CN109504137A - A kind of high temperature resistant antiwear coating material and preparation method thereof for boiler water wall - Google Patents
A kind of high temperature resistant antiwear coating material and preparation method thereof for boiler water wall Download PDFInfo
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- CN109504137A CN109504137A CN201811400043.3A CN201811400043A CN109504137A CN 109504137 A CN109504137 A CN 109504137A CN 201811400043 A CN201811400043 A CN 201811400043A CN 109504137 A CN109504137 A CN 109504137A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Abstract
The invention discloses a kind of high temperature resistant antiwear coating material for boiler water wall and preparation method thereof and construction technologies, by mass percentage, including component: high temperature resistant binder 20~50%, nano material 1~40%, refractory aggregate 5~30%, water 0~50%, it is able to solve the poor problem on the weak side with adhesive force after short term corrosion of existing thermal spraying alloy coating material wearability, the coating material not only has high hardness, the excellent Erosive Properties of resistance to particulate matter, and metal base is adhered to good bonding.In addition, the construction method of the coating material is easy quickly, project cost can be significantly reduced.
Description
Technical field
The present invention relates to coating material technical field more particularly to a kind of high temperature resistant antiwear paintings for boiler water wall
Layer material and preparation method thereof.
Background technique
Modern society is increasingly severe to the dependence of electric energy, thus people to the safe operation attention degree of power plant increasingly
It is high.The boiler blasting safety of power plant is also concerned, and so-called boiler of power plant " four pipes " refers to superheater in boiler, water cooling
Wall, economizer and reheater, the main aspect for guaranteeing that boiler of power plant works normally is to prevent boiler blasting from leaking, due to boiler
" four pipe " cover boiler of power plant whole is heated and compression face, and be also the core part of boiler work, at work it
The internal immense pressure and some chemical components that subject working medium effect, outside subjects the high temperature of coal combustion, corrode and
The environment of abrasion, while suffering from the inside and outside effect carried out between vapor and fire is most important in all components of boiler and most
Position easy to damage, so being easy to that failure and leakage problem occurs.According to incomplete statistics over the years, boiler as the result is shown
" four pipes " quick-fried leakage accounts for first of all kinds of unplanned outage reasons of thermal power generation unit.Boiler in the process of running, once occur " four
The quick-fried leakage of pipe " certainly will increase unplanned outage loss, increase maintenance workload, be also possible to lead to a disaster sometimes, seriously affect firepower
Power plant safe and economical operation.
The main reason for region that quick-fried leakage occurs most frequently is the water-cooling wall of boiler, causes quick-fried leakage is abrasion and corrosion.Abrasion
Predominantly unburned net pulverized coal particle object and the net flyash of combustion, which for a long time wash away water screen tube, to be caused its to be thinned even to burst.
The corrosion condition of boiler internal is complex, on the whole for based on sulfide acid atmosphere corrosion and reducing atmosphere it is rotten
Erosion.
Currently, wear-and corrosion-resistant coating can be broadly divided into organic coating and inorganic coating by film forming matter.Organic coating is main
Promoting the wear-resisting property of organic coating by way of adding the abrasive aggregates of larger particles, such as 105400372 B of patent CN,
Be exactly using the technical method preparation wear-resistant coating, but its apply four main tubes of boiler when, heat resistance become maximum obstacle；
Though and no added bulky grain abrasive aggregates in 108384380 A of patent CN, by using the higher polysiloxanes of hardness (specially
It is polysiloxanes after methyltrimethoxysilane cures in benefit) resin is as binder, to reach the high-wearing feature of coating
Energy.And protection and repairing measures master for high temperature corrosion and the erosive wear of boiler blasting, especially boiler water-wall tube
If preparing conventional crude crystal coating using thermal spraying, such as FeAlCr coating and Cr2C3- NiCr coating etc..But coarse-grain coating is being taken into account
There is the contradictions for being difficult to overcome in terms of hardness (i.e. wearability) and fracture toughness (i.e. adhesive force) --- the hardness of alloy coat
The reduction for often meaning that fracture toughness is improved, to cause coating brittleness to increase, bond strength decline, was used in subsequent
Hard phase easily occurs in journey fall off and phenomena such as coating cracking, seriously reduce its service performance, in addition thermal spraying alloy coating
Porosity can also seriously affect anticorrosive property, because the corrosion sprawling under coating leads to coating shedding, lose corrosion and wear effect,
As patent CN 105543765B is revealed, it is necessary to sealing of hole just can, but the patent is also to use organic components for film forming matter
Matter, heat resistance is insufficient, influences its use.
The appearance of nano ceramic coat is then expected to well solve this contradiction.As long as spraying parameter setting is rationally,
The nano ceramic coat of preparation has more excellent comprehensive performance than coarse-grain coating, can be widely applied to industrial production sector,
Such as aerospace industry, power boiler tubes and various oil-gas pipelines have very tempting prospect in actual production.
Summary of the invention
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of high temperature resistants for boiler water wall
Anti-scuff coating material and preparation method thereof, it is intended to solve that existing thermal spraying alloy coating material wearability is poor and adhesive force
Problem on the weak side.The coating material not only has high hardness, the excellent Erosive Properties of resistance to particulate matter, and to metal
Substrate has good bonding adhesive force.In addition, the construction method of the coating material is easy quickly, work can be significantly reduced
Journey cost.The present invention also provides a kind of preparation method of high temperature resistant antiwear coating material for boiler water wall, preparation sides
Method is simple, easy to promote and utilize.
