CN114892415A - Heat-preservation and heat-insulation coiled material and preparation method thereof - Google Patents
Heat-preservation and heat-insulation coiled material and preparation method thereof Download PDFInfo
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- CN114892415A CN114892415A CN202210507371.3A CN202210507371A CN114892415A CN 114892415 A CN114892415 A CN 114892415A CN 202210507371 A CN202210507371 A CN 202210507371A CN 114892415 A CN114892415 A CN 114892415A
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- 239000000463 material Substances 0.000 title claims abstract description 71
- 238000009413 insulation Methods 0.000 title claims abstract description 39
- 238000004321 preservation Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000004964 aerogel Substances 0.000 claims abstract description 68
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000004744 fabric Substances 0.000 claims abstract description 31
- 239000002131 composite material Substances 0.000 claims abstract description 30
- 239000002002 slurry Substances 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 26
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 16
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 16
- 229920002472 Starch Polymers 0.000 claims abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 235000019698 starch Nutrition 0.000 claims abstract description 15
- 239000008107 starch Substances 0.000 claims abstract description 15
- 239000010451 perlite Substances 0.000 claims abstract description 14
- 235000019362 perlite Nutrition 0.000 claims abstract description 14
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 239000000375 suspending agent Substances 0.000 claims abstract description 13
- 239000000839 emulsion Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 12
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 11
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 11
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 11
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 27
- 239000004965 Silica aerogel Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 238000010981 drying operation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000004005 microsphere Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 239000004566 building material Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 5
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 11
- 239000012774 insulation material Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
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- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 241000272194 Ciconiiformes Species 0.000 description 1
- 241001147416 Ursus maritimus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/042—Acrylic polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
- D06N3/009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin by spraying components on the web
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/06—Properties of the materials having thermal properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2213/00—Others characteristics
- D06N2213/02—All layers being of the same kind of material, e.g. all layers being of polyolefins, all layers being of polyesters
-
- 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
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Thermal Insulation (AREA)
Abstract
The invention relates to the technical field of building materials, and particularly discloses a heat-preservation and heat-insulation coiled material and a preparation method thereof. The heat-preservation and heat-insulation coiled material comprises polyvinyl chloride fiber gridding cloth and composite aerogel slurry coated on two surfaces of the polyvinyl chloride fiber gridding cloth, wherein the composite aerogel slurry comprises the following components: silicon dioxide aerogel, lotus root starch, silicone-acrylic emulsion, silica fume, perlite particles, kaolin, fly ash, aluminum silicate powder, a shrinkage reducing agent, basalt fiber powder, a suspending agent, a water-oil universal dispersing agent and water. The dry density of the heat-preservation and heat-insulation coiled material provided by the invention can be as low as 80kg/m 3 The thermal conductivity coefficient is lower than 0.040W/(m.K), the heat-insulating wall has excellent heat-insulating effect, can be applied to the outer side or the inner side of a wall body, can be internally arranged in the wall body to form an integrated permanent heat-insulating layer, has the advantages of light and thin material, low cost, simple preparation process, convenient construction and the like, is suitable for industrial large-scale production, and has wide market prospect and development potential.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a heat-preservation and heat-insulation coiled material and a preparation method thereof.
Background
The silica aerogel material is a porous light thermal insulation material, is the lightest solid material known at present and is the best thermal insulation material so far, and the thermal insulation material is originally used in the important fields of the countries such as aerospace, military industry and the like. With the technical advance of converting aerogel materials into civil, the aerogel materials are applied to the field of buildings.
