CN113370613A - Indoor insulation board material and preparation method thereof - Google Patents
Indoor insulation board material and preparation method thereof Download PDFInfo
- Publication number
- CN113370613A CN113370613A CN202110722451.6A CN202110722451A CN113370613A CN 113370613 A CN113370613 A CN 113370613A CN 202110722451 A CN202110722451 A CN 202110722451A CN 113370613 A CN113370613 A CN 113370613A
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- layer
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- nano
- board material
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- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000009413 insulation Methods 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000010410 layer Substances 0.000 claims abstract description 77
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000004964 aerogel Substances 0.000 claims abstract description 41
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 39
- 239000002344 surface layer Substances 0.000 claims abstract description 31
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000005336 cracking Methods 0.000 claims abstract description 29
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 239000004793 Polystyrene Substances 0.000 claims abstract description 16
- 229920002223 polystyrene Polymers 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 14
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 14
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 14
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 14
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000002940 repellent Effects 0.000 claims abstract description 13
- 239000005871 repellent Substances 0.000 claims abstract description 13
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 13
- 239000012153 distilled water Substances 0.000 claims abstract description 12
- XJKVPKYVPCWHFO-UHFFFAOYSA-N silicon;hydrate Chemical compound O.[Si] XJKVPKYVPCWHFO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010902 straw Substances 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000004568 cement Substances 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000005543 nano-size silicon particle Substances 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000007767 bonding agent Substances 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 4
- 239000002154 agricultural waste Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 4
- 238000004108 freeze drying Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 238000003828 vacuum filtration Methods 0.000 claims description 4
- 238000009777 vacuum freeze-drying Methods 0.000 claims description 4
- 241000209140 Triticum Species 0.000 claims description 3
- 235000021307 Triticum Nutrition 0.000 claims description 3
- 240000008042 Zea mays Species 0.000 claims description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 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 2
- 239000003292 glue Substances 0.000 claims description 2
- 229910052863 mullite Inorganic materials 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 229920003051 synthetic elastomer Polymers 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 239000005061 synthetic rubber Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 claims 1
- 235000009973 maize Nutrition 0.000 claims 1
- 239000011230 binding agent Substances 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000003115 biocidal effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000012774 insulation material Substances 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000004088 foaming agent Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000352 supercritical drying Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/152—Preparation of hydrogels
- C01B33/154—Preparation of hydrogels by acidic treatment of aqueous silicate solutions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
- C01B33/158—Purification; Drying; Dehydrating
- C01B33/1585—Dehydration into aerogels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
- E04B1/90—Insulating elements for both heat and sound slab-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/04—Inorganic
- B32B2266/049—Water-setting material, e.g. concrete, plaster or asbestos cement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/12—Gel
- B32B2266/126—Aerogel, i.e. a supercritically dried gel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Inorganic Chemistry (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides an indoor insulation board material and a preparation method thereof, the indoor insulation board material comprises an outer surface layer, an outer anti-cracking layer, a composite insulation layer, an inner anti-cracking layer and an inner surface layer, wherein each layer is bonded by a binder, and the composite insulation layer comprises the following raw materials in parts by weight: 100-150 parts of silicon dioxide nano aerogel, 2-10 parts of titanium dioxide, 5-10 parts of polystyrene particles, 100-150 parts of melamine aerogel powder, 5-10 parts of carbon nano tubes, 1-5 parts of nano dispersing agent, 1-5 parts of organic silicon water repellent powder, 5-10 parts of sodium dodecyl benzene sulfonate, 5-10 parts of acetic acid and 30-60 parts of distilled water. The indoor heat insulation plate material provided by the invention has the technical effects of fire prevention, heat insulation, low cost, energy conservation, environmental protection, sound insulation and antibiosis.
Description
Technical Field
The invention relates to the technical field of building insulation board materials, in particular to an indoor insulation board material and a preparation method thereof.
