CN112480729B - Double-component outer wall thin heat insulation material and use method thereof - Google Patents

Double-component outer wall thin heat insulation material and use method thereof Download PDF

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Publication number
CN112480729B
CN112480729B CN202011444282.6A CN202011444282A CN112480729B CN 112480729 B CN112480729 B CN 112480729B CN 202011444282 A CN202011444282 A CN 202011444282A CN 112480729 B CN112480729 B CN 112480729B
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component
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mass
insulation material
agent
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CN112480729A (en
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周力
俞秀娟
王莹莹
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Zhejiang Ruiguang Energy Saving Technology Co ltd
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Zhejiang Ruiguang Energy Saving Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
    • C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • 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
    • E04B1/762—Exterior insulation of exterior walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2201/10—Transparent films; Clear coatings; Transparent materials
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • 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
    • Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires

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  • Engineering & Computer Science (AREA)
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  • Mechanical Engineering (AREA)
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Abstract

The invention relates to a double-component outer wall thin body heat insulation material, which comprises a first component and a second component; the first component comprises 20-40 parts by mass of water-soluble silicate, 0.05-0.5 part by mass of surfactant, 0.1-1 part by mass of pH regulator, 0.1-0.5 part by mass of reducing agent, 0.1-2 parts by mass of reaction promoter, 0.01-0.5 part by mass of anti-freezing agent and 40-60 parts by mass of deionized water; the second component comprises 8-16 parts by mass of superfine hydrophilic silicon dioxide, 15-25 parts by mass of hollow glass beads, 15-20 parts by mass of styrene-alkyl acrylate emulsion, 15-20 parts by mass of modified styrene-acrylic emulsion, 0.3-5 parts by mass of film-forming assistant, 0.2-2 parts by mass of defoaming agent, 0.2-3 parts by mass of preservative, 0.6-4 parts by mass of dispersing agent, 15-30 parts by mass of deionized water and 0-2 parts by mass of pigment. The coating can simultaneously block micro cracks of the concrete outer wall and provide heat insulation and preservation effects, is not easy to peel off, and has durable durability.

Description

Double-component outer wall thin heat insulation material and use method thereof
Technical Field
The invention relates to the technical field of exterior wall coatings, in particular to a double-component exterior wall thin heat insulation material and a using method thereof.
Background
The building outer wall is used as the outermost layer structure of a building and is mainly formed by curing concrete mortar, and under long-term rainwater intrusion, the outer wall material is easy to crack and discolor due to aging, so that water seepage or acid gas invasion is caused, and the concrete mortar is accelerated to age. The heat-insulating bricks embedded on the outer wall are also mainly porous foam cement or heat-insulating materials such as heat-insulating cotton, asbestos, polyurethane foam and the like wrapped in a cement shell. Once cracks appear on the surface of the insulating brick, water seepage or harmful acid gas invasion can be caused, and the corrosion speed of foam cement or an insulating material inside the insulating brick is accelerated. At present, the coating used by common external walls mainly plays a role in repairing cracks, preventing water and corrosion, does not consider the functions of heat insulation and heat preservation, and the building energy consumption caused by heat exchange inside and outside the building is an important component of the current energy consumption. In addition, the exterior wall coating is directly contacted with wind, sunlight and rain all the year round, so that a coating film is easy to weather and peel, and finally falls off in a sheet manner, and the effect of the exterior wall coating cannot be maintained for a long time. For example, coatings made of acrylic emulsion, fluorocarbon clear paint and the like which are commonly used at present are easy to delaminate and crack when being used outdoors.
