CN111058293B - Baking method of modified inorganic powder composite building facing sheet - Google Patents

Baking method of modified inorganic powder composite building facing sheet Download PDF

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Publication number
CN111058293B
CN111058293B CN201811201313.8A CN201811201313A CN111058293B CN 111058293 B CN111058293 B CN 111058293B CN 201811201313 A CN201811201313 A CN 201811201313A CN 111058293 B CN111058293 B CN 111058293B
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facing sheet
inorganic powder
heating
layer
modified inorganic
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CN111058293A (en
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顾秾
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Nanjing Hechuang Basso Environmental Protection And Energy Saving Technology Co ltd
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Energy Efficiency Technology Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0022—Glass fibres
    • 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
    • C09D201/00—Coating compositions based on unspecified macromolecular compounds
    • 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
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • D—TEXTILES; PAPER
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    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0038—Polyolefin fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/042—Acrylic polymers
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    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyolefin or polystyrene (co-)polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
    • D06N3/186—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials one of the layers is on one surface of the fibrous web and the other layer is on the other surface of the fibrous web
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0218—Vinyl resin fibres
    • D06N2201/0236—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06N2211/00—Specially adapted uses
    • D06N2211/06—Building materials
    • D06N2211/063—Wall coverings

Abstract

The invention discloses a baking method of a modified inorganic powder composite building veneer sheet, which comprises the following steps: (a) firstly, standing a wet-state facing sheet which is formed by sequentially compounding a surface layer (1), a toughness-fixing layer (2) and a reinforcing layer (3) for 5-40 min; (b) heating the standing facing sheet at 200-300 ℃ for 3-10 min under normal pressure; (c) then heating the facing sheet at 30-80 ℃ under 1-3 atmospheric pressures for 0.5-3 h; (d) heating the facing sheet at 80-150 ℃ under normal pressure for 10-60 min, and then standing and cooling for 10-40 min; (e) finally, demoulding, cutting, warehousing and storing the dried facing sheet. By adopting the baking method, the facing sheet with the large size of 1-2.4 m, the width of 0.4-1.2 m and the thickness of 1.5-8 mm can be completely dried, and the surface does not crack.

