CN104043826A - Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler - Google Patents
Aluminum powder surface hydration processing method and application of aluminum powder in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler Download PDFInfo
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- CN104043826A CN104043826A CN201410311447.0A CN201410311447A CN104043826A CN 104043826 A CN104043826 A CN 104043826A CN 201410311447 A CN201410311447 A CN 201410311447A CN 104043826 A CN104043826 A CN 104043826A
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Abstract
The invention relates to an aluminum powder surface hydration processing method. The aluminum powder surface hydration processing method comprises the following steps that 1, the surface of aluminum powder is washed, filtered in a suction mode and dried; 2, the washed aluminum powder is placed into a solution with the volume ratio of water to ethyl alcohol being 3: 1 for hydroxylation processing; 3, a silane coupling agent is added, sulfhydrylation decoration is conducted on the aluminum powder, and filtering, washing and drying are conducted, so that the aluminum powder obtained after sulfhydrylation decoration is obtained. The invention further provides an application of the aluminum powder obtained according to the aluminum powder surface hydration processing method in preparing Al@Ag nuclear shell composite particle conductive and electromagnetic shielding filler. The aluminum powder serves as a raw material for preparing the conductive and electromagnetic shielding filler. The sulfydryl content of the surface of the processed aluminum powder is high and the processing method is simple and efficient; prepared Al@Ag nuclear shell composite particles have the advantages of being even and dense in silver shell layer, low in silver content, low in cost and the like, and have important application prospect in the fields of conductive and electromagnetic shielding composite materials and the like.
Description
Technical field
The present invention relates to conduction and electromagnetic shielding composite material field.
Background technology
Density that surface contracted payment Core-shell Composite Particles functional stuffing can overcome the metal packing existence such as traditional one pack system silver, copper and nickel is large, cost is high, difficult dispersed in polymeric matrix, easily cause the problems such as electrical property, mechanical property and the environmental resistance of composite be poor, therefore it is widely used in current high-performance conductive and electromagnetic protection composite.For Al@Ag Core-shell Composite Particles, it is simultaneously with aluminium and silver-colored various good characteristics.Aluminium is lighter, and its density is only 2.72g/cm
3, be approximately copper density 1/3rd.Its electric conductivity and thermal conductivity are better, are only second to silver, copper and gold, occupy the 4th, and in addition, the surface of aluminium can generate the aluminum oxide film of one deck densification, can effectively completely cut off contacting of aluminium and oxygen, prevent its oxidation, so it have excellent environmental suitability.
The current document about Al@Ag compound particle, to adopt two-step method at first, that is: first remove aluminium surface oxide layer, plate again layer of copper transition zone, finally carrying out chemical silvering, as: magnificent " silver coated aluminum powder technical study < < plating and the covering with paint > > (2007,26 (1): 23-25) proposing that wait of Zhang Zhen.There is complicated process of preparation in this method, covered effect is not fine and close, and the silver layer of compound particle is to be combined by the mode of physical absorption with aluminium kernel, causes between core and shell the problems such as adhesion is weak.For the problems referred to above Wencai Wang etc., " Dopamine-Induced Surface Functionalization for the Preparation of Al – Ag Bimetallic Microspheres < < Journal of The Electrochemical Society > > (2011; 158 (4): D228-D233) " proposed, its processing step is that dopamine modification is carried out in aluminium surface, by the amino Adsorption For Ag ion on dopamine, realizes in-situ chemical reduction silver.Although solved silver-colored nucleus in the technical problem of aluminium powder surface orientation deposition, owing to forming dopamine polymer layer on aluminium powder surface, therefore cause whole reaction time longer, cost is higher.CN102757670A and Wen Jianghong (shell structurre regulation and control and the performance study of silver-colored alclad Core-shell Composite Particles: [master thesis]. Wuhan: Wuhan University of Technology, 2013) propose do not needing to remove under the prerequisite of aluminium surface oxide layer, first on aluminium powder surface, carry out sulfhydrylation modification, set up Nano silver grain orientated deposition in the technical foundation on aluminium powder surface, finally obtained silver-colored shell densification and the strong Al@Ag Core-shell Composite Particles of nucleocapsid adhesion.This method, without adopting expensive special chemical reagent, has reduced preparation cost to a certain extent.Yet still there is the higher problem of silver content in the Al@Ag Core-shell Composite Particles that above two kinds of methods obtain.For example: when the silver content of this Core-shell Composite Particles is lower than 8% time, when its volume filling fraction in polymeric matrix is only 42.5% simultaneously, the specific insulation of composite is difficult to reach 10
-3the Ω cm order of magnitude.The present invention, by hydroxylating processing is carried out in aluminium powder surface, has improved aluminium powder density of surface hydroxyl, for silane coupler molecular linkage provides more avtive spot on aluminium powder surface, thus sulfhydryl content after raising aluminium powder surface chemical modification; By control surface hydroxylating treatment temperature and time, control aluminium powder surface topography simultaneously, guarantee that its pattern tries one's best under constant condition, in liquid phase chemical reduction silver process, by improving the nucleation quantity of silver-colored nucleus, obtain the Al Ag Core-shell Composite Particles of low silver content, high conductivity.
