CN106630967A

CN106630967A - High-temperature radiation coating and preparation method thereof

Info

Publication number: CN106630967A
Application number: CN201611226569.5A
Authority: CN
Inventors: 白晓东; 周晓军; 岳坤; 赵刚; 任广宁; 韩建川; 李勇
Original assignee: Ningxia Orient Tantalum Industry Co Ltd
Current assignee: Ningxia Orient Tantalum Industry Co Ltd
Priority date: 2016-12-27
Filing date: 2016-12-27
Publication date: 2017-05-10

Abstract

The invention provides a high-temperature radiation coating, which is prepared from infrared radiation powder, a bonding agent, a suspension agent and a deflocculating agent; the infrared radiation powder is prepared from 20 to 40 weight percent of FeTiO3, 10 to 30 weight percent of Cr2O3, 5 to 10 weight percent of SiO2, 1 to 5 weight percent of MnO2, 10 to 20 weight percent of Co2O3, 1 to 5 weight percent of HfO2 and 5 to 10 weight percent of Nb2O3. The invention also discloses a preparation method of the high-temperature radiation coating. The prepared high-temperature radiation coating has the advantages that the temperature resistance is high; good infrared radiation performance is realized; the bonding intensity with a high-temperature furnace body is high; the heat vibration performance is good; in a use process, cracking and peeling cannot easily occur; the service life is long. Experiment results show that the prepared coating can resist the temperature of 1800 DEG C; the radiation rate is higher than or equal to 0.87; the vibration resistance at 1300 DEG C is greater than or equal to 6 times; the paint thickness is 0.3 to 2mm; the service life is greater than or equal to six years.

Description

A kind of hyperthermia radiation coating and preparation method thereof

Technical field

The present invention relates to technical field of refractory materials, more particularly to a kind of hyperthermia radiation coating and preparation method thereof.

Background technology

The energy consumption of China's heating kiln stove accounts for the 21% of national total energy consumption；According to national about 31 tons of marks of energy consumption statistic data in 2010 Calculating, thermal kiln furnace energy equivalent is 6.5 hundred million tons of mark coals to quasi- coal.Statistics shows, China thermal kiln furnace this conventional industries Energy-saving potential is huge, and the average thermal efficiency of kiln is only 30% or so；It is relatively low mainly due to kiln inwall emissivity so that Heat can not be effectively radiated in burner hearth, and the efficiency of heating surface is low, after painting is covered with high emissivity infrared radiant material, by radiation The thermal efficiency is improved, it is seen that the energy-conservation in the field has the potential to be tapped.It is both domestic and external it was verified that brushing on industrial furnace inwall infrared Radiation paint, is one of energy-saving simple method.In recent years, the refractory brick of refractory fibre and kiln, mullite Application Deng insulation material plays an obvious action to the radiation loss for reducing Industrial Stoves, but with the rising of temperature, Its emissivity ε rapidly declines, and when 1100 DEG C 0.35 or so is dropped to, be unfavorable for hyperthermia radiation conduct heat, and high emissivity coating with The rising of temperature and slightly rise, be conducive to high-temperature energy-conservation.Coating high temperature radiating coating material can not only reduce furnace body temperature in stove, subtract Few water power consumption, improves security, and can give burner hearth heat reflection, reduces heat energy loss.

A kind of high temp. resistance energy-saving inorganic coating and preparation side are disclosed in the Chinese patent of Application No. 93117046.X Method, the patent is with Cr₂O₃And Al₂O₃For base-material, using aluminum phosphate or phosphoric acid as binding agent, with mild-clay, sodium tripolyphosphate etc. The formula of preferred compositions, makes with high radiant rate, and the coating of High-temp. kiln interior wall can be protected again, for saving in High-temp. kiln The energy 15%, service life was up to more than 3 years.

The Chinese patent of Application No. 201010550307.0 discloses silicon oxide series high-temperature infrared radiation coating and its system Preparation Method, it includes following components；Fe₂O₃5～15, Al₂0₃10～20, MgO5～10, Cr₂O₃5～10, balance of SILICA FUME. The oxidation is the hot environment that infrared radiation coating can be applicable to more than 1200 DEG C, and its radiance is more than 0.9, and thermal shock resistance It is good, it is thermally matched functional with stove inner lining material.