Disclosure of Invention
Technical problem to be solved
In view of the defects and shortcomings of the prior art, the invention provides a double-component outer wall thin heat insulation material, which can repair and seal fine cracks of an outer wall, enhance the heat insulation effect of the outer wall, improve the firmness of the coating attached to the outer wall and increase the environmental tolerance of the coating.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in one aspect, the invention provides a double-component outer wall thin body heat insulation material, which comprises a first component and a second component;
the first component contains: 20-40 parts of water-soluble silicate, 0.05-0.5 part of surfactant, 0.1-1 part of pH regulator, 0.1-0.5 part of reducing agent, 0.1-2 parts of reaction promoter, 0.01-0.5 part of anti-freezing agent and 40-60 parts of deionized water;
the second component contains: 8-16 parts of superfine hydrophilic silicon dioxide, 15-25 parts of hollow glass beads, 15-20 parts of styrene-alkyl acrylate emulsion, 15-20 parts of modified styrene-acrylic emulsion, 0.3-5 parts of film-forming additive, 0.2-2 parts of defoaming agent, 0.2-3 parts of preservative, 0.6-4 parts of dispersing agent, 15-30 parts of deionized water and 0-2 parts of pigment.
According to the preferred embodiment of the invention, the water-soluble silicate is one or a mixture of sodium silicate, potassium silicate and lithium silicate.
According to a preferred embodiment of the present invention, the surfactant is any one of primary alcohol, secondary alcohol, dodecyltrimethylamlodipine, imidazolines, polyoxyethylene tridecyl ether or castor oil polyoxyethylene ether ester.
Preferably, the pH adjuster is any one of borate, sodium hydroxide, or potassium hydroxide.
Preferably, the reducing agent is an inorganic ion reducing agent of the thiourea series or the sodium thiosulfate series.
Preferably, the reaction accelerator is any one of an inorganic halide salt (ammonium chloride, etc.) ionic liquid and a citrate ion.
Preferably, the anti-freezing agent is a carbonate.
The first component is packaged and transported in the form of inorganic powder in the packaging, selling and transporting processes, and is temporarily added with water before use to prepare slurry convenient for spraying or painting, and the preparation method comprises the following steps: weighing surfactant, pH regulator, reductant, reaction promoter, antifreezing agent and deionized water, mixing and stirring in a high-speed shearing kettle at the rotation speed of 800-1000rpm for dispersion, and adding sodium silicate, potassium silicate or lithium silicate while stirring at high speed until the addition is completed and the mixed solution is completely transparent and uniform.
According to the preferred embodiment of the present invention, the specific surface area of the ultra-fine hydrophilic silica is 180 to 200m2(ii)/g; the silicon dioxide with the specific surface area is active silicon dioxide powder.
According to a preferred embodiment of the invention, in the second component, the film forming aid is one or a mixture of at least two of ethylene glycol butyl ether, propylene glycol butyl ether and 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate at any ratio. Preferably, the defoaming agent is one or a mixture of polyether modified organic silicon and polysiloxane defoaming agent. Preferably, the preservative is one of isothiazolinone derivatives, benzimidazolyl esters, dovisil-75 and 1, 2-benzisothiazolin-3-one. Preferably, the dispersant is one of polycarboxylate, polyphosphate and polysiloxane.
According to a preferred embodiment of the present invention, in the second component, the colorant is one of rutile titanium dioxide, iron oxide pigment, phthalocyanine pigment or composite pigment or a mixture thereof. The pigment may or may not be added according to the situation.
On the other hand, the invention provides a use method of a double-component outer wall thin body heat insulation material, which comprises the following steps:
step 1, coating a base surface of the outer wall concrete/outer wall heat-insulating brick by using a first component;
the first component was prepared as follows: weighing a surfactant, a pH regulator, a reducing agent, a reaction promoter, an anti-freezing agent and deionized water, mixing, stirring and dispersing in a high-speed shearing kettle with the rotation speed of 800 plus one year 1000rpm, adding water-soluble silicate while stirring at a high speed until the water-soluble silicate is completely added, wherein the mixed solution is a completely transparent and uniform liquid, and the pH value of the first component is more than or equal to 11;
step 2, coating the second component on the surface of the first component;
the preparation method of the second component comprises the following steps:
adding the defoaming agent, the dispersing agent and the deionized water into a sand mill, stirring to uniformly disperse the materials, adding the modified styrene-acrylic emulsion, the styrene-alkyl acrylate emulsion, the film-forming assistant and the preservative during stirring, continuing stirring, adding the hollow glass beads, the superfine hydrophilic silicon dioxide and the pigment, stirring at a high speed at the rotating speed of 800-1000rpm, mixing and dispersing to obtain a second component;
and step 3: and after the second component is dried, the first component is used on the surface of the second component to carry out finish coating, and the construction is finished after the second component is dried.
