原位聚合纳米SiO2杂化酚醛及其耐热性
Journal of Guizhou University of Technology(Natural Science Edition)（2007）
Abstract
以原位法制备了SiO2/杂化酚醛复合材料.采用热分析系统,对SiO2/杂化酚醛进行了DSC/TG曲线研究,展示了它的热解动态.结果表明其耐热性均显著优于普通的酚醛树脂,纳米SiO2/杂化酚醛的初始热分解温度为450℃,当热分解温度≥700℃时,残碳率≥60%,用此复合材料作为基体树脂制备的无石棉编织型制动带,低温摩擦系数达0.40以上,高温摩擦系数可达0.25以上,且摩擦系数恢复性良好.
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Key words
thermal analysis,nano-SiO2,boron phenolics,heat-resistance
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