Gelcoats and Barrier Layers

摘要

As the fibre reinforced plastics industry has grown and become more sophisticated,so has the demand for protective coatings and barrier layers.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 specialised 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.The new gelcoats provide both excellent protection for structural laminates as well as the levels of gloss and colour retention demanded by the motor industry.