Description

Baking method of modified inorganic powder composite building facing sheet
Technical Field
The invention relates to a baking method of decorative materials, in particular to a baking method of a modified inorganic powder composite building facing sheet.
Background
The modified inorganic powder composite building facing sheet has the advantages of light weight, good flexibility and the like, and becomes a building decorative material which is popular in the market. The modified inorganic powder composite building facing sheet in the prior art is generally in a structure with a small size, one by one, and is stuck on a wall surface one by using a binder when in use. The sticking of the facing sheets is always a construction problem, the size of each facing sheet needs to be marked on the wall surface, each facing sheet needs to be horizontal and vertical, the requirement on the skill of workers is high, the labor intensity is high, the construction efficiency is low, and the sticking of the facing sheets in place is difficult to ensure in many times. The small-size veneer sheet needs a set of moulds with corresponding sizes in each size in the preparation process, the problem of mould size shrinkage is serious along with the increase of demoulding times, and the moulds need to be frequently manufactured and replaced, so that the cost is increased.
In order to improve the construction efficiency and reduce the manufacturing cost of the die, attempts have been made to prepare large-sized facing sheets, which have the problem of difficult drying during the baking process, and improper baking method can cause cracking of the sheet surface and thus cannot be used.
Disclosure of Invention
The purpose of the invention is as follows: in view of the above problems, the present invention provides a baking method for a modified inorganic powder composite architectural surface sheet, which can completely dry the prepared large-sized surface sheet without cracking on the surface.
The technical scheme is as follows: in order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: the baking method of the modified inorganic powder composite building facing sheet comprises the following steps:
(a) firstly, standing a wet-state facing sheet which is formed by sequentially compounding a surface layer (1), a toughness-fixing layer (2) and a reinforcing layer (3) for 5-40 min;
(b) heating the standing facing sheet at 200-300 ℃ for 3-10 min under normal pressure;
(c) then heating the facing sheet at 30-80 ℃ under 1-3 atmospheric pressures for 0.5-3 h;
(d) heating the facing sheet at 80-150 ℃ under normal pressure for 10-60 min, and then standing and cooling for 10-40 min;
(e) finally, demoulding, cutting, warehousing and storing the dried facing sheet.
Further, microwave or infrared heating is adopted in the step (b), gas or electric heating is adopted in the step (c), and a heating mode of alternately performing microwave or infrared heating and gas or electric heating is adopted in the step (d).
Further, mixing and homogenizing the pretreated inorganic powder, water-soluble high-molecular polymer emulsion, water and polyether auxiliary agent, and spraying or blade coating the mixture on the surface of a mold to obtain the surface layer (1); paving the toughness-fixing layer (2) on the surface of the surface layer (1); mixing and homogenizing the pretreated inorganic powder, water-soluble high-molecular polymer emulsion, water and polyether auxiliary agent, and spraying or blade coating the mixture on the surface of the tough fixing layer (2) to obtain the reinforcing layer (3).
Furthermore, the tough fixing layer (2) is glass fiber mesh cloth, polyvinyl chloride mesh cloth or polyethylene mesh cloth. The gridding cloth can play a role of a framework, and the tension and the tearing resistance of the facing sheet are enhanced.
Furthermore, the thickness of the surface layer (1) is 0.5-4 mm.
Furthermore, the thickness of the reinforcing layer (3) is 0.5-4 mm.
Furthermore, the dimension of the facing sheet is 1-2.4 m in length, 0.4-1.2 m in width and 1.5-8 mm in thickness.
Further, the inorganic powder is any one or more of cement, soil, stone powder or sand.
Further, the water-soluble high molecular polymer emulsion is any one or more of vinyl acetate emulsion, acrylic emulsion, polyvinyl alcohol emulsion, water-based polyurethane emulsion and silicone-acrylic emulsion.
Has the advantages that: by adopting the baking method, the facing sheet with the large size of 1-2.4 m, the width of 0.4-1.2 m and the thickness of 1.5-8 mm can be completely dried, and the surface does not crack; compared with the facing sheet with a smaller size of 0.24m in length and 0.06m in width in the prior art, the facing sheet is of a large-size structure, is convenient to paste, improves the construction efficiency, and can be flexibly pasted by combining cutting and sewing according to the design requirements of different wall surfaces; the demolding times are reduced, and the mold manufacturing cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a modified inorganic powder composite architectural facing sheet.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, a modified inorganic powder composite architectural surface sheet comprises a surface layer 1, a reinforcing layer 3 and a tough layer 2 arranged between the surface layer 1 and the reinforcing layer 3.
Example 1
1. Preparing a wet-state veneer sheet with the length of 1.2m, the width of 0.6m and the thickness of 1.5-3 mm:
(S1) fully and uniformly mixing 100kg of pretreated inorganic powder with 40-400 meshes, 1-30 kg of water-soluble high polymer emulsion, 5-50 kg of water, 1-10 kg of inorganic pigment and 1-5 kg of polyether auxiliary agent (or converting the mixture according to the proportion), and spraying or scraping the mixture on a mould with the texture length of 1.2m multiplied by the width of 0.6m to prepare a surface layer 1 with the thickness of 0.5-1.5 mm;
(S2) adhering a layer of surface density of 30-70 g/m to the surface of the wet surface layer 12And the mesh size is 4 multiplied by 4mm to 5 multiplied by 5mm, the mesh cloth can not be compacted, otherwise the texture surface can be influenced. The gridding cloth can play a role of a framework, and the tension and the tearing resistance of the facing sheet are enhanced.
(S3) fully and uniformly mixing 100kg of pretreated inorganic powder with 40-400 meshes, 1-30 kg of water-soluble high polymer emulsion, 5-50 kg of water, 1-10 kg of inorganic pigment and 1-5 kg of polyether auxiliary agent (or converting the mixture according to the proportion), and spraying or scraping the mixture on the tough fixing layer 2 to prepare the reinforcing layer 3 with the thickness of 0.5-1.5 mm. The reinforcing layer 3 needs to cover the mesh cloth completely, otherwise the product yield is reduced.
