摘要
以正硅酸乙酯(TEOS)制备SiO2溶胶,γ-甲基丙烯酰氧丙基三甲氧基硅烷(KH-570)为硅烷偶联剂,通过溶胶-凝胶法制备聚氨酯丙烯酸酯/环氧丙烯酸酯/二氧化硅杂化材料。采用场发射扫描电镜(FESEM)以及热失重方法进行分析。结果表明,TEOS与(PUA+EA)质量比为0.4∶1时,树脂中二氧化硅颗粒粒径最小,大约在80 nm～100 nm,分散均匀,当配比达到0.6∶1时,二氧化硅出现团聚现象。杂化材料热失重温度达到350℃,热分解温度为143.8℃,比纯树脂体系提高了将近1倍。
The 3- （ trimethoxysily lyurethane acrylate/epoxy acrylate/SiO2 hybrid materials were prepared by sol-gel method from propyl methacrylate （KH-570） and SiO2 sol produced by tetraethoxysilane （TEOS）. The results of field emission scanning electron microscope （FESEM） indicate that the SiO2 particles are dispersed uniformly in resin matrix. The particles are the smallest with the mass ratios of TEOS： （PUA ＋ EA） = 0.4： 1. And the diameter is approximately 80nm-100nm. when the ratios reach 0.6：1, SiO2 particles are agglonmrated. Meanwhile, the thermal analysis illuminates that the hybrid materials begin to lose mass at 350 ℃ and the initial decomposition temperature is 143.8 ℃, which is about twice than that of the pure resin with the mass ratios of TEOS ： （PUA ＋ EA） =0.4：1.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第4期121-124,共4页
Polymer Materials Science & Engineering
