Improvement of thermal and electrical properties of Silicone-Ni composites using magnetic field

被引：40
作者：
Boudenne, Abderrahim [1 ]
Mamunya, Yevgen [2 ]
Levchenko, Volodymyr [2 ]
Gamier, Bertrand [3 ]
Lebedev, Eugene [2 ]
机构：
[1] Univ Paris Est Creteil Val Marne, CERTES, F-94010 Creteil, France
[2] Natl Acad Sci Ukraine, Inst Macromol Chem, Kiev, Ukraine
[3] Univ Nantes, Ecole Polytech, Lab Thermocinet, UMR CNRS 6607, F-44035 Nantes, France
来源：
EUROPEAN POLYMER JOURNAL | 2015年 / 63卷
关键词：
Thermal conductivity; Electrical conductivity; Polymer composites; Nickel; Magnetic field; CARBON NANOTUBES; CONDUCTIVITY; BEHAVIOR; PERCOLATION; ALIGNMENT; POLYMERS; FILMS;
D O I：
10.1016/j.eurpolymj.2014.11.032
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Thermally and electrically conductive silicone rubber composites filled with nickel particles have been prepared for several filler concentrations and for three different spatial distributions using various magnetic field orientations. The alignment of metallic particles in the polymeric matrix was confirmed by SEM and optical observation of the microstructure of composites. The spatial distribution of the particles does not affect the specific heat behavior of composites; while higher heat and electric transport ability was reached for composites filled with alignment of particles along the main heat flux due to creation of 1D structure of Ni particles. This filler configuration allows enhancement of the thermal conductivity of about 100% compared to the transverse and random distribution of particles; and contributes also to reducing the percolation threshold from 25 to 2 vol.% of nickel particles. Thus a great improvement of both thermal and electrical behavior is obtained by using a magnetic field for the preparation of silicone nickel composite. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：11 / 19
页数：9
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