Water-soluble polyimide resin solution and preparation method thereof

A polyimide resin, water-soluble technology, applied in the field of preparation of water-soluble polyimide resin solution, can solve the problems of a large number of organic solvents, achieve the effect of reducing usage and improving safety

Active Publication Date: 2017-07-07
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that a large amount of organic solvent is needed when using polyamide resin in liquid form, the invention provides a water-soluble polyimide resin solution with low price and simple preparation process and its preparation method

Method used

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  • Water-soluble polyimide resin solution and preparation method thereof
  • Water-soluble polyimide resin solution and preparation method thereof

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preparation example Construction

[0023] see figure 2 , the embodiment of the present invention further provides a method for preparing the water-soluble polyimide resin solution, comprising:

[0024] S1, mixing an organic solvent-based polyimide resin solution with an anionic surfactant to obtain a mixed solution, the organic solvent-based polyimide resin solution is composed of an organic solvent and a polyimide resin, and the anionic surface The mass of the active agent is 10% to 55% of the mass of the polyimide resin; and

[0025] S2, under the condition of stirring, gradually add water into the mixed solution for reaction until a transparent, uniform and stable solution of the water-soluble polyimide resin is obtained.

[0026] In the step S1, the organic solvent-based polyimide resin solution can be purchased directly from the market, or can be prepared by yourself. When self-configuring, the polyimide resin can be directly dissolved in the organic solvent to obtain the organic solvent-type polyimide ...

Embodiment 1

[0038] Weighing solid content is 10% organic solvent type polyimide resin solution 30g, described organic solvent is dimethylacetamide, adds 3.3g sodium dodecylbenzene sulfonate, stirs 1 hour and makes it mix homogeneously, Obtain a transparent mixed solution; add deionized water dropwise while stirring at a temperature of 30°C, the stirring speed is 200r / min, and the quality of water added to the mixed solution per minute is 0.3g. After adding 120g of water, a transparent, Uniform and stable water-soluble polyimide resin solution.

Embodiment 2

[0040] Weighing 30g of an organic solvent-based polyimide resin solution with a solid content of 20%, the organic solvent being tetrahydrofuran, adding 2.1g sodium dodecylbenzenesulfonate, stirring for 3.5 hours to make it mix uniformly, and obtain a transparent mixture Liquid; add deionized water dropwise while stirring at a temperature of 50°C, the stirring speed is 500r / min, and the mass of water added to the mixed solution per minute is 0.6g. After adding 70g of water, a transparent, uniform and stable Water-soluble polyimide resin solution.

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Abstract

The invention discloses a water-soluble polyimide resin solution and a preparation method thereof. The preparation method comprises following steps: an organic solvent type polyimide resin solution is mixed with an anionic surfactant so as to obtain a mixed solution, wherein the organic solvent type polyimide resin solution is composed of an organic solvent and polyimide resin, and the mass of the anionic surfactant accounts for 10 to 55% of the mass of polyimide resin; water is added into the mixed solution with stirring for reaction until the water-soluble polyimide resin solution is obtained, wherein, for each minute, the mass of added water accounts for 0.2 to 4% of the mass of the organic solvent type polyimide resin solution.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method of a water-soluble polyimide resin solution. Background technique [0002] Polyimide resin refers to a class of high molecular polymers containing imide rings in the main chain, which has good high temperature resistance, mechanical properties, insulation properties, and electrical properties. With the rapid development of aerospace and electronic industries, this high-performance polymer material has been developed rapidly. At present, it has been widely used in aviation, aerospace, microelectronics, nanometer, liquid crystal, separation membrane, laser and other fields. Including plastics, composite materials, films, adhesives, fibers, foams, liquid crystal alignment agents, separation films, photoresists, etc., are considered to be "problem-solving experts" and believe that "without polyimide, there will be no Today's Microelectronic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/08C08J3/09C08J3/07
CPCC08J3/07C08J3/095C08J3/096C08J2379/08C08L79/08
Inventor 王仁荣吴珍秦昀昌郝妮
Owner GOLD EAST PAPER JIANGSU
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