电磁屏蔽功能纸的研究

轻化工程论文编号:QH042  论文字数:14706,页数:32

 目 录
中文摘要 I
英文摘要II
目录 III
1 绪论 1
1.1 电磁污染现状 1
1.2 电磁屏蔽的原理 1
1.3 电磁屏蔽材料 2
1.4 碳纤维电磁屏蔽复合材料的开发 4
1.4.1 填充型 4
1.4.2 复合材料型 4
1.5 复相纸基电磁屏蔽材料 5
2 分散剂对电磁屏蔽的影响实验 7
2.1 实验仪器及检测方法 7
2.3 分散剂使用量的影响 9
2.3.1 实验方案 9
2.3.2 实验结果与分析 10
2.4 总结 13
3 碳纤维对电磁屏蔽的影响实验 14
3.1 试验仪器及方法 14
3.1.1 主要设备 14
3.1.2 检测方法 14
3.2 实验方案 15
3.3 实验结果与分析 15
3.4 总结 20
4 改性碳纤维对电磁屏蔽的影响实验 21
4.1 实验仪器及方法 21
4.1.1 主要设备 21
4.1.2 检测方法 22
4.2 氧化改性碳纤维的影响实验 22
4.3 偶联改性碳纤维的影响实验 23
4.3.1 实验方案 23
4.3.2 实验结果与分析 24
4.4 总结 25
5 结论 26
致  谢 27
参考文献 28

摘 要：随着科技突飞猛进，电子产品普及千家万户，大功率电气设备数量急剧增加，导致电磁环境急剧恶化，从而带来了一系列危险隐患。将碳纤维与塑料、树脂等基体复合后形成树脂基纤维增强复合材料，是现代先进复合材料的典型代表，也是一种具有电磁屏蔽功能的材料。
 本文简要阐述了电磁屏蔽的原理和碳纤维的性能，通过不同浓度、不同分散剂以及不同表面改性方法对碳纤维分散性影响进行探讨，研究了碳纤维在水相的分散性能、碳纤维功能纸的导电性和电磁屏蔽性能。研究结果表明，随着碳纤维含量的不断增加，电磁屏蔽的总体性能在不断得到改善，当选用聚丙烯酰胺作为分散剂时，分散性能较好。通过钛酸酯偶联剂改性后的改性碳纤维，其分散性能、导电性和电磁屏蔽性能都有所提高。
 通过本课题的研究，证明了碳纤维电磁屏蔽功能纸的可行性，为早日开发出高性能电磁屏蔽功能纸奠定了一定的理论基础，也提供了数据依据。
 关键词：电磁屏蔽 ；碳纤维 ；分散剂 ；zeta电位

The research for electromagnetic shielding function of paper

 Abstract: With technological advances, electronic products universal thousands of households, the number of high-power electrical equipment increased dramatically, leading to a sharp deterioration of the electromagnetic environment, resulting in a series of dangerous problems. Carbon fiber and plastic, resin matrix after the formation of resin-based composite fiber-reinforced composite materials, advanced composite materials in modern representative of the typical, but also a function of electromagnetic shielding materials.
 This paper described the principle of electromagnetic shielding and the performance of carbon fiber through the different concentrations, different dispersing agent, as well as different methods of surface modification on dispersion of carbon fibers to explore the impact study of carbon fiber in the aqueous dispersion of the performance of carbon fiber paper conductivity function and electromagnetic shielding properties. The results showed that with the continuous carbon fiber content increased, the overall performance of electromagnetic shielding in continuous improvement was elected as the use of Polyacrylamide dispersant, the dispersion properties. Titanate coupling agent, through the modification of the modified carbon fiber, its dispersion properties, conductivity and electromagnetic shielding properties are improved.
 Through the study of the subject to prove that the electromagnetic shielding of carbon fiber of the feasibility of paper, for the early development of high performance electromagnetic shielding paper lay a theoretical foundation, it provides the data basis.
 Keywords：Electromagnetic shielding; carbon fiber; dispersant; zeta potential