CN106518157B - Decoration integrated light-weight bearing heat-insulating wallboard and preparation method thereof - Google Patents

Decoration integrated light-weight bearing heat-insulating wallboard and preparation method thereof Download PDF

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CN106518157B
CN106518157B CN201611052241.6A CN201611052241A CN106518157B CN 106518157 B CN106518157 B CN 106518157B CN 201611052241 A CN201611052241 A CN 201611052241A CN 106518157 B CN106518157 B CN 106518157B
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magnesium
based cement
layer
fiber material
shaped steel
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CN106518157A (en
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王岽宇
郝贠洪
侯永利
王常清
侯鹏
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Inner Mongolia Lyuhui Housing Industrialization Technology Co ltd
Inner Mongolia University of Technology
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Inner Mongolia Lyuhui Housing Industrialization Technology Co ltd
Inner Mongolia University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/02—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material with fibres or particles being present as additives in the 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/045—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/06—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/14—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material next to 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/06—Macromolecular compounds fibrous
    • C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B16/0641—Polyvinylalcohols; Polyvinylacetates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0866—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements composed of several layers, e.g. sandwich panels or layered panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire

Abstract

The invention discloses a decoration integrated light-weight bearing heat-insulating wallboard and a preparation method thereof. The preparation method of the decoration integrated light-weight bearing heat-insulating wallboard comprises the following steps: (a) preparing magnesium-based cement foam; (b) preparing a magnesium-based cement fiber material; (c) preparing a lower magnesium-based cement fiber material; (d) conveying to a foaming zone using a conveyor belt; (e) preparing a magnesium-based cement foaming layer; (f) preparing a magnesium-based cement fiber material surface layer I. The decoration integrated light-weight bearing heat-insulating wallboard prepared by the method has the advantages of simple preparation route, energy conservation, environmental protection, waste utilization, low-cost and easily obtained required raw materials, and low production cost.

Description

Decoration integrated light-weight bearing heat-insulating wallboard and preparation method thereof
Technical Field
The invention relates to the field of construction of building materials, in particular to a decorative integrated light-weight bearing heat-insulating wallboard and a preparation method thereof.
Background
Inorganic cementing materials using calcium salt as hydration products are widely used in civil engineering such as buildings, roads, bridges, tunnels, airports and dams, wherein common calcium cementing materials comprise lime, gypsum, silicate cement, aluminate cement and sulphoaluminate cement, and the calcium cementing materials make great contribution to the development of modern civil engineering. The cement foaming board manufactured by using the calcium cementing material in the current market mostly uses lime, gypsum and silicate cement as main raw materials, and the product has the defects of relatively high early strength, large later strength attenuation, poor heat preservation performance, low strength, poor durability and the like.
Similar to calcic cements, there is another class of inorganic cements that use magnesium salts as hydration products, namely magnesia cements, common magnesia cements include magnesium oxychloride cements, magnesium oxysulfide cements, and magnesium phosphate cements. Magnesium is the 4 th element (accounting for 12.7 percent) after the total element composition in the earth is next to iron, oxygen and silicon, and the raw material source is richer than that of a calcareous cementing material. The magnesium oxychloride cement is invented by French chemist S.Sorel in 1867 and is MgO-MgCl composed of active MgO and magnesium chloride solution with a certain concentration 2 -H 2 An O ternary system air hardening cementing material. Compared with hydraulic portland cement (silicate cement) of the invention of UK clay and tile worker J.Aspdin of 1824, the magnesium oxychloride cement has the advantages of light weight, quick setting, early strength, high strength, low alkali, wear resistance, high bonding strength, bittern corrosion resistance and the like, but has poor water resistance, easy moisture absorption, halogen return, easy deformation and corrosion resistanceReinforcing steel bars, etc. The magnesia sulfate cement is magnesia cementing material with similar performance to magnesia oxychloride cement, and consists of active MgO and MgSO with certain concentration 4 MgO-MgSO of solution composition 4 -H 2 An O ternary system air hardening cementing material. Compared with magnesium oxychloride cement, the magnesium oxysulfide cement still has very obvious advantages, such as good high temperature resistance, no moisture absorption and halogen return, and small corrosion effect on reinforcing steel bars. The magnesium phosphate cement is an air hardening cementing material composed of dead burned magnesia powder, soluble phosphate and inducer (such as retarder), and has the advantages of quick setting, early strength, high strength, freezing resistance, high temperature resistance, good volume stability, high binding strength, wear resistance, good rust resistance to steel bars, and the like, and has the defects of high cost and phosphorus resource consumption. Among the three-large magnesia cements, magnesium oxysulfide cement is the new cement that is most promising to replace magnesium oxychloride cement successfully and occupies a larger share in the construction industry. At present, improvement is carried out on the defects of low strength and insufficient hydration of magnesium oxysulfide cement, and industrialization of the cement board is realized.
