Peroxide Blend for Fast Cure (5-8 min gel)

Peroxide Blend for Fast Cure is a pre-formulated combination of MEKP and acetylacetone peroxide (or equivalent fast-acting peroxide components) specifically designed to deliver gel times of 5–8 minutes at 20°C with standard cobalt octoate levels. This product targets high-throughput composite fabrication operations such as spray-up and hand lay-up on production lines where rapid gelation and short demold cycles are needed to maximize output. The balanced peroxide species distribution provides fast initial gel without sacrificing through-cure quality — a challenge with standard MEKP at elevated dosages, which can lead to high exotherm and surface crazing. The blend is engineered to maintain good flow and wet-out in the first 3–4 minutes, followed by rapid gel onset, minimizing sagging on vertical mold surfaces. Compatible with standard cobalt octoate at 0.3–0.5% (6% solution), this product simplifies the dosing process by pre-blending the peroxide components. Recommended dosage is 2–3% on resin. Not recommended for thick laminates (>10 mm single pour) due to exotherm risk.