The process of the hand lay-up process is: firstly apply a release agent on the surface of the mold which has been cleaned or surface-treated, and after sufficient drying, a curing agent (initiator), an accelerator, a pigment paste and the like are added. Stir the gel coat or resin mixture evenly, apply it on the molding surface of the mold, and then lay a reinforcing material such as cut glass cloth (felt) on it, and pay attention to soaking the resin and removing air bubbles. The above layering operation is repeated until the design thickness is reached, and then the curing is released.
Other commonly used FRP forming methods include a pultrusion process, a winding process, and a press molding process:
Thermosetting molding is a method in which a certain amount of molding material is added to a preheated mold to form a plastic product by heat and pressure curing. The basic process is: putting a certain amount of the mold material which has been pretreated in a preheated mold, and applying a higher pressure to fill the mold cavity with the mold material. The molding material is gradually solidified under a certain pressure and temperature, and then the product is taken out from the mold, and then necessary auxiliary processing is performed to obtain the product.
The filament winding process is a method of controlling the tension and the predetermined line type, applying a special winding device to impregnate the continuous fiber or the cloth tape with the resin glue, and then continuously, uniformly and regularly winding on the core mold or the inner liner, and then It is cured in a certain temperature environment and becomes a composite material forming method for a certain shape product.
The pultrusion process is continuous drawing of the traction device, so that the reinforcing material such as the roving glass fiber roving and the felt material on the creel is impregnated by the glue liquid, passes through the heating mold with a fixed cross-sectional shape, and is solidified in the mold, and An automated production process that achieves continuous extrusion.
FRP is rough and can only be used for some products with relatively simple shape and low precision. However, because it is much better than traditional products in terms of performance, use and life properties, Yaya FRP uses the performance of its designers to create FRP. Play to a greater value!
