摘要： 为提高涂料的屏蔽性能,本研究采用乙烯基三(β-甲氧基乙氧基)硅烷偶联剂对纳米SiO2表面进行改性,并用显微镜分析了SiO2在母液中的分散,应用自由膜静态浸泡法研究了水在涂层中的传输行为。结果表明:母液中乙烯基三(β-甲氧基乙氧基)硅烷偶联剂含量为3.5%以上时,纳米SiO2在母液中可以有效分散;当母液中偶联剂的含量为3.5%～4%时,水在涂层中的传输速率最低,涂层的屏蔽性能最佳,其防护性能最好。
关键词:
纳米SiO2,
硅烷偶联剂,
防护性能
Abstract: In order to increase shielding performance of the coating, vinyl tri(β-methoxyethoxy ) silane coupling was used for the surface modification of nanometer SiO2, and the microscope was used to analyze the SiO2, scattered in the mother liquor and the static immersion method was used to study the transporting behavior of water in coatings. The results showed that if vinyl tri(β-methoxyethoxy) silane coupling agent content was above 3. 5% in the mother liquid, nano SiO2 could be dispersed effectively. When the content of the counling agent was 3.5%-4%. the transmission rate of water was the lowest in the coating and the shielding performance of the coating was the best with its best protective performance.
Key words:
nano-SiO2,
silane coupling agent,
barrier property
朱华军, 张秀芝, 张 昕, 孔换明, 刘培培. 偶联剂含量对纳米SiO2/EP复合涂料防护性能的影响[J]. 涂料工业, 2012, 42(7): 53-55.
Zhu Huajun, Zhang Xiuzhi, Zhang Xin, Kong Huanming, Liu Peipei. Effects of Silane Coupling Agent Content on the Barrier Property of SiO2 /EP Coating[J]. Paint & Coatings Industry, 2012, 42(7): 53-55.