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Preparation method of high-performance polyphenylene derivative films with benzimidazole linkage points

A technology of polyphenylene derivatives and benzimidazole, which is applied in the field of preparation of high-performance polyphenylene derivative films, can solve the problems of poor solubility, low molecular weight of polyphenylene derivatives, and lack of flexibility.

Active Publication Date: 2019-04-02
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to poor solubility, generally the synthesized polyphenylene derivatives (polybenzoylbenzene) have low molecular weight, poor film-forming properties, brittle films, no flexibility, and very poor mechanical properties.

Method used

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  • Preparation method of high-performance polyphenylene derivative films with benzimidazole linkage points
  • Preparation method of high-performance polyphenylene derivative films with benzimidazole linkage points
  • Preparation method of high-performance polyphenylene derivative films with benzimidazole linkage points

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Experimental program
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Effect test

Embodiment approach 1

[0075] Embodiment 1: Embodiment 1 of the present invention provides a kind of preparation method of the high-performance polyphenylene derivative film with benzimidazole linkage point, it is characterized in that, at least comprises the following steps:

[0076] (1) dissolving phthalic acid-terminated substituted benzene oligomers and aromatic tetramines in a solvent to form a mixed solution;

[0077] (2) Add film-forming agent in the mixed solution, and form a film through casting;

[0078] (3) drying the film formed in step (2), and then heat-treating to obtain a high-performance polyphenylene derivative film with benzimidazole link points.

Embodiment approach 2

[0079] Embodiment 2: Embodiment 2 of the present invention is the same as Embodiment 1, except that the general structural formula of the phthalic acid-terminated substituted benzene oligomer is:

[0080]

[0081] where R 1 Choose from the following structures:

[0082] CH 3 O-, any of the.

Embodiment approach 3

[0083] Embodiment 3: Embodiment 3 of the present invention is the same as Embodiment 1, the difference is that the general structural formula of the aromatic tetramine is:

[0084]

[0085] where R 2 Choose from the following structures:

[0086] any of the.

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Abstract

The invention relates to a method for preparing a polyphenylene derivative film, and specifically discloses a method for preparing a high-performance polyphenylene derivative film with benzimidazole link points, which at least includes the following steps: (1) adding phthalic acid The end-capped substituted benzene oligomer and aromatic tetramine are dissolved in a solvent to form a mixed solution; (2) adding a film-forming agent to the mixed solution to form a film by casting; (3) drying the film formed in step (2) , and then heat-treated to obtain a high-performance polyphenylene derivative film with benzimidazole link points.

Description

technical field [0001] The invention relates to a preparation method of a polyphenylene derivative film, more specifically, the invention relates to a preparation method of a high-performance polyphenylene derivative film with benzimidazole link points. Background technique [0002] Polyphenylene is a kind of rigid chain polymer linked by phenyl groups. It has excellent high temperature resistance. The thermal decomposition temperature in nitrogen is as high as 900 ° C. It can be used for a long time at 400 ° C. It has excellent chemical corrosion resistance and friction resistance. , radiation resistance and other characteristics; at the same time, it has good electrical properties and self-lubricating properties, and the self-lubricating properties are better than MoS 2 , even graphite. Polyphenylene can be used as high temperature-resistant, radiation-resistant coatings or adhesives, high-temperature wear-resistant parts, ablation-resistant materials, etc., and can be us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08G73/10C08L79/08
CPCC08G73/1067C08J5/18C08J2379/08
Inventor 侯豪情许文慧李永红朱咏梅
Owner JIANGXI NORMAL UNIV