A kind of heating furnace ceramic layer is disclosed in the Chinese patent of Application No. 201010502730.3, including with Lower component：Ceramic, inorganic bonding agent and thermal linear expansion coefficient conditioning agent.The ceramic coating of the invention has improvement spoke The features such as penetrating rate and thermal shock resistance, energy-efficient, prolongation furnace lining boiler tube service life, raising temperature homogeneity.

The coating that above-mentioned patent is previously mentioned adopts traditional forming method：One is overall compacting sintering shaping；Two is to add Plus a certain amount of binding agent, the mode for making coating is attached to the surface of matrix.But above two method is present in the application Weak point, such as compacting sintering forming technique, being limited by size cannot produce irregular large area monolithic article, and brush The emissivity of the materials such as zirconium oxide or zircon powder, chromium oxide in coating declines with the rising of temperature, when temperature exceedes When 1200 DEG C, emissivity is down to less than 0.85, therefore these infrared radiant materials are used alone can not be effectively increased its high temperature Under radianting capacity.

The content of the invention

Present invention solves the technical problem that be that a kind of hyperthermia radiation coating is provided, the hyperthermia radiation coating that the application is provided There is preferable infrared radiation property with stable performance at high temperature and in all band.

In view of this, this application provides a kind of hyperthermia radiation coating, by infra-red radiation powder, binding agent, suspending agent with Deflocculant is prepared；The infra-red radiation powder includes：

Preferably, the ratio of the quality of the infra-red radiation powder and the gross mass of the binding agent, suspending agent and deflocculant Example is (6～8)：(2～4).

Preferably, the mass ratio of the binding agent, suspending agent and deflocculant is (5～8)：(0.5～3)：(1～3).

Preferably, the binding agent is inorganic binder, and the inorganic binder includes Alumina gel, sodium metasilicate and di(2-ethylhexyl)phosphate Hydrogen aluminium, the mass ratio of the Alumina gel, sodium metasilicate and aluminium dihydrogen phosphate is (5～8)：(0.5～2)：(1～2).

Preferably, the suspending agent is one or two in sodium carboxymethylcellulose and polyethylene；The deflocculant choosing One or two from sodium tripolyphosphate and sodium metasilicate.

Preferably, the thickness of the hyperthermia radiation coating is 0.3～2mm.

Present invention also provides the preparation method of the hyperthermia radiation coating described in such scheme, comprises the following steps：

A), by FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃Mix after ball milling respectively, obtain powder Grain；

B), will the powder particle calcine after cool down, then crushed successively, fine grinding and screening, obtain infra-red radiation powder End；

C), the infrared radiation emitting powder is mixed with intermixture, obtains coating；The intermixture includes binding agent, suspends Agent and deflocculant；

D), the coating is sprayed at into non-metallic insulation material surface, obtains hyperthermia radiation coating.

Preferably, the granularity of the material after the ball milling is the granularity≤4mm of the material after the crushing below 400 mesh.

Preferably, the granularity of the infrared radiation emitting powder is below 400 mesh, wherein 300 mesh～400 purposes are 70%, 100 The granularity of mesh～300 mesh is 30%.

Preferably, the non-metallic insulation material is mullite brick, refractory brick or aluminum oxide.

This application provides a kind of hyperthermia radiation coating, it is by infrared radiation emitting powder, binding agent, suspending agent and deflocculant Prepare, its intermediate infrared radiation powder includes：FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃, wherein, FeTiO₃Pyrolytic is Fe₂O₃And Ti0₂, with Fe₂O₃、MnO₂、Co₂O₃Prepare Deng transition metal oxide Jing high temperature solid state reactions CoMn₂O₄The infra-red radiation powder of spinel structure, so as to get hyperthermia radiation coating exceed in normal direction all band radiance 0.87, the radiance in 8～14 μm of each arrowbands is more than 0.89；Meanwhile, infra-red radiation powder is made into coating with binding agent The coating all band emissivity for obtaining reaches more than 0.9, and coating and base material have good adhesive force and resistance to thermal shock stable Property.Test result indicate that, the present invention prepare coating can 1800 DEG C of heatproof, radiance >=0.87, shock resistance 1300 DEG C >=6 times, 0.3～2mm of paint thickness, service life >=6 year.

