CN110341262B - Preparation method of moisture-proof flame-retardant plywood - Google Patents
Preparation method of moisture-proof flame-retardant plywood Download PDFInfo
- Publication number
- CN110341262B CN110341262B CN201910604855.8A CN201910604855A CN110341262B CN 110341262 B CN110341262 B CN 110341262B CN 201910604855 A CN201910604855 A CN 201910604855A CN 110341262 B CN110341262 B CN 110341262B
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- Prior art keywords
- parts
- adhesive
- wood
- single board
- criss
- Prior art date
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Classifications
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- 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
- B32B21/13—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board all layers being exclusively wood
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- 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
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- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C09J161/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
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- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C09J161/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
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- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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- C08K2003/387—Borates
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- C08L2201/00—Properties
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The application discloses a preparation method of a damp-proof flame-retardant plywood, a group of veneers or a group of veneers are dried and then are adjacent to each other and coated with an adhesive to prepare a plate blank, the plate blank is dried after being cold-pressed and hot-pressed, and then is cut, edge sawed, surface finished, sanded and polished, and then a primer and a finish are sprayed; the product has the bonding strength of 50-70MPa and the mould inhibition rate of 78.4-83.6%, meets the fire protection standard of building interior decoration design of GB50222, reaches the requirement of flame retardant grade B1-C, has the flame tip height of 17-84mm within 20s, and has the paint film hardness of 2-4H.
Description
Technical Field
The invention relates to the technical field of plywood, in particular to a preparation method of moisture-proof flame-retardant plywood.
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 plywood is one of common furniture materials, is one of three large plates of an artificial plate, and can also be used as a material for airplanes, ships, trains, automobiles, buildings, packing boxes and the like. A group of veneers are typically assembled and glued perpendicular to each other in the direction of the adjacent layers of wood grain, and the skins and inner sheets are typically symmetrically disposed on either side of the center layer or core. The glued veneer is pressed into the wood grain board blank by the criss-cross matching of the glued veneer according to the wood grain direction under the condition of heating or not heating. The number of layers is generally odd, and a few are even. The difference of physical and mechanical properties in the longitudinal and transverse directions is small. The types of plywood commonly used are plywood, plywood and the like. The plywood can improve the utilization rate of the wood and is a main way for saving the wood.
Disclosure of Invention
The invention provides a preparation method of a damp-proof flame-retardant plywood, which solves the technical problems of high formaldehyde content, poor mildew-proof effect, poor flame retardance, poor water resistance, low strength and the like in the existing plywood.
The invention adopts the following technical scheme:
a preparation method of a damp-proof flame-retardant plywood comprises the following steps:
the first step is as follows: heating and drying a group of veneers or a group of veneers at 60-70 ℃ until the water content is 8-14%, soaking the dried veneers or veneers in a sodium selenite solution with the mass concentration of 8-10mg/L at 40-50 ℃ for 2-3h, then performing ultrasonic treatment at 31-33KHz for 30-40min, and then performing freeze drying at-40 ℃ until the water content is 6-10%, wherein the veneers are rotationally cut into the thickness of 0.8-1.2mm by a beech section, a eucalyptus section, a cedar section, a oak section, a rosewood section and a cherry section, and the veneers are cut into the thickness of 0.8-1.2mm by a camphor wood square, a birch wood square, a water-bent willow wood square, a water-green oak square, an elm square and a walnut wood square by a planer and are cut into the thickness of 0.8-1.2 mm;
the second step is that: 100 parts of phenolic resin adhesive, 2-6 parts of chitin, 1-5 parts of tourmaline powder, 3-5 parts of ammonium sulfate, 2-4 parts of phenol, 3.5-4.5 parts of diethylenetriamine, 0.5-2.5 parts of tackifier, 5-7 parts of corn starch slurry, 10-30 parts of curing agent, 0.5-1 part of coupling agent, 0.5-5.5 parts of isobutyltriethoxysilane, 1-3 parts of anti-aging agent, 5-15 parts of diethylenetriamine, 3-5 parts of compatilizer and 1-3 parts of lignin are heated to 40-60 ℃ and uniformly mixed, and then put into a grinding machine to be ground for 20-40min to obtain the adhesive A;
the third step: 100 parts of melamine resin adhesive, 1.2-1.8 parts of formaldehyde, 0.02-0.1 part of sodium hydroxide, 0.02-0.06 part of formic acid, 1.5-3.5 parts of TTMAP, 20-40 parts of urea, 2-4 parts of hexamethylenetetramine, 10-20 parts of tackifier, 0.2-0.6 part of ammonium chloride, 0.01-0.05 part of sodium pyrophosphate, 2-7 parts of ammonia water, 0.1-1 part of trichloro insecticidal ester and 6-10 parts of flame retardant are mixed uniformly after being heated to 90-110 ℃ and then put into a sand mill for grinding for 25-35min to obtain adhesive B;
the fourth step: 100 parts of urea-formaldehyde resin adhesive, 1-2 parts of anion powder, 0.8-1.2 parts of cold catalyst, 4-8 parts of konjac flour, 0.1-0.5 part of melamine, 6-10 parts of light acrylamide, 3-7 parts of TMMP5, 30-50 parts of activated carbon powder, 3-5 parts of pentaerythritol tris (3-aziridinyl) propionate, 0.3-0.5 part of thiourea, 1-3 parts of plasticizer and 1.2-1.8 parts of curing agent are heated to 85-95 ℃ and uniformly mixed, and then put into a grinding machine to be ground for 65-75min to obtain adhesive C;
the fifth step: 100 parts of phenolic resin adhesive, 3-5 parts of diphenylmethane diisocyanate, 0.5-2.5 parts of acrylamide, 5-10 parts of formaldehyde scavenger, 0.1-0.3 part of anti-aging agent, 5-10 parts of ammonium bicarbonate, 0.2-0.8 part of oxalic acid, 10-20 parts of fish glue, 0.6-1 part of foaming agent, 3-7 parts of mica powder, 4-8 parts of hydrogenated rosin and 3-5 parts of dispersing agent are heated to 80-90 ℃ and are uniformly mixed, and then the mixture is put into a sand mill to be ground for 20-40min to obtain adhesive D;
