The use of FRP tiles in the construction industry is the most common nowadays, which is inseparable from its distinctive features, and then it also has its own shortcomings. If the deficiencies are dealt with correctly, FRP tiles will be better.
1. The interlayer shear strength is low, and the interlayer shear strength is borne by the resin, so it is very low.
Compensation method: It is possible to improve the interlayer adhesion by selecting techniques and using coupling agents. The most important thing is to avoid shearing between layers as much as possible during product design.
2. The elastic modulus of FRP tiles is low. The elastic modulus of FRP is twice as large as that of wood, but 10 times smaller than that of steel (E=2.1×106), so it often feels lack of rigidity and easy deformation in the product structure. the
Compensation method: It can be made into a thin shell structure, a sandwich structure, or it can be supplemented by high modulus fibers or ribs.
3. The long-term temperature resistance of FRP tiles is poor. Generally, FRP cannot be used at high temperatures for a long time. The strength of general-purpose polyester FRP drops significantly above 50°C, and it is usually only used below 100°C; general-purpose epoxy FRP is above 60°C. , the intensity decreased significantly.
Compensation method: choose high temperature resistant resin.