Description of the drawings

Fig. 1 is process chart prepared by hyperthermia radiation coating of the present invention.

Specific embodiment

For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, but It should be appreciated that these descriptions are simply to further illustrate the features and advantages of the present invention, rather than to the claims in the present invention Limit.

The embodiment of the invention discloses a kind of hyperthermia radiation coating, by infra-red radiation powder, binding agent, suspending agent and dissipate solidifying Agent is prepared；The infra-red radiation powder includes：

This application provides a kind of hyperthermia radiation coating, it is by infra-red radiation powder, binding agent, suspending agent and deflocculant system Standby to obtain, infra-red radiation powder therein includes：FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃, it is above-mentioned infrared Component in radiating powder occur after high temperature sintering structural transformation generate spinel structure, so as to get hyperthermia radiation coating Stable performance and there is good infrared radiation property in all band at high temperature.

In the present invention, prepared by infra-red radiation powder, suspending agent, binding agent and deflocculant in the high temperature coating, Its intermediate infrared radiation powder includes FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃.Wherein, FeTiO₃Can high temperature point Solve as Fe₂O₃With TiO₂；MnO₂Fusing point be 535 DEG C, its can decompose generation Mn₂O₃, discharge O₂, Mn₂O₃940 DEG C～1000 DEG C when be gradually transformed into Mn₃O₄O is produced simultaneously₂, Mn₃O₄With a spinel structure, its structure is conducive to and other metal ions Doping effect is produced, is conducive to improving the infrared radiation property of coating；MnO₂Same Co₂O₃Pyroreaction forms CoMn₂O₄Spinelle The infra-red radiation powder of structure；HfO₂Itself can improve radiance；Cr₂O₃And Fe₂0₃、TiO₂Main radiation wave band is in 2.5～12 μ There is high radiant rate in the range of m, therefore chemical doping is the effective way for improving the infrared shortwave area radiance of material；Nb₂O₃Its It is improved the ability of coating infra-red radiation.

Therefore, FeTiO₃、MnO₂And Co₂O₃Three kinds of components primarily form spinel structure；Cr₂O₃、HfO₂And Nb₂O₃Mainly Strengthen and improve emissivity；SiO₂It is the high temperature flux of each component.

FeTiO in the application₃Content be 20～40wt%, in certain embodiments, the FeTiO₃Content be 25～ 35wt%, in certain embodiments, the FeTiO₃Content be 28～32wt%；Example, the FeTiO₃Content be 25wt%, 28wt%, 30wt%, 32wt%, 33wt%, 35wt% or 38wt%.

The Cr₂O₃Content be 10～30wt%, in certain embodiments, the Cr₂O₃Content be 15～ 25wt%, specifically, the Cr₂O₃Content be 18wt%, 20wt%, 23wt%, 25wt% or 28wt%.

The SiO₂Content be 5～10wt%, in embodiment, the SiO₂Content be 5wt%, 8wt% or 10wt%.

The MnO₂Content be 1～5wt%, in embodiment, the MnO₂Content be 1wt%, 3wt% or 5wt%.

The Co₂O₃Content be 10wt%～20wt%, in embodiment, the Co₂O₃Content be 12～ 18wt%, specifically, the Co₂O₃Content be preferably 12wt%, 14wt%, 15wt%, 16wt% or 18wt%.

The HfO₂Content be 1～5wt%, in certain embodiments, the HfO₂Content be 1wt%, 3wt%, 4wt% or 5wt%.

The Nb₂O₃Content be 5～10wt%, in certain embodiments, the Nb₂O₃Content be 5wt%, 6wt%, 8wt%, 9wt% or 10wt%.

FeTiO in the application₃、MnO₂And Co₂O₃Three kinds of amounts of components within the above range, could form spinel structure, Octahedral interstices proportioning is again certain, therefore Cr in spinel structure₂O₃、HfO₂And Nb₂O₃It is also certain, and flux SiO₂For 5～10%, its consumption crosses conference and base material is had an impact.

