| 三向正交碳纤维增强纳米碳化硅生物复合材料的制备和力学性能 |
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| 引用本文： | 蒋云,陈照峰,朱建勋.三向正交碳纤维增强纳米碳化硅生物复合材料的制备和力学性能[J].复合材料学报,2008,25(6):97-101. |
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| 作者姓名： | 蒋云 陈照峰 朱建勋 |
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| 作者单位： | 1. 中材科技股份有限公司, 南京 210012;2. 南京航空航天大学 材料科学与技术学院, 南京 210016 |
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| 基金项目： | 十五国防先进材料重点支助项目（MKPT-01-067ZD） |
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| 摘 要： | 碳纤维增强的纳米碳化硅陶瓷基复合材料力学性能优良，且具有一定的生物相容性，因此可作为一种新型的可取代钛合金的全尺寸整体人工骨骼。研究了具有三向正交结构的T300和M30碳纤维预制体对C/SiC复合材料制备过程和抗弯强度的影响规律。以聚碳硅烷为先驱体，以二乙烯基苯为溶剂和交连剂，采用聚合物浸渍热解法制备了C/SiC复合材料，采用阿基米德排水法测量其密度和气孔率，采用三点抗弯法测量其抗弯强度。M30 C/SiC抗弯强度比T300 C/SiC高6.7％，表明碳纤维弹性模量对复合材料基体开裂强度有显著影响，并通过增加纤维径向强度以及承担载荷的比例提高了复合材料的断裂强度。
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| 关 键 词： | 三向正交 碳纤维 C/SiC复合材料 抗弯强度 |
| 收稿时间： | 2008-03-06 |
| 修稿时间： | 2008-05-20 |
Preparation and mechanical property of nanometer silicon carbide biological composites reinforced by 3D orthogonal carbon fibers |
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| JIANG Yun,CHEN Zhaofeng,ZHU Jianxun.Preparation and mechanical property of nanometer silicon carbide biological composites reinforced by 3D orthogonal carbon fibers[J].Acta Materiae Compositae Sinica,2008,25(6):97-101. |
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| Authors: | JIANG Yun CHEN Zhaofeng ZHU Jianxun |
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| Affiliation: | 1. Sinoma Science &;Technology Co., Ltd., Nanjing 210012, China;2. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | Nano silicon carbide composites reinforced by carbon fibers have excellent mechanical property and biocompatibility，and can be used as a full scale human skeleton to take the place of titanium alloy. The purpose of this paper is to investigate the effects of 3D orthogonal plaiting textures of T300 and M30 carbon fibers on the preparation process and flexural strength. C/SiC composites were prepared by polymer infiltration pyrolysis using polycarbosilane as preceramic and divinylbenzene as solvent. The density and porosity of C/SiC composites were measured by the Archimedes method. The flexural strength was tested by the method of three points bending. The flexural strength of M30 C/SiC composites is about 6.7% greater than that of T300 C/SiC composites. The results indicate that the cracking strength of C/SiC composites is dramatically affected by the elastic modulus of carbon fibers. High flexural strength of M30 C/SiC composites resulted from the high radial strength and high load bearing ratio of fiber to matrix，which all resulted from the higher elastic modulus of M30 than that of T300 carbon fibers. |
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| Keywords: | 3D orthogonal carbon fibers C/SiC composites flexural strength |
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