CN113444375A - High-strength aldehyde-free fly ash plate and manufacturing method thereof - Google Patents
High-strength aldehyde-free fly ash plate and manufacturing method thereof Download PDFInfo
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- CN113444375A CN113444375A CN202110809308.0A CN202110809308A CN113444375A CN 113444375 A CN113444375 A CN 113444375A CN 202110809308 A CN202110809308 A CN 202110809308A CN 113444375 A CN113444375 A CN 113444375A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a high-strength formaldehyde-free fly ash plate and a preparation method thereof, and aims to solve the technical problems of low strength, high-temperature deformation, formaldehyde and flammability of the conventional fly ash plate. The high-strength formaldehyde-free fly ash plate is designed and comprises the following preparation raw materials in parts by weight: 150-300 parts of fly ash, 100-200 parts of plant straw, 50-100 parts of soybean meal, 100-200 parts of water-based resin and 3-6 parts of coupling agent. The manufacturing method for designing the high-strength aldehyde-free fly ash plate comprises the following steps: mixing fly ash, plant straws and soybean meal to obtain a mixture A; adding a coupling agent into the mixture A, shearing, uniformly stirring, adding aqueous resin, and uniformly stirring to obtain a mixture B; putting the mixture B into a die for prepressing to obtain a plate blank after the prepressing is finished; and carrying out hot press molding on the plate blank to obtain the product. The fly ash board prepared by the invention has various physical performance indexes higher than the performance requirements of the furniture-type shaving board under the same condition.
Description
Technical Field
The invention relates to the technical field of plates, in particular to a high-strength aldehyde-free fly ash plate and a manufacturing method thereof.
Background
Fly ash is a fine solid particulate in the ash of flue gases produced by the combustion of fuels. For example, the particle size of the fine ash collected from flue gas in a coal-fired power plant is generally 1-100 μm. Most of the fly ash is spherical and has a smooth surface. According to the coal consumption condition of China, about 250-300 kg of fly ash is generated by burning 1t of coal. If a large amount of fly ash is not controlled or treated, air pollution can be caused, the fly ash enters water to foul a river channel, and certain chemical substances in the fly ash cause damage to organisms and human bodies. The existing fly ash is mainly used as cement, so that the economic effect of treatment is poor.
The treatment of crop straws is also a very troublesome thing, and the degradation speed of direct returning to fields is very slow, thus causing inconvenience to farmer cultivation. The feed is more used at present, but the dosage is smaller.
The fly ash belongs to an inorganic material, and has less reaction with organic soybean glue, thereby influencing the strength of the plate.
Some current methods of treating fly ash are to blend with PVC to make thermoplastic sheets. However, the plate has the obvious disadvantage that the plate can deform under the high-temperature condition, and the use is influenced.
The existing home decoration plate has two defects: firstly, formaldehyde is contained, which causes harm to human body. Secondly, the fire-resistant material is easy to burn and is easy to cause fire.
Disclosure of Invention
The invention aims to solve the technical problems of low strength, high-temperature deformation, formaldehyde-containing and flammability of the existing fly ash plate.
In order to solve the technical problems, the invention adopts the following technical scheme:
the high-strength formaldehyde-free fly ash plate is designed and comprises the following preparation raw materials in parts by weight: 150-300 parts of fly ash, 100-200 parts of plant straw, 50-100 parts of soybean meal, 100-200 parts of water-based resin and 3-6 parts of coupling agent.
Preferably, 150-200 parts of fly ash, 100-150 parts of plant straw, 50-75 parts of soybean meal, 100-150 parts of water-based resin and 3-4 parts of coupling agent.
Preferably, the plant straw is at least one of wheat straw, corn straw, rice straw and reed straw.
Preferably, the mesh number of the soybean flour is 100-200 meshes.
Preferably, the aqueous resin is at least one of an aqueous epoxy resin and a polyamide-polyepichlorohydrin resin.
Preferably, the coupling agent is at least one of a silane coupling agent and a titanate coupling agent.
The manufacturing method for designing the high-strength aldehyde-free fly ash plate comprises the following steps:
(1) preparing materials according to the raw material proportion; mixing fly ash, plant straws and soybean meal to obtain a mixture A;
(2) adding a coupling agent into the mixture A, shearing, uniformly stirring, adding aqueous resin, and uniformly stirring to obtain a mixture B;
(3) putting the mixture B into a mold for prepressing, controlling the pressure to be 0.2-2.0 MPa, and the prepressing time to be 10-20 min, and obtaining a plate blank after the prepressing is finished;
(4) and carrying out hot press molding on the plate blank, wherein the hot press temperature is 120-250 ℃, the hot press pressure is 0.2-2.0 MPa, and the hot press time is 20-40 min.
