Title: Components and producing method of positive-temperature-coefficient conductive polymer composite material
Application Number: 97108956 Application Date: 1997.06.24
Publication Number: 1170734 Publication Date: 1998.01.21
Approval Pub. Date: Granted Pub. Date: 2004.06.09
International Classifi-cation: C08L23/00,C08L25/00,H05B3/10
Applicant(s) Name: Zhongshan Univ. Address: 510275
Inventor(s) Name: Yu Gang, Zhang Mingqiu
Attorney & Agent: WU BIFANG
Abstract:
     The said positive temperature coeffient (PTC) material is produced with the first crystalline polymer matrix, the second polymer matrix incompatible or partially compatibe with the first one, conductive filling and other assistants, and through pugging in certain ratio, moulding and subsequent processing. Because the said multi-phase composite exhebits double percolation effect, inhomogeneous selective dispersion of conductive filling, modification of the second polymer matrix and other synergistic effect, the said composite materials has improved PTC stability, mechanical performance and machinability, and this provides base material for producing self temperature limiting heater and over-current protection element.
Time: 11
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