CN107541936A - A kind of high-temperature-resistant and anti-corrosion coating metal fibrofelt and preparation method thereof - Google Patents
A kind of high-temperature-resistant and anti-corrosion coating metal fibrofelt and preparation method thereof Download PDFInfo
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- CN107541936A CN107541936A CN201710701280.2A CN201710701280A CN107541936A CN 107541936 A CN107541936 A CN 107541936A CN 201710701280 A CN201710701280 A CN 201710701280A CN 107541936 A CN107541936 A CN 107541936A
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- 239000002184 metal Substances 0.000 title claims abstract description 84
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 84
- 238000000576 coating method Methods 0.000 title claims abstract description 83
- 239000011248 coating agent Substances 0.000 title claims abstract description 81
- 238000005260 corrosion Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 77
- 239000002245 particle Substances 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 239000006185 dispersion Substances 0.000 claims abstract description 59
- 239000002105 nanoparticle Substances 0.000 claims abstract description 54
- 239000004793 Polystyrene Substances 0.000 claims abstract description 53
- 229920002223 polystyrene Polymers 0.000 claims abstract description 53
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 52
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims description 22
- 238000001962 electrophoresis Methods 0.000 claims description 17
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- 230000009182 swimming Effects 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 229920000914 Metallic fiber Polymers 0.000 description 11
- XOJVVFBFDXDTEG-UHFFFAOYSA-N Norphytane Natural products CC(C)CCCC(C)CCCC(C)CCCC(C)C XOJVVFBFDXDTEG-UHFFFAOYSA-N 0.000 description 10
- 239000008187 granular material Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000005543 nano-size silicon particle Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 208000016261 weight loss Diseases 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 206010061592 cardiac fibrillation Diseases 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002600 fibrillogenic effect Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a kind of high-temperature-resistant and anti-corrosion coating metal fibrofelt, including metal fiber felt substrate and the nanometer silicon dioxide particle clad for being coated on metal fiber felt substrate surface, the invention also discloses the preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt, it is first according to volume fraction and weighs nano SiO 2 particle dispersion liquid 50%~60%, polystyrene nanoparticles dispersion liquid 5%~20%, water 20%~45%, it is well mixed, obtain coating solution, then metal fiber felt is immersed in the coating solution, carries out electrophoretic process；Cooling obtains being coated with the metal fiber felt of nanometer silicon dioxide particle clad after finally the metal fiber felt progress after electrophoretic process is dried twice, the present invention solves metal fiber felt organic coating non-refractory present in prior art, and inorganic coating film forming is poor, adhesion is weak, the susceptible to plugging problem of hole.
Description
Technical field
The invention belongs to the high-temperature-resistant and anti-corrosion coating technology field of metal fiber felt, and in particular to a kind of anti-corruption of high temperature resistant
Erosion resisting coating metal fiber felt, the invention further relates to the preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt.
Background technology
The exclusive heat-resisting quantity of metal fiber felt can be directly used for the purification of high-temperature dusty gas so that waste heat can obtain
Recovery, the energy is saved, while secondary pollution will not be caused.There is metal fiber felt generally use resistant to elevated temperatures metal material to prepare
Form, such as 316L, 310S, FeCrAl etc., its temperature in use is up to 100 DEG C.But present many operating mode fluctuations of service, hold
Easily there is the exceeded operating mode of smoke components, the harmful components in flue gas can produce chemical reaction with filtrate, such as Cl and S2- ions, make
Mechanical performance into filtrate declines and the pernicious gas in broken invalid, particularly dust pelletizing system can be sent out in the case of temperature is relatively low
Raw dew condensation phenomenon, produces HCl or H2S corrosive liquids, aggravates the corrosion to metal filter material.Not yet solves metallic fiber in industry at present
The method that felt uses under with corrosive medium high-temperature flue gas environment.
The content of the invention
It is an object of the invention to provide a kind of high-temperature-resistant and anti-corrosion coating metal fibrofelt, solve and exist in the prior art
Metal fiber felt organic coating non-refractory, inorganic coating film forming is poor, adhesion is weak, the susceptible to plugging problem of hole.
It is a further object of the present invention to provide a kind of preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt.
