Scott Bader Co. Ltd. (Wollaston, U.K.) has introduced low-viscosity Crystic Crestapol 1210 resin for resin transfer molding (RTM) and pultrusion processes. Reportedly, the resin can be optimized to achieve cycle times of six to seven minutes for RTM. Rapid mold fill and demold are attainable, says the company, even with large composite parts. The resin requires the addition of a catalyst plus two accelerators. A partially pre-accelerated alternative, Crestapol 1210A, also is available, to which the user adds catalyst and a single accelerator. Both products cure effectively at ambient temperatures (less than 18°C/64°F) and reportedly attain significantly bet-ter mechanical proper-ties after 24 hours than typically can be achieved using conventional unsaturated polyester resins. Applications for the resins include railway furniture, domestic household doors and garage doors as well as general building and construction products, including modular buildings. The manufacturer says fire resistance and other special properties can be incorporated into the resins via fillers, making them suitable for use in for more demanding applications in automotive, rail transit, aerospace or marine products.
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