Characteristics of epoxy resins: types and applications

Characteristics of epoxy resins: types and applications

Thursday, 12 September, 2024

Epoxy resin is a thermostable polymer that cures upon the addition of a hardener. Accordingly, given its resistance to high temperatures, it is widely used across the industrial sector.

Epoxy systems are found in a wide range of applications due to their excellent properties, which include:

High mechanical strength
Chemical resistance
Moisture resistance
High-temperature resistance
Strong adhesive properties
Excellent electrical insulation
Outstanding corrosion resistance

At Comindex, we offer a broad range of epoxy resins and reactive diluents to formulate coatings with optimal performance.

We also provide a selection of more sustainable epoxy resins, derived from renewable raw materials, for demanding formulations requiring an added level of sustainability.

Within our epoxy resin product range, we feature Bisphenol-A-based resins in both liquid and solid forms, Bisphenol-F-based resins, novolacs, cycloaliphatics, and solid resins, as well as reactive diluents.

Below, we highlight the applications for each type of epoxy resin:

Unmodified liquid Bisphenol-A-based epoxy resins are used in anti-corrosion coatings, industrial maintenance paints, underwater coatings, structural adhesives and civil engineering applications.
Solid Bisphenol-A-based epoxy resins have a low molecular weight and are supplied in solution form for easier processing. They offer faster drying times and a longer shelf life compared to standard liquid epoxy resins; also, they are used in anti-corrosive primers, marine paints and varnishes.
Unmodified Bisphenol-F-based epoxy resins provide excellent chemical resistance, strong mechanical properties and lower viscosity compared to Bisphenol-A-based resins. They help reduce crystallisation tendencies and are used in adhesives, laminates, coatings and civil engineering applications.
High-functionality novolac epoxy resins offer superior resistance to high temperatures and chemical exposure, making them ideal for corrosion-resistant coatings and industrial maintenance paints.
Cycloaliphatic epoxy resins provide enhanced durability under exposure to UV radiation, making them suitable for outdoor applications.
Solid epoxy resins are perfect for powder coating and can coatings applications.
Reactive diluents are based on various chemical structures — aliphatic, aromatic and cycloaliphatic — with different levels of functionality. They offer flexibility, adhesion, impact resistance and viscosity adjustment options.

Find the epoxy resin class at Comindex that best meets the needs of your formulations.

For further information on these products, please contact our team of technical sales advisors.

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