CN113045924A - Novel reflective heat-insulation powder and preparation method thereof - Google Patents
Novel reflective heat-insulation powder and preparation method thereof Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 189
- 238000009413 insulation Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 73
- 239000000919 ceramic Substances 0.000 claims description 37
- 239000004408 titanium dioxide Substances 0.000 claims description 31
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- 150000004706 metal oxides Chemical class 0.000 claims description 17
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- 239000010703 silicon Substances 0.000 claims description 16
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- 239000003960 organic solvent Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
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- 239000011812 mixed powder Substances 0.000 claims description 6
- UPWOEMHINGJHOB-UHFFFAOYSA-N oxo(oxocobaltiooxy)cobalt Chemical compound O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 claims description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 5
- 238000000889 atomisation Methods 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000010344 co-firing Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005261 decarburization Methods 0.000 claims description 5
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 claims description 5
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 5
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 229910000457 iridium oxide Inorganic materials 0.000 claims description 5
- 229910052863 mullite Inorganic materials 0.000 claims description 5
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
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- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- NFMWFGXCDDYTEG-UHFFFAOYSA-N trimagnesium;diborate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]B([O-])[O-].[O-]B([O-])[O-] NFMWFGXCDDYTEG-UHFFFAOYSA-N 0.000 claims description 3
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 2
- NUKZAGXMHTUAFE-UHFFFAOYSA-N hexanoic acid methyl ester Natural products CCCCCC(=O)OC NUKZAGXMHTUAFE-UHFFFAOYSA-N 0.000 claims description 2
- 229920002050 silicone resin Polymers 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000008204 material by function Substances 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract description 2
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 239000004005 microsphere Substances 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
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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
- C09D5/004—Reflecting paints; Signal paints
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses novel reflective heat-insulation powder and a preparation method thereof. The novel reflective heat-insulating powder disclosed by the invention is an inner hole outer coating type closed material formed by compounding and co-sintering multiple functional materials, belongs to a multifunctional ceramic material, and has outstanding wear resistance, weather resistance and acid and alkali resistance.
Description
Technical Field
The invention relates to the technical field of paint production, in particular to novel reflective heat-insulating powder and a preparation method thereof.
Background
The reflective heat-insulation functional auxiliary agent plays a significant role in a coating system. Particularly, the national great force in recent years promotes the policies related to industrial energy conservation, emission reduction and environmental protection. The reflective insulation mainly comprises two parts, namely reflection and insulation, wherein the core of the reflection part is the reflectivity of material substances to sunlight, and the core of the insulation part is the thermal insulation and shielding of the material to the heat energy generated in the sunlight. The traditional reflective materials such as titanium dioxide, barium sulfate and other pigments and fillers have high sunlight reflecting energy value, but relatively poor heat insulation performance. The traditional heat insulating materials such as hollow glass microspheres, coal ash microspheres, hollow ceramic microspheres and the like have insufficient light reflection capability.
Disclosure of Invention
The invention aims to provide novel reflective heat-insulating powder which is characterized in that a plurality of functional materials are compounded and co-sintered to form an inner hole outer coating type closed material, so that the material has good reflective and heat-insulating properties.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the novel reflective heat-insulation powder is characterized by comprising powder A and powder B, wherein the powder A contains the following components: 33-71 parts of ceramic powder, 5-15 parts of washing kaolin, 8-13 parts of wax powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 5-15 parts of metal oxide powder, 1-2 parts of sericite powder, 2-5 parts of organic silicon resin powder and 1-2 parts of whisker;
the powder B contains the following components: 20-30 parts of ceramic powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 2-5 parts of metal oxide powder and 1-2 parts of sericite powder;
the novel reflective heat insulation powder comprises an inner layer structure and an outer layer structure, wherein the outer layer structure wraps the inner layer structure, and the inner layer structure is composed of a plurality of pores.
Further, the ceramic powder is one or more of iridium oxide type zirconium dioxide ceramic powder, alpha-alumina ceramic powder, silicon nitride ceramic powder and boron nitride ceramic powder.
Further, the wax powder is one or more of solid paraffin, PE wax and Fischer-Tropsch wax.
Furthermore, the particle size of the quartz powder is larger than or equal to 3000 meshes.
Further, the titanium dioxide is rutile type titanium dioxide or anatase type titanium dioxide.
