UV/ambient or UV/thermal dual-curable materials have received great attention due to their increasing applications in protective metal, plastic, glass and optical fiber coatings, and electronic packing materials. In this study, a UV/ambient dual-curable polysiloxane, epoxy/methacryloxy side-groups polysiloxane was synthesized and characterized by FTIR and 1H NMR. The synthesized polysiloxane was mixed with an epoxy methacrylate resin and an amine-curing agent, and then cured to obtain complete insoluble films directly under irradiation at room temperature. The obtained composite cured films with high gloss show a high visible light transmittance, close to 110% and 80%. They also possess excellent thermal, flexibility, hardness, and surface properties.
Tsai, M.F., Lee, Y.D. and Long, Y.C. ( 2000). Synthesis of a Polydimethylsiloxane Block Hydroxyl Grafted Acrylate Prepolymer Copolymer to Improve the Adhesion Between Silicone Rubber and Polyurethane by Induced Surface Reconstruction, J. Polym. Res., 7(2): 73-79.
3.
Bauer, F., Glasel, H.J., Decker, U., Ernst, H., Freyer, A., Hartmann, E., Sauerland, V. and Mehnert, R. ( 2003). Trialkoxysilane Grafting onto Nanoparticles for the Preparation of Clear Coat Polyacrylate Systems with Excellent Scratch Performance, Prog . Org. Coat., 47(2): 147-153.
4.
Beaucage, G. , Sukumaran, S., Clarson, S.J., Kent, M.S. and Schaefer, D.W. (1996). Symmetric, Isotopic Blends of Poly(Dimethylsiloxane). Macromolecules, 29(26): 8349-8356.
5.
Gonzalez, M. , Kadlec, P., Spepanek, P., Strachota, A. and Matejka, L. (2004). Crosslinking of Epoxy-Polysiloxane System by Reactive Blending. Polymer, 45(16): 5533-5541.
6.
Endruweit, A. , Johnson, M.S. and Long, A.C. (2006). Curing of Composite Components by Ultraviolet Radiation: A Review, Polym. Compos. , 27(2): 119-128.
7.
Lee, J.M. and Kim, D.S. (2007). Effect of Clay Content on the Ultraviolet-Curing and Physical Properties of Urethane-Acrylate/Clay Nanocomposites, Polym. Compos., 28(3): 325-330.
8.
Choi, S.J., Suh, K.Y. and Lee, H.H. ( 2008). Direct UV-Replica Molding of Biomimetic Hierarchical Structure for Selective Wetting, J. Am. Chem. Soc., 130(20): 6312-6313.
9.
Schonhorn, H. , Torza, S., Albarino, R.V., Vazirani, H.N. and Wang, T.T. (1979). Organic Polymeric Coatins for Silica-Fibers .1. UV-Curing Epocy Acryate, J. Appl. Polym. Sci., 23(1): 75-84.
10.
Alagar, M., Ashok Kumar, A., Anand Prabu, A. and Rajendran, A. ( 2004). Modification of Siliconized Epoxy Resin Using Multifuctional Silanes, Int. J. Polym. Mater., 53(1): 45-58.
11.
Si, Q.F. , Fan, X.D., Liu, Y.Y., Kong, J., Wang, S.J. and Qiao, W.Q. (2006). Synthesis and Characterization of Hyperbranched-Poly(Siloxysilane)-based Polymeric Photoinitiators, J. Polym. Sci., Part A: Polym. Chem., 44(10): 3261-3270.
12.
Yuan, H.Y., Lu, X.Y., Zeng, Z.H., Yang, J.W. and Chen, Y.L. ( 2004). Allyl Ether-Modified Unsaturated Polyesters for UV/Air Dual-curable Coatings. I: Synthesis and Characterization of the Oligomers and their Cured Films, J. Appl. Polym. Sci., 92(5): 2765-2770.
13.
Sangermano, A. , Malucelli, G., Priola, A. and Manea, M. (2006). Synthesis and Characterization of Acrylate-Oxetane Interpenetrating Polymer Networks through a Thermal-UV Dual Cure Process, Prog. Org. Coat., 55(3): 225-230.
14.
Sangermano, M. , Voit, B., Sordo, F., Eichhorn, K.J. and Rizza, G. (2008). High Refractive Index Transparent Coatings Obtained Via UV/Thermal Dual-cure Process. Polymer, 49(8): 2018-2022.
15.
Trey, S.M., Sidenvall, P., Alavi, K., Stahlberg, D. and Johansson, M. ( 2009). Dual Cure (UV/Thermal) Primers for Composite Substrates - Effect of Surface Treatment and Primer Composition on Adhesion, Prog. Org. Coat., 64(4): 489-496.
16.
Yano, H., Sugiyama, J., Nakagaito, A.N., Nogi, M., Matsuura, T., Hikita, M. and Handa, K. ( 2005). Optically Transparent Composites Reinforced with Networks of Bacterial Nanofibers, Adv. Mater., 17(2): 153-155.
17.
Hou, S.S. , Chung, Y.P., Chan, C.K. and Kuo, P.L. (2000). Function and Performance of Silicone Copolymer. Part IV. Curing Behavior and Characterization of Epoxy-Siloxane Copolymers Blended with Diglycidyl Ether of Bisphenol-A, Polymer, 41(9): 3263-3272.
18.
Amerio, E., Sangermano, M., Colucci, G., Malucelli, G., Messori, M., Taurino, R. and Fabbri, P. ( 2008). UV Curing of Organic-Inorganic Hybrid Coatings Containing Polyhedral Oligomeric Silsesquioxane Blocks, Macromol. Mater. Eng., 293(8): 700-707.
19.
Park, S.J., Jin, F.L., Park, J.H. and Kim, K.S. ( 2005). Synthesis of a Novel Siloxane-containing Diamine for Increasing Flexibility of Epoxy Resins, Mater. Sci. Eng. A. , 399(1-2): 377-381.
20.
Sangermano, M., Bongiovanni, R., Malucelli, G., Roppolo, I. and Priola, A. (2006). Siloxane Additive as Modifier in Cationic UV Curable Coatings, Prog. Org. Coat. , 57(1): 44-49.
Tavana, H., Simon, F., Grundke, K., Kwok, D.Y., Hair, M.L. and Neumann, A.W. ( 2005). Interpretation of Contact Angle Measurements on Two Different Fluoropolymers for the Determination of Solid Surface Tension, J. Colloid. Interface. Sci., 291(2): 497-506.
