CN113977711A - Antibacterial flame-retardant plywood and preparation method thereof - Google Patents

Antibacterial flame-retardant plywood and preparation method thereof Download PDF

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Publication number
CN113977711A
CN113977711A CN202111297028.2A CN202111297028A CN113977711A CN 113977711 A CN113977711 A CN 113977711A CN 202111297028 A CN202111297028 A CN 202111297028A CN 113977711 A CN113977711 A CN 113977711A
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layer
parts
flame
retardant
plywood
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CN202111297028.2A
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Chinese (zh)
Inventor
李鹏
李玉萍
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Shenzhen Shenwei Technology Co ltd
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Shenzhen Shenwei Technology Co ltd
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Priority to CN202111297028.2A priority Critical patent/CN113977711A/en
Publication of CN113977711A publication Critical patent/CN113977711A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • 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
    • 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
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
    • C09J129/02—Homopolymers or copolymers of unsaturated alcohols
    • C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/08—Coating on the layer surface on wood layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0806—Silver
    • 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
    • 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
    • C08K2003/2224—Magnesium hydroxide
    • 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
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plant Pathology (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

The invention discloses an antibacterial flame-retardant plywood and a preparation method thereof, belonging to the technical field of plywood, and comprising a paint layer, a surface layer, a flame-retardant layer and a shaving board layer; the wood shaving board layer is used as a base layer, and the upper surface and the lower surface are sequentially laminated with a flame-retardant layer, a surface layer and a paint layer; the surface layer is a wood board; the flame-retardant layer and the flame-retardant layer are flame-retardant pc boards; the surface layer, the flame-retardant layer and the wood shaving board layer are adhered by an adhesive. The invention also discloses a preparation method of the surface layer, the flame-retardant layer and the shaving board layer, which is glued by the adhesive, cold-pressed, hot-pressed and lacquered. The plywood provided by the invention has multiple flame-retardant effects, the surface and inner ply layers of the plywood have antibacterial effects, the adhesive strength and the water resistance are high, the storage stability is good, the harm of formaldehyde is avoided, the manufacturing process and equipment are simple, and the plywood is industrially popularized and manufactured.

Description

Antibacterial flame-retardant plywood and preparation method thereof
Technical Field
The invention relates to the technical field of plywood, in particular to antibacterial flame-retardant plywood and a preparation method thereof.
Background
Plywood is a three-layer or multi-layer plate material made up by using wood segments and making them be rotary-cut into single board or sliced into thin wood and using adhesive to make them be glued together, and usually using odd number of layers of single board and making the fibre directions of adjacent layers of single board be mutually perpendicular. The materials for the plywood usually comprise basswood, ash wood, birch, elm, eucalyptus, pine, poplar and the like, and are common materials for indoor wall and floor decoration.
Various volatile organic compounds and harmful microorganisms exist in the living environment of people, and directly affect the physical and psychological health of people. Most pathogenic bacteria in the living environment often come from the aspects of dirt on the ground and furniture, pets and the like, and the floor and the furniture are directly contacted with the human body, so that microorganisms breeding germs and bacteria are more easily transferred to the human body. In the past, people use mildew-proof antibacterial agents of chemical drugs to be sprayed around rooms so as to solve the air quality problem of the rooms, but the mildew-proof antibacterial agents in the prior art have high toxicity and poor heat resistance and durability, and are easy to discolor when being sprayed on the surfaces of floors and decorative plates so as to affect the attractiveness. With the increasing requirements of people on home environment, the requirements on functional healthy and environment-friendly floors are increased. Firstly, the floor has high environmental protection level requirements and reaches the formaldehyde-free level. Secondly, the floor is required to have air purification and antibacterial functions.
Therefore, how to provide an antibacterial flame-retardant plywood is a problem which needs to be solved by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides an antibacterial flame-retardant plywood and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
an antibacterial flame-retardant plywood comprises a paint layer, a surface layer, a flame-retardant layer and a shaving board layer;
the wood shaving board layer is used as a base layer, and the upper surface and the lower surface are sequentially laminated with a flame-retardant layer, a surface layer and a paint layer;
the surface layer is a wood board; the flame-retardant layer is a flame-retardant pc board;
the surface flame-retardant layer and the wood shaving board layer are adhered by using an adhesive.
