锆改性苯基硅树脂合成及高温热降解机理研究  

Synthesis and High-Temperature Thermal Degradation Mechanism Study of Zirconium-Modified Phenylsilicone Resins

作　　者：乔超逸 代广富 冯东[1,2,3] 谢于辉 吴枫 谢德龙 Qiao Chaoyi;Dai Guangfu;Feng Dong;Xie Yuhui;Wu Feng;Xie Delong(School of Chemical Engineering,Kunming University of Science and Technology,Kunming,Yunnan,650500;Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials,Kunming,Yunnan,650500;Yunnan International Joint Laboratory of Environmentally Friendly Polymers,Kunming,Yunnan,650500)

机构地区：[1]昆明理工大学化学工程学院,云南昆明650500 [2]云南省磷化工节能与新材料重点实验室,云南昆明650500 [3]云南省环境友好高分子国际联合实验室,云南昆明650500

出　　处：《现代塑料加工应用》2024年第6期1-4,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金(22268025)。

摘　　要：采用溶胶-凝胶法成功合成了Zr-O-Si结构的锆改性苯基有机硅树脂(ZSR),并深入探究了其在高温环境下的性能表现及机理。通过热重分析、傅立叶变换红外光谱、扫描电子显微镜和X射线衍射等多种表征手段的综合应用,发现Zr的引入显著提高了有机硅树脂的耐高温性能,其残余质量大幅增加。进一步的分析表明,Zr元素的作用机理可能包括形成致密的SiO_(2)-ZrO_(2)陶瓷相以及猝灭自由基,有效地维持了树脂结构的完整性。Zirconium-modified Phenyl organosilicon resin with a Zr-O-Si structured resin(ZSR)was successfully synthesized using the sol-gel method and its performance and mechanism in high-temperature environments were investigated.Through comprehensive characterization techniques such as thermogravimetric analysis,Fourier transform infrared spectroscopy,scanning electron microscopy,and X-ray diffraction,it was found that the introduction of Zr significantly improved the high-temperature resistance of the organic silicone resin,resulting in a substantial increase in residual mass.Further analysis revealed that the mechanism of Zr element may include the formation of dense SiO_(2)-ZrO_(2) ceramic phase and the quenching of free radicals,effectively maintaining the integrity of the resin structure.

关 键 词：锆改性 有机硅树脂 耐高温 缩合反应 降解机理 

分 类 号：TQ3[化学工程]