of that of organic solvent, stirring, heating, adding mixed salt of alkali metal carbonate when monomer is totally dissolved and the temperature is between 75 to 85 Deg. C, reacting at constant temperature 230-260 Deg. C for 1-3 hours, stopping reaction, pouring product into cold water, cooling and disintegrating and filtering, boiling solid product with deionized water for several times, drying refined powder material in baking box, and getting said final product.

Description

technical field

[0001] The invention belongs to the field of macromolecular materials, and in particular relates to a method for preparing biphenyl-containing polyetheretherketone and polyetheretherketone terpolymer by using a polar solvent, especially sulfolane as a solvent. Background technique

[0002] Polyaryletherketone polymers have a series of excellent comprehensive properties such as high temperature resistance, high strength, and radiation resistance. Its earliest commercialized variety is the well-known polyether ether ketone (PEEK) resin that was first introduced to the market by the British ICl company in 1981. The patent of its preparation method clearly refers to the high-temperature solvent diphenyl sulfone. Because its polymer reaction temperature is above 300°C, other solvents cannot adapt. All of the patents on polyaryletherketone that were applied for later used this solvent. We have also used this traditional high-temperature solvent in the related pa...

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