How do I choose resin and fibre for composite lamination?

Matching Resin to Fibre Type

The two most common fibres for composites are carbon and glass fibre, each offering unique strengths. Pair these with a compatible resin—typically epoxy for most technical applications. For instance, “Carbon Resin” Epoxy is engineered to work effectively with both carbon and glass fibre, providing thorough impregnation for strong, resilient laminates. For repairs or smaller projects, a polyester resin kit with fibreglass mat is often a practical choice, especially where waterproofing is needed.

Selecting for Application and Ease of Use

Epoxy resins are suitable for projects requiring impact resistance and room temperature curing, making them ideal for professional and hobbyist applications. Polyester resins, like those in complete repair kits, work particularly well for emergency repairs on boats or outdoor equipment due to their strong bonds and included accessories. Always consider whether you need specialised properties such as high clarity, UV resistance, or specific layer thickness, which can be provided by clear product ranges like “Icrystal” epoxy resin for artistic or surface coating projects.

When Careful Selection Matters

• Structural components: Opt for high-impregnation epoxy resin with carbon or glass fibre for load-bearing or impact-prone areas.
• Outdoor or wet environments: Use waterproof polyester resin and fibreglass mat combinations for long-lasting, durable repairs.
• Detailed finishes: Choose clear or UV-resistant epoxies if your piece will be visible or exposed to sunlight.