Preparation process of anti-curling polyimide thin film

A warping polyimide and preparation technology, which is applied in the field of anti-curling polyimide film preparation technology, can solve problems affecting the construction schedule, alignment deviation, workpiece deformation, etc.

Inactive Publication Date: 2019-12-10
合肥中汇睿能能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional polyimide film is used in the insulation industry and basically meets the requirements for use, but if it is used in the flexible circuit or battery industry, it must be used for heating operations such as glue coating and soldering. As the temperature rises, the shape changes and the problem of curling and warping occ...

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] A kind of preparation technology of anti-curling polyimide film, comprises the following steps:

[0022] 1) Preparation of calcium molybdate nanopowder: ammonium heptamolybdate and calcium nitrate are dissolved in water respectively to make ammonium molybdate solution of 1% concentration and calcium nitrate solution of 3% concentration, the molar amount of ammonium heptamolybdate and calcium nitrate The ratio is 1:6, add 1mol / L ammonia solution dropwise to the ammonium molybdate solution to make a mixed solution, the volume ratio of the ammonium molybdate solution to the ammonia solution is 8:1, add dropwise calcium nitrate solution to the mixed solution , continue to react for 1.5h, filter, wash the filter cake by centrifugation with water and absolute ethanol for 3 times, and dry at 50°C for 5.0h to obtain calcium molybdate nanopowder;

[0023] 2) Preparation of modified nanopowder: Dissolve KH550 in absolute ethanol, then add water, the mass ratio of KH550, absolute ...

Embodiment 2

[0028] A kind of preparation technology of anti-curling polyimide film, comprises the following steps:

[0029] 1) Preparation of calcium molybdate nanopowder: ammonium heptamolybdate and calcium nitrate are dissolved in water respectively to make ammonium molybdate solution of 1% concentration and calcium nitrate solution of 3% concentration, the molar amount of ammonium heptamolybdate and calcium nitrate The ratio is 1:8, add 1mol / L ammonia solution dropwise to the ammonium molybdate solution to make a mixed solution, the volume ratio of the ammonium molybdate solution to the ammonia solution is 8:1, add dropwise calcium nitrate solution to the mixed solution , continue to react for 3.0h, filter, wash the filter cake by centrifugation with water and absolute ethanol for 3 times, and dry at 50°C for 3.0h to obtain calcium molybdate nanopowder;

[0030] 2) Preparation of modified nanopowder: Dissolve KH550 in absolute ethanol, then add water, the mass ratio of KH550, absolute ...

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PUM

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Abstract

The invention relates to the technical field of preparation of polyimide thin films, in particular to a preparation process of an anti-curling polyimide thin film. The preparation process comprises the following steps: preparation of calcium molybdate nanopowder, preparation of modified nanopowder, synthesis of polymer resin, resin regulation and film formation. The surfaces of calcium molybdate nanoparticles are modified through KH550, the nanoparticles are prevented from being agglomerated in the polymer resin through volume steric hindrance of a long chain organic part, meanwhile, the compatibility between inorganic nanoparticle calcium molybdate and an organic polymer is also improved, and thus the nanoparticles are more evenly dispersed in a polyimide substrate; and a continuous and complete three-dimensional network is formed in the KH550-CaMoO4 nanoparticle polyimide substrate, thus the rigidity of polymer molecular chains is enhanced, acting force between the molecular chains is enhanced, energy needed for bending and cracking of the polymer molecular chains at the high temperature is increased, and the prepared thin film is good in anti-curling performance.

Description

technical field [0001] The invention relates to the technical field of polyimide film preparation, in particular to a preparation process of an anti-curling polyimide film. Background technique [0002] Microelectronics technology is the foundation of the development of the information society and one of the symbols to measure the level of national science and technology and industrial development. The development of modern microelectronics industry puts forward higher and higher performance requirements for the materials used. As a high-performance polymer, polyimide is widely used because of its high thermal stability, excellent mechanical properties, good chemical resistance and electrical insulation, and low dielectric constant. Therefore, polyimide is widely used in aerospace, nuclear power, microelectronics and other industries, such as interlayer insulation materials for multilayer wiring, semiconductor integrated circuit packaging, buffer coating layers, α-particle s...

Claims

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Application Information

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IPC IPC(8): C08G73/10C08K9/06C08K3/24C08J5/18C08L79/08
CPCC08G73/1067C08J5/18C08J2379/08C08K3/24C08K9/06C08K2201/011
Inventor 王文静
Owner 合肥中汇睿能能源科技有限公司
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