SLR-22 is a polyester resin used as a general Purpose Laminating Resin used with Fiberglass Fabrics to make mother-molds when supporting thin walled latex, urethane or silicone rubber molds. Use in conjunction with Fiberglass Mat, Cloth or Chopped strand fibers for reinforcement.
Polyester Resins consist of Base Resin (Casting, Laminating, Gel Coat) and require a Catalyst (MEKP) to be added to initiate cure. The amount of Catalyst to use is very small and varies between 0.5 to 2% of the Polyester resin used. The catalyst (MEKP) must be ordered separately. Ambient temperature conditions, type of resin system and amount of catalyst used, as well as the thickness of the part will affect the cure time of resin.
MEKP (RCHP-90) Catalyst for Polyester resins: Polyester resin cures by an exothermic (heat) reaction created by promoters (cobalt & amine) and activator Methyl Ethel Ketone Peroxide (MEKP). The reaction of polyester will occur at the thickest cross section sending out a wave of heat, which cures resin to a solid glass-like hardness. Temperature and moisture content can affect the rate of cure and the drying of part’s surface. See Technical Data Bulletin for more information.