Summary of the invention
Technical problem to be solved by this invention has been to provide a kind of aluminium powder surface hydration processing method and the application in preparation Al@Ag Core-shell Composite Particles conduction and electromagnetic shielding filler thereof, solve existing preparation Al@Ag Core-shell Composite Particles and have that silver-colored consumption is large, cost is high, or the problem such as complex process.
The technical solution used in the present invention is, designs a kind of aluminium powder surface hydration processing method, comprises the following steps: step 1, aluminium powder surface is cleaned to suction filtration, dry; Step 2, the aluminium powder after cleaning is placed in to the solution that the volume ratio of water and ethanol is 3:1 carries out hydroxylating processing; Step 3, add silane coupler, above-mentioned aluminium powder is carried out to sulfhydrylation modification, suction filtration, washing, dry; Obtain the aluminium powder that sulfhydrylation is modified.
Wherein, in step 2, the temperature of solution is 70-75 ℃.
In step 2, the aluminium powder time that hydroxylating is processed in solution is 2-5 min.
The present invention also provides a kind of application in preparation Al@Ag Core-shell Composite Particles conduction and electromagnetic shielding filler according to the aluminium powder of above-mentioned surface hydration processing method acquisition, can be by above-mentioned aluminium powder as preparing the raw material of such conduction with electromagnetic shielding filler.
The present invention compared with prior art has following major advantage:
One, silver-colored shell is fine and close, and and thin, silver content is low, and cost is low.The present invention is mainly by hydroxylating processing is carried out in aluminium powder surface, improved aluminium powder density of surface hydroxyl, for silane coupler molecular linkage provides more avtive spot on aluminium powder surface, thereby sulfhydryl content after raising aluminium powder surface chemical modification, by control surface hydroxylating treatment temperature and time, control aluminium powder surface topography simultaneously, guarantee that its pattern tries one's best under constant condition, in liquid phase chemical reduction silver process, by improving the Nucleation of silver-colored nucleus, obtain the Al@Ag Core-shell Composite Particles of low silver content, high conductivity.The standby Al@Ag Core-shell Composite Particles of this legal system has good electric conductivity, and being expected to has important application prospect in fields such as conduction and electromagnetic shielding composite materials.
Its two, be easy to large-scale production.Preparation technology of the present invention, raw material form simple, and manufacturing cycle is short, easy to utilize.
The specific embodiment
A kind of aluminium powder surface hydration processing method that the present invention proposes, comprises the following steps:
Step 1, aluminium powder surface is cleaned suction filtration, dry;
Step 2, the aluminium powder after cleaning is placed in to the solution that the volume ratio of water and ethanol is 3:1 carries out hydroxylating processing;
Step 3, add silane coupler, above-mentioned aluminium powder is carried out to sulfhydrylation modification, suction filtration, washing, dry; Obtain the aluminium powder that sulfhydrylation is modified.
Wherein, in step 2, the temperature of solution is 70-75 ℃, and the aluminium powder time that hydroxylating is processed in this solution is 2-5 min.In step 3, silane coupler is γ-sulfydryl-propyl trimethoxy silicane, adds after silane coupler, and the reaction time is 4 h.
The present invention also provides a kind of application in preparation Al@Ag Core-shell Composite Particles conduction and electromagnetic shielding filler according to the aluminium powder of above-mentioned surface hydration processing method acquisition, can be by above-mentioned aluminium powder as preparing the raw material of such conduction with electromagnetic shielding filler.
