纳米SiO_2表面处理及其对聚硫密封剂性能的影响  

Surface modification of nano-silica powder and its influence on properties of polysulfide sealants

作　　者：冯志力[1] 吴松华[1] 孙超[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《粘接》2013年第8期39-41,38,共4页Adhesion

摘　　要：用硅烷偶联剂KH-590对纳米二氧化硅表面进行改性。考查了偶联剂用量、改性温度及时间对改性效果的影响。确定最佳改性条件为:硅烷偶联剂KH-590质量分数为5%,反应温度70℃,反应时间4h。并将改性后纳米二氧化硅用于聚硫密封剂中,提高了聚硫密封剂的耐老化和粘接性能。The nano-silica surface was modified using silane coupling agent KH-590.The effect of modifier amount,modification temperature and time on the modification effect was investigated.The optimal modification conditions obtained were as follows：KH-590 content is 5%,reaction temperature is 70~（2 and reaction time is 4 h.And the results indicated that the aging and bonding properties are improved by using modified nano-silica in the polysulfide sealants

关 键 词：纳米二氧化硅 硅烷偶联剂 表面改性 聚硫密封剂 

分 类 号：TQ436.6[化学工程]