CN105499597A - Preparation method for micron silver powder for silver clay, and preparation method for silver clay product - Google Patents
Preparation method for micron silver powder for silver clay, and preparation method for silver clay product Download PDFInfo
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- CN105499597A CN105499597A CN201510906616.XA CN201510906616A CN105499597A CN 105499597 A CN105499597 A CN 105499597A CN 201510906616 A CN201510906616 A CN 201510906616A CN 105499597 A CN105499597 A CN 105499597A
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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
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
Abstract
The invention relates to a preparation method for micron silver powder for silver clay, and a preparation method for a silver clay product. Through the preparation method for the micron silver powder for silver clay, the granular silver powder with a grain size of 0.4-1[mu]m and high dispersibility can be obtained. Through the preparation method for the silver clay product, the silver product can be obtained through proportioning, silver clay preparation, forming, drying, sintering and polishing. The preparation methods disclosed by the invention have the following advantages: 1. the prepared silver powder has a grain size of 0.4-1[mu]m, uniform grain size distribution and high dispersibility, and the prepared silver product has a compact metal structure and a high hardness; 2. the silver clay has no water, lowering of viscosity and plasticity due to water volatilization is avoided, and abundant time is ensured for kneading; and 3. a thermosetting curing agent is added in the silver clay, and heating is carried out during the kneading process, so that the silver clay has high plasticity and improved formability.
Description
Technical field
The present invention relates to the preparation method of a kind of silver clay micro-silver powder and these silver clay goods
Background technology
In general, silver clay is by silver powder superfine for granularity, and mixing water, organic binder bond etc. carry out shaping, fashions into the various shapes that people like.Then carry out that surface moisture dries up, sinters, polishing, produce the silverware with given shape.Silver clay moulding is got up very easily and is not had toxicity, and after Fast Sintering, organic matter can burn completely thus form the fine silver of 99.99%, made finished product texture and conventional silver goods, almost indifference.
In present silver clay technology of preparing, purity containing particle size 3 ~ 20 μm is 99.9 quality % or above high-purity silver powder 55 ~ 95 quality %, cellulose water-soluble binder 0.6 ~ 8 quality %, grease 0.2 ~ 3 quality %, surfactant 0.02 ~ 3 quality %, and all the other are water.
The silver clay silver powder particle diameter used of prior art is comparatively large, and after causing sinter molding, silverware internal void is many and large, and metal interior structures is not fine and close, thus the hardness of silverware and toughness poor.Develop the method much preparing silver clay micro-silver powder in the market, some in them even may have obvious advantage on the micro-silver powder of some special appearance of preparation, but most of method technics comparing is complicated, to consersion unit requirement is higher and energy ezpenditure large, the accessory substance of generation is also more.
The silver clay of prior art when kneading is shaping, plasticity and viscosity poor, make the ornaments difficulty of complicated shape large.And moisture evaporation is very fast in kneading process, the viscosity of silver clay, plasticity are sharply deteriorated along with water loss, and kneading process must carefully complete fast.
Summary of the invention
For the problems referred to above, the object of this invention is to provide the preparation method of a kind of silver clay micro-silver powder and these silver clay goods, the change of kneading process medium viscosity is little, and plasticity is good, compact structure, good mechanical properties after sintering.
