CN114892415B - Heat-preserving and heat-insulating coiled material and preparation method thereof - Google Patents
Heat-preserving and heat-insulating coiled material and preparation method thereof Download PDFInfo
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- CN114892415B CN114892415B CN202210507371.3A CN202210507371A CN114892415B CN 114892415 B CN114892415 B CN 114892415B CN 202210507371 A CN202210507371 A CN 202210507371A CN 114892415 B CN114892415 B CN 114892415B
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- coiled material
- aerogel
- polyvinyl chloride
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- 239000000463 material Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000004964 aerogel Substances 0.000 claims abstract description 67
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000009413 insulation Methods 0.000 claims abstract description 35
- 239000002131 composite material Substances 0.000 claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 32
- 239000002002 slurry Substances 0.000 claims abstract description 29
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 25
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 25
- 238000004321 preservation Methods 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004965 Silica aerogel Substances 0.000 claims abstract description 21
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 17
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 17
- 229920002472 Starch Polymers 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 239000008107 starch Substances 0.000 claims abstract description 17
- 235000019698 starch Nutrition 0.000 claims abstract description 17
- 239000010451 perlite Substances 0.000 claims abstract description 15
- 235000019362 perlite Nutrition 0.000 claims abstract description 15
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 14
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- 239000000375 suspending agent Substances 0.000 claims abstract description 14
- 239000000839 emulsion Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 12
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 12
- 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 12
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 12
- 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 12
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 31
- 238000005507 spraying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 239000000440 bentonite Substances 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- 239000004005 microsphere Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000010981 drying operation Methods 0.000 claims description 2
- 238000007581 slurry coating method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 6
- 239000004566 building material Substances 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 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
- 241000272194 Ciconiiformes Species 0.000 description 1
- 241001147416 Ursus maritimus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 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
- 238000002955 isolation Methods 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
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000011160 research 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
- 230000002195 synergetic effect Effects 0.000 description 1
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 a polyvinyl chloride fiber mesh cloth and composite aerogel slurry coated on two sides of the polyvinyl chloride fiber mesh cloth, wherein the composite aerogel material comprises the following components: silica aerogel, lotus root starch, silicone-acrylic emulsion, silica fume, perlite particles, kaolin, fly ash, aluminum silicate powder, shrinkage reducing agent, basalt fiber powder, suspending agent, water-oil universal dispersing agent and water. The dry density of the heat-insulating coiled material provided by the invention can be as low as 80kg/m 3 The heat conduction coefficient is lower than 0.040W/(m.K), the heat insulation wall has excellent heat 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 heat insulation layer, has the advantages of light and thin material, low cost, simple preparation process, convenient construction and the like, is suitable for industrialized mass 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 insulation coiled material and a preparation method thereof.
Background
The silica aerogel material is a porous light heat-insulating material, is the lightest solid material known at present and is the best heat-insulating material so far, and the heat-insulating material is originally used in the important national fields of aerospace, military industry and the like. With the advancement of the technology of the military and civil engineering of aerogel materials, the aerogel materials have been used in the construction field.
At present, the silica aerogel material is mainly applied to the building field in the forms of aerogel felt, aerogel coating, aerogel mortar and the like, but because the weight of the silica aerogel material is light, the silica aerogel material is difficult to fuse with other materials, so that the dispersibility of the silica aerogel material in the application process is very poor, if the silica aerogel material is unevenly dispersed, the silica aerogel material can form accumulation and embracing clusters, the heat insulation performance of the silica aerogel material is not only hindered, but also the cost of the silica aerogel material is increased in a multiplied way due to the increased use amount, so that the prepared building material is thick, the heat insulation effect is not ideal, and the construction difficulty is high. Therefore, how to smoothly fuse the aerogel material with other materials and uniformly disperse the aerogel material in the system becomes a key factor for restricting the wide application of the aerogel in the construction field. In addition, some gridding cloth with low heat conductivity coefficient is also commonly used in concrete building materials, but the concrete materials are thick and heavy, the gridding cloth with fewer layers is used, the required heat preservation effect cannot be met, the cost can be increased when the use amount is increased, the adhesive force and the tensile strength between the gridding cloth and the building concrete materials can be reduced, and the use standard of the building materials cannot be met. Therefore, the developed heat-insulating coiled material with excellent heat-insulating performance, light weight, low cost and convenient construction becomes a research hot spot in the current building industry.
