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先制得PVP非共价功能化的多壁碳纳米管(MWNTs),而后利用电子束辐射固化制备PVP功能化的MWNTs(PVP-MWNTs)/环氧树脂复合材料。对PVP-MWNTs进行FTIR光谱表征及热重分析,表明碳纳米管表面有PVP包覆,PVP功能化的MWNTs的碳纳米管在环氧树脂中有良好的分散性。对电子束固化的复合材料进行拉伸性能测试,1.0wt%PVP-MWNTs/环氧树脂复合材料的拉伸模量较纯环氧树脂提高25%。动态力学性能分析表明添加PVP-MWNTs提高了环氧基体的储能模量。
Firstly, PVP non-covalently functionalized multi-walled carbon nanotubes (MWNTs) were prepared and then PVP-functionalized MWNTs (PVP-MWNTs) / epoxy composites were cured by electron beam radiation. FTIR spectroscopy and thermogravimetric analysis of PVP-MWNTs showed that PVP was coated on the surface of carbon nanotubes, and the dispersion of PVP-functionalized MWNTs in epoxy resin was good. Tensile properties of electron beam cured composites were tested. The tensile modulus of 1.0 wt% PVP-MWNTs / epoxy composites was 25% higher than pure epoxy. Dynamic mechanical properties analysis showed that the addition of PVP-MWNTs increased the storage modulus of the epoxy matrix.