Disclosure of Invention
The invention aims to provide a decoration integrated light-weight bearing heat-insulating wallboard which is simple in production process, high in strength and convenient to construct and a preparation method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a decorate light-duty bearing heat preservation wallboard of integration, includes magnesium-based cement foaming layer, magnesium-based cement fiber material surface course, steel wire mesh layer first, steel wire mesh layer second, left C shaped steel, right C shaped steel and magnesium-based cement fiber material surface course second, steel wire mesh layer first and steel wire mesh layer respectively are located magnesium-based cement foaming layer in, and steel wire mesh layer first is located magnesium-based cement foaming layer in upper portion, steel wire mesh layer second is located magnesium-based cement foaming layer in lower part, left C shaped steel is from the left side wrapping up the border of magnesium-based cement foaming layer, right C shaped steel is from the right side wrapping up the border of magnesium-based cement foaming layer, left C shaped steel and right C shaped steel the edge of a wing is all with magnesium-based cement foaming layer's surface parallel and level, magnesium-based cement fiber material surface course first and magnesium-based cement fiber material surface course second are firmly bonded with magnesium-based cement foaming layer's both surfaces respectively.
The decorative integrated light bearing heat-insulating wallboard comprises a magnesium-based cement fiber material surface layer I, a left C-shaped steel and a right C-shaped steel, wherein the magnesium-based cement fiber material surface layer I covers part of the upper end face of the left C-shaped steel and part of the upper end face of the right C-shaped steel.
The decorative integrated light bearing heat-insulating wallboard is characterized in that the magnesium-based cement fiber material surface layer II covers the lower end face of the left C-shaped steel and the lower end face of the right C-shaped steel.
The thickness of the magnesium-based cement fiber material surface layer I and the magnesium-based cement fiber material surface layer II of the decoration integrated light-weight bearing heat-insulating wallboard is 10-30mm; the diameters of the steel wires used for the first steel wire mesh layer and the second steel wire mesh layer are 3-5mm; the first steel wire mesh sheet layer and the second steel wire mesh sheet layer are composed of longitudinal steel wires and transverse steel wires which are perpendicular to each other.
The decoration integrated light-weight bearing heat-insulating wallboard is characterized in that the crossing part of the longitudinal steel wire and the transverse steel wire is welded and connected.
The decoration integrated light-weight bearing heat-insulating wallboard is arranged on the same steel wire mesh layer, and the distance between adjacent longitudinal steel wires is 50mm; and in the same steel wire mesh layer, the distance between adjacent transverse steel wires is 50mm.
The decorative integrated light bearing heat-insulating wallboard is characterized in that the magnesium-based cement foaming layer is prepared from the following raw materials in parts by weight through a foaming process: 40-65 parts of magnesia cement, 1-3 parts of foam stabilizer and 3-5 parts of foaming agent; the magnesium-based cement fiber material surface layer I and the magnesium-based cement fiber material surface layer II are prepared by solidifying the following raw materials in parts by weight: 40-65 parts of magnesia cement and 2-7 parts of polypropylene fiber or polyvinyl alcohol fiber.
The preparation method of the decorative integrated light load-bearing heat-insulating wallboard is as follows: 100-200 mesh MgO and 100-200 mesh MgSO 4 And H 2 Mixing the three components according to the mass ratio of (7-12) 1 (20-28), adding inducerThe amount is MgO, mgSO 4 And H 2 And (3) stirring for more than 24 hours, drying, grinding and sieving with a 200-mesh sieve to obtain the magnesia cement, wherein the total mass of the three components is 0.5-3 wt%.
The preparation method of the decorative integrated light-weight bearing heat-insulating wallboard comprises the following steps of: adding 200-400 mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) (20-30), stirring, heating to 60-80 ℃ and keeping for 2-5 hours, filtering and drying; adding tannic acid aqueous solution into the obtained solid product, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 5-10wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1 (20-30), heating to 90-100 ℃ and keeping for 5-10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain the inducer.
The decorative integrated light-weight bearing heat-insulating wallboard is characterized in that the inducer consists of a component A and a component B, and the preparation method of the component A is as follows: adding 200-400 mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) (20-30), stirring, heating to 60-80 ℃ and keeping for 2-5 hours, filtering and drying; adding the obtained solid product into tannic acid water solution, wherein the mass fraction of tannic acid in the tannic acid water solution is 5-10wt%, the mass ratio of the solid product to the tannic acid water solution is 1 (20-30), heating to 90-100 ℃ and keeping for 5-10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of triethanolamine in the triethanolamine water solution is 3-5wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1 (10-20), stirring, heating to 50-70 ℃ and keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-20), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15wt%, and the component B is obtained by filtering, drying, crushing and sieving with a 100-mesh sieve.
