A kind of VPI impregnated resin for environment-friendly wind power generator and preparation method thereof
A technology for impregnating wind power generators and resins, which is applied to epoxy resin coatings, circuits, electrical components, etc. It can solve the problems of large curing volatiles, low bonding strength, and large dielectric loss, and achieve small curing volatiles and mechanical The effect of high strength and low dielectric loss
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Embodiment 1
[0037] In the present embodiment, the formula of environment-friendly type wind power generator VPI impregnated resin is as follows:
[0038] The heat-resistant bicyclic unsaturated polyester is composed of a molar ratio of dicyclopentadiene:maleic anhydride:neopentyl glycol:terephthalic acid:fumaric acid:methylpropanediol=0.6:0.5:2.3:1.0:1.0: Various monomers of 0.6 are prepared by polycondensation reaction.
[0039] The heat-resistant bicyclic unsaturated polyester system is obtained by mixing the heat-resistant bicyclic unsaturated polyester prepared above with trimethylolpropane diallyl ester (TMPTA) at a mass ratio of 6:4.
[0040] The modified epoxy resin is obtained by adding unsaturated polyester and epoxy resin (bisphenol A type epoxy resin) in a mass ratio of 10:100 and then adding them.
[0041] The unsaturated polyester is composed of various monomers with a molar ratio of phthalic anhydride: neopentyl glycol: diethylene glycol: benzoic acid: dimethylol propionic ...
Embodiment 2
[0046] The formula of the environment-friendly wind power generator of this example VPI impregnated resin is:
[0047] 50 grams of heat-resistant bicyclic unsaturated polyester, 30 grams of modified epoxy resin, 1.4 grams of benzoyl peroxide (BPO) as the initiator, 10 grams of phthalic acid diacrylate (DAP) as the crosslinking agent, and 10 grams of curing agent It is 5 grams of tung oil anhydride and 0.6 g of accelerator aluminum acetylacetonate.
[0048] After the above-mentioned components are uniformly mixed according to the formula, and then mixed with other components uniformly according to the formula, the environment-friendly VPI impregnated resin for wind power generators is obtained. When the impregnating resin is used, it should firstly be cured at 140-150°C for 4-6 hours, and then be cured at 170-180°C for 8-10 hours to form a film.
Embodiment 3
[0050] The formula of the environment-friendly wind power generator of this example VPI impregnated resin is:
[0051] 50 grams of heat-resistant bicyclic unsaturated polyester, 30 grams of modified epoxy resin, 1.6 grams of benzoyl peroxide (BPO) as the initiator, 10 grams of dodecyl allyl ester as the crosslinking agent, and 10 grams of phthalate 5 grams of formic acid diacrylate (DAP), 3 grams of phenylimidazole as a curing agent, and 0.6 g of an accelerator aluminum acetylacetonate.
[0052] After the above-mentioned components are uniformly mixed according to the formula, and then mixed with other components uniformly according to the formula, the environment-friendly VPI impregnated resin for wind power generators is obtained. When the impregnating resin is used, it should firstly be cured at 140-150°C for 4-6 hours, and then be cured at 170-180°C for 8-10 hours to form a film.
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