A bio-based epoxy resin derived from p-hydroxycinnamic acid with high mechanical properties and flame retardancy

编号 020037402

推送时间 20221219

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 A bio-based epoxy resin derived from p-hydroxycinnamic acid with high mechanical properties and flame retardancy

来源期刊 Chinese Chemical Letters

期 第374期

发表时间 20221101

关键词 Epoxy resin;  Bio-based;  p-Hydroxycinnamic acid;  Mechanical performance;  Intrinsic flame retardancy; 

摘要       Recent advances in epoxy resins have been forward to achieving high mechanical performance, thermal stability, and flame retardancy. However, seeking sustainable bio-based epoxy precursors and avoiding introduction of additional flame-retardant agents are still of increasing demand. Here we report the synthesis of p-hydroxycinnamic acid-derived epoxy monomer (HCA-EP) via a simple one-step reaction, and the HCA-EP can be cured with 4,4/-diaminodiphenylmethane (DDM) to prepare epoxy resins. Compared with the typical petroleum-based epoxy resin, bisphenol A epoxy resin, the HCA-EP-DDM shows a relatively high glass transition temperature (192.9 degrees C) and impressive mechanical properties (tensile strength of 98.3 MPa and flexural strength of 158.9 MPa). Furthermore, the HCA-EP-DDM passes the V-1 flammability rating in UL-94 test and presents the limiting oxygen index of 32.6%. Notably, its char yield is as high as 31.6% under N-2, and the peak heat rate release is 60% lower than that of bisphenol A epoxy resin. Such findings provide a simple way of using p-hydroxycinnamic acid instead of bisphenol A to construct high-performance bio-based thermosets.

服务人员 尚玮姣

服务院士 宋湛谦

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