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Preparation method of metal protective film with self-repairing function and super-amphiphobic function

A super-amphiphobic, protective film technology, used in anti-corrosion coatings, devices for coating liquid on surfaces, coatings, etc., can solve the problem of single function of the film layer, and achieve simple process, convenient operation, and excellent self-healing function. Effect

Active Publication Date: 2021-08-24
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these coatings have a single function and can only solve a certain aspect of the metal service process, but cannot comprehensively and fundamentally solve all the above-mentioned problems.

Method used

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  • Preparation method of metal protective film with self-repairing function and super-amphiphobic function
  • Preparation method of metal protective film with self-repairing function and super-amphiphobic function
  • Preparation method of metal protective film with self-repairing function and super-amphiphobic function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a protective film on the surface of AZ31 magnesium alloy with both self-repairing function and super-amphiphobic function, which specifically includes the following steps:

[0024] ① Dipping and pulling film formation: Use a dipping and pulling machine to perform dipping and pulling to form a film. Completely immerse the cleaned magnesium alloy workpiece in #1 immersion solution, pure water, #2 immersion solution, pure water, #3 immersion solution, and pure water at 60°C for 20 minutes each, and the pulling speed is 0.1mm / s respectively . The speed is pulled out.

[0025] The #1 immersion solution is uniformly mixed with aluminum phosphate solution and commercially available polytetrafluoroethylene emulsion in a volume ratio of 1:3; wherein the configuration process of aluminum phosphate solution is (same as other embodiments): Al(OH) 3 powder and a concentration of 60 wt% H 3 PO 4 Mix at a molar ratio of 3:1, mix at a molar ratio of 3:1, and ...

Embodiment 2、3 and 4

[0035] The preparation steps, performance and function test method of the protective film are the same as in Example 1, but the metal materials used as the protection object are different (see Table 1), the composition of the impregnation solution is different (see Table 1), and the preparation conditions are different (see Table 2) , performance and functional test results vary (see Table 3).

[0036]Table 1 metal material used in each embodiment and impregnating solution composition

[0037]

[0038] The film layer preparation conditions corresponding to each embodiment of table 2

[0039]

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Abstract

The invention provides a preparation method of a metal protective film with the self-repairing function and the super-amphiphobic function. The functional metal protective film provided by the invention is prepared by dip coating and curing treatment. The method is suitable for surface protection of metal materials of various shapes and sizes. The prepared metal protective film has the lasting self-repairing function and the super-amphiphobic function, not only can quickly repair various mechanical damages such as scratches and polishing scratches, but also can resist pollution and damage caused by various environmental media, and has great practical application value. The method has the characteristics of being simple in process, convenient to operate, friendly to the environment, easy for large-scale industrial treatment, and the like.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and in particular relates to a method for preparing a metal protective film with self-repairing function and super-amphiphobic function. Background technique [0002] Aluminum, magnesium, zinc, iron, titanium, nickel, copper and other metals and their alloys are widely used in various fields of the national economy. These metal materials are chemically active and prone to corrosion, and are also prone to mechanical damage such as scratches and abrasions during use, as well as pollution and damage from various environmental media, which seriously affect their service quality and life. [0003] In order to effectively inhibit the corrosion of metal materials, a variety of metal surface protection technologies have emerged. However, the existing metal protective films usually can only inhibit different types of corrosion, but are powerless against mechanical damage and pollution damage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14
CPCB05D7/14B05D7/24B05D7/582B05D5/00C09D127/18C09D7/61C09D133/02C09D179/02C09D5/08B05D2506/15B05D2502/00B05D2518/00B05D2601/20B05D2601/22B05D2202/25B05D2202/20B05D2202/30B05D2202/35B05D2202/45B05D2202/10C08K2003/327B05D2420/01B05D2420/02B05D2420/03C08K3/32C08K3/36
Inventor 李凌杰雷惊雷刘雷武佳乐唐春燕潘嘉燕
Owner CHONGQING UNIV
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