Below in conjunction with instantiation, the invention will be further described.
The first embodiment
At the first embodiment, comprise: step 1, in 400mL deionized water, add 40g aluminium powder, stir, places 30 minutes, outwell supernatant, cleaning repeatedly, to supernatant without floating thing, suction filtration, vacuum drying is stand-by;
The volume ratio of step 2, water intaking and ethanol be mixed solution 400 mL of 3:1 in there-necked flask, and be placed in temperature control oil bath and heat, after controlling temperature and being 72 ℃, add above-mentioned aluminium powder, stir 3 min;
Step 3, add 30 mL γ-sulfydryl-propyl trimethoxy silicanes, be stirred to evenly, keep solution temperature at 72 ℃, react after 4h hour, filtration, vacuum drying is stand-by;
Step 4, preparation reducing solution, get 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 mL deionized waters, boils 5 min, is cooled to room temperature stand-by; Get 200 mL reducing solutions, then add 10 g polyvinylpyrrolidones (PVP), add the aluminium powder after 16 g surface chemical modifications, stir and be made into reduction mixture;
Step 5, to slowly dripping silver ammino solution 60 mL, silver ammino solution proportioning used: 8.5 wt % AgNO in mixed liquor
3, 5.5 wt % NH
3h
2o, 3 wt % NaOH, under magnetic stirrer, dropwise rear room temperature reaction 1h, standing, sedimentation, filtration;
Step 6, with running water, clean 4-5 time, in 60 ℃ of vacuum drying chambers, dry 3-5 h, obtains Al@Ag Core-shell Composite Particles.
The second embodiment
Comprise in a second embodiment: step 1, in 400mL deionized water, add 40g aluminium powder, stir, places 30 minutes, outwell supernatant, cleaning repeatedly, to supernatant without floating thing, suction filtration, vacuum drying is stand-by;
The volume ratio of step 2, water intaking and ethanol be mixed solution 400 mL of 3:1 in there-necked flask, and be placed in temperature control oil bath and heat, after controlling temperature and being 74 ℃, add above-mentioned aluminium powder, stir 2 min;
Step 3, add 30 mL γ-sulfydryl-propyl trimethoxy silicanes, be stirred to evenly, keep solution temperature at 74 ℃, react after 4h hour, filtration, vacuum drying is stand-by;
Step 4, preparation reducing solution, get 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 mL deionized waters, boils 5 min, is cooled to room temperature stand-by; Get 200 mL reducing solutions, then add 10 g polyvinylpyrrolidones (PVP), add the aluminium powder after 16 g surface chemical modifications, stir and be made into reduction mixture;
Step 5, to slowly dripping silver ammino solution 60 mL, silver ammino solution proportioning used: 8.5 wt % AgNO in mixed liquor
3, 5.5 wt % NH
3h
2o, 3 wt % NaOH, 3 wt % NaOH, under magnetic stirrer, dropwise rear room temperature reaction 1h, standing, sedimentation, filtration;
Step 6, with running water, clean 4-5 time, in 60 ℃ of vacuum drying chambers, dry 3-5 h, obtains Al@Ag Core-shell Composite Particles.
The 3rd embodiment
At the 3rd embodiment, comprise: step 1, in 400mL deionized water, add 40g aluminium powder, stir, places 30 minutes, outwell supernatant, cleaning repeatedly, to supernatant without floating thing, suction filtration, vacuum drying is stand-by;
The volume ratio of step 2, water intaking and ethanol be mixed solution 400 mL of 3:1 in there-necked flask, and be placed in temperature control oil bath and heat, after controlling temperature and being 75 ℃, add above-mentioned aluminium powder, stir 2 min;
Step 3, add 30 mL γ-sulfydryl-propyl trimethoxy silicanes, be stirred to evenly, keep solution temperature at 75 ℃, react after 4h hour, filtration, vacuum drying is stand-by;
Step 4, preparation reducing solution, get 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 mL deionized waters, boils 5 min, is cooled to room temperature stand-by; Get 200 mL reducing solutions, then add 10 g polyvinylpyrrolidones (PVP), add the aluminium powder after 16 g surface chemical modifications, stir and be made into reduction mixture;
Step 5, to slowly dripping silver ammino solution 60 mL, silver ammino solution proportioning used: 8.5 wt % AgNO in mixed liquor
3, 5.5 wt % NH
3h
2o, 3 wt % NaOH, 3 wt % NaOH, under magnetic stirrer, dropwise rear room temperature reaction 1h, standing, sedimentation, filtration;
Step 6, with running water, clean 4-5 time, in 60 ℃ of vacuum drying chambers, dry 3-5 h, obtains Al@Ag Core-shell Composite Particles.