Background
The traditional building heat-insulating materials are mainly divided into inorganic heat-insulating materials and organic heat-insulating materials. Organic materials such as EPS (molded polystyrene board), XPS (extruded polystyrene board), PUR (rigid foam polyurethane), and modified phenolic resin, etc., have low thermal conductivity and strong heat-insulating property, but are flammable and generally recognized as B2-grade flammable materials. The inorganic heat-insulating material mainly comprises a glass cotton plate, a rock wool plate, an STP plate (inorganic fiber core material and a high-barrier vacuum composite film are treated by ultra-strong vacuum), YT inorganic active heat-insulating mortar (high-temperature-resistant natural inorganic light material is used as aggregate, protein fiber is added, and various inorganic modified and inorganic solidified materials) and the like, and is generally considered as A-grade non-combustible material, and the material has good fire resistance and durability but poor heat-insulating property. With the rapid development of economy and technology, a plurality of organic-inorganic composite thermal insulation materials emerge in the field of building thermal insulation materials, and the purpose is to enhance the advantages of single organic thermal insulation materials and inorganic thermal insulation materials through synergistic action and make up the respective defects.
In recent years, SiO has been developed2Aerogel is a novel light heat-insulating material. SiO 22The aerogel has the advantages of low density, high porosity, low thermal conductivity and the like, is a material with the lowest thermal conductivity coefficient in the current solid materials, has the thermal conductivity coefficient of 0.013W/m.K, is originally applied to the aerospace industry, has been applied to the fields of military industry, chemical industry, medicine, building energy conservation and the like at present, has wide application prospect, but has the defects of low strength and high brittleness, so that in the prior art, the aerogel, inorganic thermal insulation materials, fibers and the like are generally prepared into composite thermal insulation materials, such as aerogel glass fiber felt materials, vacuum heat insulation and thermal insulation materials and the likeA warm plate material, etc.
However, the above-mentioned prior art has the following drawbacks: the strength of the material is very low and is limited by the composite technology, and aerogel powder is easy to scatter from base fiber and lose the heat insulation performance; the production process is complex, the efficiency is low, the manufacturing cost is high, and the like. At present, in a series of requirements such as improvement of performance, control of cost and meeting of increasing requirements (such as sound insulation and antibiosis) for improving life quality of people, a novel composite indoor insulation board material capable of meeting the requirements does not appear in the market.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an indoor insulation board material and a preparation method thereof.
The invention adopts the following technical scheme:
the indoor heat-insulating board material is characterized by comprising an outer surface layer, an outer anti-cracking layer, a composite heat-insulating layer, an inner anti-cracking layer and an inner surface layer, wherein each layer is bonded by a bonding agent, the bonding sequence is the outer surface layer, the outer anti-cracking layer, the composite heat-insulating layer, the inner anti-cracking layer and the inner surface layer in sequence, and the composite heat-insulating layer comprises the following raw materials in parts by weight: 100-150 parts of silicon dioxide nano aerogel, 2-10 parts of titanium dioxide, 5-10 parts of polystyrene particles, 100-150 parts of melamine aerogel powder, 5-10 parts of carbon nano tubes, 1-5 parts of nano dispersing agent, 1-5 parts of organic silicon water repellent powder, 5-10 parts of sodium dodecyl benzene sulfonate, 5-10 parts of acetic acid and 30-60 parts of distilled water.
According to the invention, the silicon dioxide nano aerogel, titanium dioxide, melamine aerogel powder and carbon nano tubes are used as aggregates, the recycled polystyrene particles are used as fillers, and the nano dispersing agent, the organic silicon water repellent powder, the micro foaming agent sodium dodecyl benzene sulfonate, the curing agent acetic acid, the hydrosolvent and the like are added to prepare the composite heat insulation layer, so that the composite heat insulation layer has excellent heat insulation, fire prevention, sound insulation and antibiosis performances, and is bonded with the inner anti-cracking layer, the outer anti-cracking layer, the inner surface layer and the outer surface layer, and the heat insulation and fire prevention performances of the composite heat insulation layer are further enhanced.
Further, in the above technical solution, the inner surface layer and the outer surface layer are foamed cement boards.
