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Peroxide-Cured Isobutylene-Isoprene Rubber Composite: Methacrylate Coagent and Enhanced Mechanical Properties by In Situ Formed Methacrylate Domains
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-02-05 , DOI: 10.1021/acs.iecr.0c05987
Yu Sun 1 , Chengkai Fan 1 , Yihong Zhao 1 , Li Jia 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-02-05 , DOI: 10.1021/acs.iecr.0c05987
Yu Sun 1 , Chengkai Fan 1 , Yihong Zhao 1 , Li Jia 1
Affiliation
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Peroxide cure of ethyl propiolate-grafted isobutylene-isoprene rubber (EIIR) was studied with the goal of replacing the toxic m-phenylene-N,N′-bismaleimide (BMI) with the less toxic trimethylolpropane trimethacrylate (TMPTMA) as the curing coagent. Dicumyl peroxide (DCP) failed to sufficiently cure EIIR in the presence of TMPTMA, whereas benzyol peroxide (BPO) was effective. The EIIR vulcanizates cured by the BPO-TMPTMA combination displayed further improved mechanical properties in comparison to those of the EIIR cured by DCP and BMI. The balanced stiffness, strength, and extensibility of the BPO-TMPTMA-cured EIIR are the best among all peroxide cured IIR derivatives and compare favorably against those of sulfur-cured IIR derivatives that are not reinforced by fillers. The outstanding mechanical properties are attributed to reinforcement of the elastic continuous phase by TMPTMA-rich hard domains. The existence of such hard domains was confirmed by transmission electron microscopy and atomic force microscopy. The peroxide-cured EIIR composite reported here is potentially useful for pharmaceutical closure applications for its simple nontoxic formulation and excellent mechanical properties.
中文翻译:
过氧化物固化的异丁烯-异戊二烯橡胶复合材料:甲基丙烯酸酯助剂和通过原位形成的甲基丙烯酸酯域增强的机械性能
丙炔酸乙酯接枝异丁烯-异戊二烯橡胶的过氧化物硫化(EIIR)用替换有毒的目标研究米-亚苯基- Ñ,N'-双马来酰亚胺(BMI),毒性较小的三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)为固化助剂。过氧化二枯基(DCP)在TMPTMA存在下不能充分固化EIIR,而过氧化苯zyol(BPO)有效。与DCP和BMI固化的EIIR相比,BPO-TMPTMA组合固化的EIIR硫化胶显示出更高的机械性能。在所有过氧化物固化的IIR衍生物中,BPO-TMPTMA固化的EIIR的平衡的刚度,强度和可延展性是最好的,并且与不由填料增强的硫磺固化的IIR衍生物的平衡刚度,强度和可延展性最佳。杰出的机械性能归因于富含TMPTMA的硬质区域对弹性连续相的增强。通过透射电子显微镜和原子力显微镜确认了这种硬结构域的存在。本文报道的过氧化物固化的EIIR复合材料具有简单的无毒配方和出色的机械性能,可用于药物封闭应用。
更新日期:2021-02-17
中文翻译:
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过氧化物固化的异丁烯-异戊二烯橡胶复合材料:甲基丙烯酸酯助剂和通过原位形成的甲基丙烯酸酯域增强的机械性能
丙炔酸乙酯接枝异丁烯-异戊二烯橡胶的过氧化物硫化(EIIR)用替换有毒的目标研究米-亚苯基- Ñ,N'-双马来酰亚胺(BMI),毒性较小的三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)为固化助剂。过氧化二枯基(DCP)在TMPTMA存在下不能充分固化EIIR,而过氧化苯zyol(BPO)有效。与DCP和BMI固化的EIIR相比,BPO-TMPTMA组合固化的EIIR硫化胶显示出更高的机械性能。在所有过氧化物固化的IIR衍生物中,BPO-TMPTMA固化的EIIR的平衡的刚度,强度和可延展性是最好的,并且与不由填料增强的硫磺固化的IIR衍生物的平衡刚度,强度和可延展性最佳。杰出的机械性能归因于富含TMPTMA的硬质区域对弹性连续相的增强。通过透射电子显微镜和原子力显微镜确认了这种硬结构域的存在。本文报道的过氧化物固化的EIIR复合材料具有简单的无毒配方和出色的机械性能,可用于药物封闭应用。