At present, silica aerogel materials are mainly applied to the field of buildings in the forms of aerogel felts, aerogel coatings, aerogel mortar and the like, but the silica aerogel materials are light in weight and difficult to fuse with other materials, so that the dispersibility of the silica aerogel materials in the application process is poor, and if the silica aerogel materials are not uniformly dispersed, the aerogel materials are accumulated and cohered, so that the heat insulation performance of the silica aerogel materials is prevented from being exerted, the cost of the silica aerogel materials is doubled due to the increase of the using amount, and the prepared building materials are not only heavy and have unsatisfactory heat insulation effect, but also have high construction difficulty. Therefore, how to smoothly fuse the aerogel material with other materials and uniformly disperse the aerogel material in a system becomes a key factor for restricting the wide application of the aerogel in the field of buildings. In addition, some mesh fabrics with low heat conductivity coefficient are also commonly used in concrete building materials, but the concrete material is thick, the number of used mesh fabrics is small, the required heat insulation effect cannot be met, the cost is increased by increasing the use amount, the adhesive force and the tensile strength between the mesh fabrics and the building concrete material are reduced, and the use standard of the building material cannot be met. Therefore, the development of a heat-insulating coiled material with excellent heat-insulating property, light weight, low cost and convenient construction becomes a research hotspot in the current building industry.
Disclosure of Invention
Aiming at the problems of poor dispersibility, poor heat preservation effect, heavy material and high construction difficulty of the silicon dioxide aerogel material in the prior art, the invention provides a heat preservation and insulation coiled material.
Further, the invention also provides a preparation method of the heat-preservation and heat-insulation coiled material.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the heat-preservation and heat-insulation coiled material comprises polyvinyl chloride fiber gridding cloth and composite aerogel slurry coated on two surfaces of the polyvinyl chloride fiber gridding cloth;
the composite aerogel slurry comprises the following raw material components in parts by weight: silica aerogel: 25-32 parts of lotus root starch: 10-15 parts of silicone-acrylic emulsion: 30-40 parts of silica fume: 40-60 parts of perlite particles: 450-550 parts, kaolin: 50-80 parts of fly ash: 50-80 parts of aluminum silicate powder: 150-250 parts of shrinkage reducing agent: 45-56 parts of basalt fiber powder: 20-35 parts of a suspending agent: 20-30 parts of water-oil universal dispersant: 3.5-4.5 parts and water: 55 to 70 parts.
Compared with the prior art, the lotus root powder is added in the dispersing process of the silicon dioxide aerogel, so that the silicon dioxide aerogel forms a coating on the surface of the aerogel, the thickening effect is achieved, the uniform dispersion of an aerogel material in water is facilitated, the water-oil universal dispersing agent, the suspending agent and the shrinkage reducing agent are added, the coated aerogel material can fully react with other components, the silicone-acrylic emulsion is used as a bonding material, the affinity and the bonding strength among the components are increased, the uniform aerogel composite slurry is formed, the polyvinyl chloride fiber mesh fabric is used as a matrix, and the aerogel composite slurry is coated on two sides, so that the heat-insulating coiled material with the heat conductivity coefficient lower than 0.040W/(m.K) is obtained.
The aerogel composite slurry is uniformly sprayed on two sides of the polyvinyl chloride fiber gridding cloth, so that the heat preservation and insulation effects of the composite aerogel material and the polyvinyl chloride fiber gridding cloth can be exerted to the maximum extent. The dry density of the heat-preservation and heat-insulation coiled material prepared by the invention can be as low as 80kg/m 3 The thermal conductivity coefficient is lower than 0.040W/(m.K), the thermal insulation material has excellent thermal insulation effect, can be applied to the outer side or the inner side of a wall body, can also be internally arranged in the wall body to form an integrated permanent thermal insulation layer, can replace the traditional thermal insulation materials such as aerogel felts, aerogel vacuum plates and the like, and has low cost, convenient construction and wide development and application prospects.
Optionally, the polyvinyl chloride fiber mesh fabric has the following specifications: the length is 200cm-350cm, the width is 60cm-150cm, and the thickness is 0.3mm-0.5 mm.
The specification of the polyvinyl chloride fiber gridding cloth can be set according to actual requirements, the polyvinyl chloride fiber gridding cloth selected by the invention has the lowest heat conductivity coefficient, large tensile strength and low cost in fiber fabrics, and the preferred specification is more convenient for batch production, transportation and subsequent assembly of the heat-insulating coiled material.