To achieve the goals above, the technical solution adopted by the present invention is that: a kind of high temperature resistant for four main tubes of boiler is wear-resistant
Coating material is damaged, by mass percentage, including component:
The high temperature resistant bonding agent content is 20~50%, preferably 30~50%.If high temperature resistant bonding agent content is small
When 20%, there are two types of schemes for the adjustment of formulation for coating material: one, suitably reducing the dosage of nano material and abrasive aggregates on year-on-year basis, no
Foot point is substituted with decentralized medium, and solid part that this will cause coating is too low, and the viscosity and water of coating are very nearly the same, meeting when construction
Serious sagging phenomenon is formed, can also add thickener makes the viscosity of coating be suitble to construct, but since solid part of coating is too low,
Reach the coating layer thickness of requirement, it is necessary to which multiple tracks construction can make greatly increasing for project amount, cause to waste；Two, nano material and
The dosage of refractory aggregate still maintains zone of reasonableness, then since the content of film forming matter is very little, the in contrast PVC (face of coating
Expect volumetric concentration) it is higher, it be easy to cause coating powder phenomenon-tion occur, continuous film can not be effectively formed, in addition coating pair
The Adhering capacity of substrate also dies down, and is easy to substrate surface and falls off, and also just loses the wear-resisting functions of coating.If high temperature resistant binder
When content is greater than 50%, then since the amount of binder is on the high side, the amount for playing wear-resisting nano material and refractory aggregate is corresponding
It reducing, the wear-resisting property of coating reduces accordingly, so the additional amount of high temperature resistant binder is advisable for 20~50%, preferably 30
~50%.
Wherein, the high-temperature agglomerant be dihydric phosphate, alkali silicate, silica solution, Aluminum sol, zirconium colloidal sol,
At least one of titanium colloidal sol and glass powder with low melting point.
Further, the dihydric phosphate be aluminium dihydrogen phosphate, magnesium dihydrogen phosphate and zinc dihydrogen phosphate at least
It is a kind of.
Further, the alkali silicate is at least one of sodium metasilicate, potassium silicate and lithium metasilicate.
Further, the modulus (object of silica and alkali metal oxide of the sodium metasilicate, potassium silicate and lithium metasilicate
The ratio of the amount of matter) it is 2~6.
Further, the silica solution, Aluminum sol, zirconium colloidal sol, titanium colloidal sol solid content be 20wt%~50wt% into
One step, the silica solution, Aluminum sol, zirconium colloidal sol, titanium colloidal sol the partial sizes of sol particles be 5nm~500nm.
The nano material content is 1~40%, preferably 10~40%.The collocation of nano material and refractory aggregate uses
The introducing that the wear-resisting property of coating, especially nano material can not only be promoted can be obviously improved the Corrosion Protection of coating.If
When nano material content is less than 1%, the compactness of coating will be unable to be effectively guaranteed, that is, coating can not effectively stop
Corrosive medium and oxygen etc. enter coating and substrate interface, this can make coating material since corrosion and oxidation of substrate etc. are from substrate
Surface falls off, therefore the introduction volume of nano material cannot be too low；When nano material content is greater than 40%, due to the suction of nano-powder
The more general powder of oil mass is much higher, that is, the PVC (pigment volume concentration (PVC)) of coating is higher, also just and above-mentioned binder
Dosage situation on the low side is similar, and the easy dusting of film can not effectively form continuous film, in addition adhesion energy of the coating to substrate
Power also dies down, and is easy to substrate surface and falls off, and also just loses the wear-resisting and anti-corrosion function of coating.
Wherein, based on the mass percent of high temperature resistant antiwear coating material, the nano material includes in materials described below
At least one:
Wherein, the nano material, particle size are 10nm~500nm.
Further, the nano aluminium oxide is α type nano aluminium oxide.
Further, the nano zircite is the nano zircite of yttrium stable type.
The refractory aggregate content is 5~30%, preferably 10~25%.Since refractory aggregate is the inorganic non-of hard
Metal oxide, so the dosage of refractory aggregate directly affects the wear-resisting property of coating.In addition, refractory aggregate can also make coating
Heat resistance be obviously improved, and can make coating and metal base that there is good thermal matching by gradation mode.When resistance to
When the content of fiery aggregate is lower than 5%, since hard end is less, the wear resistance decrease of coating is insufficient；When the content of refractory aggregate
When greater than 30%, since the particle of refractory aggregate is larger, hole can increase in corresponding coating, and corrosive medium easily passes through coating
Reach coating and substrate interface causes coating to fall off from substrate surface to corrode substrate, loses anti-corrosion ability.
Wherein, based on the mass percent of high temperature resistant antiwear coating material, the refractory aggregate includes in materials described below
At least one:
Wherein, the refractory aggregate, particle size are 5 μm~100 μm.
Further, the magnesia is light magnesium oxide.
Further, the titanium oxide is Titanium Dioxide Rutile Top grade.
Further, the zirconium oxide is the zirconium oxide of yttrium stable type.
The present invention also provides a kind of preparation methods of high temperature resistant antiwear coating material for boiler water wall, including with
Lower step:
High temperature resistant binder (in addition to colloidal sol), refractory aggregate are proportionally added into decentralized medium, with linear velocity 1~
5m/s stirs 10~30min, obtains the first mixed material；
Nano material dispersion pulp and colloidal sol (or without colloidal sol) are proportionally added into the first mixed material, controllable temperature is used
High-pressure homogeneous dispersion machine is with 4 DEG C~80 DEG C of temperature, and pressure 150MPa~200MPa makes coating perfectly homogenousization, until granularity is less than 40
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging after μm.
