Heat Resistant (Up to +180°C) Release Agents Suitable for Resin Casting

Heat Resistance in Release Agents

When casting resins—especially epoxy—temperatures can rise considerably during curing. A heat resistant release agent that tolerates up to +180°C is less likely to degrade or lose effectiveness mid-process. Among commonly used options, liquid waxes formulated for resin moulds are tested for heat tolerance and provide reliable anti-adhesion even at higher casting temperatures.

Options for Resin Casting

• Release wax: Products like Global A2 Release Wax coat mould surfaces to create a protective non-stick layer and remain effective up to +180°C.
• Silicone oils: Silicone-based oils help release cured resins and support repeated use of silicone moulds, though direct temperature specifications may vary—check each product for details.
• Release films: Glossy films such as “Shiny Shield” allow for bubble-free application to mould frames and can tolerate over 100°C, making them suitable for most resin pours but not the hottest systems.

To use, ensure your moulds are clean and dry, then apply the release agent with a brush or spray (for wax), a wipe (for oils), or adhere the film as directed. Reapply as needed, especially for intricate designs or repeated castings.

When This Matters

If your resin projects involve deep pours, high exothermic reactions, or casting against metal moulds—which all generate more heat—selecting a release agent validated for up to +180°C creates fewer risks of sticking or surface damage.