Optionally, the thickness of the composite aerogel slurry coating is 1.5mm-2.0 mm.
Optionally, the water and oil universal dispersant is EFKA 4310 or EFKA PA4401 of basff, germany.
The preferred high-efficient dispersant of this application and suspending agent, shrinkage reducing agent collocation use can increase the aerogel porosity with silica aerogel material homodisperse, performance heat preservation heat-proof quality.
Optionally, the suspending agent is titanium dioxide or acrylic acid (ester) polymer with 800-1200 meshes.
Optionally, the acrylic polymer is SF-1 from Sanminghai Mass. New Material science and technology, Inc.
The ultrafine titanium dioxide as a suspending agent can be used in cooperation with components such as a dispersing agent and the like, so that the silicon dioxide aerogel is prevented from accumulating and clustering, and the dispersing effect is optimal; the acrylic acid (ester) polymer has a thickening effect, and can be used for further facilitating uniform dispersion of the aerogel material in water under the synergistic effect of the acrylic acid (ester) polymer, lotus root starch, a dispersing agent and the like.
Optionally, the shrinkage reducing agent is bentonite with 600 meshes to 800 meshes.
The bentonite is a clay mineral which takes montmorillonite as a main component, has strong water absorption, can absorb water which is 8 times of the volume of the bentonite, expands 10-30 times of the volume, is in a suspension and gel state in an aqueous solution, can further improve the porosity of an aerogel material when being mixed with silicon dioxide aerogel for use, and prevents the crack formed by the contraction of an aerogel coating so as to achieve the airtight effect of the whole coating surface.
Optionally, the particle size of the silica aerogel is 10nm-20 nm.
Optionally, the grain size of the lotus root starch is 20nm-50 nm.
The nano-scale silicon dioxide aerogel, the nano-scale lotus root starch, the silica fume, the fly ash, the perlite and the like are mixed for use, so that the aerogel material is easier to disperse, and the performance of the porous light heat-insulating material can be better exerted.
Optionally, the fineness of the silica fume is 1000-1200 meshes.
Optionally, the fly ash is 1200-1600-mesh microspherical hollow fly ash.
Optionally, the fineness of the perlite particles is 20-30 meshes.
The invention also provides a preparation method of the heat preservation and insulation coil, which comprises the following steps:
step a, weighing all components according to a design ratio, uniformly mixing the weighed lotus root starch, an oil-water universal dispersant, water and silicon dioxide aerogel, then placing the mixture in a vacuum stirring tank, and uniformly stirring the mixture under pressure, wherein the pressure under pressure is 1.5MPa-2.5 MPa;
b, adding the weighed silicone-acrylic emulsion, silica fume, perlite particles, kaolin, fly ash, aluminum silicate powder, shrinkage reducing agent, basalt fiber powder and suspending agent into the vacuum stirring tank, and uniformly stirring to obtain the composite aerogel slurry;
step c: and spraying the composite aerogel slurry on the polyvinyl chloride fiber gridding cloth, and drying by high-temperature steam to obtain the heat-preservation and heat-insulation coiled material.
The silica aerogel material is light and porous, and is difficult to be uniformly mixed with substances such as a dispersing agent, a shrinkage reducing agent and the like by normal-pressure stirring, so that the aerogel material can be fully dispersed and fully reacted with other substances by a vacuum stirring tank under the optimal pressure, and the heat preservation and insulation performance of the aerogel material is exerted to the maximum extent.
Optionally, in step a, the stirring conditions are as follows: the rotating speed is 500r/min-700r/min, and the time is 30 seconds-50 seconds.
Optionally, in step b, the stirring conditions are as follows: the rotating speed is 350r/min-500r/min, and the time is 15 seconds-20 seconds.
Optionally, in step c, the spraying operation is: spraying is carried out on the front surface and the back surface of the polyvinyl chloride fiber mesh fabric, and the spraying thickness of each surface is 1.5mm-2.0 mm.
Optionally, in step c, the high-temperature steam drying operation is: baking at 450-550 deg.C for 5-10 min.
