新型炭材料（中英文）2024，Vol.39Issue(4)：681-691,11.DOI:10.1016/S1872-5805(23)60741-3
PES-C增韧E51/DETDA环氧树脂及其炭纤维复合材料的研究
Cardo poly(ether sulfone)toughened E51/DETDA epoxy resin and its carbon fiber composites
摘要
Abstract
A toughener that can effectively improve the interlaminar toughness in carbon fiber composites is crucial for various applications.We investigated,the toughening effects of phenolphthalein-based cardo poly(ether sulfone)(PES-C)on E51/DETDA epoxy and its carbon fiber composites(CFCs).Scanning electron microscopy showed that the phase structures of PES-C/epoxy blends change from island(of dispersed phase)structures to bi-continuous structures(of the matrix)as the PES-C content increased,which is associated with reaction-induced phase separation.After adding 15 phr PES-C,the glass transition temperature(Tg)of the blends increased by 51.5 ℃,and the flexural strength,impact strength and fracture toughness of the blends were improved by 41.1％,186.2％and 42.7％,respectively.These improvements could be attributed to the phase separation structure of the PES-C/epoxy sys-tem.A PES-C film was used to improve the mode-Ⅱ fracture toughness(GⅡC)of CFCs.The GⅡC value of the 7 μm PES-C film toughened laminate was improved by 80.3％compared to that of the control laminate.The increase in GⅡC was attributed to cohesive failure and plastic deformation in the interleaving region.关键词
环氧树脂/炭纤维复合材料/酚酞聚芳醚砜/断裂韧性Key words
Epoxy resin/CFRP/PES-C/Toughness分类
通用工业技术引用本文复制引用
武荣鹏,张兴华,魏兴海,经德齐,苏维国,张寿春..PES-C增韧E51/DETDA环氧树脂及其炭纤维复合材料的研究[J].新型炭材料（中英文）,2024,39(4):681-691,11.基金项目
This work was supported by the Key Research and Development Program of Shanxi Province(202003D111002),Major Science and Technology Project in Shanxi Province(202101040201003),the National Natural Science Foundation of China(51903249)and the Innovation Fund Project of Shanxi Institute of Coal Chemistry,Chinese Academy of Sciences(SCJC-XCL-2022-12). 山西省重点研发计划资助项目(202003D111002) （202003D111002）
山西省科技重大专项计划(202101040201003) （202101040201003）
国家自然科学基金(51903249) （51903249）
中国科学院山西煤炭化学研究所创新基金项目(SCJC-XCL-2022-12). （SCJC-XCL-2022-12）
