水性双组分丙烯酸木器涂料的配制与表征

摘要

以水性羟基丙烯酸为主要成膜物质，脂肪族异氰酸酯为交联剂，添加其它助剂制备了性能优良的水性双组分丙烯酸木器漆；研究了丙烯酸种类和不同的n（-NCO）∶n（-OH）对漆膜性能的影响，最佳的n（-NCO）∶n（-OH）＝1．3。这种双组分水性木器漆在常温下能够固化成膜。性能测试表明，该水性涂料具有良好的耐醇性、耐碱性、耐污染性、耐干热和耐湿热性，以及较高的硬度。最后，用FTIR对固化前后丙烯酸结构的改变进行了表征。%Hydroxyl-functional acrylic aqueous dispersion is the main film forming substance , aliphatic isocyanate is the curing agent, and some coating additives are contained in the formula.The performance of two-component wood coating is excel-lence.Acrylic types and -NCO/-OH molar ratio have influences on the performance of cured coating.The best -NCO/-OH molar ratio is 1.3.This two-component waterborne wood coating can cure at room temperature.The tests show that performance properties of cured coating, induding alcohol resistance, alkaline resistance, dry resistance, wet heat resist-ance, and pencil hardness, are excellence.The change of coating structure during the curing process was studied by using Fourier transform infrared ( FTIR) spectroscopy .