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Polyimide slurry and polyimide film

A technology of polyimide film and polyimide, which is applied in the field of electronic packaging, can solve the problems of low content, achieve good processability, reduce production energy consumption, and facilitate long-term storage and use

Active Publication Date: 2022-01-07
苏州尊尔光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low content of the added dehydrator and accelerator, the film preparation process still requires a high temperature imidization process at 240-500 °C

Method used

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  • Polyimide slurry and polyimide film
  • Polyimide slurry and polyimide film
  • Polyimide slurry and polyimide film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of microcapsule cyclizing agent

[0030] The total weight of raw materials is 1Kg, 30 parts by weight of methyl silicone oil is heated to 50°C, and 1 part by weight of paraffin, 30 parts by weight of chemical cyclizing agent and 0.5 part by weight of polyoxyethyl ether are added at a rate of 1 mL / min, wherein the chemical The cyclizing agent is composed of acetic anhydride and triethylamine, the molar ratio of which is 1:1. After stirring and mixing evenly, cooling, suction filtration and crushing, a capsule chemical cyclizing agent with a size of 30-50 μm is obtained, such as figure 1 shown.

[0031] (2) Preparation of polyimide slurry

[0032] Dissolve 14.01 g of 4,4’-diaminodiphenyl ether in 161.70 mL of N-methylpyrrolidone, add 15.26 g of pyromellitic anhydride, and react for 12 hours to obtain a transparent polyamic acid solution (mass fraction: 15 wt%). Add 15.00 g of capsule-shaped cyclizing agent, mix evenly after stirring, and obtain the polyi...

Embodiment 2

[0037] (1) Preparation of microcapsule cyclizing agent

[0038] The total weight of raw materials is 1Kg, 30 parts by weight of methyl silicone oil is heated to 50 ° C, and 15 parts by weight of paraffin, 30 parts by weight of chemical cyclizing agent and 0.5 part by weight of polyoxyethyl ether are added at a rate of 5 mL / min, wherein the chemical cyclic The cyclizing agent is composed of acetic anhydride and triethylamine, the molar ratio of which is 1:1. After stirring and mixing evenly, cooling, suction filtration and crushing, a capsule chemical cyclizing agent with a size of 80-120 μm is obtained, such as figure 2 shown.

[0039] (2) Preparation of polyimide slurry

[0040] Dissolve 14.01 g of 4,4’-diaminodiphenyl ether in 161.70 mL of N-methylpyrrolidone, add 15.26 g of pyromellitic anhydride, and react for 12 hours to obtain a transparent polyamic acid solution (mass fraction: 15 wt%). Add 22.00 g of capsule-shaped cyclizing agent, mix evenly after stirring, and obt...

Embodiment 3

[0045] (1) Preparation of microcapsule cyclizing agent

[0046]The total weight of raw materials is 1Kg, 30 parts by weight of methyl silicone oil is heated to 50 ° C, and 15 parts by weight of paraffin, 45 parts by weight of chemical cyclizing agent and 0.5 part by weight of polyoxyethyl ether are added at a rate of 1 mL / min, wherein the chemical cyclic The cyclizing agent is composed of acetic anhydride and isoquinoline with a molar ratio of 1:1. After stirring and mixing evenly, cooling, suction filtration and crushing, a capsule-shaped chemical cyclizing agent with a size of 100-150 μm is obtained, such as image 3 shown.

[0047] (2) Preparation of polyimide slurry

[0048] Dissolve 14.01 g of 4,4'-diaminodiphenyl ether in 161.70 mL of N-methylpyrrolidone, add 20.58 g of 3,3',4,4'-biphenyltetracarboxylic dianhydride, and react for 12 hours to obtain a transparent polyamide Acid solution (mass fraction 15wt%). Add 20 g of capsule-shaped cyclizing agent, mix evenly after...

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Abstract

The invention belongs to the technical field of electronic packaging, and particularly relates to polyimide slurry and a polyimide film. According to the technical scheme, the preparation method mainly comprises the following steps: preparation of microcapsules containing a chemical cyclizing agent, synthesis of a polyamide acid solution, mixing of the polyamide acid solution and the microcapsules, and preparation of the polyimide film. The method can effectively solve the problems that in the prior art, slurry produced through chemical imidization is prone to gelling, caking and non-uniformity, and the high-temperature imidization process can be effectively avoided. The slurry provided by the invention is used for curtain coating and film laying, and after heating and bidirectional drafting, a high-quality electronic-grade polyimide film with good transparency can be obtained.

Description

technical field [0001] The invention belongs to the technical field of electronic packaging, and in particular relates to a polyimide slurry and a polyimide film. Background technique [0002] With the rapid development of miniaturization, thin film, high performance and special functions of electronic and optoelectronic display devices, flexible technology is also developing rapidly in the direction of ultra-thin, refined and multi-layered. Flexibility technology puts forward higher requirements for polyimide film materials and processing processes for flexible circuits and packaging substrates. [0003] The traditional polyimide film preparation method is to prepare a film from a polyamic acid solution, and then undergo dehydration and cyclization at a high temperature of 300-400°C for imidization. The high temperature process has a great impact on the preparation, production and The application brings great restrictions. Adding a chemical cyclizing agent to the polymeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08J5/18C08L79/08
CPCC08G73/1071C08G73/1067C08J5/18C08J2379/08
Inventor 齐小璇张凌蔡臣董华张清华
Owner 苏州尊尔光电科技有限公司
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