List of all the technologies we do at Selsurf
Key differences between epoxy and polyester resins
1. Bonding Strength: Epoxy is known for its higher bonding capabilities overall. An epoxy’s relative strength can hold up to 2,000 lbs. per square inch, while a polyester resin can hold less than 500 lbs. per square inch.
2. Resistance to Wear: Epoxy is more resistant to wearing, cracking and peeling, and corrosion or damage from chemical or environmental degradation. Polyester is more fragile and useful for temporary fixes, or low-stress use.
3. Resistance to Moisture: Epoxy is very moisture resistant. Polyester resin has minor resistance to moisture, is considered water-permeable, and can fracture easily.
4. Cure Time: Although cure times vary for both epoxy and polyester depending on the formulation and temperature at use, polyester generally has a faster cure time. Certain epoxies are also formulated for use in higher temperatures.
5. Odour: Polyester has a noticeably strong smell and can sometimes take your breathe away, although even though epoxy doesn't smell as bad it can be even more harmful for your health unless you use good mask protection and keep your filters fresh.
6. Shelf and flex Life: Epoxy has a much longer shelf life than polyester. Epoxy can absorb the stresses of expansion, contraction, shock, and vibration which is why you never see stress fractures or shatters in epoxy boards because they are able to flex through many impact situations where polyester is unable to do so in the same lifespan.
The properties of carbon fibres are high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion. This makes them very popular in aerospace, civil engineering, military, and motorsports, along with other competition sports. However, they are relatively expensive when compared with similar fibres like fibre glass.
Innegra features outstanding impact and compression strength properties. It is tougher and lighter than other available fibres. Innegra fabrics are best used with other fibres in a hybrid fabric or hybrid laminate as they produce quite a low modulus. Very light weight, white in colour and water resistant.