CN104497645B - Aluminum oxide sol composite slurry - Google Patents
Aluminum oxide sol composite slurry Download PDFInfo
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- CN104497645B CN104497645B CN201410714532.1A CN201410714532A CN104497645B CN 104497645 B CN104497645 B CN 104497645B CN 201410714532 A CN201410714532 A CN 201410714532A CN 104497645 B CN104497645 B CN 104497645B
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- aluminum oxide
- oxide sol
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- alumina sol
- composite slurry
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Abstract
The invention relates to the technical field of conductive coatings and aims at providing aluminum oxide sol composite slurry. The aluminum oxide sol composite slurry is prepared by mixing the following raw materials in percentage by weight: 20-50% of nanometer tin dioxide, 30-60% of nanometer aluminum oxide sol, 5-10% of nanometer silver powder, 10-30% of nanometer copper powder and 0.5-2% of a dispersing agent, wherein the mass concentration of the nanometer aluminum oxide sol is 20-25%. A preparation process disclosed by the invention is simple; raw materials are relatively low in cost and available; and the large-scale industrial production is easily realized. A coating product prepared from the aluminum oxide sol composite slurry has the characteristics of high temperature resistance, hydrophobicity, high conductivity and pollution resistance.
Description
Technical field
The invention belongs to conductive coating technical field, it is combined slip particularly to alumina sol.
Background technology
Conductive coating be a kind of be applied to non-conductive substrate surface so as to have the surface layer of conductive capability, can be applicable to prevent
The fields such as industry, national defence, electronics such as rust oil tank, radome.From the 1950's, it is conductive related that China just starts independent development
Coating.Electrostatic problem annoyings the industrial quarters of China always, reverses this predicament for thorough, in have developed earliest at that time one
Criticize antistatic conductive electrocoat, coating used by coating mostly is carbon series conductive coating.Since the eighties, the electrically-conducting paint field of China is sent out
Exhibition is swift and violent, and progressive very big, such as Xie Ming of Kunming Institute of Precious Metals etc., using advanced solidification atomization technique, prepares new silver-plated
Copper powder electrically-conducting paint, its electric conductivity is excellent, and specific insulation is up to 5.0 × 10-4Ω cm, or even the conduction close to silver system
Coating, to solve copper oxidizable as conductive filler simultaneously, the expensive shortcoming of silver system electrically-conducting paint, and prospect allows people to have an optimistic view of.
Meanwhile, some domestic scientific research institutions have also been made substantial amounts of research, and the preferable coating of electric conductivity obtaining.
However, the conductive coating that current industrial circle is commonly used mainly is formed using the coating of filled-type electrically-conducting paint, therein
Main film forming substance is mainly high molecular polymer, such as epoxy resin, acrylic resin, polyurethane resin, fluorocarbon resin etc., and
Add the Organic substances such as a certain amount of coupling agent, plasticizer, thickening agent, this makes current conductive coating mostly be applied to antistatic
Field, electric conductivity is insufficient for some and requires higher field, particularly electronic applications to electrical conductivity；And current leads
Electrocoat mainly uses in the relatively low environment of room temperature or temperature, and resistance to elevated temperatures is poor, and easy contamination.
Content of the invention
The technical problem to be solved in the present invention is to overcome not enough present in existing conductive coating technology, provide a kind of oxygen
Change Alumina gel and be combined slip.The prepared conductive coating of slip is combined using this alumina sol there is good electric conductivity, resistance to height
Warm nature and hydrophobicity.
For solving technical problem, the solution of the present invention is：
The invention provides a kind of alumina sol is combined slip, it is by the raw material mixing of following weight percentage
Become：Nano-stannic oxide 20-50%, nano alumina sol 30-60%, nanometer silver powder 5～10%, copper nanoparticle 10～30%
With dispersant 0.5-2%；Wherein, the mass concentration of nano alumina sol is 20～25%.
In the present invention, the particle diameter of described nano-stannic oxide is 50～70nm.
