Effect of temperature, pressure, and composition on DC resistivity and AC conductivity of conductive styrene–butadiene rubber–particulate metal alloy nanocomposites

Polymer Composites - Tập 28 Số 5 - Trang 696-704 - 2007
G. T. Mohanraj1, Pranab Dey2, T. K. Chaki1, A. K. Chakraborty3, Dipak Khastgir1
1Rubber Technology Centre, Indian Institute of Technology, Kharagpur, 721302, India
2Department of Metallurgical and Materials Science Engineering, Indian Institute of Technology, Kharagpur 721302, India
3Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur-721302, India

Tóm tắt

AbstractConductive nanocomposites were prepared using styrene butadiene rubber as the polymer matrix and nanosized powder of copper–nickel (Cu–Ni) alloy as the filler. The filler loading was varied from 0 to 40 phr. The electrical conductivity of filled polymer composites is due to the formation of some continuous conductive networks in the polymer matrix. Atomic force microscopy was used to determine the particle size of the nanofiller and its nature of dispersion in the rubber matrix. The DC volume resistivity was measured against the loading of the nanofiller to check the percolation limit. The effect of temperature, applied pressure, time duration under constant compressive stress on the DC resistivity and AC conductivity of the composites with different filler loading were investigated. The change in DC resistivity and AC conductivity against temperature of these composites exhibited positive coefficient of temperature. With the change in applied pressure and time duration under constant compressive stress the DC resistivity undergoes an exponential decrease. The effect of AC field frequency on the AC conductivity was investigated. POLYM. COMPOS. 28:696–704, 2007. © 2007 Society of Plastics Engineers

Từ khóa


Tài liệu tham khảo

Van Beek L. K. H., 1967

10.1007/BF00357799

10.1016/j.matchemphys.2005.02.033

10.1016/j.scriptamat.2005.03.034

10.1016/j.clay.2004.02.008

10.1016/j.sna.2003.08.006

10.1007/978-1-4684-1446-2

Neelakanta P. S., 1995, Handbook of Electromagnetic Materials

Schwartz M. M., 1984, Composite Materials Handbook

Delmonte J., 1987

10.1103/PhysRevB.42.3380

10.1016/0379-6779(88)90384-0

10.1088/0022-3727/32/15/307

Saha S. K., 1997, J. Appl. Phys., 81, 15

10.5254/1.3538614

10.5254/1.3542660

10.1002/app.1962.070062408

10.1016/S0008-6223(00)00130-5

Brandrup P., 1989, Polymer Handbook

10.5254/1.3547593

10.1002/app.20227

10.1016/j.compositesa.2003.08.002

Thông tin
Thông tin xuất bản

Polymer Composites

Tập 28 Số 5

696-704

Thông tin tác giả