Influence of flexible molecular structure on the cryogenic mechanical properties of epoxy matrix and carbon fiber/epoxy composite laminate

被引：43
作者：
Li, Shichao [1 ]
Chen, Duo [2 ]
Yuan, Yuhuan [2 ]
Gao, Chang [2 ]
Cui, Yunguang [3 ]
Wang, Hongyu [3 ]
Liu, Xin [3 ]
Liu, Minjing [3 ]
Wu, Zhanjun [3 ]
机构：
[1] Dalian Univ Technol, Sch Chem Engn, Dept Polymer Sci & Mat, State Key Lab Fine Chem, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, Sch Mat Sci & Engn, Fac Mech Engn Mat & Energy, Dalian 116024, Peoples R China
[3] Dalian Univ Technol, Fac Vehicle Engn & Mech, Sch Aeronaut & Astronaut, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
来源：
MATERIALS & DESIGN | 2020年 / 195卷
基金：
中国国家自然科学基金;
关键词：
Composite laminate; Epoxy resin; Toughness; Cryogenic mechanical properties; Thermal cycling; LIQUID-OXYGEN COMPATIBILITY; GRAPHENE OXIDE; CURING AGENT; FIBER; RESINS; PERFORMANCE; DISPERSION; BEHAVIOR; ENHANCEMENT; STRENGTH;
D O I：
10.1016/j.matdes.2020.109028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, a flexible polymer (polysiloxane) containing -Si-O-Si- molecular chains and epoxy groups (EPSE) was prepared. The effect of EPSE on the cryogenic mechanical properties of epoxy matrix and carbon fiber (CF) reinforced epoxy composite laminate was investigated in detail. At RT, with an EPSE content of 8 wt %, the failure strain and fracture toughness K-IC value of epoxy resin was improved by 69.4% and 10.4%, respectively. At cryogenic temperature, the tensile strength, failure strain and K-IC value of EPSE-epoxy reached a maximum of 207 MPa, 3.13%, and 2.60 MPa.m(1/2), respectively. Micro-morphology of the fracture surface indicated that the incorporation of EPSE improved the resistance to crack growth. The flexural strength of CF/EPSE-epoxy laminate at 77 K was 17.2% higher than that of CF/neat epoxy laminate, which mainly attributed to the flexible -Si-O-Si- molecular chains in EPSE reducing the CF/matrix interface thermal stress. The transition of failure mode resulted in the jagged-shape load fluctuations in the load-displacement curves of laminates at 77 K. Thermal cycling affecting the flexural strength of CF/EPSE-epoxy laminate was mainly ascribed to the release of part of thermal residual stress and the formation of interface debonding. (c) 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页数：10
相关论文
共 42 条
[1]   Nano-silica inclusion effects on mechanical and dynamic behavior of fiber reinforced carbon/Kevlar with epoxy resin hybrid composites [J].
Alsaadi, Mohamad ;
Bulut, Mehmet ;
Erklig, Ahmet ;
Jabbar, Arkan .
COMPOSITES PART B-ENGINEERING, 2018, 152 :169-179
[2]  
Chang R., 2010, J APPL POLYM SCI, V106, P3290
[3]   Simultaneously increasing cryogenic strength, ductility and impact resistance of epoxy resins modified by n-butyl glycidyl ether [J].
Chen, Zhen-Kun ;
Yang, Guo ;
Yang, Jiao-Ping ;
Fu, Shao-Yun ;
Ye, Lin ;
Huang, Yong-Gang .
POLYMER, 2009, 50 (05) :1316-1323
[4]   Simultaneously improving mode I and mode II fracture toughness of the carbon fiber/epoxy composite laminates via interleaved with uniformly aligned PES fiber webs [J].
Cheng, Chao ;
Chen, Zhengguo ;
Huang, Zhuang ;
Zhang, Chenyu ;
Tusiime, Rogers ;
Zhou, Jinli ;
Sun, Zeyu ;
Liu, Yong ;
Yu, Muhuo ;
Zhang, Hui .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2020, 129
[5]   Effects of adding graphene nanoplatelets and nanocarbon aerogels to epoxy resins and their carbon fiber composites [J].
Chiou, Yung-Chuan ;
Chou, Hsin-Yin ;
Shen, Ming-Yuan .
MATERIALS & DESIGN, 2019, 178
[6]   Modification of epoxy resins with functional silanes, polysiloxanes, silsesquioxanes, silica and silicates [J].
Chrusciel, Jerzy J. ;
Lesniak, Elzbieta .
PROGRESS IN POLYMER SCIENCE, 2015, 41 :67-121
[7]   Fatigue behavior of the 3D orthogonal carbon/glass fibers hybrid composite under three-point bending [J].
Fan, Wei ;
Dang, Wensheng ;
Liu, Tao ;
Li, Juanzi ;
Xue, Lili ;
Yuan, Linjia ;
Dong, Jingjing .
MATERIALS & DESIGN, 2019, 183
[8]   Enhanced mechanical properties of carbon fiber composites by grafting different structural poly(amido amine) onto fiber surface [J].
Gao, Bo ;
Zhang, Ruliang ;
Wang, Chengguo .
POLYMER TESTING, 2016, 56 :192-199
[9]   Toughening and self-healing fiber-reinforced polymer composites using carbon nanotube modified poly (ethylene-co-methacrylic acid) sandwich membrane [J].
Gao, Ya ;
Liu, Ling ;
Wu, Zhanjun ;
Zhong, Zheng .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2019, 124
[10]   Understanding compressive strength improvement of high modulus carbon-fiber reinforced polymeric composites through fiber-matrix interface characterization [J].
Ghaffari, Sarvenaz ;
Makeev, Andrew ;
Seon, Guillaume ;
Cole, Daniel P. ;
Magagnosc, Daniel J. ;
Bhowmick, Sanjit .
MATERIALS & DESIGN, 2020, 193
12345