CN112358238A - Composition for preparing geopolymer-wood fiber composite board, composite board and preparation method thereof - Google Patents
Composition for preparing geopolymer-wood fiber composite board, composite board and preparation method thereof Download PDFInfo
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- CN112358238A CN112358238A CN202011154681.9A CN202011154681A CN112358238A CN 112358238 A CN112358238 A CN 112358238A CN 202011154681 A CN202011154681 A CN 202011154681A CN 112358238 A CN112358238 A CN 112358238A
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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
- 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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a composition for preparing a geopolymer-wood fiber composite board and the geopolymer-wood fiber composite board. The composition comprises fiber powder, aluminosilicate mineral powder, an exciting agent and organic emulsion, wherein the aluminosilicate mineral powder accounts for 70-95 wt% and the fiber powder accounts for 5-30 wt% based on the total weight of the aluminosilicate mineral powder and the fiber powder. The board prepared by the composition has excellent performance, is environment-friendly and healthy, and does not emit formaldehyde.
Description
Technical Field
The invention belongs to the field of artificial boards, and particularly relates to a method for preparing a geopolymer-wood fiber composite board.
Background
The silicate cement shaving board is an artificial board with the advantages of both cement and wood, and is made up by using silicate cement as cementing material, using wood shavings as reinforcing material, adding water and chemical additive, mixing, stirring, pressure-forming, curing and drying. Compared with the common silicate cement products, the cement particle board has light weight, good mechanical processing performance and easy decoration. Compared with the traditional wood products, the portland cement shaving board has high strength, good performances of weather resistance, moisture resistance, water resistance, flame retardance and the like, can be used as a roof, a ceiling, a floor, a non-bearing inner wall, a non-bearing outer wall, a roof panel, a sound insulation board, a fireproof board and the like, and is widely used for indoor decoration, kitchens, ventilation ducts, underground civil engineering, various high-low-rise buildings and the like. In addition, the board adopts portland cement as a gel material, and no formaldehyde is released in the using process, so that the board is an excellent building board.
However, polysaccharides in the wood material are hydrolyzed into sugar acid substances under alkaline conditions to prevent the portland cement from being coagulated and hardened, so that the board needs to be heated and cured for 6-8 hours and cured for 10 days at room temperature, and the problems of poor raw material compatibility, long production period and the like of the portland cement particle board in production generally exist. On the other hand, the production and manufacturing of portland cement is a highly-polluted and energy-consuming industry, which also affects the production and application of portland cement particle boards to a certain extent. Therefore, it is important to find a new type of cementing material that can replace portland cement as a plate cementing agent.
Disclosure of Invention
Aiming at the problems, the invention creatively provides that the geopolymer cement which is environment-friendly, low in energy consumption, rapid in setting and hardening, high in early and later strength and good in binding property is adopted as the binder, so that the artificial board is green and environment-friendly, highly compatible in raw materials and short in production period.
In a first aspect, the present invention provides a composition for preparing a geopolymer-wood fiber composite board, comprising fiber powder, aluminosilicate mineral powder, an activator and an organic emulsion, wherein the aluminosilicate mineral powder is 70 to 95 wt% and the fiber powder is 5 to 30 wt%, based on the total weight of the aluminosilicate mineral powder and the fiber powder.
According to some embodiments of the above composition, the aluminosilicate mineral powder mineral is selected from calcined kaolin and low calcium fly ash, preferably calcined kaolin calcined at 600-750 ℃.
According to some embodiments of the above composition, the aluminosilicate-based mineral powder mineral is natural kaolin and calcined kaolin, and the silica content is 45-55 wt%, the alumina content is 35-45 wt%, and the sum of the silica and alumina contents should be greater than 85 wt%, based on the dry powder mass.
According to some embodiments of the above composition, the aluminosilicate mineral powder mineral is fly ash, and the silica content is 45 to 60 wt%, the alumina content is 20 to 35 wt%, and the calcium oxide content is less than 10 wt% based on the dry powder mass.
According to some embodiments of the above composition, the fiber powder is selected from natural fiber powder, preferably from wood fiber powder and plant fiber powder, preferably wood fiber powder.