Preferably, the paint layer comprises the following raw materials in parts by weight:
50-80 parts of polyether polyol, 30-50 parts of brominated epoxy resin, 5-15 parts of hydroxypropyl methyl cellulose, 1-2 parts of aluminum hydroxide, 1-2 parts of magnesium hydroxide, 5-7 parts of nano silicon dioxide and 0.5-1 part of nano silver.
Preferably, the adhesive comprises the following raw materials in parts by weight:
60-80 parts of polyvinyl alcohol, 1.2-1.5 parts of nano magnesium oxide, 5-10 parts of acid modified rosin resin, 3-5 parts of emulsifier, 5-7 parts of defatted soybean protein powder, 5-7 parts of starch, 1-3 parts of nano silver, 1-3 parts of alkali, 150 parts of water 100-doped materials, 10-12 parts of kaolin and 6-8 parts of calcium carbonate.
Has the advantages that: the flame-retardant materials such as aluminum hydroxide and magnesium hydroxide are added into the paint layer of the plywood, so that the paint layer has certain flame retardance, and the flame-retardant pc board is arranged between the surface layer and the wood shaving board layer, so that the flame retardance of the plywood is further enhanced, and the plywood has multiple flame-retardant effects. Meanwhile, nano silver is added into the paint layer and the adhesive raw materials, has good antibacterial performance, can effectively inhibit the bacterial proliferation on the surface and inside the plywood, prolongs the service life of the plywood, and also ensures the quality of the household environment.
A preparation method of the antibacterial flame-retardant plywood comprises the following steps:
(1) uniformly mixing starch and defatted soy protein powder, continuously uniformly mixing the starch and the defatted soy protein powder with water according to the mass ratio of 1: 1, heating to 95 ℃, and stirring at the rotating speed of 200r/min for 28min to obtain gelatinized starch; heating water to 50-60 ℃, then sequentially adding the polyvinyl alcohol, the nano-magnesium oxide, the acid modified rosin resin, the alkali, the kaolin, the calcium carbonate, the nano-silver and the emulsifier into the residual water while stirring, heating the system to 90-95 ℃, and continuously stirring for reaction for 40-60min to obtain an adhesive for later use;
(2) uniformly stirring the polyether polyol and the brominated epoxy resin, sequentially adding hydroxypropyl methyl cellulose, aluminum hydroxide, magnesium hydroxide, nano silicon dioxide and nano silver, and continuously stirring until the system is uniformly dispersed to obtain a paint layer for later use;
(3) drying the wood board, soaking the wood board in 8-10mg/L sodium selenite solution, and freeze-drying to obtain a surface layer for later use;
(4) uniformly stirring wood shavings and the adhesive in a mass ratio of 1: 2, and placing the mixture in a mould for drying and forming to obtain a wood shavings board layer;
(5) coating the adhesive on the surface layers of the surface layer, the flame-retardant layer and the shaving board layer, and then sequentially laminating the flame-retardant layer and the surface layer on the upper surface and the lower surface by taking the shaving board layer as a base layer to obtain a glue-coated plate blank;
(6) painting: and (3) carrying out cold pressing and hot pressing on the glued board blank until the adhesive is cured, drying at 60-70 ℃ until the water content is 7-9%, then coating paint on the outer surface of the surface layer, cutting after drying, and sanding to obtain the antibacterial flame-retardant plywood.
Preferably, the drying temperature in the step (3) is 60-70 ℃, and the drying is carried out until the water content is 1-3%;
the soaking temperature is 40-45 ℃, and the soaking time is 3-5 hours;
the freeze drying is to freeze dry the wood board until the water content is 16-18%.
Preferably, the drying temperature in the step (4) is 115-130 ℃, and the drying time is 40-55 min.
Preferably, the coating amount of the adhesive in the step (5) is 180-2。
Preferably, the cold pressing pressure in the step (6) is 0.8-1.2MPa, and the cold pressing time is 20-60 min;
preferably, the hot pressing in step (6) comprises the steps of:
preheating the cold-pressed gluing plate blank at 80-90 ℃ for 25-30 minutes, and then carrying out hot pressing at 148-150 ℃ until the adhesive is cured, wherein the hot pressing pressure is 4-6 MPa.
