CN105200493A - Nickel-free hole sealing agent for bright and smooth aluminum alloy anode oxide film and preparation method of nickel-free hole sealing agent - Google Patents

Nickel-free hole sealing agent for bright and smooth aluminum alloy anode oxide film and preparation method of nickel-free hole sealing agent Download PDF

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Publication number
CN105200493A
CN105200493A CN201510614452.3A CN201510614452A CN105200493A CN 105200493 A CN105200493 A CN 105200493A CN 201510614452 A CN201510614452 A CN 201510614452A CN 105200493 A CN105200493 A CN 105200493A
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China
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hole sealing
sealing agent
nickel
parts
oxide film
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CN201510614452.3A
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Chinese (zh)
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吴传兴
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Maanshan Jiechuang Plastic Science & Technology Co Ltd
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Maanshan Jiechuang Plastic Science & Technology Co Ltd
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Abstract

The invention discloses a nickel-free hole sealing agent for a bright and smooth aluminum alloy anode oxide film. The nickel-free hole sealing agent is prepared from, by weight, 8-8.5 parts of magnesium acetate, 19-20 parts of triethanolamine, 3-3.2 parts of ammonium acetate, a proper amount of deionized water, 1.1-1.2 parts of LiF, 0.4-0.5 part of sulfosalicylic acid, 0.4-0.5 part of zinc polysilicate, 0.4-0.5 part of 2-mercapto benzimidazole rare earth complex, 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 surfactant. According to the hole sealing agent, LiF, sulfosalicylic acid, zinc polysilicate and 2-mercapto benzimidazole rare earth complex are used, the affinity to aluminum alloy is high, the hole sealing agent can permeate into holes, the sealing performance is good, the surface of the oxide film obtained after hole sealing can be bright and good in smoothness, and corrosion resistance and anti-fouling performance are greatly improved.