First technical scheme of the present invention is a kind of high-temperature-resistant and anti-corrosion coating metal fibrofelt, including metal
Fibrofelt substrate and the nanometer silicon dioxide particle clad for being coated on metal fiber felt substrate surface.
Second technical scheme of the present invention is a kind of preparation side of high-temperature-resistant and anti-corrosion coating metal fibrofelt
Method, specifically implement according to following steps：
Step 1, nano SiO 2 particle dispersion liquid 50%~60%, pipe/polyhenylethylene nano are weighed according to volume fraction
Grain dispersion liquid 5%~20%, water 20%~45%, are well mixed, obtain coating solution；
Step 2, metal fiber felt is immersed in the coating solution that the step 1 obtains, carries out electrophoretic process；
Step 3, metal fiber felt after electrophoretic process in step 2 is subjected to cooling after drying twice obtains being coated with nanometer
The metal fiber felt of silica dioxide granule clad.
The characteristics of the second technical scheme that the present invention uses, also resides in,
In step 1 nano SiO 2 particle dispersion liquid by by nano SiO 2 particle is scattered, emulsion polymerization, suspension
Polymerization obtains, and the mass fraction of nano SiO 2 particle dispersion liquid is 20%~35%.
The particle diameter of nano SiO 2 particle is 50~100nm in nano SiO 2 particle dispersion liquid in step 1.
Polystyrene nanoparticles dispersion liquid passes through polystyrene is scattered, emulsion polymerization, suspension polymerisation obtain in step 1
, the mass fraction of polystyrene nanoparticles dispersion liquid is 5%~15%.
The particle diameter of polystyrene nanoparticles is 200~500nm in polystyrene nanoparticles dispersion liquid in step 1.
Used when nano SiO 2 particle dispersion liquid, polystyrene nanoparticles dispersion liquid, water are well mixed in step 1
Ultrasonic disperse technology mixes, and the purpose using ultrasonic disperse is to allow nano SiO 2 particle and polystyrene nanoparticles to mix
Uniformly.
Electrophoretic process is carried out in step 2 by the way of metal fiber felt is as anode, control electrophoretic voltage for 60~
100V, electrophoresis time are 5~10min, and electrophoresis temperature is 23-27 DEG C.
The drying temperature of first time is 200~250 DEG C in step 3, is incubated 20~40 minutes.
Secondary 450 DEG C~650 DEG C of drying temperature in step 3, it is incubated 1~4 hour.
The invention has the advantages that high-temperature-resistant and anti-corrosion coating metal fibrofelt, coating is substantially by metal fiber felt
All cladding (different from the coatings of only outer surface) of all fibres surface, both have good combination power, and resistance to dust granules wash away mill
Damage；Metallic fiber face coat directly contacts with corrosive medium during filtering use, so as to which metallic fiber base greatly improved
The high-temperature-resistant and anti-corrosion ability of material；In the preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt, using anodic electrophoresis mode
Nano particle can be uniformly coated on to fibrofelt surface, while the blocking of hole will not be caused；By adjusting electrophoretic voltage
With the matching of electrophoresis time, the thickness of coating can be accurately controlled；Nano SiO 2 particle is evenly distributed after high-temperature process,
Produce and merge into each other between grain, compactness is high.
Brief description of the drawings
Fig. 1 is metal fiber felt surface scan electron microscope before present invention coating；
Fig. 2 is metal fiber felt surface scan electron microscope after present invention coating.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of high-temperature-resistant and anti-corrosion coating metal fibrofelt of the present invention, metal fiber felt surface scan electron microscope is such as before coating
Shown in Fig. 1, metal fiber felt surface scan Electronic Speculum graph structure after coating is as shown in Fig. 2 including metal fiber felt substrate and cladding
It is uniform, densification in the nanometer silicon dioxide particle clad of metal fiber felt substrate surface, wherein nanometer silicon dioxide particle
It is coated on fiber surface.Surface is existed only in different from conventional coatings, the coating is substantially by all fibres table in metal fiber felt
Face carries out whole claddings, and coating and matrix have good combination power.
