CN113500678A - Flame-retardant waterproof formaldehyde-free board and preparation method thereof - Google Patents
Flame-retardant waterproof formaldehyde-free board and preparation method thereof Download PDFInfo
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- CN113500678A CN113500678A CN202110894895.8A CN202110894895A CN113500678A CN 113500678 A CN113500678 A CN 113500678A CN 202110894895 A CN202110894895 A CN 202110894895A CN 113500678 A CN113500678 A CN 113500678A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 40
- 239000003063 flame retardant Substances 0.000 title claims abstract description 30
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 68
- 239000002994 raw material Substances 0.000 claims abstract description 56
- 239000000701 coagulant Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 23
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 17
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 17
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000007493 shaping process Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims description 27
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 18
- 239000012535 impurity Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 18
- 238000009966 trimming Methods 0.000 claims description 18
- 239000012745 toughening agent Substances 0.000 claims description 17
- 239000010902 straw Substances 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002023 wood Substances 0.000 claims description 12
- 239000012752 auxiliary agent Substances 0.000 claims description 11
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 9
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 9
- 230000036541 health Effects 0.000 claims description 7
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 241000196324 Embryophyta Species 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 241000209140 Triticum Species 0.000 claims description 4
- 235000021307 Triticum Nutrition 0.000 claims description 4
- 239000002671 adjuvant Substances 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a flame-retardant waterproof formaldehyde-free board and a preparation method thereof, wherein the preparation raw materials of the flame-retardant waterproof formaldehyde-free board comprise raw materials and a coagulant, and the mass ratio of the raw materials to the coagulant is 1: 1-5, wherein the coagulant comprises an agent A, an agent B and magnesium oxide, and the mass ratio of the agent A to the agent B to the magnesium oxide is 15: 2: 8-12. According to the flame-retardant waterproof formaldehyde-free board and the preparation method thereof, plant raw materials are selected to prepare the flame-retardant waterproof formaldehyde-free board, the raw materials are wide in source, low in cost and firm in bonding, the board is excellent in fireproof and waterproof performance, resistant to water bubbles and not prone to deformation, free of harmful organic volatilization such as formaldehyde and toluene and environment-friendly, curing time is greatly shortened by adding sodium polyacrylate, meanwhile, toughness, strength and the like of the board are enhanced, the board is not prone to breakage, the service life of the board is prolonged, the process is simple, cold pressing and shaping are adopted, production efficiency is higher, the production process is more environment-friendly, practicability is high, and application prospects are wide.
Description
Technical Field
The invention belongs to the technical field of wood, and particularly relates to a flame-retardant waterproof formaldehyde-free board and a preparation method thereof.
Background
In recent years, with the continuous improvement of environmental protection and fire fighting awareness of people, the requirements of family decoration material selection on green environmental protection and fire resistance are improved, but wood plates on the market at present need to be bonded by formaldehyde, are unfavorable for human health and environment, have common diseases of fire prevention, are occasionally provided with fireproof plates, have high cost of fire resistance, and hardly meet the requirements of people on fire resistance. Therefore, the design of the flame-retardant plate without glue or formaldehyde glue becomes a focus of attention of people, which is beneficial to eliminating the adhesive in the traditional sense and building a good home together.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a flame-retardant waterproof formaldehyde-free board and a preparation method thereof.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
the flame-retardant waterproof formaldehyde-free board is prepared from raw materials and a coagulant, wherein the mass ratio of the raw materials to the coagulant is 1: 1-5, wherein the coagulant comprises an agent A, an agent B and magnesium oxide, and the mass ratio of the agent A to the agent B to the magnesium oxide is 15: 2: 8-12.
Furthermore, the raw materials are selected from wood, bamboo, straws, rice straws, wheat straws or other plant roots, stems and leaves, the length of the raw materials is not more than 5mm, the width of the raw materials is not more than 1mm, and the water content is maintained to be 5-15%.
Further, the agent A comprises the following components in parts by weight: 60 parts of water, 1-10 parts of a blender and 30-39 parts of an auxiliary agent.
Further, the agent A is prepared by the following steps:
adding 60 parts of water, 1-10 parts of a blender and 30-39 parts of an auxiliary agent into a container, stirring until the mixture is completely dissolved, and filtering impurities to obtain the required agent A.
