CN110239168B - High-performance fiberboard - Google Patents

High-performance fiberboard Download PDF

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Publication number
CN110239168B
CN110239168B CN201910370818.5A CN201910370818A CN110239168B CN 110239168 B CN110239168 B CN 110239168B CN 201910370818 A CN201910370818 A CN 201910370818A CN 110239168 B CN110239168 B CN 110239168B
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parts
modified
powder
wood powder
weight
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CN110239168A (en
Inventor
邵跃骅
刘池伟
胡扬州
郭海涛
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Fuyang Dake New Materials Co ltd
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Fuyang Dake New Materials Co ltd
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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
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/0228—Spraying apparatus, e.g. tunnels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34—Organic impregnating agents
    • B27K3/50—Mixtures of different organic impregnating agents
    • 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
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • 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
    • B32B21/12—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board next to a particulate 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
    • 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
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/04—Heat treatment
    • C04B20/06—Expanding clay, perlite, vermiculite or like granular materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/025—Acrylic resin particles, e.g. polymethyl methacrylate or ethylene-acrylate copolymers
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/0257—Polyolefin particles, e.g. polyethylene or polypropylene homopolymers or ethylene-propylene copolymers
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/06—Vegetal particles
    • B32B2264/062—Cellulose particles, e.g. cotton
    • B32B2264/067—Wood particles
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/12—Mixture of at least two particles made of different materials
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention discloses a high-performance fiber board, and the prepared board has excellent bending performance and impact performance and good mechanical property. The camphor wood powder, the birch wood powder and the maple wood powder are reasonably compounded, so that the fiberboard is uniform in size and density and good in coordination, the wood powder is modified by the glucuronolactone, the acetaminophen and the polyvinyl alcohol, contains various active groups, is favorable for generating a gluing effect with adhesive components, promotes the compatibility with modified basalt fibers, and improves the mechanical property of the obtained board; the basalt fibers are modified by utilizing the diatomite and the cassava flour, a porous interface is formed on the surface of the basalt, and the interaction of the basalt fibers, the wood fibers and the adhesive is promoted, so that the frame effect is achieved, and the bending strength and the impact toughness of the obtained board are obviously improved.

Description

High-performance fiberboard
Technical Field
The invention belongs to the technical field of fiber boards, and particularly relates to a high-performance fiber board.
Background
The fiber board is an artificial board formed by interweaving lignocellulose fibers and utilizing the inherent adhesive property of the lignocellulose fibers, and the artificial board is synthesized by applying adhesive to the lignocellulose fibers or other plant cellulose fibers serving as raw materials and gluing under the action of heat and pressure. The fiberboard is widely adopted by European and American national furniture manufacturers as a novel, high-grade and environment-friendly base material, and the domestic high-grade board type furniture market also begins to adopt the board in a large area. However, the existing fiber board has limited wider application due to insufficient mechanical properties.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a high performance fiberboard.
The invention is realized by the following technical scheme:
the high-performance fiberboard is formed by sequentially adhering and pressing an upper surface layer, a middle layer and a lower surface layer from top to bottom through an adhesive, wherein the upper surface layer and the lower surface layer are solid wood sheets, the middle layer is modified filler particles, and the modified filler particles are prepared from the following raw materials in parts by weight: 40-60 parts of modified wood powder, 10-20 parts of modified basalt fiber, 5-10 parts of polymethacrylate powder, 4-6 parts of polytetrafluoroethylene powder, 10-20 parts of polyethylene powder and 3-6 parts of aluminum oxide.
Further, the preparation method of the modified filler particles comprises the following steps: putting the modified wood powder and the modified basalt fiber into a stirrer, mixing for 20-30min at the speed of 200-300rpm, adding polymethacrylate powder, polytetrafluoroethylene powder, polyethylene powder and alumina, continuously mixing and heating to 93-95 ℃, then stirring for 30-40min, granulating and cooling to obtain modified filler particles; polymethacrylate powder, polytetrafluoroethylene powder, polyethylene powder and alumina are added into the modified filler particles, so that the toughness is improved, the compactness of the modified filler particles is enhanced, and the use quality of the modified filler particles is improved.