The inorganic powder is any one or more of cement, soil, stone powder or sand, wherein the cement can be 325 or 425 cement, and the soil can be natural original soil or urban construction waste soil. The inorganic powder is pretreated before use, namely, screened, ground, mixed and homogenized. The water-soluble high molecular polymer emulsion is selected from one or more of vinyl acetate emulsion, acrylic emulsion, polyvinyl alcohol emulsion, water-based polyurethane emulsion and silicone-acrylic emulsion. The preparation of the modified inorganic powder composite building facing sheet belongs to the prior art, and is not described herein.
The surface patterns of the facing sheet are given by the mold, the shape of the patterns on the surface of the mold can be made according to the needs of users, and the patterns can be made into wood grains, leather grains, stone grains, brick grains and other shapes.
2. Baking the facing sheet:
(a) standing the prepared wet-state facing sheet at normal temperature for 5-15 min, wherein bubbles in the facing sheet can be discharged after standing for a period of time;
(b) heating the surface-decorated sheet after standing at 200-300 ℃ for 3-5 min by using microwave or infrared under normal pressure, rapidly heating the surface-decorated sheet at high temperature, starting movement of water and organic matters in the surface-decorated sheet, and strictly controlling the high-temperature heating time because the microwave or infrared heating speed is high, otherwise, cracking the sheet;
(c) then, heating the facing sheet for 0.5-1 h at 30-80 ℃ under 1-3 atmospheric pressures by using fuel gas or electricity, maintaining in a medium-low temperature and pressure environment to facilitate water discharge, and heating at a relatively slow heating speed by using the fuel gas or the electricity because the heating time in the step is relatively long;
(d) heating the facing sheet at 80-150 ℃ for 10-30 min under normal pressure, cooling at normal temperature for 10-30 min, and in order to gasify and discharge water molecules and avoid cracking of the sheet, adopting a heating mode of alternately carrying out microwave or infrared heating and gas or electric heating, wherein the microwave or infrared heating is firstly carried out for no more than 5min, and then the gas or electric heating is carried out for 10 min;
(e) finally, demoulding, cutting, warehousing and storing the dried facing sheet.
And observing the surface of the facing sheet to have no water stain and no crack.
Example 2
1. Preparing a wet-state facing sheet with the length of 2.4m, the width of 1.2m and the thickness of 3-6 mm:
the preparation steps are the same as example 1, different from example 1, a die with the length of 2.4m multiplied by the width of 1.2m is selected, the thickness of the surface layer 1 is 1.5-3 mm, and a layer with the surface density of 60-80 g/m is tightly adhered to the surface of the wet surface layer 12The polyethylene mesh cloth with the mesh size of 5 multiplied by 5 mm-8 multiplied by 8mm, and the thickness of the reinforcing layer 1 is 1.5-3 mm.
2. Baking the facing sheet:
(a) standing the wet veneer sheet for 15-30 min at normal temperature;
(b) heating the surface-decorated sheet after standing at 200-300 ℃ for 5-10 min by adopting microwave or infrared under normal pressure;
(c) then heating the facing sheet at 30-80 ℃ under 1-3 atmospheric pressures for 1.5-2.5 h by using fuel gas or electricity;
(d) heating the facing sheet at 80-150 ℃ for 30-60 min under normal pressure, cooling at normal temperature for 20-40 min, adopting a heating mode of alternately carrying out microwave or infrared heating and gas or electric heating, firstly heating by microwave or infrared for no more than 5min, and then heating by gas or electric heating for 10 min;
(e) finally, demoulding, cutting, warehousing and storing the dried facing sheet.
And observing the surface of the facing sheet to have no water stain and no crack.
Example 3
1. Preparing a 1m wet veneer sheet with a width of 0.4m and a thickness of 6-8 mm:
the preparation steps are the same as example 1, different from example 1 in that a mould with the length of 1m multiplied by the width of 0.4m is selected, the thickness of the surface layer 1 is 2-3 mm, and a layer with the surface density of 60-100 g/m is tightly adhered to the surface of the wet surface layer 12The polyvinyl chloride mesh cloth with the mesh size of 5 multiplied by 6 mm-10 multiplied by 10mm, the thickness of the reinforcing layer 3 is 2-3 mm, and in order to increase the thickness of the facing sheet, a layer of surface density of 60-100 g/m is tightly attached to the surface of the reinforcing layer 32And polyvinyl chloride mesh cloth with the mesh size of 5 multiplied by 6mm to 10 multiplied by 10mm, and then a reinforcing layer 3 with the thickness of 2 mm to 3mm is sprayed.
2. Baking the facing sheet:
(a) standing the wet veneer sheet at normal temperature for 20-40 min;
(b) heating the surface-decorated sheet after standing at 200-300 ℃ for 5-10 min by adopting microwave or infrared under normal pressure;
(c) then heating the facing sheet at 30-80 ℃ under 1-3 atmospheric pressures for 2.5-3 h by using fuel gas or electricity;
(d) heating the facing sheet at 80-150 ℃ for 30-60 min under normal pressure, cooling at normal temperature for 20-40 min, and heating by microwave or infrared heating and gas or electric heating for no more than 5min and then 10min by gas or electric heating in an alternating manner;
(e) finally, demoulding, cutting, warehousing and storing the dried facing sheet.
And observing the surface of the facing sheet to have no water stain and no crack.
The existing baking method is generally used for baking the sheet material for 2-3 hours at the temperature of 80-100 ℃ under normal pressure, and aims at the small-size facing sheet material (the length is 0.24m, the width is 0.06m, and the thickness is within 3 mm), and the large-size thicker sheet material can not be baked. The invention can completely dry the large-size facing sheet (with the length of 1-2.4 m multiplied by the width of 0.4-1.2 m) by regulating and controlling the baking mode, temperature, time and pressure, and the surface of the sheet is not cracked. The veneer sheet can also be 10mm or thicker according to special needs, and the effect is mainly realized by reinforcing the tough layer and the reinforcing layer, and the thickness can be increased by 1-4 mm each time. The facing sheet material can not crack around a cylinder with the diameter of 20cm, and the product has better flexibility.