Furthermore, the blending agent is one or a combination of more of citric acid, acetic acid and glycol.
Furthermore, the adjuvant is one or the combination of two of magnesium sulfate and calcium carbonate.
Further, the agent B comprises the following components in parts by weight: 70-90 parts of water, 10-30 parts of a toughening agent and 1-10 parts of sodium polyacrylate.
Further, the agent B is prepared by the following steps:
adding 70-90 parts of water into a container, adding 10-30 parts of a toughening agent, adding 1-10 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities to obtain the required B agent.
Further, the toughening agent comprises silicon micropowder.
The invention discloses a preparation method of a flame-retardant waterproof formaldehyde-free board, which comprises the following steps:
2) preparation of raw materials
Crushing the prepared raw materials to a length not more than 5mm and a width not more than 1 mm;
2) moisture content control
Performing moisture content treatment on the raw material crushed in the step 1) to ensure that the moisture content is maintained to be 5-15%;
3) preparation of coagulants
31) Preparation of agent A
Adding 60 parts of water into a container, adding 1-10 parts of a blender and 30-39 parts of an auxiliary agent, stirring until the materials are completely dissolved, and filtering out impurities for later use;
32) preparation of agent B
Adding 70-90 parts of water into a container, adding 10-30 parts of a toughening agent, adding 1-10 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities for later use;
33) according to the following steps: 2: weighing the agent A, the agent B and magnesium oxide according to the mass ratio of 8-12, and uniformly mixing for later use;
4) conveying the raw materials obtained in the step 2) to a stirrer, and adding the coagulant obtained in the step 3), wherein the mass ratio of the raw materials to the coagulant is 1: 1-5, stirring uniformly for later use;
5) paving
Paving the material obtained in the step 4) on a base plate, uniformly paving 2-5 layers, and paving a reinforcing layer between every two layers to form a plate blank;
6) cold pressing
Placing the plate blank and the base plate in an adaptive mold, and cold-pressing in a cold press at a pressure of 3-20 MPA;
7) shaping of sheet material
After the pressure of the cold press is balanced, locking the die, keeping the pressure, unloading the die from the cold press after cold pressing for a period of time, and standing for 1-3 days at normal temperature;
8) mold removal
After standing and shaping for 1-3 days, removing the die and the backing plate;
9) balance health preserving
Preserving the slabs after the mold is removed for 3-10 days in a natural environment;
10) trimming edge
Trimming off the burrs at the edge of the raised plate blank;
11) drying by baking
Putting the plate blank obtained in the step 10) into a dryer for drying, wherein the drying temperature is 100 ℃ and 170 ℃, the drying time is 15-180min, and the drying moisture content is 8-12%;
12) sanding thickness setting
13) Trimming fixed length
And sawing the fixed length by using an edge sawing machine.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a flame-retardant waterproof formaldehyde-free board and a preparation method thereof, wherein the preparation raw materials of the flame-retardant waterproof formaldehyde-free board comprise raw materials and a coagulant, and the mass ratio of the raw materials to the coagulant is 1: 1-5, wherein the coagulant comprises an agent A, an agent B and magnesium oxide, and the mass ratio of the agent A to the agent B to the magnesium oxide is 15: 2: 8-12. The invention selects plant raw materials to prepare the flame-retardant waterproof formaldehyde-free board, has wide raw material sources and low cost, abandons the adhesive bonding mode in the prior art, adopts the inorganic flame-retardant coagulant to replace the traditional wood adhesive, has firm bonding, excellent fireproof and waterproof performances of the board, is resistant to water bubbles and difficult to deform, can completely realize no harmful organic volatile matters such as formaldehyde, toluene and the like, is more environment-friendly, ensures that the system is faintly acid by adding citric acid and/or acetic acid moderator to adjust the pH value of the system, improves the anti-freezing performance of the system by adding glycol, ensures normal use under the cold condition below zero degree, generates new chemical bonds by adding sodium polyacrylate to react with organic fibers, can increase the bonding force between each fiber, increases the integral strength of the board, and simultaneously can react with magnesium ions in the coagulant, generate insoluble metal salt, further make production curing process accelerate, the toughness and the intensity of panel are also because of further promoting, difficult fracture, the life of panel has been prolonged, can improve the holistic toughness of panel through adding silica powder, magnesium oxide and magnesium sulfate are as fire resistive material, generate the hard crystal of texture in solution, connect each wood fiber, it forms wholly to make it form, can hydrolyze at solution and provide magnesium ion, with the solidification of accelerating of sodium polyacrylate reaction, whole preparation simple process, need not the hot pressing, only need the design of colding pressing, production efficiency is higher, the production process is more environmental protection, therefore, the clothes hanger is strong in practicability, and is suitable for the industrialization and uses widely.