Compared with the prior art, the preparation method provided by the invention utilizes the bionics principle, and the composite aerogel slurry is uniformly sprayed on the polyvinyl chloride fiber gridding cloth like the villus of a polar bear or a penguin, so that the nano porosity is increased, the air tightness of the composite aerogel slurry is increased, and an air isolating layer is formed on the surface of the polyvinyl chloride fiber gridding cloth, thereby achieving the effects of heat preservation and heat insulation. The thickness of the heat-preservation and heat-insulation coiled material prepared by the application is only 3-4 mm, and the problems that the existing aerogel material is heavy and is not easy to transport and construct are solved. The preparation method is simple to operate, free of complex procedures, low in cost, suitable for industrial large-scale production, and wide in market prospect and development potential.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment of the invention provides a heat-preservation and heat-insulation coiled material which is composed of composite aerogel slurry and polyvinyl chloride fiber gridding cloth; the composite aerogel slurry comprises the following raw material components in parts by weight: nano-scale silica aerogel: 25 parts of nano lotus root starch: 12 parts, silicone-acrylic emulsion: 35 parts, 1000-mesh silica fume: 50 parts of 20-mesh perlite: 480 parts, kaolin: 70 parts of 1200-mesh microspherical hollow fly ash: 70 parts of aluminum silicate powder: 200 parts of bentonite of 800 meshes: 50 parts of basalt fiber powder: 25 parts of titanium dioxide powder with 800 meshes: 20 parts, basf EFKA 4310: 4 parts and water: and 60 parts.
The preparation steps of the heat-preservation and heat-insulation coiled material are as follows:
step a, weighing all components according to a design ratio, uniformly mixing the weighed lotus root starch, an oil-water universal dispersant, water and silicon dioxide aerogel, then placing the mixture in a vacuum stirring tank, and uniformly stirring the mixture under pressure, wherein the pressure is 2MPa, the rotating speed is 600r/min, and the time is 30 seconds;
step b, adding the weighed silicone-acrylic emulsion, silica fume, perlite particles, kaolin, 1200-mesh microspherical hollow coal ash, aluminum silicate powder, shrinkage-reducing agent, basalt fiber powder and suspending agent into a vacuum stirring tank, and stirring for 15 seconds under the condition that the rotating speed is 350r/min to obtain the composite aerogel slurry;
step c: and respectively spraying the composite aerogel slurry on the front surface and the back surface of the polyvinyl chloride fiber gridding cloth by 1.5mm, and baking for 5min at 500 ℃ to obtain the heat-preservation and heat-insulation coiled material.
Example 2
The embodiment of the invention provides a heat-preservation and heat-insulation coiled material which is composed of composite aerogel slurry and polyvinyl chloride fiber gridding cloth; the composite aerogel slurry comprises the following raw material components in parts by weight: nano-scale silica aerogel: 28 parts of nano lotus root starch: 10 parts, silicone-acrylic emulsion: 30 parts, 1200-mesh silica fume: 40 parts of 30-mesh perlite: 550 parts, kaolin: 50 parts of 1600-mesh microspherical hollow fly ash: 80 parts, aluminum silicate powder: 150 parts, 600 mesh bentonite: 56 parts of basalt fiber powder: 20 parts, SF-1: 25 parts, basf EFKA PA 4401: 3.5 parts and water: 70 parts of (A).
The preparation steps of the heat-preservation and heat-insulation coiled material are as follows:
step a, weighing all components according to a designed ratio, uniformly mixing the weighed lotus root starch, the oil-water universal dispersant, water and silicon dioxide aerogel, then placing the mixture into a vacuum stirring tank, and uniformly stirring the mixture under pressure at 1.5MPa at a rotating speed of 500r/min for 50 seconds;
b, adding the weighed silicone-acrylic emulsion, silica fume, perlite particles, kaolin, 1600-mesh microspherical internal fly ash, aluminum silicate powder, shrinkage reducing agent, basalt fiber powder and suspending agent into a vacuum stirring tank, and stirring for 20 seconds under the condition that the rotating speed is 500r/min to obtain the composite aerogel slurry;
step c: and respectively spraying 2mm of the composite aerogel slurry on the front surface and the back surface of the polyvinyl chloride fiber gridding cloth, and baking for 10min at 550 ℃ to obtain the heat-preservation and heat-insulation coiled material.
