CN109745870A - A kind of preparation method of porous metal film - Google Patents
A kind of preparation method of porous metal film Download PDFInfo
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Abstract
A kind of preparation method of porous metal film of the present invention, specifically includes the following steps: weighing binder (3-10) % respectively according to mass percent, dispersing agent 0.45-1%, defoaming agent 0.05-0.3%, remaining is deionized water, the sum of mass percent of the above components is 100%, by weighed binder, dispersing agent, defoaming agent and deionized water mixed dissolution, obtain slurry, by metal powder and the slurry of preparation 1:(0.8-1.5 in mass ratio) it pours into agitator tank, it is uniformly mixed, mixed liquor is made, mixed liquor obtained is sprayed on to the tubular porous metal support surface of rotation using spray gun, it is to be adsorbed completely after unload metal film, metal film is successively dried, after degreasing and sintering processes, obtain porous metal film.The porous metals membranous permeation rate prepared using the method for the present invention is high, membrane uniformity is good, filtering accuracy is high, high yield rate.
Description
Technical field
The invention belongs to filtering material technical fields, and in particular to a kind of preparation method of porous metal film.
Background technique
UF membrane is the high and new separation technology for rapidly developing and realizing in the past 30 years industrialization, in food medicine, energy
Work, nuclear industry, electronics industry and environmental protection industry are widely applied.Corrosion-resistant, resistance to height is proposed to metal polyporous material performance
The requirement such as temperature, high mechanical strength, high filtering precision, especially 0.1-2 μm of filtering accuracy membrane material.Traditional symmetry is metal porous
Material has uniform macropore, it is difficult to guarantee high-precision, the double requirements of high permeability, therefore develop asymmetric porous metals material
Material.Relative to conventional symmetrical porous metal material, have high-precision filtration requirement while having both high permeability performance, is tradition
3-10 times of material presents excellent performance, has broad mass market prospect.
The asymmetric porous metal material research of recent domestic is very active, develops a variety of porous metal material preparation sides
Method, such as centrifugal deposition technology (Chinese patent ZL200910219591), wet coating techniques (United States Patent (USP) US2008/
0081007A1, Chinese patent ZL201310435548.4), casting technology (United States Patent (USP) US6652804B1), spread coating, gradient
Complex technique etc., but at present can industrial-scale production preparation only wet coating techniques and centrifugal deposition technology.Wet process spray
Painting technology is to be supported the mixed liquor uniform deposition of metal powder and slurry and tubular type or board-like porous metals using automatic spray gun
Slurry is adsorbed microchannel using capillary attraction principle by body surface face, and metal powder is under binder effect in porous metals branch
Support body surface forms about 5-300 μm of thickness, 0.1-30 μm of aperture porous metals membrane material.
Current wet coating techniques prepare stability, uniformity and the preferable slurry system of safety first, with metal
Powder pass through after mixing compressed air be delivered to automatic spray gun be evenly arranged with porous metals supporting body surface, it is dry, de-
Asymmetric porous metal film is formed after rouge, sintering.Current wet spray slurry mainly selects organic solvent as slurry system
Main body, using ethyl alcohol or terpinol as solvent, polyvinyl butyral is binder, and volatility is high, boiling point is too low causes to spray
Risk is high in the process, and smell is big, severe operational environment；Surface of organic solvent tension is low, easily forms macropore after spraying film forming and lacks
It falls into, it is necessary to which increasing thicknesses of layers leads to permeability reduction；It agglomerates and is difficult to clean after alcohol system mixed liquor is dry simultaneously, automatic spray gun,
Mixing tank and conveyance conduit cleaning difficulty are big, and operating environment is seriously polluted, endanger operator's respiratory tract serious.
Summary of the invention
The object of the present invention is to provide a kind of preparation methods of porous metal film, solve existing wet spray die-manufacturing method system
The more problem of standby metal film macroscopic void out.