The foamed cement board is A1-grade non-combustible inorganic material, the closed pore rate of the foamed cement board is more than 95%, and the foamed cement board has good heat insulation and sound insulation properties; the volume dry density is 180-250 kg/m3, the weight is light, the heat conductivity coefficient is low and is less than 0.06w/m.k, and the heat preservation performance is good; the compressive strength is high, and the binding power is strong; meanwhile, cement and fly ash are used as main raw materials, so that the cement and fly ash can not be combusted and produce toxic gas at high temperature, and the material has no radioactivity, and belongs to an energy-saving and environment-friendly material.
Further, in the above technical solution, the inner crack resistant layer and the outer crack resistant layer are glass fibers, alumina silicate fibers, high alumina fibers or mullite fibers.
Preferably, in the above technical solution, the inner anti-cracking layer and the outer anti-cracking layer are alkali-resistant fiberglass mesh cloth, and the mesh aperture of the alkali-resistant fiberglass mesh cloth is 0.1-0.5 cm.
The alkali-resistant glass fiber mesh fabric has good alkali resistance to high-alkali building materials such as cement and the like, and has good anti-cracking and flame-retardant effects.
Preferably, in the above technical scheme, the composite heat insulation layer comprises the following raw materials in parts by weight: 100 parts of silicon dioxide nano aerogel, 2 parts of titanium dioxide, 5 parts of polystyrene particles, 100 parts of melamine aerogel powder, 5 parts of carbon nano tubes, 1 part of nano dispersant, 1 part of organosilicon water repellent powder, 5 parts of sodium dodecyl benzene sulfonate, 5 parts of acetic acid and 30 parts of distilled water.
Further, in the above technical solution, the adhesive is one or more of animal glue, synthetic resin, rubber and paint.
Further, in the technical scheme, the silicon dioxide nano aerogel is prepared by adopting agricultural waste straws as a raw material.
Specifically, in the above technical scheme, the straw includes corn straw, rice straw or wheat straw.
The method for preparing the silicon dioxide nano aerogel by adopting the agricultural waste corn straws, rice straws or wheat straws and the like reduces the manufacturing cost, changes waste into valuable, reduces the environmental pollution, does not need supercritical drying, and has simple preparation method and low cost.
The invention also provides a preparation method of the indoor insulation board material, which is characterized by comprising the following steps:
(1) preparation of silica Nanoallogels
(a) Crushing straw serving as a raw material, washing with 0.01-0.8 mol/L diluted hydrochloric acid, heating at 65-75 ℃ for 1-2 hours, washing with water to be neutral, and drying in a drying oven at 110 ℃ to be completely dry;
(b) calcining the crushed straw for 50-300 minutes at 300-650 ℃ through a muffle furnace, taking out the calcined crushed straw and rapidly cooling the calcined crushed straw to obtain silicon dioxide powder;
(c) performing ball milling treatment on the silicon dioxide powder obtained in the step (b) for 30-50 minutes by using a high-speed vibration ball mill, and performing ultrasonic treatment for 1.5-5 hours by using an ultrasonic wave dispersion instrument under the power of 200w to obtain nano silicon dioxide;
(d) adding 0.2-1.2 mol/L sodium hydroxide solution into the nano silicon dioxide obtained in the step (c), heating and reacting for 2.5-3.5 hours in a boiling state, cooling the solution after reaction, carrying out vacuum filtration on the solution, and separating to obtain water glass;
(e) adding sulfuric acid into the water glass solution obtained in the step (d), adjusting the pH value to 1-2, dropwise and slowly adding a sodium hydroxide solution until the pH value is 7-8, continuously stirring, standing and aging for 24 hours, repeatedly cleaning with deionized water, exchanging with an absolute ethyl alcohol solvent for 54 hours, replacing absolute ethyl alcohol once every 18 hours, and finally freeze-drying in a vacuum freeze-drying machine for 24 hours to obtain the silicon dioxide nano aerogel;
(2) preparing composite heat-insulating layer
(a) Adding melamine aerogel powder, distilled water, a nano dispersant, organic silicon water repellent powder and sodium dodecyl benzene sulfonate into a double-shaft forced stirrer, and premixing for 5 minutes to uniformly disperse a system;
(b) then adding silicon dioxide nano aerogel, titanium dioxide, carbon nano tubes and polystyrene particles, stirring for 10min at the speed of 120r/min, adding acetic acid, and stirring uniformly to obtain a composite heat-insulating layer;
(3) forming of indoor insulating board material
The outer surface layer, the outer anti-cracking layer, the composite heat-insulating layer, the inner anti-cracking layer and the inner surface layer are sequentially bonded and fixed through the bonding agent according to the bonding sequence.
