CN108608003B - Preparation method of ultrathin gold foil sheet and gold foil powder - Google Patents
Preparation method of ultrathin gold foil sheet and gold foil powder Download PDFInfo
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- CN108608003B CN108608003B CN201611139733.9A CN201611139733A CN108608003B CN 108608003 B CN108608003 B CN 108608003B CN 201611139733 A CN201611139733 A CN 201611139733A CN 108608003 B CN108608003 B CN 108608003B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
- B22F1/0551—Flake form nanoparticles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/068—Flake-like particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Abstract
The invention relates to a preparation method of an ultrathin gold foil, which comprises the following steps of putting 1 part of zinc or palladium powder and 500-30000 parts of distilled water into a reaction vessel for mixing according to the parts by weight to form a mixed solution; shaking the mixed solution until the zinc or palladium powder is uniformly dispersed in the distilled water, and stirring the mixed solution to keep the zinc or palladium powder uniformly dispersed in the distilled water; adding 4.22-630 parts by weight of chloroauric acid solution with the concentration of 0.1-0.5 mol/L into the mixed solution; stirring the mixed solution for 3-20 minutes; standing for 0.08 h, stirring the mixed solution by using a magnetic stirrer for 1-5 h to obtain the gold foil. Compared with the traditional gold foil preparation process and other gold foil preparation methods, the preparation method has the advantages of simple process, no need of a large amount of manpower and complex equipment, low cost and capability of obtaining the ultrathin gold foil.
Description
Technical Field
The invention relates to a preparation process of a gold foil, in particular to a preparation method of an ultrathin gold foil and gold foil powder.
Background
1. Use of gold foil
The gold foil has wide application, and can be applied to the fields of building decoration, medicines, cosmetics, foods, furniture, RMB anti-counterfeiting, packaging decoration, ceramic craft bottles and the like.
(I) eating
In recent years, gold foil eating has been prevalent in japan and south-east asia, and gold foil dinner, gold foil wine, gold foil water, gold foil candy, and gold foil cake have come out in succession. The edible wine added with a small amount of gold foil has health promotion effects of removing toxic substance and caring skin. The world health organization food additives codex committee formally placed gold into the category of food additives in 1983. Substances released by the ministry of health of China as new resources of foods are divided into nine types, wherein the eighth type of minerals and trace elements are definitely loaded with 'gold foil'. At present, a plurality of enterprises produce the gold foil wine in China.
(II) medical use
In the modern highly developed medical science, the gold foil is still used as a prescription of the medicine, becomes a 'gold dansheng' for robbing hands in the sea and abroad, and for example, famous Chinese patent medicines such as 'niuhuanggong pill', 'huangqingxin pill', 'niuhuangzhan' pill and the like of the Chinese patent medicines of the same benevolence hall in China are all used as the prescription of the medicine for entering the gold foil or are wrapped by the gold foil. Gold foil is also used as the bias of infant fright in China folks. In modern surgery, gold foil is used for the treatment of burned skin and surgical suture.
(III) craft gift
The craft gift covered by the gold foil has the advantages that the cost is low compared with that of a pure gold product, the luxury of gold is reflected, and the essence of art is kept; the gold can be refulged and stored forever, and can be sublimated to integrate decoration, artistic appreciation and treasure collection into a whole more than gold, thereby becoming the latest trend at present. At present, the field of gold foil handicraft articles can be called as a colorful picture, such as a gold foil picture, a gold image card, a pure gold business card, a pure gold foil photo, a crystal gold foil ornament, a key ring, a pyramid signboard and the like. In the current market, gold foil artware is more new, and the picture is made into a transparent film which is compounded on a negative film stuck with gold foil to make a high-grade simulated gold foil picture, a gold foil picture with more complicated process, a ceramic glaze gold foil picture and the like.
(IV) cosmetic
In modern society, the development of cosmetics by gold foil has become a fashion at home and abroad.
(V) architectural decoration
A small amount of gold can have the effect of making the body from gold. The gilding technique is widely used in archaizing buildings, modern buildings, pyramid tablets and the like, such as Buddha statue gilding, carved beam painting gilding, decorative gilding and the like. The most notable gold-clad buildings are: beijing Tiananmen, people's hall, central television station, Shanghai Oriental pearl, Tibet Bodala palace, etc. In addition, the gold foil is also a raw material for manufacturing high-grade painting ink.
2. Traditional preparation method of gold foil
The preparation method of the gold foil mainly adopts a forging technology. The gold foil production process is unique, the technical requirement is high, and the foil manufacturing industry belongs to labor-intensive industry.
