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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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vgcf的表面处理对vgcf/smpu复合材料力学和热学性能的影响
Keywords: 复合材料,vgcf/smpu复合材料,表面处理,气相生长碳纤维,形状记忆聚氨酯
Abstract:
？用二步法对气相生长碳纤维(vgcf)进行表面改性处理,然后用溶液混合法制备了vgcf/形状记忆聚氨酯(smpu)复合材料.用扫描电镜观察分析了vgcf在smpu基体中的分散性以及与基体的界面结合情况,研究了复合材料的力学性能和热学性能.结果表明：与未经二步法处理的vgcf相比,用二步法表面处理使vgcf在基体中的分散性及与基体的界面结合能力得到较大的提高,且使其对复合材料的拉伸强度及拉伸弹性模量的增强效果更为明显;虽然smpu与vgcf复合后的断裂伸长率有所降低,但是与未处理的vgcf制备的复合材料相比,断裂伸长率有明显增大;表面处理的vgcf更有利于提高复合材料的热稳定性.
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