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High-strength and high-modulus CPI film and preparation method thereof

A high-modulus, high-strength technology, applied in the field of CPI film, can solve the problems of complex and cumbersome manufacturing process of CPI film, lightness is not high, and achieve the effect of reducing input cost, reducing friction and high toughness

Pending Publication Date: 2021-01-22
湖南国柔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-strength and high-modulus CPI film and its preparation method, which solves the problem that the CPI film manufacturing process is complex and cumbersome, and the lightness is not high.

Method used

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  • High-strength and high-modulus CPI film and preparation method thereof

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Effect test

Embodiment 1

[0026] The embodiment of the present invention provides a high-strength and high-modulus CPI film, which comprises 120 parts of polyamic acid solution, 3 parts of epoxy resin, 5 parts of aluminum oxide, 11 parts of silane treatment agent and 1 part of erucamide in terms of mass fraction.

[0027] The preparation method of polyamide solution is in the existing conventional technology, and components such as pyromellitic dianhydride and biphenyltetracarboxylic dianhydride are mixed with p-phenylenediamine, diaminodiphenyl ether and 44'-diaminodiphenylmethane, etc. Aromatic diamine is obtained by polymerization reaction of diamine group as main component. The silane treatment agent is mainly composed of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane.

[0028] The CPI membrane preparation scheme is as follows:

[0029] S1. The preparation method of polyamide solution is in the existing conventional technology, components such as pyromellitic dianhydride and biphenyltetracarboxyli...

Embodiment 2

[0037] The differences between this example and Example 1 are: calculated by mass fraction, there are 124 parts of polyamic acid solution, 4 parts of epoxy resin, 5.5 parts of aluminum oxide, 13 parts of silane treatment agent, and 4 parts of erucamide.

[0038] When the epoxy resin in S2 is crushed, the temperature of the crushed equipment must be kept at 17°C. The rotation speed of the stirring rod for low-speed stirring in S4 is 32r / min, and the stirring speed in S5 is 210r / min. In S5, the temperature was raised to 77°C and the pressure was increased to 20Mpa, and the low-speed stirring time in S4 was 17 minutes.

Embodiment 3

[0040] The difference between this example and Example 1 is: calculated by mass fraction, there are 123 parts of polyamic acid solution, 5 parts of epoxy resin, 6 parts of aluminum oxide, 15 parts of silane treatment agent, and 6 parts of erucamide.

[0041] When the epoxy resin in S2 is crushed, the temperature of the crushed equipment must be kept at 18°C. The rotation speed of the stirring rod for low-speed stirring in S4 is 40r / min, and the stirring speed in S5 is 240r / min. In S5, the temperature was raised to 80°C and the pressure was increased to 30Mpa, and the low-speed stirring time in S4 was 17 minutes.

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Abstract

The invention provides a high-strength high-modulus CPI film and a preparation method thereof, and relates to the technical field of CPI films. The CPI film based on high strength and high modulus isprepared from the following components in parts by mass: 120-130 parts of polyamide acid solution, 3-8 parts of epoxy resin, 5-9 parts of aluminum oxide, 11-23 parts of silane treating agent and 1-15parts of erucyl amide. According to the invention, the CPI film is smooth in surface and small in friction force, equipment damage caused by short circuit of electronic components due to static electricity generated by friction is avoided, the CPI film is high in strength and not prone to damage, the service life of the CPI film is greatly prolonged, the preparation method of the CPI film is simple and rapid, needed equipment is conventional, and the preparation cost of products is reduced.

Description

technical field [0001] The invention relates to the technical field of CPI films, in particular to a high-strength and high-modulus CPI film and a preparation method thereof. Background technique [0002] Polyimide film, also known as CPI, is one of the earliest products of polyimide, used for motor slot insulation and cable wrapping materials. The main products are DuPont Kapton, Ube Industries' Upilex series and Zhongyuan Apical. Transparent polyimide films serve as flexible solar cell backplanes. The sail of IKAROS is made of polyimide film and fiber, polyimide fiber can be used for hot gas filtration, polyimide yarn can separate dust and special chemical substances from exhaust gas, polyimide Imines are chemically stable. Polyimide prevents burning without the addition of flame retardants. General polyimides are resistant to chemical solvents such as hydrocarbons, esters, ethers, alcohols and chlorofluorocarbons. They are also resistant to mild acids but are not rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L63/00C08K13/02C08K5/544C08K3/22C08K5/20C08J5/18
CPCC08J5/18C08J2379/08C08J2463/00C08K13/02C08K5/544C08K2003/2227C08K5/20
Inventor 高保清项婧侯忞辰蒲明良
Owner 湖南国柔科技有限公司
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