Intrinsically Anti-Flammable Apigenin-derived Epoxy Thermosets with High Glass Transition Temperature and Mechanical Strength

作     者：Hafezeh Nabipour Xin Wang Lei Song Yuan Hu Hafezeh Nabipour;Xin Wang;Lei Song;Yuan Hu

作者机构：State Key Laboratory of Fire ScienceUniversity of Science and Technology of ChinaHefei 230026China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2022年第40卷第10期

页      面：1259-1268,I0011页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22075265 and 22050410269) the Youth Innovation Promotion Association of the Chinese Academy of Sciences(No.2021459) 

主　　题：Bio-based epoxy thermosets Apigenin Intrinsic anti-flammability 

摘      要：In this work,apigenin was chosen as a raw material to synthesize a novel epoxy monomer(DGEA),while the bio-based epoxy resin was further obtained after curing with 4,4’-diaminodiphenylmethane(DDM).The control samples were prepared by curing diglycidyl ether of bisphenol A(DGEBA)with *** non-isothermal differential scanning calorimeter(DSC)method was utilized to further investigate the curing behavior and curing kinetics of the DGEA/DDM *** no flame retardant active elements,the DGEA/DDM thermoset still exhibited exceptional ***,the DGEA/DDM thermoset reached a V-0 rating in the UL-94 test and owned a high limiting oxygen index(LOI)value of 37.0%,while DGEBA/DDM resins were consumed completely in the vertical combustion test with a low LOI of 23.0%.Furthermore,the microscale combustion calorimetry(MCC)results manifested that compared with DGEBA/DDM resins,both PHRR and THR values of the DGEA/DDM resins were dropped by 84.0%and 57.6%,***,the DGEA/DDM resin also presented higher storage modulus and tensile strength compared with DGEBA/DDM ***,in contrast with that of the cured DGEBA/DDM one(156℃),the DGEA/DDM thermoset displayed an extremely high glass transition temperature(232℃).This study breaks new ground on how to produce biobased monomers with aromatic structures and achieve high-performance thermosetting polymers.