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Citation: DONG Xian-Ming, ZHANG Shu-Ting, LUO Yinga, FU Ruo-Wen, ZHANG Ming-Qiu. Conducting and Gas-Sensing Properties of CB/VGCF/PBMA Conductive Composites[J]. Chinese Journal of Applied Chemistry, ;2006, 23(11): 1301-1303. shu

Conducting and Gas-Sensing Properties of CB/VGCF/PBMA Conductive Composites

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a Department of Applied Chemistry, College of Sciences, South China Agricultural University, Guangzhou;
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b Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Materials Science Institute, Sun Yat-sen University, Guangzhou 510275

Corresponding author: ZHANG Ming-Qiu,
Received Date: 15 November 2005
Available Online: 22 January 2006
Fund Project: 国家自然科学基金重点项目(50133020) (50133020)华南农业大学博士启动基金(2005K118) (2005K118)

Carbon black/vapor-grown carbon fibres/poly(butyl methacrylate)(CB/VGCF/PBMA) conductive composite was fabricated by polymerization filling.Conducting property and electrical resistance responsivity of the composite in saturated organic vapors were investigated.The experimental results indicate that 1%(mass fraction) of VGCF was able to decrease the electrical resistivity of the composite from 1 040 Ω·cm to 195 Ω·cm,probably due to an additional percolation process.Adding small amount of VGCF into the composites notably decrease the negative vapor coefficient(NVC) intensity of the composites from 15.6 to 2.2.
- carbon black,
- vapor-grown carbon fibre,
- conductive polymer composite,
- gas-sensing property
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