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| Effects of surface treatment of VGCF on the mechanical and thermal properties of the VGCF/SMPU composites |
| FU Yaqin1; HAN Chunshao1; NI Qingqing2; ZHU Yaofeng 1; DING Yanjie1 |
1.Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education; Zhejiang Sci-Tech University; Hangzhou 310018
2.Dept. of Functional Machinery & Mechanics; Shinshu University; Ueda 386-8567; Japan |
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Cite this article:
FU Yaqin HAN Chunshao NI Qingqing ZHU Yaofeng DING Yanjie. Effects of surface treatment of VGCF on the mechanical and thermal properties of the VGCF/SMPU composites. Chin J Mater Res, 2009, 23(6): 572-576.
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Abstract Surface modification of vapor grown carbon fiber (VGCF) was performed with the two-step method. VGCF/shape memory polyurethane (SMPU) composites were prepared via a solutionmixing method thereafter. The dispersion of VGCF in SMPU and VGCF-matrix interfacial adhesion were observed through scanning electron microscope (SEM). Moreover, the mechanical and thermal properties of the VGCF/SMPU composites were investigated. The results show that the dispersion and interfacial adhesion for the two-step surface modified VGCF are greatly improved than that of the pristine VGCF; The composites prepared with two-step surface modified VGCF have much better tensile strength and modulus reinforcement than that with the pristine VGCF. The elongation at break of the composites are all reduced after compounding of VGCF and SMPU, while the surface modified VGCF reinforced composites show higher elongation at break comparing with the pristine VGCF reinforced composites; The two-step surface modified VGCF is propitious to improve the thermal stability of the composites comparing with the pristine VGCF.
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Received: 16 January 2009
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| Fund: Support by the Program for Changjiang Scholars and Innovative Research Team in University No.IRT0654. |
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