Preferably, in the step (3), the pressure is controlled to be 0.4 to 1.8 MPa.
Preferably, in the step (4), the hot pressing temperature is 180-220 ℃, and the hot pressing pressure is 0.4-1.0 MPa.
Preferably, after the step (4), the hot-press formed board is hot-pressed with melamine impregnated paper, veneer, or technical wood.
Compared with the prior art, the invention has the beneficial technical effects that:
1. the physical performance indexes of static bending strength, elastic modulus, 2h water absorption expansion rate, surface bonding strength, internal bonding strength and nail holding force of the fly ash plate manufactured by the invention are all higher than the performance requirements of the furniture-type shaving board under the same condition.
2. The process for preparing the fly ash plate does not need a release agent, does not have the condition of adhering a steel plate, and is convenient to operate.
3. The present invention converts industrial waste and agricultural waste into aldehyde-free board for home decoration and the produced board has excellent fireproof performance.
Detailed Description
The following examples are given to illustrate specific embodiments of the present invention, but are not intended to limit the scope of the present invention in any way.
Example 1: a high-strength aldehyde-free fly ash plate is prepared from the following raw materials: 1.8kg of fly ash, 1.2kg of wheat straw, 0.6kg of soybean powder, 1.2kg of polyamide polyepichlorohydrin resin and 36g of silane coupling agent.
Example 2: a high-strength aldehyde-free fly ash plate is prepared from the following raw materials: 1.8kg of fly ash, 1.2kg of wheat straw, 0.6kg of soybean powder, 1.2kg of polyamide polyepichlorohydrin resin and 36g of titanate coupling agent.
Example 3: a high-strength aldehyde-free fly ash plate is prepared from the following raw materials: 1.8kg of fly ash, 1.2kg of wheat straw, 0.6kg of soybean powder, 1.2kg of polyamide polyepichlorohydrin resin, 18g of silane coupling agent and 18g of titanate coupling agent.
Example 4: a method for manufacturing a high-strength aldehyde-free fly ash plate comprises the following steps: 1.8kg fly ash, 1.2kg wheat straw and 0.6kg soybean meal were mixed. Then, 1.2kg of polyamide polyepichlorohydrin resin is added and stirred uniformly. Then a 50mm by 50mm square mould was used for laying. Prepressing with the weight of 12 tons, taking out the plate blank after prepressing for 10min, then putting the plate blank on a hot press for hot pressing and forming, wherein the hot pressing temperature is 180 ℃, and the hot pressing time is 20 min. The thickness of the prepared plate is 18mm, and the density of the plate is 830 kg/m.
Example 5: a method for manufacturing a high-strength aldehyde-free fly ash plate comprises the following steps: 1.8kg of fly ash, 1.2kg of wheat straw and 0.6kg of soybean flour were mixed. Adding 36g of silane coupling agent into the mixture, shearing and stirring uniformly, then adding 1.2kg of polyamide polyepichlorohydrin resin, and stirring uniformly. Then a 50mm by 50mm square mould was used for laying. Prepressing with the weight of 12 tons, taking out the plate blank after prepressing for 10min, then putting the plate blank on a hot press for hot pressing and forming, wherein the hot pressing temperature is 180 ℃ and the hot pressing time is 20 min. The thickness of the prepared plate is 18mm, and the density of the plate is 830 kg/m.
Example 6: a method for manufacturing a high-strength aldehyde-free fly ash plate comprises the following steps: 1.8kg fly ash, 1.2kg wheat straw and 0.6kg soybean meal were mixed. Adding 36g of titanate coupling agent into the mixture, shearing and stirring uniformly, then adding 1.2kg of polyamide polyepichlorohydrin resin, and stirring uniformly. Then a 50mm by 50mm square mould was used for laying. Prepressing with the weight of 12 tons, taking out the plate blank after prepressing for 10min, then putting the plate blank on a hot press for hot pressing and forming, wherein the hot pressing temperature is 180 ℃, and the hot pressing time is 20 min. The thickness of the prepared plate is 18mm, and the density of the plate is 830 kg/m.
Example 7: a method for manufacturing a high-strength aldehyde-free fly ash plate comprises the following steps: 1.8kg fly ash, 1.2kg wheat straw and 0.6kg soybean meal were mixed. Adding 18g of silane coupling agent and 18g of titanate coupling agent into the mixture, shearing and stirring uniformly, then adding 1.2kg of polyamide polyepichlorohydrin resin, and stirring uniformly. Then a 50mm by 50mm square mould was used for laying. Prepressing with the weight of 12 tons, taking out the plate blank after prepressing for 10min, then putting the plate blank on a hot press for hot pressing and forming, wherein the hot pressing temperature is 180 ℃, and the hot pressing time is 20 min. The thickness of the prepared plate is 18mm, and the density of the plate is 830 kg/m.
