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Method for preparing silane/ molecular sieve/ graphene oxide anticorrosive film on surface of titanium alloy

A molecular sieve and titanium alloy technology, applied in anti-corrosion coatings, metal material coating processes, coatings, etc., can solve problems such as rare modification, and achieve the effects of enhanced corrosion resistance, excellent corrosion resistance, and high corrosion resistance.

Inactive Publication Date: 2020-05-15
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Research shows that the modification of graphene oxide on metal surface silane / molecular sieve composite film is relatively rare

Method used

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  • Method for preparing silane/ molecular sieve/ graphene oxide anticorrosive film on surface of titanium alloy
  • Method for preparing silane/ molecular sieve/ graphene oxide anticorrosive film on surface of titanium alloy
  • Method for preparing silane/ molecular sieve/ graphene oxide anticorrosive film on surface of titanium alloy

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Experimental program
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Embodiment 1

[0021] The method for preparing silane / molecular sieve / graphene oxide anticorrosion film on the surface of titanium alloy provided by this embodiment includes the following steps in order:

[0022] (1) Using the hydrothermal synthesis method, using tetrapropylammonium bromide as the template agent, under the conditions of high temperature and high pressure of 110°C and 0.5Mpa, the hydrothermal synthesis reaction was carried out in the reactor for 30h to obtain TS-1 molecular sieve, and then centrifuged Separation, washing, drying and grinding to obtain TS-1 molecular sieve powder;

[0023] (2) Mix vinyltriethoxysilane, ethanol and water at a volume ratio of 2:90:5 to prepare vinyltriethoxysilane hydrolyzate, then add TS-1 molecular sieve powder to prepare the concentration 25mg / mL silane / TS-1 molecular sieve suspension and continue to hydrolyze for 1.5h under magnetic stirring;

[0024] (3) Mix the graphene oxide dispersion, silane / TS-1 molecular sieve suspension, and dimethy...

Embodiment 2

[0028] The method for preparing silane / molecular sieve / graphene oxide anticorrosion film on the surface of titanium alloy provided by this embodiment includes the following steps in order:

[0029] (1) Using the hydrothermal synthesis method, tetrapropylammonium bromide was used as the template agent, and the hydrothermal synthesis reaction was carried out in the reactor under the conditions of high temperature and high pressure of 150°C and 1.0Mpa for 25h to obtain TS-1 molecular sieve, and then centrifuged Separation, washing, drying and grinding to obtain TS-1 molecular sieve powder;

[0030] (2) Mix vinyltriethoxysilane, ethanol and water at a volume ratio of 5:90:5 to prepare vinyltriethoxysilane hydrolyzate, then add TS-1 molecular sieve powder to prepare the concentration 30mg / mL silane / TS-1 molecular sieve suspension and continue to hydrolyze for 1.0h under magnetic stirring;

[0031] (3) Mix the graphene oxide dispersion, silane / TS-1 molecular sieve suspension, and d...

Embodiment 3

[0035] The method for preparing silane / molecular sieve / graphene oxide anticorrosion film on the surface of titanium alloy provided by this embodiment includes the following steps in order:

[0036](1) Using the hydrothermal synthesis method, using tetrapropylammonium bromide as the template agent, under the conditions of high temperature and high pressure of 200°C and 1.2Mpa, the hydrothermal synthesis reaction was carried out in the reactor for 20h to obtain TS-1 molecular sieve, and then centrifuged Separation, washing, drying and grinding to obtain TS-1 molecular sieve powder;

[0037] (2) Mix vinyltriethoxysilane, ethanol and water at a volume ratio of 7:90:5 to prepare vinyltriethoxysilane hydrolyzate, then add TS-1 molecular sieve powder to prepare the concentration 35mg / mL silane / TS-1 molecular sieve suspension and continue to hydrolyze for 0.5h under magnetic stirring;

[0038] (3) Mix the graphene oxide dispersion, silane / TS-1 molecular sieve suspension, and dimethyl...

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Abstract

The invention provides a method for preparing a silane / molecular sieve / graphene oxide anticorrosive film on surface of a titanium alloy. The method comprises the following steps of preparing TS-1 molecular sieve powder by using a hydrothermal synthesis method, and carrying out hot pressing on the surface of the titanium alloy by using vinyltriethoxysilane (YDH-151) as a coupling agent and adopting a molecular self-assembly method to synthesize the silane / molecular sieve / graphene oxide anticorrosive film. The anticorrosive film is modified by using graphene oxide in order to enhance the corrosion resistance of the molecular sieve film. The silane / molecular sieve / graphene oxide anticorrosive film prepared in the invention has excellent corrosion resistance, and the corrosion resistancerate reaches up to 99.8%.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and protection, in particular to a method for preparing a silane / molecular sieve / graphene oxide (GO) anticorrosion film on the surface of a titanium alloy. Background technique [0002] Most molecular sieve membranes have good corrosion resistance, and in the case of very harsh service environment (high concentration of Cl - , strong alkaline environment, etc.) can continue to work without being damaged, and the molecular sieve membrane as a corrosion-resistant coating also has the characteristics of green environmental protection, high temperature resistance, high mechanical strength, good high temperature stability and hydrothermal stability. much attention. It thus opens up a promising alternative to chromate conversion coatings, which are highly carcinogenic. Preparation of coating materials with active or functional properties on metal surfaces is a promising research topic in the f...

Claims

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Application Information

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IPC IPC(8): C23C26/00C09D5/08C09D7/61
CPCC09D5/08C23C26/00C09D7/61
Inventor 杜娟刘青茂魏子明李香云宋海鹏陈亚军王付胜宋肖肖
Owner CIVIL AVIATION UNIV OF CHINA