A kind of preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt, specifically implements according to following steps：
Step 1, nano SiO 2 particle dispersion liquid 50%~60%, pipe/polyhenylethylene nano are weighed according to volume fraction
Grain dispersion liquid 5%~20%, water 20%~45%, are well mixed, obtain coating solution, wherein, nano SiO 2 particle point
Dispersion liquid by by nano SiO 2 particle is scattered, emulsion polymerization, suspension polymerisation obtain, nano SiO 2 particle dispersion liquid
Mass fraction is 20%~35%, in nano SiO 2 particle dispersion liquid the particle diameter of nano SiO 2 particle for 50~
100nm, polystyrene nanoparticles dispersion liquid pass through polystyrene is scattered, emulsion polymerization, suspension polymerisation obtain, polystyrene
The mass fraction of nanoparticulate dispersion is 5%~15%, polystyrene nanoparticles in polystyrene nanoparticles dispersion liquid
Particle diameter be 200~500nm, when nano SiO 2 particle dispersion liquid, polystyrene nanoparticles dispersion liquid, water are well mixed
Mixed using ultrasonic disperse technology, the purpose using ultrasonic disperse is to allow nano SiO 2 particle and polystyrene nanoparticles
It is well mixed；
Nano particle in step 2, the coating solution obtained due to step 1 carries elecrtonegativity, so by metallic fiber
Felt is immersed in the coating solution that step 1 obtains, and carries out electrophoretic process, and the coating solution for usually obtaining step 1 pours into electricity
Swim groove in, metal fiber felt need be totally submerged in the solution of electrophoresis tank, and metal fiber felt away from upper liquid identity distance from more than
5cm, electrophoretic process is carried out by the way of metal fiber felt is as anode, it is 60~100V to control electrophoretic voltage, electrophoresis time
For 5~10min, electrophoresis temperature is 23-27 DEG C；
Step 3, metal fiber felt after electrophoretic process in step 2 is subjected to cooling after drying twice obtains being coated with nanometer
The metal fiber felt of silica dioxide granule clad, wherein, the drying temperature of first time is 200~250 DEG C, is incubated 20~40 points
Clock, secondary 450 DEG C~650 DEG C of drying temperature, 1~4 hour is incubated, the purpose of drying is to allow metal fiber felt table for the first time
Polystyrene nanoparticles between face and nano silicon are melted so that the arrangement of nano SiO 2 particle even compact with
And it is adhered to fiber surface；The purpose of second of high-temperature process is to remove organic polystyrene so that nano SiO 2 particle
Between produce and merge into each other, improve coating compactness, while add the adhesion of nanometer silicon dioxide particle and metallic fiber.
Embodiment 1
A kind of preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt, specifically implements according to following steps：
Step 1, according to volume fraction weigh nano SiO 2 particle dispersion liquid 60%, polystyrene nanoparticles are disperseed
Liquid 8%, water 32%, it is well mixed, obtains coating solution, wherein, nano SiO 2 particle dispersion liquid is by by silica
Nano particle is scattered, emulsion polymerization, suspension polymerisation obtain, and the mass fraction of nano SiO 2 particle dispersion liquid is 30%, two
The particle diameter of nano SiO 2 particle is 60nm in silica nano particle dispersion liquid, is gathered in polystyrene nanoparticles dispersion liquid
The particle diameter of styrene nano particle is 250nm.Polystyrene nanoparticles dispersion liquid is by the way that polystyrene is disperseed, emulsion is gathered
Close, suspension polymerisation acquisition, the mass fraction of polystyrene nanoparticles dispersion liquid is 10%, and nano SiO 2 particle disperses
Mixed when liquid, polystyrene nanoparticles dispersion liquid, water are well mixed using ultrasonic disperse technology, using the purpose of ultrasonic disperse
It is to allow nano SiO 2 particle and polystyrene nanoparticles to be well mixed；
Nano particle in step 2, the coating solution obtained due to step 1 carries elecrtonegativity, so by metallic fiber
Felt is immersed in the coating solution that step 1 obtains, and carries out electrophoretic process, and the coating solution for usually obtaining step 1 pours into electricity
Swim groove in, metal fiber felt need be totally submerged in the solution of electrophoresis tank, and metal fiber felt away from upper liquid identity distance from more than
5cm, electrophoretic process is carried out by the way of 316L metal fiber felts are as anode, it is 60V to control electrophoretic voltage, and electrophoresis time is
8min, electrophoresis temperature are 25 DEG C；
Step 3, metal fiber felt after electrophoretic process in step 2 is subjected to cooling after drying twice obtains being coated with nanometer
The metal fiber felt of silica dioxide granule clad, wherein, the drying temperature of first time is 220 DEG C, is incubated 25 minutes, second
500 DEG C of drying temperature, be incubated 2 hours.For the first time the purpose of drying be allow metal fiber felt surface and nano silicon it
Between polystyrene nanoparticles melt so that nano SiO 2 particle even compact is arranged and is adhered to fiber surface；
The purpose of second of high-temperature process is to remove organic polystyrene so that produces and merges into each other between nano SiO 2 particle,
Coating compactness is improved, while adds the adhesion of nanometer silicon dioxide particle and metallic fiber.