The method for adding the inducer into the decorative integrated light-weight bearing heat-insulating wallboard comprises the following steps of: firstly adding a component A, wherein the addition amount of the component A is MgO and MgSO 4 And H 2 0.5-1wt% of the total mass of the three components, stirringStirring for more than 24 hours; then adding a component B, wherein the addition amount of the component B is MgO and MgSO 4 And H 2 And (3) stirring for more than 24 hours, wherein the total mass of the O and the O is 1-2 wt%.
The decorative integrated light bearing heat-insulating wallboard is characterized in that the magnesium-based cement foaming layer is prepared from the following raw materials in parts by weight through a foaming process: 40-65 parts of magnesia cement, 1-3 parts of pretreated fly ash, 1-3 parts of foam stabilizer and 3-5 parts of foaming agent, wherein the addition amount of the pretreated fly ash is 10-50wt% of MgO used in the preparation of the magnesia cement; the magnesium-based cement fiber material surface layer I and the magnesium-based cement fiber material surface layer II are prepared by solidifying the following raw materials in parts by weight: 40-65 parts of magnesia cement, 2-7 parts of pretreated fly ash and polypropylene fiber or polyvinyl alcohol fiber, wherein the addition amount of the pretreated fly ash is 10-50wt% of MgO mass used in the preparation of the magnesia cement;
the preparation method of the magnesia cement comprises the following steps: 100-200 mesh MgO and 100-200 mesh MgSO 4 And H 2 Mixing O with (7-12) 1 (20-28), and adding inducer with MgO and MgSO 4 And H 2 0.5-3wt% of the total mass of the three components, stirring for more than 24 hours, drying, grinding and sieving with a 200-mesh sieve to obtain magnesia cement; the inducer consists of a component A and a component B, wherein the preparation method of the component A comprises the following steps: adding 200-400 mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) (20-30), stirring, heating to 60-80 ℃ and keeping for 2-5 hours, filtering and drying; adding the obtained solid product into tannic acid water solution, wherein the mass fraction of tannic acid in the tannic acid water solution is 5-10wt%, the mass ratio of the solid product to the tannic acid water solution is 1 (20-30), heating to 90-100 ℃ and keeping for 5-10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of triethanolamine in the triethanolamine water solution is 3-5wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1 (10-20), stirring, heating to 50-70 ℃ and keeping for 12-24 hours, filtering and drying; the solid obtained was then driedThe product is added into a silane coupling agent solution, and the mass ratio of the solid product to the silane coupling agent solution is 1: (5-15), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15wt%, and the component B is obtained by filtering, drying, crushing and sieving with a 100-mesh sieve; the inducer adding method comprises the following steps: firstly adding a component A, wherein the addition amount of the component A is MgO and MgSO 4 And H 2 0.5-1wt% of the total mass of the three components, and stirring for more than 24 hours; then adding a component B, wherein the addition amount of the component B is MgO and MgSO 4 And H 2 1-2wt% of the total mass of the three components, and stirring for more than 24 hours;
the preparation method of the pretreated fly ash comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of triethanolamine in the triethanolamine water solution is 3-5wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1 (10-20), stirring, heating to 50-70 ℃ and keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-20), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15wt%, and the pretreated fly ash is obtained after filtering, drying and crushing and sieving with a 100-mesh sieve.
The foam stabilizer is one or two or three of silicone amide, dodecyl dimethyl amine oxide and alkyl alcohol amide; the foaming agent is one or two of sodium dodecyl sulfate and sodium fatty alcohol polyoxyethylene ether sulfate.
The preparation method of the decoration integrated light-weight bearing heat-insulating wallboard specifically comprises the following steps:
(a) Preparing magnesium-based foaming cement;
(b) Preparing a magnesium-based cement fiber material;
(c) Placing the magnesium-based cement fiber material on a vibrating bed for vibration molding to prepare a magnesium-based cement fiber material surface layer II;
(d) The conveying speed of the conveying belt is adjusted by utilizing the conveying belt to convey to the foaming area, so that the time from the vibrating bed position to the foaming area is just the initial setting time of the magnesium-based cement fiber material;
(e) Respectively placing left C-shaped steel and right C-shaped steel at the left and right ends of the upper surface of the magnesium-based cement fiber material surface layer II, sequentially welding the two ends of the steel wire mesh layer I and the steel wire mesh layer II to the inner sides of webs of the left C-shaped steel and the right C-shaped steel respectively, then manufacturing a magnesium-based cement foaming layer on the magnesium-based cement fiber material surface layer II, controlling the thickness of the magnesium-based cement foaming layer to be the same as the height of the left C-shaped steel and the right C-shaped steel, and enabling the upper flange and the lower flange of the left C-shaped steel and the upper flange and the lower flange of the right C-shaped steel to wrap the left end and the right end of the magnesium-based cement foaming layer;
(f) And (3) making a magnesium-based cement fiber material surface layer I on the upper surface of the magnesium-based cement foaming layer, and cutting the upper surface of the magnesium-based cement fiber material surface layer I to be smooth by using a cutting machine to obtain the decorative integrated light-weight bearing heat-insulating wallboard.