The technical scheme adopted by the invention is that a kind of preparation method of porous metal film, which is characterized in that specifically include
Following steps:
Step 1 weighs following components according to mass percent respectively: binder (3-10) %, dispersing agent 0.45-1%,
Defoaming agent 0.05-0.1%, remaining is deionized water, and the sum of mass percent of the above components is 100%；
Weighed binder, dispersing agent, defoaming agent and deionized water mixed dissolution are obtained slurry by step 2；
The slurry 1:(0.8-1.5 in mass ratio of metal powder and step 2 preparation) is poured into agitator tank, is mixed by step 3
It closes uniformly, mixed liquor is made；
Mixed liquor made from step 3 is sprayed on the tubular porous metal support table of rotation using spray gun by step 4
Face, it is to be adsorbed completely after unload metal film；
Step 5 is successively dried, after degreasing and sintering processes the metal film of step 4, obtains porous metals
Film.
Technical characteristic of the invention also resides in,
Wherein, metal powder is stainless steel powder, nickel powder, titanium valve, copper powder, ferroaluminium powder or titanium-aluminium alloy powder.
The average particle size of metal powder is 100 μm of 200nm-.
In step 4, for the spray gun used for automatic spray gun, spray gun walking speed is 1.5-4mm/s, and spray gun load is 3-20ml/
S, atomizing pressure 15-100kpa.
In step 4, the rotation speed of tubular porous metal support is 45-80rad/min.
In step 5, the detailed process of degreasing are as follows: be warming up to 200 DEG C with 5 DEG C/min, then degreasing is warming up to 2 DEG C/min
Temperature carries out degreasing, and skimming temp is 300-550 DEG C, degreasing time 60-120min, and degreasing is in argon gas, hydrogen or vacuum gas
It is carried out under the conditions of atmosphere.
In step 5, the detailed process of sintering processes are as follows: it is warming up to sintering temperature with 5 DEG C/min and is sintered, sintering temperature
Degree is 600-1200 DEG C, sintering time 60-180min, and sintering carries out under the conditions of argon gas, hydrogen or vacuum atmosphere.
Tubular porous metal support is metal powder sintered porous material or wire mesh sintered porous material.
Binder is one of polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyethyleneimine or a variety of.
Dispersing agent is one of sodium pyrophosphate, calgon, polyethers F127 or a variety of.
The beneficial effects of the present invention are,
(1) slurry system of the invention uses water system, and water system surface tension is greater than organic solvent, is formed preferably in microchannel
Bridging action, metal powder formed film layer it is more complete, be less prone to defect or white space；
(2) slurry system of the invention using deionized water as solvent, nontoxic, non-stimulated smell after atomization, together
When be not belonging to flammable and combustible liquids, surface tension is suitable, volatile at a temperature of 25-100 DEG C, low in cost；
(3) present invention is using polyacrylamide, polyacrylic acid, polyvinylpyrrolidone or polyethyleneimine as bonding
Agent makes spray gun, mixing tank and conveyance conduit be easy to clear using sodium pyrophosphate, calgon or polyethers F127 as dispersing agent
Wash clean, is cleaned convenient for daily maintenance, and waste water yield is extremely low；
(4) of the invention by wet end furnish, metal powder content, spray gun walking speed, atomizing pressure, mixing pressure tank, tubular porous
All parameter quantizations such as metal support revolving speed, technology stability is high, and yield rate is up to 99.5% or more；
(5) preparation method safety and environmental protection of the present invention, simple process and low cost are suitble to large-scale production；Using the invention
It prepares that porous metals membranous permeation rates is high, membrane uniformity is good, filtering accuracy is high, high yield rate, can be widely applied to water process, doctor
The fields such as the filtering of medicine intermediate, food purification, petrochemical industry, coal chemical industry.
