A kind of hard aluminum alloy surface silanization protective treatment agent and preparation method thereof

A hard aluminum alloy, silanization technology, applied in the direction of metal material coating process, can solve the problems of harming the environment, high energy consumption, complex process, etc., and achieve the effect of low polarization current density and enhanced corrosion resistance.

Inactive Publication Date: 2016-03-23
重庆全景机械制造有限公司
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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 hard aluminum alloy surface silanization protection 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] Monoethanolamine Benzoate 2, Gur Gum 5, Rosin 3, Trihydroxyethyl Isocyanurate 5-6, Maleic Anhydride 10, Diethylene Glycol Butyl Ether 4, Propylene Glycol 8, Succinic Acid 3, Vinyltriethoxysilane 12, 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 vinyl triethoxysilane, 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 monoethanolamine benzoate and gull gum, and stir for 40-50 minutes;

[0024] (4) Cool down to 80-90°C...

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Abstract

The invention discloses a surface silanization protection treatment agent for hard aluminum alloy. The surface silanization protection treatment agent is prepared from the following ingredients in weight (gram) in every 500g of mixture liquid: 1-2g of monoethanolamine benzoate, 3-5g of guar gum, 3-5g of rosin, 1-2g of trihydroxyethyl isocyanurate, 10-12g of maleic anhydride, 4-6g of diethylene glycol butyl ether, 5-8g of propylene glycol, 3-5g of butane diacid, 8-12g of vinyl triethoxysilane and the balance of deionized water. According to the surface silanization protection treatment agent, rosin serving as a reaction raw material is polymerized with raw materials, such as maleic anhydride and silane, and then, a strong protecting film can be formed on the surface of metal; and the corrosion resistance of metallic matrixes 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 Patents(China)
IPC IPC(8): C23C22/00
Inventor 夏坤财
Owner 重庆全景机械制造有限公司
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