Title :
The advance in theory research of PTC properties of polymer/carbon black composites
Author :
Xi, B.F. ; Chen, K. ; Liu, F.Y. ; Xu, C.X. ; Zhang, Q.Y.
Author_Institution :
State Key Lab. of Electr. Insulation for Power Equip., Xi´´an Jiaotong Univ., China
Abstract :
Many theoretic models for the mechanism of the PTC properties of polymer/carbon black composites are suggested. Several main models (conductance chain and thermal expansion model, tunneling conductance model, carbon black aggregation structure change and migration model, and ohmic conductance and phase change model) are analyzed and discussed. The advantages and defects of each model are indicated
Keywords :
carbon; filled polymers; insulating materials; thermal expansion; tunnelling; C; carbon black aggregation; conductance chain model; migration model; ohmic conductance; phase change; polymer/carbon black composites; positive temperature coefficient; thermal expansion model; tunneling conductance model; Crystallization; Electrons; Mechanical factors; Polyethylene; Polymers; Resistance heating; Temperature; Thermal conductivity; Thermal expansion; Tunneling;
Conference_Titel :
Electrical Insulating Materials, 1998. Proceedings of 1998 International Symposium on
Conference_Location :
Toyohashi
Print_ISBN :
4-88686-050-8
DOI :
10.1109/ISEIM.1998.741751
