High fluidity polysulfone ketone resin and its production process

Abstract

The invention discloses high-liquidity polysulfone ketone resin and a production process. An aromatic ketone monomer is introduced into a PSU polymer; especially a heterogeneous aromatic ketone monomer is copolymerized; the aromatic ketone monomer accounts for 10%-25% of total mole of an aromatic sulphone monomer; a main molecular chain of the prepared polysulfone ketone resin contains a polysulfone and polyaryletherketone random copolymer structure. The melting point of the prepared product is 305-340 DEG C; the processing and molding temperature is not higher than 350 DEG C in general; the melt index is 10.0-30 g / 10min; and the high-liquidity polysulfone ketone resin has the advantages of being relatively high in liquidity and easy to process, and can be widely applied to various thin-wall products.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-fluidity polysulfone ketone resin and a production process thereof. Background technique [0002] Polysulfone 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 and flame retardancy, 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 polysulfones include bisphenol A polysulfone (PSU) and biphenyl polyethersulfone (PPSU), both of which have high glass transition temperatures. In the process of use, because polysulfone has a high melt viscosity, it is not easy to form products with complex structures, and there will b...

AI Technical Summary

Problems solved by technology

Chinese patent document CN102757561A discloses a ketone-containing polyethersulfone resin, the molar ratio of sulfone-containing monomers to ketone-containing monomers is 9:1-1:1, which uses sulfolane as a solvent and toluene as a water-separating agent , potassium hydroxide solution is a salt-forming agent, and its industrial production method is not disclosed

When the proportion of ketone-containing monomers is greater than 30% of the sum of sulfone-based monomers and ketone-based monomers, the polymerization reaction will be more difficult, and the cycle of polymerization production will be longer, which will cause the problem of high color and melting point of the product, especially When the proportion of the ketone-containing monomer is greater than 40% of the sum of the sulfone-based monomer and the ketone-based monomer, the polymerization reaction hardly occurs at a temperature lower than 240°C

When the ratio of the ketone-containing monomer is greater than 25% of the sum of the sulfone-based monomer and the ketone-based monomer, the Tm of the resulting random copolymer is greater than 350°C, and the processing temperature of the resulting product will also reach 380°C or higher , resulting in difficult processing and difficult to be widely used

In addition, when the proportion of ketone-containing monomers is too high, the transparency of the product will also decrease to a certain extent.

It is a very difficult challenge to develop polysulfoneketone with high fluidity, easy processing, chemical solvent resistance and radiation performance

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