Claims (6)

1. The baking method of the modified inorganic powder composite building facing sheet is characterized by comprising the following steps:
(a) firstly, standing a wet-state facing sheet which is formed by sequentially compounding a surface layer (1), a toughness-fixing layer (2) and a reinforcing layer (3) for 5-40 min;
(b) heating the standing facing sheet at 200-300 ℃ for 3-10 min under normal pressure;
(c) then heating the facing sheet at 30-80 ℃ under 1-3 atmospheric pressures for 0.5-3 h;
(d) heating the facing sheet at 80-150 ℃ under normal pressure for 10-60 min, and then standing and cooling for 10-40 min;
(e) finally, demoulding, cutting, warehousing and storing the dried facing sheet;
mixing and homogenizing the pretreated inorganic powder, water-soluble high-molecular polymer emulsion, water and polyether auxiliary agent, and spraying or blade coating the mixture on the surface of a mold to obtain the surface layer (1); paving the toughness-fixing layer (2) on the surface of the surface layer (1); mixing and homogenizing the pretreated inorganic powder, water-soluble high-molecular polymer emulsion, water and polyether auxiliary agent, and spraying or blade coating the mixture on the surface of the tough fixing layer (2) to obtain the reinforcing layer (3);
the step (b) adopts microwave or infrared heating, the step (c) adopts gas or electric heating, and the step (d) adopts a heating mode of alternately performing microwave or infrared heating and gas or electric heating;
the size of the facing sheet is 1-2.4 m long, 0.4-1.2 m wide and 1.5-8 mm thick.
2. The baking method of the modified inorganic powder composite architectural facing sheet according to claim 1, wherein the tough layer (2) is a glass fiber mesh, a polyvinyl chloride mesh or a polyethylene mesh.
3. The baking method of the modified inorganic powder composite architectural facing sheet according to claim 1, wherein the thickness of the surface layer (1) is 0.5 to 4 mm.
4. The baking method of the modified inorganic powder composite architectural facing sheet according to claim 1, wherein the thickness of the reinforcing layer (3) is 0.5 to 4 mm.
5. The method for baking a modified inorganic powder composite architectural facing sheet according to claim 1, wherein the inorganic powder is any one or more of cement, clay, stone powder, or sand.
6. The baking method of the modified inorganic powder composite architectural facing sheet according to claim 1, wherein the water-soluble high molecular polymer emulsion is any one or more of vinyl acetate emulsion, acrylic emulsion, polyvinyl alcohol emulsion, aqueous polyurethane emulsion and silicone-acrylic emulsion.
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CN103073254A (en) * 2013-02-05 2013-05-01 南京工业大学 Flame-retardant flexible facing tile and preparation method thereof
CN203429960U (en) * 2013-06-24 2014-02-12 烟台市顺达聚氨酯有限责任公司 Cement-based facing sheet

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CN101525936A (en) * 2009-02-14 2009-09-09 万华节能建材股份有限公司 Tile composite sheet and production method thereof
CN101947871A (en) * 2010-08-20 2011-01-19 谈霄 Method for manufacturing silicone modified double-sided double-color flexible decorative brick
CN102601849A (en) * 2012-03-13 2012-07-25 江苏南瓷绝缘子有限公司 Method for rapidly manufacturing composite insulation board
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