文档介绍：上海交通大学
硕士学位论文
含碳纳米管新型宽频轻质电磁屏蔽材料的研制
姓名:吕霞娟
申请学位级别:硕士
专业:材料工程
指导教师:吴建生;姚中恒
20080601
上海交通大学硕士学位论文碳纳米管新型宽频轻质电磁屏蔽材料的研制

含碳纳米管新型宽频轻质
电磁屏蔽材料的研制

摘要

随着电子产品的广泛使用,防止电磁波辐射污染以保护环境和人
体健康,防止电磁波泄漏以保障信息安全,已经成为当前国际上迫切
需要解决的问题。涂料作为新一代功能材料朝着宽频、高衰减度、长
寿命、低成本、施工简便方向发展。而碳纳米管由于其特殊的小尺寸
效应、表面效应和量子效应成为一种新型的电磁吸收剂,使得研制宽
频、质轻、高吸收的材料成为可能。
本文首先对基体树脂的分析,发现不同分子量的丙烯酸树脂作为
导电涂料的基料导电率不同,又比较不同种类的润湿分散剂的作用,
选择了钛酸酯偶联剂,并确定其用量为碳纳米管的 4%。从溶剂的溶解
性和挥发速度角度考虑,选择醋酸乙酯成为电磁屏蔽涂料的主要溶剂。
本文探讨了碳纳米管的分散设备和分散介质,并确定了和分散工艺,
砂磨时间小时,砂磨速度 1500 转/分钟。添加多种规格的碳纳米
管制备出复合涂层的电磁屏蔽涂料,在频带为 10KHz-18GHz 范围内达
到电磁效能≥30dB 的要求,并对其机理进行了分析。对涂料性能(附
着力、铅笔硬度、盐雾试验、湿热试验、霉菌试验等)进行实验,满
足相关标准。使得制备一种新型宽频轻质的电磁屏蔽涂料成为可能。

关键词:碳纳米管,电磁屏蔽涂料,宽频,轻质
I
上海交通大学硕士学位论文碳纳米管新型宽频轻质电磁屏蔽材料的研制

RESEARCH OF BROAD FREQUENCY LIGHT
WEIGHT IC SHIELDING
COATING INCLUDING NANO CARBON TUBE

ABSTRACT

With the electronic devices widely used, protecting person’s health from
ic pollution and protecting information security from ic
wave leaking e a serve problem to be solved. Composite ic
interference shielding coatings are of expansive research and development anticipation
to high efficiency, broad frequency, low cost, long service life and easy application.
Nano carbon tube es a new type ic absorbent, due to its tiny
dimension effect, surface effect and quantum effect. posite materials with
broad frequency, light weight and good shielding effectiveness are expected to have a
bright future in applied fields
Different molecular weight acrylic resins as the base of conductive coating have
different conductivity. The relationship between the conductivity and shielding
effectiveness of ic shielding paint and nano carbon tube treated with
different coupling agents and contents were studied in this paper. The good dispersion
ability of carbon tube in the resin can be obtained with carbon tube treated with the 4%
mass content of titanate coupling. Acetate ester has been choosed as t