Compared with the prior art, the invention has the beneficial effects that:
(1) the indoor insulation board material provided by the invention comprises a composite insulation layer prepared by taking silicon dioxide nano aerogel, titanium dioxide, melamine aerogel powder, carbon nano tubes and the like as aggregates, and an outer surface layer, an outer anti-cracking layer, the composite insulation layer, an inner anti-cracking layer and an inner surface layer are bonded together through a binder to obtain the indoor insulation board material, so that the indoor insulation board material has good performances of heat preservation, fire prevention, sound insulation, durability and the like.
(2) The indoor insulation board material provided by the invention is prepared into silicon dioxide nano aerogel by using agricultural waste straws; the recycled polystyrene particles are used as organic filler of the composite heat-insulating layer; the foamed cement board is used as the inner surface layer and the outer surface layer, so that the cost is saved, the energy is saved, the environment is protected, and the development trend of novel building insulation board materials is met;
(3) according to the indoor heat-insulating board material provided by the invention, titanium dioxide is added into the composite heat-insulating layer, so that the extinction coefficient is improved, the radiation heat transfer is controlled, the sound-insulating and antibacterial effects are achieved, and the increasingly improved pursuit of people for good life can be met.
Detailed Description
The present invention is further described in detail below with reference to specific examples so that those skilled in the art can more clearly understand the present invention.
In the examples of the present invention, all the raw material components are conventional commercial products well known to those skilled in the art, unless otherwise specified; in the examples of the present invention, unless otherwise specified, all technical means used are conventional means well known to those skilled in the art.
Example 1
The embodiment of the invention provides an indoor insulation board material.
The indoor heat insulation board material is formed by bonding an outer surface layer, an outer anti-cracking layer, a composite heat insulation layer, an inner anti-cracking layer and an inner surface layer by using a bonding agent in sequence.
The composite heat-insulating layer comprises the following raw materials in parts by weight: 100g of silicon dioxide nano aerogel, 8g of titanium dioxide, 5g of polystyrene particles, 110g of melamine aerogel powder, 5g of carbon nano tubes, 1g of nano dispersing agent, 4g of organic silicon water repellent powder, 5g of micro foaming agent sodium dodecyl benzene sulfonate, 6g of curing agent acetic acid and 30g of distilled water.
The dispersant is a special nano material dispersant sold in the market.
The inner surface layer and the outer surface layer are foamed cement boards.
The inner anti-cracking layer and the outer anti-cracking layer are alkali-resistant glass fiber mesh cloth with mesh aperture of 0.2 cm.
The binder is epoxy resin adhesive for construction.
