Understanding Low Exothermic Reaction in Epoxy Resins

What Is a Low Exothermic Reaction?

During the curing of epoxy resins, an exothermic (heat-producing) reaction naturally occurs as the resin and hardener combine. A low exothermic reaction means the epoxy generates less heat throughout curing. This control is especially important with thick pours—such as those up to 10cm—where excess heat can cause issues like cracking, yellowing, or bubble formation.

Benefits for Deep Pour & Table Casting

Epoxies engineered for a low exothermic reaction, like Epoxytable 10-Ten, are ideal for deep casting tasks. They allow you to pour layers up to 10cm safely without risking overheating or rapid cure, which can damage your work. Low heat output helps preserve clarity and ensures a bubble-free, glass-like finish. Additionally, slower and controlled curing provides more working time for artisans to perfect their projects.

Practical Considerations for Buying & Use

• If your project involves thick layers or large moulds, always check the resin’s exothermic profile.
• Avoid using fast-curing or high-exotherm resins in large volumes—these are suited only for thin layers.
• Follow all mixing, pouring, and cure time recommendations to ensure a successful result.