and a sixth step: 100 parts of isobutyl acetate, 0.1-1 part of fumed silica, 1-10 parts of styrene, 1-5 parts of diatomite, 3-5 parts of talcum powder, 2.5-4.5 parts of zinc stearate, 2-4 parts of kaolin, 4-6 parts of precipitated barium sulfate, 10-15 parts of cyclohexanone, 0.02-0.06 part of butyl acetate cellulose, 0.01-0.05 part of p-methoxyphenol, 5-25 parts of 1, 2-propylene glycol and 18-22 parts of maleic anhydride are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 60-100 ℃ while stirring, the reflux reaction is carried out for 2-6h, and then the priming paint is obtained by grinding and filtering by a sand mill;
the seventh step: 100 parts of water, 0.5-2.5 parts of benzoin ethyl ether, 15.5-17.5 parts of cyclohexane, 10-30 parts of dimethylbenzene, 20-40 parts of glycerin rosin ester, 10-20 parts of methyl methacrylate, 6-10 parts of butyl acetate, 5-25 parts of rutile titanium dioxide, 10-20 parts of methyl ethyl ketone, 8-12 parts of lactitol, 11-13 parts of polyacrylic resin, 14-18 parts of chlorinated paraffin, 0.1-0.2 part of pentachlorophenol, 1-3 parts of dibutyl phthalate and 0.05-0.25 part of benzoyl peroxide are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 200 ℃ while stirring, the reflux reaction is carried out for 1-10 hours, and then the mixture is ground by a three-roll machine to obtain finish paint;
eighth step: coating adhesive A on the upper surface and the lower surface of a freeze-dried single board or a group of thin wood by taking a cherry single board as a board core, adhering beech single boards on the upper surface and the lower surface of the board core in a criss-cross manner according to the wood grain direction, coating adhesive B on the beech single board, adhering a eucalyptus single board on the beech single board in a criss-cross manner according to the wood grain direction, coating adhesive C on the eucalyptus single board, adhering a cedar single board on the eucalyptus single board in a criss-cross manner according to the wood grain direction, coating adhesive D on the cedar single board, adhering an oak single board on the cedar single board in a criss-cross manner according to the wood grain direction, coating adhesive A on the oak single board, and adhering a rosewood single board on the oak single board in a criss-cross manner according to the wood grain direction; or coating adhesive A on the upper and lower surfaces of the walnut wood veneer as the veneer core, adhering Cinnamomum camphora wood veneer on the upper and lower surfaces of the veneer core in a criss-cross manner according to the wood grain direction, coating adhesive B on the Cinnamomum camphora wood veneer, and adhering Cinnamomum camphora wood veneer in a criss-cross manner according to the wood grain directionCoating adhesive C on the birch veneer, adhering the Fraxinus mandshurica veneer on the birch veneer in a crisscross mode according to the wood grain direction, coating adhesive D on the Fraxinus mandshurica veneer, adhering the Fraxinus mandshurica veneer on the Fraxinus mandshurica veneer in a crisscross mode according to the wood grain direction, coating adhesive A on the Fraxinus mandshurica veneer, adhering the Fraxinus mandshurica veneer on the Fraxinus mandshurica veneer in a crisscross mode according to the wood grain direction, wherein the coating mode adopts a glue spraying or spraying mode, the glue coating amount is 240g/m plus material/200 g/m plus material2Forming a slab, and arranging the slab at a ratio of 4-12kg/cm2Cold pressing under pressure for 20-50min, preheating the cold-pressed plate blank at 90-100 deg.C for 15-25min, and hot pressing at 155-165 deg.C under pressure of 6-8 kg/cm2Hot pressing for 20-30min, and reducing pressure to 3-4 kg/cm after the glue layer between the plate blanks is solidified and formed2Obtaining a hot-pressed plate blank;
the ninth step: drying the hot-pressed plate blank at 60-70 ℃ until the water content is 7-9%, placing the dried plate blank at room temperature for 1-2d, performing post-rotation cutting or plane slicing shearing, trimming, surface finishing, sanding and polishing;
the tenth step: spraying a primer, baking at 45-55 ℃ for 20-30min, curing, spraying a finish on the primer, air-drying for 10-30min, and standing for 10-12h to obtain the moisture-proof flame-retardant plywood.
As a preferred technical scheme of the invention: the spraying thickness of the primer and the finish paint is 0.2-0.4 mm.
As a preferred technical scheme of the invention: the anti-aging agent is characterized in that the tackifier is polyvinyl alcohol, the flame retardant is aluminum hydroxide, the plasticizer is acetic acid bis-stearamide, the formaldehyde catching agent is soybean powder, the foaming agent is nekal, the dispersing agent is sodium hexametaphosphate, the curing agent is ammonium chloride, the coupling agent is KH550, the compatilizer is MBS compatilizer, and the anti-aging agent is calcium hydroxide or anti-aging agent 264.
As a preferred technical scheme of the invention: the adhesive A comprises the following components in parts by mass: 100 parts of phenolic resin adhesive, 4 parts of chitin, 3 parts of tourmaline powder, 4 parts of ammonium sulfate, 3 parts of phenol, 4 parts of diethylenetriamine, 1.5 parts of tackifier, 6 parts of corn starch slurry, 20 parts of curing agent, 0.8 part of coupling agent, 3.5 parts of isobutyl triethoxysilane, 2 parts of anti-aging agent, 10 parts of diethylenetriamine, 4 parts of compatilizer and 2 parts of lignin.
As a preferred technical scheme of the invention: the adhesive B comprises the following components in parts by mass: 100 parts of melamine resin adhesive, 1.5 parts of formaldehyde, 0.06 part of sodium hydroxide, 0.04 part of formic acid, 2.5 parts of TTMAP, 30 parts of urea, 3 parts of hexamethylenetetramine, 15 parts of tackifier, 0.4 part of ammonium chloride, 0.03 part of sodium pyrophosphate, 5 parts of ammonia water, 0.5 part of trichloro-insecticidal ester and 8 parts of flame retardant.
As a preferred technical scheme of the invention: the adhesive C comprises the following components in parts by mass: 100 parts of urea-formaldehyde resin adhesive, 1.5 parts of anion powder, 1 part of cold catalyst, 6 parts of konjac flour, 0.3 part of melamine, 8 parts of light acrylamide, 6 parts of TMMP, 40 parts of activated carbon powder, 4 parts of pentaerythritol tris (3-aziridinyl) propionate, 0.4 part of thiourea, 2 parts of plasticizer and 1.5 parts of curing agent.
As a preferred technical scheme of the invention: the adhesive D comprises the following components in parts by mass: 100 parts of phenolic resin adhesive, 4 parts of diphenylmethane diisocyanate, 1.5 parts of acrylamide, 8 parts of formaldehyde catching agent, 0.2 part of anti-aging agent, 8 parts of ammonium bicarbonate, 0.5 part of oxalic acid, 15 parts of fish glue, 0.8 part of foaming agent, 5 parts of mica powder, 6 parts of hydrogenated rosin and 4 parts of dispersing agent.
As a preferred technical scheme of the invention: the primer comprises the following components in parts by mass: 100 parts of isobutyl acetate, 0.5 part of fumed silica, 5 parts of styrene, 3 parts of diatomite, 4 parts of talcum powder, 3.5 parts of zinc stearate, 3 parts of kaolin, 5 parts of precipitated barium sulfate, 13 parts of cyclohexanone, 0.04 part of butyl acetate cellulose, 0.03 part of p-methoxyphenol, 15 parts of 1, 2-propylene glycol and 20 parts of maleic anhydride.
