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Unsaturated Polyester Resin for SMC (Sheet Molding Compound)
This is a high-performance molding resin designed for compression-molded composites requiring high mechanical strength, dimensional accuracy, and excellent surface finish. SMC Polyester Resin features controlled viscosity, low shrinkage behavior, and superior bonding with glass fibers and mineral fillers.
Optimized reactivity profile of SMC resin allows fast molding cycles, reduced material waste, and smooth class-A surface quality. SMC polyester resins can be sued to produce automotive body panels, truck & bus exterior parts, electrical enclosures, switchgear components, junction boxes, appliance housing, sanitary parts, doors, roofing panels, lightweight structural pieces, and corrosion-resistant industrial moldings. SMC-based composites are widely used in automotive, electrical, building infrastructure, renewable energy, and industrial equipment due to their long service life and reliability.
Composition generally include isophthalic or orthophthalic UPR resin, low-profile additives, styrene monomer, MEKP catalyst system, cobalt accelerator, hydro-treated fillers (CaCO₃ or ATH), glass fiber mats/chopped strands, thickeners (MgO/Mg(OH)₂), mold-release agents, pigments, and elevated temperature stabilizers. The formulation supports high filler loading without losing flow or mechanical performance.
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In SMC manufacturing, resin paste is compounded with fillers, fibers, and additives, then calendered into sheet form between carrier films. After maturation, the sheet is compression-molded under heat and pressure, cured into rigid composite parts, post-finished, and ready for industrial assembly. Key Advantages of SMC resin include high tensile & flexural strength, dimensional stability, impact resistance, electrical insulation, Class-A surface potential, corrosion resistance, low flammability, fast press-molding cycle, and excellent repeatability in mass-production environments. SMC-grade UPR provides significant weight reduction vs. metals while maintaining structural rigidity — making it ideal for modern composite engineering. IF YOU ARE WILLING TO BUY VARIETY OF POLYESTER RESINS FROM IRANIAN SUPPLIERS, PLEASE SCROLL DOWN AND SUBMIT YOUR REQUEST. |
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