Improved Thermal Stability and Mechanical Properties of Epoxy Nanocomposites with Polyurethane and Ladder-like Polysilsesquioxane(LPS)
발표자
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초록
내용
Epoxy resins are widely used in coatings, adhesives, electrical and electronic component materials, and fiber-reinforced composite materials due to their excellent chemical resistance, electrical insulation properties, adhesiveness and reactivity. However they have poor thermal stability and brittleness because of the high degree of cross-linking after curing. In this study, LPS containing phenyl and epoxy groups was used to improve the overall performance of epoxy resins such as mechanical properties and thermal resistance. Polyurethane, which is characterized by excellent elasticity and good abrasion resistance and impact strength, was synthesized by urethane reaction of aliphatic and aromatic diisocyanate with polyether glycol. The thermal and mechanical properties of the epoxy nanocomposites with polyurethane and LPS were determined using FTIR, NMR, TGA, tensile test, flexure test, and impact test.