As a preferred technical scheme of the invention: the finishing paint comprises the following components in parts by mass: 100 parts of water, 1.5 parts of benzoin ethyl ether, 16.5 parts of cyclohexane, 20 parts of xylene, 30 parts of glycerol rosin ester, 15 parts of methyl methacrylate, 8 parts of butyl acetate, 15 parts of rutile type titanium dioxide, 15 parts of methyl ethyl ketone, 10 parts of lactitol, 12 parts of polyacrylic resin, 16 parts of chlorinated paraffin, 0.15 part of pentachlorophenol, 2 parts of dibutyl phthalate and 0.15 part of benzoyl peroxide.
All the raw materials used in the invention are known, and the using method and the functions are the prior art.
Advantageous effects
Compared with the prior art, the preparation method of the moisture-proof flame-retardant plywood provided by the invention adopts the technical scheme, and has the following technical effects: 1. the product has the advantages of aging resistance, good low temperature resistance, excellent weather resistance, durability, moisture resistance and steam treatment resistance, and long-acting aldehyde cleaning; 2. the sound insulation performance is good, the mothproof performance, the sterilization performance and the rat resistance performance are good, and the bonding strength is 50-70 MPa; 3. the TVOC release amount and the formaldehyde release amount are low, the formaldehyde removal rate is high, free formaldehyde in the air can be adsorbed, the formaldehyde is decomposed into water and oxime, the micro-cracking is prevented, the water resistance is good, the moisture and mildew are prevented, and the mildew inhibition rate is 78.4-83.6%; 4. the flame-retardant material meets GB50222 fire standard for interior decoration design of buildings, has excellent flame-retardant effect, achieves the requirement of flame-retardant grade B1-C, has good smoke suppression performance, the height of a flame tip within 20s is 17-84mm, and the toxicity of smoke is low; 5. the weight is light, the strength is high, the insulation is good, the appearance is beautiful, the deformability is small, the breadth is large, the warpage is avoided, and the tensile mechanical property of the cross striation is excellent; 6. the material has the advantages of impact resistance, 2-4H of paint film hardness, convenient construction, high screw retaining force, easily obtained raw materials, low production cost, wide application and continuous replacement of the existing material.
Detailed Description
The present invention will be described in more detail with reference to examples.
Example 1:
a preparation method of a damp-proof flame-retardant plywood comprises the following steps:
the first step is as follows: heating and drying a group of veneers or a group of veneers at 60 ℃ until the water content is 8%, soaking the dried veneers or veneers in a sodium selenite solution with the mass concentration of 8mg/L at 40 ℃ for 2h, then performing ultrasonic treatment at 31KHz for 30min, and then performing freeze drying at-40 ℃ until the water content is 6%, wherein the veneers are rotationally cut into the thickness of 0.8mm by a beech wood section, a eucalyptus wood section, a cedar wood section, a oak section, a rosewood section and a cherry wood section, and the veneers are cut into the thickness of 0.8mm by a sassafras wood section, a birch wood section, a northeast China ash wood section, a cyclocarya wood section, an elm wood section and a walnut wood section;
the second step is that: 100 parts of phenolic resin adhesive, 2 parts of chitin, 1 part of tourmaline powder, 3 parts of ammonium sulfate, 2 parts of phenol, 3.5 parts of diethylenetriamine, 0.5 part of tackifier polyvinyl alcohol, 5 parts of corn starch slurry, 10 parts of curing agent ammonium chloride, 0.5 part of KH550 coupling agent, 0.5 part of isobutyl triethoxysilane, 1 part of anti-aging agent calcium hydroxide, 5 parts of diethylenetriamine, 3 parts of MBS compatilizer and 1 part of lignin are heated to 40 ℃ and are uniformly mixed, and then put into a grinding machine to be ground for 20min to obtain the adhesive A;
the third step: 100 parts of melamine resin adhesive, 1.2 parts of formaldehyde, 0.02 part of sodium hydroxide, 0.02 part of formic acid, 1.5 parts of TTMAP, 20 parts of urea, 2 parts of hexamethylenetetramine, 10 parts of tackifier polyvinyl alcohol, 0.2 part of ammonium chloride, 0.01 part of sodium pyrophosphate, 2 parts of ammonia water, 0.1 part of trichloro-insecticidal ester and 6 parts of flame retardant aluminum hydroxide are heated to 90 ℃ and uniformly mixed, and then put into a sand mill for grinding for 25min to obtain adhesive B;
the fourth step: 100 parts of urea-formaldehyde resin adhesive, 1 part of anion powder, 0.8 part of cold catalyst, 4 parts of konjac flour, 0.1 part of melamine, 6 parts of light acrylamide, 1 part of TMMP5, 30 parts of activated carbon powder, 3 parts of pentaerythritol tris (3-aziridinyl) propionate, 0.3 part of thiourea, 1 part of plasticizer acetic acid bis-stearamide and 1.2 parts of curing agent ammonium chloride are heated to 85 ℃ and uniformly mixed, and then put into a grinding machine to be ground for 65min to obtain adhesive C;
the fifth step: 100 parts of phenolic resin adhesive, 3 parts of diphenylmethane diisocyanate, 0.5 part of acrylamide, 5 parts of formaldehyde catching agent bean powder, 0.1 part of anti-aging agent 264, 5 parts of ammonium bicarbonate, 0.2 part of oxalic acid, 10 parts of fish glue, 0.6 part of foaming agent nekal, 3 parts of mica powder, 4 parts of hydrogenated rosin and 3 parts of dispersing agent sodium hexametaphosphate are heated to 80 ℃ and uniformly mixed, and then put into a sand mill for grinding for 20min to obtain adhesive D;
and a sixth step: 100 parts of isobutyl acetate, 0.1 part of fumed silica, 1 part of styrene, 1 part of diatomite, 3 parts of talcum powder, 2.5 parts of zinc stearate, 2 parts of kaolin, 4 parts of precipitated barium sulfate, 10 parts of cyclohexanone, 0.02 part of butyl acetate cellulose, 0.01 part of p-methoxyphenol, 5 parts of 1, 2-propylene glycol and 18 parts of maleic anhydride are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 60 ℃ while stirring, reflux reaction is carried out for 2 hours, and then the primer is obtained after grinding by a sand mill and filtering;
the seventh step: putting 100 parts of water, 0.5 part of benzoin ethyl ether, 15.5 parts of cyclohexane, 10 parts of xylene, 20 parts of glycerin rosin ester, 10 parts of methyl methacrylate, 6 parts of butyl acetate, 5 parts of rutile titanium dioxide, 10 parts of methyl ethyl ketone, 8 parts of lactitol, 11 parts of polyacrylic resin, 14 parts of chlorinated paraffin, 0.1 part of pentachlorophenol, 1 part of dibutyl phthalate and 0.05 part of benzoyl peroxide into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, heating to 100 ℃ while stirring, carrying out reflux reaction for 1h, and then grinding by a three-roll machine to obtain finish paint;