Preferably, the drying temperature in the step (6) is 150-160 ℃, and the drying time is 20-30 min.
According to the technical scheme, compared with the prior art, the invention discloses the antibacterial flame-retardant plywood and the preparation method thereof.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a plywood structure according to the present invention, wherein the reference numerals are as follows: 1-paint layer, 2-surface layer, 3-flame retardant layer and 4-wood shaving board layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An antibacterial flame-retardant plywood is shown in figure 1 and comprises a paint layer 1, a surface layer 2, a flame-retardant layer 3 and a shaving board layer 4;
wherein, the wood shaving board layer 4 is taken as a base layer, and the upper surface and the lower surface are sequentially laminated with the flame-retardant layer 3, the surface layer 2 and the paint layer 1;
the surface layer 2 is a wood board; the flame-retardant layer 3 is a flame-retardant pc board;
the surface layer 2, the flame-retardant layer 3 and the wood shaving board layer 4 are adhered by an adhesive.
A preparation method of the antibacterial flame-retardant plywood comprises the following steps:
(1) weighing the following raw materials in proportion: 70 parts of polyvinyl alcohol, 1.3 parts of nano magnesium oxide, 7 parts of acid modified rosin resin, 4 parts of emulsifier, 6 parts of defatted soybean protein powder, 6 parts of starch, 2 parts of nano silver, 2 parts of alkali, 125 parts of water, 11 parts of kaolin and 7 parts of calcium carbonate.
Uniformly mixing starch and defatted soy protein powder, continuously uniformly mixing the starch and the defatted soy protein powder with water according to the mass ratio of 1: 1, heating to 95 ℃, and stirring at the rotating speed of 200r/min for 28min to obtain gelatinized starch; heating water to 50-60 ℃, then sequentially adding polyvinyl alcohol, nano-magnesium oxide, acid modified rosin resin, alkali, kaolin, calcium carbonate, nano-silver and an emulsifier into the rest water while stirring, heating the system to 90-95 ℃, and continuously stirring for reaction for 50min to obtain an adhesive for later use;
(2) weighing the following raw materials in proportion: 70 parts of polyether polyol, 40 parts of brominated epoxy resin, 10 parts of hydroxypropyl methyl cellulose, 1.5 parts of aluminum hydroxide, 1.5 parts of magnesium hydroxide, 6 parts of nano silicon dioxide and 0.8 part of nano silver;
uniformly stirring polyether polyol and brominated epoxy resin, sequentially adding hydroxypropyl methyl cellulose, aluminum hydroxide, magnesium hydroxide, nano silicon dioxide and nano silver, and continuously stirring until the system is uniformly dispersed to obtain a paint layer for later use;
(3) drying the wood board at 60-70 ℃ until the water content is 1-3%, and soaking in 9mg/L sodium selenite solution at 40-45 ℃ for 4 hours; then freeze-drying the soaked wood board until the water content of the wood board is 16-18% to obtain a surface layer for later use;
(4) uniformly stirring the wood shavings and the adhesive in a mass ratio of 1: 2, and placing the mixture in a mould to be dried at the temperature of 115 ℃ and 130 ℃ for 40-55min for forming to obtain a wood shavings board layer;
(5) coating adhesive on the surface of the surface layer, the flame-retardant layer and the shaving board layer, wherein the adhesive coating amount is 180-2Then, taking the shaving board layer as a base layer, and sequentially laminating a flame-retardant layer and a surface layer on the upper surface and the lower surface to obtain a gluing board blank;
(6) painting: and (3) cold-pressing the gluing plate blank for 40min under the condition that the pressure is 1.0MPa, preheating the cold-pressed gluing plate blank for 25-30 min at the temperature of 80-90 ℃, and then carrying out hot pressing at the temperature of 148-150 ℃ until the adhesive is cured, wherein the hot pressing pressure is 4-6 MPa. And then drying the hot-pressed plate blank at 60-70 ℃ until the water content is 7-9%, coating paint on the outer surface of the surface layer, drying at the temperature of 150-160 ℃ for 20-30min to dry the paint, cutting the plywood, and sanding to obtain the antibacterial flame-retardant plywood.
