Preparation method of magnesium alloy surface colorless transparent film

A magnesium alloy and transparent film technology, which is applied to the device for coating liquid on the surface, special surface, pretreatment surface, etc., can solve the problems of high cost and inability to obtain magnesium alloy, and achieve low cost, low resistance value, and durability good corrosion effect

Inactive Publication Date: 2012-09-05
MITAC PRECISION TECH(KUNSHAN) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The general chemical conversion film treatment process uses an acidic solution and the solution contains phosphorus or heavy metal elements. This process requires wastewater treatment equipment, which requires high costs. The obtained conversion film generally has a color, and the metallic color of the magnesium alloy matrix cannot be obtained. High-gloss metallic finish

Method used

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  • Preparation method of magnesium alloy surface colorless transparent film
  • Preparation method of magnesium alloy surface colorless transparent film

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preparation example Construction

[0022] The preparation method of the colorless transparent film on the surface of the magnesium alloy of the present invention is obtained by coating a layer of nano-coating on the surface of the magnesium alloy after surface pretreatment, degreasing and water washing, and then baking and curing the nano-coating on the surface of the magnesium alloy. Colorless transparent film. Wherein, the formula of this nano-coating mainly comprises by weight percentage:

[0023] Isobutanol 20-50%;

[0024] Ethylene glycol butyl ether 40-70%;

[0025] Nano sol gel 5-20%.

Embodiment 1

[0028] Step 101: Brushing the surface of the magnesium alloy workpiece to enhance the metal texture and brightness of the surface.

[0029] Step 102: degreasing the magnesium alloy workpiece after surface drawing to remove oil stains on its surface.

[0030] Step 103: Rinse the degreased magnesium alloy workpiece with clean water first, and then with deionized water to remove the residual agent on the surface.

[0031] Step 104: Spraying a layer of nano-coating on the surface of the washed magnesium alloy workpiece to prepare a colorless and transparent film, wherein the formula of the nano-coating mainly includes by weight percentage:

[0032] Isobutanol 50%;

[0033] Ethylene glycol butyl ether 40%;

[0034] Nano Sol Gel N7111 10%.

[0035] Step 105: Baking the magnesium alloy workpiece with the nano-coating film on the surface at 150 degrees Celsius for 30 minutes to dry and solidify the nano-coating film.

[0036] The surface of the product obtained by the above steps ...

Embodiment 2

[0038] Step 101: Vibrating and grinding the magnesium alloy workpiece to enhance the metal texture and brightness of its surface.

[0039] Step 102: degreasing the magnesium alloy workpiece after surface vibration grinding to remove oil stains on its surface.

[0040] Step 103: Rinse the degreased magnesium alloy workpiece with clean water first, and then with deionized water to remove the residual agent on the surface.

[0041] Step 104: Spraying a layer of nano-coating on the surface of the washed magnesium alloy workpiece to prepare a colorless and transparent film, wherein the formula of the nano-coating mainly includes by weight percentage:

[0042] Isobutanol 25%;

[0043] Ethylene glycol butyl ether 70%;

[0044] Nano Sol Gel N7111 5%.

[0045] Step 105: Baking the magnesium alloy workpiece with the nano-coating film on the surface at 150 degrees Celsius for 30 minutes to dry and solidify the nano-coating film.

[0046] The surface of the product obtained by the abo...

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Abstract

The invention provides a preparation method of a magnesium alloy surface colorless transparent film which is characterized by mainly comprising the following steps: (1) surface pretreatment; (2) degreasing; (3) water washing; (4) application of nano paint; and (5) baking. In the step (4), the nano paint mainly comprises the following components in percentage by weight: 20-50% of isobutanol, 40-70% of ethylene glycol monobutyl ether and 5-20% of nano sol-gel. Compared with the prior art, the preparation method provided by the invention has the advantages of simple technique, less required equipment and low cost; and the magnesium alloy surface colorless transparent film prepared by the method provided by the invention has the advantages of favorable corrosion resistance, high brightness and low ohmic value of the product surface, and can keep the metallic color and luster of the magnesium alloy.

Description

【Technical field】 [0001] The invention relates to a magnesium alloy surface treatment process, in particular to a preparation method for obtaining a high-gloss colorless transparent film by coating an organic nano-coating on the magnesium alloy surface. 【Background technique】 [0002] The specific gravity of magnesium is 1.7, which is 23% of iron, 25% of zinc, 20% of steel, and 66% of aluminum alloy; Strong, from production to disposal will not cause too much pollution to the ecology, in line with environmental protection requirements. [0003] Magnesium alloys are easily corroded in various corrosive media, and chemical conversion coating is usually used to improve their corrosion resistance. The general chemical conversion film treatment process uses an acidic solution and the solution contains phosphorus or heavy metal elements. This process requires wastewater treatment equipment, which requires high costs. The obtained conversion film generally has a color, and the met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/06B05D7/14B05D7/24B05D3/00B05D3/02B05D3/10
Inventor 杨升攀陈其亮
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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