Scanned electron microscope observation, the coating completely coat fiber in 316L metal fiber felts, pristine fibre felt
As shown in table 1 with coating 316L fibrofelt performance test comparing results, compared with pristine fibre felt, 316L fibrofelts are saturating after coating
Gas is held essentially constant, after high-temperature oxydation, pristine fibre felt and coating 316L fibrofelts is molten for 25%HCl in concentration
Its weight-loss ratio is tested after corroding 20h in liquid and 25%H2SO4 solution respectively, the results showed that the decay resistance ratio of coated fiber felt
Fibrillation felt is significantly increased.
The pristine fibre felt of table 1 and coating 316L fibrofelt test results
Embodiment 2
A kind of preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt, specifically implements according to following steps：
Step 1, according to volume fraction weigh nano SiO 2 particle dispersion liquid 50%, polystyrene nanoparticles are disperseed
Liquid 14%, water 36%, it is well mixed, obtains coating solution, wherein, nano SiO 2 particle dispersion liquid is by by silica
Nano particle is scattered, emulsion polymerization, suspension polymerisation obtain, and the mass fraction of nano SiO 2 particle dispersion liquid is 25%, two
The particle diameter of nano SiO 2 particle is 80nm in silica nano particle dispersion liquid, and polystyrene nanoparticles dispersion liquid passes through
By polystyrene is scattered, emulsion polymerization, suspension polymerisation obtain, the mass fraction of polystyrene nanoparticles dispersion liquid is 15%,
The particle diameter of polystyrene nanoparticles is 320nm in polystyrene nanoparticles dispersion liquid.Nano SiO 2 particle dispersion liquid,
Mixed when polystyrene nanoparticles dispersion liquid, water are well mixed using ultrasonic disperse technology, be using the purpose of ultrasonic disperse
Nano SiO 2 particle and polystyrene nanoparticles are allowed to be well mixed；
Nano particle in step 2, the coating solution obtained due to step 1 carries elecrtonegativity, so by metallic fiber
Felt is immersed in the coating solution that step 1 obtains, and carries out electrophoretic process, and the coating solution for usually obtaining step 1 pours into electricity
Swim groove in, metal fiber felt need be totally submerged in the solution of electrophoresis tank, and metal fiber felt away from upper liquid identity distance from more than
5cm, electrophoretic process is carried out by the way of 310S metal fiber felts are as anode, it is 80V to control electrophoretic voltage, and electrophoresis time is
6min, electrophoresis temperature are 26 DEG C；
Step 3, metal fiber felt after electrophoretic process in step 2 is subjected to cooling after drying twice obtains being coated with nanometer
The metal fiber felt of silica dioxide granule clad, wherein, the drying temperature of first time is 250 DEG C, is incubated 40 minutes, second
550 DEG C of drying temperature, be incubated 3 hours.For the first time the purpose of drying be allow metal fiber felt surface and nano silicon it
Between polystyrene nanoparticles melt so that nano SiO 2 particle even compact is arranged and is adhered to fiber surface；
The purpose of second of high-temperature process is to remove organic polystyrene so that produces and merges into each other between nano SiO 2 particle,
Coating compactness is improved, while adds the adhesion of nanometer silicon dioxide particle and metallic fiber.
