What are the raw materials of FRP septic tank?
May 16, 2023|
View:237Glass fiber reinforced plastic septic tank is mainly used in industrial production, construction wastewater purification and sewage treatment, replacing the original brick and reinforced concrete, compared with the old septic tank glass fiber reinforced plastic septic tank has higher social benefits, environmental benefits and economic benefits. Fiberglass reinforced plastic septic tank is a treatment equipment to remove floating organic matter in domestic sewage by using precipitation excreta and biological anaerobic fermentation technology. The shape of FRP septic tank is generally horizontal cylinder, and both ends of the head are generally designed with wheel shaped concave and convex surface with good mechanical properties. The interior of the FRP septic tank is provided with a partition, and the holes on the partition are dislocated up and down, which is not easy to form short flow, which greatly improves the reflection efficiency.
The main raw materials of FRP septic tank are organic resin, glass fiber and talc filling material. The tube structure of FRP products is divided into four layers: anti-corrosion layer, anti-seepage layer, strength layer and outer surface layer. Let's introduce the process flow of each layer below!
The matrix of the anticorrosive layer of glass fiber reinforced plastic septic tank is generally made of bisphenol A type unsaturated polyester resin, vinyl ester resin and other resins with excellent corrosion resistance. The reinforced material is glass fiber twistless coarse gauze.
The main effect of adding appropriate amount of filler in the middle of the resin manufacturing lining is to enhance the lining stability, because the addition of filler can reduce the water flow rate, thus reducing the permeability, but also reduce the coefficient of thermal expansion, so as to improve the lining thermal stability.
The strength layer of FRP septic tank is composed of two parts: plane thickness and reinforcement bar. Plane thickness is made of special resin as matrix, glass fiber untwisted coarse gauze as reinforcement material, and the resin content is 45%~ 50%. The thickness of this layer is determined by the diameter design and calculation of the product. From the perspective of beauty and strength, the reinforcement bar is set in the inside of the cylinder. The strengthening ring is made of FRIM and direct FRP. Both materials must be closely bonded with the cylinder and tank to achieve the best increase effect.
The external surface of glass fiber reinforced plastic septic tank is reinforced by special resin matrix with excellent weather resistance, glass fiber surface felt or glass fiber untwisted coarse gauze (thickness less than 0.16mm). The resin content is greater than 55%, and the thickness of the layer is 0.2 ~0.5mm
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