Luangchuang Piyawedee, Sornanankul Tanawat, Nakaramontri Yeampon
Sustainable Polymer & Innovative Composite Materials Research Group, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand.
Polymers (Basel). 2023 Oct 8;15(19):4023. doi: 10.3390/polym15194023.
Ionic crosslinking of bromobutyl rubber (BIIR) composites was prepared using butylimidazole (IM) and ionic liquid (IL), combined with carbon nanotubes (CNT) and conductive carbon black (CCB) to enhance the intrinsic properties and heal ability of the resulting composites. Variation in the BIIR/CNT-CCB/IM/IL ratios was investigated to determine the appropriate formulation for healing the composites. Results showed that the mechanical properties were increased until the IM:IL:CNT/CCB ratio reached 1:1:1/1.5, corresponding to the optimal concentration of 5:5:5/7.5 phr. Thermo-oxidative degradation, as indicated using temperature scanning stress relaxation (TSSR), demonstrated the decomposition of the composites at higher temperatures, highlighting the superior resistance provided by the proper formulation of BIIR composites. Additionally, the conditions for the healing procedure were examined by applying pressure, temperature, and time. It was observed that the composites exhibited good elasticity at 0 °C and 60 °C, with a high rate of re-crosslinking achieved under appropriate pressure and temperature conditions. This research aims to develop a formulation suitable for the tire tread and inner liner of commercial car tires together with artificial skin products.
采用丁基咪唑（IM）和离子液体（IL）对溴化丁基橡胶（BIIR）复合材料进行离子交联，并结合碳纳米管（CNT）和导电炭黑（CCB），以提高所得复合材料的固有性能和自愈能力。研究了BIIR/CNT-CCB/IM/IL比例的变化，以确定复合材料自愈的合适配方。结果表明，在IM:IL:CNT/CCB比例达到1:1:1/1.5之前，机械性能有所提高，对应于5:5:5/7.5 phr的最佳浓度。使用温度扫描应力松弛（TSSR）表明，热氧化降解表明复合材料在较高温度下会分解，突出了BIIR复合材料合适配方所提供的优异抗性。此外，通过施加压力、温度和时间来研究自愈过程的条件。观察到复合材料在0°C和60°C时表现出良好的弹性，在适当的压力和温度条件下实现了高交联速率。本研究旨在开发一种适用于商用汽车轮胎胎面和内衬以及人造皮肤产品的配方。
