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

A metal surface, rosin modification technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of harming the environment, complex process, unstable anti-corrosion performance, etc., to achieve the effect of enhanced corrosion resistance and low polarization current density

Inactive Publication Date: 2013-04-24
WUHU HENGKUN AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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Embodiment Construction

[0018] A rosin modified film-forming metal surface silanization protective treatment agent is made of the following components, and the weight (grams) of each raw material component in every 500 grams of mixed solution is:

[0019] Sodium molybdate 1, diethylamine 2, hydroxyethyl cellulose 8, rosin 15, trihydroxyethyl isocyanurate 2, maleic anhydride 10, diethylene glycol butyl ether 6, propylene glycol 8, butyl Diacid 3, phenyltriethoxysilane 15, and the balance is deionized water.

[0020] The preparation method of described metal surface silanization protective treatment agent comprises the following steps:

[0021] (1) Heat and melt the rosin to 110-115°C, add diethylene glycol butyl ether and phenyltriethoxysilane, and stir for 35-50 minutes;

[0022] (2) Heat up to 145-160°C, add trihydroxyethylisocyanurate and maleic anhydride, and stir for 40-50 minutes;

[0023] (3) Continue to heat up to 190-205°C, add diethylamine and succinic acid, and stir for 40-50 minutes;

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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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D7/12C09D5/08
Inventor 夏坤财
Owner WUHU HENGKUN AUTO PARTS
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