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High-temperature-resistant polyarylene sulfide-based copolymer and preparation method thereof

A polyarylene sulfide and copolymer-like technology, applied in the field of polymer synthesis, can solve the problems of low glass transition temperature and melting point, high cost, complex synthesis process, etc., and achieve the improvement of glass transition temperature or melting point, and the method is simple and easy , The effect of short process cycle

Active Publication Date: 2017-09-15
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently synthesized PPS resin has a glass transition temperature of 88-92°C and a melting point of 280-285°C. Due to its relatively low glass transition temperature and melting point, it is limited in extremely high-temperature environments (such as: aerospace, electronics, etc.) industry, petrochemical and other fields) applications
Polyether ether ketone PEEK resin has a high glass transition temperature and melting point, which can generally meet the special requirements of aerospace and other fields, but its complex synthesis process and high cost limit its large-scale promotion and application in industrialization

Method used

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  • High-temperature-resistant polyarylene sulfide-based copolymer and preparation method thereof
  • High-temperature-resistant polyarylene sulfide-based copolymer and preparation method thereof
  • High-temperature-resistant polyarylene sulfide-based copolymer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Add 5.0g sodium phosphate, 20.0g caprolactam, 3.0g sodium hydroxide, 65.0g sodium sulfide, and 350g N-methyl-2-pyrrolidone (NMP) into the reaction kettle, heat to 200°C, dehydrate for 0.5h, and cool down Add 66.20 g of 1,4-dichlorobenzene and 9.90 g of 2,6-dichloroquinoline to 160°C, react at 180°C for 1 hour, then react at 200°C for 6 hours; after the reaction is completed, cool to room temperature and add deionized water Wash, filter, and vacuum-dry at 120°C for 12 hours to obtain a white resin with a yield of 89.8%, intrinsic viscosity: 0.283dL / g, glass transition temperature: 103.8°C, melting point: 258.2°C, and thermal decomposition temperature: 490.3°C. Its glass transition temperature increased by 14.4°C compared with pure PPS resin.

Embodiment 2

[0041]Add 10.0g sodium benzoate, 10.0g 6-aminocaproic acid, 8.0g sodium hydroxide, 65.0g sodium sulfide, and 350g N-methyl-2-pyrrolidone (NMP) into the reaction kettle, heat to 200°C, and dehydrate 0.5h, after cooling down to 100°C, add 66.20g of 1,4-dichlorobenzene and 9.90g of 2,4-dichloroquinoline, react at 240°C for 4h, then react at 280°C for 1h. After the reaction, cool to room temperature, add deionized water to wash, filter, and vacuum-dry at 120°C for 12 hours to obtain a white resin, yield: 92.8%, intrinsic viscosity: 0.281dL / g, glass transition temperature: 103.2°C, melting point : 255.4°C, thermal decomposition temperature: 488.5°C. Its glass transition temperature increased by 13.8°C compared with pure PPS resin.

Embodiment 3

[0043] 10.0g lithium acetate, 10.0g polyethylene glycol-600, 8.0g potassium hydroxide, 65.0g sodium sulfide, 400g 1,3-dimethyl-2-imidazolidinone (DMI), were added to the reaction kettle, Heat to 200°C, dehydrate for 0.5h, cool down to 140°C, add 58.80g of 1,4-dichlorobenzene and 28.7g of 2,4-dibromoquinoline, react at 200°C for 4h, then react at 240°C for 2h. After the reaction, cool to room temperature, add deionized water to wash, filter, and vacuum dry at 120°C for 12 hours to obtain a white resin with a yield of 88.6%, intrinsic viscosity: 0.288dL / g, glass transition temperature: 113.2°C, melting point : 254.4°C, thermal decomposition temperature: 492.3°C. Its glass transition temperature increased by 23.8°C compared with pure PPS resin.

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Abstract

The invention relates to a class of aromatic hetero sulfur-containing high-temperature-resistant polyarylene sulfide-based copolymer and a preparation method thereof, and belongs to the field of polymer synthesis. The present invention provides a high-temperature-resistant polyarylene sulfide-based copolymer, which has a structural formula represented by a formula I defined in the specification, wherein m is more than or equal to 0 and is less than or equal to 100, n is more than 0 and is less than or equal to 100, and any one of the following structure formulas defined in the specification is selected.

Description

technical field [0001] The invention relates to a class of high-molecular-weight aromatic heterosulfur-containing high-temperature-resistant polyarylene sulfide copolymers and a preparation method thereof, belonging to the field of polymer synthesis. Background technique [0002] Polyarylene sulfide, such as polyphenylene sulfide (PPS), polyphenylene sulfide ketone (PPSK), polyphenylene sulfide sulfone (PPSF), etc., due to its high temperature resistance, chemical corrosion resistance, excellent electrical properties, radiation resistance, difficult Combustible, high mechanical strength, stable size and other characteristics, it has a wide range of applications in automobiles, aerospace, petrochemical, light industrial machinery, electronics, food and engineering technology. At this stage, the synthesis of polyphenylene sulfide has become more and more mature. For example, US 33544129 Philips has used sodium sulfide and dichlorobenzene as raw materials to synthesize high mol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/0254C08G75/0227
CPCC08G75/0227C08G75/0254
Inventor 杨杰任浩浩张刚严光明卢杰宏王孝军龙盛如
Owner SICHUAN UNIV
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