The beneficial effects of the invention are as follows:
(1) The decoration integrated light-weight bearing heat-insulating wallboard prepared by the invention has the advantages of simple preparation route, energy conservation, environmental protection and waste utilization;
(2) The decoration integrated light weight bearing heat preservation wallboard prepared by the invention has light weight and high strength, can be used as an inner bearing wall, an outer bearing wall and a partition wall of a multi-layer house, has small dead weight and good shock resistance;
(3) The decoration integrated light-weight bearing heat-insulating wallboard prepared by the invention has the advantages of small heat conductivity, large heat capacity, good shock resistance, high softening coefficient, good water resistance, good heat insulation and sound insulation effects;
(4) The impact resistance and the crack resistance are high, a painting coating can be directly made on the surface or a decorative plate can be stuck and hung, and the decoration integration degree is high;
(5) The industrialization degree is high, the engineering prefabrication, the on-site assembly and the construction speed are high, the workability of the plate is good, and the plate can be sawn and nailed; the density is small (only 70 percent of common cement products), and the emission of the construction site is small.
Drawings
Fig. 1: the invention relates to a structural schematic diagram of a decoration integrated light-weight bearing heat-insulating wallboard;
fig. 2: the invention relates to a structural schematic diagram of a decoration integrated light-weight bearing heat-insulating wallboard;
fig. 3: the invention relates to a splayed protruding unit structure schematic diagram of a decoration integrated light load-bearing heat-insulating wallboard.
1-magnesium-based cement foaming layer; 2-magnesium-based cement fiber material surface layer I; 3-a first steel wire mesh layer; 4-a second steel wire mesh layer; 5-left C-shaped steel; 6-right C-shaped steel; 7-a second surface layer of the magnesium-based cement fiber material; 60-splayed protruding units; 61-splayed projections; 62-splayed lugs rotated 90 ° clockwise; 63-splayed projections rotated 90 ° counterclockwise; 64-inverted splayed projections.
Detailed Description
Example 1
The preparation method of the decoration integrated light-weight bearing heat-insulating wallboard specifically comprises the following steps:
(a) Preparation of magnesium-based foamed cement
65 kg of magnesium salt cement, 3 kg of foam stabilizer and 5 kg of foaming agent, and adding water according to a water-cement ratio of 0.45, and stirring to prepare the magnesium-based cement foaming slurry. The foam stabilizer is silicone amide; the foaming agent is sodium dodecyl sulfate.
The preparation method of the magnesia cement comprises the following steps: 100-200 mesh MgO and 100-200 mesh MgSO 4 And H 2 Mixing the three components according to the mass ratio of 9:1:25, and then adding an inducer, wherein the addition amount of the inducer is MgO and MgSO 4 And H 2 And (3) stirring for more than 24 hours by 1 weight percent of the total mass of the three components, drying, grinding and sieving with a 200-mesh sieve to obtain the magnesia cement.
The preparation method of the inducer comprises the following steps: adding 200-400 mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is 15:22, stirring, heating to 80 ℃ and keeping for 5 hours, filtering and drying; adding tannic acid aqueous solution into the obtained solid product, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 8wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1:20, heating to 90 ℃ and keeping for 10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain the inducer.
(b) Preparation of magnesium-based cement fiber material
65 kg of magnesia cement and 5 kg of polyvinyl alcohol fiber, adding water according to a water-cement ratio of 0.45, and stirring to prepare the magnesium-based cement fiber material slurry.
The preparation method of the magnesia cement comprises the following steps: 100-200 mesh MgO and 100-200 mesh MgSO 4 And H 2 Mixing the three components according to the mass ratio of 9:1:25, and then adding an inducer, wherein the addition amount of the inducer is MgO and MgSO 4 And H 2 And (3) stirring for more than 24 hours by 1 weight percent of the total mass of the three components, drying, grinding and sieving with a 200-mesh sieve to obtain the magnesia cement.