According to some embodiments of the above composition, the fiber powder is derived from one or more of poplar, pine, jerusalem artichoke, birch, elm, mellowtree, wheat straw, and bagasse.
According to some embodiments of the above composition, the fiber powder has a length in the range of 5 to 15mm and a particle size in the range of 1 to 4 mm.
According to some embodiments of the above composition, the alkali activator is selected from an alkali metal hydroxide solution, a soluble silicate solution, used alone or in combination with a plurality of activators, and preferably an alkali metal hydroxide-soluble silicate mixed solution is used as the activator.
According to some embodiments of the above composition, the activator may be an alkali metal hydroxide solution, a soluble silicate solution, used alone or in combination with a plurality of activators, preferably an alkali metal hydroxide-soluble silicate mixed solution is used as the activator.
According to some embodiments, in the alkali metal hydroxide-soluble silicate complex solution, (calculated as the total amount of activator),
alkali metal hydroxide ratio: 5-20 wt%;
the silicate solution is as follows: 25-95 wt%;
the additional water accounts for the ratio: 20-5 wt%;
concentration of alkali metal hydroxide solution alone: 5 to 50 percent (calculated by the total amount of the excitant);
concentration of soluble silicate solution alone: 10 to 40 percent (calculated by the total amount of the excitant);
wherein the modulus of the soluble silicate (the mol ratio of silicon oxide to alkali metal oxide in the silicate) is 1.0-4.0.
According to some embodiments of the above composition, the content of the alkali-activator is 200% by weight based on the total weight of the aluminosilicate-based mineral powder.
According to some embodiments of the above composition, the acidic activator is selected from the group consisting of phosphoric acid, hydrogen phosphate and aqueous dihydrogen phosphate, preferably phosphoric acid is the activator.
According to some embodiments of the above composition, the concentration of the acidic stimulant solution is between 10 and 80 wt%.
According to some embodiments of the composition, the mass ratio of the acidic excitant solution to the aluminosilicate mineral powder is between 0.8 and 1.2.
According to some embodiments of the above composition, the organic emulsion is present in an amount of 0.5 to 10% by weight, based on the total weight of the fiber powder and the aluminosilicate mineral powder.
According to some embodiments of the above composition, when the trigger is an acidic trigger, the content of the trigger is 120-200 wt%, and when the trigger is a basic trigger, the content of the trigger is 100-200 wt%.
According to some embodiments of the above composition, the composition further comprises a water repellent. According to some embodiments of the above composition, the water repellent is present in an amount of 0.5 to 10% by weight, based on the total weight of the fiber powder and the aluminosilicate mineral powder.
According to some embodiments of the above composition, the organic emulsion is selected from the group consisting of acrylate emulsions and derivatives thereof, styrene-acrylate emulsions and derivatives thereof, butadiene-styrene copolymers and derivatives thereof, ethylene-vinyl acetate copolymers and derivatives thereof, preferably styrene-acrylate emulsions and derivatives thereof.
According to some embodiments of the above composition, the organic emulsion is incorporated in an amount of 0.5 to 10% by weight, based on the total weight of the fiber powder and the aluminosilicate mineral powder.
According to some embodiments of the above composition, the water repellent is selected from the group consisting of an organosilane water repellent and a long-chain fatty acid salt water repellent, preferably incorporated in an amount of 0.5 to 10% by weight, based on the total weight of the fiber powder and the aluminosilicate mineral powder.
In a second aspect, the invention provides the use of the above composition for the manufacture of artificial boards. Preferably, the artificial board is a geopolymer-wood fiber composite board.
In a third aspect of the invention, there is provided a geopolymer-lignocellulosic composite panel comprising a composite made from a composition according to the first aspect of the invention and a fibrous web. The fiber mesh can be polypropylene fiber mesh, polyethylene fiber mesh, polyvinyl alcohol fiber mesh, glass fiber mesh, etc., and the diameter of the pores of the fiber mesh is selected from 2-5mm, preferably glass fiber mesh. According to the invention, the geopolymer-wood fiber composite board takes geopolymer cement formed by aluminosilicate mineral powder and an exciting agent as a binder. The geopolymer-wood fiber composite board has the advantages of excellent performance, environmental protection, health and no formaldehyde emission.
