Highly filled elastomeric matrix composites: Structure and property evolution at low temperature carbonization

A new approach for the development of carbon composites via a low-temperature carbonization of elastomer compounds highly filled with various carbon fillers and dispersed SiC was systematically implemented. A new class of economically attractive carbon composites was purposely designed and relevant low-temperature carbonization approach was systematically applied for elastomer compounds highly filled with various carbon fillers and dispersed SiC. It was shown that carbonization in the range of 320-360 degrees C results in a combination of sound structure and optimal properties. The composites carbonized at 360 degrees C were thoroughly studied in terms of structure, mechanical and thermal properties. The values of the tensile and the flexural strength of the composites lie in the range of 65-85 MPa and 75-125 MPa, respectively. Positive effect of SiC fillers on the thermal expansion behavior of the carbonized composites was found. The coefficient of thermal expansion for SiC-containing composites was around 20-35 * 10(-6) in the temperature range of 30-300 degrees C Obtained combination of service properties assumes a range of applications in machine building and in the construction of high-demand mechanical parts. (C) 2018 Elsevier Ltd. All rights reserved.