Detailed Description
The following detailed description of the embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to clearly and clearly define the scope of the present invention.
The flame-retardant waterproof formaldehyde-free board comprises the following preparation raw materials and a coagulant, wherein the mass ratio of the raw materials to the coagulant is 1: 1-5, wherein the coagulant comprises an agent A, an agent B and magnesium oxide, and the mass ratio of the agent A to the agent B to the magnesium oxide is 15: 2: 8-12.
The raw materials are selected from wood, bamboo, straw, rice straw, wheat straw or other plant roots, stems and leaves, the length of the raw materials is not more than 5mm, the width of the raw materials is not more than 1mm, and the water content is maintained to be 5-15%.
The agent A comprises the following components in parts by weight: 60 parts of water, 1-10 parts of a blender and 30-39 parts of an auxiliary agent. The agent A is prepared by the following steps:
adding 60 parts of water, 1-10 parts of a blender and 30-39 parts of an auxiliary agent into a container, stirring until the mixture is completely dissolved, and filtering impurities to obtain the required agent A.
The blending agent is one or more of citric acid, acetic acid and ethylene glycol.
The adjuvant is one or the combination of magnesium sulfate and calcium carbonate.
The agent B comprises the following components in parts by weight: 70-90 parts of water, 10-30 parts of a toughening agent and 1-10 parts of sodium polyacrylate. The agent B is prepared by the following steps:
adding 70-90 parts of water into a container, adding 10-30 parts of a toughening agent, adding 1-10 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities to obtain the required B agent.
The toughening agent comprises silicon micropowder.
The invention discloses a preparation method of a flame-retardant waterproof formaldehyde-free board, which comprises the following steps:
1) preparation of raw materials
Crushing the prepared raw materials to a length not more than 5mm and a width not more than 1 mm; the raw materials are selected from wood, bamboo, straw, rice straw, wheat straw or other plant roots, stems, leaves and the like;
2) moisture content control
Performing moisture content treatment on the raw material crushed in the step 1) to ensure that the moisture content is maintained to be 5-15%;
3) preparation of coagulants
31) Preparation of agent A
Adding 60 parts of water into a container, adding 1-10 parts of a blender and 30-39 parts of an auxiliary agent, stirring until the materials are completely dissolved, and filtering out impurities for later use; wherein, the blending agent is any one of citric acid, acetic acid and ethylene glycol, and the adjuvant is one or the combination of magnesium sulfate and calcium carbonate;
32) preparation of agent B
Adding 70-90 parts of water into a container, adding 10-30 parts of a toughening agent, adding 1-10 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities for later use; wherein the toughening agent comprises silicon micropowder;
33) according to the following steps: 2: weighing the agent A, the agent B and magnesium oxide according to the mass ratio of 8-12, and uniformly mixing for later use;
4) conveying the raw materials obtained in the step 2) to a stirrer, and adding the coagulant obtained in the step 3), wherein the mass ratio of the raw materials to the coagulant is 1: 1-5, stirring uniformly for later use;
5) paving
Paving the material obtained in the step 4) on a base plate, uniformly paving 2-5 layers, and paving a reinforcing layer between every two layers to form a plate blank; the reinforced layer is made of solid wood veneer, polyester fiber net, non-woven fabric, polyester fiber cloth and the like;
6) cold pressing
Placing the plate blank and the base plate in an adaptive mold, and cold-pressing in a cold press at a pressure of 3-20 MPA;
7) shaping of sheet material
After the pressure of the cold press is balanced, locking the die, keeping the pressure, unloading the die from the cold press after cold pressing for a period of time, and standing for 1-3 days at normal temperature;
8) mold removal
After standing and shaping for 1-3 days, removing the die and the backing plate;
9) balance health preserving
Preserving the slabs after the mold is removed for 3-10 days in a natural environment;
10) trimming edge
Trimming off the burrs at the edge of the raised plate blank;
11) drying by baking
Putting the plate blank obtained in the step 10) into a dryer for drying, wherein the drying temperature is 100 ℃ and 170 ℃, the drying time is 15-180min, and the drying moisture content is 8-12%;
12) sanding thickness setting
13) Trimming fixed length
And sawing the fixed length by using an edge sawing machine.
