改性聚甲基硅氧烷及其在PU涂料中抗划伤性能探讨  

Modified polymethylsiloxane resin and the scratch resistance property in PU coatings

作　　者：陈兵[1] 容敏智[1] 

机构地区：[1]中山大学化学与化工学院

出　　处：《中国涂料》2007年第10期41-43,62,共3页China Coatings

摘　　要：采用羟基树脂通过TDI对聚甲基硅氧烷进行化学改性,用红外光谱、热重分析等手段对改性产物进行了表征。探讨了反应温度对制备改性产物的影响。确定了改性产物在双组分PU涂料中的抗划伤性能。结果表明:在涂膜中,改性产物的抗划伤性能较改性前有明显提高,其它相关性能也有所改善。Hydroxyl resin is used to modify polymethylsiloxane through the action of TDI and the products are characterized by IR and TGA. The influence of reaction temperature on products is discussed. Scratch resistance of modified products in 2k PU paint is determined,showing that the scratch resistance of modified products in paint film is obviously improved and other relative properties are also improved.

关 键 词：羟基树脂 TDI 聚甲基硅氧烷 抗划伤性能 PU涂料 

分 类 号：TQ630.4[化学工程—精细化工]