【摘要】 以天然橡胶/丁苯橡胶(Natural rubber/styrene butadiene rubber,NR/SBR)并用体系为基材,采用电子束辐照技术对其进行辐射预硫化,研究了不同吸收剂量下,材料交联度、硫化速度及格林强度的变化趋势,并评价了电子束辐射预硫化对材料最终力学性能的影响。结果表明:NR/SBR并用体系的交联度和格林强度随吸收剂量的增加而提高,热硫化速度基本不受吸收剂量的影响,可实现NR/SBR并用体系的辐射预硫化;辐射预硫化与未辐射预硫化的NR/SBR相比,完全硫化后材料的力学性能相差不大。更多还原

【Abstract】 Natural rubber(NR)/styrene butadiene rubber(SBR) blends was precured by electron beams(EB) irra-diation. The crosslinking degree、green strength and heat curing speed of NR/SBR were studied with different ab-sorbed doses. And the effects of EB irradiation precuring on the final mechanical properties were evaluated. The re-sults show that the crosslinking degree and green strength of NR/SBR was improved respectively while the heat cur-ing speed was not changed with increasing absorbed doses. The final mechanical properties were not significantly changed between the irradiation precuring and non-irradiation precuring of NR/SBR. The EB irradiation precuring of NR/SBR may be suitable for rubber process.更多还原