Detailed description of the invention
Fig. 1 is porous metal film surface microscopic topographic photo prepared by the embodiment of the present invention 1；
Fig. 2 is porous metal film surface microscopic topographic photo prepared by the embodiment of the present invention 2；
Fig. 3 is porous metal film surface microscopic topographic photo prepared by the embodiment of the present invention 3；
Fig. 4 is porous metal film surface microscopic topographic photo prepared by the embodiment of the present invention 4.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
A kind of preparation method of porous metal film of the present invention, specifically includes the following steps:
Step 1 weighs following components, binder 3-10%, dispersing agent 0.5-1%, defoaming according to mass percent respectively
Agent 0.05-0.3%, remaining is deionized water, and the sum of mass percent of the above components is 100%；
Weighed binder, dispersing agent, defoaming agent and deionized water mixed dissolution are obtained slurry by step 2；
The slurry 1:(0.8-1.5 in mass ratio of metal powder and step 2 preparation) is poured into agitator tank, is mixed by step 3
It closes uniformly, mixed liquor is made；Agitator tank operating pressure is 0.05MPa-0.3MPa, and metal powder therein is stainless steel powder, nickel
Powder, titanium valve, copper powder, ferroaluminium powder or titanium-aluminium alloy powder, the average particle size of metal powder are 100 μm of 200nm-；
Mixed liquor made from step 3 is sprayed on the tubular porous metal support table of rotation using spray gun by step 4
Face, it is to be adsorbed completely after unload metal film；
For the spray gun used for automatic spray gun, spray gun walking speed is 1.5-4mm/s, and spray gun load is 3-20ml/s, atomization pressure
Power is 15-100kpa；The rotation speed of tubular porous metal support is 45-80rad/min；
Step 5 is successively dried, after degreasing and sintering processes the metal film of step 4, obtains porous metals
Film.
Wherein, drying temperature is 25-60 DEG C, drying time 5h-10h；
The detailed process of degreasing are as follows: be warming up to 200 DEG C with 5 DEG C/min, then skimming temp is warming up to 2 DEG C/min and is taken off
Rouge, skimming temp be 300-550 DEG C, degreasing time 60-120min, degreasing under the conditions of argon gas, hydrogen or vacuum atmosphere into
Row；
The detailed process of sintering processes are as follows: it is warming up to sintering temperature with 5 DEG C/min and is sintered, sintering temperature 600-
1200 DEG C, sintering time 60-180min, sintering carries out under the conditions of argon gas, hydrogen or vacuum atmosphere.
Wherein, tubular porous metal support be metal powder sintered porous material or wire mesh sintered porous material,
The aperture of tubular porous metal support is 0.1-30 μm, and the diameter of tubular porous metal support is 10-90mm, and length is
500-3000mm。
Binder is one of polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyethyleneimine or a variety of.
Dispersing agent is one of sodium pyrophosphate, calgon, polyethers F127 or a variety of.
Embodiment 1
A kind of preparation method of porous stainless steel membrane, specifically includes the following steps:
Step 1 weighs following components, 3g polyvinylpyrrolidone, 0.75g hexa metaphosphoric acid according to mass percent respectively
Sodium, 0.25g defoaming agent and 96g deionized water；
The weighed polyvinylpyrrolidone of step 1, calgon and defoaming agent are dissolved in deionized water by step 2,
It stirs at low speed, is completely dissolved to polyvinylpyrrolidone, calgon and defoaming agent, obtains slurry；
Step 3 pours into 100g slurry prepared by step 2 in agitator tank, and weighing 100g average particle size is 1.25 μm
316LSS stainless steel spherical powder is added agitator tank and obtains mixed liquor after high-speed stirred disperses 15min, be forced into agitator tank
Agitator tank internal pressure is 0.1MPa；
Step 4, the tubular porous metal using automatic spray gun by the mixed liquor even application in agitator tank in rotation support
Body surface face, it is to be adsorbed completely after from tubular porous metal support surface unload metal film；The load of automatic spray gun is 10ml/
S, spray gun walking speed are 3mm/s, and atomizing pressure 50kpa, the rotation speed of tubular porous metal support is 75rad/min, should
The average pore size of tubular porous metal support is 7 μm, diameter 20mm, length 500mm；
The metal film of step 4 is first dried in step 5, and drying temperature is 45 DEG C, drying time 5h；Again to gold
Belong to film and carry out degreasing, metal film is fitted into debinding furnace, furnace temperature is risen to 200 DEG C from room temperature with 5 DEG C/min, then by furnace temperature with 2
DEG C/min is warming up to 550 DEG C, heat preservation 120min completes degreasing, and degreasing carries out under the conditions of argon gas, hydrogen or vacuum atmosphere；Degreasing
Metal film is sintered after the completion, furnace temperature is warming up to 720 DEG C with 5 DEG C/min, sintering is completed after keeping the temperature 120min, then makes
Metal film naturally cools to 50 DEG C and comes out of the stove, and obtains asymmetric stainless steel porous metal film.