Example 1
A preparation method of a flame-retardant waterproof formaldehyde-free board comprises the following steps:
1) preparation of raw materials
Crushing the prepared wood to a length not more than 1mm and a width not more than 0.5 mm;
2) moisture content control
Drying the raw materials crushed in the step 1) by using a dryer to ensure that the water content is maintained to 8%;
3) preparation of coagulants
31) Preparation of agent A
Adding 60 parts of water into a container, adding 10 parts of citric acid blender, 20 parts of magnesium sulfate and 13 parts of calcium carbonate, stirring until the citric acid blender is completely dissolved, and filtering out impurities for later use;
32) preparation of agent B
Adding 70 parts of water into a container, adding 30 parts of silicon micropowder toughening agent, adding 10 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities for later use;
33) according to the following steps: 2: 12, weighing the agent A, the agent B and the magnesium oxide according to the mass ratio, and uniformly mixing for later use;
4) conveying the raw materials obtained in the step 2) to a stirrer, and adding the coagulant obtained in the step 3), wherein the mass ratio of the raw materials to the coagulant is 1: 2, uniformly stirring for later use;
5) paving
Uniformly paving the material obtained in the step 4) on a base plate, uniformly paving 2 layers, paving a reinforcing layer made of solid wood veneers between every two layers to form a plate blank, wherein the paving size is 2550 mm/1290 mm, the paving amount of each plate is 30kg, and the thickness of the plate blank is uniformly paved;
6) cold pressing
Placing the plate blank and the base plate in an adaptive mold, and cold-pressing in a cold press at a pressure of 14 MPA;
7) shaping of sheet material
After the pressure of the cold press is balanced, pressing for 10min, locking the die, keeping the pressure, unloading the die from the cold press after cold pressing for a period of time, and standing for 3 days at normal temperature;
8) mold removal
After standing and shaping for 3 days, removing the die and the backing plate;
9) balance health preserving
Preserving the slabs for 7 days in a natural environment after the mould is removed;
10) trimming edge
Trimming the rough edges of the cultured plate blank, and sizing to 2460mm x 1240mm by using a diamond saw blade edge sawing machine;
11) drying by baking
Putting the plate blank obtained in the step 10) into a dryer for drying at the drying temperature of 120 ℃ for 30min to obtain the dried water content of 12%;
12) sanding thickness setting
The thickness of the sander is fixed to be 6 mm;
13) trimming fixed length
The cut to length was 2440mm 1220mm 6mm using an edge saw.
