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What are the determining factors for the corrosion resistance of fiberglass septic tanks?
Release time:
2020/12/23
Fiberglass septic tanks are a representative type of composite anti-corrosion material made from a resin matrix and fiberglass. In the composition of fiberglass septic tanks, fiberglass serves as a supporting framework, while the resin undergoes curing under unsaturated conditions and provides outer layer protection. So how exactly do fiberglass septic tanks resist corrosion? When placed in a corrosive environment, corrosive media can penetrate through gaps and pores on the surface of the fiberglass septic tank, infiltrating the interior of the resin matrix, leading to the swelling of the fiberglass. Subsequently, the corrosive media gradually permeates the interface between the resin matrix and the fiberglass, causing the resin matrix to...
Fiberglass septic tanks are a representative type of composite anti-corrosion material made of resin matrix and fiberglass. In the composition of fiberglass septic tanks, fiberglass serves as a supporting framework, while the resin cures under unsaturated conditions and provides outer protection. So how exactly does the fiberglass septic tank resist corrosion?
After being placed in a corrosive environment, corrosive media can penetrate through the gaps and pores on the surface of the fiberglass septic tank, infiltrating the resin matrix and causing the fiberglass to swell. Subsequently, the corrosive media gradually permeates to the interface between the resin matrix and the fiberglass, leading to the separation between the resin matrix and the fiberglass. This is the process of corrosion of fiberglass.
The corrosion process of fiberglass septic tanks is essentially the process of media entering, eroding, and peeling away. Therefore, it is believed that the corrosion resistance of fiberglass septic tanks is related to three factors: the corrosion resistance and permeability of the resin, the bonding properties between the resin and fiberglass, and the inherent corrosion resistance of the fiberglass itself.
The resin matrix used in fiberglass septic tanks still contains ester bonds after curing. The function and quantity of these ester bonds determine the corrosion resistance of the resin matrix. If there are many ester bonds, it is prone to hydrolysis damage in corrosive environments, resulting in low corrosion resistance of the resin matrix; conversely, if there are fewer ester bonds, the corrosion resistance is higher. Therefore, the number of ester bonds in the resin matrix and the ease of hydrolysis are important factors determining the corrosion resistance of fiberglass.
The interfacial bonding properties between the resin matrix and fiberglass also affect the corrosion resistance of fiberglass septic tanks. The better the interfacial wettability of fiberglass, the more stable the bond between the resin matrix and fiberglass, making it less likely to separate during the corrosion process. Thus, the corrosion resistance of the fiberglass septic tank products will be higher.
The above content outlines the factors determining the corrosion resistance of fiberglass septic tanks, and I believe everyone has a certain understanding of it. I hope it is helpful to you. If you need to purchase fiberglass products, please recognize Guangxi Beihai Yueda Fiberglass Products Co., Ltd.
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