According to some embodiments of the geopolymer-wood fiber composite board, the aluminosilicate mineral powder mineral is calcined kaolin and low-calcium fly ash, preferably calcined kaolin calcined at 600-750 ℃.
According to some embodiments of the geopolymer-wood fiber composite board, the aluminosilicate mineral powder minerals are natural kaolin and calcined kaolin, and the silica content is 45-55 wt%, the alumina content is 35-45 wt%, and the total content of silica and alumina is greater than 85 wt% based on the dry powder mass.
According to some embodiments of the geopolymer-wood fibre composite panel described above, the aluminosilicate mineral powder mineral is fly ash, having a silica content of 45-60 wt%, an alumina content of 20-35 wt%, and a calcium oxide content of less than 10 wt%, based on the dry powder mass.
According to some embodiments of the geopolymer-wood fibre composite panel described above, the fibre powder is selected from natural fibre powder, preferably from wood fibre powder and plant fibre powder, preferably wood fibre powder.
According to some embodiments of the geopolymer-lignocellulosic composite panel described above, the fiber powder is derived from one or more of poplar, pine, aspen, birch, elm, sumatrix, wheat straw, and bagasse.
According to some embodiments of the geopolymer-wood fibre composite panel described above, the fibre powder has a length in the range of 5-15mm and a particle size in the range of 1-4 mm.
According to some embodiments of the geopolymer-lignocellulosic composite panel described above, the alkaline activator is selected from the group consisting of an alkali metal hydroxide solution, a soluble silicate solution, and an alkali metal hydroxide-soluble silicate mixed solution, preferably an alkali metal hydroxide-soluble silicate mixed solution is the activator. According to some embodiments, in the alkali metal hydroxide-soluble silicate complex solution, (calculated as the total amount of activator),
alkali metal hydroxide ratio: 5-20 wt%;
the silicate solution is as follows: 25-95 wt%;
the additional water accounts for the ratio: 20-5 wt%;
concentration of alkali metal hydroxide solution alone: 5 to 50 percent (calculated by the total amount of the excitant);
concentration of soluble silicate solution alone: 10 to 40 percent (calculated by the total amount of the excitant);
wherein the modulus of the soluble silicate (the mol ratio of silicon oxide to alkali metal oxide in the silicate) is 1.0-4.0.
According to some embodiments of the geopolymer-wood fiber composite board, the alkali-activator is present in an amount of 100-200 wt%, based on the total weight of the aluminosilicate mineral powder.
According to some embodiments of the geopolymer-wood fibre composite panel described above, the acidic excitant is selected from phosphoric acid, hydrogen phosphate and dihydrogen phosphate aqueous solutions, preferably phosphoric acid is the excitant.
According to some embodiments of the geopolymer-wood fiber composite board described above, the concentration of the acidic activator solution is between 10 and 80 wt%.
According to some embodiments of the geopolymer-wood fiber composite board, the mass ratio of the acidic activator solution to the aluminosilicate mineral powder is between 0.8 and 1.2.
According to some embodiments of the geopolymer-wood fiber composite board, the content of the aluminosilicate mineral powder is 15-60 wt%, the content of the fiber powder is 40-85 wt%, the content of the activator is 100-200 wt%, and the content of the organic emulsion is 0.5-10 wt%, based on the total weight of the fiber powder and the aluminosilicate mineral powder.
According to some embodiments of the geopolymer-wood fiber composite board, when the activator is an acidic activator, the content of the activator is 200% by weight, and when the activator is an alkaline activator, the content of the activator is 200% by weight.
In a fourth aspect, the present invention provides a method for preparing a geopolymer-wood fiber composite board, comprising the step of performing compression molding on a fiber mesh by using the composition of the first aspect, preferably comprising the following steps:
(1) mixing the fiber powder and aluminosilicate mineral powder to obtain a first mixture,
(2) mixing the first mixture with an activator, an organic emulsion and an optional waterproofing agent to obtain a second mixture;
(3) and (3) placing the second mixture and the fiber mesh into a mold for compression molding, and preferably, pressurizing and steaming the reinforced mold after compression molding.
