The pultrusion process of FRP doors and windows is a special process of composite material molding. The production efficiency is good during the production process and can be automatically controlled; the resin content in the molded product is controllable, and the fiber content is high, which can give full play to the material Enhancement effect; reasonable use of different reinforcement materials, enhanced designability, can make products have different requirements; length can be controlled at will, there is no waste of materials in the production process, and subsequent processing can save energy and reduce consumption.
There are many kinds of raw materials for pultrusion. In the production of products with a single cross-sectional shape, the unity of the product structure can have the disadvantage of low lateral strength; the material formed by the FRP pultrusion process basically determines the stretch and elasticity of the product, and enhances The material is the skeleton of the hollow profile, and the choice of resin can meet the requirements and processes of various profiles.
Auxiliary materials include internal mold release machines, coupling agents, curing agents, etc. The role of fillers is to improve the resin process or product performance and cost reduction.
Generally, inorganic fillers can increase mechanical strength, reduce volume shrinkage, enhance heat resistance and resin viscosity, and reduce fluidity.