Description

A kind of bright smooth aluminium alloy anode oxide film is without nickel hole sealing agent and preparation method thereof
Technical field
The present invention relates to aluminium alloy anode oxide film without nickel hole sealing agent technical field, particularly relate to a kind of bright smooth aluminium alloy anode oxide film without nickel hole sealing agent and preparation method thereof.
Background technology
At present, Aluminum-aluminum alloy generally adopts anodized surface guard technology, certain thickness oxide film is formed on Aluminum-aluminum alloy surface, there is a large amount of micropore in the surface due to oxide film, must suitable sealing treatment be carried out, common enclosure method mainly contain boiling water (or steam) close, nickel salt close, macromolecule resin close.Boiling water (or steam) enclosure method energy consumption is high and cannot meet the requirement compared with high anti-corrosion; Conventional nickel salt encapsulant is containing Ni 2+, F -to human body and the effect of environmental toxic evil, its stripping quantity is subject to the strict restriction of the regulations such as European Union 94/27/EEC nickel instruction; The molecular volume of macromolecule resin is too large, cannot diffuse into pore interior and realize good closed performance.Therefore, the demand energy-efficient, the green aluminum anodized film sealing technique of asepsis environment-protecting is developed is urgent, wherein, the hole sealing agent being main component with an alkali metal salt or alkaline earth salt has the characteristics such as resource is wide, with low cost, environmental friendliness, is a kind of novel green anode oxide film hole sealing agent.The U.S., Wuhan Inst. of Material Protection of China have successively carried out the technical study of alkaline earth salt sealing of hole." 6063 aluminium alloy anode oxide films are without the optimization of nickel hole-sealing technology " literary composition take magnesium acetate as hole sealing agent main component, orthogonal experiment is adopted to have studied the impact of hole-sealing technology parameter on sealing quality, obtain the Optimization Technology without nickel hole sealing technology, and the technique applied research of anti-ion interference has been carried out to this technique.Result shows, can the realizing in 80 DEG C antianode oxide film under temperature without nickel hole-sealing technology and carry out sealing pores of optimization, and sealing quality is good, anti-Na +interference performance is given prominence to, and achieves sealing of hole process without Ni 2+deng environomental pollution source, environmental protection, and the reduction of sealing of hole temperature is conducive to reducing energy consumption, and energy-saving benefit is remarkable.But this technique still has weak point, anti-SO 4 2-disturb poor, and perviousness is bad, the space closure of the oxide film bottom of bottom is bad, also there is the problem that the performances such as germ resistance, solidity to corrosion, thermotolerance, salt fog resistance, wear resistance, oxidation-resistance are not good, and the toughness of encapsulant, hardness, shrinking percentage etc. also can affect closure, need to improve.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of bright smooth aluminium alloy anode oxide film without nickel hole sealing agent and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of bright smooth aluminium alloy anode oxide film, without nickel hole sealing agent, is made up of the raw material of following weight part: magnesium acetate 8-8.5, trolamine 19-20, ammonium acetate 3-3.2, deionized water are appropriate, LiF1.1-1.2, sulphosalicylic acid 0.4-0.5, zinc polysilicate 0.4-0.5,2-mercaptobenzimidazole rare earth compounding 0.4-0.5, lithium silicate 0.4-0.5, ten difluoro heptyl propyl trimethoxy silicane 2.6-2.8, tetrabutyl titanate 1-1.2, ethanol 45-48, ammoniacal liquor 8.6-9, fluorochemical surfactant 0.3-0.4.
The smooth aluminium alloy anode oxide film of described light, without the preparation method of nickel hole sealing agent, comprises the following steps:
(1) by tetrabutyl titanate, ethanol mixing, stirring obtains tetrabutyl titanate ethanolic soln, by lithium silicate, ten difluoro heptyl propyl trimethoxy silicanes, fluorochemical surfactant, the mixing of 2-mercaptobenzimidazole rare earth compounding, the water adding 5-6 weight part stirs, obtain solution, to instill in tetrabutyl titanate ethanolic soln under described solution stirring, 1.5-1.8h is stirred under 250-300r/min condition, obtain mixture, then ammoniacal liquor is slowly dripped in people's said mixture, at 30-35 DEG C, obtain emulsion after stirring reaction 3-3.5h;
(2) mixing solutions is prepared, magnesium acetate 8g/L, trolamine 19g/L, ammonium acetate 3g/L;
(3) emulsion (1) step obtained adds in the solution that (2) step obtains by 1.6-1.8g/L, then adds other remaining component, mixes, and regulates pH=5, is heated to 80-82 DEG C, aluminium section bar is flooded 20-30min, to obtain final product.
Advantage of the present invention is: the present invention uses tetrabutyl titanate to form nano titanium oxide, employ lithium silicate, ten difluoro heptyl propyl trimethoxy silicanes, fluorochemical surfactant simultaneously, through reaction, the perviousness of hole sealing agent, cohesiveness, hydrophobicity can be improved, improve sealing of hole effect, improve the oxidation-resistance of oxide film and anti-SO simultaneously 4 2-interference; By using LiF, sulphosalicylic acid, zinc polysilicate, 2-mercaptobenzimidazole rare earth compounding, strong to the avidity of aluminium alloy, can pore interior be infiltrated into, closure is good, and the oxide film surface-brightening after sealing of hole can be made, planeness is good, and corrosion-resistant, didirtresistance improves greatly.
Embodiment
A kind of bright smooth aluminium alloy anode oxide film, without nickel hole sealing agent, is made up of the raw material of following weight part (kilogram): magnesium acetate 8, trolamine 19, ammonium acetate 3, deionized water are appropriate, LiF1.1, sulphosalicylic acid 0.4, zinc polysilicate 0.4,2 mercaptobenzimidazole rare earth compounding 0.4, lithium silicate 0.4, ten difluoro heptyl propyl trimethoxy silicane 2.6, tetrabutyl titanate 1, ethanol 45, ammoniacal liquor 8.6, fluorochemical surfactant 0.3.
The smooth aluminium alloy anode oxide film of described light, without the preparation method of nickel hole sealing agent, comprises the following steps:
(1) by tetrabutyl titanate, ethanol mixing, stirring obtains tetrabutyl titanate ethanolic soln, by lithium silicate, ten difluoro heptyl propyl trimethoxy silicanes, fluorochemical surfactant, 2 mercaptobenzimidazole rare earth compounding mixing, the water adding 5 weight parts stirs, obtain solution, to instill in tetrabutyl titanate ethanolic soln under described solution stirring, 1.5h is stirred under 250r/min condition, obtain mixture, then ammoniacal liquor is slowly dripped in people's said mixture, at 30 DEG C, obtain emulsion after stirring reaction 3h;
(2) mixing solutions is prepared, magnesium acetate 8g/L, trolamine 19g/L, ammonium acetate 3g/L;
(3) emulsion (1) step obtained adds in the solution that (2) step obtains by 1.6g/L, then adds other remaining component, mixes, and regulates pH=5, is heated to 80 DEG C, aluminium section bar is flooded 20min, to obtain final product.
Experimental data:
Detect according to GB/T8753.2-2005, sealing of hole weightlessness is 10.5mg/dm 2; According to GB/T8753.4-2005, dyeing grade is 0, and anti-dye high adsorption capacity, illustrates that seal quality is qualified.
Studied by anti-ion interference, even if when result display Na+ content increases to 400mg/L, sealing of hole weightlessness is also only 11.8mg/dm 2, be less than 30mg/dm 2, sealing quality is good, anti-Na +interference performance is given prominence to; Work as SO 4 2-content when being 500mg/L, sealing of hole weightlessness is 13.2mg/dm 2, be less than 30mg/dm 2, sealing of hole effect is better, anti-SO 4 2-disturb.
By carrying out electron-microscope scanning to oxide film surface, see that a large amount of micropores on the surface of oxide film are nearly all closed, pore space structure is few, and sealing of hole is comparatively even.