Example 2
An antibacterial flame-retardant plywood is shown in figure 1 and comprises a paint layer 1, a surface layer 2, a flame-retardant layer 3 and a shaving board layer 4;
wherein, the wood shaving board layer 4 is taken as a base layer, and the upper surface and the lower surface are sequentially laminated with the flame-retardant layer 3, the surface layer 2 and the paint layer 1;
the surface layer 2 is a wood board; the flame-retardant layer 3 is a flame-retardant pc board;
the surface layer 2, the flame-retardant layer 3 and the wood shaving board layer 4 are adhered by an adhesive.
A preparation method of the antibacterial flame-retardant plywood comprises the following steps:
(1) weighing the following raw materials in proportion: 60 parts of polyvinyl alcohol, 1.2 parts of nano magnesium oxide, 5 parts of acid modified rosin resin, 3 parts of emulsifier, 5 parts of defatted soybean protein powder, 5 parts of starch, 1 part of nano silver, 1 part of alkali, 100 parts of water, 10 parts of kaolin and 6 parts of calcium carbonate.
Uniformly mixing starch and defatted soy protein powder, continuously uniformly mixing the starch and the defatted soy protein powder with water according to the mass ratio of 1: 1, heating to 95 ℃, and stirring at the rotating speed of 200r/min for 28min to obtain gelatinized starch; heating water to 50-60 ℃, then sequentially adding polyvinyl alcohol, nano-magnesium oxide, acid modified rosin resin, alkali, kaolin, calcium carbonate, nano-silver and an emulsifier into the residual water while stirring, heating the system to 90-95 ℃, and continuously stirring for reacting for 40min to obtain an adhesive for later use;
(2) weighing the following raw materials in proportion: 50 parts of polyether polyol, 30 parts of brominated epoxy resin, 5 parts of hydroxypropyl methyl cellulose, 1 part of aluminum hydroxide, 1 part of magnesium hydroxide, 5-7 parts of nano silicon dioxide and 0.5 part of nano silver;
uniformly stirring polyether polyol and brominated epoxy resin, sequentially adding hydroxypropyl methyl cellulose, aluminum hydroxide, magnesium hydroxide, nano silicon dioxide and nano silver, and continuously stirring until the system is uniformly dispersed to obtain a paint layer for later use;
(3) drying the wood board at 60-70 ℃ until the water content is 1-3%, and soaking in 8mg/L sodium selenite solution at 40-45 ℃ for 5 hours; then freeze-drying the soaked wood board until the water content of the wood board is 16-18% to obtain a surface layer for later use;
(4) uniformly stirring the wood shavings and the adhesive in a mass ratio of 1: 2, and placing the mixture in a mould to be dried at the temperature of 115 ℃ and 130 ℃ for 40-55min for forming to obtain a wood shavings board layer;
(5) coating adhesive on the surface of the surface layer, the flame-retardant layer and the shaving board layer, wherein the adhesive coating amount is 180-2Then, taking the shaving board layer as a base layer, and sequentially laminating a flame-retardant layer and a surface layer on the upper surface and the lower surface to obtain a gluing board blank;
(6) painting: and (3) cold-pressing the gluing plate blank for 60min under the condition that the pressure is 0.8MPa, preheating the cold-pressed gluing plate blank for 25-30 min at the temperature of 80-90 ℃, and then carrying out hot pressing at the temperature of 148-150 ℃ until the adhesive is cured, wherein the hot pressing pressure is 4-6 MPa. And then drying the hot-pressed plate blank at 60-70 ℃ until the water content is 7-9%, coating paint on the outer surface of the surface layer, drying at the temperature of 150-160 ℃ for 20-30min to dry the paint, cutting the plywood, and sanding to obtain the antibacterial flame-retardant plywood.
Example 3
An antibacterial flame-retardant plywood is shown in figure 1 and comprises a paint layer 1, a surface layer 2, a flame-retardant layer 3 and a shaving board layer 4;
wherein, the wood shaving board layer 4 is taken as a base layer, and the upper surface and the lower surface are sequentially laminated with the flame-retardant layer 3, the surface layer 2 and the paint layer 1;
the surface layer 2 is a wood board; the flame-retardant layer 3 is a flame-retardant pc board;
the surface layer 2, the flame-retardant layer 3 and the wood shaving board layer 4 are adhered by an adhesive.
