Low Smoke Flame Retardant Vinyl Ester

Low Smoke Flame Retardant Vinyl Ester is a halogen-free BPA vinyl ester resin formulated with a combination of reactive phosphorus FR monomer, ATH filler compatibility, and magnesium hydroxide co-synergist to achieve both low flame spread and drastically reduced smoke generation during fire events. This product addresses the critical life-safety issue in enclosed compartment fires (ships, rail tunnels, underground infrastructure) where toxic smoke inhalation is the primary cause of casualties.

The resin achieves: LOI >28%, NBS smoke chamber Dm <100 (optical density at peak), and CO/HCN release levels compliant with fire toxicity standards. When laminated with 40 phr ATH + 10 phr Mg(OH)2 filler combination, EN 45545-2 HL2 and IMO FTP Code Part 2 (smoke toxicity) compliance is achievable.

Viscosity at 25°C is 350-650 mPa·s, suitable for hand lay-up of vessel interior panels, rail car interior linings, and underground infrastructure structural panels. Mechanical properties are reduced versus standard VER: flexural strength 100-130 MPa. Post-cure at 80°C/2h recommended for maximum fire performance development.