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Preparation method of hole sealing agent of aluminum alloy anode oxidation film

An anodic oxide film and sealing agent technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problem of being easily oxidized by high temperature, unable to reach the sealing depth, and the sealing penetration depth of inorganic machine sealing agents. Low problems, to avoid being oxidized, to improve the viscosity and dispersion effect, and to improve the penetration depth.

Pending Publication Date: 2019-11-15
刘军伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is aimed at the current organic resin sealing agent, due to its own surface tension and viscosity, in the sealing process, the effective sealing depth cannot be achieved, and it is easy to be oxidized by high temperature, while the inorganic machine sealing agent The sealing penetration depth is low, and it is easy to be worn and peeled off by external forces to expose the defects of the unsealed parts. A preparation method for aluminum alloy anodic oxidation film sealing agent is provided.

Method used

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  • Preparation method of hole sealing agent of aluminum alloy anode oxidation film

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of aluminum citrate xerogel:

[0033] In parts by weight, mix 40 parts of citric acid solution with a mass fraction of 20% and 5 parts of aluminum nitrate in a beaker, place the beaker in a water bath, heat up to 70°C, and stir for 40 minutes to obtain aluminum citrate Gel, put the aluminum citrate gel in an oven, heat up to 100°C, and dry for 6 hours to obtain the aluminum citrate xerogel, which is stored in a sealed bag.

[0034] Preparation of carbon-coated aluminum nanoparticles:

[0035] In parts by weight, take 20 parts of aluminum citrate xerogel, 30 parts of colloidal graphite, and 50 parts of cyclotrimethyltrinitramine and mix them into a high-pressure airtight container, and fill the high-pressure airtight container with a volume ratio of 3:1 Nitrogen and argon gas were ignited and detonated with a lead wire, and left to stand for 10 minutes to collect carbon-coated aluminum nanoparticles.

[0036] Preparation of active molybdenite powder:

[00...

Embodiment 2

[0045] Preparation of aluminum citrate xerogel:

[0046] In parts by weight, mix 45 parts of citric acid solution with a mass fraction of 20% and 6 parts of aluminum nitrate in a beaker, place the beaker in a water bath, heat up to 73°C, and stir for 45 minutes to obtain aluminum citrate Gel, put the aluminum citrate gel in an oven, heat up to 105°C, and dry for 6 hours to obtain the aluminum citrate xerogel, which is stored in a sealed bag.

[0047] Preparation of carbon-coated aluminum nanoparticles:

[0048] In parts by weight, take 23 parts of aluminum citrate dry gel, 35 parts of colloidal graphite, and 55 parts of cyclotrimethyltrinitramine and mix them into a high-pressure airtight container, and fill the high-pressure airtight container with a volume ratio of 3:1 Nitrogen and argon gas were ignited and detonated with a lead wire, and left to stand for 13 minutes to collect carbon-coated aluminum nanoparticles.

[0049] Preparation of active molybdenite powder:

[00...

Embodiment 3

[0058] Preparation of aluminum citrate xerogel:

[0059] In parts by weight, mix 50 parts of citric acid solution with a mass fraction of 20% and 8 parts of aluminum nitrate in a beaker, place the beaker in a water bath, heat up to 75°C, and stir for 50 minutes to obtain aluminum citrate Gel, put the aluminum citrate gel in an oven, heat up to 110°C, and dry for 7 hours to obtain the aluminum citrate xerogel, which is stored in a sealed bag.

[0060] Preparation of carbon-coated aluminum nanoparticles:

[0061] In parts by weight, take 25 parts of aluminum citrate dry gel, 40 parts of colloidal graphite, and 60 parts of cyclotrimethyltrinitramine and mix them into a high-pressure airtight container, and fill the high-pressure airtight container with a volume ratio of 3:1 Nitrogen and argon gas were ignited and detonated with a lead wire, and left to stand for 15 minutes to collect carbon-coated aluminum nanoparticles.

[0062] Preparation of active molybdenite powder:

[00...

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Abstract

The invention belongs to the technical field of material surface chemical treatment, and particularly relates to a preparation method of a hole sealing agent of an aluminum alloy anode oxidation film.The preparation method comprises the following steps of preparing dry gel, oleic acid, hexogen into explosive, carrying out detonation to obtain carbon-coated aluminum nano-particles, then mixing microbial oil, ethyl palmitate, amino lithium and the like to obtain lubricating dispersied oil, by using rapeseed oil acid, azelaic acid, and neopentyl glycol as a raw material to be subjected to esterification to obtain mixed ester, doping the carbon-coated aluminum nano-particles into the mixed ester, and preparing the hole sealing agent of the aluminum alloy anode oxidation film, aluminum plays arole in friction reduction and wear resistance when a microhole of the aluminum alloy anodized film is worn, part of the aluminum can still be oxidized to form aluminum oxide and fused with the anodic oxidation film to form homogeneous phase, so that the wear resistance and the anti-oxidation effect of the hole sealing agent are improved; the lubricating dispersed oil plays an excellent dispersing effect, so that the penetration depth of the hole sealing agent is improved; and the carbon-coated aluminum nano-particles have an anti-oxidation function, hardened organic components after hole sealing are prevented from being oxidized, and the preparation method has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of surface chemical treatment of materials, and in particular relates to a preparation method of a sealing agent for aluminum alloy anodic oxidation film. Background technique [0002] The application range of aluminum alloy products is very wide. The daily contact includes door and window profiles, curtain wall profiles, general profiles, industrial profiles, etc., but aluminum alloy products are easily corroded. In order to avoid corrosion of aluminum alloy products, aluminum alloy products are generally treated by anodic oxidation process. Anodizing technology is to form a dense oxide film on the surface of aluminum alloy to isolate the corrosive medium to protect the aluminum base and other surface decorations. The aluminum alloy after anodic oxidation treatment has the advantages of high hardness, insulation, heat insulation and corrosion resistance. [0003] Due to the high porosity and adsorption of...

Claims

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Application Information

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IPC IPC(8): C25D11/24
CPCC25D11/246
Inventor 刘军伟
Owner 刘军伟
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