Industrial synthesis method and application of high-fluidity polyether ether ketone resin

Abstract

The invention discloses an industrial synthesis method of high-fluidity polyether ether ketone resin. The industrial synthesis method comprises the following steps: in a reaction vessel, adding diphenyl sulfone, 4,4'-difluorobenzophenone and an alkali metal salt forming agent, starting stirring, heating until the monomer is completely dissolved, adding hydroquinone into the system, further uniformly stirring, heating, carrying out polymerization reaction, finally adding an end-capping reagent and further reacting to obtain a polymeric viscous liquid; cooling the polymeric viscous liquid with water, pulverizing into powder and filtering the powder, boiling the filtered powder with an organic solvent and deionized water, repeatedly washing and filtering to remove the solvent and by-product salt and drying to obtain polyether ether ketone resin, wherein the end-capping reagent is selected from one or more of 3,4'-difluorobenzophenone, 3-chloro-4-fluorobenzophenone, 3-fluoro-4-chlorobenzophenone and 3,4'-dichlorobenzophenone. The polyether ether ketone resin prepared by the industrial synthesis method has the advantages of low chroma, low melt viscosity, high fluidity and easiness in mold processing and can be used for preparation of heat-resistant and anti-corrosion coating and injection molded parts.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an industrial synthesis method and application of high fluidity polyetheretherketone resin. Background technique [0002] Polyether ether ketone is a high-performance engineering plastics, due to its heat resistance, hot water resistance, abrasion resistance, fatigue resistance, radiation resistance, peel resistance, creep resistance, dimensional stability, Impact, chemical resistance, non-toxic, flame retardant and other excellent comprehensive properties, so it has been widely used in the fields of electronics, electrical appliances, machinery, automobiles, medical appliances, aviation industry, food processing and non-stick coatings for a long time. [0003] Since the advent of water-based coatings in the early 1960s, a variety of new varieties of non-pollution, resource-saving, and energy-saving coatings have been developed successively. Among them, the ...

AI Technical Summary

Problems solved by technology

In order to obtain polyether ether ketone with low melt viscosity, Chinese patent CN 2014102190250 obtains polyether ether ketone with low melt viscosity by changing the sequence of molecular chains without changing the ratio of phenyl, ether bond and ketone group, but this This method increases the raw materials of the product, increases the cost, and the process is uncontrollable; there is also US Patent US 4920200, which utilizes ring-opening polymerization of aromatic ring oligomers to prepare polymers, and this method is also applicable to the preparation of polyether ethers with low melt viscosity Ketones, but this method introduces impurities and is expensive and not feasible

[0006] In summary, the existing production methods for preparing polyether ether ketone with high fluidity and low melt viscosity have certain defects, and the existence of these defects directly restricts the use and processing of polyether ether ketone coatings.

Images