60 Co-γ射线辐射聚合制备含硅聚合物及其陶瓷转化研究
Preparation of Silicon-Containing Polymer Synthesized by 60 Co-γ Rays Radiation and Research on its Ceramic Transformation
刘思阳 1陈屿恒 1王静霞 1倪茂君 1杜浩田 1先丽 1张婧 1彭朝荣1
作者信息
- 1. 四川省原子能研究院,成都 610101
- 折叠
摘要
采用γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)的乙醇溶液在60 Co-γ射线作用下进行辐射聚合,探讨了辐射剂量对聚合反应程度和产物分子量的影响,进一步研究了聚合产物的陶瓷化性能和裂解产物结构.结果表明,当辐射剂量为 40 kGy时,KH570 的聚合程度最高,制得的含硅聚合物分子量达到38.7×104,多分散系数为8.24.含硅聚合物具有良好的水解活性,其固化树脂在氮气氛围下经1 000℃裂解,残余质量分数为38.8%.裂解产物为具有明显光泽的纯黑色Si—O—C无定型陶瓷,其硅、氧和碳元素的含量分别为40.05%、43.65%和16.30%.
Abstract
Polymers containing active silane groups were synthesized by 60 Co-γ rays radiation polymerization from the solu-tion of γ-methacryloxypropyltrimethoxysilane(KH570)/ethanol.The effect of radiation dosage on the polymerization and the mo-lecular weight of the product was investigated,and the ceramic properties and cleavage structure of the product were further stud-ied.The results indicate that KH570 has the highest polymerization degree at the radiation of 40 kGy with the molecular weight of 38.7×104,the polydispersity index is 8.24.The silicon-containing polymer exhibits good hydrolytic activity.When its cured res-in is pyrolyzed at 1 000℃ under a nitrogen atmosphere,the residual mass fraction is 38.8％.The pyrolysis product is a glossy,pure black amorphous ceramic containing Si—O—C bonds.X-ray photoelectron spectroscopy analysis reveals that the mass frac-tions of Si,O and C are 40.05％,43.65％,and 16.30％,respectively.
关键词
辐射聚合/水解缩聚/陶瓷转化/硅烷Key words
radiation polymerization/hydrolytic polycondensation/ceramic transformation/silane引用本文复制引用
基金项目
&&(2022JDRC0024)
四川省省级科研院所基本科研业务(2024JDKY0003)
出版年
2024
NETL
NSTL
万方数据