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Characterisation and properties of polyisoprene (IR)/polybutadiene (BR) rubber blends-reinforced silanised silica nano-filler
Journal of Rubber Research ( IF 1.2 ) Pub Date : 2022-07-09 , DOI: 10.1007/s42464-022-00162-7
Abdul Rehman , Farhan Saeed , Raa Khimi Shuib

Synthetic polyisoprene (IR) rubber and polybutadiene (BR) rubber were mixed together to produce three IR/BR blends. The loading of BR in the blends was varied from 10 to 30 phr. Silanised silica was used as a nano-filler as well as vulcanising filler to reinforce and crosslink the rubber simultaneously. The crosslinking in the rubber was achieved by activating the tetrasulfide group of silane bis[3-triethoxysilylpropyl]-tetrasulphide (TESPT) using a non-sulphur donor accelerator and zinc oxide as an activator. The hardness, tensile strength, elongation at break, stored energy density at break, modulus at 100% elongation (M100), crosslink density and abrasion resistance of the blends were measured. The increasing loading of BR had a detrimental effect on the hardness, tensile strength, elongation at break and M100 of the blends. On the other hand, the abrasion resistance and thermal stability of the blends improved with the loading of BR. The blend with 20 phr BR loading was selected as the optimum blend for better abrasion resistance and mechanical properties. The 80/20 (IR/BR) blend can be used for potential light truck tyre tread compounds.



中文翻译:

聚异戊二烯(IR)/聚丁二烯(BR)橡胶共混物-增强硅烷化二氧化硅纳米填料的表征和性能

将合成聚异戊二烯 (IR) 橡胶和聚丁二烯 (BR) 橡胶混合在一起以生产三种 IR/BR 共混物。共混物中 BR 的添加量从 10 到 30 份不等。硅烷化二氧化硅用作纳米填料以及硫化填料,以同时增强和交联橡胶。橡胶中的交联是通过使用非硫供体促进剂和氧化锌作为活化剂活化硅烷双[3-三乙氧基甲硅烷基丙基]-四硫化物 (TESPT) 的四硫化物基团来实现的。测量了共混物的硬度、拉伸强度、断裂伸长率、断裂储能密度、100% 伸长率下的模量 (M100)、交联密度和耐磨性。BR 的添加量对共混物的硬度、拉伸强度、断裂伸长率和 M100 有不利影响。另一方面,随着BR的负载,共混物的耐磨性和热稳定性得到改善。选择含有 20 份 BR 的共混物作为最佳共混物,以获得更好的耐磨性和机械性能。80/20 (IR/BR) 混合物可用于潜在的轻型卡车轮胎胎面胶。

更新日期:2022-07-10
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