How to discern the quality of FRP gratings?
A. Selection of raw materials. The raw materials used in the FRP grating are resin, FRP fiber filaments, and calcium powder, which are configured in a ratio of 1:1:1. The brand glass fiber reinforced plastic grille uses unsaturated phthalic resin 196? colorless and transparent. Low viscosity, low exotherm, low shrinkage, high-speed curing, high-speed compatibility, and bright gloss; glass fiber reinforced plastic fiber yarn is selected for alkali-free, high strength and toughness; heavy calcium powder is selected for 800 mesh or more.
B. Comparison of finished products. The appearance of high-quality FRP grating products has no obvious cracks? There are fewer pores? Bright and pure color? Good transparency? A certain degree of toughness and strength? Good surface finish? Long service life; while inferior FRP grating products have cracks in appearance? More pores? Impure color and insufficient gloss. Its service life is also short.
C. Practice is the only standard time for testing truth and the fairest judge. The real strength of the FRP grille will also be exposed in the actual use process? The color of the high-quality FRP grille is slightly dim after several years of use? The whole board is intact? There is no obvious damage? Inferior fiberglass grille will not withstand Live test? After a few years of use, there will be obvious damage such as corrosion, fracture, pores, etc.? The board is not so flat? The color degradation is serious? The overall aging? Generally, the FRP grille will be used for 20 years? But two years later, it is inferior. The glass fiber reinforced plastic grille will appear the phenomenon of overall aging? As a result, it will bring huge losses to customers.
