Combination of Self-Healing Butyl Rubber and Natural Rubber Composites for Improving the Stability

Abstract

The self-healing composites were prepared from the combination of bromobutyl rubber (BIIR) and natural rubber (NR) blends filled with carbon nanotubes (CNT) and carbon black (CB). To reach the optimized self-healing propagation, the BIIR was modified with ionic liquid (IL) and butylimidazole (IM), and blended with NR using the ratios of 70:30 and 80:20 BIIR:NR. Physical and chemical modifications were confirmed from the mixing torque and attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR). It was found that the BIIR/NR-CNTCB with IL and IM effectively improved the cure properties with enhanced tensile properties relative to pure BIIR/NR blends. For the healed composites, BIIR/NR-CNTCB-IM exhibited superior mechanical and electrical properties due to the existing ionic linkages in rubber matrix. For the abrasion resistances, puncture stress and electrical recyclability were examined to know the possibility of inner liner applications and Taber abrasion with dynamic mechanical properties were elucidated for tire tread applications. Based on the obtained Tg and Tan δ values, the composites are proposed for tire applications in the future with a simplified preparation procedure.

Дослідження Фізико-Хімічних Властивостей Сировини Для Твердого Ракетного Палива

“…Відомі дослідження аналізу властивостей речовин, що містять каучук [2]. Проведено аналіз актуальних літературних іноземних джерел, що стосуються дослідження каучуків [3][4][5][6][7]. В даних публікаціях пропонується дослідження, модифікація, отримання та застосування каучуків для вирішення різноманітних задач.…”

Solving the Dichotomy between Self‐Healing and Mechanical Properties in Rubber Composites by Combining Reinforcing and Sustainable Fillers

“…[ 10,11 ] The strategies reported so far to overcome this compromise are i) inclusion of nanofillers; [ 12–15 ] ii) surface modification of the fillers; [ 16,17 ] and iii) combinations of different types of fillers. [ 18,19 ] The first two strategies have been widely used, considering different combinations depending on the nature of the filler and/or matrix, their interaction, and final desired properties. As an example, Kuang et al.…”

“…Chumnum et al. [ 18 ] evaluated the healing capability of BIIR/NR blends reinforced with a combination of CNT and CB, reporting a slight decrease of the electrical conductivity after three cycles of a puncture test. Recently, Zhang et al.…”

“…[10,11] The strategies reported so far to overcome this compromise are i) inclusion of nanofillers; [12][13][14][15] ii) surface modification of the fillers; [16,17] and iii) combinations of different types of fillers. [18,19] The first two strategies have been widely used, considering different combinations depending on the nature of the filler and/or matrix, their interaction, and final desired properties. As an example, Kuang et al [12] reported improved mechanical properties without decreasing the healing capability when multi-walled carbon nanotubes (MWCNT) were added to sytrene-butadiene rubber (SBR) using Diels-Alder reactions as healing moiety.…”

“…Meanwhile, the studies based on the third strategy (i.e., combination of fillers) are scarce. Chumnum et al [18] evaluated the healing capability of BIIR/NR blends reinforced with a combination of CNT and CB, reporting a slight decrease of the electrical conductivity after three cycles of a puncture test. Recently, Zhang et al [19] designed a self-healing rubber composite with excellent mechanical properties, and conductive and self-healing performance.…”