30R7524423A_SDS.pdf

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Technical Data Sheet
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PCCR USA Composite Resins … Delivering high-quality products, technologies & solutions since 1947!
PCCR 752-4423 Flame-Retardant Unsaturated Polyester Resin
Description 752-4423 is a pre-promoted, thixed, unsaturated polyester resin formulated for
Class 1 flame retardance (ASTM E84 rating of < 25 flame spread). This resin meets the requirements of military spec MIL-R-7575. 752-4423 is also listed under the UL 5-VA and UL V-0 for parts that have a minimum of 125 mil (0.125) thickness. Features & = Complies with ASTM E84 Class 1 flame Performance = Complies with MIL-R-7575 Benefits = Listed under UL V-0 and 5-VA = Good wet-out * Good air release = Non-draining Suggested * Hand lay-up Applications * Spray-up = MIL-R-7575 panels z = UL 94 V-0 and 5-VA panels Typical Liquid Appearance Green Properties (77 F) Brookfield viscosity (RVT #2 @ 50 rpm), cP 430 Gel time (minutes), 1.0% Hi-point 90 MEKP. 11.0 Gel to peak time (minutes) 9.0 Peak exotherm ( F) 330 Weight per gallon (Ibs) 10.7 Nonvolatile mass (NVM %) 60.0 Monomer content (% by weight) 36.5 Typical Mechanical 0.125" Casting, HP-90 @ 77 F Properties Flexural strength (psi) ASTM D790 20,200 Flexural modulus (psi) ASTM D790 576,000 Tensile strength (psi) ASTM D638 8,900 Tensile modulus (psi) ASTM D638 546,700 Tensile elongation (%) ASTM D638 1.90 Barcol hardness (934.1) ASTM D2583 45 Heat deflection temperature ( F) ASTM D648 175