Further, the preparation method of the modified wood powder comprises the following steps: taking 10-20 parts by weight of camphor wood powder, 10-20 parts by weight of birch wood powder and 15-20 parts by weight of maple wood powder, sieving the materials with a sieve of 200 mu m with 100-minus meshes, then putting the materials into an oven, baking the materials for 40-60min at 30-40 ℃, taking out the obtained products, then uniformly spraying a modification solution, putting the obtained products back into the oven, heating the obtained products to 50-60 ℃ at the speed of 2-3 ℃/min, continuously baking the obtained products for 60-80min, then taking out the obtained products, spraying the modification solution again, putting the obtained products back into the oven, heating the obtained products to 90-100 ℃ at the speed of 1-2 ℃/min, baking the obtained products for 30-40min, cooling the obtained products to room temperature at the speed of 3-5 ℃/min, and standing; the camphor wood powder, the birch wood powder and the maple wood powder are reasonably compounded, so that the fiberboard is uniform in size and density and good in coordination, the wood powder is modified by the glucuronolactone, the acetaminophen and the polyvinyl alcohol, contains various active groups, is favorable for generating a gluing effect with adhesive components, promotes the compatibility of the wood powder and modified basalt fibers, and improves the mechanical property of the obtained board.
Further, the preparation method of the modified basalt fiber comprises the following steps: 10-20 parts by weight of basalt fiber are placed into a roasting furnace, roasted for 2-3h at 230-240 ℃, then placed into a ball milling tank, added with 3-6 parts of diatomite and 4-8 parts of cassava powder, added with deionized water, ball milled for 30-40min at 70-90 ℃, added with 5-10 parts of polyacrylic acid emulsion with the solid content of 30-35%, and freeze-dried after ball milling for 20-30min to obtain the modified basalt fiber; the basalt fibers are modified by utilizing the diatomite and the cassava flour, a porous interface is formed on the surface of the basalt, and the interaction of the basalt fibers, the wood fibers and the adhesive is promoted, so that the frame effect is achieved, and the bending strength and the impact toughness of the obtained board are obviously improved.
Further, the modifying solution is prepared from the following raw materials in parts by weight: 5-10 parts of glucuronolactone, 3-5 parts of acetaminophen, 3-6 parts of polyvinyl alcohol and 50-100 parts of deionized water.
Further, the spraying amount of the modified liquid is 15-20% of the total weight of the wood powder.
The invention has the beneficial effects that: the plate prepared by the invention has excellent bending property and impact resistance and good mechanical property. The camphor wood powder, the birch wood powder and the maple wood powder are reasonably compounded, so that the fiberboard is uniform in size and density and good in coordination, the wood powder is modified by the glucuronolactone, the acetaminophen and the polyvinyl alcohol, contains various active groups, is favorable for generating a gluing effect with adhesive components, promotes the compatibility with modified basalt fibers, and improves the mechanical property of the obtained board; the basalt fibers are modified by utilizing the diatomite and the cassava flour, a porous interface is formed on the surface of the basalt, and the interaction of the basalt fibers, the wood fibers and the adhesive is promoted, so that a frame effect is achieved, and the bending strength and the impact toughness of the obtained board are obviously improved; polymethacrylate powder, polytetrafluoroethylene powder, polyethylene powder and alumina are added into the modified filler particles, so that the toughness is improved, the compactness of the modified filler particles is enhanced, and the use quality of the modified filler particles is improved.
Detailed Description
The invention is illustrated by the following specific examples, which are not intended to be limiting.
Example 1
The high-performance fiberboard is formed by sequentially adhering and pressing an upper surface layer, a middle layer and a lower surface layer from top to bottom through an adhesive, wherein the upper surface layer and the lower surface layer are solid wood sheets, the middle layer is modified filler particles, and the modified filler particles are prepared from the following raw materials in parts by weight: 40 parts of modified wood powder, 10 parts of modified basalt fiber, 5 parts of polymethacrylate powder, 4 parts of polytetrafluoroethylene powder, 10 parts of polyethylene powder and 3 parts of alumina.
Further, the preparation method of the modified filler particles comprises the following steps: and (2) putting the modified wood powder and the modified basalt fiber into a stirrer, mixing for 20min at the speed of 200rpm, adding polymethacrylate powder, polytetrafluoroethylene powder, polyethylene powder and aluminum oxide into the stirrer, continuously mixing and heating to 93 ℃, stirring for 30min, granulating and cooling to obtain the modified filler particles.
