Rosin modified film-formative metal surface silanization protective treating agent and preparation method thereof

Abstract

The invention discloses a rosin modified film-formative metal surface silanization protective treating agent. In each 500 g of a mixed solution, the rosin modified film-formative metal surface silanization protective treating agent is composed of the following components: 1-2 g of sodium molybdate, 1-2 g of diethylamine, 5-8 g of hydroxyethyl cellulose, 10-15 g of rosin, 1-2 g of tris(2-hydroxyethyl) isocyanurate, 10-12 g of maleic anhydride, 4-6 g of diethylene glycol butyl ether, 5-8 g of propylene glycol, 2-3 g of succinic acid, 12-15 g of phenyltriethoxysilane and the balance of de-ionized water. As the rosin is adopted as a reaction raw material to polymerize with the raw materials such as the maleic anhydride and silicane, a relatively strong protective film can be formed on the metal surface; and corrosion resistance of a metal base body is enhanced.

Description

technical field [0001] The invention relates to a silanization treatment agent on the metal surface and a process for silanization treatment on the metal surface. Background technique [0002] Phosphating treatment has been widely used in metal coating pretreatment, lubrication, antirust and other industries. Especially in the coating pretreatment industry, phosphating treatment is one of the most commonly used pretreatment methods. Phosphating treatment is the process of forming a phosphate protective film on the surface of a metal after reacting in an acidic phosphate solution. Phosphate film also has good lubricity, insulation and corrosion resistance, so it is widely used in the manufacturing fields of automobiles, machinery manufacturing, aerospace and household appliances. The phosphating treatment process uses phosphoric acid, zinc, manganese, and nickel as the main raw materials, causing serious environmental pollution such as heavy metals, phosphorus, and nitrite,...

AI Technical Summary

Problems solved by technology

The phosphating treatment process uses phosphoric acid, zinc, manganese, and nickel as the main raw materials, causing serious environmental pollution such as heavy metals, phosphorus, and nitrite, and will more or less produce sediment and harmful gases during the treatment process, which affects production. If it is carried out normally, the discharged wastewater COD and heavy metals will endanger the environment if it is not treated in an environmentally friendly way; in addition, most of the phosphating treatment needs to be carried out under heating conditions, which consumes a lot of energy, the process is complicated, and the operation is inconvenient

Silane surface treatment technology has appeared, but the film formation of silane surface treatment agent on the metal surface is unstable, the anti-corrosion performance is unstable, and the effect is not good