What raw materials do FRP pultrusion require?
Core material: generally does not use, the existing PU foam material as the core material, and outside as a continuous extrusion frame shaped profiles, as insulation panels.
Fiber: pultruded glass fiber roving, continuous felt, stitch woven felt, stitch woven composite felt, fabric, glass fiber surface mat, polyester fiber surface felt, etc.;
Resin: commonly used unsaturated polyester resin, epoxy resin, vinyl ester resin, phenolic resin;