A preparation method of the antibacterial flame-retardant plywood comprises the following steps:
(1) weighing the following raw materials in proportion: 80 parts of polyvinyl alcohol, 1.5 parts of nano magnesium oxide, 10 parts of acid modified rosin resin, 5 parts of emulsifier, 7 parts of defatted soybean protein powder, 7 parts of starch, 3 parts of nano silver, 3 parts of alkali, 150 parts of water, 12 parts of kaolin and 8 parts of calcium carbonate.
Uniformly mixing starch and defatted soy protein powder, continuously uniformly mixing the starch and the defatted soy protein powder with water according to the mass ratio of 1: 1, heating to 95 ℃, and stirring at the rotating speed of 200r/min for 28min to obtain gelatinized starch; heating water to 50-60 ℃, then sequentially adding polyvinyl alcohol, nano-magnesium oxide, acid modified rosin resin, alkali, kaolin, calcium carbonate, nano-silver and an emulsifier into the rest water while stirring, heating the system to 90-95 ℃, and continuously stirring for reaction for 60min to obtain an adhesive for later use;
(2) weighing the following raw materials in proportion: 80 parts of polyether polyol, 50 parts of brominated epoxy resin, 15 parts of hydroxypropyl methyl cellulose, 2 parts of aluminum hydroxide, 2 parts of magnesium hydroxide, 7 parts of nano silicon dioxide and 1 part of nano silver;
uniformly stirring polyether polyol and brominated epoxy resin, sequentially adding hydroxypropyl methyl cellulose, aluminum hydroxide, magnesium hydroxide, nano silicon dioxide and nano silver, and continuously stirring until the system is uniformly dispersed to obtain a paint layer for later use;
(3) drying the wood board at 60-70 ℃ until the water content is 1-3%, and soaking in 10mg/L sodium selenite solution at 40-45 ℃ for 3 hours; then freeze-drying the soaked wood board until the water content of the wood board is 16-18% to obtain a surface layer for later use;
(4) uniformly stirring the wood shavings and the adhesive in a mass ratio of 1: 2, and placing the mixture in a mould to be dried at the temperature of 115 ℃ and 130 ℃ for 40-55min for forming to obtain a wood shavings board layer;
(5) coating adhesive on the surface of the surface layer, the flame-retardant layer and the shaving board layer, wherein the adhesive coating amount is 180-2Then, taking the shaving board layer as a base layer, and sequentially laminating a flame-retardant layer and a surface layer on the upper surface and the lower surface to obtain a gluing board blank;
(6) painting: and (3) cold-pressing the gluing plate blank for 20min under the condition of the pressure of 1.2MPa, preheating the cold-pressed gluing plate blank for 25-30 min at the temperature of 80-90 ℃, and then carrying out hot pressing at the temperature of 148-150 ℃ until the adhesive is cured, wherein the hot pressing pressure is 4-6 MPa. And then drying the hot-pressed plate blank at 60-70 ℃ until the water content is 7-9%, coating paint on the outer surface of the surface layer, drying at the temperature of 150-160 ℃ for 20-30min to dry the paint, cutting the plywood, and sanding to obtain the antibacterial flame-retardant plywood.
Example 4
An antibacterial flame-retardant plywood is shown in figure 1 and comprises a paint layer 1, a surface layer 2, a flame-retardant layer 3 and a shaving board layer 4;
wherein, the wood shaving board layer 4 is taken as a base layer, and the upper surface and the lower surface are sequentially laminated with the flame-retardant layer 3, the surface layer 2 and the paint layer 1;
the surface layer 2 is a wood board; the flame-retardant layer 3 is a flame-retardant pc board;
the surface layer 2, the flame-retardant layer 3 and the wood shaving board layer 4 are adhered by an adhesive.
A preparation method of the antibacterial flame-retardant plywood comprises the following steps:
(1) weighing the following raw materials in proportion: 65 parts of polyvinyl alcohol, 1.3 parts of nano magnesium oxide, 6 parts of acid modified rosin resin, 3.5 parts of emulsifier, 5.5 parts of defatted soy protein powder, 5.5 parts of starch, 1.5 parts of nano silver, 1 part of alkali, 120 parts of water, 11 parts of kaolin and 7 parts of calcium carbonate.
