| 导电功能集料碳纤维水泥基复合材料及其压敏性能 |
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| 引用本文： | 何永佳,吕林女,金舜,胡曙光.导电功能集料碳纤维水泥基复合材料及其压敏性能[J].功能材料,2011,42(11). |
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| 作者姓名： | 何永佳 吕林女 金舜 胡曙光 |
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| 作者单位： | 1. 武汉理工大学材料科学与工程学院,湖北武汉,430070
2. 武汉理工大学理学院,湖北武汉,430070 |
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| 基金项目： | 国家自然科学基金资助项目(50902106) |
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| 摘 要： | 利用石墨粉和粘土基质烧制成导电陶粒,与碳纤维共同组成复合导电相,制备得到导电功能集料碳纤维水泥基复合材料。采用Instron5882材料试验机,动态电阻应变仪和直流稳压电源测试系统研究了其压敏性,发现压应力对其电阻值有显著影响;从开始加载至破坏全过程电阻值变化表现出均匀下降、平衡和迅速上升3阶段;在低加载应力循环下材料电阻变化值与应力有良好相关性,高加载应力循环下因损伤裂纹的不可复原性而使电阻出现不可逆增加;加载速率对电阻变化也有影响,低加载应力时加载速率影响较小,高加载应力时影响较大。
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| 关 键 词： | 导电功能集料 碳纤维 水泥基复合材料 压敏性能 |
Conductive functional aggregate carbon fiber cement-based composite material and its pressure sensitivity |
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| HE Yong-jia,LV Lin-nv,JIN Shun,HU Shu-guang.Conductive functional aggregate carbon fiber cement-based composite material and its pressure sensitivity[J].Journal of Functional Materials,2011,42(11). |
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| Authors: | HE Yong-jia LV Lin-nv JIN Shun HU Shu-guang |
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| Affiliation: | HE Yong-jia1,LV Lin-nv2,JIN Shun1,HU Shu-guang1(1.School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China,2.School of Science,China) |
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| Abstract: | Conductive cement-based composite material was prepared by using carbon fiber and conductive functional aggregate calcined by graphite particles and clay matrix as composite conductive components.The pressure sensitivity of the composite material was investigated with Instron 5882 materials testing machine,dynamic resistance strain gauge and DC power supply systems,and the results showed that its resistivity was obviously affected by the pressure stress;during the process of loading beginning to failure,the... |
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| Keywords: | conductive functional aggregate carbon fiber cement based composite material pressure sensitivity |
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