Disclosure of Invention
Aiming at the problems of poor dispersibility, poor heat preservation effect, thick and heavy material and high construction difficulty of the silicon dioxide aerogel material in the prior art, the invention provides a heat preservation and heat 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-insulating coiled material comprises a polyvinyl chloride fiber gridding cloth and composite aerogel slurry coated on two sides 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 of 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 suspending agent: 20-30 parts of water-oil general dispersing agent: 3.5 parts to 4.5 parts and water: 55-70 parts.
Compared with the prior art, the method has the advantages that the lotus root starch is added in the dispersing process of the silicon dioxide aerogel, so that the silicon dioxide aerogel forms cladding on the surface of the aerogel, the thickening effect is realized, the uniform dispersion of the aerogel material in water is facilitated, the cladding aerogel material and other components can fully react by adding the water-oil general dispersing agent, the suspending agent and the shrinkage reducing agent, the silicone-acrylic emulsion is used as a bonding material, the affinity and the bonding strength between the components are increased, the aerogel composite slurry with uniform system is formed, the polyvinyl chloride mesh cloth is used as a matrix, and the heat-insulating coiled material with the heat conductivity lower than 0.040W/(m.K) is obtained by coating the aerogel composite slurry on two sides.
The aerogel composite slurry is uniformly sprayed on two sides of the polyvinyl chloride mesh cloth, so that the heat preservation and insulation effects of the composite aerogel material and the polyvinyl chloride mesh cloth can be exerted to the greatest extent. The heat preservation and insulation coil prepared by the inventionThe dry density of the material can be as low as 80kg/m 3 The heat conduction coefficient is lower than 0.040W/(m.K), the heat insulation material has excellent heat insulation effect, can be coated on 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 insulation layer, can replace heat insulation materials such as traditional aerogel felts, aerogel vacuum plates and the like, is low in cost and convenient to construct, and has wide development and application prospects.
Optionally, the specification of the polyvinyl chloride mesh fabric is as follows: the length is 200cm-350cm, the width is 60cm-150cm, and the thickness is 0.3mm-0.5mm.
The specification of the polyvinyl chloride mesh cloth can be set according to actual requirements, and the polyvinyl chloride mesh cloth selected by the invention has the advantages of lowest heat conductivity coefficient, high tensile strength and low cost in the fiber fabric, and the optimized specification is more convenient for batch production, transportation and subsequent assembly of heat-insulating coiled materials.
Optionally, the composite aerogel slurry is coated to a thickness of 1.5mm to 2.0mm.
Optionally, the water-oil universal dispersant is EFKA 4310 or EFKA PA4401 of Basff, germany.
The preferable efficient dispersing agent, the suspending agent and the shrinkage reducing agent can be used together to fully disperse the silica aerogel material, increase the porosity of the aerogel and exert the heat preservation and insulation performances.
Optionally, the suspending agent is 800-1200 meshes of titanium dioxide or acrylic acid (ester) polymer.
Optionally, the acrylic polymer is SF-1 of Sanming Huzhong New Material technology Co., ltd.
The superfine titanium dioxide serving as a suspending agent can cooperate with components such as a dispersing agent, so that the silicon dioxide aerogel is prevented from accumulating and agglomerating, and the dispersing effect is optimized; the acrylic acid (ester) polymer has a thickening effect, and can be synergistic with lotus root starch, dispersing agent and the like, thereby being further beneficial to the uniform dispersion of aerogel materials in water.
Optionally, the shrinkage reducing agent is 600-800 mesh bentonite.
Bentonite is a clay mineral with montmorillonite as a main component, has strong water absorption, can absorb water which is 8 times of the volume of the clay mineral, has 10-30 times of volume expansion, is in a suspension and gel state in an aqueous solution, and can further improve the porosity of an aerogel material when being mixed with silica aerogel for use, so that the cracking formed by shrinkage of the aerogel coating is prevented, and the airtight effect of the whole coating surface is achieved.
