Epoxy resin is a polymer, a general term for a class of polymers that contain more than two epoxy groups in the molecule.

 

Epoxy resin is a polymer, a general term for a class of polymers that contain more than two epoxy groups in the molecule. It is the condensation product of epichlorohydrin and bisphenol A or polyol. It is a thermosetting resin because of the chemical activity of the epoxy group, which can be made to open the ring by a variety of compounds containing active hydrogen and cured and cross-linked to generate a mesh structure.

 

 

Epoxy resin has the following characteristics.

 

Strong Adhesion and High Mechanical Strength

Since there are various polar groups in the molecule, such as hydroxyl (-OH) and ether groups (-O-). Due to the polarization of these groups, the epoxy resin molecules and adjacent surface electromagnetic suction, and epoxy group and the metal surface containing active hydrogen to form a chemical bond bond is very firm, especially with the glass surface to generate a chemical bond, therefore, the bonding force is particularly strong, and can be bonded with a variety of materials, and has the reputation of being an "all-purpose adhesive".

 

Good Corrosion Resistance

Epoxy resin has good resistance to alkali, and good resistance to acids and organic solvents. Acid anhydride as a curing agent can also be resistant to acid.

 

Heat Resistance is Good

Heat deflection temperature is higher than polyester. Especially heat-curing products, by changing the curing agent, can significantly increase the heat deflection temperature, some heat stability to 250 ℃ or more, the larger the molecular weight, the smaller the heat stability.

 

Abrasion Resistance

Epoxy resins are resistant to abrasion, cracking and peeling, including corrosion or damage caused by chemical or environmental degradation.

 

Moisture Resistance

Epoxy resins are very resistant to moisture, resist surface degradation due to permeability, and some formulations can even be applied underwater.

 

Long Shelf Life

Epoxy resin products have a long shelf life. As long as it is not mixed, epoxy resins can sit in a garage for several years (or more) without losing their effectiveness.
 

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