Nano-sized, functionalized organo-silicate fillers dispersed in the epoxy matrix are one approach that is investigated for improving the delamination resistance of fiber-reinforced composites. The variety of nano-silicate fillers available on the market, of processing conditions and the related characterization effort make it desirable to have a simple, easily analyzed screening method for both, nano-modified resins and laminates. An impact test using hail simulation equipment and visual assessment on glass-fiber laminates with nano-modified epoxy matrix yields rough indications of the effect of nano-modification on the fracture behavior of the specimens that correlate with more sophisticated macroscopic and microscopic characterization.
Unnikrishnan, K.P. and Thachil, E.T. (2006). Toughening of Epoxy Resins, Designed Monomers and Polymers, 9(2): 129-152.
2.
Warrior, N.A. , Turner, T.A., Robitaille, F. and Rudd, C.D. (2004). The Effect of Interlaminar Toughening Strategies on the Energy Absorption of Composite Tubes, Composites (A), 35(4): 431-437.
3.
Hussain, F., Hojjati, M., Okamoto, M. and Gorga, R.E. (2006). Polymer-matrix Nanocomposites, Processing, Manufacturing and Application: an Overview, Journal Composite Materials , 40(17): 1511-1575.
4.
Zhou, Y., Pervin, F., Biswas, M.A., Rangari, V.K. and Jeelani, S. (2006). Fabrication and Characterisation of Montmorillonite Clay-filled SC-15 Epoxy, Materials Letters, 60(7): 869-873.
5.
Kornmann, X. , Thomann, R., Mulhaupt, R., Finter, R. and Berglund, L. (2002). Synthesis of Amine-cured, Epoxy-layered Sillicate Nanocomposites: The Influence of the Silicate Surface Modification on the Properties, Journal of Applied Polymer Science, 86(10): 2643-2652.
6.
Brunner, A.J. , Necola, A., Rees, M., Gasser Ph. , Kornmann, X., Thomann, R. and Barbezat, M. (2006). The Influence of Silicate-based Nano-filler on the Fracture Toughness of Epoxy Resin, Engineering Fracture Mechanics, 73(16): 2336-2345.
7.
Yasmin, A., Luo, J.J., Abot, J.L. and Daniel, I.M. (2006). Mechanical and Thermal Behavior of Clay/Epoxy Nanocomposites, Composite Science and Technology, 66(14): 2415-2422.
8.
Kornmann, X. , Rees, M., Thomann, Y., Necola, A., Barbezat, M. and Thomann, R. (2005). Epoxy-layered Silicate Nanocomposite as Matrix in Glass Fiber-reinforced Composites, Composite Science and Technology, 65(14): 2259-2268.
9.
Dean, D., Obore, A.M., Richmond, S. and Nyairo, A. (2006). Multiscale Fiber-reinforced Nanocomposites: Synthesis, Processing and Properties, Composite Science and Technology , 66(13): 2135-2142.
10.
Haque, A., Shamsuzzoha, M., Hussain, F. and Dean, D. (2003). S2-Glass/Epoxy Polymer Nanocomposites: Manufacturing, Structures, Thermal and Mechanical Properties, Journal of Composite Materials, 37(20): 1821-1837.
11.
Lin, L.Y. , Lee, J.H., Hong C.h.E., Yoo, G.H. and Advani, S.G. (2006). Preparation and Characterisation of Layered Silicate/Glass Fiber/Epoxy Hybrid Nanocomposites via Vacuum-Assisted Resin Transfer Molding (VARTM), Composite Science and Technology , 66(13): 2116-2125.
12.
Siddiqui, N.A. , Woo, R.S.C., Kim, J.K., Leung, Ch.C.K. and Munir, A. (2007). Mode I Interlaminar Fracture Behavior and Mechanical Properties of CFRPs with Nanoclay-filled Epoxy Matrix , Composites (A), 38(2): 449-460.
13.
Standard EN ISO 15024 ( 2001). Fiber-reinforced Plastic Composites - Determination of Mode I Interlaminar Fracture Toughness, GIC, for Unidirectionally Reinforced Materials.
14.
Williams, J.G. and Ford, H. (1964). Stress-Strain Relationships for Some Unreinforced Plastics, Journal of Mechanical Engineering Science, 6(4): 405-417.
15.
Standard ISO 13586 (2000 ). Plastics - Determination of Fracture Toughness (GIC and KIC) - Linear Elastic Fracture Mechanics (LEFM) Approach.
16.
Standard EN ISO 14125 (1998). Fiber Reinforced Plastic Composites - Determination of Flexural Properties .
17.
Standard ISO 6603-2 (2000). Determination of Puncture Impact Behavior of Rigid Plastics, Part 2: Instrumented Impact Testing.
18.
Standard EN 13583 (2001). Flexible Sheets for Waterproofing - Bitumen, Plastic and Rubber Sheets for Roof Waterproofing - Determination of Hail Resistance.