The preparation method of the indoor insulation board material provided by the embodiment comprises the following steps:
(1) preparation of silica Nanoallogels
(a) Crushing 500g of straws serving as a raw material, and screening crushed rice straws which can pass through a 40-mesh sieve and cannot pass through a 60-mesh sieve; washing 200g of screened straw scraps with 500mL of 0.3mol/L diluted hydrochloric acid, heating at 70 ℃ for 1.5 hours, washing with water to be neutral, and drying in a 110 ℃ oven to be completely dry;
(b) calcining the straw crushed materials for 150 minutes at 550 ℃ through a muffle furnace, taking out the calcined straw crushed materials, and rapidly cooling the calcined straw crushed materials to obtain silicon dioxide powder;
(c) performing ball milling treatment on the silicon dioxide powder obtained in the step (b) for 50 minutes by using a high-speed vibration ball mill, and performing ultrasonic treatment for 3 hours by using an ultrasonic wave dispersion instrument under the power of 200w to obtain nano silicon dioxide;
(d) adding the nano silicon dioxide obtained in the step (c) into 0.6mol/L sodium hydroxide solution, heating and reacting for 3.5 hours in a boiling state, cooling the solution after reaction, carrying out vacuum filtration on the solution, and separating to obtain water glass;
(e) adding sulfuric acid into the water glass solution obtained in the step (d), adjusting the pH value to 1, dropwise and slowly adding a sodium hydroxide solution until the pH value is 7, continuously stirring, standing and aging for 24 hours, repeatedly cleaning with deionized water, exchanging with an absolute ethyl alcohol solvent for 54 hours, replacing absolute ethyl alcohol once every 18 hours, and finally freeze-drying in a vacuum freeze-drying machine for 24 hours to obtain the silicon dioxide nano aerogel;
(2) preparing composite heat-insulating layer
(a) 100g of melamine aerogel powder, 30g of distilled water, 1g of nano dispersant, 1g of organosilicon water repellent powder and 5g of sodium dodecyl benzene sulfonate are added into a double-shaft forced stirrer, and the mixture is premixed for 5 minutes to ensure that the system is uniformly dispersed;
(b) then adding 100g of silicon dioxide nano aerogel, 2g of titanium dioxide, 5g of carbon nano tube and 5g of polystyrene particles, stirring at the speed of 120r/min for 10min, adding 5g of acetic acid, and stirring uniformly to obtain a composite heat-insulating layer;
(3) forming of indoor insulation board
The outer foamed cement board layer, the outer alkali-resistant glass fiber gridding cloth layer, the composite heat-insulating layer, the inner alkali-resistant glass fiber gridding cloth layer and the inner foamed cement board layer are sequentially bonded and fixed through the epoxy resin adhesive for the building.
Example 2
The embodiment of the invention provides an indoor insulation board material.
The indoor heat insulation board material is formed by bonding an outer surface layer, an outer anti-cracking layer, a composite heat insulation layer, an inner anti-cracking layer and an inner surface layer by using a bonding agent in sequence.
The composite heat-insulating layer comprises the following raw materials in parts by weight: 140g of silicon dioxide nano aerogel, 10g of titanium dioxide, 6g of polystyrene particles, 150g of melamine aerogel powder, 9g of carbon nano tubes, 4g of nano dispersing agent, 5g of organic silicon water repellent powder, 8g of micro foaming agent sodium dodecyl benzene sulfonate, 10g of curing agent acetic acid and 60g of distilled water.
The dispersant is a special nano material dispersant sold in the market.
The inner surface layer and the outer surface layer are foamed cement boards.
The inner anti-cracking layer and the outer anti-cracking layer are alkali-resistant glass fiber mesh cloth with mesh aperture of 0.2 cm.
The binder is epoxy resin adhesive for construction.
