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Thermally conductive electrical insulating materials, electrical insulating coatings using the same, and electrical insulating wires

An electrical insulating material, electrical insulating technology, applied in the direction of insulated cables, insulators, insulated conductors, etc., can solve the problems of no touch electrical insulating materials, excellent thermal conductivity of polymer compounds, etc., to achieve excellent effect, excellent thermal conductivity, resistance to Excellent thermal effect

Active Publication Date: 2021-08-31
TOTOKU TORYO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no description of polyamideimide resins having 4,4'-stilbene dicarbonate group repeating units
Also, there is no description of the repeating unit of the amide bond of 4,4'-stilbene dicarboxamide
In addition, patent documents describe polymer compounds excellent in characteristics as luminescent materials and / or electron transport materials, such as fluorescence intensity, charge transport properties, etc., but there is no information about touch electrical insulating materials, electrical insulating paints, and electrical insulating wires.
Moreover, there is no description about the excellent thermal conductivity of polymer compounds

Method used

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  • Thermally conductive electrical insulating materials, electrical insulating coatings using the same, and electrical insulating wires
  • Thermally conductive electrical insulating materials, electrical insulating coatings using the same, and electrical insulating wires
  • Thermally conductive electrical insulating materials, electrical insulating coatings using the same, and electrical insulating wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0206] As shown in Table 1, in molar ratios, the following materials were used:

[0207] 4,4'-Stilbene dicarboxylic acid amide (StDA): 0.2;

[0208] 3,3',4,4'-biphenyltetracarboxylic anhydride (BPDA): 0.1;

[0209] Pyromellitic anhydride (PMDA): 0.1;

[0210] Trimellitic anhydride (TMA): 0.6; and

[0211] Diphenylmethane diisocyanate (MDI): 1.0,

[0212] Each material was dissolved in N-methyl-2-pyrrolidone (NMP) at a prepared concentration of 25%, and kept at 80°C for 1 hour, followed by heating at 120°C for 2 hours and 2 hours at 170°C. hours, a polyamide-imide resin coating was produced. The resin component concentration was 23.4%. The viscosity of the polyamideimide resin paint was 42.9 dPa·s (at 30°C). The state of the paint was good because there was no deposition of precipitates or the like. The value of k is 0.36 W / (m·K).

Embodiment 2

[0214] As shown in Table 1, in molar ratios, the following materials were used:

[0215] 4,4'-Stilbene dicarboxylic acid amide (StDA): 0.2;

[0216] 3,3',4,4'-biphenyltetracarboxylic anhydride (BPDA): 0.1;

[0217] Trimellitic anhydride (TMA): 0.7; and

[0218] Diphenylmethane diisocyanate (MDI): 1.0;

[0219] Each material was dissolved in N-methyl-2-pyrrolidone (NMP) at a prepared concentration of 25%, and a polyamide-imide resin coating was produced in the same manner as in Example 1. The viscosity was 23.2 dPa·s (at 30°C). The state of the paint was good because there was no deposition of precipitates or the like.

Embodiment 3

[0221] As shown in Table 1, in molar ratios, the following materials were used:

[0222] 4,4'-Stilbene dicarboxylic acid amide (StDA): 0.3;

[0223] 3,3',4,4'-biphenyltetracarboxylic anhydride (BPDA): 0.2;

[0224] Trimellitic anhydride (TMA): 0.5; and

[0225] Diphenylmethane diisocyanate (MDI): 1.0,

[0226] Each material was dissolved in N-methyl-2-pyrrolidone (NMP) at a prepared concentration of 25%, and a polyamide-imide resin coating was produced in the same manner as in Example 1. The viscosity was 18.3 dPa·s (at 30°C). The state of the paint was good because there was no deposition of precipitates or the like.

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Abstract

The present invention relates to a thermally conductive electrical insulating material, an electrical insulating coating using the same, and an electrical insulating wire, the thermally conductive electrical insulating material comprising a repeating unit of 4,4'-stilbene dicarbonate group The polyamide-imide resin is, in particular, a polyamide-imide resin including an amide bond of stilbene dicarboxylic acid represented by the general formula (I). It is useful for insulating coils of motors used in solar cars using solar cells, and is particularly excellent in heat resistance and the like in addition to excellent thermal conductivity. Thermal conductivity can be improved without using a filler.

Description

technical field [0001] The present invention relates to a kind of electrical insulation material with thermal conductivity, the electrical insulation paint using it and the electrical insulation electric wire based on this electrical insulation paint, relate in detail to a kind of material with 4,4'-stilbene dicarbonate Polyamide-imide resins formed by repeating units of radicals, especially polyamide-imide resins formed by polyamide-imide resins having stilbene dicarboxylic acid amide bonds, thermally conductive electrical insulating materials, and electrical insulating coatings using it and electrically insulated wires. Background technique [0002] A solar car, which is a car powered by a solar cell and driven by an electric motor, converts light energy from the sun into electrical energy through the solar cell, and inputs the light energy into the electric motor as power to drive by rotating tires. In order to utilize the electric power of a solar cell to the maximum, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/08C08G73/14C09D179/08C09D5/25
CPCC08G73/14C08L79/08C09D179/08H01B3/308C08G73/1035C08G73/1042C08G73/1067H01B3/306H01B7/292
Inventor 甲贺敏美藤仓裕一福田克彦施荣舜
Owner TOTOKU TORYO