How to identify the quality of glass fiber reinforced plastic sign piles? Let me inform you that because glass fiber reinforced plastic sign piles are selling well, glass fiber reinforced plastic cooling tower manufacturers are also a mixed bag. Many companies use defective materials in order to save costs.
So how to discern the quality of FRP marker piles? To judge the quality of a product, you must first start with the raw materials it uses, and then judge the product. The last practice is to check the truth. The only standard moment is the fairest judgement. The defective glass fiber reinforced plastic sign pile products will not stand the moment of consideration. Barefoot.
A. Selection of raw materials:
The raw materials used for the glass fiber reinforced plastic sign pile are resin, glass fiber reinforced plastic fiber, and filler calcium powder equipped with a ratio of 1: 1. The high quality glass fiber reinforced plastic pile uses high-quality resin: unsaturated phthalic resin 196, colorless and transparent . Low viscosity, low exotherm, low shortening, high speed curing, high speed compatibility, bright gloss. The produced glass fiber reinforced plastic (FRP) marking piles are smooth and smooth, have good gloss, high strength and certain resistance. If the residual resin is used, it will be completely opposite. The residual resin is turbid, high viscosity, high exotherm, high shortening, relatively slow curing, and poor compatibility. The glass fiber reinforced plastic sign pile produced is porous and easy to crack. Poor strength and poor resistance.
In the FRP marker pile, it is the FRP fiber wire that can enhance the grille resistance. High-quality FRP fiber yarns such as alkali-free FRP fiber yarns have higher strength than steel wires. They have certain resistance, chemical stability, good weather resistance, hardly absorb water and fire, and they can be used as tire cord. Under normal circumstances, the fiberglass fiberglass is laid in 8-9 layers, so the product strength is guaranteed. While some manufacturers use FRP fiber yarns which are high-alkali yarns to act as alkali-free yarns. High-alkali yarns have lower strength and poor water and alkali resistance.
The filler of the glass fiber reinforced plastic sign pile is calcium powder or aluminum powder. The high-quality filler powder is fine and bright white, has flame retardancy, and is completely fused with the resin. The board produced is beautiful in color and good in resistance. On the contrary, the residual filling powder is rough and dark, and it is not flame retardant. The produced board has no gloss and is relatively brittle and impatience.
B. Comparison of products:
The appearance of high-quality glass fiber reinforced plastic sign piles has no obvious cracks, fewer pores, bright and pure colors, good transparency, a certain degree of resistance strength, good surface finish, and long service life. The appearance of defective glass fiber reinforced plastic piles has Cracks, more pores, impure colors and gloss. Its operating life is also short.
C. Practice is the sole standard moment of truth and the fairest judge:
FRP sign piles will also reveal his true strength in the practical application process. High-quality FRP sign piles are slightly dim after a few years of use. The whole board is intact and there is no significant damage. The defective FRP sign piles are Can not stand the practical inspection, after a few years of use, there will be significant damage such as corrosion cracks, pores, etc., the board is not so flat, the color degradation is serious, the entire aging, the general glass fiber reinforced plastic sign pile is used for 20 years, After all, the FRP sign piles will be aging, which will cause huge losses to customers.