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Synthesis and Properties of a Flexible Curing Agent
Corresponding Author(s) : R.M. Wang
Asian Journal of Chemistry,
Vol. 25 No. 8 (2013): Vol 25 Issue 8
Abstract
This paper presents the synthesis of a new type of flexible epoxy curing agent and an approach to improve the toughness of epoxy resin by curing without reducing the strength and modulus of the resin-cured material. The results show that the degree of toughness reaches maximum values when the flexible curing agent is applied at weight percentages (wt. %) between 10 and 15 %. When the amount of flexible curing agent added to epoxy resin weight is 10 wt. %, the impact toughness and fracture toughness increases by 33.3 % and 96.3 %, respectively, compared with the pure epoxy resin. When the amount of flexible curing agent added to epoxy is 10 wt. %, the resulting impact thoughness of the material is 19.5 kJ m-2 at -50 ºC, the impact toughness of pure epoxy resin is only 7.96 kJ m-2.
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- E. Sancaktar and J. Kuznicki, Int. J. Adhes. Adhes., 31, 286 (2011).
- B. Li and X.-L. Li, Chem. Mater. Const., 19, 38 (2003).
- L.-Y. Wu, L. Luo and X.-M. Wen, Thermosetting Resin., 31, 22 (2008).
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- T. Okamatsu and M. Ochi, Polymer, 200, 721 (2002).
- Y. Xu, G-S. Shi, B.-P. Yang and Y.-H. Cui, Fiber Comp., 22, 3 (2005).
- L. Valette, J.-P. Pascault and B. Magny, Macromol. Mater. Eng., 288, 867 (2003).
References
E. Sancaktar and J. Kuznicki, Int. J. Adhes. Adhes., 31, 286 (2011).
B. Li and X.-L. Li, Chem. Mater. Const., 19, 38 (2003).
L.-Y. Wu, L. Luo and X.-M. Wen, Thermosetting Resin., 31, 22 (2008).
S.-J. Park and H.-C. Kim, J. Polym. Sci., Part B: Polym. Phys., 39, 121 (2001).
T. Okamatsu and M. Ochi, Polymer, 200, 721 (2002).
Y. Xu, G-S. Shi, B.-P. Yang and Y.-H. Cui, Fiber Comp., 22, 3 (2005).
L. Valette, J.-P. Pascault and B. Magny, Macromol. Mater. Eng., 288, 867 (2003).