In the hyperthermia radiation coating, the binding agent, suspending agent and deflocculant are well known to those skilled in the art Material；Example, the binding agent is preferably electrodeless binding agent, and it is Alumina gel, sodium metasilicate and aluminium dihydrogen phosphate, and the aluminium is molten The mass ratio of glue, sodium metasilicate and aluminium dihydrogen phosphate is (5～8)：(0.5～2)：(1～2), in embodiment, the Alumina gel, Sodium metasilicate is (6～7.5) with the mass ratio of aluminium dihydrogen phosphate：(1～1.5)：(1～1.5).In embodiment, the suspending agent For one or two in sodium carboxymethylcellulose and polyethylene, more specifically, the suspending agent is sodium carboxymethylcellulose. In embodiment, the deflocculant is one or two in sodium tripolyphosphate and sodium metasilicate, and more specifically, the deflocculant is preferred For sodium tripolyphosphate.The mass ratio of the binding agent, suspending agent and deflocculant is preferably (5～8)：(0.5～3)：(1～3)；More Specifically, the mass ratio of the binding agent, suspending agent and deflocculant is preferably (6～8)：(1～2)：(1～2).

Present invention also provides the preparation method of above-mentioned hyperthermia radiation coating, comprises the following steps：

A), by FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃Mix after ball milling respectively, obtain black powder Particle；

B), will the black powder particle calcine after cool down, then crushed successively, fine grinding and screening, obtain infrared spoke Penetrate powder；

C), the infrared radiation emitting powder is mixed with intermixture, obtains coating；The intermixture includes adhesive, suspends Agent and deflocculant；

As shown in figure 1, Fig. 1 is flow chart prepared by hyperthermia radiation coating of the present invention, and specifically, the system of the high temperature coating Standby process includes：Dispensing-sieve-ball milling-roasting-cooling-crushing-fine grinding-synthetic binder-synthesis mixer-powder with it is mixed Mixture mixing-stirring-coating-spraying.

According to the present invention, the mixing of raw material is carried out first, specifically, by FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂ With Nb₂O₃Mix after ball milling respectively, obtain black powder particle；In said process, the ball milling is known for those skilled in the art Ball milling, this application is had no particular limits；Powder after the ball milling preferably through sub-sieve, obtain the mesh of granularity 400 with Under material, then the material is mixed according to the ratio of above-mentioned raw materials, obtain powder particle.

The application then will powder particle obtained above calcine after cool down, then crushed successively, fine grinding and screening, obtain To infrared radiation emitting powder；The temperature of the calcining is preferably 1000～1500 DEG C, and the time is 1～3h.The time of the crushing is excellent Elect 2～5h as, the granularity≤4mm of the material obtained after crushing.The granularity of the infrared radiation emitting powder obtained after screening is preferred Below 400 mesh, wherein the content of 300 mesh～400 mesh is 70wt%, the content of 100 mesh～300 mesh is 30wt%.It is described to forge Burn, crush, fine grinding and screening are technological means well known to those skilled in the art, particularly not limited herein.

Then the infrared radiation emitting powder is mixed with intermixture, obtains coating；The intermixture includes binding agent, suspends Agent and deflocculant；Wherein binding agent, suspending agent and deflocculant be specifically described in detail in the above, herein not Repeated again.In order to ensure that raw material is sufficiently mixed, binding agent is preferably prepared for respectively, then carries out the mixing of raw material, specifically such as It is lower described：

Sodium phosphate and aluminium dihydrogen phosphate are added in Alumina gel, binding agent is obtained；

The binding agent is mixed with suspending agent, deflocculant, intermixture is obtained；

The intermixture is mixed with infra-red radiation powder, coating is obtained.

It is above-mentioned prepare binding agent during, the Alumina gel, sodium phosphate mix with aluminium dihydrogen phosphate after stir when Between be preferably 2h；The time that the binding agent, suspending agent are stirred after mixing with deflocculant is preferably 2h；The infrared radiation emitting powder 3h is preferably with the mixed mixing time of intermixture.

The coating is finally sprayed at non-metallic insulation material surface by the application, obtains hyperthermia radiation coating.The spray The means of painting are well known to those skilled in the art, are not particularly limited herein.Herein described coating can be in various High-temperature heater, petroleum chemical heating furnace and firing equipment all carry out reducing energy consumption, it is adaptable to be coated in oven inner liner surface, including resistance to Firebrick, refractory material, fibre module, the nonmetal basal body surfaces such as fibrofelt of making pottery containing zirconium.

