Influence of Carbon Powder/Silica on Thermo-resistive Effect of Carbon Fiber Reinforced Polymer(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2017年06期
- Page:
- 36-43
- Research Field:
- Publishing date:
Info
- Title:
- Influence of Carbon Powder/Silica on Thermo-resistive Effect of Carbon Fiber Reinforced Polymer
- Author(s):
- LIU Rong-gui; PING Shu; XIE Gui-hua; LIU Dan; XI Yi-chao
- Faculty of Civil Engineering and Mechanics, Jiangsu University
- Keywords:
- CFRP; thermoresistive effect; PTC intensity; carbon powder; silica; sensor element
- PACS:
- -
- DOI:
- -
- Abstract:
- The thermo-resistive effect of CFRP sensor elements with mixed carbon powder and silica at room temperature to high temperature (100 ℃) was studied. The results show that the two CFRP sensor elements have positive temperature coefficient (PTC) effect when heating, and have good liner relationship between temperature difference (ΔT) and the common logarithm of resistance. Adding carbon powder and silica can improve the temperature sensitive characteristics of the sensor element. After the first temperature cycle, the CFRP sensor element generates a retention resistance which does not disappear with time. In the process of repeating the temperature, with respect to the CFRP sensor elements without any mixture, the CFRP sensor element added carbon powder and silica has higher PTC strength and better regularity and repeatability, and it shows negative temperature coefficient (NTC) effect when ΔT at 0-20 ℃, PTC effect at 20-80 ℃.
Last Update: 2017-11-30