Further, the metal oxide is MgO, ZnO or Fe2O3、MnO2、Co2O3、CuO、SnO2、Sb2O3One or more of (a).
Furthermore, the R/Si value of the organic silicon resin is between 0.8 and 2.0.
Further, the whisker is one or more of mullite whisker, potassium titanate whisker, magnesium borate whisker and aluminum borate whisker.
Further, the organic solvent is one or more of toluene, cyclohexane, propylene glycol methyl ether acetate, ethanol, N-dimethylformamide, methyl ethyl ketone, acetone, methyl ethyl ketone and butyl acetate.
The invention also provides a preparation method of the novel reflective heat-insulating powder, which comprises the following steps:
s1: adding 33-71 parts of ceramic powder, 5-15 parts of washing kaolin, 8-13 parts of wax powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 5-15 parts of metal oxide powder, 1-2 parts of sericite powder, 2-5 parts of organic silicon resin powder and 1-2 parts of crystal whisker into a three-dimensional mixer, mixing for 3 hours, and then transferring the mixture into an internal mixer to heat to 90-110 ℃, mixing and internally mixing for 2 hours, taking out the internally mixed mixture, putting the mixture into a granulator, adjusting the granulation temperature to 100-110 ℃, adjusting the extrusion speed to enable the particle length to be 0.2-0.5 cm, putting the mixture into a high-temperature furnace, programming to heat to 250-300 ℃, keeping the temperature for 30 minutes, continuously introducing pure nitrogen, heating to 1300 ℃ for decarburization and purification for 60 minutes, finally co-firing for 2 hours at 1800-2600 ℃, crushing after cooling, putting the mixture into a dry powder ball mill for grinding and refining until the average particle size is 3um, and obtaining the powder A.
S2: mixing and grinding 20-30 parts of ceramic powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 2-5 parts of metal oxide powder and 1-2 parts of sericite powder for 1 hour to obtain mixed powder B;
s3: adding 20-30 parts of organic silicon resin powder into 100 parts of organic solvent for dissolving, adding 18-50 parts of powder A and mixed powder B, stirring and dispersing uniformly, and vacuumizing to remove part of solvent;
s4: transferring the solvent obtained in the step S3 to a spray dryer for atomization and powder making treatment, transferring the powder to a high-temperature furnace, curing for 2 hours at the temperature of 250-300 ℃, and heating to 2600 ℃ for sintering;
s5: and after the powder is cooled to room temperature, adding water for wet ball milling, grinding the powder until the average particle size is 3 mu m, filtering and drying to obtain the novel reflective heat-insulating powder.
The novel reflective heat-insulating powder disclosed by the invention is an inner hole outer coating type closed material formed by compounding and co-sintering multiple functional materials, belongs to a multifunctional ceramic material, and has outstanding wear resistance, weather resistance and acid and alkali resistance.
Drawings
FIG. 1 is a schematic structural diagram of a novel reflective insulation powder according to the present invention;
in the figure, 1 is an outer layer structure, and 2 is an inner layer structure.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, a novel reflective insulation powder includes a powder a and a powder B, where the powder a contains the following components: 33-71 parts of ceramic powder, 5-15 parts of washing kaolin, 8-13 parts of wax powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 5-15 parts of metal oxide powder, 1-2 parts of sericite powder, 2-5 parts of organic silicon resin powder and 1-2 parts of whisker;
the powder B contains the following components: 20-30 parts of ceramic powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 2-5 parts of metal oxide powder and 1-2 parts of sericite powder;
the novel reflective heat insulation powder comprises an inner layer structure 2 and an outer layer structure 1, wherein the inner layer structure 2 is wrapped by the outer layer structure 1, and the inner layer structure 2 is composed of a plurality of pores.
