Preparation method of polyimide resin and polyimide resin thin film prepared by preparation method

A technology of polyimide resin and polyimide film, which is applied in the field of resin manufacturing, manufacturing method and polyimide film manufactured by using the same, can solve the problems of low thermal stability of plastic substrates and increased demand. , to achieve the effects of excellent thermal stability, good thermal stability and superior commercial applicability

Active Publication Date: 2014-12-17
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the thermal stability of plastic substrates is inherently low, and physical properties need to be improved for practical use. Therefore, there is an increasing demand for polyimide polymer materials with excellent heat resistance

Method used

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  • Preparation method of polyimide resin and polyimide resin thin film prepared by preparation method
  • Preparation method of polyimide resin and polyimide resin thin film prepared by preparation method
  • Preparation method of polyimide resin and polyimide resin thin film prepared by preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Prepare a reactor with an attached stirrer, nitrogen injector, dropping funnel, temperature regulator, and condenser. Nitrogen gas was injected into the above reactor, and 5.97000 mol of DMAC solvent was put into it. The temperature of the reactor was kept below 20° C., and 0.20000 mol of 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl (2,2′-TFDB) was dissolved. Put 0.15mol of benzophenone tetra-acid dianhydride marked as chemical formula (1), 0.02299 mol of benzophenone tetra-acid dianhydride marked as chemical formula (2), and 0.04269 mol of benzophenone tetra-acid dianhydride marked as chemical formula (3) in the above reactor of benzophenone tetracarboxylic dianhydride. After 24 hours of reaction, a colorless and transparent polyamic acid with a viscosity in the range of 1000-2000 cps and a cure rate of 22 wt % was obtained.

[0042] Spin coating colorless and transparent polyamic acid solution on the substrate and heat treatment. First, the temperature was increa...

Embodiment 2

[0045] Prepare a reactor with an attached stirrer, nitrogen injector, dropping funnel, temperature regulator, and condenser. Inject nitrogen gas into the above reactor, and put 5.97000 mol of N-methyl-2-pyrrolidone (NMP) m-cresol solvent. The temperature of the reactor was kept below 20° C., and 0.20000 mol of 3,3′-bis(trifluoromethyl)-4,4′-diaminobiphenyl (33′-TFDB) was dissolved. Put 0.15000mol of benzophenone tetra-acid dianhydride marked as chemical formula (1), 0.02299 mol of benzophenone tetra-acid dianhydride marked as chemical formula (2) in the above reactor, and 0.04269 mol marked as chemical formula (3) of benzophenone tetracarboxylic dianhydride. After 24 hours of reaction, a colorless and transparent polyamic acid with a viscosity in the range of 1000-2000 cps and a cure rate of 22 wt % was obtained.

[0046] The colorless and transparent polyamic acid solution Doctorblade is coated on the substrate and then heat treated. First, the temperature was increased to...

Embodiment 3

[0050] Prepare a reactor with an attached stirrer, nitrogen injector, dropping funnel, temperature regulator, and condenser. Nitrogen gas was injected into the above reactor, and 5.97000 mol of DMSO solvent was put into it. Keep the temperature of the reactor below 20°C and dissolve 0.20000mol of 4,4'-amine oxidase. Put 0.15000mol of benzophenone tetra-acid dianhydride marked as chemical formula (1), 0.02299 mol of benzophenone tetra-acid dianhydride marked as chemical formula (2) in the above reactor, and 0.04269 mol marked as chemical formula (3) of benzophenone tetracarboxylic dianhydride. After 24 hours of reaction, a colorless and transparent polyamic acid with a viscosity in the range of 1000-2000 cps and a cure rate of 22 wt % was obtained.

[0051] The colorless and transparent polyamic acid solution Slotdie is coated on the substrate and then heat treated. First, the temperature was increased to 120° C., and the solvent was evaporated for 5 minutes to obtain solid ...

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Abstract

The invention relates to a preparation method of a polyimide resin and a polyimide resin thin film prepared by the preparation method. The method can be used for polymerizing plural benzophenonetetracarboxylic dianhydrides which are different from diamine in types, and the thermal stability is excellent and the yellow color index is low. The preparation method of the polyimide resin comprises the following steps: a forming stage of dissolving diamine in a solvent to form a first solvent; a second forming stage of mixing the benzophenonetetracarboxylic dianhydride shown in a chemical formula (1), the benzophenonetetracarboxylic dianhydride shown in a chemical formula (2) and the benzophenonetetracarboxylic dianhydride shown in a chemical formula (3) in the first solution to generate a second solution containing polyamide acid; and a thermal treatment stage of the second solvent. The polyimide resin thin film can be further prepared by using the polyimide resin. The prepared polyimide thin film has excellent commercial applicability. The polyimide resin thin film not only has excellent thermal stability in thermal performance, but also the coefficient of thermal expansion can be further reduced to below existing coefficient. The polyimide resin thin film has excellent dimensional stability.

Description

technical field [0001] The present invention relates to a method for producing polyimide resin and a polyimide film produced by using it, more specifically, a method for producing a resin that polymerizes a plurality of benzophenone tetraacid dianhydrides different from diamines And the polyimide film made by it. Background technique [0002] With the advent of the information society that has developed rapidly in recent years, the development of optical materials such as optical fibers and optical waveguides in the field of optical communications, liquid crystal alignment films in the field of display devices, and protective films for color filters is in full swing. . In particular, the discussion on the alternative of the glass substrate in the field of display devices, that is, the plastic substrate with light weight and good flexibility, and the research and development of bendable or rollable display screens have attracted widespread attention. Therefore, in this appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08L79/08
Inventor 马晓宇王辉高春吉
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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