Example 2
A preparation method of a flame-retardant waterproof formaldehyde-free board comprises the following steps:
1) preparation of raw materials
Crushing the prepared straw raw material to a length not more than 1mm and a width not more than 0.5 mm;
2) moisture content control
Performing moisture content treatment on the raw material crushed in the step 1) to ensure that the moisture content is maintained to 6-10%;
3) preparation of coagulants
31) Preparation of agent A
Adding 60 parts of water into a container, adding 6 parts of acetic acid blender, 30 parts of magnesium sulfate and 8 parts of calcium carbonate, stirring until the mixture is completely dissolved, and filtering out impurities for later use;
32) preparation of agent B
Adding 90 parts of water, 15 parts of silicon micropowder toughening agent and 6 parts of sodium polyacrylate into a container, stirring until the materials are completely dissolved, and filtering out impurities for later use;
33) according to the following steps: 2: 8, weighing the agent A, the agent B and the magnesium oxide according to the mass ratio, and uniformly mixing for later use;
4) conveying the raw materials obtained in the step 2) to a stirrer, and adding the coagulant obtained in the step 3), wherein the mass ratio of the raw materials to the coagulant is 1: 5, uniformly stirring for later use;
5) paving
Paving the material obtained in the step 4) on a backing plate, uniformly paving 2 layers, paving a reinforcing layer made of solid wood veneers between every two layers, and forming a plate blank;
6) cold pressing
Placing the plate blank and the base plate in an adaptive mold, and cold-pressing in a cold press at the pressure of 8 MPA;
7) shaping of sheet material
After the pressure of the cold press is balanced, pressing for 10min, locking the die, keeping the pressure, unloading the die from the cold press after cold pressing for a period of time, and standing for 3 days at normal temperature;
8) mold removal
After standing and shaping for 3 days, removing the die and the backing plate;
9) balance health preserving
Preserving the slabs for 7 days in a natural environment after the mould is removed;
10) trimming edge
Trimming the rough edges of the cultured plate blank, and sizing to 2460mm x 1240mm by using a diamond saw blade edge sawing machine;
11) drying by baking
Putting the plate blank obtained in the step 10) into a dryer for drying at the drying temperature of 120 ℃ for 150min, wherein the drying moisture content is 12%;
12) sanding thickness setting
The thickness of the sander is set to 12 mm;
13) trimming fixed length
The cut to length was 2440mm 1220mm 6mm using an edge saw.
The same as in example 1.
Example 3
A preparation method of a flame-retardant waterproof formaldehyde-free board comprises the following steps:
1) preparation of raw materials
Crushing the prepared straw raw material to a length not more than 1mm and a width not more than 0.5 mm;
2) moisture content control
Performing moisture content treatment on the raw material crushed in the step 1) to ensure that the moisture content is maintained to 10%;
3) preparation of coagulants
31) Preparation of agent A
Adding 60 parts of water into a container, adding 4 parts of acetic acid blending agent and 30 parts of magnesium sulfate auxiliary agent, stirring until the acetic acid blending agent and the magnesium sulfate auxiliary agent are completely dissolved, and filtering out impurities for later use;
32) preparation of agent B
Adding 75 parts of water into a container, adding 12 parts of silicon micropowder toughening agent, adding 8 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities for later use; wherein, the toughening agent comprises;
33) according to the following steps: 2: 10, weighing the agent A, the agent B and magnesium oxide according to the mass ratio, and uniformly mixing for later use;
4) conveying the raw materials obtained in the step 2) to a stirrer, and adding the coagulant obtained in the step 3), wherein the mass ratio of the raw materials to the coagulant is 1: 3, uniformly stirring for later use;
5) paving
Paving the material obtained in the step 4) on a backing plate, uniformly paving 2 layers, paving a reinforcing layer made of solid wood veneers between every two layers, and forming a plate blank;
6) cold pressing
Placing the plate blank and the base plate in an adaptive mold, and cold-pressing in a cold press at the pressure of 15 MPA;
7) shaping of sheet material
After the pressure of the cold press is balanced, locking the die, keeping the pressure, unloading the die from the cold press after cold pressing for a period of time, and standing for 2 days at normal temperature;
8) mold removal
After standing and shaping for 2 days, removing the die and the backing plate;
9) balance health preserving
Preserving the slabs for 10 days in a natural environment after the mould is removed;
10) trimming edge
Trimming off the burrs at the edge of the raised plate blank;
11) drying by baking
Putting the plate blank obtained in the step 10) into a dryer for drying at the drying temperature of 130 ℃ for 60min, wherein the drying water content is 12%;
12) sanding thickness setting
13) Trimming fixed length
And sawing the fixed length by using an edge sawing machine.
The same as in example 1.
The parts of the invention not specifically described can be realized by adopting the prior art, and the details are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. The flame-retardant waterproof formaldehyde-free board is characterized in that raw materials for preparing the flame-retardant waterproof formaldehyde-free board comprise raw materials and a coagulant, wherein the mass ratio of the raw materials to the coagulant is 1: 1-5, wherein the coagulant comprises an agent A, an agent B and magnesium oxide, and the mass ratio of the agent A to the agent B to the magnesium oxide is 15: 2: 8-12.