Further, the preparation method of the modified wood powder comprises the following steps: taking 10 parts by weight of camphor wood powder, 10 parts by weight of birch wood powder and 15 parts by weight of maple wood powder, sieving the materials with a 100-micron sieve, then placing the materials into an oven, baking the materials for 40min at 30 ℃, taking out the obtained materials, then uniformly spraying a modification liquid, then placing the materials back into the oven, heating the materials to 50 ℃ at the speed of 2 ℃/min, continuing to bake the materials for 60min, then taking out the materials, spraying the modification liquid again, placing the materials back, heating the materials to 90 ℃ at the speed of 1 ℃/min, baking the materials for 30min, cooling the materials to room temperature at the speed of 3 ℃/min, and placing the materials for 5h to obtain the modified wood.
Further, the preparation method of the modified basalt fiber comprises the following steps: 10 parts by weight of basalt fiber are placed in a roasting furnace, roasted for 2 hours at 230 ℃, then placed in a ball milling tank, 3 parts of diatomite and 4 parts of cassava powder are added, deionized water is added, ball milling is carried out for 30 minutes at 70 ℃, then 5 parts of polyacrylic acid emulsion with the solid content of 30% are added, ball milling is continued for 20 minutes, and freeze drying is carried out, so that the modified basalt fiber is obtained.
Further, the modifying solution is prepared from the following raw materials in parts by weight: glucuronolactone 5, acetaminophen 3, polyvinyl alcohol 3 and deionized water 50.
Further, the spraying amount of the modifying liquid is 15% of the total weight of the wood powder.
Example 2
The high-performance fiberboard is formed by sequentially adhering and pressing an upper surface layer, a middle layer and a lower surface layer from top to bottom through an adhesive, wherein the upper surface layer and the lower surface layer are solid wood sheets, the middle layer is modified filler particles, and the modified filler particles are prepared from the following raw materials in parts by weight: 50 parts of modified wood powder, 15 parts of modified basalt fiber, 7 parts of polymethacrylate powder, 5 parts of polytetrafluoroethylene powder, 15 parts of polyethylene powder and 5 parts of alumina.
Further, the preparation method of the modified filler particles comprises the following steps: and (2) putting the modified wood powder and the modified basalt fiber into a stirrer, mixing for 25min at the speed of 250rpm, adding polymethacrylate powder, polytetrafluoroethylene powder, polyethylene powder and aluminum oxide into the stirrer, continuously mixing and heating to 94 ℃, stirring for 35min, granulating and cooling to obtain modified filler particles.
Further, the preparation method of the modified wood powder comprises the following steps: taking 15 parts by weight of camphor wood powder, 15 parts by weight of birch wood powder and 18 parts by weight of maple wood powder, sieving the materials with a sieve of 150 mu m, then placing the materials into an oven, baking the materials for 50min at 35 ℃, taking out the obtained materials, then uniformly spraying a modification liquid, then placing the materials back into the oven, heating the materials to 55 ℃ at the speed of 3 ℃/min, continuing to bake the materials for 70min, then taking out the materials, spraying the modification liquid again, placing the materials back, heating the materials to 95 ℃ at the speed of 2 ℃/min, baking the materials for 35min, cooling the materials to room temperature at the speed of 4 ℃/min, and placing the materials for 8h to obtain the modified.
Further, the preparation method of the modified basalt fiber comprises the following steps: 15 parts by weight of basalt fiber are placed in a roasting furnace, roasted for 3 hours at 235 ℃, then placed in a ball milling tank, 5 parts of diatomite and 7 parts of cassava powder are added, deionized water is added, ball milling is carried out for 35 minutes at 80 ℃, then 7 parts of polyacrylic acid emulsion with solid content of 32% is added, ball milling is continued for 25 minutes, and freeze drying is carried out to obtain the modified basalt fiber.
Further, the modifying solution is prepared from the following raw materials in parts by weight: glucuronolactone 7, acetaminophen 4, polyvinyl alcohol 5 and deionized water 80.
Further, the spraying amount of the modifying liquid is 18 percent of the total weight of the wood powder.
Example 3
The high-performance fiberboard is formed by sequentially adhering and pressing an upper surface layer, a middle layer and a lower surface layer from top to bottom through an adhesive, wherein the upper surface layer and the lower surface layer are solid wood sheets, the middle layer is modified filler particles, and the modified filler particles are prepared from the following raw materials in parts by weight: 60 parts of modified wood powder, 20 parts of modified basalt fiber, 10 parts of polymethacrylate powder, 6 parts of polytetrafluoroethylene powder, 20 parts of polyethylene powder and 6 parts of alumina.
