摘要
研究了几种不同的正烷醇对二氧化硅超细颗粒进行改性时,改性剂的链长、用量、反应温度、反应时间等条件对改性后二氧化硅的疏水性的影响,找出了改性反应的最佳条件,并对其影响原因做了分析。研究结果表明,醇酯法对二氧化硅超细颗粒进行改性时的最佳条件是: 正烷醇的碳链长度大于8,改性剂用量10%~15%,反应温度225℃,反应时间3 H。
When modified with normal alcohols, the hydrophobicity of silica is influenced by many factors, including the chain length of normal alcohols, the amount of alcohols, reaction temperature and time. The research results show that the optimal conditions are the chain length of normal alcohols Cs, the amount of alcohol between 10-15wt%, the temperature of 225 ℃ and the reaction time of 3h.
出处
《安徽理工大学学报(自然科学版)》
CAS
2005年第4期78-80,共3页
Journal of Anhui University of Science and Technology:Natural Science
关键词
表面改性
二氧化硅
疏水性
正烷醇
surface modification, silica
hydrophobicity
normal alcohol