2. The fire-retardant waterproof formaldehyde-free board according to claim 1, wherein the raw material is selected from wood, bamboo, straw, rice straw, wheat straw or other plant roots, stems and leaves, the length of the raw material is not more than 5mm, the width of the raw material is not more than 1mm, and the water content is maintained to be 5-15%.
3. The flame-retardant waterproof formaldehyde-free board according to claim 1, wherein the agent A comprises the following components in parts by weight: 60 parts of water, 1-10 parts of a blender and 30-39 parts of an auxiliary agent.
4. The flame-retardant waterproof formaldehyde-free board according to claim 1 or 3, wherein the agent A is prepared by the following steps:
adding 60 parts of water, 1-10 parts of a blender and 30-39 parts of an auxiliary agent into a container, stirring until the mixture is completely dissolved, and filtering impurities to obtain the required agent A.
5. The fire-retardant waterproof formaldehyde-free board according to claim 3 or 4, wherein the blending agent is one or a combination of citric acid, acetic acid and glycol.
6. The fire-retardant waterproof formaldehyde-free board according to claim 3 or 4, wherein the adjuvant is selected from one or a combination of magnesium sulfate and calcium carbonate.
7. The flame-retardant waterproof formaldehyde-free board according to claim 1, wherein the agent B comprises the following components in parts by weight: 70-90 parts of water, 10-30 parts of a toughening agent and 1-10 parts of sodium polyacrylate.
8. The flame-retardant waterproof formaldehyde-free board according to claim 1 or 7, wherein the agent B is prepared by the following steps:
adding 70-90 parts of water into a container, adding 10-30 parts of a toughening agent, adding 1-10 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities to obtain the required B agent.
9. The fire-retardant waterproof formaldehyde-free board according to claim 7 or 8, wherein the toughening agent comprises silica micropowder.
10. The method for preparing the flame-retardant waterproof formaldehyde-free board according to any one of claims 1 to 9, characterized by comprising the following steps:
1) preparation of raw materials
Crushing the prepared raw materials to a length not more than 5mm and a width not more than 1 mm;
2) moisture content control
Performing moisture content treatment on the raw material crushed in the step 1) to ensure that the moisture content is maintained to be 5-15%;
3) preparation of coagulants
31) Preparation of agent A
Adding 60 parts of water into a container, adding 1-10 parts of a blender and 30-39 parts of an auxiliary agent, stirring until the materials are completely dissolved, and filtering out impurities for later use;
32) preparation of agent B
Adding 70-90 parts of water into a container, adding 10-30 parts of a toughening agent, adding 1-10 parts of sodium polyacrylate, stirring until the sodium polyacrylate is completely dissolved, and filtering out impurities for later use;
33) according to the following steps: 2: weighing the agent A, the agent B and magnesium oxide according to the mass ratio of 8-12, and uniformly mixing for later use;
4) conveying the raw materials obtained in the step 2) to a stirrer, and adding the coagulant obtained in the step 3), wherein the mass ratio of the raw materials to the coagulant is 1: 1-5, stirring uniformly for later use;
5) paving
Paving the material obtained in the step 4) on a base plate, uniformly paving 2-5 layers, and paving a reinforcing layer between every two layers to form a plate blank;
6) cold pressing
Placing the plate blank and the base plate in an adaptive mold, and cold-pressing in a cold press at a pressure of 3-20 MPA;
7) shaping of sheet material
After the pressure of the cold press is balanced, locking the die, keeping the pressure, unloading the die from the cold press after cold pressing for a period of time, and standing for 1-3 days at normal temperature;
8) mold removal
After standing and shaping for 1-3 days, removing the die and the backing plate;
9) balance health preserving
Preserving the slabs after the mold is removed for 3-10 days in a natural environment;
10) trimming edge
Trimming off the burrs at the edge of the raised plate blank;
11) drying by baking
Putting the plate blank obtained in the step 10) into a dryer for drying, wherein the drying temperature is 100 ℃ and 170 ℃, the drying time is 15-180min, and the drying moisture content is 8-12%;
12) sanding thickness setting
13) Trimming fixed length
And sawing the fixed length by using an edge sawing machine.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11623991B1 (en) * | 2021-09-30 | 2023-04-11 | Fei Xu | Flame-retardant waterproof formaldehyde-free board and method of manufacture |
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