CN102558924B - Preparation methods of high temperature resistant anticorrosion potassium silicate coating and corresponding coat - Google Patents
Preparation methods of high temperature resistant anticorrosion potassium silicate coating and corresponding coat Download PDFInfo
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- CN102558924B CN102558924B CN201010580684.9A CN201010580684A CN102558924B CN 102558924 B CN102558924 B CN 102558924B CN 201010580684 A CN201010580684 A CN 201010580684A CN 102558924 B CN102558924 B CN 102558924B
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- 238000000576 coating method Methods 0.000 title claims abstract description 117
- 239000011248 coating agent Substances 0.000 title claims abstract description 116
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000004111 Potassium silicate Substances 0.000 title claims abstract description 62
- 229910052913 potassium silicate Inorganic materials 0.000 title claims abstract description 62
- 235000019353 potassium silicate Nutrition 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 64
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 230000001680 brushing effect Effects 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 24
- ZTFZSHLWORMEHO-UHFFFAOYSA-A pentaaluminum;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O ZTFZSHLWORMEHO-UHFFFAOYSA-A 0.000 claims description 21
- 239000012153 distilled water Substances 0.000 claims description 16
- 238000000498 ball milling Methods 0.000 claims description 15
- 239000003973 paint Substances 0.000 claims description 14
- 230000009970 fire resistant effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 12
- 238000005488 sandblasting Methods 0.000 claims description 12
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- QPLNUHHRGZVCLQ-UHFFFAOYSA-K aluminum;[oxido(phosphonooxy)phosphoryl] phosphate Chemical compound [Al+3].OP([O-])(=O)OP([O-])(=O)OP(O)([O-])=O QPLNUHHRGZVCLQ-UHFFFAOYSA-K 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000011701 zinc Substances 0.000 description 20
- 229910000975 Carbon steel Inorganic materials 0.000 description 13
- 239000010962 carbon steel Substances 0.000 description 13
- 230000003628 erosive effect Effects 0.000 description 11
- 239000010935 stainless steel Substances 0.000 description 11
- 229910001220 stainless steel Inorganic materials 0.000 description 11
- 229910001018 Cast iron Inorganic materials 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 235000019832 sodium triphosphate Nutrition 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- ANOBYBYXJXCGBS-UHFFFAOYSA-L stannous fluoride Chemical compound F[Sn]F ANOBYBYXJXCGBS-UHFFFAOYSA-L 0.000 description 1
- 235000011178 triphosphate Nutrition 0.000 description 1
- 239000001226 triphosphate Substances 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 description 1
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- Paints Or Removers (AREA)
Abstract
The invention relates to preparation methods of a high temperature resistant anticorrosion potassium silicate coating and a corresponding coat. The high temperature resistant anticorrosion potassium silicate coating is formed by a solute and a solvent, wherein the solute comprises a component A liquid potassium silicate having a module of 3.0-4.0 and a weight accounting for 30-80% of the total weight of the coating, and a component B which comprises nanometer Cr powder having a weight accounting for 1-15% of the total weight of the coating, aluminum triphosphate having a weight accounting for 3-20% of the total weight of the coating, Zn powder having a weight accounting for 5-20% of the total weight of the coating and Al2O3 having a weight accounting for 10-50% of the total weight of the coating; and the solvent is water, and the weight ratio of the solvent to the solute is 1:3-10. The method for preparing the coat through utilizing the coating comprises the following steps: spraying or brushing the coating on the surface of a sandblasted steel iron part, drying the surface for 5-10min, carrying out temperature maintenance for 0.5-4h according to a furnace temperature of 200-260DEG C, taking out the part, and air-cooling the part to obtain the coat. The coat of the invention has the characteristics of high temperature resistance, anticorrosion and water resistance, and has the advantages of good thermal shock resistance, nontoxicity, no pollution, and environmental protection benefiting.
Description
Technical field
The present invention relates to science, a kind of fire resistant anticorrosive potassium silicate coating of ferrous materials, preparation method of corresponding coating of being mainly used in is provided especially.
