摘要
用热分析法研究了4种硅氧烷的有机硅含量、甲基丙烯酸甲酯(MMA)、固化时间等因素对硅氧烷丙烯酸酯(硅丙)微乳液共聚物胶膜热性能的影响。结果表明,当硅氧烷质量分数为2%时,硅氧烷种类对共聚物胶膜Tg的影响不大,Tg随硅氧烷含量的升高而降低;当硅氧烷质量分数由0升至15%,400℃胶膜的残留物由016%提高到967%;MMA的加入大大提高了胶膜的热稳定性,以MMA质量分数为3%参与共聚,胶膜最大热分解温度提高了567℃。
The thermal properties of four siloxane acrylate copolymer microemulsions film were investigated by thermal methods as the function of siloxane content, presence of MMA and curing time. The results show that the difference of four siloxanes only slightly affects the T g of the films when the siloxane content is 2%, but the T g decreases with the increase of siloxane content. The residues of the films by heating at 400 ℃ increase from 0 16% to 9 67% with the change of the mass fraction of siloxane from 0 to 15%. Maximum decomposition temperature has increased by 56 7 ℃ when 3% MAA(mass fraction) is present in the copolymerization process, which indicates that carboxyl monomer greatly enhances the thermal stability of the films.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第1期79-82,共4页
Chinese Journal of Applied Chemistry
基金
广东省科委重点攻关项目(2KM06202S)
广州市高新技术(2000 Z 086 01)资助项目
关键词
硅氧烷
丙烯酸酯
微乳液热分析
siloxane,acrylate,microemulsion,thermal analysis