The preparation method of the inducer comprises the following steps: adding 200-400 mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is 15:22, stirring, heating to 80 ℃ and keeping for 5 hours, filtering and drying; adding tannic acid aqueous solution into the obtained solid product, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 8wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1:20, heating to 90 ℃ and keeping for 10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain the inducer.
(c) Placing the magnesium-based cement fiber material slurry on a vibrating bed for vibration molding to prepare a magnesium-based cement fiber material surface layer II 7 with the thickness of 30mm;
(d) The conveying speed of the conveying belt is adjusted by utilizing the conveying belt to convey to the foaming area, so that the time from the vibrating bed position to the foaming area is just the initial setting time of the magnesium-based cement fiber material;
(e) Placing left C-shaped steel 5 and right C-shaped steel 6 at the left and right ends of the upper surface of the magnesium-based cement fiber material surface layer II 7 respectively, sequentially welding the two ends of the steel wire mesh layer I3 and the steel wire mesh layer II 4 to the inner sides of webs of the left C-shaped steel 5 and the right C-shaped steel 6 respectively, and then manufacturing a magnesium-based cement foaming layer on the magnesium-based cement fiber material surface layer II 7, wherein the thickness of the magnesium-based cement foaming layer is controlled to be the same as the height of the left C-shaped steel 5 and the right C-shaped steel 6, and the left and right ends of the magnesium-based cement foaming layer 1 are wrapped by the upper flange and the lower flange of the left C-shaped steel 5 and the right C-shaped steel 6;
(f) And (3) making a magnesium-based cement fiber material surface layer I2 on the upper surface of the magnesium-based cement foaming layer 1, and cutting the upper surface of the magnesium-based cement fiber material surface layer I2 to be flat by using a cutting machine to obtain the decorative integrated light-weight bearing heat-insulating wallboard.
In the embodiment, the diameters of the steel wires used for the first steel wire mesh layer 3 and the second steel wire mesh layer 4 are 5mm, and the steel wires are composed of longitudinal steel wires and transverse steel wires which are perpendicular to each other, and the intersections of the longitudinal steel wires and the transverse steel wires are welded and connected; in the first steel wire mesh layer 3 and the second steel wire mesh layer 4, the distance between adjacent longitudinal steel wires is 50mm, and the distance between adjacent transverse steel wires is 50mm. The flanges of the left C-shaped steel 5 and the right C-shaped steel 6 are flush with the surface of the magnesium-based cement foaming layer 1, and the magnesium-based cement fiber material surface layer I2 and the magnesium-based cement fiber material surface layer II 7 are firmly bonded with the two surfaces of the magnesium-based cement foaming layer 1 respectively. And the magnesium-based cement fiber material surface layer I2 covers part of the end face of the left C-shaped steel 5 and part of the end face of the right C-shaped steel 6. And the second magnesium-based cement fiber material surface layer 7 covers part of the end face of the left C-shaped steel 5 and part of the end face of the right C-shaped steel 6.
A splayed protruding unit 60 is arranged on one surface of the magnesium-based cement fiber material surface layer I2 bonded with the magnesium-based cement foaming layer 1, and the splayed protruding unit 60 and the magnesium-based cement fiber material surface layer I2 are integrally formed; the splayed protruding unit 60 is arranged on the surface of the magnesium-based cement fiber material surface layer II 7, which is bonded with the magnesium-based cement foaming layer 1, and the splayed protruding unit 60 and the magnesium-based cement fiber material surface layer II 7 are integrally formed. As shown in fig. 3, each splayed-protrusion unit 60 is composed of one splayed-protrusion 61, one splayed-protrusion rotated 90 ° clockwise protrusion 62, one splayed-protrusion rotated 90 ° counterclockwise protrusion 63, and one inverted splayed-protrusion 64. Thus, the bonding between the magnesium-based cement fiber material surface layer 2 and the magnesium-based cement foaming layer 1 is tighter, the magnesium-based cement fiber material surface layer is not easy to separate, and the bonding force is improved by more than 10% compared with the bonding without the splayed protruding units 60.
Example 2
This embodiment differs from embodiment 1 in that:
the inducer consists of a component A and a component B, wherein the preparation method of the component A comprises the following steps: adding 200-400 mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is 8:27, stirring, heating to 60 ℃ and keeping for 4 hours, filtering and drying; adding the obtained solid product into a tannic acid aqueous solution, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 10wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1:30, heating to 100 ℃ and keeping for 5 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of the triethanolamine water solution is 5wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1:15, stirring, heating to 70 ℃ and keeping for 24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1:10, the mass fraction of the silane coupling agent in the silane coupling agent solution is 10wt%, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain the component B.
