Copyright (c) 2013 AJC
This work is licensed under a Creative Commons Attribution 4.0 International License.
Surface Modification of Ca(NO3)2·4H2O Crystals with Epoxy Resins at Normal Temperature Through a Mechanical Dry Method
Corresponding Author(s) : Dechun Liu
Asian Journal of Chemistry,
Vol. 25 No. 11 (2013): Vol 25 Issue 11
Abstract
In order to solve problem of Ca(NO3)2·4H2O crystals easy deliquescence at normal temperature, the surface modification of Ca(NO3)2·4H2O crystals with epoxy resins by a mechanical dry encapsulation process taken diethylenetriamine as curing agent in ethanol was investigated through FTIR, TG/DTA, optical microscopy and moisture absorption performance test in atmosphere. The results showed that the curing time of the epoxy resin was shortened sharply with the increase of its concentration and the increase of the concentration of curing agent. The optimized formula for Ca(NO3)2·4H2O crystals coated is of epoxy resin, ethanol and diethylenetriamine at the mass ratio of 7:1:1.05. About 5-7 % weight of Ca(NO3)2·4H2O crystals for formula coating materials has the best effects. It is suggested that the moisture absorption growth rate of these separate white granules increased slowly and effectively avoided Ca(NO3)2·4H2O crystals deliquescent at normal temperature. Furthermore, the thermal stability of the materials was enhanced dramatically.
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- P.S. Warren, L.K. Norman, L. Hartland and L. Elheim, J. Am. Chem. Soc., 49, 1958 (1927).
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References
P.S. Warren, L.K. Norman, L. Hartland and L. Elheim, J. Am. Chem. Soc., 49, 1958 (1927).
J. Harald and C.N. Erik, Cement Concrete Res., 25, 1766 (1995).
G. Carlos, G. Claudia and P. Carlos,Inorg. Chem. Commun., 20, 90 (2012).
G. Slobodan, V. Milan and D. Sanja, J. Chem. Eng. Data, 55, 1990 (2010).
T. Shi and W. Sun, J. Chin. Ceram. Soc., 36, 1031 (2008).
Q. Liang and R. Wang, Chem. Fertilizer Ind., 32, 21 (2005).
S. Dale, P. Jérôme, B. Colin and F.H. Jeffrey, Plant Cell, 14, 401 (2002).
T.H. Jiang, X.H. Zhan and J.C. Xue, Chin. J. Soil Sci., 37, 606 (2006).
B.P. Lidija, J.S. Verica, M.K. Jaroslav and L.M. Jadranka, J. Colloid Interf. Sci., 342, 333 (2010).
R. Suriyan, R. Yupaporn, S. Wimonlak and S. Nitinat, Mater. Sci. Eng. C, 32, 1428 (2012).
W.S. Chen, Y.L. Chang, H.I. Hsiang, F.C. Hsu and F.S. Yen, Ceram. Int., 37, 2347 (2011).
S.D. Chang, S. Kazuhisa, M. Junichiro and H. Toshiyuki, Ceram. Int., 38, 85 (2012).
M. Fujiwara, K. Shiokawa, K. Morigaki, Y.C. Zhu and Y. Nakahara, Chem. Eng. J., 137, 14 (2008).
A. Grondein and D. Bélanger, Fuel, 90, 2684 (2011).
C.Y. Chen and C.L. Liu, Ceram. Int., 37, 2353 (2011).
A.S. Singha and R.K. Rana, Carbohydr. Polym., 87, 500 (2012).
C.Q. Xu, W. Huang, Y.F. Zhou, D.Y. Yan, S.T. Chen and H. Huang, Radiat. Phys. Chem., 81, 426 (2012).
B. Deng, Y. Yu, B.W. Zhang, X.X. Yang, L.F. Li, M. Yu and J.Y. Li, Radiat. Phys. Chem., 80, 159 (2011).
S.S. Luz, F.R. Juan and S. Paula, Colloids Surf A, 390, 62 (2011).
H. Zhang and X. Wang, Colloids Surf. A, 332, 129 (2009).
H. Wang, J.F. Jia, H.Z Song, X. Hu, H.W. Sun and D.L. Yang, Ceram. Int., 37, 2181 (2011).
Q. Zhou and D. A.V. Morton, Adv. Drug Deliver. Rev., 64, 275 (2012).
Y.S. Hao, F.C Liu, H.W Shi, E.H. Han and Z.Y. Wang, Prog. Org. Coat., 71, 188 (2011).
C. Liang and H. Zhong, China Adhes., 15, 26 (2006).
I.A. Siddiquey, E. Ukaji, T. Furusawa, M. Sato and N. Suzuki, Mater. Chem. Phys., 105, 162 (2007).
J. Paulik, F. Paulik and M. Arnold, J. Therm. Anal., 27, 409 (1983).
Z. Dai, Y.F. Li, S.G. Yang, N. Zhao, X.L. Zhang and J. Xu, Eur. Polym. J., 45, 1941 (2009)