Share This Article:

Thermal and Optical Properties of Epoxy/Siloxane Hybrimer Based on Sol-Gel-Derived Phenyl-Siloxane

Full-Text HTML XML Download Download as PDF (Size:2971KB) PP. 49-59
DOI: 10.4236/ojcm.2015.53008    4,282 Downloads   4,988 Views   Citations

ABSTRACT

A hybrimer based on epoxy resin and phenyl-siloxane was prepared by polymerization and a solgel condensation reaction in which Eporite-904 (807 g/eq) bisphenol-A-type epoxy resin, 3-isocyanatopropyltriethoxysilane (IPTES) and phenyltriethoxysilane (PTEOS) acted as precursors. The thermal and optical properties of the epoxy/siloxane hybrimer were studied. The thermogravimetric analysis (TGA) results implied that the hybrimer could increase the crosslink density and enhance the thermal properties. The optical properties were measured after thermal and UV aging. The refractive indexes of the epoxy/siloxane hybrimers were 1.66 - 1.70, and the transmittances of the cured hybrimers were above 90% in the visible wavelength. After a 120°C/24-h thermal aging test, the decreases in the refractive index and transmittance were less than 5% and 20% respectively. The epoxy/siloxane hybrimers also showed low discoloration upon thermal aging at 120°C for 24 h under an air atmosphere.

Cite this paper

Wu, K. , Cheng, K. , Yang, C. , Wang, C. and Liu, C. (2015) Thermal and Optical Properties of Epoxy/Siloxane Hybrimer Based on Sol-Gel-Derived Phenyl-Siloxane. Open Journal of Composite Materials, 5, 49-59. doi: 10.4236/ojcm.2015.53008.