In the present invention, in described nano alumina sol, the particle diameter of nano aluminium oxide is 10～20nm.
In the present invention, the particle diameter of described nanometer silver powder is 50～80nm.
In the present invention, the particle diameter of described copper nanoparticle is 50nm.
In the present invention, described dispersant is 120,000 basic sodium sulfonates.
In the present invention, described matrix is cement plate or glass.Cement plate and glass can be selected for general cement plate for building
And glass.
The preparation method that the alumina sol of the present invention is combined slip comprises the following steps：Dispersant is added nano oxidized
In Alumina gel, stir 10 minutes under the stir speed (S.S.) of 1000～1200r/min；Then add nano-stannic oxide while stirring
Powder body, continues stirring 0.5 hour；Then sequentially add nanometer silver powder and copper nanoparticle, continue stirring 1 hour to being uniformly dispersed,
Obtain alumina sol and be combined slip.
It is combined the matrix that slip preparation has high temperature resistant hydrophobic conductive coating using alumina sol of the present invention, including
Following steps：
(1) alumina sol is combined by slip using spraying process and is sprayed on matrix surface, form the matrix of band coating；Spray altogether
Apply n-layer, the thickness of every layer of coating is 10～20 μm, n >=1；
(2) by the matrix of band coating in 600 DEG C of high temperature furnace heat treatment 40 minutes, then deionized water cleaning table
Face, obtains the matrix with high temperature resistant hydrophobic conductive coating.
Compared with prior art, the present invention has the beneficial effects that：
1st, the present invention is used for preparing the matrix of band coating, its preparation process is simple, the selected cost of raw material is relatively low,
Easily obtain；Large-scale industrial production can easily be realized using conventional cement plate or glass as matrix.
2nd, the high temperature resistant hydrophobic conductive coating being obtained using the present invention, after tested, its resistivity up to 50 μ Ω cm with
Under, common conductive resistance of coating rate is about 102～104μΩ·cm；More than 100 degree be can reach to the static contact angle of water, commonly
Electrically-conducting paint is only 50～90 degree to the static contact angle of water；Can be normally only resistance to resistance to 600 degree of high temperature above, common conductive coating
200～400 degree of high temperature.Therefore layer has high temperature resistant, hydrophobic, high conductivity, stain resistant characteristic.
Specific embodiment
Below by example, the present invention is further described.
Alumina sol in the present invention is combined slip, is to be mixed by the raw material of following weight percentage：Nanometer
Tin ash 20-50%, nano alumina sol 30-60%, nanometer silver powder 5～10%, copper nanoparticle 10～30% and dispersion
Agent 0.5-2%.
In the present embodiment, the purity that nano-stannic oxide is produced from Shanghai Jing Chun biochemical technology limited company is
99.99% product, particle diameter is 50～70nm；Nano alumina sol selects Hefei Xiang positizing Science and Technology Ltd. to produce
Mass concentration is 20～25% product, and particle diameter is 10～20nm；Nanometer silver powder passes through silver nitrate and (analyzes pure, molecular weight：
169.87, Chemical Reagent Co., Ltd., Sinopharm Group) (analyze pure, molecular weight with glucose：198.17, Chinese medicines group chemistry examination
Agent company limited) issue raw reduction reaction at 25 DEG C and be prepared from, particle diameter is 50～80nm；Copper nanoparticle selects the brilliant pure life in Shanghai
The purity changing Science and Technology Co., Ltd.'s production is 99.9% product, and particle diameter is 50nm；Dispersant selects 120,000 basic sulphurs
Sour sodium, the analysis net product that Chemical Reagent Co., Ltd., Sinopharm Group produces, molecular weight is 348.48.
Alumina sol is combined the preparation method of slip, comprises the following steps：
Dispersant is added in nano alumina sol, stirs 10 minutes under the stir speed (S.S.) of 1000～1200r/min；
Then add nano tin oxide powder while stirring, continue stirring 0.5 hour；Then nanometer silver powder and Nanometer Copper are sequentially added
Powder, continues stirring 1 hour to being uniformly dispersed, obtains alumina sol and be combined slip.
