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Preparation method and application of polyamide acid varnish

A technology of polyamic acid and varnish, applied in the direction of coating, etc., can solve the problems of being unable to withstand high heat, unable to provide long-term stable work, etc., and achieve high PDIV and reduce VOC emissions

Active Publication Date: 2022-05-10
南通博联材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the self-adhesive component used in this invention is selected from epoxy resin, polyvinyl butyral, and polyamide, which is a material that cannot withstand high heat and cannot provide long-term stable work at a temperature of 250°C.

Method used

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  • Preparation method and application of polyamide acid varnish
  • Preparation method and application of polyamide acid varnish
  • Preparation method and application of polyamide acid varnish

Examples

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preparation example Construction

[0036] Preparation of thermoplastic resin powder emulsion

[0037] In Examples A1 to A4, 3kg of thermoplastic resin powder was added to 6.9kg of solvent, and 0.1kg of 2-amino-2-methyl-1-propanol was added, and high-speed grinding was performed for 3 hours to obtain a thermoplastic resin powder emulsion.

Embodiment A5

[0038] Example A5, 3kg of thermoplastic polyimide powder 2600TF was added to 6.9kg of NMP solvent, and 0.1kg of 2-amino-2-methyl-1-propanol was added, and high-speed grinding was performed for 3 hours to obtain thermoplastic resin powder emulsion.

Embodiment A6

[0039] Example A6, 3 kg of thermoplastic polyimide powder 2600TF was added to 6.9 kg of DMAC solvent, and 0.1 kg of DISPERBYK-102 was added, and high-speed grinding was performed for 3 hours to obtain a thermoplastic resin powder emulsion.

[0040] The above embodiment parameters are recorded in the following table 1.

[0041] Table 1

[0042]

[0043] Preparation of Nano Al2O3 Solution

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Abstract

The invention relates to a preparation method and application of polyamic acid varnish, the preparation method of the polyamic acid varnish contains modified thermoplastic resin powder and a nano inorganic solution treated by a coupling agent, and the preparation method of the polyamic acid varnish further comprises the following steps: S1, preparing a modified thermoplastic resin powder emulsion; s2, preparing a nano inorganic substance solution treated by a coupling agent; and S3, selecting a polyamic acid solution with the BOIMIDTM brand model of BOIMID28, adding a certain amount of the solution prepared in the step S1 and the solution prepared in the step S2 into the polyamic acid solution, physically stirring at a high speed, and fully and uniformly mixing to obtain the polyamic acid varnish. According to the invention, the self-adhesive polyimide and the composition thereof, which have high partial discharge initial voltage (PDIV) and can stably work at the temperature of 250 DEG C for a long time, can be provided.

Description

technical field [0001] The invention belongs to the field of polymer material modification, in particular, it relates to a self-adhesive polyimide composition which can provide a high partial discharge initiation voltage (PDIV) and can work stably for a long time at a temperature of 250°C. Background technique [0002] In recent years, as global warming has attracted more and more attention, people from all over the world have realized that carbon dioxide emissions and greenhouse gases have soared, which will pose a serious threat to the earth's ecosystem on which human beings depend. As a result, China has proposed the goal of carbon peaking and carbon neutrality, and advocated that all countries in the world reduce greenhouse gas emissions through a global agreement. As a result, countries around the world are deploying new energy sources one after another, replacing traditional internal combustion engine drives with electric drives. Miniaturized, high-output motors are i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D7/65C09D7/62
CPCC09D179/08C09D7/65C09D7/62C08K2003/2227C08L2203/20C08L79/08C08K9/06C08K3/22C08L61/16C08L27/18C08K9/08
Inventor 吴峥
Owner 南通博联材料科技有限公司
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