To achieve these goals, the present invention selects following technical scheme: a kind of preparation method of silver clay micro-silver powder, pulp furnish is: 70 ~ 80 quality % liquor argenti nitratis ophthalmicuses, 1 ~ 3 quality % polyethylene of dispersing agent alcohol, 2 ~ 4 quality % emulsifying agent triethanolamines, 8 ~ 13 quality % reducing agent glycerine, 6 ~ 10 quality % activator NaOH, comprise the following steps:
1., preparation 70 ~ 80 quality %, molar concentration are the liquor argenti nitratis ophthalmicus of 0.8 ~ 1.2mol/L;
2., weigh the polyethylene of dispersing agent alcohol of 1 ~ 3 quality %, add in liquor argenti nitratis ophthalmicus, under 80 ~ 120 DEG C of low-temperature heat conditions, stir with glass bar, accelerate the dissolving of polyvinyl alcohol;
3., with pipette measuring 2 ~ 4 quality % emulsifying agent triethanolamines joins in the solution after dilution, stirs and makes solution fully emulsified, and color becomes muddy;
4., in the solution after emulsification, add 8 ~ 13 quality % reducing agent glycerine, stir, join in reaction unit;
5., take 6 ~ 10 quality % activator NaOH, be mixed with sodium hydroxide solution, join in reaction unit;
6., by sodium hydroxide solution with the speed of 2 ~ 5mL/min instill in the mixed liquor of glycerine and silver nitrate, regulate mixing speed, make reacting balance carry out 30 ~ 60 minutes;
7. deionized water is spent after, having reacted 5 ~ 6 times;
8., finally with absolute ethyl alcohol dehydration, air-dry, namely obtain required micro-silver powder.
A preparation method for silver clay goods, is made up of micro-silver powder, epoxy resin, triethanolamine and paraffin, and by mass, wherein each constituent content is as follows:
Micro-silver powder 75 ~ 90 quality %, epoxy resin 3 ~ 10 quality %, triethanolamine 1 ~ 3 quality %, paraffin 5 ~ 12 quality %;
Comprise the following steps:
1., by epoxy resin and triethanolamine heat in beaker, make it be dissolved as transparence liquid, cool under room temperature, as the binding agent of silver clay;
2., by the micro-silver powder of preparation and binding agent fully stir, mix and obtain silver clay;
3., the silver clay that mixes is shaping according to various shape kneading, and add paraffin in kneading process, contributing to silver clay increases plasticity, tack-free, do not fall slag;
4., kneading shaping after, blow 20 ~ 40 minutes with hot hair dryer, finally carry out sintering, polishing, obtained silver clay goods.
The present invention takes above technical scheme, has the following advantages:
1, the silver powder granularity prepared of the present invention is between 0.4 ~ 1 μm, even particle size distribution, favorable dispersibility, and obtained silverware metal structure is fine and close, and hardness is good;
2, silver clay of the present invention is not containing moisture, can not be deteriorated, plasticity decline because of the volatilization viscosity of moisture, has ample time and carries out kneading;
3, add heat curing-type curing agent in silver clay of the present invention, heat in kneading process, silver clay plasticity can be made good, and mouldability improves.
Accompanying drawing explanation
Fig. 1 is the grain size distribution of silver clay micro-silver powder in the present invention.
Fig. 2 is the process flow diagram preparing silverware in the present invention.
Detailed description of the invention
Embodiment 1
Getting 90mL molar concentration is that the liquor argenti nitratis ophthalmicus of 0.9mol/L is poured in 250mL beaker;
Weigh 2g polyethylene of dispersing agent alcohol, add in liquor argenti nitratis ophthalmicus, under 80 DEG C of low-temperature heat conditions, stir with glass bar, accelerate the dissolving of polyvinyl alcohol;
Measuring 2.5mL emulsifying agent triethanolamine with pipette joins in the solution after dilution, stirs and makes solution fully emulsified, and color becomes muddy;
In the solution after emulsification, add 10mL reducing agent glycerine, stir, join in reaction unit;
Take 8g activator NaOH, be mixed with the solution that mass concentration is 0.13g/mL, join in reaction unit;
Sodium hydroxide solution is instilled with the speed of 3mL/min in the mixed liquor of glycerine and silver nitrate, regulates mixing speed to 75 rev/min, make reacting balance carry out 30 minutes;
Deionized water is spent 5 ~ 6 times after having reacted;
With absolute ethyl alcohol dehydration, air-dry, namely obtain the micro-silver powder prepared needed for silver clay.
