Abstract:
PURPOSE: A method for improving adhesion between a rubber and an epoxy resin-containing composite is provided to be hardened at the same time at high temperature through an epoxy chemical reaction between the composite and latent epoxy resin in the rubber without separate adhesive layer, thereby improving adhesion between the rubber and the composite. CONSTITUTION: A method for improving adhesion between a rubber and an epoxy resin-containing composite comprises a step of laminating the mixture of the rubber and the epoxy resin-containing composite and hardening the same at the same time. The rubber is mixed by 3.0-5.0wt% epoxy resin on the basis of total weight of the rubber and the epoxy resin. The rubber is an ethylene propylene diene rubber or ethylene propylene. The epoxy resin is aromatic amine hardening agent epoxy resin. The composite comprises a carbon fiber.
Abstract:
A clay compound modified with a tetra sulfide group, a rubber/clay nanocomposite containing the same, and methods for preparing them are provided to show excellent mechanical properties including tensile strength, elongation at break, tear strength and heat stability while maintaining flexibility. A clay compound is modified with a tetra sulfide group and particularly, is prepared by a method comprising the steps of: admixing a silane compound containing a tetra sulfide group to a water-soluble solvent and hydrating the admixture with an appropriate acid; and admixing clay to the resulting hydrated silane compound solution, followed by stirring. A rubber/clay nanocomposite contains the clay compound modified with the tetra sulfide group, and particularly, is prepared by a method comprising the steps of: mixing the clay compound modified with the tetra sulfide group, a rubber and a cross-linking agent, followed by stirring; and drying the resulting solution, and then heating the solution under a pressure to be cured. Further, the rubber is a silicon rubber which is poly dimethyl siloxane.