二氧化钛与NR的相互作用研究  

Interactions between titanium dioxide and NR

作　　者：张士齐[1] 吉庆敏[2] 贾红兵[1] 

机构地区：[1]南京理工大学非金属材料系,江苏南京210094 [2]筑波大学,日本筑波3050053

出　　处：《橡胶工业》2004年第5期271-273,共3页China Rubber Industry

基　　金：国家自然科学基金资助项目 (2 96740 13 )

摘　　要：研究普通和纳米二氧化钛与NR的相互作用。结果表明 ,二氧化钛与NR之间无化学作用 ,且对硫化体系与NR的化学作用产生屏蔽效应。二氧化钛的屏蔽效应、物理作用及补强作用均与其比表面积和吸油值呈正相关 ,与其粒径和 pH值呈负相关。加入偶联剂NDZ 10 1,可使纳米二氧化钛与NR的相互作用从全部是物理作用变为以化学作用为主 (占 75 7% )、物理作用为辅 (占 2 4 3 % ) ,填充NR硫化胶的拉伸强度约提高 1倍。The interactions between common titanium dioxide or nano-titanium dioxide and NR were investigated.The results showed that the titanium dioxide didn’t react chemically with NR and had a shielding effect on the chemical reaction between curing system and NR;the shielding effect,physical action and reinforcement of titanium dioxide were directly proportional to its specific surface area and oil factor,and inversely proportional to its particle size and pH value;and the chemical action accounted for 75.7% of the whole interaction between nano-titanium dioxide and NR by adding coupling agent NDZ-101 resulting in the increase of tensile strength for NR vulcanizate by 100%.

关 键 词：二氧化钛 NR 拉伸强度 交联密度 补强作用 

分 类 号：TQ33038[化学工程—橡胶工业] TQ332