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

A technology of polyphenylene sulfide and polyphenylene sulfide resin, which is used in flat products, other household appliances, and conjugated synthetic polymer rayon, etc. High, limited compatibility of polyphenylene sulfide, etc.

Inactive Publication Date: 2009-04-08
德阳科吉高新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength and toughness of these admixtures are not very high, and the compatibility with polyphenylene sulfide is also very limited, and the toughness and strength of the products are still not very high.
Especially when used as film and fiber, the toughness and tensile elongation at break are low, which cannot meet the requirements of use
For example, a Chinese patent discloses a manufacturing method of polyphenylene sulfide film (application number: 200580038776.1). However, the problems of toughness and elongation at break of the polyphenylene sulfide film manufactured by this method have not been fundamentally solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0069] In the autoclave, 120 kilograms of N-methyl-2 pyrrolidone (NMP) is a solvent, and sodium sulfide (Na 2 S.3H 2 (0) 42 kilograms, 0.1 kilogram of lithium aluminum hydride (auxiliary agent), under the pressure of 0.01Mpa nitrogen, while stirring, heat up, rise to 203 ℃ of dehydration with the time of 2 hours, add 24.9 kilograms of p-dichlorobenzene, NMP 20 kg, at a temperature of 200 ° C for 3 hours, then add 29.9 kg of 2-(4-chlorophenyl)-5-chlorobenzimidazole (abbreviated DCPBI), so that sodium sulfide and p-dichlorobenzene and 2- The molar ratio of (4-chlorophenyl)-5-chlorobenzimidazole is 1:0.6:0.4. When the temperature is 280°C, react for 4 hours, and under the condition of this temperature, add 0.36 kg of p-aminochlorobenzene, cool to 185°C after 2 hours of polymerization reaction, add 0.46 kg of terephthalic acid and heat up to 250°C for treatment After 1 hour, cool to 200°C, add 0.08 kg of deionizing agent mixture ethylenediaminetetraacetic acid, and keep stirring...

example 2

[0071] In the autoclave, add 60 kilograms of N-methyl-2 pyrrolidone (NMP), sodium sulfide (Na 2 S.3H 2 O) 21.5 kilograms, 0.05 kilograms of lithium aluminum hydride (auxiliary agent), under the pressure of 0.01Mpa nitrogen, while stirring, heat up, rise to 190 ℃ dehydration with the time of 8 hours, add 18.3 kilograms of p-dichlorobenzene, NMP 10 kg, at a temperature of 280 ° C for 1 hour, then add 3.75 kg of 2-(4-chlorophenyl)-5-chlorobenzimidazole, so that sodium sulfide and p-dichlorobenzene and 2-(4-chlorobenzene The molar ratio of (phenyl)-5-chlorobenzimidazole is 1:0.9:0.1. When the temperature is 280°C, react for 6 hours, and under the condition of this temperature, add 0.89 kg of p-aminochlorobenzene, cool to 185°C after 2 hours of polymerization, add 0.75 kg of terephthalic acid and heat up to 250°C for treatment After 1 hour, cool to 100°C, add 0.54 kg of deionizing agent mixture ethylenediaminetetraacetic acid, and keep stirring for 1 hour, filter at 100°C and coo...

example 3

[0073] In the autoclave, add 240 kilograms of N-methyl-2 pyrrolidone (NMP), sodium sulfide (Na 2 S.3H 2(O) 84 kilograms, 0.2 kilograms of lithium aluminum hydride (auxiliary agent), under the pressure of 0.01Mpa nitrogen, while stirring, heat up, rise to 203 ℃ dehydration with the time of 2 hours, add p-dichlorobenzene 49.8 kilograms, NMP 40 kg, at a temperature of 200 ° C for 3 hours, then add 59.8 kg of 2-(4-chlorophenyl)-5-chlorobenzimidazole, so that sodium sulfide and p-dichlorobenzene and 2-(4-chlorobenzene The molar ratio of (phenyl)-5-chlorobenzimidazole is 1:0.6:0.4. When the temperature is 280°C, react for 4 hours, and under the condition of this temperature, add 3.56 kg of p-aminochlorobenzene, cool to 185°C after polymerization for 2 hours, add 3.0 kg of terephthalic acid and heat up to 250°C for treatment After 1 hour, cool to 200°C and add 2.16 kg of deionizing agent mixture ethylenediaminetetraacetic acid, and keep stirring for 1 hour, cool to 100°C and filter...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/02C08L81/02C08K13/02D01F8/16D01F6/94B29C69/02B29C47/92B29C47/12B29C55/12H01B3/30B29L7/00B29C48/30B29C48/92C08G75/0213C08G75/0227C08G75/0254
Inventor 陈逊
Owner 德阳科吉高新材料有限责任公司
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