Uniformly mixing starch and defatted soy protein powder, continuously uniformly mixing the starch and the defatted soy protein powder with water according to the mass ratio of 1: 1, heating to 95 ℃, and stirring at the rotating speed of 200r/min for 28min to obtain gelatinized starch; heating water to 50-60 ℃, then sequentially adding polyvinyl alcohol, nano-magnesium oxide, acid modified rosin resin, alkali, kaolin, calcium carbonate, nano-silver and an emulsifier into the rest water while stirring, heating the system to 90-95 ℃, and continuously stirring for reacting for 45min to obtain an adhesive for later use;
(2) weighing the following raw materials in proportion: 60 parts of polyether polyol, 35 parts of brominated epoxy resin, 7 parts of hydroxypropyl methyl cellulose, 1 part of aluminum hydroxide, 1 part of magnesium hydroxide, 6 parts of nano silicon dioxide and 0.7 part of nano silver;
uniformly stirring polyether polyol and brominated epoxy resin, sequentially adding hydroxypropyl methyl cellulose, aluminum hydroxide, magnesium hydroxide, nano silicon dioxide and nano silver, and continuously stirring until the system is uniformly dispersed to obtain a paint layer for later use;
(3) drying the wood board at 60-70 ℃ until the water content is 1-3%, and soaking in 10mg/L sodium selenite solution at 40-45 ℃ for 3 hours; then freeze-drying the soaked wood board until the water content of the wood board is 16-18% to obtain a surface layer for later use;
(4) uniformly stirring the wood shavings and the adhesive in a mass ratio of 1: 2, and placing the mixture in a mould to be dried at the temperature of 115 ℃ and 130 ℃ for 40-55min for forming to obtain a wood shavings board layer;
(5) coating adhesive on the surface of the surface layer, the flame-retardant layer and the shaving board layer, wherein the adhesive coating amount is 180-2Then, taking the shaving board layer as a base layer, and sequentially laminating a flame-retardant layer and a surface layer on the upper surface and the lower surface to obtain a gluing board blank;
(6) painting: and (3) cold-pressing the gluing plate blank for 50min under the condition that the pressure is 0.9MPa, preheating the cold-pressed gluing plate blank for 25-30 min at the temperature of 80-90 ℃, and carrying out hot pressing at the temperature of 148-150 ℃ until the adhesive is cured, wherein the hot pressing pressure is 6 MPa. And then drying the hot-pressed plate blank at 60-70 ℃ until the water content is 7-9%, coating paint on the outer surface of the surface layer, drying at the temperature of 150-160 ℃ for 20-30min to dry the paint, cutting the plywood, and sanding to obtain the antibacterial flame-retardant plywood.
Example 5
An antibacterial flame-retardant plywood is shown in figure 1 and comprises a paint layer 1, a surface layer 2, a flame-retardant layer 3 and a shaving board layer 4;
wherein, the wood shaving board layer 4 is taken as a base layer, and the upper surface and the lower surface are sequentially laminated with the flame-retardant layer 3, the surface layer 2 and the paint layer 1;
the surface layer 2 is a wood board; the flame-retardant layer 3 is a flame-retardant pc board;
the surface layer 2, the flame-retardant layer 3 and the wood shaving board layer 4 are adhered by an adhesive.
A preparation method of the antibacterial flame-retardant plywood comprises the following steps:
(1) weighing the following raw materials in proportion: 75 parts of polyvinyl alcohol, 1.4 parts of nano magnesium oxide, 9 parts of acid modified rosin resin, 4.5 parts of emulsifier, 6.5 parts of defatted soy protein powder, 6.5 parts of starch, 2.5 parts of nano silver, 2.5 parts of alkali, 140 parts of water, 11 parts of kaolin and 8 parts of calcium carbonate.