The 4th embodiment
At the 4th embodiment, comprise: step 1, in 400mL deionized water, add 40g aluminium powder, stir, places 30 minutes, outwell supernatant, cleaning repeatedly, to supernatant without floating thing, suction filtration, vacuum drying is stand-by;
The volume ratio of step 2, water intaking and ethanol be mixed solution 400 mL of 3:1 in there-necked flask, and be placed in temperature control oil bath and heat, after controlling temperature and being 70 ℃, add above-mentioned aluminium powder, stir 5 min;
Step 3, add 30 mL γ-sulfydryl-propyl trimethoxy silicanes, be stirred to evenly, keep solution temperature at 70 ℃, react after 4h hour, filtration, vacuum drying is stand-by;
Step 4, preparation reducing solution, get 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 mL deionized waters, boils 5 min, is cooled to room temperature stand-by; Get 200 mL reducing solutions, then add 10 g polyvinylpyrrolidones (PVP), add the aluminium powder after 16 g surface chemical modifications, stir and be made into reduction mixture;
Step 5, to slowly dripping silver ammino solution 60 mL, silver ammino solution proportioning used: 8.5 wt % AgNO in mixed liquor
3, 5.5 wt % NH
3h
2o, 3 wt % NaOH, 3 wt % NaOH, under magnetic stirrer, dropwise rear room temperature reaction 1h, standing, sedimentation, filtration;
Step 6, with running water, clean 4-5 time, in 60 ℃ of vacuum drying chambers, dry 3-5 h, obtains Al@Ag Core-shell Composite Particles.
The 5th embodiment
At the 5th embodiment, comprise: step 1, in 400mL deionized water, add 40g aluminium powder, stir, places 30 minutes, outwell supernatant, cleaning repeatedly, to supernatant without floating thing, suction filtration, vacuum drying is stand-by;
The volume ratio of step 2, water intaking and ethanol be mixed solution 400 mL of 3:1 in there-necked flask, and be placed in temperature control oil bath and heat, after controlling temperature and being 71 ℃, add above-mentioned aluminium powder, stir 4 min;
Step 3, add 30 mL γ-sulfydryl-propyl trimethoxy silicanes, be stirred to evenly, keep solution temperature at 71 ℃, react after 4h hour, filtration, vacuum drying is stand-by;
Step 4, preparation reducing solution, get 22.5 g glucose, 2 g sodium potassium tartrate tetrahydrates and 500 mL deionized waters, boils 5 min, is cooled to room temperature stand-by; Get 200 mL reducing solutions, then add 10 g polyvinylpyrrolidones (PVP), add the aluminium powder after 16 g surface chemical modifications, stir and be made into reduction mixture;
Step 5, to slowly dripping silver ammino solution 60 mL, silver ammino solution proportioning used: 8.5 wt % AgNO in mixed liquor
3, 5.5 wt % NH
3h
2o, 3 wt % NaOH, 3 wt % NaOH, under magnetic stirrer, dropwise rear room temperature reaction 1h, standing, sedimentation, filtration;
Step 6, with running water, clean 4-5 time, in 60 ℃ of vacuum drying chambers, dry 3-5 h, obtains Al@Ag Core-shell Composite Particles.
The conducting resinl volume resistance that following table is the Al Ag Core-shell Composite Particles that draws in the first to five embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. an aluminium powder surface hydration processing method, is characterized in that, comprises the following steps:
Step 1, aluminium powder surface is cleaned suction filtration, dry;
Step 2, the aluminium powder after cleaning is placed in to the solution that the volume ratio of water and ethanol is 3:1 carries out hydroxylating processing;
Step 3, add silane coupler, above-mentioned aluminium powder is carried out to sulfhydrylation modification, suction filtration, washing, dry; Obtain the aluminium powder that sulfhydrylation is modified.
