Sowińska-Baranowska Anna, Maciejewska Magdalena
Department of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego Street 16, 90-537 Lodz, Poland.
Materials (Basel). 2021 Sep 14;14(18):5302. doi: 10.3390/ma14185302.
In this work, we present the effect of silica's specific surface area (180 m·g and 380 m·g, respectively) on the crosslinking of styrene-butadiene rubber (SBR) composites, as well as their crosslink density and functional properties, such as thermal stability, damping behavior, resistance to thermo-oxidative aging, and tensile properties. Ionic liquids (ILs) with a bromide anion and different cations, i.e., 1-butyl-3-methylimidazolium (Bmi), 1-butyl-3-methylpyrrolidinium (Bmpyr), and 1-butyl-3-methylpiperidinium (Bmpip), were used to enhance the cure characteristics of SBR compounds and the functional properties of SBR vulcanizates. It was proven that apart from the silica's specific surface area, the filler-polymer and filler-filler physical interactions have a significant impact on the vulcanization kinetics of silica-filled SBR composites. Additionally, the performed studies have shown that ILs positively affected the dispersion of silica's particles and reduced their ability to form agglomerates in the elastomer matrix, which enhanced the functional properties of the SBR vulcanizates.
在本研究中，我们展示了二氧化硅比表面积（分别为180 m²·g和380 m²·g）对丁苯橡胶（SBR）复合材料交联的影响，以及它们的交联密度和功能特性，如热稳定性、阻尼行为、抗热氧化老化性能和拉伸性能。使用带有溴离子阴离子和不同阳离子的离子液体（ILs），即1-丁基-3-甲基咪唑鎓（Bmi）、1-丁基-3-甲基吡咯烷鎓（Bmpyr）和1-丁基-3-甲基哌啶鎓（Bmpip），来增强SBR胶料的硫化特性和SBR硫化胶的功能特性。结果表明，除了二氧化硅的比表面积外，填料-聚合物和填料-填料之间的物理相互作用对二氧化硅填充的SBR复合材料的硫化动力学有显著影响。此外，所进行的研究表明，离子液体对二氧化硅颗粒的分散有积极影响，并降低了它们在弹性体基质中形成团聚体的能力，从而增强了SBR硫化胶的功能特性。
