[1]陈仕国,古小艺,戈早川. 炭黑/水性聚氨酯复合材料的制备与气敏性能[J].深圳大学学报理工版,2006,23(4):320-324.
 CHEN Shi-guo,GU Xiao-yi,and GE Zao-chuan.Preparation and vapor sensitivity of carbon black /waterborne polyurethane composites[J].Journal of Shenzhen University Science and Engineering,2006,23(4):320-324.
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 炭黑/水性聚氨酯复合材料的制备与气敏性能()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第23卷
期数:
2006年4期
页码:
320-324
栏目:
土木建筑工程
出版日期:
2006-10-30

文章信息/Info

Title:
Preparation and vapor sensitivity of carbon black /waterborne polyurethane composites
文章编号:
1000-2618(2006)04-0320-05
作者:
陈仕国古小艺戈早川
深圳大学材料学院,深圳市特种功能材料重点实验室,深圳 518060
Author(s):
CHEN Shi-guo GU Xiao-yi and GE Zao-chuan
Shenzhen Key Laboratory of Special Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 P. R. China
关键词:
炭黑水性聚氨酯气敏性能导电复合材料
Keywords:
carbon blackwaterborne polyurethanevapor sensitivityconducting composites
分类号:
TA 323.8
文献标志码:
A
摘要:
以环境友好的水性聚氨酯( WPU )为基体,以炭黑( CB )为导电填料,采用乳液共混法制备了低逾渗值的炭黑 / 水性聚氨酯( CB/WPU )导电复合材料,研究其在不同有机蒸汽环境中的气敏响应性能 . 研究发现, CB/WPU 复合材料对有机溶剂蒸汽的气敏响应速率快,当复合材料置于饱和有机溶剂蒸汽环境时,电阻迅速增大, 60s 左右电阻即可达到最大值,然后趋于稳定值;当复合材料转移到干燥空气中时,电阻急剧下降,直到回复初始电阻值 . 另外, CB/WPU 复合材料具有广谱的气敏响应特征,表现为对极性和非极性有机溶剂蒸汽均呈现较大的气敏响应度 . 从而表明, CB/WPU 复合材料是一种气敏响应度大、响应速度快、具有广谱气敏响应性能等综合性能优异的气敏导电复合材料 .
Abstract:
The carbon black /waterborne polyurethane (CB/WPU) composites with low percolation threshold were prepared by adding carbon black to waterborne polyrethane latex and the vapor sensing response of the electric resistance of the composites against saturated solvent vapors was investigated. It was found that the CB W/ PU composites were sensitive to organic solvent vapors regardless of their polarities as characterized by the drastic changes in conductivity. The resistance o f the CB/WPU composites drastically increased to 103-106 times of the initial resistance (about 60 s) when the composite was transferred from dry air to saturated vapor. It also returned quickly to their initial value when they were transferred to dry air. It seems that CB/WPU composite can be used as a promising gas sensing material with high electrical responsibility, stability and reproducibility

相似文献/References:

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 LI Yong,WU Jiabao,WU Zhengxin,et al.Preparation and properties of Er2O3-WO3-waterborne polyurethane based X-ray shielding material[J].Journal of Shenzhen University Science and Engineering,2020,37(4):293.[doi:10.3724/SP.J.1249.2020.03293]

更新日期/Last Update: 2015-06-26