Obtained silver powder characterizes granularity by Malvern Mastersizer laser particle analyzer, and test result as shown in Figure 1.D10, D50, D90 indicate that the silver powder particle diameter of 10%, 50%, 90% is less than 0.485 μm, 0.603 μm and 0.846 μm respectively, and most silver powder granularity is within the scope of 1 μm.And silver powder particle diameter is normal distribution, even particle size distribution, is less likely to occur to reunite.The processability requirement of silver clay can be met.
Get 0.9mL epoxy resin and 0.2ml triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take micro-silver powder prepared by 10g, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 30 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 500 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silver clay goods.
Embodiment 2
Get 0.9mL epoxy resin and 0.2ml triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take micro-silver powder prepared by 10g embodiment 1, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 30 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 600 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silver clay goods.
Embodiment 3
Get 0.9mL epoxy resin and 0.2ml triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take silver powder prepared by 10g embodiment 1, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 30 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 700 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silverware.
Embodiment 4
Get 0.9mL epoxy resin and 0.2ml triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take silver powder prepared by 10g embodiment 1, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 30 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 800 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silverware.
Embodiment 5
Get 0.9mL epoxy resin and 0.2ml triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take silver powder prepared by 10g embodiment 1, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 30 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 900 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silverware.
Carry out to above-described embodiment gained silverware the volume, the weight contrast that sinter front and back, can obtain its shrinkage factor, measurement result is as shown in the table;
Learn from above-mentioned example, embodiment 4,5 shrinkage factor diminishes, because silverware deforms when 800,900 DEG C of sintering, causes measured value inaccurate.And the shrinkage factor change of embodiment 1,2 is little, the silverware internal void after sintering is more, and density is less, easily bends, and hardness is little.Embodiment 3 sintering temperature is 700 DEG C, the silverware compact structure after sintering, good mechanical properties.
Embodiment 6
Getting 60mL molar concentration is that the liquor argenti nitratis ophthalmicus of 1mol/L is poured in 250mL beaker;
Weigh 1g polyethylene of dispersing agent alcohol, add in liquor argenti nitratis ophthalmicus, under 90 DEG C of low-temperature heat conditions, stir with glass bar, accelerate the dissolving of polyvinyl alcohol;
Measuring 2mL emulsifying agent triethanolamine with pipette joins in the solution after dilution, stirs and makes solution fully emulsified, and color becomes muddy;
In the solution after emulsification, add 8mL reducing agent glycerine, stir, join in reaction unit;
Take 6g activator NaOH, be mixed with the solution that mass concentration is 0.13g/mL, join in reaction unit;
Sodium hydroxide solution is instilled with the speed of 2mL/min in the mixed liquor of glycerine and silver nitrate, regulates mixing speed to 75 rev/min, make reacting balance carry out 40 minutes;
Deionized water is spent 5 ~ 6 times after having reacted;
With absolute ethyl alcohol dehydration, air-dry, namely obtain the micro-silver powder prepared needed for silver clay.
Get 0.7mL epoxy resin and 0.1mL triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take micro-silver powder prepared by 8g such scheme, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 0.5mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 30 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 500 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silverware.
Embodiment 7
Getting 65mL molar concentration is that the liquor argenti nitratis ophthalmicus of 1mol/L is poured in 250mL beaker;
Weigh 1.5g polyethylene of dispersing agent alcohol, add in liquor argenti nitratis ophthalmicus, under 90 DEG C of low-temperature heat conditions, stir with glass bar, accelerate the dissolving of polyvinyl alcohol;
Measuring 2.5mL emulsifying agent triethanolamine with pipette joins in the solution after dilution, stirs and makes solution fully emulsified, and color becomes muddy;
In the solution after emulsification, add 9mL reducing agent glycerine, stir, join in reaction unit;
Take 7g activator NaOH, be mixed with the solution that mass concentration is 0.13g/mL, join in reaction unit;
Sodium hydroxide solution is instilled with the speed of 2mL/min in the mixed liquor of glycerine and silver nitrate, regulates mixing speed to 75 rev/min, make reacting balance carry out 40 minutes;
Deionized water is spent 5 ~ 6 times after having reacted;
With absolute ethyl alcohol dehydration, air-dry, namely obtain the micro-silver powder prepared needed for silver clay.