The conventional gold foil manufacturing process generally goes through twelve procedures as shown in the following figure. The method comprises the following steps: gold proportioning, gold melting, leaf beating, twisting, gold falling, gold dipping, gold beating, loading, pit punching, fine punching, bleeding and gold foil cutting.
The gold proportion is as follows: taking out raw material gold from the vault, proportioning according to special requirements of product varieties, and adding silver and copper elements in a quantitative proportion to make the gold content meet the requirements.
And (3) gold melting: and putting the proportioned gold into a crucible, melting the proportioned gold into gold water at high temperature, enabling the doped trace silver and copper elements to uniformly enter the crucible, separating out dregs, pouring the gold water into a measuring iron tank, and cooling the gold water to obtain the gold bar.
Leaf beating: beating the thick gold strips into thin gold strips, and cutting the thin gold strips into thin gold leaves like paper.
Making a twister: cutting the gold leaves into small gold leaves by a bamboo strip cutter, wherein the gold leaves with the size are called gold twigs.
Gold precipitation: the black gold paper is put into a constant temperature box for heating, and gold twister is arranged for the next procedure, so that gold can be quickly extended.
Dipping with gold and twigs: the gold twister is respectively dipped by fingertips and put into a black gold paper bag, and two black gold papers clamp one gold twister, and all the gold twisters are required to be put into the center of the black gold paper.
Opening a gold opener: placing the black gold paper bag coated with the gold twister on a foil beating machine to beat the gold twister which is thin like a paper sample in a rotating way to be thinner and more open.
Assembling an opener: the opened golden twigs in the black-gold paper bag are called 'gold opener', the golden twigs need to be continuously beaten into foil, the 'gold opener' is carefully and wingedly picked up by goose hair and is put into the black-gold paper bag (commonly called as 'jiasheng'), and the procedure is called as loading opener.
Kang bed: the 'opener' is put into an electric furnace and is controlled at constant temperature, so that the electric furnace is not influenced by the temperature and humidity of the natural space.
And (3) thinning: the 'domestic' bag is continuously put into a foil beating machine to be beaten in a rotating way until the bag cannot be thinned any more and then becomes thin, and the beating method is called 'thin beating'. At this time, the leather is made into thin leather like cicada's wing, soft silk like satin, and light and rough gold foil. Therefore, this sequence is generally called foil breaking and is very critical.
And (3) providing: the gold foil in the black gold paper bag is then blown into the soft and fine grained paper of Maotai paper by goose feather mouth wind, and the medicine is called as the pill.
Cutting gold foil: cutting the gold foil into regular shapes with a bamboo knife is called foil cutting.
Third, gold foil manufacturing method reported in related patent
The method comprises placing cellophane in vacuum space, arranging a melting and steaming device in the vacuum space, melting and vaporizing gold, making vaporized gold ions in vacuum state in radiation and particle collision reflection state, making gold in form of thin film micropowder adhere to cellophane with static electricity and strong suction force, arranging protective paper above and below the cellophane adhered with gold micropowder, transferring the cellophane adhered with gold micropowder onto the protective paper by protective transfer machine, and tearing off the cellophane and the upper and lower protective paper to obtain the final product. The manufacturing device comprises a rotating mechanism consisting of a vacuum pump, a moving wheel, a rolling shaft, a chain wheel and a roller wheel, and a laminating transfer printing.
However, both the conventional preparation process and the manufacturing method reported in the patent are complex in process, require a large amount of manpower and complex equipment, and are high in cost.
Disclosure of Invention
In order to solve the problems of complex process, large manpower and equipment investment and high cost existing in the traditional process for manufacturing the gold foil and the preparation method reported in the patent, the invention provides a preparation method of an ultrathin gold foil to solve the problems.
A preparation method of an ultrathin gold foil comprises the following steps,
firstly, putting 1 part of zinc or palladium powder and 500-30000 parts of distilled water into a reaction vessel to be mixed according to parts by weight to form a mixed solution;
secondly, shaking the mixed solution until the zinc or palladium powder is uniformly dispersed in the distilled water, and stirring the mixed solution to keep the zinc or palladium powder uniformly dispersed in the distilled water;
thirdly, adding 4.22 to 630 parts by weight of chloroauric acid solution with the concentration of 0.1 to 0.5mol/L into the mixed solution;
fourthly, stirring the mixed solution for 3 to 20 minutes;
and fifthly, standing for 0.08-48 hours, stirring the mixed solution by using a magnetic stirrer, rotating a stirrer of the magnetic stirrer at the bottom in the reaction vessel after the magnetic stirrer is started, forming a vortex by the solution under the action of the stirrer, allowing the liquid below the vortex to flow to form negative pressure to generate suction, and allowing the gold nanoparticle aggregate to easily fall to the bottom of the container under the action of external force under the action of gravity.
