Epoxy and Epoxy Resin
Our selection includes high-quality general-purpose epoxies, laminating epoxies, infusion epoxies, casting epoxies, epoxy foams, and epoxy adhesives.
Epoxies are two-component systems consisting of resin and hardener, with a precise mixing ratio. The reaction is exothermic, meaning it releases heat. When using epoxies, the temperature should be above 15 °C. Full hardness is typically achieved only after post-curing – some epoxy systems always require post-curing, while others cure fairly well at room temperature. However, optimal strength is always achieved after heat curing.
ADVANTAGES:
- Low shrinkage: Epoxy resins have very low shrinkage during curing. This ensures accurate shape and dimension retention.
- Good adhesion: Epoxy resins adhere well to a wide range of materials such as metal, wood, glass, and ceramics. This makes them versatile adhesives and repair materials.
- High elongation at break and modulus of elasticity: Epoxy resins have excellent mechanical strength. They can bend and stretch without permanent deformation, which is beneficial in many applications.
- Water absorption: Epoxy resins absorb very little water. They provide effective protection against moisture, which is important for example in fiber-reinforced plastic structures.
- Wide working range: Epoxy resins can be used across a wide temperature range. Some systems cure well at room temperature, while others require heat curing.
- Chemical resistance: Epoxy resins have good chemical resistance against many substances, making them suitable for a wide range of environments.
APPLICATIONS:
- Manufacturing of fiber-reinforced plastic parts: Epoxy is used to produce durable structures, castings, molds, and coatings for industrial needs. It is especially well-suited for boat building, machine components, and composite structures.
- Repairs of fiber-reinforced plastics: Epoxy resin is excellent for repairing boats, cars, aircraft, and other composite structures.
- Bonding: Epoxy adhesives can be used to bond a variety of materials, including metal, wood, glass, and ceramic parts.
- Casting molds and mold making: Epoxy resins can be used to make casting molds, for example for jewelry or small object production.
- Artistic projects: Epoxy allows for the creation of transparent layers, making it popular among artists. It can be mixed with colorants to achieve striking effects.
- Surface treatment: Epoxy resins can be used to coat wood, concrete, or metal. They provide protection against moisture, wear, and chemicals.
Smaller epoxy packages include both resin and hardener (indicated as H+K in the product name), while in larger containers the resin and hardener are sold separately. Hardeners are typically available in different working speeds (e.g. fast, STD = standard, slow, as indicated in the product name). Large packages are available by contacting our office at kevra@kevra.fi or +35896126820.
When working with epoxies, it is important to follow safety instructions, such as protecting the skin and avoiding allergic reactions. Proper waste handling is also essential when using epoxy resins.