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Production method and application range of FRP storage tank
2024.12.18
FRP storage tank production methods are basically divided into two categories, namely wet contact type and dry pressure molding. Such as according to the process characteristics, there are hand paste molding, lamination molding, RTM method, extrusion, die molding, winding molding and so on. Hand paste molding also includes hand paste method, bag press method, spray method, wet paste low pressure method and mold free hand paste method.
At present, the most used molding methods in the world are the following four.
① Hand paste method: The main countries are Norway, Japan, Britain, Denmark and so on.
② Injection method: The main countries are Sweden, the United States, Norway and so on.
③ Molding method: The main use of countries such as Germany.
④ FTM method: The main countries are Europe and the United States, Japan.
More than 90% of FRP products in China are produced by mechanical winding, and the others are molding, winding, laminating, etc. (see Chapter 11). The Japanese hand paste method still accounts for 50%. From the perspective of countries around the world, the hand paste method still accounts for a considerable proportion, indicating that it still has vitality. The hand paste method is characterized by wet resin molding, simple equipment, less cost, and can paste more than 10m of the overall product at a time. The disadvantages are low degree of mechanization, long production cycle and unstable quality. Since China has introduced extruding, spraying, winding process equipment from abroad, with the development of FRP industry, new process methods will continue to appear.
Glass fiber reinforced plastic storage tank can be widely used in petroleum, chemical industry, textile, printing and dyeing, electric power, transportation, petrochemical pharmaceutical, food brewing, artificial synthesis, water supply and drainage, seawater desalination, water irrigation and national defense engineering and other industries. Storage of various corrosive media can withstand a variety of acids, alkalis, salts and organic solvents, mainly used in petroleum, chemical, pharmaceutical, printing and dyeing, brewing, water supply and drainage, transportation and other industries, suitable for hydrochloric acid, sulfuric acid, nitric acid, formaldehyde, methanol, wine, hydrogen peroxide, sewage, hypochlorous acid