Asymmetric stainless steel porous metal film prepared by the present embodiment 1 is observed using scanning electron microscope, it can
Know that the film is porous structure, and even aperture distribution (see Fig. 1).According to standard GB/T/T5249-1985 " permeable sintered gold
The maximum diameter of hole that the measurement of category material, bubble sample aperture " determines the stainless steel porous metal film is 1.15 μm, average pore size
It is 0.51 μm, relative permeability 12m3/m2.h.kpa。
Embodiment 2
A kind of preparation method of porous stainless steel membrane, specifically includes the following steps:
Step 1 weighs following components, 5.7g polyvinylpyrrolidone, 1g hexa metaphosphoric acid according to mass percent respectively
Sodium, 0.3g defoaming agent and 93g deionized water；
The weighed polyvinylpyrrolidone of step 1, calgon and defoaming agent are dissolved in deionized water by step 2,
It stirs at low speed, is completely dissolved to polyvinylpyrrolidone, calgon and defoaming agent, obtains slurry；
Step 3 pours into 100g slurry prepared by step 2 in agitator tank, and weighing 120g average particle size is 2.5 μm
316LSS stainless steel spherical powder is added agitator tank and obtains mixed liquor after high-speed stirred disperses 15min, be forced into agitator tank
Agitator tank internal pressure is 0.1MPa；
Step 4, the tubular porous metal using automatic spray gun by the mixed liquor even application in agitator tank in rotation support
Body surface face, it is to be adsorbed completely after from tubular porous metal support surface unload metal film；The load of automatic spray gun is 8ml/
S, spray gun walking speed are 3mm/s, and atomizing pressure 50kpa, the rotation speed of tubular porous metal support is 75rad/min, should
The average pore size of tubular porous metal support is 10 μm, diameter 60mm, length 800mm；
The metal film of step 4 is first dried in step 5, and drying temperature is 50 DEG C, drying time 3h；Again to gold
Belong to film and carry out degreasing, metal film is fitted into debinding furnace, furnace temperature is risen to 200 DEG C from room temperature with 5 DEG C/min, then by furnace temperature with 2
DEG C/min is warming up to 550 DEG C, heat preservation 120min completes degreasing, and degreasing carries out under the conditions of argon gas, hydrogen or vacuum atmosphere；Degreasing
Metal film is sintered after the completion, furnace temperature is warming up to 800 DEG C with 5 DEG C/min, sintering is completed after keeping the temperature 120min, then makes
Metal film naturally cools to 50 DEG C and comes out of the stove, and obtains asymmetric stainless steel porous metal film.