Claims (2)

1. the smooth aluminium alloy anode oxide film of light is without a nickel hole sealing agent, it is characterized in that being made up of the raw material of following weight part: magnesium acetate 8-8.5, trolamine 19-20, ammonium acetate 3-3.2, deionized water are appropriate, LiF1.1-1.2, sulphosalicylic acid 0.4-0.5, zinc polysilicate 0.4-0.5,2-mercaptobenzimidazole rare earth compounding 0.4-0.5, lithium silicate 0.4-0.5, ten difluoro heptyl propyl trimethoxy silicane 2.6-2.8, tetrabutyl titanate 1-1.2, ethanol 45-48, ammoniacal liquor 8.6-9, fluorochemical surfactant 0.3-0.4.
2. the smooth aluminium alloy anode oxide film of light according to claim 1 is without the preparation method of nickel hole sealing agent, it is characterized in that comprising the following steps:
(1) by tetrabutyl titanate, ethanol mixing, stirring obtains tetrabutyl titanate ethanolic soln, by lithium silicate, ten difluoro heptyl propyl trimethoxy silicanes, fluorochemical surfactant, the mixing of 2-mercaptobenzimidazole rare earth compounding, the water adding 5-6 weight part stirs, obtain solution, to instill in tetrabutyl titanate ethanolic soln under described solution stirring, 1.5-1.8h is stirred under 250-300r/min condition, obtain mixture, then ammoniacal liquor is slowly dripped in people's said mixture, at 30-35 DEG C, obtain emulsion after stirring reaction 3-3.5h;
(2) mixing solutions is prepared, magnesium acetate 8g/L, trolamine 19g/L, ammonium acetate 3g/L;
(3) emulsion (1) step obtained adds in the solution that (2) step obtains by 1.6-1.8g/L, then adds other remaining component, mixes, and regulates pH=5, is heated to 80-82 DEG C, aluminium section bar is flooded 20-30min, to obtain final product.
CN201510614452.3A 2015-09-24 2015-09-24 Nickel-free hole sealing agent for bright and smooth aluminum alloy anode oxide film and preparation method of nickel-free hole sealing agent Pending CN105200493A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107805837A (en) * 2017-09-05 2018-03-16 江苏飞拓界面工程科技有限公司 A kind of aluminium and aluminium alloy environmental protection normal-temperature hole sealing agent and its hole-sealing technology
CN108441923A (en) * 2018-03-23 2018-08-24 长沙小新新能源科技有限公司 A kind of hole-sealing technology of magnesium alloy
JP2020503460A (en) * 2017-01-13 2020-01-30 マクダーミッド アキューメン インコーポレーテッド Sealing anodized aluminum using a low temperature nickel-free process
CN115537891A (en) * 2022-10-09 2022-12-30 广东华昌集团有限公司 Medium-temperature nickel-free sealing agent for aluminum and aluminum alloy anodic oxide film and sealing process

