Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
Because zinc-rich paint contains zinc powder, the space frame fittings can protect the bottom of the stainless steel sheet muscle, so it is the preferred anti-rust finish. However, which epoxy zinc-rich paint or inorganic zinc-rich primer should be used?
The zinc-rich paint can only prevent rust when the coating is partially damaged. Therefore, although the inorganic zinc-rich primer is resistant to high temperature, washing, and the performance of chemical products and the level of static electricity induction have good performance, but in fact, if it is not used as a corrosion-resistant system software for a single coating of space frame accessories, it is just a combination of high-performance intermediate paint, and using epoxy zinc-rich paint and Inorganic zinc-rich primers are not very different in terms of corrosion resistance performance. The engineering construction of inorganic zinc-rich primer is relatively inconvenient. For the metal surface treatment of space frame accessories, engineering machinery and construction teams have very high regulations.
The inorganic zinc-rich primer must be dried before applying the intermediate paint coating. The drying and curing should be done with the help of higher air humidity. It is recommended to be about 60%. The surface layer of the inorganic zinc-rich primer has a porous structure. It is a sealing paint or mist spray technology. Inorganic zinc-rich primers have strict regulations on the thickness of the paint film. Too high dry film thickness will cause the paint film to crack. Generally, it is considered below 125μm.
In comparison, the engineering construction regulations for epoxy zinc-rich paint are much simpler. High-build modified epoxy coatings are key anti-rust finishes. They have anti-rust color pastes such as zinc acid or aluminum oxide powder. The paint film is firm and durable, and has strong adhesion to space frame accessories like vacuum hydrocarbon epoxy resin modified epoxy resin adhesive architectural coatings. There are different products such as general type, alumina powder type and glass flake mortar reinforced type. The single-pass spray paint can exceed (100～300) μm dry film thickness.
