碳纤维湿法缠绕用中温固化环氧/酸酐树脂基体研究  

Moderate temperature curing EP/anhydride resin matrix for CF wet-winding

作　　者：芦武刚 程鹏辉 张冬冬 Lu Wugang;Cheng Penghui;Zhang Dongdong(Eighth Research Institute of Nuclear Industry,Shanghai 201800)

机构地区：[1]核工业第八研究所,上海201800

出　　处：《化工新型材料》2022年第8期171-175,187,共6页New Chemical Materials

基　　金：国家重点研发计划(2018YFB0905500)。

摘　　要：以改性环氧树脂为主体树脂,聚丙二醇二缩水甘油醚为增韧剂,液态酸酐MeTHPA为固化剂,2-乙基-4-甲基咪唑为促进剂,研制了一种T700级碳纤维湿法缠绕储能飞轮用中温固化环氧树脂基体,并研究了其性能。结果表明:树脂胶液45℃初试黏度为290mPa·s,适用期不低于2.0h;经“90℃/12h”固化后的基体拉伸强度为89.0MPa,拉伸模量为3.1GPa,断裂延伸率为5.5%;弯曲强度为113.8MPa;玻璃化转变温度为114.6℃;T700级碳纤维复合材料的横向拉伸强度和模量分别为48.0MPa和9.4GPa, NOL环层间剪切强度为56.4MPa, NOL环拉伸强度为2585MPa,静压破坏法测得复合材料纵向拉伸强度和模量分别为3819MPa和171.8GPa,断裂延伸率为2.08%。该树脂体系可中温固化,与T700级碳纤维的粘结性和匹配性好,适用于储能飞轮的碳纤维湿法缠绕成型工艺。Moderate temperature curing matrix resin used for T700 carbon fiber(CF) wet-winding was designed and stuied its properties, which used modified epoxy resin(EP) as the main resin, liquid anhydride MeTHPA as curing agent and 2,4-EMI as accelerate agent.The results shown that the beginning viscosity of the resin was 290 mPa·s and its operate life was no less than 2.0 hours@45℃.The tensile strength, stretch modulus and extensibility of the resin casting cured by at 90℃ for 12 hr was 89.0 MPa, 3.1 GPa and 5.5% respectively.Its bending strength was 113.8 MPa, its glass transition temperature(Tg) was 114.6℃.The transverse tensile strength and modulus of T700 CF composite was 48.0 MPa and 9.4 GPa respectively.The interlaminar shear strength of NOL ring was 56.4 MPa, the tensile strength of NOL ring was 2585 MPa.The longitudinal tensile strength, modulus and break extensibility was 3819 MPa, 171.8 GPa and 2.08% respectively.The resin matrix can been cured at moderate temperature, and had good cohesive and matching performances with T700 CF,and was suitable for the making of stored-energy flywheel by the way of wet-winding.

关 键 词：储能飞轮 中温固化 横向拉伸强度 纵向拉伸强度 

分 类 号：TQ433.437[化学工程]