Optionally, the particle size of the silica aerogel is 10nm-20nm.
Optionally, the grain size of the lotus root starch is 20nm-50nm.
The nano silicon dioxide aerogel is mixed with nano lotus root starch, silica fume, fly ash, perlite and the like, 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 microsphere hollow fly ash with 1200-1600 meshes.
Optionally, the fineness of the perlite particles is 20-30 mesh.
The invention also provides a preparation method of the heat preservation and heat insulation coiled material, which comprises the following steps:
step a, weighing all the components according to the designed proportion, uniformly mixing the weighed lotus root starch, the oil-water universal dispersing agent, the water and the silicon dioxide aerogel, and then placing the mixture in a vacuum stirring tank for pressurized stirring uniformly, wherein the pressurized pressure is 1.5-2.5 MPa;
step 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 mesh 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 mix with substances such as dispersing agents, shrinkage reducing agents and the like uniformly by stirring at normal pressure, and the aerogel material can be fully dispersed and fully reacted with other substances by a vacuum stirring tank under the preferable pressure, so that the heat preservation and heat insulation performances of the silica aerogel material are furthest exerted.
Optionally, in step a, the stirring conditions are: the rotating speed is 500r/min-700r/min, and the time is 30 seconds-50 seconds.
Optionally, in step b, the stirring conditions are: 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 and the back of the polyvinyl chloride mesh cloth, and the spraying thickness of each surface is 1.5mm-2.0mm.
Optionally, in the step c, the high-temperature steam drying operation is as follows: 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 like the villus of polar bear or penguin, the composite aerogel slurry is uniformly sprayed on the chlorid mesh cloth, the nano porosity is increased, the air tightness of the composite aerogel slurry is increased, and an isolation layer is formed on the surface of the chlorid mesh cloth, so that the effects of heat preservation and heat insulation are achieved. The thickness of the heat-insulating coiled material prepared by the method is only 3-4 mm, and the problems that the existing aerogel material is thick and heavy and is not easy to transport and construct are solved. The preparation method is simple to operate, has no complex procedure, is low in cost, is suitable for industrial mass production, and has wide market prospect and development potential.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment of the invention provides a heat-insulating coiled material, which consists of composite aerogel slurry and polyvinyl chloride mesh cloth; the composite aerogel slurry comprises the following raw material components in parts by weight: nanoscale silica aerogel: 25 parts of nanoscale lotus root starch: 12 parts of silicone-acrylic emulsion: 35 parts of 1000-mesh silica fume: 50 parts of 20-mesh perlite: 480 parts of kaolin: 70 parts of 1200 mesh microsphere hollow fly ash: 70 parts of aluminum silicate powder: 200 parts of 800-mesh bentonite: 50 parts of basalt fiber powder: 25 parts of 800-mesh titanium dioxide: 20 parts of Basoff EFKA 4310:4 parts of water: 60 parts.
The preparation steps of the heat preservation and heat insulation coiled material are as follows:
step a, weighing all the components according to the designed proportion, uniformly mixing the weighed lotus root starch, the oil-water universal dispersing agent, the water and the silicon dioxide aerogel, and then placing the mixture in a vacuum stirring tank for uniform pressurizing and stirring, 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, a shrinkage reducing agent, basalt fiber powder and a suspending agent into a vacuum stirring tank, and stirring for 15 seconds under the condition of the rotating speed of 350r/min to obtain the composite aerogel slurry;
step c: spraying the composite aerogel slurry on the front and back surfaces of the polyvinyl chloride fiber mesh cloth for 1.5mm respectively, and baking at 500 ℃ for 5min to obtain the heat-preservation and heat-insulation coiled material.