The invention also provides a preparation method of the novel reflective heat-insulating powder, which comprises the following steps:
s1: adding 33-71 parts of ceramic powder, 5-15 parts of washing kaolin, 8-13 parts of wax powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 5-15 parts of metal oxide powder, 1-2 parts of sericite powder, 2-5 parts of organic silicon resin powder and 1-2 parts of crystal whisker into a three-dimensional mixer, mixing for 3 hours, and then transferring the mixture into an internal mixer to heat to 90-110 ℃, mixing and internally mixing for 2 hours, taking out the internally mixed mixture, putting the mixture into a granulator, adjusting the granulation temperature to 100-110 ℃, adjusting the extrusion speed to enable the particle length to be 0.2-0.5 cm, putting the mixture into a high-temperature furnace, programming to heat to 250-300 ℃, keeping the temperature for 30 minutes, continuously introducing pure nitrogen, heating to 1300 ℃ for decarburization and purification for 60 minutes, finally co-firing for 2 hours at 1800-2600 ℃, crushing after cooling, putting the mixture into a dry powder ball mill for grinding and refining until the average particle size is 3um, and obtaining the powder A.
S2: mixing and grinding 20-30 parts of ceramic powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 2-5 parts of metal oxide powder and 1-2 parts of sericite powder for 1 hour to obtain mixed powder B;
s3: adding 20-30 parts of organic silicon resin powder into 100 parts of organic solvent for dissolving, adding 18-50 parts of powder A and mixed powder B, stirring and dispersing uniformly, and vacuumizing to remove part of solvent;
s4: transferring the solvent obtained in the step S3 to a spray dryer for atomization and powder making treatment, transferring the powder to a high-temperature furnace, curing for 2 hours at the temperature of 250-300 ℃, and heating to 2600 ℃ for sintering;
s5: and after the powder is cooled to room temperature, adding water for wet ball milling, grinding the powder until the average particle size is 3 mu m, filtering and drying to obtain the novel reflective heat-insulating powder.
Wherein, the ceramic body can be one or a mixture of several of iridium oxide type zirconium dioxide ceramic powder, alpha-alumina ceramic powder, silicon nitride ceramic powder and boron nitride ceramic powder.
The grain size of the ceramic powder is selected from ultra-fine powder with the grain size of more than 5000 meshes, and nano-scale powder is preferred.
The wax powder can be one or more of solid paraffin, PE wax and Fischer-Tropsch wax; the number of the solid paraffin powder plate is selected from 58, 60, 62 and 64; the softening freezing point of the PE wax is more than or equal to 58 ℃.
The quartz powder has a particle size of 3000 meshes or more and a purity of 99% or more.
The titanium dioxide is selected from rutile type titanium dioxide or anatase type titanium dioxide, preferably rutile type titanium dioxide, and more preferably titanium dioxide without surface treatment; or the titanium dioxide can be selected from precipitation method titanium dioxide or chlorination method titanium dioxide, and preferably chlorination method titanium dioxide.
The metal oxide can be one or a mixture of more of MgO, ZnO, Fe2O3, MnO2, Co2O3, CuO, SnO2 and Sb2O 3;
the particle size of the sericite powder is preferably 3000 meshes; the organic silicon resin is selected from resin with the R/Si value of 0.8-2.0, and more preferably from silicon resin with the R/Si value of 1.0-1.5;
the whisker can be one or more of mullite whisker, potassium titanate whisker, magnesium borate whisker and aluminum borate whisker;
the organic solvent can be one or more selected from toluene, cyclohexane, propylene glycol methyl ether acetate, ethanol, N-dimethylformamide, methyl ethyl ketone, acetone, butanone and butyl acetate.
Example 1
Firstly, 40 parts of iridium oxide type zirconium dioxide ceramic powder, 2 parts of alpha-alumina ceramic powder, 1 part of boron nitride ceramic powder, 10 parts of water-washed kaolin, 4 parts of No. 56 paraffin wax powder, 4 parts of SX-100 Fischer-Tropsch wax powder, 2 parts of H1 Fischer-Tropsch wax powder, 3 parts of quartz powder, 10 parts of rutile type titanium dioxide, 5 parts of MgO, 5 parts of ZnO, 5 parts of Fe2O32 parts of Sb2O31 parts of SnO23 parts, 1 part of sericite powder, RSN-02492 parts of silicon resin, Silres-6102 parts of silicon resin, 1 part of mullite whisker and 1 part of potassium titanate whisker are sequentially added into a three-dimensional mixer to be mixed for 3 hours, then the mixture is transferred into an internal mixer to be heated to 100 ℃ to be mixed and internally mixed for 2 hours, the internally mixed mixture is taken out, the mixture is put into a granulator, the granulation temperature is adjusted to 105 ℃, the extrusion speed is adjusted to enable the particle length to be 0.2-0.5 cm, the particles are put into a sintering furnace to be sintered, gasifying and discharging paraffin for 60 minutes, heating to 250 ℃, keeping for 30 minutes, heating to 1300 ℃, performing decarburization and purification for 60 minutes, finally heating to 2000 ℃, co-firing for 2 hours, cooling, crushing, putting into a dry powder ball mill, grinding and refining until the average particle size is 3um, and preparing powder A; and secondly, adding ceramic powder, quartz powder, rutile type titanium dioxide powder, metal oxide powder, mica powder, organic silicon resin powder and powder A into an organic solvent according to a proportion, uniformly stirring and dispersing, vacuumizing to remove part of the solvent, transferring to a spray dryer for atomization powder-making treatment, and transferring to a high-temperature furnace for curing for 2 hours at 250 ℃. And after the powder is cooled to room temperature, adding water for wet ball milling, grinding the powder until the average particle size is 3um, filtering and drying. The Mohs hardness of the powder is 4.5, the whiteness is 90%, the near-infrared reflectivity is 80%, and the thermal conductivity coefficient is 0.025.