Example 3
The embodiment of the invention provides a heat-preservation and heat-insulation coiled material which is composed of composite aerogel slurry and polyvinyl chloride fiber gridding cloth; the composite aerogel slurry comprises the following raw material components in parts by weight: nano-scale silica aerogel: 32 parts, nano lotus root starch: 115 parts, silicone-acrylic emulsion: 40 parts, 1000-mesh silica fume: 60 parts of 30-mesh perlite: 450 parts, kaolin: 80 parts of 1400-mesh microspherical hollow fly ash: 50 parts of aluminum silicate powder: 250 parts of bentonite with 800 meshes: 45 parts of basalt fiber powder: 35 parts, 1200 mesh titanium dioxide: 30 parts, basf EFKA 4310: 4.5 parts and water: and 55 parts.
The preparation steps of the heat-preservation and heat-insulation coiled material are as follows:
step a, weighing all components according to a design ratio, uniformly mixing the weighed lotus root starch, an oil-water universal dispersant, water and silicon dioxide aerogel, then placing the mixture in a vacuum stirring tank, and uniformly stirring the mixture under pressure, wherein the pressure is 2.5MPa, the rotating speed is 700r/min, and the time is 40 seconds;
b, adding the weighed silicone-acrylic emulsion, silica fume, perlite particles, kaolin, 1400-mesh microspherical internal fly ash, aluminum silicate powder, shrinkage reducing agent, basalt fiber powder and suspending agent into a vacuum stirring tank, and stirring for 15 seconds under the condition that the rotating speed is 400r/min to obtain the composite aerogel slurry;
step c: and respectively spraying the composite aerogel slurry on the front surface and the back surface of the polyvinyl chloride fiber gridding cloth by 1.7mm, and baking for 8min at the temperature of 450 ℃ to obtain the heat-preservation and heat-insulation coiled material.
Comparative example 1
Comparative example 1 of the present invention provides an aerogel roll, in which the dispersant basf EFKA 4310 in example 1 is replaced with BYK-191 from BYK, and the remaining components and the preparation method are the same as those in example 1, and thus, detailed description thereof is omitted.
Comparative example 2
The comparative example 2 of the invention provides an aerogel coiled material, wherein the polyvinyl chloride fiber gridding cloth in the example 1 is replaced by the acrylic fiber gridding cloth, and the rest components and the preparation method are the same as those in the example 1 and are not described again.
Comparative example 3
Comparative example 3 of the present invention provides an aerogel coil, wherein the pressure during stirring in the vacuum tank in step a of the preparation method of example 1 is adjusted from 2MPa to normal pressure (0.1MPa), and the rest of the steps and the raw material components are the same as those in example 1, and are not repeated.
In order to better embody the characteristics of the porous light self-insulation wallboard prepared in the embodiment of the invention, the performance tests are carried out on the heat-insulation coiled materials prepared in the embodiments 1-3 and the aerogel coiled materials prepared in the comparative examples 1-3, the porosity, the dry density and the thermal conductivity coefficient of the heat-insulation coiled materials are detected, and the detection results are shown in table 1. Wherein, the dry density test standard is GB/T11969-2008, and the detection standard of the thermal conductivity coefficient is GB/T22588-2008.