Get 0.8mL epoxy resin and 0.2mL triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take the micro-silver powder of the above-mentioned preparation of 9g, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 30 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 600 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silverware.
Embodiment 8
Getting 70mL molar concentration is that the liquor argenti nitratis ophthalmicus of 1mol/L is poured in 250mL beaker;
Weigh 2g polyethylene of dispersing agent alcohol, add in liquor argenti nitratis ophthalmicus, under 100 DEG C of low-temperature heat conditions, stir with glass bar, accelerate the dissolving of polyvinyl alcohol;
Measuring 3mL emulsifying agent triethanolamine with pipette joins in the solution after dilution, stirs and makes solution fully emulsified, and color becomes muddy;
In the solution after emulsification, add 10mL reducing agent glycerine, stir, join in reaction unit;
Take 8g activator NaOH, be mixed with the solution that mass concentration is 0.13g/mL, join in reaction unit;
Sodium hydroxide solution is instilled with the speed of 3mL/min in the mixed liquor of glycerine and silver nitrate, regulates mixing speed to 75 rev/min, make reacting balance carry out 50 minutes;
Deionized water is spent 5 ~ 6 times after having reacted;
With absolute ethyl alcohol dehydration, air-dry, namely obtain the micro-silver powder prepared needed for silver clay.
Get 0.9mL epoxy resin and 0.3mL triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take the micro-silver powder of the above-mentioned preparation of 10g, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1.5mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 40 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 700 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silverware.
Embodiment 9
Getting 75mL molar concentration is that the liquor argenti nitratis ophthalmicus of 1mol/L is poured in 250mL beaker;
Weigh 2.5g polyethylene of dispersing agent alcohol, add in liquor argenti nitratis ophthalmicus, under 100 DEG C of low-temperature heat conditions, stir with glass bar, accelerate the dissolving of polyvinyl alcohol;
Measuring 3.5mL emulsifying agent triethanolamine with pipette joins in the solution after dilution, stirs and makes solution fully emulsified, and color becomes muddy;
In the solution after emulsification, add 11mL reducing agent glycerine, stir, join in reaction unit;
Take 9g activator NaOH, be mixed with the solution that mass concentration is 0.13g/mL, join in reaction unit;
Sodium hydroxide solution is instilled with the speed of 3mL/min in the mixed liquor of glycerine and silver nitrate, regulates mixing speed to 75 rev/min, make reacting balance carry out 50 minutes;
Deionized water is spent 5 ~ 6 times after having reacted;
With absolute ethyl alcohol dehydration, air-dry, namely obtain the micro-silver powder prepared needed for silver clay.
Get 1mL epoxy resin and 0.4mL triethanolamine, mix in beaker, heating one hour on the warm table being placed on 180 DEG C, makes it completely molten and is transparence liquid, at room temperature cools, as the binding agent of silver clay;
Take the micro-silver powder of the above-mentioned preparation of 11g, join in the beaker of binding agent, stir and namely obtain silver clay;
Silver clay is placed on kneading on clean glass plate shaping, in kneading process, progressively adds 1.5mL paraffin;
Shaping silver clay hair-dryer hot blast is blown and within 40 minutes, obtains blank;
Blank is put into Muffle furnace, controls the heating schedule of Muffle furnace, in 100 minutes, make furnace temperature at the uniform velocity be raised to 800 DEG C from room temperature, be incubated 30 minutes;
Utilize and carefully frustrate the instrument of grade polishing is carried out to the green article that obtains after sintering, namely obtain silverware.