Example 2
Firstly, putting 44 parts of iridium oxide type zirconium dioxide ceramic powder, 2 parts of alpha-alumina ceramic powder, 1 part of aluminum nitride ceramic powder, 10 parts of water-washed kaolin, 4 parts of No. 56 paraffin wax powder, 4 parts of SX-105 Fischer-Tropsch wax powder, 2 parts of SP-112 Fischer-Tropsch wax powder, 3 parts of quartz powder, 10 parts of rutile titanium dioxide, 5 parts of MgO, 5 parts of ZnO, 5 parts of Fe2O32, 10 parts of Co2O31 parts of sericite powder, 1 part of Dow Corning organosilicon resin RSN-02492 parts, 1 part of Wake organosilicon resin Silres-6032 parts, 1 part of mullite whisker and 1 part of potassium titanate whisker into a three-dimensional mixer in sequence, mixing for 3 hours, then transferring into an internal mixer to heat up to 100 ℃, mixing and internally mixing for 2 hours, taking out the internally mixed mixture, putting into a granulator, adjusting the granulation temperature to 105 ℃, adjusting the extrusion speed to enable the particle length to be 0.2-0.5 cm-sized particles, putting the particles into a sintering furnace to sinter under the condition of, heating the paraffin for 60 minutes at 200 ℃, discharging the paraffin by gasifying, heating to 250 ℃, keeping for 30 minutes, heating to 1300 ℃, performing decarburization purification for 60 minutes, finally heating to 2000 ℃, co-firing for 2 hours, cooling, crushing, putting into a dry powder ball mill, grinding and refining to obtain powder A with the average particle size of 3 um; and secondly, adding ceramic powder, quartz powder, rutile type titanium dioxide powder, metal oxide powder, mica powder, organic silicon resin powder and powder A into an organic solvent according to a proportion, uniformly stirring and dispersing, vacuumizing to remove part of the solvent, transferring to a spray dryer for atomization powder-making treatment, and transferring to a high-temperature furnace for curing for 2 hours at 250 ℃. And after the powder is cooled to room temperature, adding water for wet ball milling, grinding the powder until the average particle size is 3um, filtering and drying. The Mohs hardness of the powder is 4.5, the whiteness is 90%, the near-infrared reflectivity is 75%, and the thermal conductivity coefficient is 0.025.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (10)
1. The novel reflective heat-insulation powder is characterized by comprising powder A and powder B, wherein the powder A contains the following components: 33-71 parts of ceramic powder, 5-15 parts of washing kaolin, 8-13 parts of wax powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 5-15 parts of metal oxide powder, 1-2 parts of sericite powder, 2-5 parts of organic silicon resin powder and 1-2 parts of whisker;
the powder B contains the following components: 20-30 parts of ceramic powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 2-5 parts of metal oxide powder and 1-2 parts of sericite powder;
the novel reflective heat insulation powder comprises an inner layer structure and an outer layer structure, wherein the outer layer structure wraps the inner layer structure, and the inner layer structure is composed of a plurality of pores.
2. The novel reflective insulation powder as claimed in claim 1, wherein the ceramic powder is one or more of iridium oxide type zirconium dioxide ceramic powder, α -alumina ceramic powder, silicon nitride ceramic powder and boron nitride ceramic powder.