And sixthly, stirring by using a magnetic stirrer, wherein the rotating speed of the magnetic stirrer is controlled to be 300-2000 rpm, and the stirring time is 1-5 hours, so that the gold foil can be obtained. It should be noted that, through a large number of experimental demonstrations, the stirrer can be tightly attached to the bottom of the container only when the rotating speed of the stirrer is controlled to be 300 rpm to 2000 rpm, and the gold nanoparticle aggregate is rolled to form the ultrathin gold foil.
Further, preferably, the distilled water is double distilled water.
Further, the reaction vessel is a glass vessel.
Preferably, the zinc or palladium powder has a purity of at least 99.99% and a particle size of 200 μm to 800 μm.
Wherein in the second step, the mixed solution is vibrated by ultrasonic waves for 3-5 minutes.
The thickness of the gold foil is 10nm-500 μm, and the width of the gold foil is 500 μm-1 cm.
A preparation method of gold foil powder, which comprises the following steps of preparing the gold foil prepared by the preparation method of the ultrathin gold foil,
firstly, taking out the gold foil, washing the gold foil with secondary distilled water, putting the gold foil into the secondary distilled water,
secondly, oscillating for 2-5 seconds by using ultrasonic waves,
and thirdly, drying by using a thermal drying method to obtain the gold foil powder.
Has the advantages that: the preparation method is simple, (2) compared with the traditional gold foil preparation process and other gold foil preparation methods, a large amount of manpower and complex equipment are not required to be invested, the production cost is greatly reduced, (3) the reproducibility is extremely strong, the investment production is convenient, and (4) the gold foil prepared by the preparation method is ultra-thin, the thickness is only 10nm-500 mu m, and the width is only 500 mu m-1 cm.
Detailed Description
The invention discloses a specific embodiment of a preparation method of an ultrathin gold foil,
example 1: according to the weight portion, 1 portion of zinc or palladium powder with the purity of 99.99 percent and the particle size of 200 mu m and 500 portions of secondary distilled water are placed into a beaker to be mixed to form a mixed solution, the mixed solution is vibrated by ultrasonic waves for 3 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed solution is stirred to keep the zinc or palladium powder uniformly dispersed. 4.22 parts by weight of a chloroauric acid solution having a concentration of 0.1mol was added to the mixed solution, and the mixed solution was stirred for 3 minutes, and the stirring was stopped. And standing for 5 minutes, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer to be 2000 rpm, and stirring for 1 hour to obtain the gold foil. The gold foil has a thickness of 10nm to 300 μm and a width of 500 μm to 8 mm.
Example 2: according to the weight portion, 1 portion of zinc or palladium powder with the purity of at least 99.99 percent and the grain diameter of 400 mu m and 10000 portions of secondary distilled water are placed in a beaker to be mixed to form a mixed solution, the mixed solution is vibrated by ultrasonic waves for 4 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed solution is stirred to keep the zinc or palladium powder uniformly dispersed. 50 parts by weight of a chloroauric acid solution with a concentration of 0.3mol was added to the mixed solution, and the mixed solution was stirred for 10 minutes, and the stirring was stopped. And standing for 1 hour, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer at 1500 rpm, and stirring for 2 hours to obtain the gold foil. The gold foil has a thickness of 100nm-500 μm and a width of 500 μm-1 cm.
Example 3: according to the weight portion, 1 portion of zinc or palladium powder with the purity of at least 99.99 percent and the particle size of 600 mu m and 20000 portions of secondary distilled water are placed in a beaker to be mixed to form a mixed solution, the mixed solution is vibrated by ultrasonic waves for 4 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed solution is stirred to keep the zinc or palladium powder uniformly dispersed. Adding 150 parts by weight of chloroauric acid solution with the concentration of 0.4mol into the mixed solution, stirring the mixed solution for 15 minutes, stopping stirring, standing for 10 hours, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer at 1000 revolutions per minute, and stirring for 4 hours to obtain the gold foil. The gold foil has a thickness of 100nm-500 μm and a width of 500 μm-8 mm.