According to some embodiments of the above method, the press forming comprises: and after the second mixture and the fiber mesh are paved, covering the die, and stopping pressurizing when the pressure is loaded to 1-5MPa at the speed of 0.05-0.5MPa/s, and keeping for 2-10 min.
According to some embodiments of the above method, the pressure steam curing comprises steam curing the reinforced mold in an environment of 40-80 ℃ for 1-10 hours, and demolding after cooling.
According to some embodiments of the above method, the fiber mesh may be polypropylene fiber mesh, polyethylene fiber mesh, polyvinyl alcohol fiber mesh, glass fiber mesh, etc., and the diameter of the pores of the fiber mesh is selected from 2 to 5mm, preferably glass fiber mesh.
Detailed Description
The present invention will be described in detail with reference to examples, but the present invention is not limited to the examples.
[ example 1 ]
Accurately weighing the substances, wherein the weight of the pine wood fiber chips is 30 wt%, the weight of the calcined kaolin powder is 70 wt%, the doping amount of the styrene-acrylate emulsion is 0.5 wt%, the doping amount of the silane waterproof agent is 0.5 wt%, and the doping amount of the alkali metal hydroxide-soluble silicate mixed solution excitant solution is 100 wt% based on the total weight of the calcined kaolin powder.
Wherein, based on the total weight of the exciting agent, the content of sodium hydroxide solid particles is 9.3 weight percent, the content of the industrial sodium silicate solution with the concentration of 38 percent (the ratio of silicon oxide to aluminum oxide is 3.4) is 82.5 weight percent, and the content of the added water is 8.2 weight percent.
(A) Pre-mixing treatment of wood fiber scraps and aluminosilicate mineral powder:
accurately weighing the components according to the weight ratio of the components, and placing the pine wood fiber chips and the calcined kaolin powder in a mechanical mixer for sufficient 0.5h at room temperature to ensure that the powder is uniformly distributed.
(B) Mixing:
accurately weighing an excitant solution, a styrene-acrylate emulsion and a silane waterproof agent, placing the components in a container, uniformly mixing, then placing the premixed powder obtained in the step (A) in a planetary mixer, adding the mixed solution, and fully stirring for 5min until the components are uniformly mixed.
(C) Die filling:
before filling, spraying a release agent in a mold of a cold press, wherein the release agent is preferably methyl silicone oil. And (D) uniformly paving the uniformly mixed semi-dry material obtained in the step (B) to a position half the depth of the cold press mold, and filling the mold with the residual material after paving a fiber mesh.
(D) And (3) pressing and forming:
after the material and the fiber grids are paved, the die is covered, the pressurization is stopped when the material and the fiber grids are loaded to 1MPa at the speed of 0.05MPa/s, and the die and the top cover are reinforced by screws to keep the pressure after the material and the fiber grids are kept for 5 min.
(E) Pressure steam curing:
and (D) placing the reinforced mould obtained in the step (D) in an environment of 80 ℃ for steaming for 3h, cooling, demoulding, and cutting according to requirements to obtain the required geopolymer cementing density board.
[ example 2 ]
Accurately weighing the substances, wherein the weight of the pine wood fiber chips is 70 wt%, the weight of the calcined kaolin powder is 30 wt%, the doping amount of the styrene-acrylate emulsion is 0.5 wt%, the doping amount of the silane waterproof agent is 0.5 wt%, and the doping amount of the phosphoric acid excitant solution is 80 wt% based on the total weight of the calcined kaolin powder.
Wherein the content of phosphoric acid is 70 wt% based on the total weight of the phosphoric acid activator solution.
(A) Pre-mixing treatment of wood fiber scraps and aluminosilicate mineral powder:
accurately weighing the components according to the weight ratio of the components, and placing the pine wood fiber chips and the calcined kaolin powder in a mechanical mixer for sufficient 0.5h at room temperature to ensure that the powder is uniformly distributed.