TABLE 1 test results of the Properties of wallboards prepared in examples 1-3 and comparative examples 1-3
| Item | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Dry density (kg/m) 3 ) | 80 | 89 | 85 | 182 | 142 | 175 |
| Thermal conductivity (W/(m.K)) | 0.036 | 0.038 | 0.037 | 0.051 | 0.064 | 0.056 |
As can be seen from the table above, the thermal insulation coiled material prepared by the method has the dry density of 80W/(m.K) -90W/(m.K), and the thermal conductivity coefficient is lower than 0.040W/(m.K), so that the thermal insulation effect is achieved. Compared with the prior art, the heat preservation and insulation coiled material prepared by the application has the advantages of good heat preservation and insulation effect, light and thin material, low cost, convenience in transportation and the like, is suitable for industrial large-scale production, and has wide market prospect and development potential.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The heat-preservation and heat-insulation coiled material is characterized by comprising polyvinyl chloride fiber gridding cloth and composite aerogel slurry coated on two surfaces of the polyvinyl chloride fiber gridding cloth;
the composite aerogel slurry comprises the following raw material components in parts by weight: silica aerogel: 25-32 parts of lotus root starch: 10-15 parts of silicone-acrylic emulsion: 30-40 parts of silica fume: 40-60 parts of perlite particles: 450-550 parts, kaolin: 50-80 parts of fly ash: 50-80 parts of aluminum silicate powder: 150-250 parts of shrinkage reducing agent: 45-56 parts of basalt fiber powder: 20-35 parts of a suspending agent: 20-30 parts of water-oil universal dispersant: 3.5-4.5 parts and water: 55 to 70 parts.
2. The thermal insulating coil material as claimed in claim 1, wherein the polyvinyl chloride fiber gridding cloth has the following specifications: the length is 200cm-350cm, the width is 60cm-150cm, and the thickness is 0.3mm-0.5 mm.
3. The thermal insulating coil as claimed in claim 1, wherein the composite aerogel slurry is applied to a thickness of 1.5mm to 2.0 mm.
4. The thermal insulating coil of claim 1, wherein the water and oil universal dispersant is EFKA 4310 or EFKA PA440, basff, germany.
5. The heat-insulating coiled material as claimed in claim 1, wherein the suspending agent is titanium dioxide or acrylic acid (ester) polymer with 800-1200 meshes; and/or
The shrinkage reducing agent is 600-800 mesh bentonite.
6. The thermal insulating coil according to claim 1, wherein the silica aerogel has a particle size of 10nm to 20 nm; and/or
The grain diameter of the lotus root starch is 20nm-50 nm; and/or
The fineness of the silica fume is 1000-1200 meshes; and/or
The fly ash is 1200-1600-mesh microspheric hollow fly ash; and/or
The fineness of the perlite particles is 20-30 meshes.
7. A method for preparing a heat insulating coil material according to any one of claims 1 to 6, characterized by comprising the steps of:
step a, weighing all components according to a design ratio, uniformly mixing the weighed lotus root starch, an oil-water universal dispersant, water and silicon dioxide aerogel, then placing the mixture in a vacuum stirring tank, and uniformly stirring the mixture under pressure, wherein the pressure under pressure is 1.5MPa-2.5 MPa;
b, adding the weighed silicone-acrylic emulsion, silica fume, perlite particles, kaolin, fly ash, aluminum silicate powder, shrinkage reducing agent, basalt fiber powder and suspending agent into the vacuum stirring tank, and uniformly stirring to obtain the composite aerogel slurry;
step c: and spraying the composite aerogel slurry on the polyvinyl chloride fiber gridding cloth, and drying by high-temperature steam to obtain the heat-preservation and heat-insulation coiled material.
8. The method for preparing a heat insulating coil material according to claim 7, wherein in the step a, the stirring conditions are as follows: the rotating speed is 500r/min-700r/min, and the time is 30 seconds-50 seconds;
in the step b, the stirring conditions are as follows: the rotating speed is 350r/min-500r/min, and the time is 15 seconds-20 seconds.
9. The method for manufacturing a heat-insulating coil material as claimed in claim 7, wherein in the step c, the spraying operation is: spraying is carried out on the front surface and the back surface of the polyvinyl chloride fiber mesh fabric, and the spraying thickness of each surface is 1.5mm-2.0 mm.
10. The method for preparing a heat-insulating coiled material as claimed in claim 7, wherein in the step c, the high-temperature steam drying operation is as follows: baking at 450-550 deg.C for 5-10 min.
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