There is the preparation method of the matrix of high temperature resistant hydrophobic conductive coating, comprise the following steps：
(1) alumina sol is combined by slip using spraying process and is sprayed on matrix surface, form the matrix of band coating；Spray altogether
Apply n-layer, the thickness of every layer of coating is 10～20 μm, n >=1；
(2) by the matrix of band coating in 600 DEG C of high temperature furnace heat treatment 40 minutes, then deionized water cleaning table
Face, obtains the matrix with high temperature resistant hydrophobic conductive coating.
Test data in each embodiment see table (number of each component is mass fraction)：
Last in addition it is also necessary to it is noted that listed above be only the present invention be embodied as example.Obviously, the present invention is not
It is limited to above example, can also have many deformation.Those of ordinary skill in the art can be straight from present disclosure
Connect all deformation derived or associate, be all considered as protection scope of the present invention.
Claims (2)
1. a kind of alumina sol is combined slip it is characterised in that being to be mixed by the raw material of following weight percentage：Receive
Rice tin ash 20-50%, nano alumina sol 30-60%, nanometer silver powder 5～10%, copper nanoparticle 10～30% and point
Powder 0.5-2%；
Wherein, the particle diameter of nano-stannic oxide is 50～70nm；The mass concentration of nano alumina sol is 20～25%, nanometer
The particle diameter of aluminium oxide is 10～20nm；The particle diameter of nanometer silver powder is 50～80nm；The particle diameter of copper nanoparticle is 50nm.
2. method according to claim 1 is it is characterised in that described dispersant is dodecylbenzene sodium sulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714532.1A CN104497645B (en) | 2014-11-29 | 2014-11-29 | Aluminum oxide sol composite slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714532.1A CN104497645B (en) | 2014-11-29 | 2014-11-29 | Aluminum oxide sol composite slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104497645A CN104497645A (en) | 2015-04-08 |
| CN104497645B true CN104497645B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410714532.1A Expired - Fee Related CN104497645B (en) | 2014-11-29 | 2014-11-29 | Aluminum oxide sol composite slurry |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860605B (en) * | 2016-04-18 | 2017-03-15 | 中国科学院广州能源研究所 | A kind of preparation method of nanometer silver/antimony-doped tin oxide composite transparent conduction heat-reflective coating |
| CN107502011B (en) * | 2017-10-10 | 2019-12-17 | 张家港外星人新材料科技有限公司 | Antistatic inorganic nano-coating composition, transparent coating and antistatic product |
| CN109535788B (en) * | 2018-12-18 | 2020-11-13 | 浙江大学自贡创新中心 | Composite nano sol for silver alloy protection and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805531A (en) * | 2010-02-23 | 2010-08-18 | 浙江大学 | Preparation method of organic-inorganic composite collosol for the surface corrosion prevention of metal aluminum sheet |
| CN102099310A (en) * | 2008-07-17 | 2011-06-15 | 旭硝子株式会社 | Water-repellent substrate and process for production thereof |
| CN102408806A (en) * | 2011-11-03 | 2012-04-11 | 浙江大学 | High-emission transparent heat-insulating paint in atmospheric window regions and preparation method thereof |
-
2014
- 2014-11-29 CN CN201410714532.1A patent/CN104497645B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102099310A (en) * | 2008-07-17 | 2011-06-15 | 旭硝子株式会社 | Water-repellent substrate and process for production thereof |
| CN101805531A (en) * | 2010-02-23 | 2010-08-18 | 浙江大学 | Preparation method of organic-inorganic composite collosol for the surface corrosion prevention of metal aluminum sheet |
| CN102408806A (en) * | 2011-11-03 | 2012-04-11 | 浙江大学 | High-emission transparent heat-insulating paint in atmospheric window regions and preparation method thereof |
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| CN104497645A (en) | 2015-04-08 |
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Granted publication date: 20170222 Termination date: 20211129 |