CN113370613A - Indoor insulation board material and preparation method thereof - Google Patents

Indoor insulation board material and preparation method thereof Download PDF

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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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parts
layer
indoor
nano
board material
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杨辉
张洋
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Hubei Jiafuda Energy Saving Technology Co ltd
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Hubei Jiafuda Energy Saving Technology Co ltd
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Priority to CN202110722451.6A priority Critical patent/CN113370613A/en
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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

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  • 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

Indoor insulation board material and preparation method thereof
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.
CN202110722451.6A 2021-06-29 2021-06-29 Indoor insulation board material and preparation method thereof Pending CN113370613A (en)

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Publication number Priority date Publication date Assignee Title
CN106567474A (en) * 2016-10-28 2017-04-19 王贵然 Silicon dioxide nanometer aerogel hollow-core glass bead composite fireproof insulation board material and preparation method thereof
CN107010632A (en) * 2017-05-26 2017-08-04 南京林业大学 A kind of preparation method of biomass-based nanometer titanium dioxide silica aerogel
CN110937864A (en) * 2019-11-19 2020-03-31 江苏苏美材料股份有限公司 Preparation method of functional aerogel/cement fiber composite insulation board material
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106567474A (en) * 2016-10-28 2017-04-19 王贵然 Silicon dioxide nanometer aerogel hollow-core glass bead composite fireproof insulation board material and preparation method thereof
CN107010632A (en) * 2017-05-26 2017-08-04 南京林业大学 A kind of preparation method of biomass-based nanometer titanium dioxide silica aerogel
CN110937864A (en) * 2019-11-19 2020-03-31 江苏苏美材料股份有限公司 Preparation method of functional aerogel/cement fiber composite insulation board material
CN111410551A (en) * 2020-04-29 2020-07-14 南通鑫范新型建材有限公司 Plant fiber foaming wall heat-insulating material and preparation method thereof

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