Epoxy Resin Sheet

Product Description

       Epoxy resin boards, also known as insulating boards, epoxy boards, or 3240 epoxy boards, feature strong adhesion and high shrinkage.

       Epoxy resins are organic macromolecular compounds that contain two or more epoxy groups in their molecules. With the exception of a few, their relative molecular weights are not high. The molecular structure of epoxy resins is characterized by the presence of reactive epoxy groups within the molecular chains, which can be located at the ends, in the middle, or form a ring structure. Due to the presence of these reactive epoxy groups, they can undergo cross-linking reactions with various hardeners, forming insoluble, non-meltable high polymers with a three-dimensional network structure.

Product Features

       A wide range of resin, hardener, and modifier systems can accommodate various application requirements, spanning from low viscosity to high melting point solids. The hardening options include various different hardeners, with epoxy resin systems capable of curing within a temperature range of 0 to 180°C.

       Strong Adhesion: The inherent polarity of the hydroxyl groups and ether bonds in the epoxy resin molecules contribute to its high adhesion to various materials. The low shrinkage during curing of epoxy resins results in minimal internal stress, which also aids in enhancing the adhesion strength.

       High shrinkage resistance: The reaction between the epoxy resin and the curing agent is carried out through direct addition reaction or the ring-opening polymerization of the epoxy groups in the resin molecules, without the release of water or other volatile by-products. Compared to unsaturated polyester resins and phenolic resins, they exhibit very low shrinkage during curing (less than 2%).

       Mechanical properties: The cured epoxy resin system exhibits excellent mechanical properties.

       Electrical Properties: The cured epoxy resin system is an excellent insulating material with high dielectric properties, resistance to surface leakage, and arc resistance.

       Chemical Stability: Typically, cured epoxy resin systems exhibit excellent alkaline, acidic, and solvent resistance. Like other properties of cured epoxy systems, chemical stability depends on the chosen resin and hardener. Appropriately selecting epoxy resins and hardeners can confer unique chemical stability properties.

       Dimensional Stability: The combination of many of the aforementioned properties contributes to the outstanding dimensional stability and durability of the epoxy system.

       Mold Resistant: The cured epoxy resin system is resistant to most molds and can [1]be used under harsh tropical conditions.