Infra-red radiation powder prepared by the present invention generates stable metatitanic acid hercynite knot Jing after high-temperature roasting, grinding Structure, spraying property prepared by the structural material is stablized, and overcomes the shortcoming of traditional coating unstable properties at high temperature；Metatitanic acid Coating prepared by hercynite type infrared radiation emitting powder Jing sprayings all has good infrared radiation property in all band；Coating with The surface adhesion strength of high temperature furnace is high, peeling is difficult during use and is come off；In addition, Jing spray gun spraying coating process is than traditional The coating for obtaining is brushed by hand more uniform, coating layer thickness control is accurate, is adapted to large-area spraying.

Hyperthermia radiation coating heatproof prepared by the present invention is high, compensate for traditional brushing coating heatproof temperature it is low the characteristics of； Coating has good infrared radiation property；High with high-temperature furnace body bond strength, thermal shock performance is good, is difficult during use Cracking and peeling, long service life.Coating radiation paint can not only reduce furnace body temperature in stove, reduce water power consumption, improve Security, and heat energy loss can be reduced heat reflection to the crucible of burner hearth；Radiance is up to 0.87, and amount of energy saving reaches 4% ～20%, improve the thermal efficiency of heating furnace；Strong with basal body binding force, mechanical resistant is impacted and thermal shock, 1800 DEG C of highest heatproof, no The powder phenomenon-tion that comes off occurs；The spraying of radiation coating, reduces heating furnace outside wall temperature 10%～15%, improves heating furnace Interior temperature homogeneity 45%～55%, is heated evenly heated workpiece, and improve product quality plays protection and makees to heating furnace computer With, extend more than a times of its service life, with good wear-resisting, corrosion resistance, its shelf-life is up to more than 6 years.

For a further understanding of the present invention, the hyperthermia radiation coating provided the present invention with reference to embodiment and its preparation Method is described in detail, and protection scope of the present invention is not limited by the following examples.

Embodiment 1

A () is by raw material FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃Being respectively put into ball mill carries out ball milling, Material after ball mill grinding is carried out into sub-sieve, the material below the mesh of granularity 400 is obtained；

B () is by the material below 400 mesh according to FeTiO₃35%th, Cr₂O₃20%th, SiO₂10%th, MnO₂5%th, Co₂O₃15%th, HfO₂5%th, Nb₂O₃10% is mixed, and obtains black powder particle；

C () is put into the black powder particle for obtaining in pallet, send into be calcined in 1200 DEG C in calcining furnace and take out after 1h, from So cooling；

D the powder that step c) is obtained is put into pulverizer and is crushed 4 hours by (), obtain the bulky grain of initial particle size≤4mm Material；

E above-mentioned large granular materials are added in fine grinding pulverizer and carry out fine grinding by (), the material after fine grinding is put into screen-dividing machine In sieved, obtain the black powder material below the mesh of granularity 400, wherein 300 mesh～400 mesh particles are 70%, 100 mesh～ 300 mesh particles are 30%, finally give infra-red radiation black powder；

(f) synthesizing inorganic binding agent：Alumina gel is added in reactor, with sodium phosphate and aluminium dihydrogen phosphate Alumina gel is adjusted Acid-base value and viscosity, the weight ratio of three is 7.5:1.5:1, and stir 2 hours, obtain inorganic binder；

G () synthesizes intermixture：Inorganic binder is added in reactor, suspending agent sodium carboxymethylcellulose is added afterwards, dissipated Solidifying agent sodium tripolyphosphate, three's weight ratio is 6:2:2, and stir 2 hours, obtain inorganic binder, suspending agent and deflocculant Intermixture；

H infra-red radiation black powder that () prepares above-mentioned steps compares 8 with intermixture according to weight:2 are separately added into In reactor, stir 3 hours, form infrared radiation coating；

I () is put into infrared radiation coating in spray gun, in refractory brick heat storage above-mentioned infrared radiation coating A1 is coated, and is formed Infrared radiating coating radiance be 0.93, at 1300 DEG C heat storage capacity improve 29%.