Wherein, stir as conventional high-speed mixer, dispersion principle is to shear under normal pressure and collision, dispersion efficiency compared with
It is low, agglomerated particle can not be often fully opened, and when mixing speed is too fast, the temperature of slurry can be significantly raised；Controllable temperature is high
Pressure homogenous disperse machine makes slurry pass through slit, three kinds of generated shearing of abrupt release, hole, collision homogenous disperses using high pressure
Effect, while temperature is controlled, make the particulate matter being dispersed be not easy to reunite again.In addition, control temperature is conducive to binder
Stablize, it is well known that binder dihydric phosphate, alkali silicate and polysiloxanes, which pass through, obtains energy (typical case the most
It is to increase temperature) and the film-forming that dries out, when temperature is higher, binder shifts to an earlier date crosslinking curing and forms particulate matter,
It can not be re-used as film forming matter presence, so need to control temperature cannot be excessively high, i.e., mixing speed is unsuitable too fast.Furthermore common grinds
Mill equipment is minimum to the control of temperature to be also difficult to lower than 50 DEG C, can be generated and be significantly affected to binder when temperature is higher than 50 DEG C,
Therefore it should not be using common milling apparatus such as horizontal sand mill and basket type sand mill etc..
The present invention also provides a kind of construction methods of high temperature resistant antiwear coating material for boiler water wall, including with
Lower step:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) at 5 DEG C~35 DEG C of temperature, relative humidity 0%~70%, wind speed is no more than 2m/s for construction environment control, has no
The particles floats objects such as a large amount of dusts, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face in admission pressure 0.3MPa~0.6MPa, spray gun distance
20cm~30cm, at this point, spraying swath should be adjusted to 30cm~40cm；
(4) when spraying, make spray gun and coated face in 45 °~90 ° angles, keep spray gun constant at a distance from coated face
It is at the uniform velocity sprayed into and requires wet-film thickness；
(5) it is warming up to furnace using temperature after surface drying 30min~1h in above-mentioned construction environment.
Wherein, the degreasing and rust removal of ground guarantees that coating can be good at being adhered on ground, the attachment of the material of the coating
Mode is response type attachment, and ultimately form binder P-O-M metal substrate or binder Si-O-M metal substrate sticks structure,
If surface does not ensure to handle that binder can not adequately be reacted with substrate to Sa2.5 grades, adhesive force weakens therewith.
When environment temperature is lower even lower than 0 DEG C or relative humidity are higher than 70% when, coating can not surface drying or surface drying extremely
Slowly, it also just is difficult to form film.When substrate temperature is lower than 3 DEG C of dew-point temperature or less, ground may condense, in ground table
Moisture film is formed on face, influences the contact between coating material and ground, therefore film will lose attachment.A large amount of dust can be made
At film defects such as coating shrinkage cavity, crackings, the Corrosion Protection of film is greatly lowered, so there must not be a large amount of dust.
Wind speed in construction environment, which must not require, is higher than 2m/s, is since when wind speed is excessively high, coating material can do spray, so that coating material
Material can not form a film, or because of surface drying excessive velocities, coating material can not complete wetting ground, coating is without attachment.
The control of spray gun and spraying conditions is only the film that can obtain even uniform in construction, and construction efficiency is higher.
The control of surface drying process is also to enable film complete wetting ground and can be at continuous film after the completion of construction.Finally press boiler
Heating curve elevated cure, it is however generally that, the heating curve of boiler be it is comparable gentle, completely not to the coating material
It will cause negative effect, it should be noted that when being applied to other equipment or workpiece, the solidification process after surface drying should control heating
Curve must not generally be higher than 5 DEG C/min.
Compared with the existing technology, the high temperature resistant antiwear coating material for boiler water wall of the invention has following excellent
Point:
(1) high hardness makes to apply by the synergistic effect of the refractory aggregate of inorganic binder, nano material and hard
Layer has high hardness, that is, excellent particle-resistant object Erosive Properties.It is received by being introduced in conventional washcoat material
Rice material, so that coating material not only has high hardness, the excellent Erosive Properties of resistance to particulate matter, and to Metal Substrate
Material has good bonding adhesive force.
(2) attachment of good Adhesion property, inorganic binder and metal base is response type attachment, is formed after solidification viscous
The mixing adhering mode for tying agent R-O-M metal mold and hydrogen bond type enables coating still firmly to attach to substrate at high temperature
Surface.
(3) outstanding heat resistance, existing wear-resistant coating generally use organic resin as binder, and add high hard
The particle of degree promotes the wear-resisting property of coating, in contrast, in coating of the invention there is no the heat resistances such as organic matter compared with
Low component, therefore have very high and stable heat resistance.
(4) good Corrosion Protection, the introducing of nano material extraordinary can fill up the hole between refractory aggregate, screen
The infiltration of corrosive medium is covered, and all raw material used is inert substance, be difficult to react with corrosive medium, therefore should
Coating has good antiseptic property.
Detailed description of the invention
Fig. 1 is the high temperature resistant antiwear coating material preparation flow that the present invention is used for boiler water wall.
Specific embodiment
Substance provided by the present invention can be synthesized by marketable material or traditional chemical transform mode.Of the invention other
Aspect is obvious to those skilled in the art due to this disclosure.
Below in conjunction with specific embodiment, where specifically disclosing essence of the invention, but should not be understood as can to the present invention
Any restriction of practical range can have different change and modification on the basis of not departing from the connotation.Unless otherwise
Definition or explanation, all professions used herein and scientific words and meaning phase known to those skilled in the art
Together.Furthermore any method similar to or equal to what is recorded and material all can be applied in method of the invention.
Embodiment 1:
Raw material proportioning: biphosphate al binder 20.0g, nano aluminium oxide 20.0g, nano zircite 10.0g, fire resisting bone
Expect silicon carbide 5.0g, water 45.0g.
Preparation step: high-temperature agglomerant aluminium dihydrogen phosphate, refractory aggregate silicon carbide are proportionally added into part dispersion and are situated between
In matter water, 30min is stirred with linear velocity 1m/s, obtains the first mixed material；
Nano material nano aluminium oxide, nano zircite, remaining decentralized medium are proportionally added into the first mixed material
In, using the high-pressure homogeneous dispersion machine of controllable temperature with 4 DEG C of temperature, pressure 150MPa makes coating perfectly homogenousization, until granularity is less than 40 μ
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging after m.
