Method for producing polyphenylene sulfide film

A technology of polyphenylene sulfide film and manufacturing method, applied in the direction of coating, wax coating, etc., can solve the problem of low toughness and tensile tear elongation of polyphenylene sulfide film, complex film production process and process conditions, etc. Problems, achieve tear strength and tear elongation and other performance improvements, small crystallinity, use temperature and melting point increase

CN109957125AInactive Publication Date: 2019-07-02德阳科吉高新材料有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-07-02
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment 1

[0035] A kind of manufacture method of polyphenylene sulfide film, concrete steps are as follows:

[0036] Using sodium sulfide and p-dichlorobenzene as raw materials, N-methyl-2-pyrrolidone as solvent, sodium sulfide: p-dichlorobenzene: 1,3,5-trichlorobenzene: 2,4,6-trichlorobenzene The molar ratio is 1: 0.988: 0.006: 0.006, polyphenylene sulfide resin is synthesized by polycondensation under the condition of not adding any co-solvent, and the obtained resin is added to the purification treatment mixed solvent at 3% wt for purification treatment. The composition of the purification treatment mixed solvent is Deionized water 13%wt, NMP40%wt and methanol 47%wt, then add 0.025g of HCl10%wt deionized aqueous solution per 100g of polyphenylene sulfide resin, then the temperature rises to 240 ° C, keep warm for 0.8h, and then 13 Cool at a rate of ℃ / min, and when the temperature drops to 120°C, filter while it is hot to obtain polyphenylene sulfide resin, and repeat the above purifi...

Embodiment 2

[0039] Sodium sulfide and p-dichlorobenzene are used as raw materials, N-methyl-2-pyrrolidone is used as a solvent, polyphenylene sulfide resin is synthesized by polycondensation without adding any co-solvent, sodium sulfide: p-dichlorobenzene: 1,3, The molar ratio of 5-trichlorobenzene: 2,4,6-trichlorobenzene is 1: 0.994: 0.003: 0.003, and the obtained resin is added into the purification treatment mixed solvent with 6% wt for purification treatment, and the composition of the purification treatment mixed solvent is Deionized water 18%wt, NMP60%wt and methanol 22%wt, then add 0.05g of HCl10%wt deionized aqueous solution per 100g of polyphenylene sulfide resin, then the temperature rises to 260 ° C, keep warm for 0.5h, and then 16 Cool at a rate of ℃ / min, and when the temperature drops to 130°C, filter while it is hot to obtain polyphenylene sulfide resin, and repeat the above purification steps twice to obtain polyphenylene sulfide with a volatile content of less than 0.001%. ...

Embodiment 3

[0042] Sodium sulfide and p-dichlorobenzene are used as raw materials, N-methyl-2-pyrrolidone is used as a solvent, polyphenylene sulfide resin is synthesized by polycondensation without adding any co-solvent, sodium sulfide: p-dichlorobenzene: 1,3, The molar ratio of 5-trichlorobenzene: 2,4,6-trichlorobenzene is 1: 0.991: 0.004: 0.005, and the obtained resin is added into the purification treatment mixed solvent with 4% wt for purification treatment, and the composition of the purification treatment mixed solvent is Deionized water 16%wt, NMP48%wt and methanol 36%wt, then add 0.035g of HCl10%wt deionized aqueous solution per 100g of polyphenylene sulfide resin, then the temperature rises to 249 ° C, keep warm for 0.7h, and then 14 Cool at a rate of ℃ / min, and when the temperature drops to 129°C, filter while it is hot to obtain polyphenylene sulfide resin, and repeat the purification steps more than two times to obtain polyphenylene sulfide with a volatile content of less than...