High-voltage-resistant insulation material and preparation method thereof

An insulating material and high-voltage-resistant technology, applied in the field of high-voltage-resistant insulating materials and their preparation, can solve the problems of motor insulation aging failure, poor corona performance, and threaten the life insulation reliability of variable frequency motors, and achieve corona resistance and anti-corona performance. The effect of increased ablative power

Inactive Publication Date: 2017-07-25
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For motor insulation, polyimide film is currently the most important insulating material in variable frequency motors, but because of its poor corona performance as a polymer polymer, it is easily corroded by corona aging and causes aging failure of motor insulation, which is seriously Threatening the life of the inverter motor and the reliability of the insulation

Method used

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  • High-voltage-resistant insulation material and preparation method thereof
  • High-voltage-resistant insulation material and preparation method thereof

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specific Embodiment approach 1

[0025] A high-voltage resistant insulating material, the high-voltage resistant insulating material is mainly composed of trimellitic anhydride, 5-norbornane-2,3-dicarboxylic acid monomethyl ester, N-methylpyrrolidone, xylene, N,N-dicarboxylate Methylacetamide, phenol, 4,4'-diphenylmethane diisocyanate, modified nanoparticles, modified nanofibers, including 15 parts by weight of trimellitic anhydride, 20 parts of 5-norbornane- 2,3-dicarboxylic acid monomethyl ester, 30 parts of N-methylpyrrolidone, 10 parts of xylene, 15 parts of N,N-dimethylacetamide, 5 parts of phenol, 40 parts of 4,4 '-Diphenylmethane diisocyanate, 1 part of modified nanoparticles, 1 part of modified fibers.

[0026] In the high-voltage insulating material described in this embodiment, the modified nanoparticles are modified nano-SiO 2 and modified nano-Al 2 o 3 A mixture in which the modified nano-SiO 2 and modified nano-Al 2 o 3 The mass ratio is 0.2:1, and the modifying liquid is KH902 silane coupl...

specific Embodiment approach 2

[0034] According to the high-voltage-resistant insulating material described in the first specific embodiment, it includes the following steps:

[0035] Step 1, the weighed nano-SiO 2 and nano Al 2 o 3 Place the modified liquid in the alcohol solution of KH902 silane coupling agent, mix and stir for 120 minutes, let it stand for 24 hours, filter the mixture obtained after suction, and dry it in vacuum to obtain modified nanoparticles, which are ready for use;

[0036] Step 2. Put the weighed glass fiber in the KH902 silane coupling agent alcohol solution as the modification liquid, mix and stir for 120 minutes, then let it stand for 24 hours, filter the mixture obtained after suction, dry it in a vacuum, and carry out surface mechanical grinding. Obtain modified fiber, stand-by;

[0037] Step 3. Add the weighed trimellitic anhydride, 5-norbornane-2,3-dicarboxylic acid monomethyl ester, and N-methylpyrrolidone into a three-necked beaker equipped with nitrogen protection, mec...

specific Embodiment approach 3

[0045] A high-voltage resistant insulating material, the high-voltage resistant insulating material is mainly composed of trimellitic anhydride, 5-norbornane-2,3-dicarboxylic acid monomethyl ester, N-methylpyrrolidone, xylene, N,N-dicarboxylate Methylacetamide, phenol, 4,4'-diphenylmethane diisocyanate, modified nanoparticles, modified nanofibers, including 30 parts by weight of trimellitic anhydride, 30 parts of 5-norbornane- 2,3-dicarboxylic acid monomethyl ester, 70 parts of N-methylpyrrolidone, 20 parts of xylene, 30 parts of N,N-dimethylacetamide, 10 parts of phenol, 100 parts of 4,4 '-Diphenylmethane diisocyanate, 5 parts of modified nanoparticles, 1 part of modified fiber.

[0046] In the high-voltage insulating material described in this embodiment, the modified nanoparticles are modified nano-SiO 2 and modified nano-Al 2 o 3 A mixture in which the modified nano-SiO 2 and modified nano-Al 2 o 3 The mass ratio is 1:10, and the modifying liquid is KH902 silane coup...

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Abstract

The invention relates to a high-voltage-resistant insulation material and a preparation method thereof, and belongs to the field of insulation material preparation. The high-voltage-resistant insulation material is mainly prepared from the following raw materials in parts by weight: 15 to 30 parts of trimellitic anhydride, 20 to 30 parts of 5-norbornene-2,3-dicarboxylic monomethylester, 30 to 70 parts of N-methyl pyrrolidone, 10 to 20 parts of xylene, 15 to 30 parts of N,N-dimethylacetamide, 5 to 10 parts of phenol, 20 to 100 parts of 4,4'-diphenylmethane diisocyanate, 0.5 to 10 parts of modified nanometer particles and 0.5 to 10 parts of modified fiber. The high-voltage-resistant insulation material has the advantages that the high-voltage-resistant performance is unchanged; the corona-resistant capability and the ablation-resistant capability are improved.

Description

technical field [0001] The invention belongs to the field of insulating material preparation, and in particular relates to a high-voltage resistant insulating material and a preparation method thereof. Background technique [0002] Polyimide is one of the organic polymer materials with the best comprehensive properties. It can withstand high temperatures above 400°C and has a long-term service temperature range of -200 to 300°C. It has no obvious melting point and high insulation performance. As a special engineering material, polyimide has been widely used in aviation, aerospace, microelectronics, nanometer, liquid crystal, separation membrane, laser and other fields. However, the traditional polyimide film monomers have low reactivity, and it is difficult to prepare high molecular weight polyimide resins, resulting in a significant decline in the overall performance of its film products and low mechanical properties, hindering further promotion of the product. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K9/06C08K7/14C08K3/22C08K3/36C08J7/12C08J5/18C08G73/10
CPCC08J7/126C08G73/1003C08J5/18C08J2379/08C08K3/22C08K3/36C08K7/14C08K9/06C08K2003/2227C08K2201/003C08K2201/004C08K2201/011C08L2203/16C08L79/08C08L79/085
Inventor 曹铁男
Owner HARBIN UNIV OF SCI & TECH
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