Scanned electron microscope observation, the coating completely coat fiber in 310S metal fiber felts, pristine fibre felt
As shown in table 2 with the contrast of coating 310S fibrofelts the performance test results, compared with pristine fibre felt, 310S fibrofelts are saturating after coating
Gas is held essentially constant, after high-temperature oxydation, by original and coating 310S fibrofelts concentration be 25%HCl solution and
Its weight-loss ratio is tested after corroding 20h in 25%H2SO4 solution respectively, the results showed that the decay resistance of coated fiber felt compares fibril
Dimension felt is significantly increased.
The pristine fibre felt of table 2 and coating 310S fibrofelt test results
Embodiment 3
A kind of preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt, specifically implements according to following steps：
Step 1, according to volume fraction weigh nano SiO 2 particle dispersion liquid 55%, polystyrene nanoparticles are disperseed
Liquid 20%, water 25%, it is well mixed, obtains coating solution, wherein, nano SiO 2 particle dispersion liquid is by by silica
Nano particle is scattered, emulsion polymerization, suspension polymerisation obtain, and the mass fraction of nano SiO 2 particle dispersion liquid is 30%, two
The particle diameter of nano SiO 2 particle is 80nm in silica nano particle dispersion liquid, and polystyrene nanoparticles dispersion liquid passes through
By polystyrene is scattered, emulsion polymerization, suspension polymerisation obtain, the mass fraction of polystyrene nanoparticles dispersion liquid is 18%,
The particle diameter of polystyrene nanoparticles is 450nm in polystyrene nanoparticles dispersion liquid.Nano SiO 2 particle dispersion liquid,
Mixed when polystyrene nanoparticles dispersion liquid, water are well mixed using ultrasonic disperse technology, be using the purpose of ultrasonic disperse
Nano SiO 2 particle and polystyrene nanoparticles are allowed to be well mixed；
Nano particle in step 2, the coating solution obtained due to step 1 carries elecrtonegativity, so by metallic fiber
Felt is immersed in the coating solution that step 1 obtains, and carries out electrophoretic process, and the coating solution for usually obtaining step 1 pours into electricity
Swim groove in, metal fiber felt need be totally submerged in the solution of electrophoresis tank, and metal fiber felt away from upper liquid identity distance from more than
5cm, electrophoretic process is carried out by the way of FeCrAl metal fiber felts are as anode, it is 70V to control electrophoretic voltage, electrophoresis time
For 10min, electrophoresis temperature is 27 DEG C；
Step 3, metal fiber felt after electrophoretic process in step 2 is subjected to cooling after drying twice obtains being coated with nanometer
The metal fiber felt of silica dioxide granule clad, wherein, the drying temperature of first time is 230 DEG C, is incubated 30 minutes, second
600 DEG C of drying temperature, be incubated 4 hours.For the first time the purpose of drying be allow metal fiber felt surface and nano silicon it
Between polystyrene nanoparticles melt,
So that fiber surface is arranged and be adhered to nano SiO 2 particle even compact；The mesh of second of high-temperature process
Be to remove organic polystyrene so that produce and merge into each other between nano SiO 2 particle, improve coating compactness, simultaneously
Add the adhesion of nanometer silicon dioxide particle and metallic fiber.
Scanned electron microscope observation, the coating completely coat fiber in FeCrAl metal fiber felts, pristine fibre
Felt and the contrast of coating FeCrAl fibrofelts the performance test results are as shown in table 3, and compared with pristine fibre felt, FeCrAl is fine after coating
Dimension felt gas permeability is held essentially constant, after high-temperature oxydation, will it is original with coating FeCrAl fibrofelts be 25%HCl in concentration
Its weight-loss ratio is tested after corroding 20h in solution and 25%H2SO4 solution respectively, the results showed that the decay resistance of coated fiber felt
It is significantly increased than fibrillation felt.
The pristine fibre felt of table 3 and coating FeCrAl fibrofelt test results
Claims (10)
1. a kind of high-temperature-resistant and anti-corrosion coating metal fibrofelt, it is characterised in that including metal fiber felt substrate and be coated on gold
Belong to the nanometer silicon dioxide particle clad of fibrofelt substrate surface.
