碳纳米管-玻璃纤维织物增强环氧复合材料的结构与性能

发布时间：2018-04-06 07:20

  本文选题：多壁碳纳米管　切入点：玻璃纤维织物　出处：《材料工程》2017年09期

【摘要】：通过物理沉积法和静电吸附法在玻璃纤维织物(GF)表面包覆多壁碳纳米管(MWCNTs),制备GF-d-CNTs和GF-a-CNTs两种多尺度增强体,采用真空灌注工艺制备MWCNTs-GF增强环氧复合材料。采用静态、动态力学法、扫描电镜、红外光谱等分析手段,对复合材料的拉伸、弯曲、层间剪切、黏弹性和微观组成结构表征。结果表明:MWCNTs包覆于GF表面形成"倒刺"结构,并通过啮合作用增强了复合材料界面的强度和树脂韧性,提高了复合材料的玻璃化温度(Tg)等;与纯GF复合材料相比,GF-d-CNTs复合材料的拉伸强度和模量分别提高14.5%和37.9%,弯曲强度和模量分别提高26.2%和36.6%,层间剪切强度提高31.5%;GF-a-CNTs复合材料的Tg提高了8.9℃。
[Abstract]:Two kinds of multi-scale reinforcements of GF-d-CNTs and GF-a-CNTs were prepared by coating multi-wall carbon nanotubes (MWCNTs) on the surface of glass fiber fabric by physical deposition and electrostatic adsorption. MWCNTs-GF reinforced epoxy composites were prepared by vacuum perfusion process.The tensile, bending, interlaminar shear, viscoelasticity and microstructure of the composites were characterized by static and dynamic mechanical methods, scanning electron microscopy and infrared spectroscopy.The results show that the "barbed" structure is formed in the surface of GF coated with w / MWCNTs, and the interfacial strength and resin toughness of the composites are enhanced by meshing, and the glass transition temperature (Tg) of the composites is increased.Compared with pure GF composites, the tensile strength and modulus of GF-d-CNTs composites were increased by 14.5% and 37.9%, respectively, the flexural strength and modulus were increased by 26.2% and 36.6%, and the interlaminar shear strength of GF-a-CNTs composites increased by 31.5% and 8.9 鈩，

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