Background technology
Common iron and steel is widely used in development of the national economy every field as the material of a class economy as carbon steel and cast iron, but its low erosion resistance and oxidation-resistance require to take corresponding safeguard procedures.Stainless steel has good resistance to normal temperature corrosive nature, but when temperature is higher, its antioxidant property is poor, especially in salt mist environment, corrodes even more serious.Organic coating has long applicating history as the protective coating of metallic substance, but a shortcoming of organic coating is to contain organic solvent, very unfavorable to protection of the environment.On the other hand, the weathering resistance of most organic coatings is poor, should not use as outdoor coating.Aspect high-temperaure coating, only have the minority coating such as organosilicon coating can meet this requirement, but have equally the problem of organism discharge.The inorganic paint that the waterborne zinc-rich coating of take is representative has good resistance to elevated temperatures, but have that the microcosmic porous of coating causes that shielding properties is poor, coating premature failure, coating have the shortcomings such as crackle tendency, execution conditions are comparatively harsh when thicker.Although can improve its corrosion resistance nature by improving the modulus of silicate, easy gel when modulus is higher, coating is unstable.
Aspect high temperature protection, when temperature fluctuation is larger, inorganic coating is easier to peel off from body material, that causes this problem is that coating is more crisp at all, when differing greatly, coating thermal expansivity and matrix metal will produce larger thermal stresses, when stress concentration surpasses the intensity of coating, will make coating cracking or peel off, the stress that the key of solution is to increase the consistency of coating and matrix and coating is produced is discharged in time.
Summary of the invention
This object is to provide the fire resistant anticorrosive potassium silicate coating that a kind of technique effect is better mainly used in ferrous materials, the preparation method of corresponding coating.
Fire resistant anticorrosive potassium silicate coating of the present invention, it is characterized in that: described coating consists of solute and solvent two parts, wherein solute part consists of component first and component second, and wherein component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second by accounting for the nanometer Cr powder of coating total weight percent 0.5～15%, the Zn powder of 3～20% aluminium triphosphate 5～20% and 10～50% aluminium sesquioxide form; Solvent is water, and it is 1:3～10 that the part by weight of solvent and solute closes.
Fire resistant anticorrosive potassium silicate coating for ferrous materials of the present invention, also claimed lower several preferred content:
Described coating meets following requirement: account for the liquid potassium silicate of gross weight 40～70%, 5～15% aluminium triphosphate, 3～10% nanometer Cr powder, 8～15% Zn powder, 20～40% aluminium sesquioxide.
Liquid potassium silicate modulus is 3.0～3.8, and nanometer Cr powder footpath is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns; The pH value of tripolyphosphate aluminum water solution (10%) is 5.0～7.5.
The preparation method of described coating is: take in proportion nanometer Cr powder, aluminium triphosphate, Zn powder and aluminium sesquioxide in component second, put into ball grinder with rotating speed ball milling 1～2h of 250～350rpm after pulverizing, make component second after taking-up; Then take in proportion the component second after potassium silicate and ball milling, component second is joined in potassium silicate while stirring and the two is fully mixed after add distilled water, the ratio of distilled water and coating is 1:3～10, and the rotating speed with 2000～2600rpm in stirrer stirs 5～20 minutes by obtaining coating after 200 eye mesh screens filtrations.
The present invention is the preparation method of claimed fire resistant anticorrosive potassium silicate coating also, it is characterized in that:
Described coating consists of solute and solvent two parts, and wherein solute part consists of component first and component second, and wherein component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second by accounting for the nanometer Cr powder of coating total weight percent 0.5～15%, the Zn powder of 3～20% aluminium triphosphate 5～20% and 10～50% aluminium sesquioxide form; Solvent is water, and it is 1:3～10 that the part by weight of solvent and solute closes;
The preparation method of described coating is: take in proportion nanometer Cr powder, aluminium triphosphate and aluminium sesquioxide in component second, put into ball grinder with rotating speed ball milling 1～2h of 250～350rpm after pulverizing, make component second after taking-up; Then take in proportion the component second after potassium silicate and ball milling, component second is joined in potassium silicate while stirring and the two is fully mixed after add distilled water, the ratio of distilled water and coating is 1:3～10, and the rotating speed with 2000～2600rpm in stirrer stirs 5～20 minutes by obtaining coating after 200 eye mesh screens filtrations.
The requirement of being prepared described coating by coating is: the mode of employing spraying or brushing is by paint spay-coating or brush the ferrous materials component surface through sandblasting, after surface drying 5～10min, in furnace temperature, is to be incubated 0.5～4h under 200～260 ℃ of conditions; After taking out air cooling, obtain described coating.
The coating that described coating is prepared use preferably also meets following requirement: liquid potassium silicate account for gross weight 40～70%, aluminium triphosphate 5～15%, nanometer Cr powder 3～10%, Zn powder 8～15%, aluminium sesquioxide 10～40%;
Liquid potassium silicate modulus is 3.0～3.8, and nanometer Cr powder footpath is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns; The pH value of tripolyphosphate aluminum water solution (10%) is 5.0～7.5.
