Effect of graphene nanosheets and layered double hydroxides on the flame retardancy and thermal degradation of epoxy resin

被引:55
作者
Liu, Shan [1 ,2 ]
Yan, Hongqiang [2 ]
Fang, Zhengping [1 ,2 ]
Guo, Zhenghong [2 ]
Wang, Hao [3 ]
机构
[1] Zhejiang Univ, Inst Polymer Composites, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Ningbo Inst Technol, Lab Polymer Mat & Engn, Ningbo 315100, Zhejiang, Peoples R China
[3] Univ So Queensland, Ctr Excellence Engn Fiber Composites, Toowoomba, Qld 4350, Australia
基金
中国国家自然科学基金;
关键词
POLYMER NANOCOMPOSITES; MECHANICAL-PROPERTIES; COMPOSITES;
D O I
10.1039/c4ra01267d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The effects of graphene nanosheets (GNS) and layered double hydroxides (LDH) on morphology, flame retardancy and thermal degradation of epoxy resin (ER) were investigated. LDH was exfoliated in ER/GNS/LDH nanocomposites, while GNS was partially exfoliated and partially agglomerated into small clusters. Since not all of the GNS had good dispersion, the compactness and barrier properties of residual char in ER/GNS/LDH were inferior to ER/GNS and ER/LDH. However, the simultaneous addition of GNS and LDH created an additional GNS-LDH interface, which could increase interaction in the melt and inhibit the flammable drips of ER and thus limit the flame propagation during combustion. As a result, a synergistic effect of simultaneous addition of GNS and LDH to improve the flame retardancy of ER was realized. The LOI value of ER was increased from 15.9 to 23.6 by adding 0.5 wt% of GNS and 0.5 wt% of LDH. In comparison, the LOI value was 19.5 and 21.7 when GNS or LDH was added separately, at the same level, 1 wt%. Furthermore, both GNS and LDH can increase the thermal stability of ER; there was a synergistic effect between them to decrease the THR of ER from 33.4 to 24.6.
引用
收藏
页码:18652 / 18659
页数:8
相关论文
共 22 条
[1]   Mechanical and flame-retardant properties of epoxy/Mg-Al LDH composites [J].
Becker, Cristiane M. ;
Gabbardo, Aline D. ;
Wypych, Fernando ;
Amico, Sandro C. .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2011, 42 (02) :196-202
[2]   Preparation of clay/epoxy nanocomposites by layered-double-hydroxide initiated self-polymerization [J].
Chan, Ying-Nan ;
Juang, Tzong-Yuan ;
Liao, Yi-Lin ;
Dai, Shenghong A. ;
Lin, Jiang-Jen .
POLYMER, 2008, 49 (22) :4796-4801
[3]   Constructing hierarchically structured interphases for strong and tough epoxy nanocomposites by amine-rich graphene surfaces [J].
Fang, Ming ;
Zhang, Zhen ;
Li, Jianfeng ;
Zhang, Hongdong ;
Lu, Hongbin ;
Yang, Yuliang .
JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (43) :9635-9643
[4]   In Situ Polymerization of Graphene, Graphite Oxide, and Functionalized Graphite Oxide into Epoxy Resin and Comparison Study of On-the-Flame Behavior [J].
Guo, Yuqiang ;
Bao, Chenlu ;
Song, Lei ;
Yuan, Bihe ;
Hu, Yuan .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2011, 50 (13) :7772-7783
[5]  
Jeffrey RP, 2011, POLYMER, V52, P5
[6]   Edge-functionalized graphene-like platelets as a co-curing agent and a nanoscale additive to epoxy resin [J].
Kim, Kyung-Su ;
Jeon, In-Yup ;
Ahn, Soo-Na ;
Kwon, Young-Do ;
Baek, Jong-Beom .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (20) :7337-7342
[7]   Effect of graphene nanosheets on morphology, thermal stability and flame retardancy of epoxy resin [J].
Liu, Shan ;
Yan, Hongqiang ;
Fang, Zhengping ;
Wang, Hao .
COMPOSITES SCIENCE AND TECHNOLOGY, 2014, 90 :40-47
[8]   Strengthening and toughening effects of layered double hydroxide and hyperbranched polymer on epoxy resin [J].
Lv, Shichang ;
Yuan, Yan ;
Shi, Wenfang .
PROGRESS IN ORGANIC COATINGS, 2009, 65 (04) :425-430
[9]   Flame retarded polymer nanocomposites: Development, trend and future perspective [J].
Ma HaiYun ;
Song PingAn ;
Fang ZhengPing .
SCIENCE CHINA-CHEMISTRY, 2011, 54 (02) :302-313
[10]   Comparison of filler percolation and mechanical properties in graphene and carbon nanotubes filled epoxy nanocomposites [J].
Martin-Gallego, M. ;
Bernal, M. M. ;
Hernandez, M. ;
Verdejo, R. ;
Lopez-Manchado, M. A. .
EUROPEAN POLYMER JOURNAL, 2013, 49 (06) :1347-1353