Example 4: according to the weight portion, 1 portion of zinc or palladium powder with the purity of at least 99.99 percent and the grain diameter of 800 mu m and 30000 portions of secondary distilled water are placed in a beaker to be mixed to form mixed liquid, the mixed liquid is vibrated by ultrasonic waves for 5 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed liquid is stirred to keep the zinc or palladium powder uniformly dispersed. 630 parts by weight of a chloroauric acid solution with a concentration of 0.5mol was added to the mixed solution, and the mixed solution was stirred for 20 minutes, and the stirring was stopped. And standing for 48 hours, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer at 300 revolutions per minute, and stirring for 5 hours to obtain the gold foil. The gold foil has a thickness of 80nm to 500 μm and a width of 500 μm to 1 cm.
The invention relates to a specific embodiment of a preparation method of gold foil powder,
example 1: according to the weight portion, 1 portion of zinc or palladium powder with the purity of 99.99 percent and the particle size of 200 mu m and 500 portions of secondary distilled water are placed into a beaker to be mixed to form a mixed solution, the mixed solution is vibrated by ultrasonic waves for 3 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed solution is stirred to keep the zinc or palladium powder uniformly dispersed. 4.22 parts by weight of a chloroauric acid solution having a concentration of 0.1mol was added to the mixed solution, and the mixed solution was stirred for 3 minutes, and the stirring was stopped. And standing for 0.08 hour, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer to be 2000 rpm, and stirring for 1 hour to obtain the gold foil. And taking out the gold foil, washing with secondary distilled water, putting into the secondary distilled water after washing, oscillating for 2 seconds by ultrasonic waves, and finally drying by a thermal drying method to finally obtain the gold foil powder.
Example 2: according to the weight portion, 1 portion of zinc or palladium powder with the purity of at least 99.99 percent and the grain diameter of 400 mu m and 10000 portions of secondary distilled water are placed in a beaker to be mixed to form a mixed solution, the mixed solution is vibrated by ultrasonic waves for 4 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed solution is stirred to keep the zinc or palladium powder uniformly dispersed. 50 parts by weight of a chloroauric acid solution with a concentration of 0.3mol was added to the mixed solution, and the mixed solution was stirred for 10 minutes, and the stirring was stopped. And standing for 10 minutes, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer to be 1000 revolutions per minute, and stirring for 3 hours to obtain the gold foil. And (3) taking out the gold foil, washing with secondary distilled water, putting into the secondary distilled water after washing, oscillating for 3 seconds by ultrasonic waves, and finally drying by a thermal drying method to finally obtain the gold foil powder.
Example 3: according to the weight portion, 1 portion of zinc or palladium powder with the purity of at least 99.99 percent and the particle size of 600 mu m and 20000 portions of secondary distilled water are placed in a beaker to be mixed to form a mixed solution, the mixed solution is vibrated by ultrasonic waves for 4 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed solution is stirred to keep the zinc or palladium powder uniformly dispersed. Adding 150 parts by weight of chloroauric acid solution with the concentration of 0.4mol into the mixed solution, stirring the mixed solution for 15 minutes, stopping stirring, standing for 48 hours, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer at 1000 revolutions per minute, and stirring for 4 hours to obtain the gold foil. And (3) taking out the gold foil, washing with secondary distilled water, putting into the secondary distilled water after washing, oscillating for 4 seconds by ultrasonic waves, and finally drying by a thermal drying method to finally obtain the gold foil powder.
Example 4: according to the weight portion, 1 portion of zinc or palladium powder with the purity of at least 99.99 percent and the grain diameter of 800 mu m and 30000 portions of secondary distilled water are placed in a beaker to be mixed to form mixed liquid, the mixed liquid is vibrated by ultrasonic waves for 5 minutes until the zinc or palladium powder is uniformly dispersed in the distilled water, and then the mixed liquid is stirred to keep the zinc or palladium powder uniformly dispersed. 630 parts by weight of a chloroauric acid solution with a concentration of 0.5mol was added to the mixed solution, and the mixed solution was stirred for 20 minutes, and the stirring was stopped. And standing for 20 hours, putting a stirrer of a magnetic stirrer into the mixed solution, stirring the mixed solution by using the magnetic stirrer, controlling the rotating speed of the magnetic stirrer at 300 revolutions per minute, and stirring for 5 hours to obtain the gold foil. And taking out the gold foil, washing with secondary distilled water, putting into the secondary distilled water after washing, oscillating for 5 seconds by ultrasonic waves, and finally drying by a thermal drying method to finally obtain the gold foil powder.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A preparation method of an ultrathin gold foil is characterized by comprising the following steps: the steps are as follows,
firstly, putting 1 part of zinc or palladium powder and 500-30000 parts of distilled water into a reaction vessel to be mixed according to parts by weight to form a mixed solution;
secondly, shaking the mixed solution until the zinc or palladium powder is uniformly dispersed in the distilled water, and stirring the mixed solution to keep the zinc or palladium powder uniformly dispersed in the distilled water;
thirdly, adding 4.22 to 630 parts by weight of chloroauric acid solution with the concentration of 0.1 to 0.5mol/L into the mixed solution;
fourthly, stirring the mixed solution for 3 to 20 minutes;
fifthly, standing for 0.08 to 48 hours, stirring the mixed solution by using a magnetic stirrer,
and sixthly, stirring by using a magnetic stirrer, wherein the rotating speed of the magnetic stirrer is controlled to be 300-2000 rpm, and the stirring time is 1-5 hours, so that the gold foil can be obtained.