2. a kind of preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt, it is characterised in that specifically real according to following steps
Apply：
Step 1, nano SiO 2 particle dispersion liquid 50%~60%, polystyrene nanoparticles point are weighed according to volume fraction
Dispersion liquid 5%~20%, water 20%~45%, it is well mixed, obtains coating solution；
Step 2, metal fiber felt is immersed in the coating solution that the step 1 obtains, carries out electrophoretic process；
Step 3, metal fiber felt after electrophoretic process in step 2 is subjected to cooling after drying twice obtains being coated with nano-silica
The metal fiber felt of silicon carbide particle clad.
A kind of 3. preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, it is characterised in that
In the step 1 nano SiO 2 particle dispersion liquid by by nano SiO 2 particle is scattered, emulsion polymerization, suspension polymerisation
Obtain, the mass fraction of nano SiO 2 particle dispersion liquid is 20%~35%.
A kind of 4. preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, it is characterised in that
The particle diameter of nano SiO 2 particle is 50~100nm in nano SiO 2 particle dispersion liquid in the step 1.
A kind of 5. preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, it is characterised in that
Polystyrene nanoparticles dispersion liquid is by by polystyrene is scattered, emulsion polymerization, suspension polymerisation obtain, gathering in the step 1
The mass fraction of styrene nanoparticulate dispersion is 5%~15%.
A kind of 6. preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, it is characterised in that
The particle diameter of polystyrene nanoparticles is 200~500nm in polystyrene nanoparticles dispersion liquid in the step 1.
A kind of 7. preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, it is characterised in that
Using ultrasound when nano SiO 2 particle dispersion liquid, polystyrene nanoparticles dispersion liquid, water are well mixed in the step 1
Dispersion technology mixes, and the purpose using ultrasonic disperse is to allow nano SiO 2 particle and polystyrene nanoparticles to mix
It is even.
A kind of 8. preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, it is characterised in that
Electrophoretic process is carried out in the step 2 by the way of metal fiber felt is as anode, it is 60~100V to control electrophoretic voltage, electricity
The swimming time is 5~10min, and electrophoresis temperature is 23~27 DEG C.
A kind of 9. preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, it is characterised in that
The drying temperature of first time is 200~250 DEG C in the step 3, is incubated 20~40 minutes.
10. a kind of preparation method of high-temperature-resistant and anti-corrosion coating metal fibrofelt according to claim 2, its feature exist
In, secondary 450 DEG C~650 DEG C of drying temperature in the step 3, insulation 1~4 hour.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704390A (en) * | 2018-06-15 | 2018-10-26 | 西安菲尔特金属过滤材料有限公司 | A kind of high temperature denitration dust collecting integral metallic fiber filter material and preparation method thereof |
| CN116178007A (en) * | 2022-12-21 | 2023-05-30 | 中国建筑材料科学研究总院有限公司 | Heat-accumulating ring of high temperature resistant composite material and its preparation method and application |
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| CN1580099A (en) * | 2003-08-11 | 2005-02-16 | 上海杰事杰新材料股份有限公司 | Continuous fiber reinforced thermoplastic composite material |
| CN104549960A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | High-temperature-resistant heat-insulation coating production method |
| CN106480581A (en) * | 2016-09-21 | 2017-03-08 | 东莞市联洲知识产权运营管理有限公司 | A kind of high intensity light and thin fabric of waterproof UV resistance and preparation method thereof |
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| CN108704390A (en) * | 2018-06-15 | 2018-10-26 | 西安菲尔特金属过滤材料有限公司 | A kind of high temperature denitration dust collecting integral metallic fiber filter material and preparation method thereof |
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| CN116178007A (en) * | 2022-12-21 | 2023-05-30 | 中国建筑材料科学研究总院有限公司 | Heat-accumulating ring of high temperature resistant composite material and its preparation method and application |
| CN116178007B (en) * | 2022-12-21 | 2024-02-02 | 中国建筑材料科学研究总院有限公司 | High-temperature-resistant composite heat-gathering ring and its preparation method and application |
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Address after: 710201 Shaanxi city of Xi'an Province Economic and Technological Development Zone Jingwei Industrial Park Road No. 15 Patentee after: Xi'an ferro metal filter material Co.,Ltd. Address before: 710201 Shaanxi Province, Xi'an City Economic Development Zone Industrial Park, Jing Wei Jin Road No. 15 Patentee before: XI'AN FILTER METAL MATERIALS Co.,Ltd. |