Abstract
The effects of carbon black on the properties of POR were studied. The effects of unsaturated contents in POR on cure rate were made clear, that is, the rate of cure was increased according to increasing unsaturated content, but the effects of Mooney viscosity and unsaturated content on the physical properties were not found.
Changing the amount of carbon blacks (HAF, SAF for 20 to 100 PHR), the reinforcement effects were tested. As a result, we found that tensile strength and tear resistance showed maximum value at 40 to 60 PHR carbon black. The other properties (modulus, permanent set, heat build-up, etc.) increased in proportion to the amount of carbon black.
Further, we studied the physical properties of several carbon black compounds (HAF, SAF, CRF, EPC, and FT). The study shows that modulus, tensile strength, heat build-up, permanent set, and so forth, increase in proportion to the amount of iodine adsorption of carbon black.
