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High-antiseptic aluminum alloy anode oxide film non-nickel sealant and preparation method thereof

An anodized film, aluminum alloy technology, applied in the direction of electrolytic coating, surface reaction electrolytic coating, coating, etc., can solve antibacterial, corrosion resistance, heat resistance, salt spray resistance, wear resistance, oxidation resistance Poor toughness, hardness, shrinkage affect sealing performance, poor sealing performance of oxide film gaps, etc., to achieve the effect of improving oxidation resistance, improving SO42- interference, and improving sealing efficiency

Inactive Publication Date: 2016-01-13
MAANSHAN JIECHUANG PLASTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this process still has shortcomings, anti-SO 4 2- The interference is poor, and the permeability is not good, the gap sealing performance of the bottom layer of the oxide film is not good, and there are also poor performances such as antibacterial, corrosion resistance, heat resistance, salt spray resistance, wear resistance, and oxidation resistance. In addition, the toughness, hardness, and shrinkage of the sealant will also affect the sealability, which needs to be improved

Method used

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Embodiment Construction

[0011] A high-corrosion aluminum alloy anodized film nickel-free sealing agent, made of the following raw materials in parts by weight (kg): magnesium acetate 8, triethanolamine 19, ammonium acetate 3, deionized water amount, sodium molybdate 1.3, benzene Pimidazole 0.7, glucose 0.4, lithium silicate 0.4, dodecafluoroheptylpropyltrimethoxysilane 2.6, tetrabutyl titanate 1, ethanol 45, ammonia water 8.6, fluorine-containing surfactant 0.3.

[0012] The preparation method of the nickel-free sealing agent for the anodic oxidation film of aluminum alloy treated at medium temperature comprises the following steps:

[0013] (1) Mix tetrabutyl titanate and ethanol, stir to obtain tetrabutyl titanate ethanol solution, mix lithium silicate, dodecafluoroheptylpropyltrimethoxysilane, and fluorine-containing surfactant, add 5 wt. A portion of water was stirred evenly to obtain a solution, and the solution was dripped into the tetrabutyl titanate ethanol solution under stirring, and stirre...

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Abstract

The invention discloses a high-antiseptic aluminum alloy anode oxide film non-nickel sealant. The sealant is prepared from, by weight, 8-8.5 parts of magnesium acetate, 19-20 parts of triethanolamine, 3-3.2 parts of ammonium acetate, an appropriate amount of deionized water, 1.3-1.5 parts of sodium molybdate, 0.7-0.8 part of benzimidazole, 0.4-0.5 part of glucose, 0.4-0.5 part of lithium silicate, 2.6-2.8 parts of Dodecafluoroheptyl-propyl-trimethoxysilane, 1-1.2 parts of tetrabutyl titanate, 45-48 parts of ethyl alcohol, 8.6-9 parts of ammonium hydroxide and 0.3-0.4 part of fluorine-containing surfactants. The sealant is good in permeability, cohesiveness and hydrophobicity; the sealing efficiency is improved through the sodium molybdate, the benzimidazole and the glucose; a chemical oxide film is formed on the surface of a hole in a combining mode after the hole is sealed through the sealant, the oxide film is high in antiseptic capacity, and the sealant is environmentally friendly and free of pollution.

Description

technical field [0001] The invention relates to the technical field of nickel-free sealing agent for aluminum alloy anodic oxidation film, in particular to a nickel-free sealing agent for high anti-corrosion aluminum alloy anodic oxidation film and a preparation method thereof. Background technique [0002] At present, aluminum and its alloys generally use anodic oxidation surface protection technology to form a certain thickness of oxide film on the surface of aluminum and its alloys. Since there are a large number of micropores on the surface of the oxide film, appropriate sealing treatment must be carried out. The common sealing methods are mainly Boiling water (or steam) sealing, nickel salt sealing, polymer resin sealing. The boiling water (or steam) sealing method has high energy consumption and cannot meet the requirements for higher corrosion resistance; the commonly used nickel salt sealing agent contains Ni 2+ , F － It is toxic to the human body and the environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/18
Inventor 吴传兴
Owner MAANSHAN JIECHUANG PLASTIC TECH CO LTD