2. The method of preparing an ultra-thin gold foil as claimed in claim 1, wherein: the distilled water is secondary distilled water.
3. The method of preparing an ultra-thin gold foil as claimed in claim 1, wherein: the reaction vessel is a glass vessel.
4. The method of preparing an ultra-thin gold foil as claimed in claim 1, wherein: the purity of the zinc or palladium powder is at least 99.99%, and the particle size is 200-800 μm.
5. The method for preparing an ultra-thin gold foil as claimed in claim 1, wherein the second step is performed by shaking the mixture with ultrasonic waves for 3-5 minutes.
6. The method of preparing an ultra-thin gold foil as claimed in claim 1, wherein the gold foil has a thickness of 10nm to 500 μm and a width of 500 μm to 1 cm.
7. A preparation method of gold foil powder is characterized by comprising the following steps: the method of preparing an ultra-thin gold foil according to any one of claims 1 to 6, comprising the steps of,
firstly, taking out the gold foil, washing the gold foil with secondary distilled water, putting the gold foil into the secondary distilled water,
secondly, oscillating for 2-5 seconds by using ultrasonic waves,
and thirdly, drying by using a thermal drying method to obtain the gold foil powder.
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| CN201611139733.9A CN108608003B (en) | 2016-12-12 | 2016-12-12 | Preparation method of ultrathin gold foil sheet and gold foil powder |
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| CN201611139733.9A CN108608003B (en) | 2016-12-12 | 2016-12-12 | Preparation method of ultrathin gold foil sheet and gold foil powder |
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| CN1205948A (en) * | 1997-07-23 | 1999-01-27 | 史庭兆 | Gold foil manufacturing method and equipment |
| CN1714956A (en) * | 2004-06-28 | 2006-01-04 | 金成权 | Method for producing gold foil sheet |
| CN101716685A (en) * | 2009-12-14 | 2010-06-02 | 昆明理工大学 | Method for preparing spherical superfine silver powder by using chemical reduction method |
| CN102172776A (en) * | 2011-01-25 | 2011-09-07 | 西安凯立化工有限公司 | Method for preparing metal palladium powder |
| BR102014003744A2 (en) * | 2014-02-18 | 2015-12-08 | Univ Fed Do Rio Grande Do Sul | manufacturing process of supported catalysts containing monometallic and bimetallic transition metal nanoparticles |
| CN105127448A (en) * | 2015-09-25 | 2015-12-09 | 合肥工业大学 | Room-temperature preparation method for nano silver sheet with ultra-large area |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020189060A1 (en) * | 2001-06-19 | 2002-12-19 | Shang-Wen Tang | Method for fabricating high purity gold foil |
| US7585349B2 (en) * | 2002-12-09 | 2009-09-08 | The University Of Washington | Methods of nanostructure formation and shape selection |
-
2016
- 2016-12-12 CN CN201611139733.9A patent/CN108608003B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1205948A (en) * | 1997-07-23 | 1999-01-27 | 史庭兆 | Gold foil manufacturing method and equipment |
| CN1714956A (en) * | 2004-06-28 | 2006-01-04 | 金成权 | Method for producing gold foil sheet |
| CN101716685A (en) * | 2009-12-14 | 2010-06-02 | 昆明理工大学 | Method for preparing spherical superfine silver powder by using chemical reduction method |
| CN102172776A (en) * | 2011-01-25 | 2011-09-07 | 西安凯立化工有限公司 | Method for preparing metal palladium powder |
| BR102014003744A2 (en) * | 2014-02-18 | 2015-12-08 | Univ Fed Do Rio Grande Do Sul | manufacturing process of supported catalysts containing monometallic and bimetallic transition metal nanoparticles |
| CN105127448A (en) * | 2015-09-25 | 2015-12-09 | 合肥工业大学 | Room-temperature preparation method for nano silver sheet with ultra-large area |
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