The requirement of being prepared described coating by coating is: the mode of employing spraying or brushing is by paint spay-coating or brush the ferrous materials component surface through sandblasting, after surface drying 5～10min, in furnace temperature, is to be incubated 0.5～4h under 200～260 ℃ of conditions; After taking out air cooling, obtain described coating.
Prepare in the formulation for coating material that described coating used the weight percent content of each composition require be: liquid potassium silicate 30～80%, nanometer Cr powder 0.5～15%, aluminium triphosphate 3～20%, Zn powder 5～20% and aluminium sesquioxide 10～50%.
Of the present inventionly be mainly used in fire resistant anticorrosive environment-protecting nanometer modified potassium silicate coating for ferrous materials, it has high temperature resistant, protection against corrosion, water-fast feature simultaneously, has good thermal shock resistance, and coating is nontoxic, pollution-free, is conducive to environmental protection.
, erosion shield high temperature resistant for ferrous materials involved in the present invention, coating is not containing organic solvent, nontoxic, pollution-free.In the present invention, with nanometer Cr powder, improve antioxidant property and the corrosion resistance nature of coating, nanometer Cr powder add effective antioxidant property and thermal shock performance that has improved coating, because nano-powder particle is less, thermal stresses at process of cooling floating coat has obtained effective dispersion, avoid occurring larger stress concentration, thereby improved the performance of the antistripping of coating.Aluminium triphosphate is a kind of good rust-stabilising pigment, can form complicated compound with metal ion, and metal is had to passivation, can improve the corrosion resistance nature of coating.Zn powder has promoted solidifying of potassium silicate on the one hand, has strengthened on the other hand the corrosion resistance nature of coating, aluminium sesquioxide add the thermotolerance that has improved coating, also given coating good wear resisting property and hardness simultaneously.Be heating and curing and improved the water resistance of coating.Application of paints involved in the present invention reaches 1500h in steel material surface resisting salt fog corrosion, in the time of 500 ℃, resistance to elevated temperatures improves more than 5 times compared with carbon steel material, painting is contained in after stainless steel surface that resistance to 95 ℃ of hot salt brines reach 2000h and coating is not destroyed, matrix does not corrode, and resistance to thermal shock 100 times is above and do not peel off or ftracture.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is Fig. 1 coating microtexture exterior view;
Fig. 2 coating microtexture sectional view;
Fig. 3 is carbon steel/coating salt air corrosion 1500h macro morphology;
Fig. 4 is carbon steel at the oxidation kinetics curve of 500 ℃.
Embodiment
Embodiment 1
Taking nanometer Cr powder, 100 g aluminium triphosphates, the 650 g particle diameters that 100 g particle diameters are 50nm is the aluminium sesquioxide of 2 μ m, and 50g particle diameter is that the Zn powder of 20 microns is put into ball grinder with rotating speed ball milling component two 1h of 300rpm.Take 550g modulus and be 3.0 potassium silicate, 450g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 200g distilled water, the rotating speed with 2300rpm in stirrer stirs 5 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 6min and be 210 ℃ is incubated 1.5h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 2
Take the Cr powder that 100 g particle diameters are 100nm, 30g aluminium triphosphate, 140g particle diameter is the aluminium sesquioxide of 50 μ m, 80g particle diameter is that the Zn powder of 30 microns is put into ball grinder with rotating speed ball milling component two 1.2h of 350rpm.Take 520g modulus and be 3.5 potassium silicate, 280g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 100g distilled water, the rotating speed with 2400rpm in stirrer stirs 15 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 8min and be 200 ℃ is incubated 0.5h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 3
Taking particle diameter is that 192g particle diameter is the Cr powder of 30nm, 18g aluminium triphosphate, and 688g particle diameter is the aluminium sesquioxide of 45 μ m, 200g particle diameter is that the Zn powder of 30 microns is put into ball grinder with rotating speed ball milling component two 1.5h of 330rpm.Take modulus and be 3.5 potassium silicate 800g, 1200g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 500g distilled water, the rotating speed with 2450rpm in stirrer stirs 10 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brushing or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 10min and be 235 ℃ is incubated 1.2h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 4