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101323965A (en) * 2008-07-24 2008-12-17 武汉材料保护研究所 Medium-temperature sealing agent and sealing process for aluminum anodic oxidation film
CN101812713A (en) * 2010-05-07 2010-08-25 李继光 Method for preparing aluminum alloy anodic oxide film sealant
CN103215630A (en) * 2013-04-23 2013-07-24 沈阳理工大学 Method for sealing aluminum alloy anode oxide film pore by adopting organic-inorganic composite silica sol
CN103938250A (en) * 2013-01-18 2014-07-23 铃木株式会社 Anodic oxide film and methods for manufacturing same
CN104233428A (en) * 2014-09-26 2014-12-24 湖南大学 Method for improving alkaline resistance of anode oxide film on surface of aluminum or aluminum alloy material
JP2015004084A (en) * 2013-06-19 2015-01-08 奥野製薬工業株式会社 Sealing liquid for anodic oxidation film of aluminum alloy
CN104451821A (en) * 2014-11-15 2015-03-25 北京化工大学 Method for carrying out hole sealing treatment on anodic alumina, component of overhead contact system of electric railway, by using silane coupling agent
CN104911669A (en) * 2015-06-30 2015-09-16 马鞍山市华冶铝业有限责任公司 Aluminum profile sealing agent, preparation method, application and application method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101323965A (en) * 2008-07-24 2008-12-17 武汉材料保护研究所 Medium-temperature sealing agent and sealing process for aluminum anodic oxidation film
CN101812713A (en) * 2010-05-07 2010-08-25 李继光 Method for preparing aluminum alloy anodic oxide film sealant
CN103938250A (en) * 2013-01-18 2014-07-23 铃木株式会社 Anodic oxide film and methods for manufacturing same
CN103215630A (en) * 2013-04-23 2013-07-24 沈阳理工大学 Method for sealing aluminum alloy anode oxide film pore by adopting organic-inorganic composite silica sol
JP2015004084A (en) * 2013-06-19 2015-01-08 奥野製薬工業株式会社 Sealing liquid for anodic oxidation film of aluminum alloy
CN104233428A (en) * 2014-09-26 2014-12-24 湖南大学 Method for improving alkaline resistance of anode oxide film on surface of aluminum or aluminum alloy material
CN104451821A (en) * 2014-11-15 2015-03-25 北京化工大学 Method for carrying out hole sealing treatment on anodic alumina, component of overhead contact system of electric railway, by using silane coupling agent
CN104911669A (en) * 2015-06-30 2015-09-16 马鞍山市华冶铝业有限责任公司 Aluminum profile sealing agent, preparation method, application and application method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020503460A (en) * 2017-01-13 2020-01-30 マクダーミッド アキューメン インコーポレーテッド Sealing anodized aluminum using a low temperature nickel-free process
CN107805837A (en) * 2017-09-05 2018-03-16 江苏飞拓界面工程科技有限公司 A kind of aluminium and aluminium alloy environmental protection normal-temperature hole sealing agent and its hole-sealing technology
CN108441923A (en) * 2018-03-23 2018-08-24 长沙小新新能源科技有限公司 A kind of hole-sealing technology of magnesium alloy
CN115537891A (en) * 2022-10-09 2022-12-30 广东华昌集团有限公司 Medium-temperature nickel-free sealing agent for aluminum and aluminum alloy anodic oxide film and sealing process

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