References

[1] Mehr, M.Y., van Driel, W.D., Jansen, K.M., Deeben, P., Boutelje, M. and Zhang, G.Q. (2013) Photodegradation of Bisphenol A Polycarbonate under Blue Light Radiation and Its Effect on Optical Properties. Optical Materials, 35, 504-508.
http://dx.doi.org/10.1016/j.optmat.2012.10.001
[2] Kim, S.M., Lee, K.C., Yu, Y.M., Baek, J.H. and Jung, G.Y. (2009) Wafer-Level Packaged Light-Emitting Diodes Using Photodielectric Resin. IEEE Electron Device Letters, 30, 638-641.
http://dx.doi.org/10.1109/LED.2009.2019834
[3] Yang, S.C., Kim, J.S., Jin, J.H., Kwak, S.Y. and Bae, B.S. (2010) Thermal Resistance of Cycloaliphatic Epoxy Ry- brimer Based on Sol-Gel Derived Oligosiloxane for LED Encapsulation. Journal of Applied Polymer Science, 117, 2140-2145.
http://dx.doi.org/10.1002/app.31702
[4] Wang, H., Lee, K.S., Ryu, J.H., Hong, C.H. and Cho, Y.H. (2008) Active Packaging Method for Light-Emitting Diode Lamps with Photosensitive Epoxy Resins. IEEE Photonics Technology Letters, 20, 87-91.
http://dx.doi.org/10.1109/LPT.2007.910760
[5] Kim, J.P., Jang, M.S., Kim, W.H., Joo, J.Y., Cho, J.H. and Kim, D.W. (2012) Improvement in the Color Uniformity of LED by Microspheres Generated from Phase Separation. Optical Materials, 34, 1614-1617.
http://dx.doi.org/10.1016/j.optmat.2012.04.009
[6] Gao, N., Liu, W.Q., Yan, Z.L. and Wang, Z.F. (2013) Synthesis and Properties of Transparent Cycloaliphatic Epoxy- Silicone Resins for Opto-Electronic Devices Packaging. Optical Materials, 35, 567-575.
http://dx.doi.org/10.1016/j.optmat.2012.10.023
[7] Tao, P., Viswanath, A., Schadler, L.S., Benicewicz, B.C. and Siegel, R.W. (2011) Preparation and Optical Properties of Indium Tin Oxide/Epoxy Nanocomposites with Polyglycidyl Methacrylate Grafted Nanoparticles. ACS Applied Ma- terials & Interfaces, 3, 3638-3645.
http://dx.doi.org/10.1021/am200841n
[8] Hsu, C.W., Ma, C.M., Tan, C.S., Li, H.T. and Huang, S.C. (2012) Effect of Thermal Aging on the Optical, Dynamic Mechanical, and Morphological Properties of Phenylmethylsiloxane-Modified Epoxy for Use as an LED Encapsulant. Materials Chemistry and Physics, 134, 789-796.
http://dx.doi.org/10.1016/j.matchemphys.2012.03.070
[9] Huang, W., Zhang, Y., Yu, Y.Z. and Yuan, Y.X. (2007) Studies on UV-Stable Silicone-Epoxy Resins. Journal of Appl- ied Polymer Science, 104, 3954-3959.
http://dx.doi.org/10.1002/app.26188
[10] Vanlathem, E., Norris, A.W., Bahadur, M., DeGroot, J. and Yoshitake, M. (2006) Novel Silicone Materials for LED Packaging and Optoelectronics Devices. Proceedings of SPIE, 6192, 619202-619209.
[11] Morita, Y., Tajima, S., Suzuki, H. and Sugino, H. (2008) Cationic Copolymerization of Epoxy Siloxane Monomer with Liquid Poly-Butadiene and Its Light Emitting Diode Encapsulation. Journal of Applied Polymer Science, 109, 1808- 1813.
http://dx.doi.org/10.1002/app.28212
[12] Lin, Y.H., You, J.P., Lin, Y.C., Tran, N.T. and Shi, F.G. (2010) Development of High-Performance Optical Silicone for the Packaging of High-Power LEDs. IEEE Transactions on Components, Packaging, and Manufacturing Technology, 33, 761-766.
http://dx.doi.org/10.1109/TCAPT.2010.2046488
[13] Choi, J.K., Lee, D.H., Rhee, S.K. and Jeong, H.D. (2010) Observation of Tunable Refractive Indices and Strong Intermolecular Interactions in Newly Synthesized Methylene-Biphenylene-Bridged Silsesquioxane Thin Films. Journal of Physical Chemistry C, 114, 14233-14239.
http://dx.doi.org/10.1021/jp909287f
[14] Roy, P.K., Iqbal, N., Kumar, D. and Rajagopal, C. (2014) Polysiloxane-Based Core-Shell Microspheres for Toughen- ing of Epoxy Resins. Journal of Polymer Research, 21, 348-357.
http://dx.doi.org/10.1007/s10965-013-0348-5
[15] Yang, S.C., Kim, J.S., Jin, J.H., Kwak, S.Y. and Bae, B.S. (2011) Cycloaliphatic Epoxy Oligosiloxane-Derived Hybrid Materials for a High-Refractive Index LED Encapsulant. Journal of Applied Polymer Science, 122, 2478-2485.
http://dx.doi.org/10.1002/app.34375
[16] Chiu, Y.C., Ma, C.C., Liu, F.Y., Chiang, C.L., Riang, L. and Yang, J.C. (2008) Effect of P/Si Polymeric Silsesqui- oxane and the Monomer Compound on Thermal Properties of Epoxy Nanocomposite. European Polymer Journal, 44, 1003-1011.
http://dx.doi.org/10.1016/j.eurpolymj.2008.01.033
[17] Kim, J.S., Yang, S.C. and Bae, B.S. (2010) Thermally Stable Transparent Sol-Gel Based Siloxane Hybrid Material with High Refractive Index for Light Emitting Diode (LED) Encapsulation. Chemistry of Materials, 22, 3549-3555.
http://dx.doi.org/10.1021/cm100903b
[18] Chiang, C.L., Chang, R.C. and Chiu, Y.C. (2007) Thermal Stability and Degradation Kinetics of Novel Organic/ Inorganic Epoxy Hybrid Containing Nitrogen/Silicon/Phosphorus by Sol-Gel Method. Thermochimica Acta, 453, 97- 104.
http://dx.doi.org/10.1016/j.tca.2006.11.013

  
comments powered by Disqus

Copyright © 2017 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.