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优良水性环氧涂料哪家比较好

发布时间:2019-01-05 18:25:01   作者:水性环氧地坪漆生产厂家

韧性好与热固性酚醛树胶涂料相比较,环氧涂料含芳环而结实又硬,有醚键便于分子链的旋转,具有一定的韧性,而不家酚醛树胶很脆(因其交联间距比环氧树胶短).环氧树胶交联间距长,水性环氧涂料便于内旋转,环氧树胶的分子量越大则交联间距越长.环氧树胶对湿面有一定的润湿力,尤其在运用聚酰胺树胶作固化剂时,可制成水下动工涂料,能挤兑物体表面的水而涂布,可用于水下结构的突击修理和水下结构的防腐蚀动工.环氧树胶本身的分子量不高,能与各种固化剂合适制造无溶剂、高固体分粉末涂猜想到水性涂料,符合环保要求,并能得到厚膜涂层.环氧树胶含有环氧基及羟基两种活泼基团,能与多元胺、聚酰胺树胶、酚醛树胶、氨基树胶、多异氰酸酯等合适,制成多种涂料,既可常温干燥,也可高温烘烤,以称心不同的动工要求.环氧树胶具有良好的电绝缘性质,可用于浇注严密封闭、浸渍漆等.环氧涂料具有很多有点,但也存在不充足之处,其光老化性差.环氧树胶中含有芳香醚键,漆膜经日光(紫外光)照射后易降解断链,所以户外耐候性较差.故一般的双酚A系环氧树胶不耐户外日晒,漆膜易失光变色,之后粉化,不舒服宜用作户外的面漆.

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