Uniformly mixing starch and defatted soy protein powder, continuously uniformly mixing the starch and the defatted soy protein powder with water according to the mass ratio of 1: 1, heating to 95 ℃, and stirring at the rotating speed of 200r/min for 28min to obtain gelatinized starch; heating water to 50-60 ℃, then sequentially adding polyvinyl alcohol, nano-magnesium oxide, acid modified rosin resin, alkali, kaolin, calcium carbonate, nano-silver and an emulsifier into the rest water while stirring, heating the system to 90-95 ℃, and continuously stirring for reaction for 55min to obtain an adhesive for later use;
(2) weighing the following raw materials in proportion: 75 parts of polyether polyol, 45 parts of brominated epoxy resin, 13 parts of hydroxypropyl methyl cellulose, 1.5 parts of aluminum hydroxide, 1.5 parts of magnesium hydroxide, 6 parts of nano silicon dioxide and 0.8 part of nano silver;
uniformly stirring polyether polyol and brominated epoxy resin, sequentially adding hydroxypropyl methyl cellulose, aluminum hydroxide, magnesium hydroxide, nano silicon dioxide and nano silver, and continuously stirring until the system is uniformly dispersed to obtain a paint layer for later use;
(3) drying the wood board at 60-70 ℃ until the water content is 1-3%, and soaking in 8mg/L sodium selenite solution at 40-45 ℃ for 5 hours; then freeze-drying the soaked wood board until the water content of the wood board is 16-18% to obtain a surface layer for later use;
(4) uniformly stirring the wood shavings and the adhesive in a mass ratio of 1: 2, and placing the mixture in a mould to be dried at the temperature of 115 ℃ and 130 ℃ for 40-55min for forming to obtain a wood shavings board layer;
(5) coating adhesive on the surface of the surface layer, the flame-retardant layer and the shaving board layer, wherein the adhesive coating amount is 180-2Then, taking the shaving board layer as a base layer, and sequentially laminating a flame-retardant layer and a surface layer on the upper surface and the lower surface to obtain a gluing board blank;
(6) painting: and (3) cold-pressing the gluing plate blank for 30min under the condition that the pressure is 1.1MPa, preheating the cold-pressed gluing plate blank for 25-30 min at the temperature of 80-90 ℃, and carrying out hot pressing at the temperature of 148-150 ℃ until the adhesive is cured, wherein the hot pressing pressure is 4-6 MPa. And then drying the hot-pressed plate blank at 60-70 ℃ until the water content is 7-9%, coating paint on the outer surface of the surface layer, drying at the temperature of 150-160 ℃ for 20-30min to dry the paint, cutting the plywood, and sanding to obtain the antibacterial flame-retardant plywood.
Comparative example
The preparation method of the antibacterial flame-retardant plywood is different from the embodiment 1 in that:
(1) the raw materials of the adhesive do not comprise nano silver, starch and defatted soy protein powder;
(2) does not include a flame retardant layer;
(3) aluminum hydroxide, magnesium hydroxide and nano silver are not included in the raw materials of the paint layer.
Technical effects
Selecting a proper amount of poplar veneers, preparing the plywood according to the methods of the embodiment and the comparative example respectively, and inspecting the prepared plywood according to GB/T15104-.
Table 1: production effects of production methods of example and comparative plywood
Group of The antibacterial rate% Bonding strength MPa
Example 1 86.5 2.95
Example 2 87.3 2.83
Example 3 82.1 2.91
Example 4 83.2 2.88
Example 5 86.4 2.99
Comparative example 40.1 1.01
The results in table 1 show that the antibacterial flame-retardant plywood provided by the embodiment of the invention has the advantages of higher bacteriostasis rate, higher bonding strength, high flexibility, strong buffering and bearing capacity, safety, health, better use stability, good popularization and use values and good economic benefits.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An antibacterial flame-retardant plywood is characterized by comprising a paint layer, a surface layer, a flame-retardant layer and a shaving board layer;
the wood shaving board layer is used as a base layer, and the upper surface and the lower surface are sequentially laminated with a flame-retardant layer, a surface layer and a paint layer;
the surface layer is a wood board; the flame-retardant layer is a flame-retardant pc board;
the surface layer, the flame-retardant layer and the wood shaving board layer are adhered by an adhesive.
2. The antibacterial flame-retardant plywood as claimed in claim 1, wherein the paint layer comprises the following raw materials in parts by weight:
50-80 parts of polyether polyol, 30-50 parts of brominated epoxy resin, 5-15 parts of hydroxypropyl methyl cellulose, 1-2 parts of aluminum hydroxide, 1-2 parts of magnesium hydroxide, 5-7 parts of nano silicon dioxide and 0.5-1 part of nano silver.