Taking particle diameter is Cr powder 264 g of 10nm, aluminium triphosphate 528 g, and particle diameter is 25 μ m aluminium sesquioxide 1268 g, 800g particle diameter is that the Zn powder of 50 microns is put into ball grinder with rotating speed ball milling component two 2h of 310rpm.Take modulus and be 3.8 potassium silicate 1400g, component two 2788g, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 1000g distilled water, the rotating speed with 2550rpm in stirrer stirs 15 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 10min and be 215 ℃ is incubated 2h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 5
Taking 275g particle diameter is the Cr powder of 15nm, 825g aluminium triphosphate, and 2500g particle diameter is 10 μ m aluminium sesquioxides, 250g particle diameter is that the Zn powder of 40 microns is put into ball grinder with rotating speed ball milling component two 1.5h of 300rpm.Take 1500g modulus and be 3.1 potassium silicate, 3500g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 550g distilled water, the rotating speed with 2600rpm in stirrer stirs 10 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 10min and be 230 ℃ is incubated 0.5h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 6
Taking 385g particle diameter is the Cr powder of 63nm, 1075g aluminium triphosphate, and 340g particle diameter is the aluminium sesquioxide of 40 μ m, 450g particle diameter is that the Zn powder of 20 microns is put into ball grinder with rotating speed ball milling component two 2h of 300rpm.Take 3000g modulus and be 3.4 potassium silicate, 2000g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 1000g distilled water, the rotating speed with 2500rpm in stirrer stirs 12 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 5min and be 250 ℃ is incubated 0.5h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 7
Taking 66g particle diameter is the Cr powder of 85nm, 890g aluminium triphosphate, and 1414g particle diameter is 20 μ m aluminium sesquioxides, 600g particle diameter is that the Zn powder of 10 microns is put into ball grinder with rotating speed ball milling component two 1h of 350rpm.Take 3300g modulus and be 3.2 potassium silicate, 2700g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 1500g distilled water, the rotating speed with 2100rpm in stirrer stirs 8 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 8min and be 240 ℃ is incubated 3h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 8
Taking 990g particle diameter is the Cr powder of 35nm, 162g aluminium triphosphate, and 588g particle diameter is the aluminium sesquioxide of 10 μ m, 500g particle diameter is that the Zn powder 480g particle diameter of 35 microns is that the Zn powder of 50 microns is put into ball grinder with rotating speed ball milling component two 1.8h of 330rpm.Take 3600g modulus and be 3.7 potassium silicate, 2400g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 2000g distilled water, the rotating speed with 2000rpm in stirrer stirs 10 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 8min and be 260 ℃ is incubated 4h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment 9
Taking 140g particle diameter is the Cr powder of 45nm, 220g aluminium triphosphate, and 120g particle diameter is the aluminium sesquioxide of 8 μ m, 500g particle diameter is that the Zn powder of 30 microns is put into ball grinder with the rotating speed ball milling component 2 1.6 of 310rpm.Take 3200g modulus and be 4.0 potassium silicate, 800g component two, add while stirring in potassium silicate component two powders are fully mixed with potassium silicate, add 400g distilled water, the rotating speed with 2300rpm in stirrer stirs 12 minutes by obtaining coating after 200 eye mesh screens filtrations.The mode that adopts spraying or brush is by paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature after surface drying 8min and be 245 ℃ is incubated 0.5h.After taking out air cooling, obtain high temperature resistant, erosion shield.
Embodiment result shows, the fire resistant anticorrosive coating technology obtaining by this technique has good corrosion-resistant and resistance to elevated temperatures, is easy to control, and is applicable to suitability for industrialized production, has nontoxic, free of contamination characteristic, is conducive to environment protection.
Claims (4)
1. fire resistant anticorrosive potassium silicate coating, it is characterized in that: described coating consists of solute and solvent two parts, wherein solute part consists of component first and component second, and wherein component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second consists of the nanometer Cr powder, 3～20% aluminium triphosphate, 5～20% Zn powder and 10～50% the aluminium sesquioxide that account for coating total weight percent 0.5～15%; Solvent is water, and it is 1:3～10 that the part by weight of solvent and solute closes.
2. according to fire resistant anticorrosive potassium silicate coating claimed in claim 1, it is characterized in that:
Described coating meets following requirement: account for the liquid potassium silicate of gross weight 30～80%, 3～20% aluminium triphosphate, 5～20% Zn powder, 0.5～15% nanometer Cr powder, 10～50% aluminium sesquioxide;
Liquid potassium silicate modulus is 3.0～4.0, and the particle diameter of nanometer Cr powder is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns.