Coating property: the coating density (25 DEG C, normal pressure) is 1.5g/cm3, viscosity (25 DEG C, -4 glasss of painting) 15s, solid content
It is 45%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 5 DEG C of temperature, relative humidity 0%, wind speed 1m/s, without the particles floats object such as a large amount of dusts,
And guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 20cm in admission pressure 0.3MPa, spray gun distance, this
When, spraying swath is adjusted to 30cm；
(4) when spraying, make spray gun and coated face in 45 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 30min, 300 DEG C are warming up to from room temperature by the heating rate of 2 DEG C/min
And 2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 9.2L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；0 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 9 times, coating is intact；550
DEG C to normal-temperature water thermal shock 9 times, coating is intact.
Embodiment 2:
Raw material proportioning: biphosphate al binder 20.0g, zinc dihydrogen phosphate binder 20.0g, nano zircite 5.0g,
Nanoscale Chromic Oxides 5.0g, refractory aggregate magnesia 30.0g, water 210.0g.
Preparation step: high-temperature agglomerant aluminium dihydrogen phosphate and zinc dihydrogen phosphate, refractory aggregate magnesia are proportionally added into
Into part decentralized medium water, 10min is stirred with linear velocity 2m/s, obtains the first mixed material；
Nano material nano zirconium oxide, Nanoscale Chromic Oxides, remaining decentralized medium are proportionally added into first
In mixed material, using the high-pressure homogeneous dispersion machine of controllable temperature with 4 DEG C of temperature, pressure 150MPa makes coating perfectly homogenousization, until grain
Filtering and discharging after spending less than 40 μm, is made the high temperature resistant antiwear coating material for boiler water wall.
Coating property: the coating density (25 DEG C, normal pressure) is 1.7g/cm3, viscosity (25 DEG C, -4 glasss of painting) 80s, solid content
It is 70%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 10 DEG C of temperature, relative humidity 10%, wind speed 0.5m/s, the drift of the particles such as no a large amount of dusts
Floating object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 20cm in admission pressure 0.4MPa, spray gun distance, this
When, spraying swath is adjusted to 30cm；
(4) when spraying, make spray gun and coated face in 60 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 30min, 300 DEG C are warming up to from room temperature by the heating rate of 3 DEG C/min
And 2h is kept the temperature, and about 100 μm of thickness of dry film, the high temperature resistant antiwear coating material for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 9.8L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 10 times, coating is intact；550
DEG C to normal-temperature water thermal shock 10 times, coating is intact.
Embodiment 3:
Raw material proportioning: biphosphate al binder 15.0g, zinc dihydrogen phosphate binder 15.0g, magnesium dihydrogen phosphate binder
15.0g, nanometer silicon carbide 40.0g, refractory aggregate titanium carbide and silicon carbide each 5.0g, water 5.0g.
Preparation step: by high-temperature agglomerant aluminium dihydrogen phosphate, zinc dihydrogen phosphate and magnesium dihydrogen phosphate, refractory aggregate titanium carbide
It is proportionally added into silicon carbide into part decentralized medium water, 20min is stirred with linear velocity 1m/s, obtains the first mixed material；
Nano material nanometer silicon carbide, remaining decentralized medium are proportionally added into the first mixed material, using controllable
For the high-pressure homogeneous dispersion machine of temperature with 10 DEG C of temperature, pressure 170MPa makes coating perfectly homogenousization, until granularity less than 40 μm after filter out
Material, is made the high temperature resistant antiwear coating material for boiler water wall.
Coating property: the coating density (25 DEG C, normal pressure) is 1.73g/cm3, viscosity (25 DEG C, -4 glasss of painting) 90s, admittedly contain
Amount is 72%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 15 DEG C of temperature, relative humidity 20%, wind speed 1.5m/s, the drift of the particles such as no a large amount of dusts
Floating object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 25cm in admission pressure 0.5MPa, spray gun distance, this
When, spraying swath is adjusted to 35cm；
(4) when spraying, make spray gun and coated face in 75 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 1h, 300 DEG C are warming up to simultaneously from room temperature by the heating rate of 4 DEG C/min
2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 9.8L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 8 times, coating is intact；550
DEG C to normal-temperature water thermal shock 8 times, coating is intact.
Embodiment 4:
Raw material proportioning: alkali metal silicate binder potassium silicate 40.0g, titanium sol adhesive 10.0g, nanometer silicon carbide
10.0g, nano aluminium oxide 10.0g, refractory aggregate chromium oxide 10.0g, water 20.0g.
Preparation step: high-temperature agglomerant potassium silicate, refractory aggregate chromium oxide are proportionally added into part decentralized medium water
In, 20min is stirred with linear velocity 5m/s, obtains the first mixed material；
Nano material nano aluminium oxide, nanometer silicon carbide, remaining decentralized medium are proportionally added into the first mixed material
In, using the high-pressure homogeneous dispersion machine of controllable temperature with 10 DEG C of temperature, pressure 170MPa makes coating perfectly homogenousization, until granularity is less than 40
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging after μm.
Coating property: the coating density (25 DEG C, normal pressure) is 1.36g/cm3, viscosity (25 DEG C, -4 glasss of painting) 78s, admittedly contain
Amount is 49%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 20 DEG C of temperature, relative humidity 30%, wind speed 2m/s, without particles floats such as a large amount of dusts
Object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 30cm in admission pressure 0.6MPa, spray gun distance, this
When, spraying swath is adjusted to 40cm；
(4) when spraying, make spray gun and coated face in 90 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 1h, 300 DEG C are warming up to simultaneously from room temperature by the heating rate of 5 DEG C/min
Keep the temperature 2h, about 100 μm of thickness of dry film, the high temperature resistant antiwear coating material for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 10.2L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；0 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 9 times, coating is intact；550
DEG C to normal-temperature water thermal shock 9 times, coating is intact.