According to the preferred embodiment of the invention, before the step 1, if cracks of 1-8mm exist on the base surface of the outer wall concrete/outer wall insulating brick, grouting is carried out by adopting inorganic or organic materials to repair the fine cracks.
According to the preferred embodiment of the invention, in the step 1, coating is carried out by adopting a spraying mode; preferably, the spraying amount is 100-2And the depth of the concrete is more than 5cm after the concrete is infiltrated into the concrete substrate.
According to the preferred embodiment of the present invention, after the spraying of the first component in step 1 is completed, the coating of the second component in step 2 is performed after the standing for 30min to 60 min.
According to the preferred embodiment of the present invention, after step 2 is completed, the container is placed for 2-3 hours, and then step 3 is performed.
(III) advantageous effects
The beneficial technical effects of the invention comprise:
the first component in the double-component outer wall thin heat insulation material mainly plays two roles, one is that silicate particles (potassium silicate, sodium silicate and potassium silicate) contained in water-soluble silicate contained in the double-component outer wall thin heat insulation material are utilized to obtain nano silicon dioxide active particles under the action of various assistants, and the nano silicon dioxide active particles penetrate into outer wall concrete/outer wall heat insulation bricks (mainly cement-based heat insulation bricks) within a certain depth range and are crystallized and solidified to generate C-S-H gel (CaO)x·SiO2·(H2O)y) The concrete surface layer pores or capillary pores are filled to prevent the invasion of substances such as external acidic gas, harmful water, carbon dioxide and the like, the base surface of the outer wall concrete/outer wall insulation brick is strengthened, and meanwhile, the first component just grows out of the root system which is pricked into the base surface of the concrete, so that the first component can be firmly combined on the outer wall surface. And secondly, the first component provides hydrophilic groups (silicate and hydroxide ion groups) for the attachment of the second component, and the second component contains active silicon dioxide powder which can react with the hydrophilic groups in the first component to generate a rigid network structure. In addition, the second component also contains modified styrene-acrylic emulsion (organosilicon modified styrene-acrylic emulsion, abbreviated as silicon styrene-acrylic emulsion, organosilicon has excellent performances of high and low temperature resistance, ultraviolet ray resistance, infrared radiation resistance, oxidation degradation resistance and the like, the weatherability, gloss retention, elasticity, durability and the like of the styrene-acrylic emulsion can be obviously improved by modifying the styrene-acrylic emulsion with the organosilicon), and styrene-alkyl acrylate emulsion, wherein the two emulsions have good adhesion, particularly good adhesion of the modified styrene-acrylic emulsion, transparent adhesive film, good water resistance, oil resistance, heat resistance and aging resistance, and form a flexible network structure after drying. And finally, coating the first component on the surface of the second component again, and reacting the first component with the unreacted active silicon dioxide powder in the second component to form a rigid network. Two-layer rigid network and emulsion curingThe formed flexible network is interlaced, so that the second component which mainly plays a role in heat insulation can be firmly attached to the surface of the building outer wall or the heat insulation brick. The second component contains high-content hollow glass beads, and plays a role in heat insulation and heat preservation for the outer wall of a building.
Different from the existing waterproof anticorrosive coating, the double-component coating can repair and block the micro cracks of the concrete outer wall and has the functions of heat insulation and heat preservation, the coating can form a stable breathable net film, can prevent the invasion of external acidic gas, harmful water, carbon dioxide and other substances, and simultaneously allows the outward diffusion of harmful water vapor, and the heat preservation coating is wrapped between two layers of nano active silicic acid permeable crystalline materials, is not easy to peel off and has lasting durability.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail below with reference to specific embodiments.
