Method for producing polyphenylene sulfide film

Abstract

The invention discloses a method for producring a polyphenylene sulfide film. Sodium sulfide and p-dichlorobenzene are used as raw materials, N-methyl-2-pyrrolidone is used as a solvent, 1,3,5-trichlorobenzene and 2,4,6-trichlorobenzene molecular weight regulators are added to control the molecular weight distribution coefficient of polycondensation synthesized polyphenylene sulfide resin, an antioxidant is added to the synthetic polyphenylene sulfide resin, all above materials are mixed according to a certain ratio to form a raw material for the polyphenylene sulfide film, the material is extruded by a twin-screw extruder, goes through a T-shaped mold, and is biaxially drawn into the polyphenylene sulfide film, and the polyphenylene sulfide film undergoes corona and anti-adhesion agent treatment, and then is wound into a polyphenylene sulfide film roll. The film obtained in the invention can be widely used in the fields of electronic appliances, military industry, aerospace, machinery, chemical industry and the like.

Description

technical field [0001] The invention belongs to the field of polymer film manufacture, and in particular relates to a method for manufacturing a polyphenylene sulfide film. 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 resistance to deionization and hydrolysis. It is a new material with very low moisture absorption and deionized water absorption. [0003] In recent years, electrical insulation materials for motors, capacitors, and lithium-ion batteries have gradually required properties such as heat resistance at high temperatures, deionization and hydrolysis resistance, low moisture absorption, high electrical insulation, and chemical corrosion resistance. Electric insul...

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Problems solved by technology

[0006] However, the toughness and low tensile tear elongation of polyphenylene sulfide film limit its application range, but in order to improve the above properties, it is necessary to add some other compatible additives, such as distyrol and ethylene copolymer elasticity body series etc.

[0007] In the patent application 200580038776.1, a method of manufacturing polyphenylene sulfide film is introduced. It uses polyamide resin ultrafine particles to be mixed in a certain proportion, and obtains polyphenylene sulfide film through a biaxial orientation manufacturing method. However, The toughness and tear elongation of the polyphenylene sulfide film manufactured by this method have not been fundamentally resolved.

[0008] In the patent application 200880015409.3, a method of manufacturing polyphenylene sulfide film is introduced. This invention provides a biaxially oriented film formed only of polyarylene sulfide resin with excellent tear elongation and planarity. The tear elongation in the length or width direction of the biaxially oriented polyarylene sulfide film is 110% or more, and the tear stress in the length or width direction is 200 MPa or less. The thermal shrinkage rate is above 0% to below 10%. From this patent, it is found that according to the characteristics of polyphenylene sulfide resin, as well as the film production process and process conditions, it is too complicated

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