(B) Mixing:
accurately weighing a phosphoric acid excitant solution, a styrene-acrylate emulsion and a silane waterproof agent, placing the components in a container, uniformly mixing, then placing the premixed powder obtained in the step (A) in a planetary mixer, adding the mixed solution, and fully stirring for 5min until the components are uniformly mixed.
(C) Die filling:
before filling, spraying a release agent in a mold of a cold press, wherein the release agent is preferably methyl silicone oil. And (D) uniformly paving the uniformly mixed semi-dry material obtained in the step (B) to a position half the depth of the cold press mold, and filling the mold with the residual material after paving a fiber mesh.
(D) And (3) pressing and forming:
after the material and the fiber grids are paved, the die is covered, the pressurization is stopped when the material and the fiber grids are loaded to 1MPa at the speed of 0.05MPa/s, and the die and the top cover are reinforced by screws to keep the pressure after the material and the fiber grids are kept for 5 min.
(E) Pressure steam curing:
and (D) placing the reinforced mould obtained in the step (D) in an environment with the temperature of 80 ℃ for steam curing for 6h, cooling, demoulding and cutting according to requirements to obtain the required geopolymer cementing density board.
[ examples 3 to 5 ]
The process of example 1 was followed except that the parameters of the lignocellulosic pieces and aluminosilicate mineral powders were as shown in Table 1.
[ examples 6 to 8 ]
The process of example 2 was followed except that the parameters of the lignocellulosic pieces and aluminosilicate mineral powders were as shown in Table 1.
[ examples 9 to 11 ]
The procedure is as in example 1, except that the parameters of the organic emulsion and the water repellent are as shown in Table 1.
[ examples 12 to 14 ]
The procedure is as in example 2, except that the parameters of the organic emulsion and the water repellent are as shown in Table 1.
[ examples 15 to 16 ]
The process of example 1 was followed except that the parameters of the alkali metal hydroxide-soluble silicate mixed solution activator solution are shown in Table 1.
[ examples 17 to 18 ]
The procedure of example 2 was followed except that the parameters of the phosphoric acid trigger solution are shown in Table 1.
Comparative example 1
The procedure is as in example 1, except that no organic emulsion is added and the water repellent parameters are as shown in Table 1.
Comparative example 2
The procedure is as in example 2, except that no organic emulsion is added and the water repellent parameters are as shown in Table 1.
[ examples 19 to 21 ]
The process of example 1 was followed except that the lignocellulosic crumb type parameters were varied as shown in Table 1.
[ examples 22 to 24 ]
The process of example 2 was followed except that the lignocellulosic crumb type parameters were varied as shown in Table 1.
[ test examples ]
The plant fiber sheets prepared in examples 1-13 and comparative examples 1-5 were tested for static bending strength, water absorption expansion rate, dimensional stability, water content, formaldehyde emission, internal bond strength, and cigarette ignition grade (surface cigarette ignition resistance) according to the international GB/T17657-2013 physicochemical property test method for artificial boards and veneers, respectively, and the results are shown in Table 2.
Although the invention has been described above with reference to some embodiments, various changes may be made without departing from the scope of the invention. The present invention is not limited to the specific embodiments disclosed herein, but all technical solutions falling within the scope of the claims.
Claims (10)
1. The composition for preparing the geopolymer-wood fiber composite artificial board comprises fiber powder, aluminosilicate mineral powder, an exciting agent and organic emulsion, wherein the aluminosilicate mineral powder accounts for 70-95 wt% and the fiber powder accounts for 5-30 wt% of the total weight of the aluminosilicate mineral powder and the fiber powder.
2. The composition as claimed in claim 1, wherein the fiber powder is selected from natural fiber powder, preferably from wood fiber powder and plant fiber powder, preferably wood fiber powder; preferably, the fiber powder is derived from one or more of poplar, pine, fall wood, birch, elm, water willow, wheat straw, straw and bagasse; and/or
The length of the fiber powder is within the range of 5-15mm, and the particle size is within the range of 1-4 mm.