Example 1
The embodiment provides a double-component outer wall thin heat insulation material, which is prepared by the following steps:
(1) preparation of the first component
Weighing 0.1 part of dodecyl trimethyl amlodipine serving as a surfactant, 0.5 part of thiourea serving as a reducing agent, 1 part of ammonium chloride serving as a reaction promoter, 0.2 part of sodium carbonate serving as an anti-freezing agent and 45 parts of deionized water according to the mass ratio, mixing, stirring and dispersing for 25min in a high-speed shearing kettle at the rotating speed of 800rpm, adding 10 parts of sodium silicate, 15 parts of potassium silicate and 5 parts of lithium silicate while stirring at a high speed until the components are completely added and the mixed solution is completely transparent and uniform, and adding 0.4 part of NaOH serving as a pH regulator to ensure that the pH of the first component is more than 11.
(2) Preparation of the second component
Weighing 12 parts of superfine hydrophilic silicon dioxide, 20 parts of hollow glass beads, 15 parts of styrene-alkyl acrylate emulsion, 15 parts of modified styrene-acrylic emulsion, 2 parts of film-forming aid ethylene glycol butyl ether, 1 part of Pasteur 2410(A10) defoaming agent, 0.5 part of isothiazolinone, 1 part of polycarboxylate dispersant, 30 parts of deionized water and 1 part of iron oxide powder according to the mass ratio. Adding the defoaming agent, the dispersing agent and the deionized water into a sand mill, stirring to uniformly disperse the materials, adding the modified styrene-acrylic emulsion, the styrene-alkyl acrylate emulsion, the film forming aid and the preservative during stirring, continuing stirring, adding the hollow glass beads, the superfine hydrophilic silicon dioxide and the pigment, and shearing, stirring and mixing at a high speed of 800rpm for 20min to obtain a second component.
Example 2
The embodiment provides a double-component outer wall thin heat insulation material, which is prepared by the following steps:
(1) preparation of the first component
Weighing 0.1 part of surfactant polyoxyethylene tridecyl ether, 0.3 part of reducing agent thiourea, 0.5 part of reaction accelerator ammonium chloride, 0.2 part of anti-freezing agent sodium carbonate and 40 parts of deionized water according to the mass ratio, mixing and stirring for dispersing for 30min in a high-speed shearing kettle at the rotating speed of 1000rpm, adding 15 parts of sodium silicate and 15 parts of potassium silicate while stirring at a high speed until the components are completely added and the mixed solution is completely transparent and uniform liquid, and adding 0.3 part of pH regulator NaOH to ensure that the pH of the first component is more than 11.
(2) Preparation of the second component
Weighing 10 parts of superfine hydrophilic silicon dioxide, 20 parts of hollow glass beads, 15 parts of styrene-alkyl acrylate emulsion, 15 parts of organic silicon modified styrene-acrylic emulsion, 2 parts of film-forming aid propylene glycol butyl ether, 1 part of Pasteur 2410(A10) defoaming agent, 0.5 part of preservative isothiazolinone, 1 part of polycarboxylate dispersant, 25 parts of deionized water and 0.5 part of iron oxide powder according to the mass ratio. Adding the defoaming agent, the dispersing agent and the deionized water into a sand mill, stirring to uniformly disperse the materials, adding the modified styrene-acrylic emulsion, the styrene-alkyl acrylate emulsion, the film forming aid and the preservative during stirring, continuing stirring, adding the hollow glass beads, the superfine hydrophilic silicon dioxide and the pigment, shearing at a high speed of 1000rpm, stirring and mixing for 20min, and dispersing to obtain a second component.
Example 3
The embodiment provides a double-component outer wall thin heat insulation material, which is prepared by the following steps:
(1) preparation of the first component
Weighing 0.5 part of surfactant polyoxyethylene tridecyl ether, 0.3 part of reducing agent thiourea, 1 part of reaction accelerator ammonium chloride, 0.3 part of anti-freezing agent sodium carbonate and 50 parts of deionized water according to the mass ratio, mixing, stirring and dispersing for 30min in a high-speed shearing kettle at the rotating speed of 1000rpm, adding 15 parts of sodium silicate, 15 parts of potassium silicate and 10 parts of lithium silicate while stirring at high speed until the components are completely added and the mixed solution is completely transparent and uniform liquid, and adding 0.5 part of pH regulator NaOH to ensure that the pH value of the first component is more than 11.
