ECO / inorganic nano-particle composite Mechanism The existence of nano-materials to give a high physical and mechanical properties of ECO resin, its strength, stiffness, toughness and heat resistance have greatly improved. Judging from the current study, the mechanism is as follows.
nanoparticles dispersed in the matrix, when matrix by shock generated between particles and matrix micro-cracks (craze); while the matrix between particles also produced plastic deformation to absorb impact energy, thereby achieve toughening results. With the finer particle size, particle surface area increases, particles and the substrate contact area between the increase.
Material adverse impacts, will produce more microcracks and plastic deformation, and thus absorb more impact energy, the toughening effect to improve. When the filler reaches a critical value added, the particles are too close between the materials produced by the shock too much micro-cracks and plastic deformation, and its development into the macro-stress cracking, so that impact performance.
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