3. The novel reflective insulation powder as claimed in claim 1, wherein the wax powder is one or more of paraffin wax, PE wax and Fischer-Tropsch wax.
4. The novel reflective heat-insulating powder as claimed in claim 1, wherein the particle size of the quartz powder is greater than or equal to 3000 mesh.
5. A novel reflective heat insulation powder as claimed in claim 1, wherein the titanium dioxide is rutile type titanium dioxide or anatase type titanium dioxide.
6. The novel reflective heat-insulating powder as claimed in claim 1, wherein the metal oxide is MgO, ZnO or Fe2O3、MnO2、Co2O3、CuO、SnO2、Sb2O3One or more of (a).
7. The novel reflective heat-insulating powder as claimed in claim 1, wherein the R/Si value of the silicone resin is between 0.8 and 2.0.
8. The novel reflective insulation powder according to claim 1, wherein the whiskers are one or more of mullite whiskers, potassium titanate whiskers, magnesium borate whiskers and aluminum borate whiskers.
9. The novel reflective heat-insulating powder as claimed in claim 1, wherein the organic solvent is one or more of toluene, cyclohexane, propylene glycol methyl ether acetate, ethanol, N-dimethylformamide, methyl ethyl ketone, acetone, methyl ethyl ketone, and butyl acetate.
10. The preparation method of the novel reflective heat-insulating powder is characterized by comprising the following steps of:
s1: adding 33-71 parts of ceramic powder, 5-15 parts of washing kaolin, 8-13 parts of wax powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 5-15 parts of metal oxide powder, 1-2 parts of sericite powder, 2-5 parts of organic silicon resin powder and 1-2 parts of crystal whisker into a three-dimensional mixer, mixing for 3 hours, and then transferring the mixture into an internal mixer to heat to 90-110 ℃, mixing and internally mixing for 2 hours, taking out the internally mixed mixture, putting the mixture into a granulator, adjusting the granulation temperature to 100-110 ℃, adjusting the extrusion speed to enable the particle length to be 0.2-0.5 cm, putting the mixture into a high-temperature furnace, programming to heat to 250-300 ℃, keeping the temperature for 30 minutes, continuously introducing pure nitrogen, heating to 1300 ℃ for decarburization and purification for 60 minutes, finally co-firing for 2 hours at 1800-2600 ℃, crushing after cooling, putting the mixture into a dry powder ball mill for grinding and refining until the average particle size is 3um, and obtaining the powder A.
S2: mixing and grinding 20-30 parts of ceramic powder, 2-5 parts of quartz powder, 5-10 parts of titanium dioxide, 2-5 parts of metal oxide powder and 1-2 parts of sericite powder for 1 hour to obtain mixed powder B;
s3: adding 20-30 parts of organic silicon resin powder into 100 parts of organic solvent for dissolving, adding 18-50 parts of powder A and mixed powder B, stirring and dispersing uniformly, and vacuumizing to remove part of solvent;
s4: transferring the solvent obtained in the step S3 to a spray dryer for atomization and powder making treatment, transferring the powder to a high-temperature furnace, curing for 2 hours at the temperature of 250-300 ℃, and heating to 2600 ℃ for sintering;
s5: and after the powder is cooled to room temperature, adding water for wet ball milling, grinding the powder until the average particle size is 3 mu m, filtering and drying to obtain the novel reflective heat-insulating powder.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688250A (en) * | 2022-04-19 | 2022-07-01 | 北京通美晶体技术股份有限公司 | Novel sealing structure for gallium arsenide crystal growth |
| CN115008777A (en) * | 2022-06-10 | 2022-09-06 | 安徽省国盛量子科技有限公司 | Manufacturing method of temperature sensing wide-field probe |
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2021
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688250A (en) * | 2022-04-19 | 2022-07-01 | 北京通美晶体技术股份有限公司 | Novel sealing structure for gallium arsenide crystal growth |
| CN115008777A (en) * | 2022-06-10 | 2022-09-06 | 安徽省国盛量子科技有限公司 | Manufacturing method of temperature sensing wide-field probe |
| CN115008777B (en) * | 2022-06-10 | 2023-06-30 | 安徽省国盛量子科技有限公司 | Manufacturing method of temperature sensing wide-field probe |
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