| 不同直径炭黑环氧树脂基复合材料力电性能及其机理 |
| |
| 引用本文： | 季小勇,李惠,欧进萍.不同直径炭黑环氧树脂基复合材料力电性能及其机理[J].复合材料学报,2007,24(4):13-21. |
| |
| 作者姓名： | 季小勇 李惠 欧进萍 |
| |
| 作者单位： | 哈尔滨工业大学 土木工程学院, 哈尔滨 150090 |
| |
| 基金项目： | 国家自然科学基金，国家自然科学基金，国家自然科学基金 |
| |
| 摘 要： | 通过实验研究了喷雾炭黑、 N762炭黑、 特导电炭黑和N326炭黑环氧树脂基复合材料的力电特性、 伏安特性及电场作用前后电阻变化, 以及炭黑掺量对其上述性能的影响。试验结果表明, 炭黑直径和掺量对炭黑环氧树脂基复合材料的力电特性、 伏安特性和电阻特性具有较大的影响。掺加质量分数为35％~52.5％, 直径123nm喷雾炭黑的环氧树脂基复合材料具有很好的力电性能, 电压和电流关系符合伏安特性, 施加电场前后电阻没有明显变化; 掺33nm特导电炭黑和30nm N326炭黑的环氧树脂基复合材料的力电变化没有明显的规律, 电压和电流关系不符合伏安特性, 施加电场后其电阻大幅度降低; 掺84nm N762炭黑和26.25％质量分数的喷雾炭黑的环氧树脂基复合材料力电变化具有规律性, 但不稳定, 电压电流关系不符合伏安特性, 施加电场后其电阻降低, 但下降的幅度不大。在实验研究的基础上, 建立了炭黑环氧树脂基复合材料电路模型, 揭示了电击穿是施加电场前后炭黑环氧树脂复合材料电阻发生明显变化的机理, 最后, 通过分析炭黑间环氧树脂间隙层的变形, 解释了炭黑环氧树脂基复合材料的力电特性变化规律。
|
| 关 键 词： | 炭黑 环氧树脂 力电性能 复合材料 |
| 文章编号： | 1000-3851（2007）04-0013-09 |
| 收稿时间： | 2006-09-02 |
| 修稿时间： | 2006-12-04 |
Electro-mechanical properties and mechanism of carbon black filled epoxy-based composites |
| |
| JI Xiaoyong,LI Hui,OU Jinping.Electro-mechanical properties and mechanism of carbon black filled epoxy-based composites[J].Acta Materiae Compositae Sinica,2007,24(4):13-21. |
| |
| Authors: | JI Xiaoyong LI Hui OU Jinping |
| |
| Affiliation: | School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China |
| |
| Abstract: | The electro-mechanical properties, relation of current and voltage, and electric resistance pre and post-exposed to an electric field of the epoxy-based composites containing N326, conductive, sprayed and N762 carbon black (CB), respectively, are experimentally studied. The influence of the CB content on the three properties mentioned above is also studied. The test results indicate that electro-mechanical properties, relation of current and voltage and electric resistance variation of the CB filled epoxy-based composites are impacted by the CB diameter and content. The composites containing sprayed CB with a diameter of 123nm in the range of 35%~52.5% by mass fraction have good electro-mechanical properties, linear relation between current and voltage, and no resistance variation post-exposed to an electric field. However, the composites containing conductive CB and N326 CB with the diameters of 33nm and 30nm, respectively, do not have obvious regularity in changing the electro-mechanical properties; the relation of current and voltage is nonlinear, and resistance of the composites post-exposed to an electric field decreases dramatically. The composites containing N762 CB with a diameter of 84nm and sprayed CB with a diameter of 123nm in the amount of 26.25% by mass fraction have regular electro-mechanical properties somewhat; the relation of current and voltage is nonlinear and the resistance of the composites post-exposed to an electric field decreases slightly. Furthermore, a DC circuit model based on the experimental research is proposed. The occurrence of electrical breakdown induces the dramatic decrease of electric resistance of the composites post-exposed to an electric field. Finally, the deformation of the epoxy resin layer between two CB particles is employed to interpret the electro-mechanical properties of the CB filled epoxy-based composites. |
| |
| Keywords: | carbon black epoxy electro-mechanical property composites |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载全文 |
|
