改性剂用量对紫炭黑填充天然橡胶/顺丁橡胶并用胶性能的影响

摘要

研究改性剂（间苯二酚/六次亚甲基四胺共混物）用量对紫炭黑填充天然橡胶/顺丁橡胶并用胶性能的影响。结果表明：随着改性剂用量增大，胶料的硬度和定伸应力提高，拉伸强度、撕裂强度先下降后提高，阿克隆磨耗量先增大后减小；当改性剂/紫炭黑用量比为4%时，胶料的物理性能较好。添加改性剂可提高紫炭黑对胶料的补强作用，并在一定程度上改善胶料的热稳定性。%The effect of addition amount of modifier (resorcinol/hexamethylenetetramine blends) on the properties of purple black iflled NR/BR blends was studied. It was found that with the increase of modiifer amount, the hardness and modulus of the vulcanizates increased, tensile strength and tear strength decreased at ifrst and then increased, and the Akron wear ifrstly increased and then decreased. The optimal addition ratio of modiifer purple black was 4%. The test results showed that addition of the modiifer could improve the reinforcing effect of purple black and improve the thermal stability of the compound.