What are the manufacturing processes of FRP tanks?
The lining has the skeleton and the airtight function, is a part of the finished product. When designing the lining, pay attention to the sufficient strength and rigidity. The thickness of the inner layer is more than 3mm (see Table 1), and the resin content is greater than 80%. The corrosion resistant surface felt, short cut felt and cloth handle paste can be used for making the inner layer. Its production process is roughly as follows: mold making, mold, tank head hand paste glass fiber products, after curing, stripping adhesive, bonding head, air nozzle test, grinding, repairing, too. For the qualified lining lining molding, using two type sealing and simplified one and head connecting two. Thus, it is easier to produce a qualified lining and increase productivity than a three end combination of a sealed tail, a simplified type and a head. The key to making the qualified lining is the connection between the head and the cylinder. The head and the cylinder should be made of socket joint, because the plug joint has the advantages of high strength of joint, good performance of internal pressure, uneasy leakage and convenient assembly. As long as the socket structure is reasonable, it will not leak after use. The bonding joint depends on the resin cement and the outer FRP reinforcement. Wherein, the daub is applied between the socket and the socket and plays the first line of defense. It is made up of resin and filler, and resin has the function of adhesion and seepage prevention. It requires good toughness and higher adhesion, so epoxy resin should be used as daub. After the first line of defense, the seepage prevention mainly depends on the FRP reinforced layer. The layer consists of fiberglass products and resins. Among them, glass fiber products such as blankets and cloth between the fiber gap, can not be impermeable, can only play a strengthening role.
The use of computer-controlled winding machines to complete this process will increase the SME investment in the project, thereby limiting the promotion of the project. Therefore, this paper designed and developed a mechanical fiber winding such products winding machine, winding machine successfully solves the problem of such products to ordinary fiber winding around the jar the root of the problem, to meet the users of the equipment of high quality and low price requirements. In tension, tension is applied and controlled to control the amount of glue contained, to arrange the yarn evenly and to exhaust the air in the yarn so as to reduce the void. After the end of the winding, the excess glue on the surface of the tank is scraped and solidified.
In order to increase the strength and stiffness of the tank and to improve the surface performance of the tank, the longitudinal lining must be wrapped around the qualified lining surface. The thickness of the wrapping layer is determined by the design of the internal pressure, determined by the diameter, the pressure and the safety factor.