Comparative example: the sheets obtained in examples 4 to 7 were tested according to GB/T17657-2013 and the standard data according to GB/T4897-2015, and the mechanical data measured are shown in the following table:
TABLE 1 comparison of mechanical data required for the boards produced in examples 4-7 with furniture-type shaving boards
In example 4, no coupling agent was added, in example 5, a silane coupling agent was added, in example 6, a titanate coupling agent was added, and in example 7, both a silane coupling agent and a titanate coupling agent were added. As can be seen from Table 1, the physical properties of the fly ash panel are improved after the addition of the coupling agent. When the silane coupling agent and the titanate coupling agent are added simultaneously, the effect is obviously improved.
The fly ash plate manufactured by the method has various physical performance indexes higher than the performance requirements of the furniture-type shaving board under the same condition, and the fly ash plate manufacturing process does not need a release agent, does not have the condition of adhering a steel plate and is convenient to operate. The present invention converts industrial waste and agricultural waste into aldehyde-free board for home decoration and the produced board has excellent fireproof performance.
The present invention is described in detail with reference to the examples above; however, it will be understood by those skilled in the art that various changes in the specific parameters of the embodiments described above may be made or equivalents may be substituted for elements thereof without departing from the scope of the present invention, so as to form a plurality of specific embodiments, which are all common variations of the present invention and will not be described in detail.
Claims (10)
1. The high-strength aldehyde-free fly ash plate is characterized by comprising the following preparation raw materials in parts by weight: 150-300 parts of fly ash, 100-200 parts of plant straw, 50-100 parts of soybean meal, 100-200 parts of water-based resin and 3-6 parts of coupling agent.
2. The high-strength aldehyde-free fly ash plate as claimed in claim 1, wherein the fly ash is 150-200 parts, the plant straw is 100-150 parts, the soybean powder is 50-75 parts, the water-based resin is 100-150 parts, and the coupling agent is 3-4 parts.
3. The high-strength aldehyde-free fly ash board as claimed in claim 1, wherein the plant straw is at least one of wheat straw, corn straw, rice straw and reed straw.
4. The high strength aldehyde-free fly ash panel as claimed in claim 1, wherein the mesh size of the soybean flour is 100-200 mesh.
5. The high-strength aldehyde-free fly ash panel as claimed in claim 1, wherein the water-based resin is at least one of water-based epoxy resin and polyamide-polyepichlorohydrin resin.
6. The high-strength aldehyde-free fly ash panel as claimed in claim 1, wherein the coupling agent is at least one of a silane coupling agent and a titanate coupling agent.
7. The manufacturing method of the high-strength formaldehyde-free fly ash plate is characterized by comprising the following steps of:
preparing raw materials according to the raw material proportion of claim 1; mixing fly ash, plant straws and soybean meal to obtain a mixture A;
adding a coupling agent into the mixture A, shearing, uniformly stirring, adding aqueous resin, and uniformly stirring to obtain a mixture B;
putting the mixture B into a die for prepressing, wherein the prepressing pressure is 0.2-2.0 MPa, the prepressing time is 10-20 min, and obtaining a plate blank after the prepressing is finished;
and carrying out hot press molding on the plate blank, wherein the hot press temperature is 120-250 ℃, the hot press pressure is 0.2-2.0 MPa, and the hot press time is 20-40 min.
8. The method for manufacturing the high-strength aldehyde-free fly ash plate according to claim 7, wherein in the step (3), the pre-pressing pressure is 0.4-1.8 MPa.
9. The method for manufacturing the high-strength aldehyde-free fly ash plate according to claim 7, wherein in the step (4), the hot pressing temperature is 180-220 ℃, and the hot pressing pressure is 0.4-1.0 MPa.
10. The method for manufacturing the high-strength aldehyde-free fly ash board according to claim 7, wherein after the step (4), the board formed by hot pressing is hot pressed with melamine impregnated paper, veneer, or technical wood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110809308.0A CN113444375A (en) | 2021-07-17 | 2021-07-17 | High-strength aldehyde-free fly ash plate and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110809308.0A CN113444375A (en) | 2021-07-17 | 2021-07-17 | High-strength aldehyde-free fly ash plate and manufacturing method thereof |
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| CN202110809308.0A Pending CN113444375A (en) | 2021-07-17 | 2021-07-17 | High-strength aldehyde-free fly ash plate and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116574390A (en) * | 2023-06-14 | 2023-08-11 | 东北林业大学 | Inorganic hybridization reinforced straw-based biomass composite material and preparation method thereof |
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