A. Selection of raw materials.
The raw materials used by the FRP grid are resin, FRP fiber wire, filling calcium powder is arranged in a ratio of 1:1:1. The high quality FRP grid is made of high quality resin: unsaturated o-benzene resin 196, colorless and transparent. Low viscosity, low heat release, low shrinkage, high speed curing, high compatibility, bright gloss. The production of FRP grid is smooth, good gloss, high strength and a certain toughness. If the use of inferior resin will be completely the opposite of inferior resin turbidity, high viscosity, high heat release, high shrinkage, curing is relatively slow, poor compatibility, the production of FRP grid porous, easy to fracture, poor strength toughness is not good.
In the FRP grid can enhance the toughness of the grid is FRP fiber wire. High quality FRP fiber wire such as no alkali type FRP fiber wire strength is higher than steel wire has a certain toughness, chemical stability, good weather resistance, almost no water absorption fire does not burn, his high strength can also be used as a tire cord.
The filling material of FRP grid is calcium powder or aluminum powder, the high quality filling powder is fine and white, with flame retardancy, and the complete fusion with resin, the production of the board is beautiful color, good transparency and toughness. On the contrary, inferior filler powder is rough and dim, not flame retardant, the production of the board without gloss, more brittle without toughness.
B. Comparison of finished products.
High quality FRP grating products have no obvious cracks in the appearance, less pores, bright color and pure, good transparency, with a certain toughness and strength, good surface finish, long service life; And the appearance of inferior FRP grating products has cracks, more pores, color is not pure gloss is not enough. Its service life is also shorter.
Although fiberglass steel plate can not completely replace the steel plate, but fully make up for the steel plate can not meet the conditions or fields. Fully reduce the load of the steel grid non-capacity burden, but also for people to provide another solution to the problem. Its appearance has become a powerful complement to the steel grid.
C. Practice is the sole criterion for testing truth time is the fairest judge.
FRP gratings in actual use will be exposed in the process of his real strength, high-quality glass fiber reinforced plastic grille using derivatives slightly dim a few years later, the whole board is in good condition, no obvious damage, poor quality of glass fiber reinforced plastic grille, yield to the test of practice, use a few years later can appear the obvious damage, such as corrosion fracture porosity board is not so smooth, Serious color degradation, overall aging, generally FRP steel grille is to use 20 years, but two years later, inferior FRP grille will appear the whole aging phenomenon, so it brings huge losses to customers.
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