Example 2
The embodiment of the invention provides a heat-insulating coiled material, which consists of composite aerogel slurry and polyvinyl chloride mesh cloth; the composite aerogel slurry comprises the following raw material components in parts by weight: nanoscale silica aerogel: 28 parts of nanoscale lotus root starch: 10 parts of silicone-acrylic emulsion: 30 parts of 1200 mesh silica fume: 40 parts, 30 mesh perlite: 550 parts of kaolin: 50 parts of 1600-mesh microspherical hollow fly ash: 80 parts of aluminum silicate powder: 150 parts, 600 mesh bentonite: 56 parts of basalt fiber powder: 20 parts of SF-1:25 parts of Pasteur EFKA PA4401:3.5 parts of water: 70 parts.
The preparation steps of the heat preservation and heat insulation coiled material are as follows:
step a, weighing all the components according to the designed proportion, uniformly mixing the weighed lotus root starch, the oil-water universal dispersing agent, the water and the silicon dioxide aerogel, and then placing the mixture in a vacuum stirring tank for uniform pressurizing and stirring, wherein the pressure is 1.5MPa, the rotating speed is 500r/min, and the time is 50 seconds;
step b, adding the weighed silicone-acrylic emulsion, silica fume, perlite particles, kaolin, 1600-mesh microspherical hollow coal ash, aluminum silicate powder, a shrinkage reducing agent, basalt fiber powder and a suspending agent into a vacuum stirring tank, and stirring for 20 seconds under the condition of 500r/min of rotating speed to obtain the composite aerogel slurry;
step c: and respectively spraying the composite aerogel slurry on the front and the back of the polyvinyl chloride fiber mesh cloth for 2mm, 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-insulating coiled material, which consists of composite aerogel slurry and polyvinyl chloride mesh cloth; the composite aerogel slurry comprises the following raw material components in parts by weight: nanoscale silica aerogel: 32 parts of nanoscale lotus root starch: 115 parts of silicone-acrylic emulsion: 40 parts, 1000 mesh silica fume: 60 parts, 30 mesh perlite: 450 parts of kaolin: 80 parts of 1400-mesh microsphere hollow fly ash: 50 parts of aluminum silicate powder: 250 parts of 800-mesh bentonite: 45 parts of basalt fiber powder: 35 parts of 1200-mesh titanium dioxide: 30 parts of Pasteur EFKA 4310:4.5 parts of water: 55 parts.
The preparation steps of the heat preservation and heat insulation coiled material are as follows:
step a, weighing all the components according to the designed proportion, uniformly mixing the weighed lotus root starch, the oil-water universal dispersing agent, the water and the silicon dioxide aerogel, and then placing the mixture in a vacuum stirring tank for uniform pressurizing and stirring, wherein the pressure is 2.5MPa, the rotating speed is 700r/min, and the time is 40 seconds;
step b, adding the weighed silicone-acrylic emulsion, silica fume, perlite particles, kaolin, 1400-mesh microspherical hollow coal ash, aluminum silicate powder, a shrinkage reducing agent, basalt fiber powder and a suspending agent into a vacuum stirring tank, and stirring for 15 seconds under the condition of 400r/min of rotating speed to obtain the composite aerogel slurry;
step c: spraying the composite aerogel slurry on the front and back surfaces of the polyvinyl chloride fiber mesh cloth for 1.7mm respectively, and baking at 450 ℃ for 8min to obtain the heat-preservation and heat-insulation coiled material.
Comparative example 1
The invention provides an aerogel coiled material in comparative example 1, wherein the dispersant Pasteur EFKA 4310 in example 1 is replaced by BYK-191 of Pick company, and the rest components and the preparation method are the same as those in example 1, and are not repeated.
Comparative example 2
The invention provides an aerogel coiled material in comparative example 2, wherein the polyvinyl chloride mesh cloth in example 1 is replaced by acrylic mesh cloth, and the rest components and the preparation method are the same as those in example 1, and are not repeated.
Comparative example 3
The invention provides an aerogel coiled material in comparative example 3, wherein the pressure in the stirring of a vacuum tank in the step a of the preparation method of example 1 is adjusted from 2MPa to normal pressure (0.1 MPa), and the other steps and raw material components are the same as those of example 1, and are not repeated.