Embodiment 5:
Raw material proportioning: alkali metal silicate binder sodium metasilicate and each 15.0g of lithium metasilicate, silica solution and aluminium sol adhesive
5.0g, nano aluminium oxide 5.0g, Nanoscale Chromic Oxides 5.0g, refractory aggregate zirconium oxide and chromium oxide each 15.0g, water 20.0g.
Preparation step: high-temperature agglomerant sodium metasilicate and lithium metasilicate, refractory aggregate zirconium oxide and chromium oxide are proportionally added into
Into part decentralized medium water, 20min is stirred with linear velocity 4m/s, obtains the first mixed material；
Nano material nano aluminium oxide, Nanoscale Chromic Oxides, remaining decentralized medium are proportionally added into the first mixing
In material, using the high-pressure homogeneous dispersion machine of controllable temperature with 30 DEG C of temperature, pressure 200MPa makes coating perfectly homogenousization, until granularity is small
The high temperature resistant antiwear coating material for boiler water wall is made in the filtering and discharging after 40 μm.
Coating property: the coating density (25 DEG C, normal pressure) is 1.27g/cm3, viscosity (25 DEG C, -4 glasss of painting) 66s, admittedly contain
Amount is 55%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 20 DEG C of temperature, relative humidity 70%, wind speed 2m/s, without particles floats such as a large amount of dusts
Object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 30cm in admission pressure 0.4MPa, spray gun distance, this
When, spraying swath is adjusted to 30cm；
(4) when spraying, make spray gun and coated face in 90 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 1h, 300 DEG C are warming up to simultaneously from room temperature by the heating rate of 5 DEG C/min
2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 10.6L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；0 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 10 times, coating is intact；550
DEG C to normal-temperature water thermal shock 10 times, coating is intact.
Embodiment 6:
Raw material proportioning: phosphate binders magnesium dihydrogen phosphate 20.0g, glass powder with low melting point 5.0g, nano aluminium oxide 5.0g,
Nano zircite 10.0g, refractory aggregate titanium oxide 8.0g, chromium oxide 12.0g, water 40.0g.
Preparation step: high-temperature agglomerant magnesium dihydrogen phosphate, refractory aggregate titanium oxide and chromium oxide are proportionally added into portion
Divide in decentralized medium water, 20min is stirred with linear velocity 4m/s, obtains the first mixed material；
Nano material nano aluminium oxide, nano zircite, remaining decentralized medium are proportionally added into the first mixed material
In, using the high-pressure homogeneous dispersion machine of controllable temperature with 10 DEG C of temperature, pressure 200MPa makes coating perfectly homogenousization, until granularity is less than 40
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging after μm.
Coating property: the coating density (25 DEG C, normal pressure) is 1.43g/cm3, viscosity (25 DEG C, -4 glasss of painting) 35s, admittedly contain
Amount is 50%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 35 DEG C of temperature, relative humidity 70%, wind speed 0.2m/s, the drift of the particles such as no a large amount of dusts
Floating object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 25cm in admission pressure 0.4MPa, spray gun distance, this
When, spraying swath is adjusted to 40cm；
(4) when spraying, make spray gun and coated face in 45 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 45min, 300 DEG C are warming up to from room temperature by the heating rate of 1 DEG C/min
And 2h is kept the temperature, about 80 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 9.1L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 9 times, coating is intact；550
DEG C to normal-temperature water thermal shock 9 times, coating is intact.
Embodiment 7:
Raw material proportioning: alkali metal silicate binder lithium metasilicate 40.0g, glass powder with low melting point 10.0g, nanometer silicon carbide
3.0g, Nanoscale Chromic Oxides 7.0g, refractory aggregate titanium oxide 30.0g, water 10.0g.
Preparation step: high-temperature agglomerant potassium silicate, refractory aggregate titanium oxide are proportionally added into part decentralized medium water
In, 10min is stirred with linear velocity 5m/s, obtains the first mixed material；
Nano material nanometer silicon carbide, Nanoscale Chromic Oxides, remaining decentralized medium are proportionally added into the first mixing
In material, using the high-pressure homogeneous dispersion machine of controllable temperature with 30 DEG C of temperature, pressure 200MPa makes coating perfectly homogenousization, until granularity is small
The high temperature resistant antiwear coating material for boiler water wall is made in the filtering and discharging after 40 μm.
Coating property: the coating density (25 DEG C, normal pressure) is 1.59g/cm3, viscosity (25 DEG C, -4 glasss of painting) 87s, admittedly contain
Amount is 66%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 30 DEG C of temperature, relative humidity 60%, wind speed 2m/s, without particles floats such as a large amount of dusts
Object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 20cm in admission pressure 0.5MPa, spray gun distance, this
When, spraying swath is adjusted to 40cm；
(4) when spraying, make spray gun and coated face in 45 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 1h, 300 DEG C are warming up to simultaneously from room temperature by the heating rate of 2 DEG C/min
2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 9.5L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 8 times, coating is intact；550
DEG C to normal-temperature water thermal shock 8 times, coating is intact.
Embodiment 8:
Raw material proportioning: phosphate binders zinc dihydrogen phosphate 30.0g, zirconium colloidal sol and each 10.0g of titanium colloidal sol, nanometer silicon carbide
20.0g, nano zircite 20.0g, refractory aggregate zirconium oxide 5.0g, water 5.0g.
