Insulated electrical coil having enhanced oxidation resistant polymeric insulation composition
申请人:Siemens Westinghouse Power Corporation
公开号:US20030044605A1
公开(公告)日:2003-03-06
An insulated electrical coil is disclosed and is formed from a plurality of turns of coil, each having a cured body of resinous insulation applied to each turn of coil. The insulation is formed from a cured resinous composition of epoxy-anhydride resin that has been prereacted with an antioxidant oligomer selected from the group consisting of organophosphorus compounds, sterically-hindered alkylated phenolics, alkyl and aryl thio-esters, alkyl and aryl thio-phosphites, thiazoles, lactones, hydroxylamines, and maleimides.
本发明公开了一种绝缘线圈,它由多圈线圈组成,每圈线圈上都有一个树脂绝缘固化体。绝缘体由环氧酸酐树脂的固化树脂组合物形成,该树脂组合物已与抗氧化剂低聚物发生预反应,抗氧化剂低聚物选自有机磷化合物、立体受阻的烷基化酚、烷基和芳基硫代酯、烷基和芳基硫代磷酸酯、噻唑、内酯、羟胺和马来酰亚胺组成的组。