Embodiment 2

B () is by the material below 400 mesh according to FeTiO₃28%th, Cr₂O₃30%th, SiO₂10%th, MnO₂5%th, Co₂O₃15%th, HfO₂3% and Nb₂O₃9% is mixed, and obtains black powder particle；

C () is put into black powder particle in pallet, send into be calcined in 1200 DEG C in calcining furnace and take out after 1h, naturally cold But；

E large granular materials are added in fine grinding pulverizer and carry out fine grinding crushing by (), the material after fine grinding is crushed is put into point Sieved in screen(ing) machine, obtained the black powder material below the mesh of granularity 400, wherein 300 mesh to 400 mesh particles are 70%, 100 Mesh to 300 mesh particles are 30%, finally give infra-red radiation black powder；

(f) synthesizing inorganic binding agent：Alumina gel is added in a kettle., and its acid is adjusted using sodium phosphate and aluminium dihydrogen phosphate Basicity and viscosity, the weight ratio of three is 7.5:1.5:1, and 2h is stirred, obtain inorganic binder；

G inorganic binder is added and add afterwards in reactor suspension sodium carboxymethylcellulose by (), deflocculant sodium tripolyphosphate, Three's weight ratio is 8:1:1, and stir 2 hours, obtain the intermixture of machine binding agent, suspending agent and deflocculant；

H infra-red radiation black powder particle that () prepares above-mentioned steps compares 7 with intermixture according to weight：3 difference In adding reactor, stir 3 hours, form infra-red radiation powder coating；

I () is put into infra-red radiation powder coating in plasma gun, in refractory brick heat storage above-mentioned infra-red radiation is coated Coating A2, the radiance of the infrared radiating coating of formation is 0.92, and at 800 DEG C, heat storage capacity improves 8%.

Embodiment 3

B () is by the material below 400 mesh according to FeTiO₃32%th, Cr₂O₃25%th, SiO₂5%th, MnO₂3%th, Co₂O₃20%th, HfO₂5%th, Nb₂O₃10% is mixed, and obtains black powder particle；

C () will obtain black powder particle and be put into pallet, send into be calcined in 1200 DEG C in calcining furnace and take out after 1h, natural Cooling；

D the powder that step c) is obtained is put into pulverizer and crushes 4h by (), obtain the bulky grain thing of initial particle size≤4mm Material；

(f) synthesizing inorganic binding agent：Alumina gel is added in a kettle., aluminium is adjusted using sodium phosphate and aluminium dihydrogen phosphate molten The acid-base value and viscosity of glue, the weight ratio of three is 7.5:1.5:1, and stir 2 hours, obtain inorganic binder；

G () adds inorganic binder in reactor, suspension sodium carboxymethylcellulose, deflocculant tripolyphosphate are added afterwards Sodium, three's weight ratio is 8:1:1, and stir 2 hours, obtain the intermixture of machine binding agent, suspending agent and deflocculant；

H infra-red radiation black powder particle that () prepares above-mentioned steps compares 6 with intermixture according to weight:4 difference In adding reactor, stir 3 hours, form infra-red radiation powder coating；

I () is put into infra-red radiation powder coating in spray gun, in fire resisting silica brick heat storage above-mentioned infrared radiation coating is coated A3, the radiance of the infrared radiating coating of formation is 0.92, and at 1400 DEG C, heat storage capacity improves 26%.

Embodiment 4

A () is by raw material FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃Being respectively put into ball mill carries out ball milling, Material after fine grinding is crushed carries out sub-sieve, obtains the material below the mesh of granularity 400；

B () is by the material below 400 mesh according to FeTiO₃38%th, Cr₂O₃18%th, SiO₂8%th, MnO₂5%th, Co₂O₃18%th, HfO₂5%th, Nb₂O₃8% is mixed, and obtains black powder particle；

C () will obtain black powder particle and be put into pallet, send into be calcined with 1200 DEG C in calcining furnace and take out after 1h, natural Cooling；

D the powder that step c) is obtained is put into pulverizer and is crushed 4 hours by (), obtain initial particle size≤4mm bulky grain things Material；

(f) synthesizing inorganic binding agent：Alumina gel is added in reactor, its soda acid is adjusted using sodium phosphate and aluminium dihydrogen phosphate Degree and viscosity, the weight ratio of three is 7.5:1.5:1, and stir 2 hours, obtain inorganic bond；

H infra-red radiation black powder that () prepares above-mentioned steps compares 8 with intermixture according to weight：2 are separately added into In reactor, stir 3 hours, form infra-red radiation powder coating；

I () is put into infra-red radiation powder coating in spray gun, in fire resisting silica brick heat storage above-mentioned infrared radiation coating is coated A4, the radiance of the infrared radiating coating of formation is 0.93, and at 1350 DEG C, heat storage capacity improves 27%.