eighth step: coating adhesive A on the upper surface and the lower surface of a freeze-dried single board or a group of thin wood by taking a cherry single board as a board core, adhering beech single boards on the upper surface and the lower surface of the board core in a criss-cross manner according to the wood grain direction, coating adhesive B on the beech single board, adhering a eucalyptus single board on the beech single board in a criss-cross manner according to the wood grain direction, coating adhesive C on the eucalyptus single board, adhering a cedar single board on the eucalyptus single board in a criss-cross manner according to the wood grain direction, coating adhesive D on the cedar single board, adhering an oak single board on the cedar single board in a criss-cross manner according to the wood grain direction, coating adhesive A on the oak single board, and adhering a rosewood single board on the oak single board in a criss-cross manner according to the wood grain direction; or coating adhesive A on the upper and lower surfaces of the walnut wood as a board core, adhering Cinnamomum camphora wood veneer on the upper and lower surfaces of the board core in a criss-cross manner according to the wood grain direction, coating adhesive B on the Cinnamomum camphora wood veneer, adhering birch wood veneer on the Cinnamomum camphora wood veneer in a criss-cross manner according to the wood grain direction, coating adhesive C on the birch wood veneer, adhering Fraxinus mandshurica wood veneer on the birch wood veneer in a criss-cross manner according to the wood grain direction, coating adhesive D on the Fraxinus mandshurica wood, adhering Fraxinus mandshurica wood veneer on the Fraxinus mandshurica wood in a criss-cross manner according to the wood grain direction, coating adhesive A on the Fraxinus mandshurica wood, and coating adhesive A on theGluing elm veneer on cyclobalanopsis glauca veneer in a staggered mode, wherein the glue spraying or spraying mode is adopted, and the glue coating amount is 200g/m2Forming a slab, and arranging the slab at a rate of 4kg/cm2Cold pressing under pressure for 20min, preheating the cold-pressed plate blank at 90 deg.C for 15min, and hot pressing at 155 deg.C under pressure of 6 kg/cm2Hot pressing for 20min, and reducing pressure to 3kg/cm after the glue layer between the plate blanks is solidified and formed2Obtaining a hot-pressed plate blank;
the ninth step: drying the hot-pressed plate blank at 60 ℃ until the water content is 7%, placing the dried plate blank at room temperature for 1d, performing rotary cutting or planar slicing and shearing, sawing edges, finishing the surface, sanding and polishing;
the tenth step: spraying a primer, baking at 45 ℃ for 20min for curing, spraying a finish on the primer, air-drying for 10min, and standing for 10h, wherein the spraying thickness of the primer and the finish is 0.2mm, so as to obtain the moisture-proof flame-retardant plywood.
The product has the advantages of aging resistance, good low temperature resistance, excellent weather resistance, durability, moisture resistance and steam treatment resistance, and long-acting aldehyde cleaning; the sound insulation performance is good, the mothproof performance, the sterilization performance and the rat resistance performance are good, and the bonding strength is 54.26 MPa; the TVOC release amount and the formaldehyde release amount are low, the formaldehyde removal rate is high, free formaldehyde in the air can be adsorbed, the formaldehyde is decomposed into water and oxime, the microcrack is prevented, the water resistance is good, the moisture and mildew resistance is realized, and the mildew inhibition rate is 79.31%; the flame-retardant coating meets GB50222 fire standard for interior decoration design of buildings, has excellent flame-retardant effect, achieves the requirement of flame-retardant grade B1-C, has good smoke suppression performance, the height of a flame tip within 20s is 26.71mm, and the toxicity of smoke is low; the weight is light, the strength is high, the insulation is good, the appearance is beautiful, the deformability is small, the breadth is large, the warpage is avoided, and the tensile mechanical property of the cross striation is excellent; the material has the advantages of impact resistance, 2H paint film hardness, convenient construction, high screw retaining force, easily obtained raw materials, low production cost, wide application and continuous replacement of the existing material.
Example 2:
a preparation method of a damp-proof flame-retardant plywood comprises the following steps:
the first step is as follows: heating and drying a group of veneers or a group of veneers at 70 ℃ until the water content is 14%, soaking the dried veneers or veneers in a sodium selenite solution with the mass concentration of 10mg/L at 50 ℃ for 3h, then carrying out ultrasonic treatment at 33KHz for 40min, and then carrying out freeze drying at-40 ℃ until the water content is 10%, wherein the veneers are rotationally cut into the thickness of 1.2mm by a beech wood section, a eucalyptus wood section, a cedar wood section, a oak section, a rosewood section and a cherry wood section, and the veneers are cut into the thickness of 1.2mm by a sassafras wood section, a birch wood section, a northeast China ash wood section, a cyclocarya wood section, an elm wood section and a walnut wood section;
the second step is that: 100 parts of phenolic resin adhesive, 6 parts of chitin, 5 parts of tourmaline powder, 5 parts of ammonium sulfate, 4 parts of phenol, 4.5 parts of diethylenetriamine, 2.5 parts of tackifier polyvinyl alcohol, 7 parts of corn starch slurry, 30 parts of curing agent ammonium chloride, 1 part of KH550 coupling agent, 5.5 parts of isobutyltriethoxysilane, 3 parts of anti-aging agent calcium hydroxide, 15 parts of diethylenetriamine, 5 parts of MBS compatilizer and 3 parts of lignin are heated to 60 ℃ and uniformly mixed, and then put into a grinding machine to be ground for 40min to obtain adhesive A;
the third step: 100 parts of melamine resin adhesive, 1.8 parts of formaldehyde, 0.1 part of sodium hydroxide, 0.06 part of formic acid, 3.5 parts of TTMAP, 40 parts of urea, 4 parts of hexamethylenetetramine, 20 parts of tackifier polyvinyl alcohol, 0.6 part of ammonium chloride, 0.05 part of sodium pyrophosphate, 7 parts of ammonia water, 1 part of trichloro-insecticidal ester and 10 parts of flame retardant aluminum hydroxide are heated to 110 ℃ and uniformly mixed, and then put into a sand mill for grinding for 35min to obtain an adhesive B;
