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Corrision-resistant zinc-base aliuminium-magnesium rare-earth alloy coating, and its preparing method

An aluminum-magnesium rare-earth and alloy technology is applied in the field of sacrificial anode type corrosion-resistant zinc-based aluminum-magnesium rare earth alloy coatings and their preparation fields, which can solve problems such as complicated construction operations, and achieve a wide application range, long protection time and simple operation. Effect

Inactive Publication Date: 2006-10-25
WUHAN UNIV OF SCI & TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

(CN1186463A) is used for metal surface protection coating, is the multi-layer or double-layer polymer coating film, and construction operation is complicated

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A method for preparing a corrosion-resistant zinc-based aluminum-magnesium rare earth alloy coating. The preparation steps and application effect are as follows:

[0014] 1. Preparation of coating component A

[0015] 20-30% solid content is 50% E-20 epoxy resin liquid, 2.0-5.5% diluent, 1.8-2.0% organic modified bentonite, 1.5-3.0% talcum powder according to weight percentage , 60-70% of Zn-15Al-5Mg-RE alloy micropowders are added into the container one by one, and each time an ingredient or raw material is added, it is stirred at 700-800 rpm for 15-20 minutes. in:

[0016] Preparation of E-20 epoxy resin solution with 50% solid content in component A

[0017] The weight ratio of diluent to E-20 epoxy resin is 1:1, heat the diluent to 75-85°C, slowly add E-20 epoxy resin while stirring the diluent, keep it warm for 2.5-3.5 hours, and make E- 20 The epoxy resin is completely dissolved.

[0018] Preparation of Diluent in Part A

[0019] Add 68-74% of xylene, 17-23%...

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Abstract

The invention relates to a anode sacrificed type corrosion resistant zinc radical aluminum magnesium rare earth alloy coating material and the manufacture method. It mixes two constituents according to 9:1 and dilutes to 5S-20S viscosity, aging for 15-20 minutes. The first constituents include 50% E-20 epoxy resin liquid, 2.0-6.0% diluting agent, 1.0-3.0% organic modified pig bentonite, 1.5-3.0% french chalk, 60-70% Zn-15Al-5Mg-RE alloy powder. And the second constituents include 20-30% T-31 epoxy resin curing agent, 20-35% butyl alcohol, and 35-50% xylene. The invention is easy to operate, and has wide application.

Description

1. Technical field [0001] The invention belongs to the technical field of anti-corrosion coatings for steel structure surfaces. In particular, it relates to a sacrificial anode type corrosion-resistant zinc-based aluminum-magnesium rare earth alloy coating and a preparation method thereof. 2. Background technology [0002] Inorganic coating (CN1210874A) adopts aluminum powder+zinc powder or aluminum-zinc alloy powder coating as the corrosion resistance of the sacrificial anode coating of steel is not long enough; Arc spraying Ac aluminum alloy or aluminum zinc magnesium alloy coating or coating zinc or aluminum or magnesium and then coating Ac aluminum alloy or aluminum-zinc-magnesium alloy to protect the outer surface of steel storage tank bottom plate, the construction operation is difficult, there are many hardwares, and the scope of application Narrow; a water-based epoxy resin coating and its preparation method (CN1415680), which only achieves water resistance at 25 ° ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
Inventor 从善海邱从明吴润张恒黄涛何新华邱玲慧
Owner WUHAN UNIV OF SCI & TECH
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