The raw materials used are resin, glass fiber reinforced plastic filaments, and filler calcium powder in a ratio of 1:1:1. A good resin, unsaturated phthalic resin 196, is colorless and transparent. Low viscosity, low exotherm, low shrinkage, high-speed curing, high-speed compatibility, bright gloss. The produced FRP grating is flat and smooth, with good gloss, high strength and certain toughness. If you use inferior resin, it will be completely opposite. Inferior resin is turbid, high viscosity, high exotherm, high shrinkage, relatively slow curing, and poor compatibility. The fiberglass grille produced has many pores, is easy to break, and has poor strength. Toughness is not good.
In the glass fiber reinforced plastic grid, the toughness of the grid can be enhanced is the fiberglass fiber wire. Good glass fiber reinforced plastic fiber yarn, such as alkali-free glass fiber reinforced plastic fiber, has a certain toughness, chemical stability, good weather resistance, almost no water absorption and fire, and its high strength can also be used as tire cord.
The filler of the FRP grille is calcium powder or aluminum powder. The high-quality filler is fine and white in nature, has flame retardancy, and is completely integrated with the resin. The produced board is beautiful in color, good in transparency, and strong in toughness. On the contrary, inferior fillers are rough and dull, and are not flame-retardant. The produced boards have no gloss, and are relatively brittle and tough.
Good FRP grating products have no obvious cracks in appearance, fewer pores, bright and pure color, good transparency, a certain degree of toughness, high surface finish, and long service life; while inferior FRP grating products have cracks in appearance, There are more pores, and the color is not pure and the gloss is not enough. Its service life is also short.
Although FRP gratings cannot completely replace steel gratings, they completely make up for the conditions or areas that steel gratings cannot meet. It fully reduces the burden of the steel grating, and at the same time provides people with another solution to the problem. Its appearance has become a powerful supplement to steel grating.