The inducer adding method comprises the following steps: firstly adding a component A, wherein the addition amount of the component A is MgO and MgSO 4 And H 2 0.5 weight percent of the total mass of the three components, and stirring for more than 24 hours; then adding a component B, wherein the addition amount of the component B is MgO and MgSO 4 And H 2 And (3) stirring for more than 24 hours, wherein the total mass of the O and the O is 1 wt%.
Example 3
This embodiment differs from embodiment 2 in that:
(a) Preparation of magnesium-based foamed cement
65 kg of magnesia cement, 3 kg of pretreated fly ash, 3 kg of foam stabilizer and 5 kg of foaming agent, and adding water according to a water-cement ratio of 0.45, and stirring to prepare the magnesium-based cement foaming slurry. The addition amount of the fly ash after pretreatment is 10 weight percent of the mass of MgO used in the preparation of magnesia cement.
The preparation method of the pretreated fly ash comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of the triethanolamine water solution is 3wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1:12, stirring, heating to 70 ℃ and keeping for 12 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1:16, the mass fraction of the silane coupling agent in the silane coupling agent solution is 15wt%, and the pretreated fly ash is obtained after filtering, drying, crushing and sieving with a 100-mesh sieve.
(b) Preparation of magnesium-based cement fiber material
65 kg of magnesia cement, 5 kg of pretreated fly ash and polyvinyl alcohol fiber, and adding water according to a water-cement ratio of 0.45, and stirring to prepare the magnesium-based cement fiber material slurry. The addition amount of the fly ash after pretreatment is 10 weight percent of the mass of MgO used in the preparation of magnesia cement.
The preparation method of the pretreated fly ash comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of the triethanolamine water solution is 3wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1:12, stirring, heating to 70 ℃ and keeping for 12 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1:16, the mass fraction of the silane coupling agent in the silane coupling agent solution is 15wt%, and the pretreated fly ash is obtained after filtering, drying, crushing and sieving with a 100-mesh sieve.
Example 4
This embodiment differs from embodiment 1 in that: no inducer is added in the preparation of magnesia cement.
Example 5
This embodiment differs from embodiment 4 in that: the added fly ash is the fly ash which is not pretreated.
Test example 1
The difference between this test example and example 1 is that: the first steel wire mesh layer 3, the second steel wire mesh layer 4, the left C-shaped steel 5 and the right C-shaped steel 6 are not used.
Test example 2
The difference between this test example and example 2 is that: the first steel wire mesh layer 3, the second steel wire mesh layer 4, the left C-shaped steel 5 and the right C-shaped steel 6 are not used.
Test example 3
The difference between this test example and example 3 is that: the first steel wire mesh layer 3, the second steel wire mesh layer 4, the left C-shaped steel 5 and the right C-shaped steel 6 are not used.
Test example 4
The difference between this test example and example 4 is that: the first steel wire mesh layer 3, the second steel wire mesh layer 4, the left C-shaped steel 5 and the right C-shaped steel 6 are not used.
Test example 5
The difference between this test example and example 5 is that: the first steel wire mesh layer 3, the second steel wire mesh layer 4, the left C-shaped steel 5 and the right C-shaped steel 6 are not used.
The decorative integrated light weight load bearing thermal insulation wallboard obtained in test examples 1-5 was subjected to performance test, and the results are shown in table 1:
TABLE 1
Test example 1 Test example 2 Test example 3 Test example 4 Test example 5
Compressive strength/MPa (28 days) 109.7 120.1 128.6 55.4 121.3
Initial setting time/h 8.8 9.2 9.5 4.3 9.1
Final setting time/h 12.2 12.0 11.3 8.2 11.5
Coefficient of compressive Strength softening (180 days) 0.82 0.98 1.05 Severe cracking 0.91
Solubility in Water g/100g Water (25 ℃ C.) 0.86 0.036 0.034 31.2 0.035
Corrosion resistance coefficient 0.95 1.02 1.21 0.43 1.03
Steel bar rustEtch rate 5μm/a 0.8μm/a 0.3μm/a 20μm/a 1.5μm/a
As can be seen from table 1: after the inducer is added, the compressive strength of the magnesium oxysulfide cement can be obviously enhanced, and especially, the inducer which comprises a component A and a component B is added, so that the compressive strength of the magnesium oxysulfide cement can be further enhanced; although the initial setting time of the magnesium oxysulfate cement is prolonged after the inducer is added, the initial final setting time difference is shortened, which means that the setting action of the magnesium oxysulfide cement added with the inducer can accelerate setting and hardening once the setting action is started, and the magnesium oxysulfide cement is suitable for site construction requiring rapid setting.
The test method for the compressive strength softening coefficient in table 1 is as follows: the decoration integrated light weight bearing heat preservation wallboards prepared in test examples 1-5 are maintained for 28 days respectively, soaked in water for 180 days, then the compressive strength is tested respectively, and the compressive strength softening coefficient is calculated. Compressive strength softening coefficient = compressive strength after soaking/compressive strength before soaking.