the fourth step: 100 parts of urea-formaldehyde resin adhesive, 2 parts of anion powder, 1.2 parts of cold catalyst, 8 parts of konjac flour, 0.5 part of melamine, 10 parts of light acrylamide, 10 parts of TMMP7 parts, 50 parts of activated carbon powder, 5 parts of pentaerythritol tris (3-aziridinyl) propionate, 0.5 part of thiourea, 3 parts of plasticizer acetic acid bis-stearamide and 1.8 parts of curing agent ammonium chloride are heated to 95 ℃ and mixed uniformly, and then put into a grinder to grind for 75min to obtain adhesive C;
the fifth step: 100 parts of phenolic resin adhesive, 5 parts of diphenylmethane diisocyanate, 2.5 parts of acrylamide, 10 parts of formaldehyde catching agent bean powder, 0.3 part of anti-aging agent 264, 10 parts of ammonium bicarbonate, 0.8 part of oxalic acid, 20 parts of fish glue, 1 part of foaming agent nekal, 7 parts of mica powder, 8 parts of hydrogenated rosin and 5 parts of dispersing agent sodium hexametaphosphate are heated to 90 ℃ and uniformly mixed, and then put into a sand mill for grinding for 40min to obtain adhesive D;
and a sixth step: 100 parts of isobutyl acetate, 1 part of fumed silica, 10 parts of styrene, 5 parts of diatomite, 5 parts of talcum powder, 4.5 parts of zinc stearate, 4 parts of kaolin, 6 parts of precipitated barium sulfate, 15 parts of cyclohexanone, 0.06 part of butyl acetate cellulose, 0.05 part of p-methoxyphenol, 25 parts of 1, 2-propylene glycol and 22 parts of maleic anhydride are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 100 ℃ while stirring, reflux reaction is carried out for 6 hours, and then the primer is obtained after grinding by a sand mill and filtering;
the seventh step: 100 parts of water, 2.5 parts of benzoin ethyl ether, 17.5 parts of cyclohexane, 30 parts of xylene, 40 parts of glycerol rosin ester, 20 parts of methyl methacrylate, 10 parts of butyl acetate, 25 parts of rutile titanium dioxide, 20 parts of methyl ethyl ketone, 12 parts of lactitol, 13 parts of polyacrylic resin, 18 parts of chlorinated paraffin, 0.2 part of pentachlorophenol, 3 parts of dibutyl phthalate and 0.25 part of benzoyl peroxide are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 200 ℃ while stirring, the reflux reaction is carried out for 10 hours, and then the finishing paint is obtained by grinding with a three-roll machine;
eighth step: coating adhesive A on the upper surface and the lower surface of a freeze-dried single board or a group of thin wood by taking a cherry single board as a board core, adhering beech single boards on the upper surface and the lower surface of the board core in a criss-cross manner according to the wood grain direction, coating adhesive B on the beech single board, adhering a eucalyptus single board on the beech single board in a criss-cross manner according to the wood grain direction, coating adhesive C on the eucalyptus single board, adhering a cedar single board on the eucalyptus single board in a criss-cross manner according to the wood grain direction, coating adhesive D on the cedar single board, adhering an oak single board on the cedar single board in a criss-cross manner according to the wood grain direction, coating adhesive A on the oak single board, and adhering a rosewood single board on the oak single board in a criss-cross manner according to the wood grain direction; or coating adhesive A on the upper and lower surfaces of the core, adhering Cinnamomum camphora (L.) Presl on the upper and lower surfaces of the core, coating adhesive B on the Cinnamomum camphora (L.) Presl, adhering birch (L.) Presl on the birch (L.) Presl, and adhering adhesive A on the upper and lower surfaces of the core, and adhering birch (L.) Presl on the coreCoating adhesive C on a wood, adhering Fraxinus mandshurica veneer on a birch veneer in a criss-cross mode according to the wood grain direction, coating adhesive D on the Fraxinus mandshurica veneer, adhering Fraxinus mandshurica veneer on the Fraxinus mandshurica veneer in a criss-cross mode according to the wood grain direction, coating adhesive A on the Fraxinus mandshurica veneer, adhering a Fraxinus mandshurica veneer on the Fraxinus mandshurica veneer in a criss-cross mode according to the wood grain direction, wherein the coating mode adopts a glue spraying or spraying mode, the glue coating amount is 240g/m2Forming a slab, and arranging the slab at a rate of 12kg/cm2Cold pressing under pressure for 50min, preheating the cold-pressed plate blank at 100 deg.C for 25min, and hot pressing at 165 deg.C under pressure of 8kg/cm2Hot pressing for 30min, and reducing pressure to 4kg/cm after the glue layer between the plate blanks is solidified and formed2Obtaining a hot-pressed plate blank;
the ninth step: drying the hot-pressed plate blank at 70 ℃ until the water content is 9%, placing the dried plate blank at room temperature for 2d, performing rotary cutting or planar slicing and shearing, sawing edges, finishing the surface, sanding and polishing;
the tenth step: spraying a primer, baking at 55 ℃ for 30min for curing, spraying a finish on the primer, air-drying for 30min, and standing for 12h, wherein the spraying thickness of the primer and the finish is 0.4mm, so as to obtain the moisture-proof flame-retardant plywood.
The product has the advantages of aging resistance, good low temperature resistance, excellent weather resistance, durability, moisture resistance and steam treatment resistance, and long-acting aldehyde cleaning; the sound insulation performance is good, the mothproof performance, the sterilization performance and the rat resistance performance are good, and the bonding strength is 62.73 MPa; the TVOC release amount and the formaldehyde release amount are low, the formaldehyde removal rate is high, free formaldehyde in the air can be adsorbed, the formaldehyde is decomposed into water and oxime, the microcrack is prevented, the water resistance is good, the moisture and mildew resistance is realized, and the mildew inhibition rate is 81.43%; the flame-retardant coating meets GB50222 fire standard for interior decoration design of buildings, has excellent flame-retardant effect, achieves the requirement of flame-retardant grade B1-C, has good smoke suppression performance, the height of a flame tip within 20s is 72.6mm, and the toxicity of smoke is low; the weight is light, the strength is high, the insulation is good, the appearance is beautiful, the deformability is small, the breadth is large, the warpage is avoided, and the tensile mechanical property of the cross striation is excellent; the material has the advantages of impact resistance, 3H paint film hardness, convenient construction, high screw retaining force, easily obtained raw materials, low production cost, wide application and continuous replacement of the existing material.
