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 290mPa·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 89.0MPa,3.1GPa and 5.5% respectively.Its bending strength was 113.8MPa,its glass transition temperature(Tg) was 114.6℃.The transverse tensile strength and modulus of T700 CF composite was 48.0MPa and 9.4GPa respectively.The interlaminar shear strength of NOL ring was 56.4MPa,the tensile strength of NOL ring was 2585MPa.The longitudinal tensile strength,modulus and break extensibility was 3819MPa,171.8GPa 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.
[1] 黄业青,张康助,王晓杰.碳纤维湿法缠绕用环氧树脂基体研究[J].热固性树脂,2007,22(1):27-29.
[2] 王秋野,尹航.复合材料贮飞轮发展与应用[J].纤维复合材料,2014,31(1):8-10.
[3] 汪勋超.碳纤维复合材料飞轮设计[D].武汉:武汉理工大学,2013.
[4] 惠鹏,祖磊,李书欣,等.大张力缠绕碳纤维复合材料高速飞轮转子研究[J].玻璃钢/复合材料,2018(3):5-12.
[5] 宋以国,李舯,李文逸.复合材料飞轮转子成型工艺的有限元模拟[J].机械科学与技术,2013,32(10):1456-1460.
[6] 孙曼灵.环氧树脂应用原理与技术[M].北京:机械工业出版社,2002,242-251.
[7] 王斌,谢瑞广,一种湿法缠绕用中温固化环氧树脂体系[J].化学与粘合,2003(6):271-282.
[8] 苏祖君,梁国忠,曾金芳,等.湿法缠绕用次中温固化的环氧树脂配方[J].纤维复合材料,2004(3):6-8.
[9] 谢瑞广,丘哲明,王斌,等.发射筒用中温固化树脂基体的研究[J].化学与粘合,2004(2):67-69.
[10] 谢丹,过松如,杭颂,等.复合材料缠绕制品的环氧树脂配方研究[J].热固性树脂,2000,15(1):23-25.
[11] 焦剑,蓝立文,宁荣昌.一种中温固化环氧树脂的研究[J].复合材料学报,2000,17(2):8-11.
[12] 梁滨,马蕊然.复合材料用中温固化环氧树脂体系的研究[J].复合材料学报,1993,10(1):9-13.
[13] 张春华,韩冰,黄玉东,等.TDE-85/芳香胺树脂基体及碳纤维复合材料性能[J].哈尔滨理工大学学报.2000,5(5):60-63.
[14] 芦武刚,吴肖萍.树脂基体对碳纤维复合材料横向拉伸强度的影响研究[J].中国核科学技术进展报告(第六卷),2019(2):404-409.
[15] 胡玉明编著.环氧固化剂及添加剂[M].北京:化学工业出版社,2011,84-85.
[16] 苏祖君,曾金芳,王华强.中温固化环氧树脂基体研究进展[J].玻璃钢/复合材料,2004(4):50-53.
[17] 吴健伟,于昕,付刚,等.甲基四氢苯酐中温固化低粘度环氧树脂体系的研究[J].化学与粘合,2001(4):160-167.
[18] 段华军.低粘度环氧树脂固化体系的研究[J].玻璃钢/复合材料,2003(1):32-34.
[19] 孙曼灵主编.环氧树脂应用原理与技术[M].北京:机械工业出版社,2002,174-175.
[20] 刘芝芳,吴志贤.酚醛环氧树脂固化动力学研究[J].南华大学学报(自然科学版),2006,20(4):108-110.
[21] 陆立明译著.热固性树脂热分析应用手册[M].上海:东华大学出版社,2009,91-96.
[22] Marloff R H,Daniel I M.Three-dimensional photoelastic analysis of a fiber-reinforced composite model[J].Experimental Meehanics,1969,9(4):156-162.
[23] 何曼君,张红东,陈维孝,等.编著.高分子物理(第三版)[M].上海:复旦大学出版社,2006,201-203.
基金资助
国家重点研发计划(2018YFB0905500)
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