Performance test

Resistance to thermal shock stability：It is respectively coated with the refractory brick or mullite heat insulation material surface of 60mm × 100mm × 20mm Infrared radiation coating A1～the A4 of embodiment 1～4, coating thickness is 0.3～2mm, and coating is positioned at room temperature after being dried and adds 1300 DEG C of holding 30min are risen in hot stove, then rapid taking-up is cooled to room temperature.Continuous circulation more than 6 times, coating are operated above The equal ＜ 5% of the area that comes off, thus illustrates, the coating that infrared radiation coating prepared by the present invention is formed has good anti-thermal shock Property.

High-temperature oxidation resistance is tested：In the refractory brick or mullite heat insulation material surface point of 60mm × 100mm × 20mm Not Tu Fu embodiment 1～4 infrared radiation coating A1～A4, coating thickness be 0.3～2mm, coating be dried after put at room temperature It is placed in heating furnace and rises to 1800 DEG C of holding 30min, natural cooling after taking-up, coating surface no cracking line, surface is intact, color Uniformly, the equal ＜ 5% of coating shedding area, illustrates that the high temperature that the coating that the infrared radiation coating of present invention preparation is formed has had resists Oxidation susceptibility.

Equipment in above example adopts equipment as shown in table 1,

Equipment list in the embodiment of table 1

Sequence number	Device name	Model	Producer
				1	Light-duty tumbling ball mill	QM-25L	Create tumbling ball mill in Changsha day
2	Calcining furnace	DC-B	Beijing original creation science and technology
				3	Atomizer mill	GQM-25	Create tumbling ball mill in Changsha day
4	Spray gun	YC-90	Taiwan unit unicorn

The explanation of above example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that right For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.

The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention. Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The most wide scope for causing.

Claims

1. a kind of hyperthermia radiation coating, is prepared by infra-red radiation powder, binding agent, suspending agent and deflocculant；Its feature exists In the infra-red radiation powder includes：

2. hyperthermia radiation coating according to claim 1, it is characterised in that the quality of the infra-red radiation powder with it is described The ratio of the gross mass of binding agent, suspending agent and deflocculant is (6～8): (2～4).

3. hyperthermia radiation coating according to claim 1, it is characterised in that the binding agent, suspending agent and deflocculant Mass ratio is (5～8): (0.5～3): (1～3).

4. hyperthermia radiation coating according to claim 1, it is characterised in that the binding agent is inorganic binder, described Inorganic binder includes Alumina gel, sodium metasilicate and aluminium dihydrogen phosphate, the mass ratio of the Alumina gel, sodium metasilicate and aluminium dihydrogen phosphate For (5～8): (0.5～2): (1～2).

5. hyperthermia radiation coating according to claim 1, it is characterised in that the suspending agent be sodium carboxymethylcellulose and One or two in polyethylene；The deflocculant is selected from one or two in sodium tripolyphosphate and sodium metasilicate.

6. hyperthermia radiation coating according to claim 1, it is characterised in that the thickness of the hyperthermia radiation coating is 0.3 ～2mm.

7. the preparation method of the hyperthermia radiation coating described in claim 1, it is characterised in that comprise the following steps：

A), by FeTiO₃、Cr₂O₃、SiO₂、MnO₂、Co₂O₃、HfO₂With Nb₂O₃Mix after ball milling respectively, obtain powder particle；

B), will the powder particle calcine after cool down, then crushed successively, fine grinding and screening, obtain infrared radiation emitting powder；

C), the infrared radiation emitting powder is mixed with intermixture, obtains coating；The intermixture include binding agent, suspending agent with Deflocculant；

8. preparation method according to claim 7, it is characterised in that the granularity of the material after the ball milling be 400 mesh with Under, the granularity≤4mm of the material after the crushing.

9. preparation method according to claim 7, it is characterised in that the granularity of the infrared radiation emitting powder be 400 mesh with Under, wherein 300 mesh～400 purposes are 70%, the granularity of 100 mesh～300 mesh is 30%.

10. preparation method according to claim 7, it is characterised in that the non-metallic insulation material is mullite brick, resistance to Firebrick or aluminum oxide.