Preparation step: high-temperature agglomerant zinc dihydrogen phosphate, refractory aggregate zirconium oxide are proportionally added into part dispersion and are situated between
In matter water, 30min is stirred with linear velocity 1m/s, obtains the first mixed material；
Nano material nanometer silicon carbide, nano zircite, remaining decentralized medium are proportionally added into the first mixed material
In, using the high-pressure homogeneous dispersion machine of controllable temperature with 25 DEG C of temperature, pressure 150MPa makes coating perfectly homogenousization, until granularity is less than 40
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging after μm.
Coating property: the coating density (25 DEG C, normal pressure) is 1.48g/cm3, viscosity (25 DEG C, -4 glasss of painting) 92s, admittedly contain
Amount is 66%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 35 DEG C of temperature, relative humidity 50%, wind speed 1m/s, without particles floats such as a large amount of dusts
Object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 25cm in admission pressure 0.6MPa, spray gun distance, this
When, spraying swath is adjusted to 40cm；
(4) when spraying, make spray gun and coated face in 60 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 20min, 300 DEG C are warming up to from room temperature by the heating rate of 4 DEG C/min
And 2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 10.8L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；0 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 10 times, coating is intact；550
DEG C to normal-temperature water thermal shock 10 times, coating is intact.
Embodiment 9:
Raw material proportioning: phosphate binders aluminium dihydrogen phosphate 20.0g, zirconium colloidal sol 10.0g, glass powder with low melting point 10.0g,
Nanoscale Chromic Oxides 1.0g, refractory aggregate zirconium oxide 20.0g, magnesia 10.0g, titanium oxide 10.0g, water 19.0g.
Preparation step: by high-temperature agglomerant aluminium dihydrogen phosphate, glass powder with low melting point, refractory aggregate zirconium oxide, magnesia, oxygen
Change titanium to be proportionally added into part decentralized medium water, 20min is stirred with linear velocity 3m/s, obtains the first mixed material；
Nano material Nanoscale Chromic Oxides, zirconium colloidal sol, remaining decentralized medium are proportionally added into the first mixed material
In, using the high-pressure homogeneous dispersion machine of controllable temperature with 25 DEG C of temperature, pressure 200MPa makes coating perfectly homogenousization, until granularity is less than 40
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging after μm.
Coating property: the coating density (25 DEG C, normal pressure) is 1.72g/cm3, viscosity (25 DEG C, -4 glasss of painting) 28s, admittedly contain
Amount is 64%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 20 DEG C of temperature, relative humidity 40%, wind speed 0.5m/s, the drift of the particles such as no a large amount of dusts
Floating object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 25cm in admission pressure 0.3MPa, spray gun distance, this
When, spraying swath is adjusted to 30cm；
(4) when spraying, make spray gun and coated face in 90 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 20min, 300 DEG C are warming up to from room temperature by the heating rate of 1 DEG C/min
And 2h is kept the temperature, about 90 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall
Film performance: film is made in aerial spraying, and measuring the film wearability is 9.9L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 10 times, coating is intact；550
DEG C to normal-temperature water thermal shock 10 times, coating is intact.
Embodiment 10:
Raw material proportioning: alkali metal silicate binder potassium silicate 30.0g, Aluminum sol 20.0g, glass powder with low melting point 5.0g,
Nano zircite 15.0g, refractory aggregate chromium oxide 30.0g, water 0.0g.
Preparation step: high-temperature agglomerant potassium silicate, glass powder with low melting point, refractory aggregate chromium oxide are proportionally added into portion
Divide in decentralized medium water, 30min is stirred with linear velocity 4m/s, obtains the first mixed material；
Nano material nano zircite, Aluminum sol, remaining decentralized medium are proportionally added into the first mixed material, made
With the high-pressure homogeneous dispersion machine of controllable temperature with 35 DEG C of temperature, pressure 200MPa makes coating perfectly homogenousization, until after granularity is less than 40 μm
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 30 DEG C of temperature, relative humidity 60%, wind speed 1m/s, without particles floats such as a large amount of dusts
Object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 25cm in admission pressure 0.5MPa, spray gun distance, this
When, spraying swath is adjusted to 40cm；
(4) when spraying, make spray gun and coated face in 90 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 20min, 300 DEG C are warming up to from room temperature by the heating rate of 1 DEG C/min
And 2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Coating property: the coating density (25 DEG C, normal pressure) is 1.55g/cm3, viscosity (25 DEG C, -4 glasss of painting) 46s, admittedly contain
Amount is 68%.
Film performance: film is made in aerial spraying, and measuring the film wearability is 10.3L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 10 times, coating is intact；550
DEG C to normal-temperature water thermal shock 10 times, coating is intact.
Below in conjunction with specific comparative example, where further specifically disclosing essence of the invention, but should not be understood as to this
Any restriction of invention enforceable range.
Comparative example 1:
Nano material is not added, remaining is identical with embodiment 1, wherein the amount decentralized medium for the nano material removed
Water substitution.
Raw material proportioning: biphosphate al binder 20.0g, refractory aggregate silicon carbide 5.0g, water 75.0g.
Preparation step: high-temperature agglomerant aluminium dihydrogen phosphate, refractory aggregate silicon carbide are proportionally added into decentralized medium water
In, 30min is stirred with linear velocity 1m/s, reuses the high-pressure homogeneous dispersion machine of controllable temperature with 4 DEG C of temperature, pressure 150MPa makes coating
Perfectly homogenousization, until granularity less than 40 μm after filtering and discharging, the high temperature resistant antiwear coating material for boiler water wall is made.
Coating property: the coating density (25 DEG C, normal pressure) is 1.12g/cm3, viscosity (25 DEG C, -4 glasss of painting) 12s, admittedly contain
Amount is 15%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 5 DEG C of temperature, relative humidity 0%, wind speed 1m/s, without the particles floats object such as a large amount of dusts,
And guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 20cm in admission pressure 0.3MPa, spray gun distance, this
When, spraying swath is adjusted to 30cm；
(4) when spraying, make spray gun and coated face in 45 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 30min, 300 DEG C are warming up to from room temperature by the heating rate of 2 DEG C/min
And 2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 9.2L/ μm；Heat-resisting 1000 DEG C of 1000h
Without abnormal phenomenon such as cracking, peelings；0 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 6 times, coating shedding；550
DEG C to normal-temperature water thermal shock 6 times, coating shedding.
