Cardanol modified waterborne insulating varnish and preparation method thereof

A technology of cardanol and insulating paint, applied in the field of insulating paint, can solve the problems of serious environmental pollution, damage to the health of operators, and high cost of insulating paint, and achieve the effects of reducing production cost, low risk and safe transportation.

Active Publication Date: 2016-06-15
JIANGXING JIASHENG INSULATION MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Insulating varnish is generally used to impregnate motors and electrical coils to fill the gaps and micropores in the insulation system, and to form a continuous paint film on the surface of the impregnated object, and to bond the coils into a solid whole, effectively improving the integrity of the insulation system. performance, thermal conductivity, moisture resistance, dielectric strength and mechanical strength; however, the exis...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A cardanol modified water-based insulating paint, made of the following raw materials in parts by weight: cardanol 14, isophthalic acid 17, trimethylolpropane 9, neopentyl glycol 12, pyromellitic anhydride 7, cis Butenedioic anhydride 7, methyl etherified amino resin 12, dimethylethanolamine 7, ethylene glycol butyl ether 16, water-based dispersant 0.1.

[0014] The model of the water-based dispersant is BYK021.

[0015] The preparation method comprises the following steps:

[0016] (1) Put cardanol, trimethylolpropane, isophthalic acid, and neopentyl glycol into the reactor together, and start stirring after the reactor is heated to 120° C.;

[0017] (2) The temperature of the reaction kettle is raised to 160-210° C., and the temperature is kept until the acid value of the mixture is less than 35;

[0018] (3) Pyromellitic anhydride and maleic anhydride are put into the reactor, and the reactor is kept at 170-180° C. for 1 hour;

[0019] (4) Put the mixture in the r...

Embodiment 2

[0021] A cardanol modified water-based insulating varnish, made of the following raw materials in parts by weight: 16 cardanols, 18 isophthalic acid, 12 trimethylolpropane, 15 neopentyl glycol, 8 pyromellitic anhydride, cis Butenedioic anhydride 8, methyl etherified amino resin 14, dimethylethanolamine 9, ethylene glycol butyl ether 17, water-based dispersant 0.5.

[0022] The model of the water-based dispersant is BYK021.

[0023] The preparation method comprises the following steps:

[0024] (1) Put cardanol, trimethylolpropane, isophthalic acid, and neopentyl glycol into the reactor together, and start stirring after the reactor is heated to 120° C.;

[0025] (2) The temperature of the reaction kettle is raised to 160-210° C., and the temperature is kept until the acid value of the mixture is less than 35;

[0026] (3) Pyromellitic anhydride and maleic anhydride are put into the reactor, and the reactor is kept at 170-180° C. for 1 hour;

[0027] (4) Put the mixture in t...

Embodiment 3

[0029] A cardanol modified water-based insulating varnish, made of the following raw materials in parts by weight: cardanol 20, isophthalic acid 21, trimethylolpropane 5, neopentyl glycol 18, pyromellitic anhydride 9, cis Butenedioic anhydride 9, methyl etherified amino resin 16, dimethylethanolamine 10, ethylene glycol butyl ether 17, water-based dispersant 1.

[0030] The model of the water-based dispersant is BYK021.

[0031] The preparation method comprises the following steps:

[0032] (1) Put cardanol, trimethylolpropane, isophthalic acid, and neopentyl glycol into the reactor together, and start stirring after the reactor is heated to 120° C.;

[0033] (2) The temperature of the reaction kettle is raised to 160-210° C., and the temperature is kept until the acid value of the mixture is less than 35;

[0034] (3) Pyromellitic anhydride and maleic anhydride are put into the reactor, and the reactor is kept at 170-180° C. for 1 hour;

[0035] (4) Put the mixture in the ...

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PUM

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Abstract

The invention discloses cardanol modified waterborne insulating varnish and a preparation method thereof. The cardanol modified waterborne insulating varnish is prepared from raw materials in parts by weight as follows: 14-20 parts of cardanol, 17-21 parts of isophthalic acid, 9-15 parts of trimethylolpropane, 12-18 parts of neopentyl glycol, 7-9 parts of pyromellitic dianhydride, 7-9 parts of maleic anhydride, 12-16 parts of methylated amino resin, 7-10 parts of dimethylethanolamine, 16-17 parts of 2-butoxyethanol and 0.1-1 part of a water-based dispersing agent. Use of toluene, dimethylbenzene, styrene and solvent oil which are taken as a solvent is avoided, the production cost is reduced, environmental pollution is reduced, health of workers is guaranteed, and the raw materials such as cardanol and the like are widely sourced, and the waterborne insulating varnish has the advantages of low cost and simple production technology; meanwhile, water is taken as the solvent, production is low-carbon, and the waterborne insulating varnish has the advantages that the varnish is energy-saving, environmentally friendly and safe to transport, has low risk and has no harm to a human body.

Description

technical field [0001] The invention belongs to the technical field of insulating varnish, and relates to a cardanol-modified water-based insulating varnish and a preparation method thereof. Background technique [0002] Insulating varnish is generally used to impregnate motors and electrical coils to fill the gaps and micropores in the insulation system, and to form a continuous paint film on the surface of the impregnated object, and to bond the coils into a solid whole, effectively improving the integrity of the insulation system. performance, thermal conductivity, moisture resistance, dielectric strength and mechanical strength; however, the existing insulating varnishes are made with toluene, xylene, styrene, and mineral spirits as solvents, so the cost of the insulating varnish made is relatively high. The smell is strong during use, which will damage the health of workers and cause serious environmental pollution; and the insulating varnish belongs to dangerous goods,...

Claims

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Application Information

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IPC IPC(8): C09D167/02C09D5/25C09D7/00C08G63/676
CPCC08G63/676C09D7/20C09D167/02C08L61/32
Inventor 徐劼周耀伟董旻王关全
Owner JIANGXING JIASHENG INSULATION MATERIAL CO LTD
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