The preparation method of the indoor insulation board material provided by the embodiment comprises the following steps:
(1) preparation of silica Nanoallogels
(a) Taking 800g of straws as raw materials, crushing and screening out crushed rice straws which can pass through a 40-mesh sieve and can not pass through a 60-mesh sieve; washing 300g of screened straw crushed aggregates with 500mL of 0.4mol/L diluted hydrochloric acid, heating at 70 ℃ for 2 hours, washing with water to be neutral, and drying in a drying oven at 110 ℃ to be completely dry;
(b) calcining the straw crushed material for 210 minutes at 550 ℃ through a muffle furnace, taking out the calcined straw crushed material, and rapidly cooling the calcined straw crushed material to obtain silicon dioxide powder;
(c) performing ball milling treatment on the silicon dioxide powder obtained in the step (b) for 60 minutes by using a high-speed vibration ball mill, and performing ultrasonic treatment for 2.5 hours by using an ultrasonic wave dispersion instrument under the power of 200w to obtain nano silicon dioxide;
(d) adding the nano silicon dioxide obtained in the step (c) into 0.8mol/L sodium hydroxide solution, heating and reacting for 3.5 hours in a boiling state, cooling the solution after reaction, carrying out vacuum filtration on the solution, and separating to obtain water glass;
(e) adding sulfuric acid into the water glass solution obtained in the step (d), adjusting the pH value to 1, dropwise and slowly adding a sodium hydroxide solution until the pH value is 7, continuously stirring, standing and aging for 24 hours, repeatedly cleaning with deionized water, exchanging with an absolute ethyl alcohol solvent for 54 hours, replacing absolute ethyl alcohol once every 18 hours, and finally freeze-drying in a vacuum freeze-drying machine for 24 hours to obtain the silicon dioxide nano aerogel;
(2) preparing composite heat-insulating layer
(a) Adding 150g of melamine aerogel powder, 60g of distilled water, 5g of nano dispersant, 5g of organosilicon water repellent powder and 10g of sodium dodecyl benzene sulfonate into a double-shaft forced stirrer, and premixing for 5 minutes to uniformly disperse a system;
(b) then adding 150g of silicon dioxide nano aerogel, 10g of titanium dioxide, 10g of carbon nano tube and 10g of polystyrene particles, stirring at the speed of 120r/min for 10min, adding 10g of acetic acid, and stirring uniformly to obtain a composite heat-insulating layer;
(3) forming of indoor insulation board
The outer foamed cement board layer, the outer alkali-resistant glass fiber gridding cloth layer, the composite heat-insulating layer, the inner alkali-resistant glass fiber gridding cloth layer and the inner foamed cement board layer are sequentially bonded and fixed through the epoxy resin adhesive for the building.
Comparative example 1
Comparative example 1 differs from example 1 in that: the composite heat-insulating layer comprises the following raw materials in parts by weight: 180g of silicon dioxide nano aerogel, 10g of titanium dioxide, 4g of polystyrene particles, 150g of melamine aerogel powder, 9g of carbon nano tubes, 4g of nano dispersing agent, 5g of organic silicon water repellent powder, 8g of micro foaming agent sodium dodecyl benzene sulfonate, 10g of curing agent acetic acid and 60g of distilled water.
The main technical indexes of the indoor heat-insulating board materials prepared in the embodiments 1-2 and the comparative example 1 are shown in the following table:
performance of | Unit of | Require that | Example 1 | Example 2 | Comparative example 1 |
Coefficient of thermal conductivity | W/(m·K) | <0.1 | 0.05 | 0.04 | 0.12 |
Compressive strength | Mpa | >8 | 10 | 12 | 7 |
Flexural strength | Mpa | >4 | 4.5 | 4.8 | 2 |
Coefficient of sound absorption | α | >0.2 | 0.3 | 0.3 | 0.3 |
Antibacterial property | Antibacterial rate | 90% | 95% | 96% | 91% |
It should be noted that the above examples are only for further illustration and description of the technical solution of the present invention, and are not intended to further limit the technical solution of the present invention, and the method of the present invention is only a preferred embodiment, and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The indoor heat-insulating board material is characterized by comprising an outer surface layer, an outer anti-cracking layer, a composite heat-insulating layer, an inner anti-cracking layer and an inner surface layer, wherein each layer is bonded by a bonding agent, the bonding sequence is the outer surface layer, the outer anti-cracking layer, the composite heat-insulating layer, the inner anti-cracking layer and the inner surface layer in sequence, and the composite heat-insulating layer comprises the following raw materials in parts by weight: 100-150 parts of silicon dioxide nano aerogel, 2-10 parts of titanium dioxide, 5-10 parts of polystyrene particles, 100-150 parts of melamine aerogel powder, 5-10 parts of carbon nano tubes, 1-5 parts of nano dispersing agent, 1-5 parts of organic silicon water repellent powder, 5-10 parts of sodium dodecyl benzene sulfonate, 5-10 parts of acetic acid and 30-60 parts of distilled water.
