有机硅树脂耐高温改性方法及机理研究进展
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云南省基础研究计划青年项目(202101AU070012); 云南省教育厅科学研究基金(2021J0050)


Progress in Modification Methods and Mechanisms of Silicone Resins for High Temperature Resistance
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    摘要:

    有机硅树脂是一种性能优异的耐高温材料,在耐热领域具有广阔的应用前景。随着国防工业等的高速发展,传统的有机硅树脂热防护涂层难以满足当前发展的需要。因此,提高有机硅树脂的耐高温性具有极其重要的战略价值。文中从有机硅树脂的结构和特性出发,分析有机硅树脂的热稳定性机理及热降解机理。硅树脂的热降解主要来自于侧链降解、解链降解和重排降解。在此基础上,综述了侧链改性、主链改性、填料改性、封端、协同改性等方法对有机硅树脂耐热改性的研究进展,探讨了其优缺点,并展望了耐高温改性有机硅树脂未来的研究方向及应用前景。

    Abstract:

    Silicone resin, because of its high temperature resistance, has broad prospects in the field of heat resistant aspects. With the rapid development in defense and other industries recently, traditional silicone resin thermal protection coatings can hardly meet the needs of current requirements. Therefore, it is of great strategic value to improve the high temperature resistance of silicone resin. In this review, based on the structure of silicone resin, the thermal stability mechanisms and thermal degradation mechanisms of silicone resin were analyzed firstly. The thermal degradation of silicone resin mainly originates from radical reaction, back-biting reaction and scission and rearrangement. Therefore, various modification methods to improve the high-temperature resistance of silicone resin were developed correspondingly, including side-base modification, main chain modification, filler modification, end-blocked modification, and co-modification. The advantages and disadvantages of these modification methods were then discussed. At last, the emphasis and directions for future research of high-temperature resistant silicone resins were discussed.

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代广富, 裴勇兵, 褚俊涵, 罗 勇, 谢于辉, 谢德龙, 梅 毅.有机硅树脂耐高温改性方法及机理研究进展[J].高分子材料科学与工程,2022,38(3):174-182.

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  • 在线发布日期: 2022-06-14
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