| 聚氨酯乳液／纳米石墨微片复合导电涂料的制备及其电磁屏蔽性能 |
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| 引用本文： | 吕明旭,陈国华.聚氨酯乳液／纳米石墨微片复合导电涂料的制备及其电磁屏蔽性能[J].安全与电磁兼容,2008(6):69-72. |
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| 作者姓名： | 吕明旭 陈国华 |
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| 作者单位： | 华侨大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金，福建省自然科学基金重点项目 |
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| 摘 要： | 以纳米石墨微片为导电填料，聚氨酯乳液为基体，制备水性导电复合涂料，研究其导电性能和电磁屏蔽性能。结果表明，质量分数为35wt％纳米石墨微片，粘度区间160～180MPa·s，质量分数为2％的OP-10分散剂为最佳配方，最佳施工工艺为超声波分散30min后喷涂，涂层厚度控制在80um左右，在65℃的条件下固化。通过该法制备得到的导电涂料，其涂层表面电阻率降低至7．5Ω·cm^-2,平均的电磁屏蔽效能在27dB左右（300kHz～1．5GHz）。
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| 关 键 词： | 纳米石墨微片(GNs) 水性导电涂料 电磁屏蔽效能 复合 |
Preparation of Polyurethane-emulsion/Graphite Nanosheets Composite Conductive Coating and Its Electromagrletic Shielding Property |
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| Lv Mingxu,Chen Guohua.Preparation of Polyurethane-emulsion/Graphite Nanosheets Composite Conductive Coating and Its Electromagrletic Shielding Property[J].Safety & EMC,2008(6):69-72. |
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| Authors: | Lv Mingxu Chen Guohua |
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| Abstract: | A waterborne conductive coating based on graphite nanosheets （GNs） and polyurethane-emulsion has been developed, the surface conductivity and electromagnetic shielding effectiveness of the conductive coating were discussed. After the experiment, the optimal parameters for the component are as follows： 35 wt% of graphite nanosheets, 2 wt% of OP-10 dispersant and viscosity between 160 MPa·s and 180 MPa·s. The best construction process is： ultrasonic dispersion for 30 minutes, controlling the thickness of the coating at about 80 um and cured at 65 ℃. Then, the surface resistivity of the conductive coating decreased to 7.5 Ω·cm^-2, and its average shielding effectiveness was about 27 dB （300 kHz-1.5 GHz）. |
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| Keywords: | graphite nanosheets （GNs） waterborne conductive coating electromagnetic shielding effectiveness composite |
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