n the metallurgical industry, due to the complex conditions of corrosive media in the production process, the objects of action include process pipelines, production equipment, as well as buildings and structures. The selection of materials for epoxy vinyl resin anti-corrosion applications must fully consider the objective requirements of the production process, such as the strength of the media , Concentration, temperature, working status are dynamic or static, indoor and outdoor, whether or not pressure and other factors and their changes. The first point is to grasp the environmental characteristics, and the second is to optimize the structural design. There are many types of non-metallic corrosion-resistant materials suitable for the environment of highly corrosive chemical media in the metallurgical industry. Epoxy vinyl resins are more successful and effective materials; epoxy vinyl resin materials are used for corrosion-resistant floors and can be cured at room temperature and can be constructed. With good adjustability, vinyl ester resin is used as a highly corrosion-resistant new material for demisters and electrolyzers. The main features are: room temperature curing, easy construction and operation, and good adjustability.
Vinyl ester resin is used as a highly corrosion-resistant new material for demisters and electrolyzers. The main varieties are: CH-2, CH-5, all with methacrylic epoxy structure; T-158, with methacrylic acid Phenolic epoxy structure. Among them: CH-2 resin has excellent comprehensive performance, high corrosion resistance, and alkali resistance is more prominent; CH-5 resin has good toughness, anti-leakage and sealing, and the use temperature can reach 100 ℃; T-158 resin has high resistance The temperature, wet state up to 120 ℃, dry state up to 150 ℃; T-158 resin has excellent corrosion resistance, resistance to some solvents and oxidizing media. It has the following characteristics: making corrosion-resistant integral resin floor, light, high-strength, seamless, low shrinkage; used for corrosion-resistant block floor, equipment lining masonry, hook (irrigation) joint mortar, cement paste Splices; acid, alkali, salt and some oxidizing media; high mechanical strength, can withstand greater impact; excellent impermeability, wear resistance, easy to clean, and decorative effects; compared with the block material, light weight , Can reduce the load of the structure, and the overall cost is low.
It has a prominent effect on the surface protection of buildings and structures, and has a strong pertinence to the ground corrosion problems encountered in the metallurgical industry and chemical industry. In the anti-corrosion structure design, epoxy vinyl resin should be based on the rationality and scientific design of the structure, which is the key to the durability of the protective structure. For example, the anti-corrosion structural layer design of the electrolytic cell, the corrosion-resistant FRP layer used has the characteristics of light weight, high strength, good insulation temperature resistance, good construction processability and designability. On the one hand, the glass fiber is bonded into a whole It plays the role of transmitting load, on the other hand, it gives FRP various excellent comprehensive properties including corrosion resistance. The combined use with the felt structure can further improve its corrosion resistance level, such as surface felt and chopped felt. 0.5～1.4k/m2, called resin-rich layer or main corrosion-resistant layer, so the corrosion resistance of FRP depends mainly on the variety of corrosion-resistant resin.
The overall resin mortar floor is a technology that has been vigorously developed and actively promoted in the past 20 years. The advent of low-shrinkage resins for CH vinyl ester floor has made the corrosion-resistant materials for floors in China a new technical level and a good structural layer. For: surface layer of cement, thickness about 1mm; resin mortar, thickness of 4-6mm; 2 cloth 3 glue FRP insulation layer; 2 layers of resin primer; leveling layer C20 fine stone concrete, thickness 30mm; cushion layer C15 concrete, thickness ≥ 120mm or base prefabricated reinforced concrete floor slab. Resin mortar masonry acid-resistant brick structure is mainly used in environments with certain impact resistance and compression requirements. Experts believe that the following structural layers can be used: surface layer acid-resistant brick, 30-65mm thick; resin mortar bonding layer, 4-6mm thick; 2 cloth 3 Adhesive FRP isolation layer; 2 resin primers; C20 fine stone concrete ≥40mm for cast-in-place leveling and slope layer; C15 concrete for precast reinforced concrete floor slab or cushion of base layer, thickness ≥120mm. Resin mortar masonry corrosion-resistant granite ground structure is mainly used in parts with high requirements for compression and impact resistance. The industry recommends the use of granite resin mortar for jointing, 50-50 mm thick; resin mortar masonry layer, 5-10 mm thick; 2 cloth 3 glue FRP isolation layer; 2 resin primers; leveling layer as structural layer.