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FRP(Fiber Reinforced Plastics)

Oct 11, 2018

The main components and production process of FRP molded resin: FRP alias glass fiber reinforced plastic, commonly known as FRP (Fiber Reinforced Plastics), that is, fiber reinforced composite plastic. According to the different fibers used, it is divided into glass fiber reinforced composite plastic (GFRP), carbon fiber reinforced composite plastic (CFRP), boron fiber reinforced composite plastic and so on. It is a composite material of glass fiber and its products (glass cloth, belt, felt, yarn, etc.) as a reinforcing material and synthetic resin as a base material. The fiber reinforced composite material is composed of reinforcing fibers and a matrix. The diameter of the fiber (or whisker) is very small, generally below 10 μm, the defect is small and small, and the strain at break is about 30 parts per thousand. It is a brittle material, which is easily damaged, broken and corroded. The matrix has much lower strength and modulus than the fiber, but it can withstand large strains, often has viscoelasticity and elastoplasticity, and is a ductile material.

The meaning of FRP refers to the reinforced plastics made of glass fiber as reinforcing material and synthetic resin as binder. It is called glass fiber reinforced plastic in foreign countries. With the development of China's FRP industry, as a plastic-based reinforcement material, it has been expanded from glass fiber to carbon fiber, boron fiber, aramid fiber, alumina fiber and silicon carbide fiber. Undoubtedly, these new fiber made of reinforced plastic , is a high-performance fiber reinforced composite material, and the common name of glass fiber reinforced plastic can not be summarized. Considering the origin and development of history, FRP composites are usually used, so the name is more comprehensive.

The manufacturing process of FRP can be roughly divided into two types, namely wet contact type and dry press forming. According to the characteristics of the process, there are hand lay-up, lamination, RTM, pultrusion, compression molding, and winding molding. Hand lay-up includes hand lay-up, bag press, spray, wet paste low pressure and moldless paste.

Process for making FRP: FRP acid mist purification tower process.

Process flow:

First, the FRP acid mist neutralization tower needs a design of a packing layer having a suitable height, a plastic ring of φ50 mm or a hollow sphere with many faces. The effect of this is on the lye energy in the tower. Increasing the contact area with the acid mist, and long-term contact, naturally increases the efficiency of absorption, and the exhaust gas generated after the chemical reaction is released from the top of the purification tower.

Secondly, the lye pump is equipped with a fluoroplastic or plastic flavor centrifugal pump. The design of this kind is designed to be corrosion-resistant and has a good running effect. The equipment is also convenient when it is regularly inspected or repaired;