FRP storage tanks for storing mixed media

Abstract

The invention discloses a glass steel storage tank for storing mixed media. The glass steel storage tank comprises a liner layer, a reinforcing layer and an outer protection layer. An interface layer and a swelling resistant layer are further sequentially arranged on the inner surface of the liner layer. The interface layer is made from epoxy resin curing liquid and reinforced fibers, and the epoxy resin curing liquid is formed by mixing epoxy resin, epoxy resin thinner and epoxy resin curing agents. The swelling resistant layer is made from phenolic mastic and reinforced fibers, and the phenolic mastic is formed by mixing phenolic resin, thinner and quartz powder. The reinforced fibers are alkali-free glass fiber woven roving with the density of 400 g / m <2>. The interface layer and the swelling resistant layer are arranged in the liner layer of the glass steel storage tank, so that the strong-acid mixed media with organic solvents are prevented from damaging the liner layer in a swelling mode, the liner layer can not fall down, can not leak, and is high in safety, the liner layer can not be affected by the content of the organic solvents and usage temperature, the application range of the liner layer is greatly widened, and the service life of the liner layer can be more than 10 years.

Description

technical field [0001] The invention relates to a glass fiber reinforced plastic storage tank, in particular to a glass fiber reinforced plastic storage tank used for storing mixed media. Background technique [0002] FRP storage tank is a kind of FRP products. It is mainly a new type of composite material made of glass fiber as a reinforcing agent and resin as a binder through a microcomputer-controlled machine winding. FRP storage tanks have the advantages of corrosion resistance, high strength, light weight, and long life. Therefore, they are gradually replacing carbon steel and stainless steel and are widely used in chemical, environmental protection, food, pharmaceutical and other fields. [0003] Traditional FRP storage tanks are usually composed of three parts: the inner lining layer, the reinforcement layer and the outer protective layer. The production method is controlled by a computer. The type and thickness of the reinforcement layer is wound, and finally the ou...

AI Technical Summary

Problems solved by technology

The disadvantages of this type of FRP storage tank are: (1) It is only suitable for situations where the content of organic solvents in the medium is low, and the operating temperature cannot exceed 40°C, so the scope of use is greatly limited

(2) It has a large corrosion margin, and its service life is usually only 1 to 2 years, which not only causes a lot of waste, but also pollutes the environment to a certain extent

The disadvantages of this type of FRP storage tank are: (1) The construction process of phenolic resin is poor, and it is difficult to control, especially in winter, it is difficult to achieve complete curing at room temperature, resulting in a long production cycle, which is not conducive to mass production

(2) Secondly, many small molecules will be produced during the curing of phenolic resin, resulting in many small pores on the product, which are prone to leakage and difficult to repair