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A kind of halogen-free flame-retardant heat-conducting insulating varnish and preparation method thereof

A technology of heat conduction insulation and insulation treatment, applied in the direction of polyester coatings, coatings, etc., can solve the problems of high temperature loss, poor thermal conductivity, halogen-free flame retardant, etc., to achieve fast curing speed, high thermal conductivity, thermal conductivity and flame retardant Effect

Active Publication Date: 2016-09-07
清远贝特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of flame-retardant heat-conducting insulating varnish, which overcomes the problems of fast loss at high temperature, poor thermal conductivity and halogen-free flame retardant compared with common insulating varnishes.

Method used

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  • A kind of halogen-free flame-retardant heat-conducting insulating varnish and preparation method thereof
  • A kind of halogen-free flame-retardant heat-conducting insulating varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 (by weight percentage):

[0031] Heat-resistant unsaturated polyester resin: 45%

[0032] Styrene: 20%

[0033] Alumina: 20%

[0034] Magnesium hydroxide: 5%

[0035] DOPO: 10%

[0036] Hydroquinone: 0.05%

[0037] p-Benzoquinone: 0.03%

[0038] BYK 9076 2%

[0039] BYK 333: 0.2%

[0040] Defom 3100: 0.1%

[0041] Cobalt naphthenate: 0.05%

[0042] tert-butyl peroxybenzoate: 2%

Embodiment 2

[0043] Embodiment 2 (by weight percentage):

[0044] Heat-resistant unsaturated polyester resin: 34%

[0045] Vinyltoluene: 23%

[0046] Silica powder: 18%

[0047] Aluminum hydroxide: 18%

[0048] Triphenyl phosphate: 7%

[0049] Hydroquinone: 0.05%

[0050] o-Toluene Hydroquinone: 0.03%

[0051] BYK 220S: 2%

[0052] TEGO Flow 370: 0.2%

[0053] BYK065: 0.1%

[0054] Cobalt isooctanoate: 0.05%

[0055] Di-tert-butylperoxycyclohexane: 2%

Embodiment 3

[0056] Embodiment 3 (by weight percentage):

[0057] Heat-resistant unsaturated polyester resin: 30%

[0058] Diallyl phthalate: 20%

[0059] Boron Nitride: 15%

[0060] Magnesium hydroxide: 20%

[0061] Hydroquinone: 0.08%

[0062] Disponer 931 2%

[0063] BYK 315: 0.2%

[0064] TEGO Rad 2500: 0.1%

[0065] Manganese naphthenate: 0.08%

[0066] Di-tert-butyl peroxide: 2%

[0067] Example effect

[0068] After the above flame-retardant and heat-conducting insulating varnish is cured by heating, its properties are shown in Table 1:

[0069] Table 1. Properties of flame retardant and thermally conductive insulating varnishes

[0070]

[0071]The tests of various indicators are carried out in accordance with the provisions of GB / T 15023-1994 "Test Methods for Electrical Insulation Solvent-free Polymerizable Resin Compounds".

[0072] Volume resistivity, electric strength, thermal conductivity and flame retardant grade: the sample curing condition is 120±2°C, 0.5h pl...

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Abstract

The invention belongs to the technical field of insulation warmish. The halogen-free flame retardant heat conduction insulation warmish is characterized by using a high-conduction insulation filler and a flame retardant agent with high flame retardance as modifying agents, the modifying agent is filled in heat resistant unsaturated polyester resin, a reactive diluent, a peroxide initiator and an additive are added, and are uniformly mixed to obtain the flame retardant heat conduction insulation warmish which is cured at a temperature of 100-180 DEG C. The flame retardant heat conduction insulation warmish is applied to motor insulation, and has the advantages of high heat conduction property, good flame retardance, excellent salt mist property, good insulation property, long storage period, high curing speed and the like. The flame retardant heat conduction insulation warmish comprises the components in percent by weight of 30-50 percent of heat-resistant unsaturated polyester resin, 10-30 percent of diluting agent, 15-30 percent of heat conduction filler, 15-20 percent of fire retardant, 1-2 percent of initiator and 0.2-1 percent of additive. The halogen-free flame retardant heat conduction insulation warmish formed after curing has a heat conduction coefficient of exceeding of 0.03540W / Mk and fire resistance of reaching ULV (Ultra Low Voltage)-0 level.

Description

technical field [0001] The invention belongs to the technical field of insulating materials, in particular to a flame-retardant and heat-conducting insulating impregnating varnish. Background technique [0002] At present, unsaturated polyester insulating varnish is widely used. It is polymerized from glycol, saturated dibasic acid and unsaturated dibasic acid, and then diluted with styrene, diallyl phthalate or acrylate. made. Unsaturated polyester insulating varnish has low viscosity and good penetration performance. Add peroxide initiators such as tert-butyl peroxybenzoate and dicumyl peroxide to the insulating varnish, and the curing temperature is low, and can be cured at 100-150°C. The unsaturated polyester insulating varnish has a long storage period at room temperature, slow viscosity growth, and less solvent volatilization during the curing process, which plays a role in saving energy, reducing consumption, and reducing environmental pollution. [0003] Unsaturat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D5/25C09D7/12
Inventor 张杰元刘宗旺陈政标
Owner 清远贝特新材料有限公司