PPG Industries' commercial coatings group is set to globally market and distribute a new urethane gel coat for the wind energy market. Developed and manufactured by Plasticolors Inc., the gel coat is available in clear for wind blades and pigmented for nacelles and is marketed as a viable alternative to epoxy and polyester gel coats.
The clear gel coat, AGC200, features excellent adhesion to epoxy, polyester, vinyl ester and urethane composite substrates, low viscosity for smooth application, and the option of having open time for lamination up to three days, the companies say. The clear and transparent liquid remains as such in a cured film. The pigmented gel coat, AGC10000 Series, features similar adhesion properties and open time for lamination along with excellent outdoor durability and dimensional stability.
Benefits offered by both gel coats include solvent-free composition, flexible urethane film, and the ability to be modified to meet application requirements. The clear gel coat enables visual inspection of composite laminate for defects and may be recoated using high-solids urethane and epoxy primers and urethane topcoats. The pigmented gel coat can be applied at lower film thickness than traditional gel coats and provides high gloss and distinctness of image.