摘要
将硅烷偶联剂KH560改性的纳米二氧化硅(SiO_2)与甲基丙烯酸甲酯-甲基丙烯酸共聚物[P(MMA-coMAA)]乳液进行复配。采用红外光谱(FTIR)、热重(TG)、X射线衍射仪(XRD)、扫描电镜(SEM)对复合乳液的结构和性能进行了测定。结果表明,加入纳米SiO_2后使得P(MMA-co-MAA)的聚集态结构发生了改变,造成乳液自脆化形貌发生变化。主要表现为:随着纳米SiO_2含量的增加,脆片有变大的趋势,同时,收缩卷曲更加明显,提高了P(MMA-co-MAA)的自脆裂剥离性能。这种性能在去除设备表面的放射性污染的废物机械回收中更具备优势。
Modified nano-silica （ SiO2 ）/poly（ methyl methacrylate-co-methacrylic acid） [ P（ MMA-co- MAA ） ] composite emulsions were prepared, in which SiO2 was modified by 3- glycidoxypropyltrimethoxysilane. The structure and properties of composite emulsions were characterized by means of Fourier transform infrared spectroscopy （FTIR）, thermogravimetry （TG）, X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The results showed that the addition of modified nano-SiO2 changed the aggregation structure of P （ MMA-co-MAA）, resulting in an obvious change in morphology of emulsion self-embrittlement. With the increase of nano-silica content, the crisps became larger and displayed more obvious shrinkage, which promoted the self-embrittlement and stripping performance of P（MMA-co-MAA）. This performance has the advantage of removing radioactive waste from the surface of the equipment.
作者
郭耀楠
李银涛
刘星浩
龙春华
周元林
GUO Yao-nan LI Yin-tao(State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan , China School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2017年第10期1081-1086,共6页
Fine Chemicals
基金
国家自然科学基金资助项目(21107088)
四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地基金(14tdfk04)
四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地基金开放基金(14zxfk06)~~