Asymmetric stainless steel porous metal film prepared by the present embodiment 2 is observed using scanning electron microscope, it can
Know that the film is porous structure, and even aperture distribution (see Fig. 2).According to standard GB/T/T5249-1985 " permeable sintered gold
The maximum diameter of hole that the measurement of category material, bubble sample aperture " determines the stainless steel porous metal film is 3.11 μm, average pore size
It is 0.95 μm, relative permeability 26m3/m2.h.kpa。
Embodiment 3
A kind of preparation method of porous stainless steel membrane, specifically includes the following steps:
Step 1 weighs following components according to mass percent respectively, 7g polyvinylpyrrolidone, 1g calgon,
0.25g defoaming agent and 94g deionized water；
The weighed polyvinylpyrrolidone of step 1, calgon and defoaming agent are dissolved in deionized water by step 2,
It stirs at low speed, is completely dissolved to polyvinylpyrrolidone, calgon and defoaming agent, obtains slurry；
Step 3 pours into slurry prepared by step 2 in agitator tank, weighs the 316LSS that 150g average particle size is 6 μm not
The steel ball shape powder that becomes rusty is added agitator tank and obtains mixed liquor after high-speed stirred disperses 15min, be forced into agitator tank to agitator tank
Pressure is 0.1MPa；
Step 4, the tubular porous metal using automatic spray gun by the mixed liquor even application in agitator tank in rotation support
Body surface face, it is to be adsorbed completely after from tubular porous metal support surface unload metal film；The load of automatic spray gun is 5ml/
S, spray gun walking speed are 3mm/s, and atomizing pressure 50kpa, the rotation speed of tubular porous metal support is 75rad/min, should
The average pore size of tubular porous metal support is 20 μm, diameter 80mm, length 1000mm；
The metal film of step 4 is first dried in step 5, and drying temperature is 50 DEG C, drying time 3h；Again to gold
Belong to film and carry out degreasing, metal film is fitted into debinding furnace, furnace temperature is risen to 200 DEG C from room temperature with 5 DEG C/min, then by furnace temperature with 2
DEG C/min is warming up to 550 DEG C, heat preservation 120min completes degreasing, and degreasing carries out under the conditions of argon gas, hydrogen or vacuum atmosphere；Degreasing
Metal film is sintered after the completion, furnace temperature is warming up to 980 DEG C with 5 DEG C/min, sintering is completed after keeping the temperature 160min, then makes
Metal film naturally cools to 50 DEG C and comes out of the stove, and obtains asymmetric stainless steel porous metal film.
Asymmetric stainless steel porous metal film prepared by the present embodiment 3 is observed using scanning electron microscope, it can
Know that the film is porous structure, and even aperture distribution (see Fig. 3).According to standard GB/T/T5249-1985 " permeable sintered gold
The maximum diameter of hole that the measurement of category material, bubble sample aperture " determines the stainless steel porous metal film is 5.30 μm, average pore size
It is 1.95 μm, relative permeability 55m3/m2.h.kpa。
Embodiment 4
A kind of preparation method of porous stainless steel membrane, specifically includes the following steps:
Step 1 weighs following components according to mass percent respectively, 10g polyethyleneimine, 0.8g sodium pyrophosphate,
0.25g defoaming agent and 90g deionized water；
The weighed polyvinylpyrrolidone of step 1, calgon and defoaming agent are dissolved in deionized water by step 2,
It stirs at low speed, is completely dissolved to polyvinylpyrrolidone, calgon and defoaming agent, obtains slurry；
Step 3 pours into slurry prepared by step 2 in agitator tank, weighs the anatase titanium dioxide that 90g average particle size is 0.2 μm
TiO2Powder is added agitator tank and obtains mixed liquor, being forced into agitator tank internal pressure to agitator tank is after high-speed stirred disperses 15min
0.1MPa；
Step 4, the tubular porous metal using automatic spray gun by the mixed liquor even application in agitator tank in rotation support
Body surface face, it is to be adsorbed completely after from tubular porous metal support surface unload metal film；The load of automatic spray gun is 5ml/
S, spray gun walking speed are 2mm/s, and atomizing pressure 80kpa, the rotation speed of tubular porous metal support is 75rad/min, should
The average pore size of tubular porous metal support is 3 μm, diameter 60mm, length 1200mm；
The metal film of step 4 is first dried in step 5, and drying temperature is 50 DEG C, drying time 3h；Again to gold
Belong to film and carry out degreasing, metal film is fitted into debinding furnace, furnace temperature is risen to 200 DEG C from room temperature with 5 DEG C/min, then by furnace temperature with 2
DEG C/min is warming up to 550 DEG C, heat preservation 120min completes degreasing, and degreasing carries out under the conditions of argon gas, hydrogen or vacuum atmosphere；Degreasing
Metal film is sintered after the completion, furnace temperature is warming up to 1000 DEG C with 5 DEG C/min, completes sintering after keeping the temperature 120min, then
Make metal film naturally cool to 50 DEG C to come out of the stove, obtains asymmetric stainless steel porous metal film.
