Fragrant heterocycle-containing polyphenylene sulfide copolymer, preparing method, uses and products thereof

Abstract

The invention discloses an aromatic heterocyclic polyphenylene sulfide copolymer and a preparation method, applications and products thereof. In the copolymer, -HAr-S- structure is embedded into -Ar-S molecular structure to form -Ar-S-HAr-S- structure; the preparation method thereof is that sodium sulfide, paradichlorobenzene and 2-(4-chloro-phenyl)-5-chloro-benzimadazole are taken as raw materials, N-methyl-2-pyrrolidone is taken as a solvent, condensation polymerization synthesis is carried out under the function of alkali metal assistant solvent to blend with polyphenylene sulfide so as to prepare various injection molding or plastic extruding products. The aromatic heterocyclic polyphenylene sulfide copolymer is particularly applicable to prepare membranes and fiber and can improve tenacity and intensity.

Description

technical field

[0001] The invention relates to polyphenylene sulfide, in particular to a polyphenylene sulfide copolymer containing an aromatic heterocycle and its preparation method, application and product. Background technique

[0002] With the advancement of science and technology and the development of society, people are developing and applying new technologies and materials more and more widely, and the requirements for electronic and electrical insulation materials are getting higher and higher, especially those with high temperature resistance and hydrolysis resistance. electrical insulating material.

[0003] Polyphenylene sulfide has excellent chemical corrosion resistance and thermal stability at high temperature, very low water absorption and moisture absorption, and has good flame retardancy, insulation and radiation resistance.

[0004] However, products made solely of this material have poor toughness and strength and are prone to brittle cracks. Especially...