The Effect of Borax on Thermal and Mechanical Properties of Ethylene-Propylene-Diene Terpolymer Based Elastomer

Addition of Borax to composite samples containing carbon and Kevlar fibers or their mixture with equal ratio can increase the tensile strength, elastic modulus and hardness as well as a minor decreasing elongation of rubber samples. The results of thermogravimetric analysis (TGA) show that the samples can cause significant increment of the char yield at 670°C with increasing Borax to rubber compounds. Subsequently, ablation resistance of samples was also improved by increasing Borax content. Meanwhile, replacement of Borax with carbon fiber reduces the density and thermal conductivity of insulator. Sample containing 20 phr Borax, 10 phr carbon fiber and 10 phr Kevlar was shown suitable thermal and ablative properties in comparison with asbestos filled EPDM

کلیدواژه ها:

EPDM ، Borax ، erosion rate ، thermal properties