Gelcoats

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The first materials marketed as protective coatings for composites were pre-formulated, compounded products called gelcoats, which are used as ‘in-mould’ coatings. Today, this has become a highly specialized business involving colour technology, air release requirements, thick film build-up and rapid cure times to produce in-mould finished surfaces with excellent gloss, colour and surface integrity retention after years of environmental exposure.  Gelcoats are available in brush and spray versions and are best put down at a thickness of 0.5mm (approximately 500 g/m²). If they are too thin, poor cure occurs and fibre pattern will result. If they are too thick, crazing and cracking can occur and the laminate will be more susceptible to reverse impact, star cracking damage.

 This white tooling gelcoat is used for the  production of large patterns and negatives. The gelcoat has a sandable and polishable surface. Cured hardness is 83 D Shore. 

Max Use Temp:
65°C after post cure at 80°C

 This blue tooling gelcoat is typically used for the production of molds which have a good resistance to chemical agents (solvents in particular) and is therefore good for moulding...

Max Use Temp:
85°C after post cure at 80°C

Polyurethane foaming mold, polyurethane and polyester low pressure injection, contact mold, thermoforming die.

Max Use Temp:
130°C

 This dark blue tooling gelcoat is easily polished and it offers high chemical resistance. It is suitable for polyester and epoxy resin transfer moulds, polyurethane foam moulds and RIM...

Max Use Temp:
Tg 130°C

 Surface coating moulds or parts requiring a good abrasion resistance.

Max Use Temp:
120°C

Used in surface coat for production of foundry pattern, core box and tools which have to present a high abrasion resistance.

Max Use Temp:
90°C