In order to better embody the characteristics of the porous light self-heat-insulation wallboard prepared by the embodiment of the invention, the heat-insulation coiled materials prepared by the embodiments 1-3 and the aerogel coiled materials prepared by the comparative embodiments 1-3 are subjected to performance test, the porosity, the dry density and the heat conductivity coefficient of the heat-insulation coiled materials are detected, and the detection results are shown in table 1. The dry density test standard is GB/T11969-2008, and the thermal conductivity coefficient test standard is GB/T22588-2008.
Table 1 results of performance tests for wallboard prepared in examples 1-3 and comparative examples 1-3
| Project | 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 |
| Coefficient of thermal conductivity (W/(m.K)) | 0.036 | 0.038 | 0.037 | 0.051 | 0.064 | 0.056 |
As can be seen from the table, the heat-insulating coiled material prepared by the method has the dry density of 80W/(m.K) -90W/(m.K), and the heat conductivity coefficient is lower than 0.040W/(m.K), so that the heat-insulating effect is achieved. Compared with the prior art, the heat-insulating coiled material prepared by the method has the advantages of good heat-insulating effect, light and thin material, low cost, convenience in transportation and the like, is suitable for industrial mass production, and has wide market prospect and development potential.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The heat-insulating coiled material is characterized by comprising a piece of polyvinyl chloride mesh cloth and composite aerogel slurry coated on two sides of the polyvinyl chloride mesh 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 of 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 suspending agent: 20-30 parts of water-oil general dispersing agent: 3.5 parts to 4.5 parts and water: 55-70 parts;
wherein the water-oil general-purpose dispersant is EFKA 4310 or EFKA PA440 of Basff, germany;
the shrinkage reducing agent is bentonite with 600 meshes to 800 meshes;
the suspending agent is 800-1200 meshes of titanium dioxide;
the preparation method of the heat preservation and heat insulation coiled material comprises the following steps:
step a, weighing all the components according to the designed proportion, uniformly mixing the weighed lotus root starch, the oil-water universal dispersing agent, the water and the silicon dioxide aerogel, and then placing the mixture in a vacuum stirring tank for pressurized stirring uniformly, wherein the pressurized pressure is 1.5-2.5 MPa;
step 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;
and c, spraying the composite aerogel slurry on the polyvinyl chloride fiber mesh cloth, and drying by high-temperature steam to obtain the heat-preservation and heat-insulation coiled material.
2. The heat preservation and insulation coil according to claim 1, wherein the specification of the polyvinyl chloride mesh cloth is: the length is 200cm-350cm, the width is 60cm-150cm, and the thickness is 0.3mm-0.5mm.
3. The insulation coil of claim 1, wherein the composite aerogel slurry coating has a thickness of 1.5mm to 2.0mm.
4. The insulation coil of claim 1, wherein the silica aerogel has a particle size of 10nm to 20nm; and/or
The grain size of the lotus root starch is 20nm-50nm; and/or
The fineness of the silica fume is 1000 meshes-1200 meshes; and/or
The fly ash is microsphere hollow fly ash with 1200-1600 meshes; and/or
The fineness of the perlite particles is 20-30 meshes.
5. A method for preparing the heat preservation and heat insulation coiled material according to any one of claims 1 to 4, which comprises the following steps:
step a, weighing all the components according to the designed proportion, uniformly mixing the weighed lotus root starch, the oil-water universal dispersing agent, the water and the silicon dioxide aerogel, and then placing the mixture in a vacuum stirring tank for pressurized stirring uniformly, wherein the pressurized pressure is 1.5-2.5 MPa;
step 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 mesh cloth, and drying by high-temperature steam to obtain the heat-preservation and heat-insulation coiled material.
6. The method for preparing a heat-preserving and heat-insulating coiled material according to claim 5, 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.
7. The method for preparing a heat-insulating coiled material according to claim 5, wherein in the step c, the spraying operation is as follows: spraying is carried out on the front and the back of the polyvinyl chloride mesh cloth, and the spraying thickness of each surface is 1.5mm-2.0mm.
8. The method for preparing heat-insulating coiled material according to claim 5, 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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