3. The antibacterial flame-retardant plywood as claimed in claim 1, wherein the adhesive comprises the following raw materials in parts by weight:
60-80 parts of polyvinyl alcohol, 1.2-1.5 parts of nano magnesium oxide, 5-10 parts of acid modified rosin resin, 3-5 parts of emulsifier, 5-7 parts of defatted soybean protein powder, 5-7 parts of starch, 1-3 parts of nano silver, 1-3 parts of alkali, 100 parts of water, 150 parts of kaolin and 6-8 parts of calcium carbonate.
4. The preparation method of the antibacterial flame-retardant plywood according to any one of claims 1 to 3, characterized by comprising the following steps:
(1) uniformly mixing starch and defatted soy protein powder, continuously uniformly mixing the starch and the defatted soy protein powder with water according to the mass ratio of 1: 1, heating to 95 ℃, and stirring at the rotating speed of 200r/min for 28min to obtain gelatinized starch; heating water to 50-60 ℃, then sequentially adding the polyvinyl alcohol, the nano magnesium oxide, the acid modified rosin resin, the alkali, the kaolin, the nano silver, the calcium carbonate and the emulsifier into the rest water while stirring, heating the system to 90-95 ℃, and continuously stirring for reacting for 40-60min to obtain an adhesive for later use;
(2) uniformly stirring the polyether polyol and the brominated epoxy resin, sequentially adding hydroxypropyl methyl cellulose, aluminum hydroxide, magnesium hydroxide, nano silicon dioxide and nano silver, and continuously stirring until the system is uniformly dispersed to obtain a paint layer for later use;
(3) drying the wood board, soaking the wood board in 8-10mg/L sodium selenite solution, and freeze-drying to obtain a surface layer for later use;
(4) uniformly stirring wood shavings and the adhesive in a mass ratio of 1: 2, and placing the mixture in a mould for drying and forming to obtain a wood shavings board layer;
(5) coating the adhesive on the surface layers of the surface layer, the flame-retardant layer and the shaving board layer, and then sequentially laminating the flame-retardant layer and the surface layer on the upper surface and the lower surface by taking the shaving board layer as a base layer to obtain a glue-coated plate blank;
(6) painting: and (3) carrying out cold pressing and hot pressing on the glued board blank until the adhesive is cured, drying at 60-70 ℃ until the water content is 7-9%, then coating paint on the outer surface of the surface layer, cutting after drying, and sanding to obtain the antibacterial flame-retardant plywood.
5. The method for preparing the antibacterial flame-retardant plywood as claimed in claim 4, wherein in the step (3), the drying temperature is 60-70 ℃, and the plywood is dried until the water content is 1-3%;
the soaking temperature is 40-45 ℃, and the soaking time is 3-5 hours;
and freeze-drying until the water content of the wood board is 16-18%.
6. The method for preparing antibacterial flame-retardant plywood as claimed in claim 4, wherein in step (4), the drying temperature is 115-130 ℃ and the drying time is 40-55 min.
7. The method for preparing antibacterial flame-retardant plywood as claimed in claim 4, wherein the coating amount of the adhesive in step (5) is 180-190g/m2。
8. The method for preparing the antibacterial flame-retardant plywood as claimed in claim 4, wherein in the step (6), the cold pressing pressure is 0.8-1.2MPa, and the cold pressing time is 20-60 min.
9. The method for preparing antibacterial flame-retardant plywood according to claim 8, wherein the hot-pressing in step (6) comprises the following steps:
preheating the cold-pressed gluing plate blank at 80-90 ℃ for 25-30 minutes, and then carrying out hot pressing at 148-150 ℃ until the adhesive is cured, wherein the hot pressing pressure is 4-6 MPa.
10. The method for preparing antibacterial flame-retardant plywood as claimed in claim 9, wherein in step (6), the drying temperature is 150-160 ℃ and the drying time is 20-30 min.
CN202111297028.2A 2021-11-03 2021-11-03 Antibacterial flame-retardant plywood and preparation method thereof Pending CN113977711A (en)

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Application publication date: 20220128