(2) Preparation of the second component
Weighing 16 parts of superfine hydrophilic silicon dioxide, 20 parts of hollow glass beads, 15 parts of styrene-alkyl acrylate emulsion, 20 parts of organic silicon modified styrene-acrylic emulsion, 2 parts of film-forming aid propylene glycol butyl ether, 1 part of Pasteur 2410(A10) defoaming agent, 0.5 part of preservative isothiazolinone, 1 part of polycarboxylate dispersant, 30 parts of deionized water and 0.5 part of iron oxide powder according to the mass ratio. Adding the defoaming agent, the dispersing agent and the deionized water into a sand mill, stirring to uniformly disperse the materials, adding the modified styrene-acrylic emulsion, the styrene-alkyl acrylate emulsion, the film forming aid and the preservative during stirring, continuing stirring, adding the hollow glass beads, the superfine hydrophilic silicon dioxide and the pigment, shearing at a high speed of 1000rpm, stirring and mixing for 20min, and dispersing to obtain a second component.
Example 4
The bi-component outer wall thin heat insulation material of the embodiment 1-3 is used for carrying out construction tests on the surfaces of cement concrete experimental concrete bricks.
Step 1 coating a base surface of a cement concrete brick with a first component
Firstly, checking whether cracks (such as the crack width is 1-8mm) or pits which are clearly visible by naked eyes exist on the surface of the cement concrete brick, if the cracks exist, repairing fine cracks by using a common grouting material, or filling the pits with cement mortar; and then the surface of the cement concrete brick is cleaned, so that no dust, oil stain and open water exist.
The first component is coated by spraying with a spraying amount of 100mL/m2So that the concrete can penetrate into the concrete base surface of the brick to a depth of more than 5 cm. After the spraying is finished, the natural stripThe mixture was left for 35 min.
Step 2, coating the second component on the surface of the first component
Brushing is carried out back and forth by adopting a brushing mode, the brushing edges are overlapped to cover the whole surface to be coated, and the surface is placed for 3 hours under natural conditions.
And step 3: and after the second component is dried, the first component is used on the surface of the second component to carry out finish coating, and the construction is finished after the second component is dried. The spraying manner and the spraying amount are shown in step 1.
The experimental brick is dried in the open air by natural wind for 30 days continuously, and the surface of the brick is manually drenched with 1% dilute hydrochloric acid solution and 2% sodium carbonate solution every day. Tests show that the surface of the brick does not have the phenomena of whitening, yellowing and the like, and the problems of peeling of slurry, overflow of ochre rust water on the surface and the like do not occur. The experimental brick is soaked in water for 96 hours, the coating is not abnormal, 2 percent and 2 percent sodium carbonate solution are soaked for 2 days, and the surface of the brick is not abnormal. The temperature difference of the heat insulation is more than 0.8 ℃ according to the standard number T/CIE 082-.
Comparative example
Control 1
On the basis of example 1, the first step was eliminated; the procedure was the same as in example 1.
The experimental brick is dried in the open air by natural wind for 30 days continuously, and the surface of the brick is manually drenched with 1% dilute hydrochloric acid solution and 2% sodium carbonate solution every day. Tests show that local blistering occurs on the surface of the brick; the experimental brick is soaked in 2% sodium carbonate solution for 2 days, and the local part of the experimental brick is peeled.
Control 2
On the basis of example 1, the third step was eliminated; the procedure was the same as in example 1.