Example 3:
a preparation method of a damp-proof flame-retardant plywood comprises the following steps:
the first step is as follows: heating and drying a group of veneers or a group of veneers at 65 ℃ until the water content is 11%, soaking the dried veneers or veneers in a sodium selenite solution with the mass concentration of 9mg/L at 45 ℃ for 2.5h, then carrying out ultrasonic treatment at 32KHz for 35min, and then carrying out freeze drying at-40 ℃ until the water content is 8%, wherein the veneers are rotationally cut into 1mm thick by a beech wood section, a eucalyptus wood section, a cedar wood section, a oak section, a rosewood section and a cherry wood section, and the veneers are cut into 1mm thick by a sassafras wood section, a birch wood section, a northeast China ash wood section, a cyclocarya wood section, an elm wood section and a walnut wood section;
the second step is that: 100 parts of phenolic resin adhesive, 4 parts of chitin, 3 parts of tourmaline powder, 4 parts of ammonium sulfate, 3 parts of phenol, 4 parts of diethylenetriamine, 1.5 parts of tackifier polyvinyl alcohol, 6 parts of corn starch slurry, 20 parts of curing agent ammonium chloride, 0.8 part of KH550 coupling agent, 3.5 parts of isobutyl triethoxysilane, 2 parts of anti-aging agent calcium hydroxide, 10 parts of diethylenetriamine, 4 parts of MBS compatilizer and 2 parts of lignin are heated to 50 ℃ and mixed uniformly, and then put into a grinding machine to be ground for 30min to obtain the adhesive A;
the third step: 100 parts of melamine resin adhesive, 1.5 parts of formaldehyde, 0.06 part of sodium hydroxide, 0.04 part of formic acid, 2.5 parts of TTMAP, 30 parts of urea, 3 parts of hexamethylenetetramine, 15 parts of tackifier polyvinyl alcohol, 0.4 part of ammonium chloride, 0.03 part of sodium pyrophosphate, 5 parts of ammonia water, 0.5 part of trichloro-insecticidal ester and 8 parts of flame retardant aluminum hydroxide are heated to 100 ℃ and mixed uniformly, and then put into a sand mill for grinding for 30min to obtain adhesive B;
the fourth step: 100 parts of urea-formaldehyde resin adhesive, 1.5 parts of anion powder, 1 part of cold catalyst, 6 parts of konjac flour, 0.3 part of melamine, 8 parts of light acrylamide, 8 parts of TMMP6 parts, 40 parts of activated carbon powder, 4 parts of pentaerythritol tris (3-aziridinyl) propionate, 0.4 part of thiourea, 2 parts of plasticizer acetic acid bis-stearamide and 1.5 parts of curing agent ammonium chloride are heated to 90 ℃ and mixed uniformly, and then put into a grinder to grind for 70min to obtain adhesive C;
the fifth step: 100 parts of phenolic resin adhesive, 4 parts of diphenylmethane diisocyanate, 1.5 parts of acrylamide, 8 parts of formaldehyde catching agent bean powder, 0.2 part of anti-aging agent 264, 8 parts of ammonium bicarbonate, 0.5 part of oxalic acid, 15 parts of fish glue, 0.8 part of foaming agent nekal, 5 parts of mica powder, 6 parts of hydrogenated rosin and 4 parts of dispersing agent sodium hexametaphosphate are mixed uniformly by mass part, and then put into a sand mill for grinding for 30min to obtain adhesive D;
and a sixth step: 100 parts of isobutyl acetate, 0.5 part of fumed silica, 5 parts of styrene, 3 parts of diatomite, 4 parts of talcum powder, 3.5 parts of zinc stearate, 3 parts of kaolin, 5 parts of precipitated barium sulfate, 13 parts of cyclohexanone, 0.04 part of butyl acetate cellulose, 0.03 part of p-methoxyphenol, 15 parts of 1, 2-propylene glycol and 20 parts of maleic anhydride are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 80 ℃ while stirring, the reflux reaction is carried out for 4 hours, and then the primer is obtained after being ground by a sand mill and filtered;
the seventh step: 100 parts of water, 1.5 parts of benzoin ethyl ether, 16.5 parts of cyclohexane, 20 parts of xylene, 30 parts of glycerol rosin ester, 15 parts of methyl methacrylate, 8 parts of butyl acetate, 15 parts of rutile titanium dioxide, 15 parts of methyl ethyl ketone, 10 parts of lactitol, 12 parts of polyacrylic resin, 16 parts of chlorinated paraffin, 0.15 part of pentachlorophenol, 2 parts of dibutyl phthalate and 0.15 part of benzoyl peroxide are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 150 ℃ while stirring, reflux reaction is carried out for 5 hours, and then grinding is carried out by a three-roll mill to obtain finish paint;
eighth step: coating adhesive A on the upper and lower surfaces of a freeze-dried single board or a group of thin wood with cherry single boards as board cores, adhering zelkova single boards on the upper and lower surfaces of the board cores in a criss-cross manner according to the wood grain direction, coating adhesive B on the zelkova single boards, adhering eucalyptus single boards on the zelkova single boards in a criss-cross manner according to the wood grain direction, coating adhesive C on the eucalyptus single boards, adhering cedar single boards on the eucalyptus single boards in a criss-cross manner according to the wood grain direction, coating adhesive D on the cedar single boards, adhering oak single boards on the cedar single boards in a criss-cross manner according to the wood grain direction, coating adhesive A on the oak single boards, adhering pear flower pears on the oak single boards in a criss-cross manner according to the wood grain directionA wood veneer; or using walnut wood veneer as a board core, coating adhesive A on the upper surface and the lower surface of the board core, adhering shanzhu wood veneer on the upper surface and the lower surface of the board core according to the criss-cross of the wood grain direction, coating adhesive B on the shanzhu wood veneer, adhering birch wood veneer on the shanzhu wood veneer according to the criss-cross of the wood grain direction, coating adhesive C on the birch wood veneer, adhering manchurian ash wood veneer on the birch wood veneer according to the criss-cross of the wood grain direction, coating adhesive D on the manchurian ash veneer, adhering manchurian ash veneer on the manchurian ash veneer according to the criss-cross of the wood grain direction, coating adhesive A on the manchurian ash veneer, adhering elm wood veneer on the manchurian wood veneer according to the criss grain direction, wherein the coating method adopts glue spraying or glue spraying mode, and the glue coating amount is 220g/m2Forming a slab, and arranging the slab at a rate of 8kg/cm2Cold pressing under pressure for 35min, preheating the cold-pressed plate blank at 95 deg.C for 20min, and hot pressing at 160 deg.C under pressure of 7 kg/cm2Hot pressing for 25min, and reducing pressure to 3.5 kg/cm after the glue layer between the plate blanks is solidified and formed2Obtaining a hot-pressed plate blank;
the ninth step: drying the hot-pressed plate blank at 65 ℃ until the water content is 8%, placing the dried plate blank at room temperature for 1.5d, performing post-rotation cutting or plane slicing and shearing, sawing edges, performing surface finishing, sanding and polishing;
the tenth step: spraying a primer, baking at 50 ℃ for 25min for curing, spraying a finish on the primer, air-drying for 20min, and standing for 11h, wherein the spraying thickness of the primer and the finish is 0.3mm, so as to obtain the moisture-proof flame-retardant plywood.
The product has the advantages of aging resistance, good low temperature resistance, excellent weather resistance, durability, moisture resistance and steam treatment resistance, and long-acting aldehyde cleaning; the sound insulation performance is good, the mothproof performance, the sterilization performance and the rat resistance performance are good, and the bonding strength is 70 MPa; the TVOC release amount and the formaldehyde release amount are low, the formaldehyde removal rate is high, free formaldehyde in the air can be adsorbed, the formaldehyde is decomposed into water and oxime, the microcrack is prevented, the water resistance is good, the moisture and mildew are prevented, and the mildew inhibition rate is 83.6%; the flame-retardant material meets GB50222 fire standard for interior decoration design of buildings, has excellent flame-retardant effect, achieves the requirement of flame-retardant grade B1-C, has good smoke suppression performance, the height of a flame tip within 20s is 17mm, and the toxicity of smoke is low; the weight is light, the strength is high, the insulation is good, the appearance is beautiful, the deformability is small, the breadth is large, the warpage is avoided, and the tensile mechanical property of the cross striation is excellent; the material has the advantages of impact resistance, 4H paint film hardness, convenient construction, high screw retaining force, easily obtained raw materials, low production cost, wide application and continuous replacement of the existing material.
