天然橡胶(NR)是重型场合如飞机或卡车轮胎所用弹性体的首选。尽管NR能够提供优良的强度性能,但控制厚橡胶断面硫化程度的均一性仍显困难。大约90%~100%“最佳”硫化(或用动模流变仪或振荡盘流变仪测量的扭矩水平)时,制品表现出最佳特性,如高强度和低滞后。最佳硫化条件下要使厚 Natural rubber (NR) is the first choice for elastomers for heavy duty applications such as aircraft or truck tires. Although NR can provide excellent strength properties, it is still difficult to control the uniformity of vulcanization of thick rubber sections. At about 90% to 100% “best” cure (or torque level measured with a dynamic mold rheometer or oscillating disc rheometer), the article exhibits the best properties such as high strength and low hysteresis. The best curing conditions to make thick