2. aluminium powder surface hydration processing method according to claim 1, is characterized in that, in step 2, the temperature of solution is 70-75 ℃.
3. aluminium powder surface hydration processing method according to claim 1, is characterized in that, in step 2, the aluminium powder time that hydroxylating is processed in solution is 2-5min.
4. the application of the aluminium powder that method obtains according to claim 1 in preparation Al Ag Core-shell Composite Particles conduction and electromagnetic shielding filler, is characterized in that: by described aluminium powder as preparation Al Ag Core-shell Composite Particles conduction the raw material with electromagnetic shielding filler.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414072A (en) * | 2017-07-03 | 2017-12-01 | 湖南宁乡吉唯信金属粉体有限公司 | A kind of preparation method of alumina-coated aluminium powder |
| CN108326293A (en) * | 2018-01-11 | 2018-07-27 | 宁波广新纳米材料有限公司 | The production method of silver coated nickel powder |
| CN111426732A (en) * | 2020-04-03 | 2020-07-17 | 中国船舶重工集团公司第七二五研究所 | Preparation method of AgX @ Ag core-shell electrode material |
| CN112264613A (en) * | 2020-10-20 | 2021-01-26 | 西安工程大学 | Preparation method of nickel-coated aluminum powder for electromagnetic shielding |
| CN114700489A (en) * | 2022-06-07 | 2022-07-05 | 天津德恒永裕金属表面处理有限公司 | Preparation process of silver-coated aluminum powder and silver-coated aluminum powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633798A (en) * | 2009-08-17 | 2010-01-27 | 昆明理工大学 | Preparation method of aluminum paste for water paint |
| JP2010221081A (en) * | 2009-03-19 | 2010-10-07 | Asahi Kasei Chemicals Corp | Supported body of composite particles, method of producing the same, and method of producing carboxylate ester |
| CN102581272A (en) * | 2012-02-06 | 2012-07-18 | 西安近代化学研究所 | Method for preparing nanometer aluminum composite powder coated with nitro-cotton |
| CN102757670A (en) * | 2012-07-12 | 2012-10-31 | 武汉理工大学 | Preparation method of conductive filler |
-
2014
- 2014-07-02 CN CN201410311447.0A patent/CN104043826B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010221081A (en) * | 2009-03-19 | 2010-10-07 | Asahi Kasei Chemicals Corp | Supported body of composite particles, method of producing the same, and method of producing carboxylate ester |
| CN101633798A (en) * | 2009-08-17 | 2010-01-27 | 昆明理工大学 | Preparation method of aluminum paste for water paint |
| CN102581272A (en) * | 2012-02-06 | 2012-07-18 | 西安近代化学研究所 | Method for preparing nanometer aluminum composite powder coated with nitro-cotton |
| CN102757670A (en) * | 2012-07-12 | 2012-10-31 | 武汉理工大学 | Preparation method of conductive filler |
Non-Patent Citations (1)
| Title |
|---|
| 文江鸿: "银包铝核壳符合粒子的壳层结构调控与性能研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414072A (en) * | 2017-07-03 | 2017-12-01 | 湖南宁乡吉唯信金属粉体有限公司 | A kind of preparation method of alumina-coated aluminium powder |
| CN108326293A (en) * | 2018-01-11 | 2018-07-27 | 宁波广新纳米材料有限公司 | The production method of silver coated nickel powder |
| CN111426732A (en) * | 2020-04-03 | 2020-07-17 | 中国船舶重工集团公司第七二五研究所 | Preparation method of AgX @ Ag core-shell electrode material |
| CN112264613A (en) * | 2020-10-20 | 2021-01-26 | 西安工程大学 | Preparation method of nickel-coated aluminum powder for electromagnetic shielding |
| CN112264613B (en) * | 2020-10-20 | 2023-02-03 | 西安工程大学 | Preparation method of nickel-coated aluminum powder for electromagnetic shielding |
| CN114700489A (en) * | 2022-06-07 | 2022-07-05 | 天津德恒永裕金属表面处理有限公司 | Preparation process of silver-coated aluminum powder and silver-coated aluminum powder |
| CN114700489B (en) * | 2022-06-07 | 2022-08-12 | 天津德恒永裕金属表面处理有限公司 | Preparation process of silver-coated aluminum powder and silver-coated aluminum powder |
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