首页|Preparation of Polyacrylate-based Conductive Coatings and Its PTC Effect

Preparation of Polyacrylate-based Conductive Coatings and Its PTC Effect

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Polyacrylate-based conductive coatings were prepared from polyacrylate emulsion as matrix and carbon black (CB) whose surface was treated with titanate coupling agent as conducting particles. One kind of organic crystal was added to study its effects on the electrical conductivity and PTC (positive temperature coefficient) effect of the conductive coatings. Experimental results show that the coatings containing only polyacrylate emulsion and CB exhibit an excellent electrical conductivity bat bad PTC effect, and when organic crystal is added, PTC effect is characterized and can increase by 2 orders of magtitude. The critical transformation temperature of polyacrylate emulsion/CB PTC composites is decided by melting point of organic crystals.

carbon blockPTC effectorganic crystal

XIONG Chuan-xi、HU Hui-rong、ZHOU Zhi-yong

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Wuhan University of Technology

2004

Journal of Wuhan University of Technology: Materials science edition