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摘要
为提高酚醛树脂(PF)的耐热性和韧性,拓宽其应用范围,采用环氧树脂(EP)和纳米二氧化硅(SiO2)对酚醛树脂进行改性,研究环氧树脂和纳米粒子用量对酚醛树脂综合性能的影响。测试结果综合分析表明,在环氧树脂用量为20%(wt,质量分数),KH560用量为20%(wt,质量分数),纳米SiO2用量为1%(wt,质量分数)条件下,环氧/纳米SiO2改性酚醛树脂复合材料的聚合时间和软化点得到提高,热分解温度达到416.2℃,冲击强度达到7.49kJ/m2,具有较好的性能。
Abstract
In order to broaden the application range and improve the heat resistance and toughness of phenolic resin (PF),phenolic resin was modified with epoxy resin (EP) and nano-silica and studied the effects of epoxy resin and nano-particle dosage on the properties of phenolic resin.The comprehensive analysis of the test results showed that under the conditions of 20wt% epoxy resin,20wt% KH560 and 1wt% nano-SiO2,the polymerization time and softening point of epoxy/nano-SiO2 modified phenolic resin composites were improved.The thermal decomposition temperature reached 416.2℃,and the impact strength reached 7.49kJ/m2,which presented good performance.
关键词
环氧树脂
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纳米二氧化硅
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酚醛树脂
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耐热性
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冲击强度
Key words
epoxy resin
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nano-SiO2
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phenolic resin
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heat resistance
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impact strength
环氧改性酚醛树脂纳米复合材料的制备及性能研究[J].
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基金资助
国家高技术“863”研究发展计划,车用超耐磨纳米复合材料的规模化制备关键技术及示范应用(2015AA0300649)