3. The composition as claimed in claim 1 or 2, wherein the activator is selected from the group consisting of an alkali activator and an acidic activator, and the content of the activator is 200% by weight based on the total weight of the fiber powder and the aluminosilicate mineral powder, and when the activator is an acidic activator, the content of the activator is 200% by weight based on the total weight of the fiber powder and the aluminosilicate mineral powder, and when the activator is an alkali activator, the content of the activator is 200% by weight based on the total weight of the fiber powder;
the content of the organic emulsion is 0.5-10 wt%.
4. The composition according to any one of claims 1 to 3,
alkali metal hydroxide solution and soluble silicate solution, which are used singly or in combination with a plurality of activators, preferably alkali metal hydroxide-soluble silicate mixed solution is used as the activator,
the acidic activator is selected from phosphoric acid, hydrogen phosphate and dihydrogen phosphate aqueous solution, preferably phosphoric acid as activator, and/or
The mass ratio of the acidic excitant solution to the aluminosilicate mineral powder is 0.8-1.2.
5. Composition according to any one of claims 1 to 4, further comprising a water repellent agent, preferably in an amount of 0.5 to 10% by weight, based on the total weight of the fiber powder and the aluminosilicate mineral powder.
6. Composition according to any one of claims 1 to 5, characterized in that the organic emulsion is chosen from acrylic ester emulsions and derivatives thereof, styrene-acrylic ester emulsions and derivatives thereof, butadiene-styrene copolymers and derivatives thereof, ethylene-vinyl acetate copolymers and derivatives thereof, preferably styrene-acrylic ester emulsions and derivatives thereof; and/or
The waterproof agent is selected from organosilane waterproof agents and long-chain fatty acid salt waterproof agents.
7. Use of the composition according to any of claims 1-6 for the preparation of artificial boards, preferably the artificial boards are geopolymer-wood fibre composite artificial boards.
8. A geopolymer-wood fibre composite manufactured panel made from a composition according to any one of claims 1-6 and a fibre network, preferably selected from the group consisting of polypropylene fibre network, polyethylene fibre network, polyvinyl alcohol fibre network and glass fibre network, the pore diameter of the fibre network preferably being 2-5 mm.
9. A method of making a geopolymer-wood fibre composite artificial board according to claim 8, comprising compression moulding with a fibre mesh with a composition according to any of claims 1-6, preferably comprising the steps of:
(1) mixing the fiber powder and aluminosilicate mineral powder to obtain a first mixture,
(2) mixing the first mixture with an activator, an organic emulsion and an optional waterproofing agent to obtain a second mixture;
(3) and (3) placing the second mixture and the fiber mesh into a mold for compression molding, and preferably, pressurizing and steaming the reinforced mold after compression molding.
10. The method of claim 9, wherein the press forming comprises capping the mold after the second mixture and the fiber mesh are laid, and stopping pressurizing when the second mixture is loaded to 1-5MPa at a rate of 0.05-0.5MPa/s, and maintaining for 2-10 min;
the pressure steam curing comprises the steps of reinforcing the mould, performing steam curing for 1-10 hours at the temperature of 40-80 ℃, cooling and demolding.
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| CN114920507A (en) * | 2022-06-20 | 2022-08-19 | 中南林业科技大学 | Tough formaldehyde-removing geopolymer-based ecological plate and preparation method thereof |
| CN116040993A (en) * | 2022-12-24 | 2023-05-02 | 绍兴文理学院 | Preparation method of modified phosphate-based polymer |
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| CN101544485A (en) * | 2009-04-20 | 2009-09-30 | 西安建筑科技大学 | Method for preparing geopolymer and organic macromolecule composite gelled material |
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| CN114920507A (en) * | 2022-06-20 | 2022-08-19 | 中南林业科技大学 | Tough formaldehyde-removing geopolymer-based ecological plate and preparation method thereof |
| CN116040993A (en) * | 2022-12-24 | 2023-05-02 | 绍兴文理学院 | Preparation method of modified phosphate-based polymer |
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Application publication date: 20210212 |