An epoxy resin having a superhydrophobic layer and a method of making the same

By constructing a superhydrophobic layer and a conductive inhibition layer on the surface of epoxy resin, combined with micro-nano rough structures and low surface energy modification, the problems of water film formation and charge transport path of epoxy resin under high temperature and high humidity environment are solved, achieving excellent insulation stability and anti-flashover capability.

CN122145857APending Publication Date: 2026-06-05MEGAVOLT TECH (SUZHOU) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MEGAVOLT TECH (SUZHOU) CO LTD
Filing Date
2026-04-15
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing epoxy resins readily adsorb moisture to form a water film under high temperature and high humidity conditions, leading to increased leakage current, decreased surface resistivity, and reduced flashover voltage. Existing technologies are unable to effectively block the synergistic regulation of charge transport paths and moisture adhesion behavior.

Method used

By constructing a superhydrophobic layer and a conductive inhibition layer on the surface of epoxy resin, combined with micro-nano roughening structure and low surface energy modification, a Si–O–Si network structure is formed, which enables synergistic regulation of water adhesion behavior and charge migration behavior.

Benefits of technology

It significantly inhibits water film formation, increases surface resistivity, enhances flashover voltage, improves insulation reliability and flashover resistance, and maintains excellent stability during damp heat aging.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122145857A_ABST
    Figure CN122145857A_ABST
Patent Text Reader

Abstract

The application provides an epoxy resin with a super-hydrophobic layer and a preparation method thereof, and relates to the technical field of polymer insulating materials.The preparation method of the epoxy resin with a super-hydrophobic layer comprises the following steps: surface activation of a substrate: treating the surface of the cured epoxy resin substrate with plasma or alkali to introduce hydroxyl groups; constructing a silane anchoring layer; constructing a conductive inhibition layer; constructing a micro-nano rough structure layer: forming a micro-nano rough structure on the surface of the conductive inhibition layer by spraying or dipping nanoparticles; low surface energy modification; the super-hydrophobic performance of the epoxy resin is excellent: through the cooperation of the micro-nano rough structure and the fluorosilane low surface energy modification layer, the water contact angle is greater than or equal to 150 degrees, the rolling angle is less than 10 degrees, the formation of a water film on the surface can be significantly inhibited, and the adhesion and spreading of water in a humid environment are reduced; the wet-state insulation performance is greatly improved: the conductive inhibition layer introduces a large number of charge traps and prolongs the charge migration path.
Need to check novelty before this filing date? Find Prior Art