Comparative example 2:
Nano material is not added, remaining is identical with embodiment 5, wherein the amount decentralized medium for the nano material removed
Water substitution.
Raw material proportioning: alkali metal silicate binder sodium metasilicate and each 15.0g of lithium metasilicate, silica solution and aluminium sol adhesive
Each 5.0g, refractory aggregate zirconium oxide and chromium oxide each 15.0g, water 30.0g.
Preparation step: high-temperature agglomerant sodium metasilicate and lithium metasilicate, refractory aggregate zirconium oxide and chromium oxide are proportionally added into
Into decentralized medium water, 20min is stirred with linear velocity 4m/s, the high-pressure homogeneous dispersion machine of controllable temperature is reused with 30 DEG C of temperature, presses
Power 200MPa makes coating perfectly homogenousization, until granularity less than 40 μm after filtering and discharging, the high temperature resistant for boiler water wall is made
Anti-scuff coating material.
Coating property: the coating density (25 DEG C, normal pressure) is 1.23g/cm3, viscosity (25 DEG C, -4 glasss of painting) 24s, admittedly contain
Amount is 45%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 20 DEG C of temperature, relative humidity 70%, wind speed 2m/s, without particles floats such as a large amount of dusts
Object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 30cm in admission pressure 0.4MPa, spray gun distance, this
When, spraying swath is adjusted to 30cm；
(4) when spraying, make spray gun and coated face in 90 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 1h, 300 DEG C are warming up to simultaneously from room temperature by the heating rate of 5 DEG C/min
2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 10.4L/ μm；Heat-resisting 1000 DEG C of 900h
Without abnormal phenomenon such as cracking, peelings；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 6 times, coating cracking falls off；
550 DEG C to normal-temperature water thermal shock 5 times, coating cracking falls off.
Comparative example 3:
Refractory aggregate is not added, remaining is identical with embodiment 8, wherein the amount decentralized medium of the refractory aggregate removed
Water substitution.
Raw material proportioning: phosphate binders zinc dihydrogen phosphate 30.0g, zirconium colloidal sol and each 10.0g of titanium colloidal sol, nanometer silicon carbide
20.0g, nano zircite 20.0g, water 10.0g.
Preparation step: high-temperature agglomerant zinc dihydrogen phosphate is proportionally added into part decentralized medium water, with linear velocity
1m/s stirs 30min, obtains the first mixed material；
Nano material nanometer silicon carbide, nano zircite, remaining decentralized medium are proportionally added into the first mixed material
In, using the high-pressure homogeneous dispersion machine of controllable temperature with 25 DEG C of temperature, pressure 150MPa makes coating perfectly homogenousization, until granularity is less than 40
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging after μm.
Coating property: the coating density (25 DEG C, normal pressure) is 1.42g/cm3, viscosity (25 DEG C, -4 glasss of painting) 86s, admittedly contain
Amount is 61%.
Film preparation condition:
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) construction environment control is at 35 DEG C of temperature, relative humidity 50%, wind speed 1m/s, without particles floats such as a large amount of dusts
Object, and guarantee that substrate temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 25cm in admission pressure 0.6MPa, spray gun distance, this
When, spraying swath is adjusted to 40cm；
(4) when spraying, make spray gun and coated face in 60 ° of angles, keep spray gun at a distance from coated face it is constant at the uniform velocity
It is sprayed into and requires about 150 μm of wet-film thickness；
(5) in above-mentioned construction environment after surface drying 20min, 300 DEG C are warming up to from room temperature by the heating rate of 4 DEG C/min
And 2h is kept the temperature, about 100 μm of thickness of dry film to get the high temperature resistant antiwear coating material arrived for boiler water wall.
Film performance: film is made in aerial spraying, and measuring the film wearability is 8.1L/ μm；Heat-resisting 1000 DEG C of 1000h without
The abnormal phenomenon such as cracking, peeling；1 grade of adhesive force (cross-hatching)；550 DEG C to normal temperature air thermal shock 2 times, coating cracking falls off；
550 DEG C to normal-temperature water thermal shock 2 times, coating cracking falls off.
Pass through the comparison of the above comparative example and embodiment, it can be clearly seen that, consumption of binder and type become anyway
Change, since binder used is the material for having high thermal stability, heat resistance has no significant change；When not adding
The Corrosion Protection of coating is decreased obviously when nano material, this is because the introducing of nano material makes the compactness of coating significantly
It is promoted, the promotion of coating compactness means promotion of the coating to the screening ability of corrosive medium, i.e. the antiseptic property of coating
It is promoted, it is because when not adding nano material that thermal shock resistance declines therewith, and the particulate matter for applying interlayer loses gradation, coating and base
The thermal matching of material declines, therefore anti-thermal shock declines therewith；When not adding refractory aggregate, anti-thermal shock, the wearability of coating are bright
Aobvious decline, this is because refractory aggregate is biggish hard particles, the hardness of coating accordingly declines when not adding, wearability with
Decline, correspondingly, the compactness of coating is on the contrary to be promoted, and thermal matching decline, thermal shock performance weakens.In short, nano material, fire resisting
Aggregate all has advantage performance in a certain respect, by the synergistic effect and perfect collocation between them, can just make coating
It can be optimal.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in protection model of the invention within the spirit and principle of invention
Within enclosing.
