| 引用本文: | 刘静宇,陈朝辉,简科.聚硅氧烷先驱体转化制备2D Cf/Si-O-C材料.[J].国防科技大学学报,2006,28(5):30-34.[点击复制] |
| LIU Jingyu,CHEN Zhaohui,JIAN Ke.Study of 2D Cf/Si-O-C Fabricated via Polysiloxane Pyrolysis[J].Journal of National University of Defense Technology,2006,28(5):30-34[点击复制] |
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| 聚硅氧烷先驱体转化制备2D Cf/Si-O-C材料 |
| 刘静宇1, 陈朝辉2, 简科2 |
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(1.长沙大学 生物工程与环境科学系，湖南 长沙 410003;2.国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 以二维碳纤维布和廉价的聚硅氧烷为原料，采用先驱体转化工艺制备2D Cf/Si-O-C材料，对其力学性能进行了考察，并与以聚碳硅烷为先驱体制备的2D Cf/SiC材料在价格和性能方面进行了对比。实验表明，2D Cf/Si-O-C材料力学性能较2D Cf/SiC材料有所下降，但成本大大降低。2D Cf/Si-O-C材料弯曲强度达到157.9 MPa，断裂韧性达到8.4MPa?m1/2，剪切强度达到23.4MPa，并且在1400℃下能较好保持材料的力学性能。 |
| 关键词: 先驱体转化法 聚硅氧烷 2D Cf/Si-O-C材料 力学性能 |
| DOI： |
| 投稿日期：2006-05-10 |
| 基金项目:国家部委基金资助项目(51488030105ZS9504) |
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| Study of 2D Cf/Si-O-C Fabricated via Polysiloxane Pyrolysis |
| LIU Jingyu1, CHEN Zhaohui2, JIAN Ke2 |
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(1.Department of Bioengineering and Environmental Science, Changsha Univ.， Changsha 410003, China;2.College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073，China)
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| Abstract: |
| Carbon fiber cloth reinforced silicon oxycarbide (2D Cf/Si-O-C) composites were fabricated with cheap polysiloxane (PSO) and divinylbenzene (DVB) as precursors and carbon fiber cloth as reinforcements. The mechanical properties of 2D Cf/Si-O-C composites with polysiloxane as precursors were investigated and the difference of properties and cost between them and 2D Cf/SiC composites were also studied in the paper. The results show that the mechanical properties of 2D Cf/Si-O-C are decreased and the cost of them reduced greatly. The flexural strength, fracture toughness and shear strength reach 157.9MPa, 8.4MPa?m1/2 and 23.4MPa respectively. Such mechanical properties can be reserved up to 1400℃. |
| Keywords: precusor inflitration pyrolysis polysiloxane 2D Cf/Si-O-C composites mechanical properties |
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