The reinforcing material is the supporting skeleton of the FRP product, which basically determines the mechanical properties of the pultruded product. The use of the reinforcing material also has a certain effect on reducing the shrinkage of the product and increasing the thermal deformation temperature and low temperature impact strength.
In the design of FRP products, the selection of reinforcing materials should fully consider the molding process of the product, because the type, laying method and content of reinforcing materials have a great influence on the performance of FRP products, and they basically determine the mechanical strength and elastic modulus of FRP products. The performance of pultruded products using different reinforcing materials is also different.
In addition, while meeting the product performance requirements of the molding process, the cost should also be considered, and cheap reinforcing materials should be selected as much as possible. Generally, the untwisted roving of glass fiber strands is lower in cost than fiber fabrics; the cost of felt is lower than that of cloth, and the impermeability is good. , but the strength is low; the alkali fiber is cheaper than the alkali-free fiber, but as the alkali content increases, its alkali resistance, corrosion resistance, and electrical properties will decline.
Post time: Jun-29-2022