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Preparation method of high-temperature-resistant red polyimide film

A technology of polyimide film and high temperature resistance, which is applied in the field of preparation of high temperature resistant red polyimide film. Effect of coloring effect, reduction of thermal decomposition rate, and good heat resistance

Pending Publication Date: 2020-01-24
WUXI SHUNXUAN NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vast majority of organic reds are not resistant to high temperatures, and the highest temperature resistance is 250°C; although inorganic reds can withstand high temperatures, they are not environmentally friendly. At the same time, they have poor tinting strength in polyimide systems. Imide film color is not bright

Method used

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  • Preparation method of high-temperature-resistant red polyimide film
  • Preparation method of high-temperature-resistant red polyimide film

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The preparation method of the red polyimide film provided by the invention comprises the use of diketopyrrolopyrrole organic red pigment DPP red, the heat stabilizer is p-phenol, and the coupling agent is γ-aminopropyltriethoxysilane , the aromatic diamine monomer is 4,4'-diaminodiphenyl ether, the aromatic dianhydride is pyromellitic dianhydride, and the weight ratio of the organic red pigment in the polyamic acid is 0.6%. Phenol accounts for 5% of the organic red pigment, and γ-aminopropyltriethoxysilane accounts for 1% of the organic red pigment.

[0028] Treat p-phenol and γ-aminopropyltriethoxysilane in N-methylpyrrolidone with ultrasonic stirring at room temperature for 5 minutes, then add organic red pigment and ultrasonically stir for 60 minutes, so that the red pigment is evenly dispersed in N-methylpyrrolidone pyrrolidone solvent. In the remaining dimethylformamide, add 4,4'-diaminodiphenyl ether, stir to dissolve, add the treated red pigment solution into th...

Embodiment 2

[0030] The preparation method of the red polyimide film provided by the invention comprises the use of organic red pigment DPP red, the heat stabilizer is p-phenol, the coupling agent is γ-aminopropyltriethoxysilane, aromatic diamine mono The body is 4,4'-diaminodiphenyl ether, the aromatic dianhydride is pyromellitic dianhydride, the weight ratio of the organic red pigment in the polyamic acid is 4%, and the para-phenol occupies 4% of the organic red pigment. 10%, γ-aminopropyltriethoxysilane accounts for 5% of the organic red pigment.

[0031] Treat p-phenol and γ-aminopropyltriethoxysilane in N-methylpyrrolidone with ultrasonic stirring at room temperature for 5 minutes, then add organic red pigment and ultrasonically stir for 60 minutes, so that the red pigment is evenly dispersed in N-methylpyrrolidone pyrrolidone solvent. In the remaining dimethylformamide, add 4,4'-diaminodiphenyl ether, stir to dissolve, add the treated red pigment solution into the dissolved amine so...

Embodiment 3

[0033] The preparation method of the red polyimide film provided by the invention comprises the use of an azo organic red pigment permanent red FR, the heat stabilizer is p-phenol, the coupling agent is γ-aminopropyltriethoxysilane, aromatic The aromatic diamine monomer is 4,4'-diaminodiphenyl ether, the aromatic dianhydride is pyromellitic dianhydride, the organic red pigment accounts for 3% by weight in the polyamic acid, and the para-phenol occupies 5% of the organic red pigment, and γ-aminopropyltriethoxysilane accounts for 1% of the organic red pigment.

[0034] Treat p-phenol and γ-aminopropyltriethoxysilane in dimethylacetamide with ultrasonic stirring at room temperature for 5 minutes, then add organic red pigment and ultrasonically stir for 60 minutes, so that the red pigment is evenly dispersed in N-methyl pyrrolidone solvent. In the remaining dimethylformamide, add 4,4'-diaminodiphenyl ether, stir to dissolve, add the treated red pigment solution into the dissolved...

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Abstract

The invention discloses a preparation method of a high-temperature-resistant red polyimide film. The method comprises the following steps: 1) mixing a heat stabilizer, a coupling agent, a solvent andan organic red pigment, and carrying out ultrasonic stirring treatment to obtain a modified red solution; 2) adding an aromatic diamine into a solvent for dissolving; 3) mixing the modified red solution prepared in step 1) with the dissolved solution prepared in step 2), and performing dispersing by using a high-speed emulsifying pump; 4) adding aromatic dianhydride into an emulsified solution obtained in step 3) in batches, and performing a reaction to obtain a polyamide acid composite solution; and 5) performing slobbering forming on the polyamide acid composite solution obtained in step 4)to obtain the high-temperature-resistant red polyimide film. The organic pigment is modified with the coupling agent and the heat stabilizer in the solvent before being used, so that the problem of temperature difference resistance of the organic red pigment is solved, and meanwhile, and the coloring effect of the film is guaranteed.

Description

technical field [0001] The invention relates to the technical field of film preparation, in particular to a preparation method of a high-temperature-resistant red polyimide film. Background technique [0002] Polyimide (PI) film has been widely used in electronic circuits, aerospace and other fields due to its outstanding high temperature resistance, high strength, and low dielectric properties since it was put into use in the 1960s. With the rapid development of electronic technology, various industries have higher and higher requirements on the performance of polyimide film. [0003] High-temperature labels, wires and cables and other high-temperature, charged environments require the use of high-temperature-resistant insulating materials. Traditional red PVC film or red polyester materials cannot meet high temperature. Polyimide film can meet the requirements of high temperature resistance and high insulation, but its traditional color is yellow. Red polyimide film beca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L79/08C08G73/10
CPCC08G73/1007C08G73/1071C08J5/18C08J2379/08
Inventor 刘宸宇贝润鑫刘顺祯
Owner WUXI SHUNXUAN NEW MATERIALS
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