Thermal and Mechanical Properties of Highly-Filled Polybenzoxazine-Alumina Composites

Abstract:

-Highly filled alumina polymer composites based on bisphenol-A/aniline benzoxazine resin (BA-a) were developed. The mechanical and thermal properties of these highly filled composites at various alumina filler contents from 0 to 85 % by weight were studied by dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). The experimental results revealed that the storage modulus (E') at room temperature was increased from 5.93 GPa of the neat polybenzoxazine up to about 45.27 GPa of the composites with the maximum alumina content of 83 % by weight. The glass-transition temperatures (Tg) of the composites systematically increased with increasing the alumina filler contents. The Tgs of the obtained composites having alumina content ranging from 50 to 83 % by weight were found to be 178°C to 188°C, which higher that the Tg of the polybenzoxazine, i.e. 176°C implying substantial interfacial interaction between the alumina particle and the polybenzoxazine.

• Periodical: Key Engineering Materials (Volume 545)
• Pages: 211-215
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.545.211
• Online since: March 2013
• Authors: Jirawat Kajornchaiyakul, Chanchira Jubsilp, Sarawut Rimdusit
• Keywords: Alumina, Highly Filled Systems, Mechanical Property, Polybenzoxazine, Thermal Property

References

[1] A. Krell, J. Klimke, T. Hutzler, Advanced spinel and sub-μm Al2O3 for transparent armour applications, J. Eur Ceram Soc. 29 (2009) 275-281.

DOI: 10.1016/j.jeurceramsoc.2008.03.024

[2] C.A. Harper, Handbook of ceramics glasses and diamonds, McGraw-Hill, New York, (1976).

[3] L. Kloc, P. Marecek and J. Fiala, Creep of Zr-doped alumina at very low creep rates, Mater. Sci. Eng., A. 64 (2004) 1551.

DOI: 10.1016/j.msea.2006.09.131

[4] K.R. Ahmad, S.B. Jamaludin, L.B. Hussain, Z.A. Ahmad, The influence of alumina particle size on sintered density and hardness of discontinuous reinforced aluminum metal matrix composite, J. Teknologi., 42 (2005) 49–57.

[5] H. Majidian, T. Ebadzadeh, E. Salahi, Effect of SiC additions on microstructure, mechanical properties and thermal shock behavior of alumina-mullite-zirconia composites, Mater, Sci. Eng., A. 530 (2011) 585-590.

DOI: 10.1016/j.msea.2011.10.027

[6] H. Ishida, U.S. Patent 5, 543, 516, (1996).

[7] H. Ishida, D.J. Allen, Physical and mechanical characterization of near-zero shrinkage polybenzoxazines, J. Polym Sci. 34 (1996) 1019-1030.

DOI: 10.1002/(sici)1099-0488(19960430)34:6<1019::aid-polb1>3.0.co;2-t

[8] X. Ning, H. Ishida, Phenolic materials via ring-opening polymerization synthesis and characterization of bisphenol-A based benzoxazines and their polymers, J. Polym. Sci., PartA: Chem. Ed. 32 (1994) 1121-1129.

DOI: 10.1002/pola.1994.080320614

[10] T. Takeichi, Y. Guo, T. Agag, Synthesis and Characterization of Poly(urethane-benzoxazine) Films as Novel Type of Polyurethane/Phenolic Resin Composites, J. Polym. Sci.: Part A: Polym. Chem. 38 (2000) 4165-4176.

DOI: 10.1002/1099-0518(20001115)38:22<4165::aid-pola170>3.0.co;2-s

[9] H. Ishida, D. J. Allen, Mechanical Characterization of Copolymers based on Benzoxazine and Epoxy, Polymer. 37 (1996) 4487-4495.

DOI: 10.1016/0032-3861(96)00303-5

[11] R. Sengupta, M. Bhattacharya, S. Bandyopadhyay, A.K. Bhowmick, A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites, Prog. Polym. Sci. 36 (2011) 638–670.

DOI: 10.1016/j.progpolymsci.2010.11.003

[12] H Ishida, S Rimdusit, Very high thermal conductivity obtained by boron nitride-filled polybenzoxazine, Thermochim Acta. 320 (1998) 177-186.

DOI: 10.1016/s0040-6031(98)00463-8