FR-4500 Tooling Board is a tough, high-density polyurethane tooling board product intended for use in master models, mold and foundry patterns, and composite tooling applications where a uniform, grain-free, dimensionally stable substrate is desired. (read more)
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Polyurethanes are renowned for their outstanding bonding capabilities, including excellent flexibility and durability in joining substrates such as rigid plastics, polyolefins, polycarbonate, nylon, Metton®, sheet molding compounds and fiberglass-reinforced plastics and metal to plastic assemblies. The adhesives can be used with minimal substrate preparation. Recent advances in urethane technology have yielded two-component systems with improved low-temperature flexibility, hydrolytic stability and sag resistance as well as a broader range or work lives, cure temperatures and packaging options. Rudolph Bros. & Co. offers a wide range of polyurethane adhesives featuring:
Wide range of viscosities
Gel times from two to twenty minutes
Rapid room-temperature cure cycles permitting handling in one to ten hours
Thixotropic, gap-filling properties
Outstanding flexibility with elongation characteristics from 250 to 400%
Good lap and tensile strengths from 1,700 to 2,800 psi