The above-described embodiments are intended to be illustrative, but not limiting, of the present invention, and therefore any changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (9)
1. A preparation method of a damp-proof flame-retardant plywood is characterized by comprising the following steps:
the first step is as follows: heating and drying a group of veneers or a group of veneers at 60-70 ℃ until the water content is 8-14%, soaking the dried veneers or veneers in a sodium selenite solution with the mass concentration of 8-10mg/L at 40-50 ℃ for 2-3h, then performing ultrasonic treatment at 31-33KHz for 30-40min, and then performing freeze drying at-40 ℃ until the water content is 6-10%, wherein the veneers are rotationally cut into the thickness of 0.8-1.2mm by a beech section, a eucalyptus section, a cedar section, a oak section, a rosewood section and a cherry section, and the veneers are cut into the thickness of 0.8-1.2mm by a camphor wood square, a birch wood square, a water-bent willow wood square, a water-green oak square, an elm square and a walnut wood square by a planer and are cut into the thickness of 0.8-1.2 mm;
the second step is that: 100 parts of phenolic resin adhesive, 2-6 parts of chitin, 1-5 parts of tourmaline powder, 3-5 parts of ammonium sulfate, 2-4 parts of phenol, 3.5-4.5 parts of diethylenetriamine, 0.5-2.5 parts of tackifier, 5-7 parts of corn starch slurry, 10-30 parts of curing agent, 0.5-1 part of coupling agent, 0.5-5.5 parts of isobutyltriethoxysilane, 1-3 parts of anti-aging agent, 5-15 parts of diethylenetriamine, 3-5 parts of compatilizer and 1-3 parts of lignin are heated to 40-60 ℃ and uniformly mixed, and then put into a grinding machine to be ground for 20-40min to obtain the adhesive A;
the third step: 100 parts of melamine resin adhesive, 1.2-1.8 parts of formaldehyde, 0.02-0.1 part of sodium hydroxide, 0.02-0.06 part of formic acid, 1.5-3.5 parts of TTMAP, 20-40 parts of urea, 2-4 parts of hexamethylenetetramine, 10-20 parts of tackifier, 0.2-0.6 part of ammonium chloride, 0.01-0.05 part of sodium pyrophosphate, 2-7 parts of ammonia water, 0.1-1 part of trichloro insecticidal ester and 6-10 parts of flame retardant are mixed uniformly after being heated to 90-110 ℃ and then put into a sand mill for grinding for 25-35min to obtain adhesive B;
the fourth step: 100 parts of urea-formaldehyde resin adhesive, 1-2 parts of anion powder, 0.8-1.2 parts of cold catalyst, 4-8 parts of konjac flour, 0.1-0.5 part of melamine, 6-10 parts of light acrylamide, 3-7 parts of TMMP5, 30-50 parts of activated carbon powder, 3-5 parts of pentaerythritol tris (3-aziridinyl) propionate, 0.3-0.5 part of thiourea, 1-3 parts of plasticizer and 1.2-1.8 parts of curing agent are heated to 85-95 ℃ and uniformly mixed, and then put into a grinding machine to be ground for 65-75min to obtain adhesive C;
the fifth step: 100 parts of phenolic resin adhesive, 3-5 parts of diphenylmethane diisocyanate, 0.5-2.5 parts of acrylamide, 5-10 parts of formaldehyde scavenger, 0.1-0.3 part of anti-aging agent, 5-10 parts of ammonium bicarbonate, 0.2-0.8 part of oxalic acid, 10-20 parts of fish glue, 0.6-1 part of foaming agent, 3-7 parts of mica powder, 4-8 parts of hydrogenated rosin and 3-5 parts of dispersing agent are heated to 80-90 ℃ and are uniformly mixed, and then the mixture is put into a sand mill to be ground for 20-40min to obtain adhesive D;
and a sixth step: 100 parts of isobutyl acetate, 0.1-1 part of fumed silica, 1-10 parts of styrene, 1-5 parts of diatomite, 3-5 parts of talcum powder, 2.5-4.5 parts of zinc stearate, 2-4 parts of kaolin, 4-6 parts of precipitated barium sulfate, 10-15 parts of cyclohexanone, 0.02-0.06 part of butyl acetate cellulose, 0.01-0.05 part of p-methoxyphenol, 5-25 parts of 1, 2-propylene glycol and 18-22 parts of maleic anhydride are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 60-100 ℃ while stirring, the reflux reaction is carried out for 2-6h, and then the priming paint is obtained by grinding and filtering by a sand mill;
the seventh step: 100 parts of water, 0.5-2.5 parts of benzoin ethyl ether, 15.5-17.5 parts of cyclohexane, 10-30 parts of dimethylbenzene, 20-40 parts of glycerin rosin ester, 10-20 parts of methyl methacrylate, 6-10 parts of butyl acetate, 5-25 parts of rutile titanium dioxide, 10-20 parts of methyl ethyl ketone, 8-12 parts of lactitol, 11-13 parts of polyacrylic resin, 14-18 parts of chlorinated paraffin, 0.1-0.2 part of pentachlorophenol, 1-3 parts of dibutyl phthalate and 0.05-0.25 part of benzoyl peroxide are put into a reaction kettle provided with a stirrer, a thermometer and a reflux condenser, the temperature is raised to 200 ℃ while stirring, the reflux reaction is carried out for 1-10 hours, and then the mixture is ground by a three-roll machine to obtain finish paint;
eighth step: coating adhesive A on the upper surface and the lower surface of a freeze-dried single board or a group of thin wood by taking a cherry single board as a board core, adhering beech single boards on the upper surface and the lower surface of the board core in a criss-cross manner according to the wood grain direction, coating adhesive B on the beech single board, adhering a eucalyptus single board on the beech single board in a criss-cross manner according to the wood grain direction, coating adhesive C on the eucalyptus single board, adhering a cedar single board on the eucalyptus single board in a criss-cross manner according to the wood grain direction, coating adhesive D on the cedar single board, adhering an oak single board on the cedar single board in a criss-cross manner according to the wood grain direction, coating adhesive A on the oak single board, and adhering a rosewood single board on the oak single board in a criss-cross manner according to the wood grain direction; or using walnut wood veneer as a board core, coating adhesive A on the upper surface and the lower surface of the board core, adhering cinnamomum kanehirae wood veneer on the upper surface and the lower surface of the board core in a criss-cross mode according to the wood grain direction, coating adhesive B on the cinnamomum kanehirae wood veneer, adhering birch wood veneer on the cinnamomum kanehirae wood veneer in a criss-cross mode according to the wood grain direction, coating adhesive C on the birch wood veneer, adhering salix mandshurica veneer on the birch wood veneer in a criss-cross mode according to the wood grain direction, coating adhesive D on the salix mandshurica veneer, adhering salix mandshurica veneer on the salix mandshurica wood in a criss-cross mode according to the wood grain direction, coating adhesive A on the salix mandshurica veneer in a criss mode according to the wood grain direction, and coating the glue amount of 240g/m2Forming a slab, and arranging the slab at a ratio of 4-12kg/cm2Cold pressing under pressure for 20-50min, preheating the cold-pressed plate blank at 90-100 deg.C for 15-25min, and hot pressing at 155-165 deg.C under pressure of 6-8 kg/cm2Hot pressing for 20-30min, and reducing pressure to 3-4 kg/cm after the glue layer between the plate blanks is solidified and formed2Obtaining a hot-pressed plate blank;
the ninth step: drying the hot-pressed plate blank at 60-70 ℃ until the water content is 7-9%, placing the dried plate blank at room temperature for 1-2d, performing post-rotation cutting or plane slicing shearing, trimming, surface finishing, sanding and polishing;
the tenth step: spraying a primer, baking at 45-55 ℃ for 20-30min, curing, spraying a finish on the primer, air-drying for 10-30min, and standing for 10-12h to obtain the moisture-proof flame-retardant plywood.
2. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the spraying thickness of the primer and the finish paint is 0.2-0.4 mm.
3. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the anti-aging agent is characterized in that the tackifier is polyvinyl alcohol, the flame retardant is aluminum hydroxide, the plasticizer is acetic acid bis-stearamide, the formaldehyde catching agent is soybean powder, the foaming agent is nekal, the dispersing agent is sodium hexametaphosphate, the curing agent is ammonium chloride, the coupling agent is KH550, the compatilizer is MBS compatilizer, and the anti-aging agent is calcium hydroxide or anti-aging agent 264.
4. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the adhesive A comprises the following components in parts by mass: 100 parts of phenolic resin adhesive, 4 parts of chitin, 3 parts of tourmaline powder, 4 parts of ammonium sulfate, 3 parts of phenol, 4 parts of diethylenetriamine, 1.5 parts of tackifier, 6 parts of corn starch slurry, 20 parts of curing agent, 0.8 part of coupling agent, 3.5 parts of isobutyl triethoxysilane, 2 parts of anti-aging agent, 10 parts of diethylenetriamine, 4 parts of compatilizer and 2 parts of lignin.
5. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the adhesive B comprises the following components in parts by mass: 100 parts of melamine resin adhesive, 1.5 parts of formaldehyde, 0.06 part of sodium hydroxide, 0.04 part of formic acid, 2.5 parts of TTMAP, 30 parts of urea, 3 parts of hexamethylenetetramine, 15 parts of tackifier, 0.4 part of ammonium chloride, 0.03 part of sodium pyrophosphate, 5 parts of ammonia water, 0.5 part of trichloro-insecticidal ester and 8 parts of flame retardant.
6. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the adhesive C comprises the following components in parts by mass: 100 parts of urea-formaldehyde resin adhesive, 1.5 parts of anion powder, 1 part of cold catalyst, 6 parts of konjac flour, 0.3 part of melamine, 8 parts of light acrylamide, 6 parts of TMMP, 40 parts of activated carbon powder, 4 parts of pentaerythritol tris (3-aziridinyl) propionate, 0.4 part of thiourea, 2 parts of plasticizer and 1.5 parts of curing agent.
7. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the adhesive D comprises the following components in parts by mass: 100 parts of phenolic resin adhesive, 4 parts of diphenylmethane diisocyanate, 1.5 parts of acrylamide, 8 parts of formaldehyde catching agent, 0.2 part of anti-aging agent, 8 parts of ammonium bicarbonate, 0.5 part of oxalic acid, 15 parts of fish glue, 0.8 part of foaming agent, 5 parts of mica powder, 6 parts of hydrogenated rosin and 4 parts of dispersing agent.
8. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the primer comprises the following components in parts by mass: 100 parts of isobutyl acetate, 0.5 part of fumed silica, 5 parts of styrene, 3 parts of diatomite, 4 parts of talcum powder, 3.5 parts of zinc stearate, 3 parts of kaolin, 5 parts of precipitated barium sulfate, 13 parts of cyclohexanone, 0.04 part of butyl acetate cellulose, 0.03 part of p-methoxyphenol, 15 parts of 1, 2-propylene glycol and 20 parts of maleic anhydride.
9. The method for preparing moisture-proof flame-retardant plywood according to claim 1, wherein the method comprises the following steps: the finishing paint comprises the following components in parts by mass: 100 parts of water, 1.5 parts of benzoin ethyl ether, 16.5 parts of cyclohexane, 20 parts of xylene, 30 parts of glycerol rosin ester, 15 parts of methyl methacrylate, 8 parts of butyl acetate, 15 parts of rutile type titanium dioxide, 15 parts of methyl ethyl ketone, 10 parts of lactitol, 12 parts of polyacrylic resin, 16 parts of chlorinated paraffin, 0.15 part of pentachlorophenol, 2 parts of dibutyl phthalate and 0.15 part of benzoyl peroxide.
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| CN110843317A (en) * | 2019-11-19 | 2020-02-28 | 湖州佳川木业有限公司 | Processing method of solid wood composite board |
| CN111844331A (en) * | 2020-06-30 | 2020-10-30 | 南京林业大学 | Preparation method of intelligent anti-skidding solid wood composite floor |
| CN111873104A (en) * | 2020-06-30 | 2020-11-03 | 南京林业大学 | Preparation method of intelligent temperature control solid wood composite floor |
| CN114800724A (en) * | 2021-01-29 | 2022-07-29 | 福建茂增木业有限公司 | Preparation process of novel waterproof and moistureproof plywood |
| CN113482501A (en) * | 2021-06-09 | 2021-10-08 | 南京林业大学 | Preparation method of multifunctional flame-retardant solid wood composite door |
| CN113524376A (en) * | 2021-06-09 | 2021-10-22 | 南京林业大学 | Preparation method of composite solid wood door with remotely-known opening and closing states |
| CN113894885B (en) * | 2021-10-25 | 2022-12-20 | 山东明川木业集团有限公司 | Odd plywood's system of binding |
| CN114653563B (en) * | 2022-02-11 | 2023-04-14 | 北新国际木业有限公司 | Surface flame-retardant treatment method for OSB (oriented strand board) and flame-retardant OSB |
| CN115182473A (en) * | 2022-07-18 | 2022-10-14 | 浙江保罗蓝森塑业有限公司 | Wooden fireproof sound insulation board and manufacturing method thereof |
| CN116214646A (en) * | 2023-03-06 | 2023-06-06 | 临沂明拓木业有限公司 | Production process of color core plywood |
| CN116408859B (en) * | 2023-06-09 | 2023-08-11 | 潍坊万丰新材料科技有限公司 | Flame retardant composition and application thereof in anti-corrosion flame-retardant wood |
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Application publication date: 20191018 Assignee: NANJING TOUSHI TECH Co. Assignor: NANJING FORESTRY University Contract record no.: X2024980003392 Denomination of invention: A preparation method for moisture-proof and flame-retardant plywood Granted publication date: 20210518 License type: Common License Record date: 20240325 Application publication date: 20191018 Assignee: GUANGZHOU JOYTOWER ELECTRONIC TECHNOLOGY CO.,LTD. Assignor: NANJING FORESTRY University Contract record no.: X2024980003391 Denomination of invention: A preparation method for moisture-proof and flame-retardant plywood Granted publication date: 20210518 License type: Common License Record date: 20240325 |