High-temperature-resistant coating with electromagnetic shielding performance and preparation method thereof

A high-temperature-resistant coating and electromagnetic shielding technology, applied in conductive coatings, fire-resistant coatings, polyurea/polyurethane coatings, etc., can solve problems such as poor heat resistance and poor electromagnetic shielding effect, and achieve smooth surface, easy movement, and good peelability Effect

Active Publication Date: 2020-08-18
山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor heat resistance and poor electromagnetic shielding effect of a single polyurethane paint film in the prior art, the invention provides a paint with electromagnetic shielding and a preparation method thereof to solve the above problems

Method used

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  • High-temperature-resistant coating with electromagnetic shielding performance and preparation method thereof
  • High-temperature-resistant coating with electromagnetic shielding performance and preparation method thereof

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Effect test

Embodiment 1

[0035] A preparation method of a high temperature resistant coating with electromagnetic shielding performance, the specific steps are as follows:

[0036](1) Preparation of polyesterimide resin

[0037] a. Take 110 parts of cresol and add it into the reactor, control the stirring speed to 2500~5000r / min, raise the temperature to 60°C under stirring, add 29.1 parts of trimellitic anhydride and 15.1 parts of 4,4'-diaminodiphenylmethane, slowly Raise the temperature to 120°C and keep it for 30 minutes; then raise the temperature to 145°C and keep it for 3 hours; finally cool down to 130°C;

[0038] b. Control the stirring speed at 3000-6000r / min, add 19.6 parts of dimethyl terephthalate, 28.2 parts of tris(2-hydroxyethyl)isocyanurate, 5.5 parts of ethylene glycol and The cresol solution of n-butyl titanate (0.2 parts of n-butyl titanate, 1 part of cresol), the temperature was raised to 150°C, and kept stirring for 2h; The reaction temperature was reacted at 190° C. until the r...

Embodiment 2

[0045] A preparation method of a high temperature resistant coating with electromagnetic shielding performance, the specific steps are as follows:

[0046] (1) Preparation of polyesterimide resin

[0047] a. Take 110 parts of cresol and add it into the reactor, control the stirring speed to 2500~5000r / min, raise the temperature to 60°C under stirring, add 29.1 parts of trimellitic anhydride and 15.1 parts of 4,4'-diaminodiphenylmethane, slowly Raise the temperature to 120°C and keep it for 30 minutes; then raise the temperature to 145°C and keep it for 3 hours; finally cool down to 130°C;

[0048] b. Control the stirring speed at 3000-6000r / min, add 19.6 parts of dimethyl terephthalate, 28.2 parts of tris(2-hydroxyethyl)isocyanurate, 6 parts of ethylene glycol and The cresol solution of n-butyl titanate (0.2 parts of n-butyl titanate, 1.5 parts of cresol), raised the temperature to 150°C, kept stirring for 2 hours; The reaction temperature was reacted at 190° C. until the re...

Embodiment 3

[0055] A preparation method of a high temperature resistant coating with electromagnetic shielding performance, the specific steps are as follows:

[0056] (1) Preparation of polyesterimide resin

[0057] a. Take 110 parts of cresol and add it into the reactor, control the stirring speed to 2500~5000r / min, raise the temperature to 60°C under stirring, add 29.1 parts of trimellitic anhydride and 15.1 parts of 4,4'-diaminodiphenylmethane, slowly Raise the temperature to 120°C and keep it for 30 minutes; then raise the temperature to 145°C and keep it for 3 hours; finally cool down to 130°C;

[0058] b. Control the stirring speed at 3000-6000r / min, add 19.6 parts of dimethyl terephthalate, 28.2 parts of tris(2-hydroxyethyl)isocyanurate, 5.5 parts of ethylene glycol and The cresol solution of n-butyl titanate (0.2 parts of n-butyl titanate, 1 part of cresol), the temperature was raised to 150°C, and kept stirring for 2h; then the temperature was raised to 160°C, and kept for 1h; ...

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Abstract

The invention relates to a high-temperature-resistant coating with an electromagnetic shielding performance and a preparation method thereof, and belongs to the technical field of high-temperature-resistant coatings. The high-temperature-resistant coating is prepared from the following components in parts by weight: 200 to 300 parts of polyester imide resin, 80 to 160 parts of cresol I, 1 to 2 parts of cresol II, 18 to 28 parts of cresol III, 100 to 200 parts of cresol IV, 20 to 60 parts of polyol, 22 to 66 parts of isocyanate, 2 to 30 parts of a graphene solution, 0.2 to 1.8 parts of stannousoctoate and 20 to 80 parts of xylene I, and 30-60 parts of xylene II. By modifying polyurethane and adding graphene, the high temperature resistance, the voltage resistance and the electric interference resistance of the high-temperature-resistant coating are obviously improved.

Description

technical field [0001] The invention belongs to the technical field of high-temperature-resistant coatings, and in particular relates to a high-temperature-resistant coating with electromagnetic shielding performance and a preparation method thereof Background technique [0002] Enameled wire is the main raw material for motors, electrical appliances, home appliances and other products. Especially in recent years, the power industry has achieved sustained and rapid growth, and the rapid development of home appliances has greatly increased the requirements for both quality and quantity of enameled wire. [0003] At present, the types of enameled wires are mainly divided into the following seven categories: acetals, polyesters, polyurethanes, polyesterimides, polyamideimides, polyimides and composite enameled wires. In order to improve the temperature resistance level and develop special-purpose enameled wires, the more common method is to use composite insulating layers. Com...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/24C09D7/61C09D7/20C08G73/16C08G18/64C08G18/65C08G18/32C08G18/66C08G18/42
CPCC08G18/4081C08G18/42C08G18/6438C08G18/6511C08G18/6517C08G18/664C08G18/6644C08G73/16C08K2201/001C09D5/18C09D5/24C09D175/04C09D7/20C09D7/61C08K3/042
Inventor 马洁栾晓波
Owner 山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心
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