In the category of composite anti-corrosion materials, glass fiber reinforced septic tanks hold a symbolic significance. These corrosion-resistant tanks are composed of high polymers through the bonding of epoxy resin sheets and organic fibers. In the composition process of glass fiber reinforced anti-corrosion rural septic tanks, organic fibers serve as a framework, while the epoxy resin provides the effects of isomers with unsaturated fatty acid groups and offers surface repair capabilities.

The corrosion of glass-fiber reinforced plastic septic tanks, when placed in corrosive environments, allows its corrosive substances to渗透 through the surface pores and exhaust ports of the anti-corrosive septic tank, seeping into the internal structure of the epoxy resin adhesive boards. This leads to the degradation of the anti-corrosive properties, followed by the gradual penetration of the corrosive substances into the interface between the boards and the organic fibers, causing delamination. This is the primary reason for corrosion. The corrosion process is essentially a cycle of penetration, erosion, and detachment of chemical substances. Therefore, it can be concluded that the corrosion resistance of glass-fiber reinforced plastic septic tanks is related to the permeability coefficient of the epoxy resin adhesive, the bonding effectiveness between the epoxy resin and the organic fibers, and the inherent corrosion resistance of the organic fibers themselves.

Glass-fiber Reinforced Plastic (GRP) septic tanks exhibit corrosion resistance due to the selection of resin-impregnated board materials. After curing, these materials still contain ester bonds, which, in terms of their function and quantity, determine the corrosion resistance of the epoxy resin-impregnated boards. If the total number of ester bonds is high, they are more prone to neutralization reactions in corrosive environments, leading to the destruction of the epoxy resin-impregnated boards, resulting in lower corrosion resistance. Conversely, a lower number of ester bonds indicates higher corrosion resistance. Therefore, the number of ester bonds and the ease of neutralization reactions are crucial factors in evaluating the corrosion resistance of GRP. The bonding effectiveness between the epoxy resin-impregnated boards and organic fibers within rural septic tanks also negatively impacts the tank's corrosion resistance. Better penetration corrosion resistance indicates a more stable bond between the epoxy resin-impregnated boards and organic fibers, making it less likely to detach during the penetration process. This, in turn, enhances the corrosion resistance of the new rural septic tank products.