Functionalized Silica as an Eco-Friendly Vulcanization Accelerator to Enhance the Interfacial Interaction in Nr/Silica Composites

Abstract

Xanthate is a class of non-toxic, rapid, and eco-friendly rubber vulcanization accelerator, but it is seldom used in the rubber industry because of its poor thermostability and ease of decomposition. To overcome these drawbacks, silica supported sodium isobutyl xanthate (silica-s-SIBX) was prepared by chemically bonding SIBX onto the silica surface. After loading, the initial degradation temperature (T0), maximum degradation temperature (Tp), and final decomposition temperature (Tf) of silica-s-SIBX were increased by 85.8, 118.9, and 146.9 °C, respectively. Meanwhile, silica-s-SIBX could not only improve the dispersion of fillers in the rubber but also enhance the interfacial interaction between silica and the rubber matrix. Therefore, it may offer new scientific and technological opportunities for preparation of green additives in the rubber industry.

Effects of β‐dextranase in raw natural rubber on the interface and performance of natural rubber/silica composites via simulation with an outer same protein

“…Natural rubber (NR) as an important industrial material is widely used in tire area based on its excellent mechanical and dynamic properties. As we known, the acquisition of these properties must depend on the assistance of fillers, [1][2][3][4] always be relied on the optimal rubber-filler interaction. Usually, to achieve this goal, some external coupling reagents or surface treating agents 5,6 are involved.…”

Recent progress of elastomer–silica nanocomposites toward green tires: simulation and experiment

“…Silane coupling agents show their distinct advantages in silica modification; however, the emission of volatile organic compounds (VOCs) is a drawback 23 . Recently, a large number of eco‐friendly modifiers have been prepared and put into practice 24,25 . Besides, functionalizing the commonly used rubber chains, including styrene‐butadiene rubber (SBR), polybutadiene rubber (BR) and natural rubber (NR), is another strategy to improve silica dispersion 26,27 .…”

“…23 Recently, a large number of eco-friendly modifiers have been prepared and put into practice. 24,25 Besides, functionalizing the commonly used rubber chains, including styrenebutadiene rubber (SBR), polybutadiene rubber (BR) and natural rubber (NR), is another strategy to improve silica dispersion. 26,27 Introducing a certain amount of compatibilizers, such as block copolymers (BCPs), is also a convenient and effective method in regulating silica dispersion.…”