Claims (11)
1. a kind of high temperature resistant antiwear coating material for boiler water wall, which is characterized in that by mass percentage, including
Component:
。
2. the high temperature resistant antiwear coating material according to claim 1 for boiler water wall, which is characterized in that described
High-temperature agglomerant be dihydric phosphate, alkali silicate, silica solution, Aluminum sol, zirconium colloidal sol, titanium colloidal sol and low-melting glass
At least one of powder.
3. the high temperature resistant antiwear coating material according to claim 2 for boiler water wall, which is characterized in that described
Dihydric phosphate be at least one of aluminium dihydrogen phosphate, magnesium dihydrogen phosphate and zinc dihydrogen phosphate.
4. the high temperature resistant antiwear coating material according to claim 2 for boiler water wall, which is characterized in that described
Alkali silicate be at least one of sodium metasilicate, potassium silicate and lithium metasilicate.
5. the high-temperature resistant anti-corrosive coating material according to claim 4 for four main tubes of boiler, which is characterized in that the silicon
The modulus of sour sodium, potassium silicate and lithium metasilicate is 2~6.
6. the high temperature resistant antiwear coating material according to claim 2 for boiler water wall, which is characterized in that described
Silica solution, Aluminum sol, zirconium colloidal sol, titanium colloidal sol solid content be 20%~50wt%.
7. the high temperature resistant antiwear coating material according to claim 2 for boiler water wall, which is characterized in that described
Silica solution, Aluminum sol, zirconium colloidal sol, titanium colloidal sol sol particles partial size be 5nm~500nm.
8. the high temperature resistant antiwear coating material according to claim 1 for boiler water wall, which is characterized in that press matter
Percentages are measured, the nano material includes at least one of materials described below:
Wherein, the nano material, particle size are 10nm~500nm.
9. the high temperature resistant antiwear coating material according to claim 1 for boiler water wall, which is characterized in that press matter
Percentages are measured, the refractory aggregate includes at least one of materials described below:
Wherein, the refractory aggregate, particle size are 5 μm~100 μm.
10. a kind of system of the high temperature resistant antiwear coating material as described in any one of claims 1 to 9 for boiler water wall
Preparation Method, it is characterised in that the following steps are included:
High temperature resistant binder (in addition to colloidal sol), refractory aggregate are proportionally added into decentralized medium, stirred with 1~5m/s of linear velocity
10~30min is mixed, the first mixed material is obtained；
Nano material dispersion pulp and colloidal sol (or without colloidal sol) are proportionally added into the first mixed material, controllable temperature high pressure is used
For homogenous disperse machine with 4 DEG C~80 DEG C of temperature, pressure 150MPa~200MPa makes coating perfectly homogenousization, until after granularity is less than 40 μm
The high temperature resistant antiwear coating material for boiler water wall is made in filtering and discharging.
11. a kind of construction party of the high-temperature resistant anti-corrosive coating material as described in any one of claims 1 to 9 for four main tubes of boiler
Method, which is characterized in that the construction method comprising steps of
(1) ground is subjected to degreasing and rust removal processing, is allowed at least up to Sa2.5 grades；
(2) at 5 DEG C~35 DEG C of temperature, relative humidity 0%~70%, wind speed is no more than 2m/s, and guarantees bottom for construction environment control
Material temperature is higher than 3 DEG C of dew-point temperature or more；
(3) aerial spraying is used, spraying conditions control is coated face 20cm in admission pressure 0.3MPa~0.6MPa, spray gun distance
~30cm, at this point, spraying swath is adjusted to 30cm~40cm；
(4) when spraying, make spray gun and coated face in 45 °~90 ° angles, keep spray gun constant and even at a distance from coated face
Speed, which is sprayed into, requires wet-film thickness；
(5) it is warming up to furnace using temperature after surface drying 30min~1h in above-mentioned construction environment.
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| CN116285436A (en) * | 2023-01-19 | 2023-06-23 | 泰兴库本机电有限公司 | Preparation method of inorganic insulating wear-resistant coating |
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| CN111909547A (en) * | 2019-05-09 | 2020-11-10 | 中国科学院金属研究所 | Si element modified phosphate anticorrosive coating and preparation method thereof |
| CN110653134A (en) * | 2019-08-30 | 2020-01-07 | 华电青岛发电有限公司 | Anti-coking wear-resistant high-temperature sulfur corrosion-resistant nano ceramic coating and spraying method |
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| CN112063205A (en) * | 2020-09-22 | 2020-12-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | Inorganic corrosion-resistant coating and preparation method thereof |
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| CN114146884B (en) * | 2021-10-29 | 2024-03-19 | 佛山市天禄智能装备科技有限公司 | Thermal insulation composite film for rotary kiln waste heat utilization device and preparation method thereof |
| CN114605884A (en) * | 2022-03-14 | 2022-06-10 | 清大赛思迪新材料科技（北京）有限公司 | Preparation and sealing method of anti-corrosion sealing coating for garbage or biofuel boiler |
| CN115418121A (en) * | 2022-08-04 | 2022-12-02 | 武汉现代精工机械股份有限公司 | Iron-based water-based high-temperature-resistant insulating paint and preparation method and application thereof |
| CN115418121B (en) * | 2022-08-04 | 2023-12-29 | 武汉现代精工机械股份有限公司 | Iron-based water-based high-temperature-resistant insulating paint and preparation method and application thereof |
| CN115466529A (en) * | 2022-09-02 | 2022-12-13 | 郴州市泰益表面涂层技术有限公司 | Coating for water-cooled wall of thermal power boiler and preparation and use methods thereof |
| CN116285436A (en) * | 2023-01-19 | 2023-06-23 | 泰兴库本机电有限公司 | Preparation method of inorganic insulating wear-resistant coating |
| CN116218263A (en) * | 2023-03-16 | 2023-06-06 | 山西京玉发电有限责任公司 | Anti-wear coating for water-cooled wall of circulating fluidized bed boiler |
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