Preparation method of corona-resistant polyimide film with high elongation at break

A technology of polyimide film and elongation, which is applied in the field of organic polymer materials, can solve the problems that the elongation at break and corona resistance of polyimide film cannot meet market demand, so as to improve mechanical properties, The effect of increasing the reaction rate

Pending Publication Date: 2022-03-29
GUANGDONG ANDELI NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the scope of application becomes wider and wider, the requirements for polyimide properties are getting higher and higher. The elongation at break and corona resistance of polyimide films in the prior art have been unable to meet the existing market demand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of a high elongation at break corona-resistant polyimide film, comprising the following steps:

[0042] (1) Preparation of modified nano-alumina:

[0043] Add silane coupling agent, titanate coupling agent TMC-201 and n-butanol solution to the nano-alumina powder, and sonicate for 2 hours under 400W ultrasonic power; then move it into a microwave reactor to stir and react at a stirring rate of 50-3000r / min , while stirring, irradiate the solution with Nd:YAG solid-state pulsed laser for 350min, turn on the ultraviolet lamp irradiation and microwave heating and condensing reflux at the same time; -30h, after drying at 60-80°C for 12-48h, the surface-modified nanoparticles can be obtained.

[0044] Among them, the mass ratio of nano-alumina, silane coupling agent, titanate coupling agent TMC-201 and n-butanol solution is 15:1:1:200.

[0045] The laser parameters are wavelength 1.06μm, pulse width 1.2ms, spot diameter 0.2mm, repetition frequency 20Hz...

Embodiment 2

[0057] A preparation method of a high elongation at break corona-resistant polyimide film, comprising the following steps:

[0058] (1) Preparation of modified nano-alumina:

[0059] Add silane coupling agent, titanate coupling agent TMC-201 and n-butanol solution to the nano-alumina powder, sonicate for 0.5h under 600W ultrasonic power; then move it into a microwave reactor to stir the reaction, the stirring rate is 50-3000r / min, while stirring, irradiate the solution with Nd:YAG solid-state pulsed laser for 720min, and turn on the ultraviolet lamp irradiation, microwave heating and condensing reflux at the same time; After drying for 15-30 hours at 60-80°C for 12-48 hours, the surface-modified nanoparticles can be obtained.

[0060] Among them, the mass ratio of nano-alumina, silane coupling agent, titanate coupling agent TMC-201 and n-butanol solution is 25:4:4:300.

[0061] The laser parameters are wavelength 1.06μm, pulse width 1.2ms, spot diameter 0.2mm, repetition fr...

Embodiment 3

[0073] A preparation method of a high elongation at break corona-resistant polyimide film, comprising the following steps:

[0074] (1) Preparation of modified nano-alumina:

[0075] Add silane coupling agent, titanate coupling agent TMC-201 and n-butanol solution to the nano-alumina powder, sonicate for 1 hour under 500W ultrasonic power; then move it into a microwave reactor to stir and react at a stirring rate of 50-3000r / min , while stirring, irradiate the solution with Nd:YAG solid-state pulsed laser for 1min, turn on the ultraviolet lamp irradiation and microwave heating and condensing reflux at the same time; -30h, after drying at 60-80°C for 12-48h, the surface-modified nanoparticles can be obtained.

[0076] Among them, the mass ratio of nano-alumina, silane coupling agent, titanate coupling agent TMC-201 and n-butanol solution is 27:3:3:250.

[0077] The laser parameters are wavelength 1.06μm, pulse width 1.2ms, spot diameter 0.2mm, repetition frequency 20Hz, power...

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Abstract

The invention discloses a preparation method of a corona-resistant polyimide film with high elongation at break, and belongs to the technical field of organic polymer materials, and the preparation method comprises the following steps: (1) adding diamine into an organic solvent for dissolving, and then adding modified nano aluminum oxide for ultrasonic dispersion to obtain a suspension; (2) adding dianhydride into the suspension, uniformly mixing, and reacting at 0-60 DEG C for 10-24 hours to obtain a polyamide acid solution; (3) adding organic alkali into the polyamide acid solution for salt forming reaction, and then adding a dehydrating agent and a catalyst for continuous reaction to obtain a polyimide solution; (4) adding a high-boiling-point solvent into the polyimide solution, and then coating the polyimide solution on a support body for stepped drying; the corona-resistant polyimide film with the high elongation at break is obtained. The corona-resistant polyimide film with high elongation at break, which is prepared by the preparation method provided by the invention, has good elongation at break and relatively strong corona resistance.

Description

technical field [0001] The invention relates to the technical field of organic polymer materials, in particular to a method for preparing a corona-resistant polyimide film with high elongation at break. Background technique [0002] Polyimide is the best performance thin-film insulating material in the world, commonly known as "golden film", which is inseparable from high-speed trains, missiles, fighter jets, thin and miniaturized notebook computers, smart phones, cameras, video cameras and other electronic products it. [0003] With the development of science and technology, in addition to meeting the basic physical requirements of various products, polyimide films also have special properties such as high strength, high toughness, wear resistance, high temperature resistance, and corrosion resistance. Short and small design requirements, it is a high temperature resistant insulating material with competitive advantages. After more than 40 years of development, it has bec...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L79/08C08K9/06C08K9/04C08K3/22C08G73/10
CPCC08J5/18C08G73/1032C08G73/1042C08G73/1071C08J2379/08C08K9/06C08K9/04C08K2201/011C08K2003/2227
Inventor 陈汉城林杰生王毅刚王桂彬杨如娥
Owner GUANGDONG ANDELI NEW MATERIALS CO LTD
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