Modified epoxy resin as well as preparation method and application thereof

The invention provides modified epoxy resin as well as a preparation method and application thereof, and belongs to the technical field of hydrophobic materials. The epoxy resin is modified by adopting a low-surface-energy substance, so that the hydrophobicity of the epoxy resin can be improved; the epoxy resin with four degrees of functionality is adopted as matrix resin for modification, in the molecular structure of the epoxy resin, each molecule has four epoxy functional groups, a large number of epoxy functional groups are still reserved after modification, the modified product has a high epoxy value, a compact three-dimensional network structure can be formed after curing, and the curing performance of the epoxy resin is improved. And the resistance of the coating to a corrosive solution can be improved. In addition, the modification process is easy to control, and the reaction endpoint can be very easily judged according to the acid value of the system. 本发明提供了一种改性环氧树脂及其制备方法和应用，属于疏水材料技术领域。本发明采用低表面能物质对环氧