天然橡胶/顺丁橡胶/1,2-聚丁二烯橡胶并用胶的性能研究

Study on Properties of NR/BR/1,2-Polybutadiene Rubber Blends

研究天然橡胶(NR)/顺丁橡胶(BR)/1,2-聚丁二烯橡胶(1,2-PBR)并用胶的硫化特性、物理性能及动态力学性能,确定适用于轮胎胎面胶的BR/1,2-PBR最佳并用比。结果表明:与NR或BR相比,1,2-PBR加工性能稍差。当BR/1,2-PBR并用比为25/5时,NR/BR/1,2-PBR并用胶的综合物理性能和抗湿滑性能较好;当BR/1,2-PBR并用比为15/15时,并用胶的压缩温升低,压缩永久变形最小,综合力学性能优异,更适合应用于轮胎胎面。

The curing behavior, physical properties and dynamic mechanical property of NR/BR/ 1,2-polybutadiene rubber （1,2-PBR） blends were studied,and the optimum blending ratio of BR/1,2- PBR was obtained. The results showed that, compared with those of NR or BR, the processability of 1,2-PBR was poor. As the blending ratio of BR/1,2-PBR was 25/5, the NR/BR/1,2-PBR blend pos- sessed better comprehensive physical properties and wet skid resistance. When the BR/1,2-PBR blend- ing ratio was 15/15, the blend had lower compression temperature rise, lower compression set, and good mechanical property. The blend with BR/1,2-PBR blending ratio at 15/15 was more suitable for tire tread.