本文采用溶胶凝胶法成功制备了聚丙烯/乙丙橡胶/SiO2纳米复合材料。首先利用辐射方法对乙丙橡胶进行固相接枝γ-甲基丙烯酰氧丙基三甲氧基硅烷，然后通过溶胶凝胶法制备乙丙橡胶/SiO2母料，并成功制备了聚丙烯/乙丙橡胶/SiO2纳米复合材料。通过红外、SEM、DSC、力学性能等对复合材料性能进行了表征。结果表明，复合材料经过改性后，其断裂强度增长了12.7%、杨氏模量增长了33.7%、断裂伸长率增长了40.1%；纳米SiO2在介质中分散良好，聚丙烯/乙丙橡胶/SiO2纳米材料综合性能得到提高。
PP/ethylene-propylene rubber/SiO2 nanocomposites were successfully prepared by route of SiO2 sol in situ. First, the ethylene propylene rubber was grafted with KH570 by means of irradiation and EPR/SiO2 masterbatch was prepared by sol-gel process. Then PP/EPR/SiO2 nanocomposites were successfully prepared. Then the preparation technologies for these composites were studied, and characterizations were carried out, such as FTIR, SEM, DSC, mechanical properties and so on. The results showed that the tensile strength of the composite was increased by 12.7%, the young's modulus was increased by 33.7% and the elongation at break was increased by40.1%. The nano-SiO2 was dispersed well in composites and the organic-inorganic interfacial compatibility and chemical bonding were strong, obtaining good material performance.
2018,40(7): 154-157 收稿日期：2017-11-01
DOI：10.3404/j.issn.1672-7649.2018.07.030
分类号：TQ325
作者简介：张强(1971-),男,高级工程师,主要从事发射装置研究工作
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