The test methods for the corrosion resistance coefficients in table 1 are as follows: and (3) curing the decorative integrated light-weight bearing heat-insulating wallboard prepared in the test examples 1-5 for 28 days respectively, soaking the wallboard in a magnesium chloride solution with the mass fraction of 31wt% for 180 days, then testing the compressive strength after soaking respectively, and calculating the corrosion resistance coefficient. Corrosion resistance coefficient = post-soak compressive strength/pre-soak compressive strength.
The test method for the rust rate of the steel bars in table 1 is as follows: the magnesia cement in each of test examples 1 to 5 was hydrated for 200 hours, and the corrosion current and corrosion rate of the steel bar in the magnesia cement were measured by a two-electrode linear polarization method using a CHI660C electrochemical workstation.
Comparative example 1
The difference between this comparative example and example 1 is that: the magnesia cement was replaced with ordinary portland cement (425 cement).
Comparative example 2
The difference between this comparative example and example 2 is that: the magnesia cement was replaced with ordinary portland cement (425 cement).
Comparative example 3
The difference between this comparative example and example 3 is that: the magnesia cement was replaced with ordinary portland cement (425 cement).
Comparative example 4
The difference between this comparative example and example 4 is that: the magnesia cement was replaced with ordinary portland cement (425 cement).
Comparative example 5
The difference between this comparative example and example 5 is that: the magnesia cement was replaced with ordinary portland cement (425 cement).
The wallboard obtained in examples 1 to 5 and comparative examples 1 to 5 were tested for bearing capacity under the same conditions, respectively, and the results were as follows:
example 1 compares with comparative example 1: the bearing capacity of the wallboard is improved by 6.9%;
example 2 compares with comparative example 2: the bearing capacity of the wallboard is improved by 11.5%;
example 3 compares with comparative example 3: the bearing capacity of the wallboard is improved by 14.9%;
example 4 compares with comparative example 4: the bearing capacity of the wallboard is reduced by 11.3%;
example 5 compares with comparative example 5: the bearing capacity of the wallboard is improved by 11.8%.
It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims (7)

1. The integrated decorative light-weight bearing heat-insulating wallboard is characterized by comprising a magnesium-based cement foaming layer (1), a magnesium-based cement fiber material surface layer I (2), a steel wire mesh layer I (3), a steel wire mesh layer II (4), a left C-shaped steel (5), a right C-shaped steel (6) and a magnesium-based cement fiber material surface layer II (7), wherein the steel wire mesh layer I (3) and the steel wire mesh layer II (4) are respectively positioned in the magnesium-based cement foaming layer (1), the steel wire mesh layer I (3) is positioned at the upper part in the magnesium-based cement foaming layer (1), the steel wire mesh layer II (4) is positioned at the lower part in the magnesium-based cement foaming layer (1), the left C-shaped steel (5) wraps the edge of the magnesium-based cement foaming layer (1) from the left side, the right C-shaped steel (6) wraps the edge of the cement foaming layer (1) from the right side, the flanges of the left C-shaped steel (5) and the right C-shaped steel (6) are respectively flush with the magnesium-based cement foaming layer (1) and the magnesium-based cement fiber material surface layer (7) are firmly bonded with the magnesium-based cement fiber material surface layer (1);
the magnesium-based cement foaming layer (1) is prepared from the following raw materials in parts by weight through a foaming process: 40-65 parts of magnesia cement, 1-3 parts of pretreated fly ash, 1-3 parts of foam stabilizer and 3-5 parts of foaming agent, wherein the addition amount of the pretreated fly ash is 10wt% of MgO used in the preparation of the magnesia cement; the magnesium-based cement fiber material surface layer I (2) and the magnesium-based cement fiber material surface layer II (7) are prepared by solidifying the following raw materials in parts by weight: 40-65 parts of magnesia cement, 2-7 parts of pretreated fly ash and polypropylene fiber or polyvinyl alcohol fiber, wherein the addition amount of the pretreated fly ash is 10wt% of MgO mass used in the preparation of the magnesia cement;
the preparation method of the magnesia cement comprises the following steps: 100-200 mesh MgO and 100-200 mesh MgSO 4 And H 2 Mixing O with (7-12) 1 (20-28), and adding inducer with MgO and MgSO 4 And H 2 0.5-3wt% of the total mass of O, stirring for more than 24 hours, drying and grindingGrinding, and sieving with a 200-mesh sieve to obtain magnesia cement;