Claims (2)
1. the preparation method of a silver clay micro-silver powder, it is characterized in that: pulp furnish is: 70 ~ 80 quality % liquor argenti nitratis ophthalmicuses, 1 ~ 3 quality % polyethylene of dispersing agent alcohol, 2 ~ 4 quality % emulsifying agent triethanolamines, 8 ~ 13 quality % reducing agent glycerine, 6 ~ 10 quality % activator NaOH, comprise the following steps:
1., preparation 70 ~ 80 quality %, molar concentration are the liquor argenti nitratis ophthalmicus of 0.8 ~ 1.2mol/L;
2., weigh the polyethylene of dispersing agent alcohol of 1 ~ 3 quality %, add in liquor argenti nitratis ophthalmicus, under 80 ~ 120 DEG C of low-temperature heat conditions, stir with glass bar, accelerate the dissolving of polyvinyl alcohol;
3., with pipette measuring 2 ~ 4 quality % emulsifying agent triethanolamines joins in the solution after dilution, stirs and makes solution fully emulsified, and color becomes muddy;
4., in the solution after emulsification, add 8 ~ 13 quality % reducing agent glycerine, stir, join in reaction unit;
5., take 6 ~ 10 quality % activator NaOH, be mixed with sodium hydroxide solution, join in reaction unit;
6., by sodium hydroxide solution with the speed of 2 ~ 5mL/min instill in the mixed liquor of glycerine and silver nitrate, regulate mixing speed, make reacting balance carry out 30 ~ 60 minutes;
7. deionized water is spent after, having reacted 5 ~ 6 times;
8., finally with absolute ethyl alcohol dehydration, air-dry, namely obtain required micro-silver powder.
2. a preparation method for silver clay goods, is made up of micro-silver powder, epoxy resin, triethanolamine and paraffin, and by mass, wherein each constituent content is as follows:
Micro-silver powder 75 ~ 90 quality %, epoxy resin 3 ~ 10 quality %, triethanolamine 1 ~ 3 quality %, paraffin 5 ~ 12 quality %;
It is characterized in that: comprise the following steps:
1., by epoxy resin and triethanolamine heat in beaker, make it be dissolved as transparence liquid, cool under room temperature, as the binding agent of silver clay;
2., by the micro-silver powder of preparation and binding agent fully stir, mix and obtain silver clay;
3., the silver clay that mixes is shaping according to various shape kneading, and add paraffin in kneading process, contributing to silver clay increases plasticity, tack-free, do not fall slag;
4., kneading shaping after, blow 20 ~ 40 minutes with hot hair dryer, finally carry out sintering, polishing, obtained silver clay goods.
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| CN107052327A (en) * | 2017-04-06 | 2017-08-18 | 广州市尤特新材料有限公司 | A kind of silver-colored clay silver powder and the silver-colored clay comprising the silver powder |
| CN107259726A (en) * | 2017-07-14 | 2017-10-20 | 中国地质大学（武汉） | A kind of fixed-type method of metal dust |
| CN108284219A (en) * | 2017-08-15 | 2018-07-17 | 李昕 | Stainless steel mixed-powder contains the powder stainless steel clay and the Clay Consolidation technique |
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| CN107259726B (en) * | 2017-07-14 | 2018-12-18 | 中国地质大学（武汉） | A method of the metal powder for jewellery is fixed-type |
| CN108284219A (en) * | 2017-08-15 | 2018-07-17 | 李昕 | Stainless steel mixed-powder contains the powder stainless steel clay and the Clay Consolidation technique |
| CN108284219B (en) * | 2017-08-15 | 2019-10-08 | 长沙墨科瑞网络科技有限公司 | Stainless steel mixed-powder contains the powder stainless steel clay and the Clay Consolidation technique |
| CN112357984A (en) * | 2020-10-26 | 2021-02-12 | 杭州电子科技大学 | Silver-doped clay particle, preparation method thereof and biological sand filtering system |
| CN112357984B (en) * | 2020-10-26 | 2023-09-01 | 杭州电子科技大学 | Silver-doped clay particles, preparation method thereof and biological sand filtering system |
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