纳米SiO_2/水性丙烯酸树脂复合材料的制备及工艺研究  

Preparation of Nano-Scale Silicane Dioxide-Waterborne Acrylate Resin Hybrid Materials and Study on Its Process

作　　者：陈鹏[1] 朱传方[1] 

机构地区：[1]武汉华中师范大学化学学院,武汉430079

出　　处：《现代涂料与涂装》2008年第3期1-3,10,共4页Modern Paint & Finishing

基　　金：湖北省自然科学基金项目;基金号为2006ABA174

摘　　要：以甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸为原料,纳米SiO 2为改性剂,通过原位聚合法和共混法制备了水性丙烯酸树脂纳米复合材料。研究了纳米粒子的加入量对树脂硬度、拉伸强度、断裂伸长率、耐候性、热稳定性的影响,利用IR、TEM、TG等测试技术对纳米SiO 2/水性丙烯酸树脂进行了表征。试验结果表明:纳米SiO 2的加入使聚丙烯酸酯分子链之间增加了交联度,其力学性能有所提高;随着纳米SiO 2含量的上升,硬度和拉伸强度都有较大的增加,而吸水率和断裂伸长率相应减小。同时由原位聚合法制备的水性丙烯酸树脂纳米复合材料的热分解温度也要高于共混法制备的水性丙烯酸树脂纳米复合材料。Nano- scale silicane dioxide- waterborne acrylate resin hybrid materials is prepared by in- situ polymerization and blending polymerization with methyl methacrylate, butyl acrylate, acrylic acid as raw materials and nano - scale silicane dioxide as modifier. The influence of the amount of nano particles to the hardness, tensile strength, elongation at break, weatherability and thermal stability of the resin is studied. The given resin is characterized by IR, TEM, TG and et al. The test results show that the degree of crosslinking among polyacrylate moleculars increases by adding nano - scale silicane dioxide, therefore, the mechanical performances thereof increase; the hardness and tensile strength of the resin are improved largely with the amount of nano silicate dioxide increases, but its water absorption rate and elongation at break decrease. It is also proved that the thermal decomposition temperature of nano - scale silicane dioxide- waterborne acrylate resin hybrid materials from in situ polymerization process is higher than that of hybrid materials from blending polymerization process.

关 键 词：纳米SIO2 水性丙烯酸树脂 原位聚合 共混聚合 改性 

分 类 号：TQ637[化学工程—精细化工]