The experimental brick is dried in the open air by natural wind for 30 days continuously, and the surface of the brick is manually drenched with 1% dilute hydrochloric acid solution and 2% sodium carbonate solution every day. Tests show that local blistering occurs on the surface of the brick; the experimental brick is soaked in 2% sodium carbonate solution for 2 days, and the local part of the experimental brick is peeled.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A use method of a double-component outer wall thin body heat insulation material is characterized by comprising the following steps:
step 1, coating a base surface of the outer wall concrete/outer wall heat-insulating brick by using a first component;
the first component contains: 20-40 parts of water-soluble silicate, 0.05-0.5 part of surfactant, 0.1-1 part of pH regulator, 0.1-0.5 part of reducing agent, 0.1-2 parts of reaction promoter, 0.01-0.5 part of anti-freezing agent and 40-60 parts of deionized water;
the preparation method of the first component comprises the following steps: weighing the surfactant, the pH regulator, the reducing agent, the reaction promoter, the anti-freezing agent and the deionized water according to the composition, mixing, stirring and dispersing in a high-speed shearing kettle with the rotating speed of 800 plus one year 1000rpm, adding the water-soluble silicate while stirring at a high speed until the water-soluble silicate is completely added, wherein the pH value of the first component is more than or equal to 11;
step 2, coating the second component on the surface of the first component;
the second component contains: 8-16 parts of superfine hydrophilic silicon dioxide, 15-25 parts of hollow glass beads, 15-20 parts of styrene-alkyl acrylate emulsion, 15-20 parts of modified styrene-acrylic emulsion, 0.3-5 parts of film-forming additive, 0.2-2 parts of defoaming agent, 0.2-3 parts of preservative, 0.6-4 parts of dispersing agent, 15-30 parts of deionized water and 0-2 parts of pigment;
the preparation method of the second component comprises the following steps: adding the defoaming agent, the dispersing agent and the deionized water into a sand mill according to the composition of the second component, stirring to uniformly disperse the materials, adding the modified styrene-acrylic emulsion, the styrene-alkyl acrylate emulsion, the film-forming assistant and the preservative during stirring, continuously stirring, adding the hollow glass beads, the superfine hydrophilic silicon dioxide and the pigment, and stirring at a high speed of 800 plus 1000rpm, mixing and dispersing to obtain the second component;
and step 3: and after the second component is dried, the first component is used on the surface of the second component to carry out finish coating, and the construction is finished after the second component is dried.
2. The use method of the bi-component external wall thin body heat insulation material as claimed in claim 1, wherein the water-soluble silicate is one or a mixture of sodium silicate, potassium silicate and lithium silicate.
3. The use method of the bi-component thermal insulation material for the exterior wall thin body as claimed in claim 1, wherein the surfactant is polyoxyethylene tridecyl ether or castor oil polyoxyethylene ether ester; the pH regulator is borate, sodium hydroxide or potassium hydroxide; the reducing agent is thiourea acid or sodium thiosulfate inorganic ion reducing agent; the reaction promoter is inorganic halide salt ionic liquid or citrate ions; the anti-freezing agent is carbonate.
4. The use method of the double-component outer wall thin body heat insulation material as claimed in claim 1, wherein in the second component, the specific surface area of the superfine hydrophilic silica is 180-200 m2(ii)/g; the silicon dioxide with the specific surface area is active silicon dioxide powder.
5. The use method of the two-component thermal insulation material for the exterior wall thin body according to claim 1, wherein in the second component, the film forming auxiliary agent is one or a mixture of at least two of ethylene glycol butyl ether, propylene glycol butyl ether and 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate in any ratio; the defoaming agent is one or a mixture of polyether modified organic silicon and polysiloxane defoaming agent; the preservative is David-75 or 1, 2-benzisothiazolin-3-one; the dispersant is polycarboxylate, polyphosphate or polysiloxane.
6. The use method of the two-component thermal insulation material for the exterior wall thin body as claimed in claim 1, wherein in the second component, the pigment is one of rutile type titanium dioxide, iron oxide pigment, phthalocyanine pigment or composite pigment or a mixture thereof.
7. The use method of the bi-component external wall thin body thermal insulation material according to claim 1, characterized in that before the step 1, if cracks of 1-8mm exist on the external wall concrete/external wall insulation brick base surface, the fine cracks are repaired by grouting with inorganic or organic materials.
8. The use method of the double-component outer wall thin body heat insulation material according to claim 7, characterized in that in the step 1, the coating is carried out by adopting a spraying mode; the spraying amount is 100-150mL/m2And the depth of the concrete is more than 5cm after the concrete is infiltrated into the concrete substrate.
9. The use method of the double-component outer wall thin body heat insulation material according to claim 1, characterized in that after the spraying of the first component in the step 1 is finished, the mixture is placed for 30min to 60min, and then the second component coating in the step 2 is carried out; after the step 2 is finished, standing for 2-3h, and then executing the step 3.
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