Asymmetric stainless steel porous metal film prepared by the present embodiment 4 is observed using scanning electron microscope, it can
Know that the film is porous structure, and even aperture distribution (see Fig. 4).According to standard GB/T/T5249-1985 " permeable sintered gold
The maximum diameter of hole that the measurement of category material, bubble sample aperture " determines the stainless steel porous metal film is 0.3 μm, average pore size
It is 0.095 μm, relative permeability 5m3/m2.h.kpa。
Embodiment 5
A kind of preparation method of porous stainless steel membrane, specifically includes the following steps:
Step 1 weighs following components, 6g polyvinylpyrrolidone, 0.5g hexa metaphosphoric acid according to mass percent respectively
Sodium, 0.08g defoaming agent and 93g deionized water；
The weighed polyvinylpyrrolidone of step 1, calgon and defoaming agent are dissolved in deionized water by step 2,
It stirs at low speed, is completely dissolved to polyvinylpyrrolidone, calgon and defoaming agent, obtains slurry；
Step 3 pours into slurry prepared by step 2 in agitator tank, weighs the copper powder that 110g average particle size is 8 μm and is added
Agitator tank obtains mixed liquor after high-speed stirred disperses 25min, and being forced into agitator tank internal pressure to agitator tank is 0.1MPa；
Step 4, the tubular porous metal using automatic spray gun by the mixed liquor even application in agitator tank in rotation support
Body surface face, it is to be adsorbed completely after from tubular porous metal support surface unload metal film；The load of automatic spray gun is 8ml/
S, spray gun walking speed are 3mm/s, and atomizing pressure 50kpa, the rotation speed of tubular porous metal support is 75rad/min, should
10 μm, diameter 60mm, length 800mm of the aperture of tubular porous metal support；
The metal film of step 4 is first dried in step 5, and drying temperature is 50 DEG C, drying time 3h；Again to gold
Belong to film and carry out degreasing, metal film is fitted into debinding furnace, furnace temperature is risen to 200 DEG C from room temperature with 5 DEG C/min, then by furnace temperature with 2
DEG C/min is warming up to 550 DEG C, heat preservation 120min completes degreasing, and degreasing carries out under the conditions of argon gas, hydrogen or vacuum atmosphere；Degreasing
Metal film is sintered after the completion, furnace temperature is warming up to 800 DEG C with 5 DEG C/min, sintering is completed after keeping the temperature 120min, then makes
Metal film naturally cools to 50 DEG C and comes out of the stove, and obtains asymmetric stainless steel porous metal film.
Asymmetric stainless steel porous metal film prepared by the present embodiment 5 is observed using scanning electron microscope, it can
Know that the film is porous structure, and even aperture distribution.Foundation standard GB/T/T5249-1985 " permeable sintered metal materials,
The maximum diameter of hole that the measurement in bubble sample aperture " determines the stainless steel porous metal film is 5.11 μm, and average pore size is 1.8 μ
M, relative permeability 50m3/m2.h.kpa。
Claims (10)
1. a kind of preparation method of porous metal film, which is characterized in that specifically includes the following steps:
Step 1 weighs following components according to mass percent respectively: binder (3-10) %, dispersing agent 0.45-1%, defoaming
Agent 0.05-0.3%, remaining is deionized water, and the sum of mass percent of the above components is 100%；
Weighed binder, dispersing agent, defoaming agent and deionized water mixed dissolution are obtained slurry by step 2；
Step 3 pours into the slurry 1:(0.8-1.5 in mass ratio of metal powder and step 2 preparation) in agitator tank, and mixing is equal
It is even, mixed liquor is made；
Mixed liquor made from step 3 is sprayed on the tubular porous metal support surface of rotation using spray gun by step 4, to
Metal film is unloaded after absorption completely；
Step 5 is successively dried, after degreasing and sintering processes the metal film of step 4, obtains porous metal film.
