纳米二氧化硅在外墙涂料中的改性研究  

Study on modification of exterior wall coating by nano-SiO_2

作　　者：张书弟[1] 杨国生[1] 张发余[1] 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110168

出　　处：《电镀与涂饰》2009年第5期57-59,共3页Electroplating & Finishing

摘　　要：在传统的建筑用外墙涂料中加入纳米SiO2得到纳米涂料，比较了加入纳米SiO2前、后涂料涂膜的性能。结果表明，涂料中纳米SiO2的最佳用量为0．3～1．0g，在此用量内，所得纳米涂料的稳定性、流平性均有所提高；涂膜的耐洗刷性为原来的2倍，耐碱性从原来的48h无异常增强为7d无异常，耐老化时间从之前的500h延长至1000h。A nano-coating material was prepared by adding nano-SiO2 to a traditional exterior wall paint used in construction. The performances of the coatings before and after the addition of nano-SiO2 were compared. The results showed that the optimal dosage of the nano-SiO2 is 0.3-1.0 g, in which the stability and leveling of the nano-paint are improved. The scrub resistance of the film is twice that of the traditional coating, the alkali resistance is increased from 48 h to 7 d without abnormality, and the aging resistance is prolonged from 500 h to 1 000 h.

关 键 词：外墙涂料 二氧化硅 纳米颗粒 改性 耐候性 

分 类 号：TQ630.44[化学工程—精细化工]