The invention discloses a single-component
epoxy modified
silicone sealant and a preparation method thereof. the
sealant is composed of, by
mass, 100 parts of
silane modified polyether resin, 10-50 parts of
epoxy resin, 80-150 parts of plasticizers, 150-300 parts of nano
calcium carbonate, 1-6 parts of first cross-linking agents, 3-10 parts of second cross-linking agents and 2-7 parts of catalysts. The advantages of the
epoxy resin and the
silane modified polyether resin are combined, the bonding
powder, the tensile strength, the elasticity and the
weather resistance of the
sealant can be improved, and the sealant can be used for the different fields such as constructional
engineering,
electronics, the automobile industry and space flight and
aviation. The sealant has the characteristics that the performance advantages of
silicone and the epoxy resin are combined, the
silicone and the epoxy resin are subjected to a cross-linking reaction with water molecules and the cross-linking agents under the action of the catalysts, and a three-dimensional spatial netty structure is formed. A cured
system is high in binding performance and excellent in mechanical performance and
weather resistance.