An integrated strategy to fabricate bio-based dual-cure and toughened epoxy thermosets with photothermal conversion property

编号 020034304

推送时间 20220516

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 An integrated strategy to fabricate bio-based dual-cure and toughened epoxy thermosets with photothermal conversion property

来源期刊 Chemical Engineering Journal

期 第343期

发表时间 20220401

关键词 Epoxidized soybean oil;  Furfural;  Dual-cure;  Epoxy thermosets;  Photothermal conversion; 

摘要 Developing lightweight and high-strength biomass derived multi-functional thermosets are of major interest and challenge. In this study, an integrated strategy was carried out to convert soybean oil, furfural, cardanol and turpentine into multi-functional thermosets. Firstly, the modified epoxidized soybean oil (ESOM) bearing epoxy and maleimide group was synthesized, which could perform step-growth polymerization and Diels-Alder reaction for the formation of dual-cure network. Secondly, a bio-based curing agent (CFMA) derived from furfural, cardanol and 1,8-p-menthane-diamine was synthesized by one step Mannich reaction. Then the dual curing reaction of CFMA and ESOM were applied to form sustainable and toughened epoxy thermosets with dual-cure network. In this integrated strategy, the epoxy thermosets inherited and fused the unique properties of each biomass resource. Moreover, the biomass content in the thermoset was above 89.0%. The formation of dual-cure network significantly enhanced the mechanical strength and toughness of the epoxy thermosets, and the mechanical properties could be easily tailored by changing the mass ratio of CFMA/ESOM or adjusting the curing time. Particularly, those epoxy thermosets showed a great potential application as a photothermal conversion coating with excellent photothermal conversion property, and the photothermal conversion efficiency was 45.0%. This work provides an efficient approach towards sustainable and intelligent epoxy thermoset materials.

服务人员 尚玮姣

服务院士 宋湛谦

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