2. a kind of preparation method of porous metal film according to claim 1, which is characterized in that the metal powder is not
Become rusty comminuted steel shot, nickel powder, titanium valve, copper powder, ferroaluminium powder or titanium-aluminium alloy powder.
3. a kind of preparation method of porous metal film according to claim 2, which is characterized in that the metal powder is put down
Equal granularity is 100 μm of 200nm-.
4. a kind of preparation method of porous metal film according to claim 1, which is characterized in that in the step 4, adopt
Spray gun is automatic spray gun, and the spray gun walking speed is 1.5-4mm/s, and spray gun load is 3-20ml/s, atomizing pressure 15-
100kpa。
5. a kind of preparation method of porous metal film according to claim 1, which is characterized in that in the step 4, pipe
The rotation speed of formula porous metals supporter is 45-80rad/min.
6. a kind of preparation method of porous metal film according to claim 1, which is characterized in that in the step 5, take off
The detailed process of rouge are as follows: be warming up to 200 DEG C with 5 DEG C/min, then skimming temp is warming up to 2 DEG C/min and carries out degreasing, degreasing temperature
Degree is 300-550 DEG C, degreasing time 60-120min, and degreasing carries out under the conditions of argon gas, hydrogen or vacuum atmosphere.
7. a kind of preparation method of porous metal film according to claim 1 or 6, which is characterized in that in the step 5,
The detailed process of sintering processes are as follows: be warming up to sintering temperature with 5 DEG C/min and be sintered, sintering temperature is 600-1200 DEG C, is burnt
The knot time is 60-180min, and sintering carries out under the conditions of argon gas, hydrogen or vacuum atmosphere.
8. a kind of preparation method of porous metal film according to claim 1, which is characterized in that the tubular porous metal
Supporter is metal powder sintered porous material or wire mesh sintered porous material.
9. a kind of preparation method of porous metal film according to claim 1, which is characterized in that the binder is poly- third
One of acrylamide, polyacrylic acid, polyvinylpyrrolidone, polyethyleneimine are a variety of.
10. a kind of preparation method of porous metal film according to claim 1, which is characterized in that the dispersing agent is coke
One of sodium phosphate, calgon, polyethers F127 or a variety of.
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| CN107297151A (en) * | 2017-08-15 | 2017-10-27 | 西北有色金属研究院 | A kind of preparation method of the compound porous membrane tube of ceramet |
| CN110354694A (en) * | 2019-08-16 | 2019-10-22 | 广州赛隆增材制造有限责任公司 | A kind of activated sintering preparation method of metal composite porous membrane tube |
| CN110640145A (en) * | 2019-09-25 | 2020-01-03 | 西安欧中材料科技有限公司 | Preparation method of nickel-based alloy thin-wall circular tube |
| CN111636064A (en) * | 2020-06-16 | 2020-09-08 | 西安石油大学 | Preparation method of Fe-Al intermetallic compound porous material |
| CN112170845A (en) * | 2020-09-28 | 2021-01-05 | 西部宝德科技股份有限公司 | Degreasing method for powder porous metal film |
| CN112620625A (en) * | 2020-11-24 | 2021-04-09 | 西部宝德科技股份有限公司 | Method for coating porous metal surface with film |
| CN113171690A (en) * | 2021-04-09 | 2021-07-27 | 西部宝德科技股份有限公司 | Preparation method of disk-type porous metal film |
| CN116196771A (en) * | 2023-04-28 | 2023-06-02 | 成都华之煜新材料有限公司 | Preparation method of asymmetric porous metal film with high porosity |
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| CN112170845B (en) * | 2020-09-28 | 2022-09-20 | 西部宝德科技股份有限公司 | Degreasing method for powder porous metal film |
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