the inducer consists of a component A and a component B, wherein the preparation method of the component A comprises the following steps: adding 200-400 mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) (20-30), stirring, heating to 60-80 ℃ and keeping for 2-5 hours, filtering and drying; adding the obtained solid product into tannic acid water solution, wherein the mass fraction of tannic acid in the tannic acid water solution is 5-10wt%, the mass ratio of the solid product to the tannic acid water solution is 1 (20-30), heating to 90-100 ℃ and keeping for 5-10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of triethanolamine in the triethanolamine water solution is 3-5wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1 (10-20), stirring, heating to 50-70 ℃ and keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-15), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15wt%, and the component B is obtained by filtering, drying, crushing and sieving with a 100-mesh sieve; the inducer adding method comprises the following steps: firstly adding a component A, wherein the addition amount of the component A is MgO and MgSO 4 And H 2 0.5-1wt% of the total mass of the three components, and stirring for more than 24 hours; then adding a component B, wherein the addition amount of the component B is MgO and MgSO 4 And H 2 1-2wt% of the total mass of the three components, and stirring for more than 24 hours;
the preparation method of the pretreated fly ash comprises the following steps: adding 200-400 mesh fly ash into triethanolamine water solution, wherein the mass fraction of triethanolamine in the triethanolamine water solution is 3-5wt%, the mass ratio of the fly ash to the triethanolamine water solution is 1 (10-20), stirring, heating to 50-70 ℃ and keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-20), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15wt%, and the pretreated fly ash is obtained after filtering, drying and crushing and sieving with a 100-mesh sieve.
2. The decoration integrated light-weight bearing heat preservation wallboard according to claim 1, wherein the magnesium-based cement fiber material surface layer I (2) covers part of the upper end face of the left C-shaped steel (5) and part of the upper end face of the right C-shaped steel (6).
3. The decoration integrated light-weight bearing heat preservation wallboard according to claim 2, wherein the magnesium-based cement fiber material surface layer II (7) covers part of the lower end face of the left C-shaped steel (5) and part of the lower end face of the right C-shaped steel (6).
4. The decoration integrated light weight bearing heat preservation wallboard according to claim 3, wherein the thickness of the magnesium-based cement fiber material surface layer I (2) and the magnesium-based cement fiber material surface layer II (7) is 10-30mm; the diameters of the steel wires used in the first steel wire mesh layer (3) and the second steel wire mesh layer (4) are 3-5mm; the first steel wire mesh layer (3) and the second steel wire mesh layer (4) are composed of longitudinal steel wires and transverse steel wires which are perpendicular to each other.
5. The decorative integrated lightweight load bearing thermal wall panel of claim 4, wherein said longitudinal steel wire and said transverse steel wire are welded at their intersections.
6. The decoration integrated light weight bearing heat preservation wallboard according to claim 5, wherein the distance between adjacent longitudinal steel wires is 50mm in the same steel wire mesh layer; and in the same steel wire mesh layer, the distance between adjacent transverse steel wires is 50mm.
7. The method for preparing the decoration integrated light weight bearing heat preservation wallboard according to any one of claims 1 to 6, which is characterized by comprising the following steps:
(a) Preparing magnesium-based foaming cement;
(b) Preparing a magnesium-based cement fiber material;
(c) Placing the magnesium-based cement fiber material on a vibrating bed for vibration molding to prepare a magnesium-based cement fiber material surface layer II (7);
(d) The conveying speed of the conveying belt is adjusted by utilizing the conveying belt to convey to the foaming area, so that the time from the vibrating bed position to the foaming area is just the initial setting time of the magnesium-based cement fiber material;
(e) Placing left C-shaped steel (5) and right C-shaped steel (6) at the left and right ends of the upper surface of the magnesium-based cement fiber material surface layer II (7), sequentially welding the two ends of the steel wire mesh layer I (3) and the steel wire mesh layer II (4) to the inner sides of webs of the left C-shaped steel (5) and the right C-shaped steel (6), and then manufacturing a magnesium-based cement foaming layer on the magnesium-based cement fiber material surface layer II (7), wherein the thickness of the magnesium-based cement foaming layer is controlled to be the same as the heights of the left C-shaped steel (5) and the right C-shaped steel (6), and the upper flange and the lower flange of the left C-shaped steel (5) and the right C-shaped steel (6) wrap the left end and the right end of the magnesium-based cement foaming layer (1);
(f) And (3) making a magnesium-based cement fiber material surface layer I (2) on the upper surface of the magnesium-based cement foaming layer (1), and cutting and flattening the upper surface of the magnesium-based cement fiber material surface layer I (2) by using a cutting machine to obtain the decorative integrated light-weight bearing heat-insulating wallboard.
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用聚合物水泥砂浆作钢管防锈涂层;吕茂棠;《水力发电》;19870521(第05期);第48-50+21页 *

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