2. An indoor insulating board material according to claim 1, wherein the inner and outer surface layers are foamed cement boards.
3. An indoor insulating board material according to claim 1, wherein the inner and outer crack-resistant layers are glass fiber, alumina silicate fiber, high alumina fiber or mullite fiber.
4. The indoor thermal insulation board material as claimed in claim 3, wherein the inner and outer crack-resistant layers are alkali-resistant fiberglass mesh cloth, and the mesh aperture of the alkali-resistant fiberglass mesh cloth is 0.1-0.5 cm.
5. The indoor insulation board material of claim 1, wherein the composite insulation layer comprises the following raw materials in parts by weight: 100 parts of silicon dioxide nano aerogel, 2 parts of titanium dioxide, 5 parts of polystyrene particles, 100 parts of melamine aerogel powder, 5 parts of carbon nano tubes, 1 part of nano dispersant, 1 part of organosilicon water repellent powder, 5 parts of sodium dodecyl benzene sulfonate, 5 parts of acetic acid and 30 parts of distilled water.
6. An indoor insulating board material according to claim 1, wherein the adhesive is one or more of animal glue, synthetic resin, rubber and paint.
7. An indoor insulation board material as claimed in claim 1, wherein the silica nano aerogel is made from agricultural waste straw.
8. An indoor insulating board material as claimed in claim 7, wherein the straw comprises maize straw, rice straw or wheat straw.
9. A preparation method of an indoor insulation board material is characterized by comprising the following steps:
(1) preparation of silica Nanoallogels
(a) Crushing straw serving as a raw material, washing with 0.01-0.8 mol/L diluted hydrochloric acid, heating at 65-75 ℃ for 1-2 hours, washing with water to be neutral, and drying in a drying oven at 110 ℃ to be completely dry;
(b) calcining the crushed straw for 50-300 minutes at 300-650 ℃ through a muffle furnace, taking out the calcined crushed straw and rapidly cooling the calcined crushed straw to obtain silicon dioxide powder;
(c) performing ball milling treatment on the silicon dioxide powder obtained in the step (b) for 30-50 minutes by using a high-speed vibration ball mill, and performing ultrasonic treatment for 1.5-5 hours by using an ultrasonic wave dispersion instrument under the power of 200w to obtain nano silicon dioxide;
(d) adding 0.2-1.2 mol/L sodium hydroxide solution into the nano silicon dioxide obtained in the step (c), heating and reacting for 2.5-3.5 hours in a boiling state, cooling the solution after reaction, carrying out vacuum filtration on the solution, and separating to obtain water glass;
(e) adding sulfuric acid into the water glass solution obtained in the step (d), adjusting the pH value to 1-2, dropwise and slowly adding a sodium hydroxide solution until the pH value is 7-8, continuously stirring, standing and aging for 24 hours, repeatedly cleaning with deionized water, exchanging with an absolute ethyl alcohol solvent for 54 hours, replacing absolute ethyl alcohol once every 18 hours, and finally freeze-drying in a vacuum freeze-drying machine for 24 hours to obtain the silicon dioxide nano aerogel;
(2) preparing composite heat-insulating layer
(a) Adding melamine aerogel powder, distilled water, a nano dispersant, organic silicon water repellent powder and sodium dodecyl benzene sulfonate into a double-shaft forced stirrer, and premixing for 5 minutes to uniformly disperse a system;
(b) then adding silicon dioxide nano aerogel, titanium dioxide, carbon nano tubes and polystyrene particles, stirring for 10min at the speed of 120r/min, adding acetic acid, and stirring uniformly to obtain a composite heat-insulating layer;
(3) forming of indoor insulating board material
The outer surface layer, the outer anti-cracking layer, the composite heat-insulating layer, the inner anti-cracking layer and the inner surface layer are sequentially bonded and fixed through the bonding agent according to the bonding sequence.
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