3. the preparation method of fire resistant anticorrosive potassium silicate coating, is characterized in that:
Fire resistant anticorrosive potassium silicate coating consists of solute and solvent two parts, and wherein solute part consists of component first and component second, and wherein component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second consists of the nanometer Cr powder, 3～20% aluminium triphosphate, 5～20% Zn powder and 10～50% the aluminium sesquioxide that account for coating total weight percent 0.5～15%; Solvent is distilled water, and it is 1:3～10 that the part by weight of solvent and solute closes;
The preparation method of described coating is: take in proportion nanometer Cr powder, aluminium triphosphate, Zn powder and aluminium sesquioxide in component second, put into ball grinder with rotating speed ball milling 1～2h of 250～350rpm after pulverizing, make component second after taking-up; Then take in proportion the component second after potassium silicate and ball milling, component second is joined in potassium silicate while stirring and the two is fully mixed after add distilled water, the ratio of distilled water and coating is 1:3～10, and the rotating speed with 2000～2600rpm in stirrer stirs 5～20 minutes by obtaining coating after 200 eye mesh screens filtrations;
The requirement of being prepared described coating by coating is: the mode of employing spraying or brushing is by paint spay-coating or brush the ferrous materials component surface through sandblasting, after surface drying 5～10min, in furnace temperature, is to be incubated 0.5～4h under 200～260 ℃ of conditions; After taking out air cooling, obtain described coating.
4. according to the preparation method of fire resistant anticorrosive potassium silicate coating claimed in claim 3, it is characterized in that: the coating that described coating is prepared use meets following requirement: liquid potassium silicate accounts for gross weight 30～80%, aluminium triphosphate 3～20%, nanometer Cr powder 0.5～15%, Zn powder 5～20%, aluminium sesquioxide 10～50%;
Liquid potassium silicate modulus is 3.0～4.0, and nanometer Cr powder footpath is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010580684.9A CN102558924B (en) | 2010-12-09 | 2010-12-09 | Preparation methods of high temperature resistant anticorrosion potassium silicate coating and corresponding coat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010580684.9A CN102558924B (en) | 2010-12-09 | 2010-12-09 | Preparation methods of high temperature resistant anticorrosion potassium silicate coating and corresponding coat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102558924A CN102558924A (en) | 2012-07-11 |
| CN102558924B true CN102558924B (en) | 2014-09-17 |
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| CN102982747B (en) * | 2012-12-11 | 2015-08-12 | 湖北春永明亮科技有限公司 | Prepare the method for fireproof long persistence fire control sign |
| CN104263022B (en) * | 2014-10-23 | 2017-04-12 | 国网辽宁省电力有限公司营口供电公司 | Potassium silicate paint added with hydroxyl silsesquioxane and preparation method thereof |
| CN104650634A (en) * | 2015-03-11 | 2015-05-27 | 国网辽宁省电力有限公司营口供电公司 | Wear-resistant sodium silicate coating for electric field environment and preparation method of coating |
| CN105860618B (en) * | 2016-05-26 | 2018-10-30 | 北京化工大学 | A kind of electric double layer anticorrosive paint and its application |
| CN107033640A (en) * | 2016-11-23 | 2017-08-11 | 刘恩林 | A kind of preparation method and applications of aqueous inorganic paint |
| CN106733516B (en) * | 2016-12-30 | 2021-01-29 | 中国兵器科学研究院宁波分院 | Preparation method of high-temperature-resistant and corrosion-resistant coating |
| CN109135365A (en) * | 2018-07-27 | 2019-01-04 | 佛山市雨禾电器制造有限公司 | A kind of processing method of high temperature resistant and corrosion resistant selenium coating |
| CN111825416A (en) * | 2019-12-13 | 2020-10-27 | 国能生物发电集团有限公司 | High-temperature corrosion resistant coating, coating and preparation method thereof |
| CN114316642A (en) * | 2021-12-23 | 2022-04-12 | 东方电气集团东方汽轮机有限公司 | High-temperature-resistant anti-corrosion silicate-based coating and preparation method and application method thereof |
| CN115785706B (en) * | 2022-12-28 | 2024-02-02 | 江苏集萃道路工程技术与装备研究所有限公司 | Environment-friendly inorganic static-conductive anticorrosive paint and preparation method thereof |
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| US6001494A (en) * | 1997-02-18 | 1999-12-14 | Technology Partners Inc. | Metal-ceramic composite coatings, materials, methods and products |
| CN101643612A (en) * | 2009-07-17 | 2010-02-10 | 华南农业大学 | Waterproof antiseptic wearproof nano paint, preparation method, use method and application thereof |
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| US6001494A (en) * | 1997-02-18 | 1999-12-14 | Technology Partners Inc. | Metal-ceramic composite coatings, materials, methods and products |
| CN101643612A (en) * | 2009-07-17 | 2010-02-10 | 华南农业大学 | Waterproof antiseptic wearproof nano paint, preparation method, use method and application thereof |
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