Further, the preparation method of the modified filler particles comprises the following steps: and (2) putting the modified wood powder and the modified basalt fiber into a stirrer, mixing for 30min at the speed of 300rpm, adding polymethacrylate powder, polytetrafluoroethylene powder, polyethylene powder and aluminum oxide into the stirrer, continuously mixing and heating to 95 ℃, stirring for 40min, granulating and cooling to obtain the modified filler particles.
Further, the preparation method of the modified wood powder comprises the following steps: taking 20 parts by weight of camphor wood powder, 20 parts by weight of birch wood powder and 20 parts by weight of maple wood powder, sieving the materials with a 200-micron sieve, then placing the materials into an oven, baking the materials at 40 ℃ for 60min, taking out the obtained materials, then uniformly spraying a modification liquid, then placing the materials back into the oven, heating the materials to 60 ℃ at the speed of 3 ℃/min, continuing to bake the materials for 80min, then taking out the materials, spraying the modification liquid again, placing the materials back, heating the materials to 100 ℃ at the speed of 2 ℃/min, baking the materials for 40min, cooling the materials to room temperature at the speed of 5 ℃/min, and placing the materials for 10h to obtain the modified.
Further, the preparation method of the modified basalt fiber comprises the following steps: 20 parts by weight of basalt fiber are placed in a roasting furnace, roasted for 3 hours at 240 ℃, then placed in a ball milling tank, 6 parts of diatomite and 8 parts of cassava powder are added, deionized water is added, ball milling is carried out for 40 minutes at 90 ℃, 10 parts of polyacrylic acid emulsion with the solid content of 35% is added, ball milling is continued for 30 minutes, and freeze drying is carried out to obtain the modified basalt fiber.
Further, the modifying solution is prepared from the following raw materials in parts by weight: 10 parts of glucuronolactone, 5 parts of acetaminophen, 6 parts of polyvinyl alcohol and 100 parts of deionized water.
Further, the spraying amount of the modifying liquid is 20% of the total weight of the wood powder.
Comparative example 1
This comparative example compared to example 2, the process steps were identical except that the modified wood flour was replaced with untreated wood flour.
Comparative example 2
In this comparative example, compared with example 2, the method steps are the same except that the modified basalt fiber is replaced with untreated basalt fiber.
And (3) performance testing: the bending property detection is carried out according to the GB/T1449-2005 bending property test method for fiber reinforced plastics, and the impact toughness detection is carried out according to the GB/T1451-2005 simple beam type impact toughness test method for fiber reinforced plastics; the results are shown in table 1:
TABLE 1
Figure 334423DEST_PATH_IMAGE002
As can be seen from Table 1, the sheet prepared by the invention has excellent bending property and impact resistance and good mechanical property.

Claims (3)

1. The high-performance fiberboard is characterized by being formed by sequentially adhering and pressing an upper surface layer, a middle layer and a lower surface layer from top to bottom through an adhesive, wherein the upper surface layer and the lower surface layer are solid wood sheets, the middle layer is modified filler particles, and the modified filler particles are prepared from the following raw materials in parts by weight: 40-60 parts of modified wood powder, 10-20 parts of modified basalt fiber, 5-10 parts of polymethacrylate powder, 4-6 parts of polytetrafluoroethylene powder, 10-20 parts of polyethylene powder and 3-6 parts of aluminum oxide;
the preparation method of the modified wood powder comprises the following steps: taking 10-20 parts by weight of camphor wood powder, 10-20 parts by weight of birch wood powder and 15-20 parts by weight of maple wood powder, sieving the materials with a sieve of 100 microns and 200 microns, then putting the materials into an oven, baking the materials for 40-60min at 30-40 ℃, taking out the obtained products, uniformly spraying a modification liquid, putting the obtained products back into the oven, heating the obtained products to 50-60 ℃ at the speed of 2-3 ℃/min, continuously baking the obtained products for 60-80min, taking out the obtained products, spraying the modification liquid again, putting the obtained products back into the oven, heating the obtained products to 90-100 ℃ at the speed of 1-2 ℃/min, baking the obtained products for 30-40min, cooling the obtained products to room temperature at the speed of 3-5 ℃/min, and standing the obtained products for 5-10 hours; the modified liquid is prepared from the following raw materials in parts by weight: 5-10 parts of glucuronolactone, 3-5 parts of acetaminophen, 3-6 parts of polyvinyl alcohol and 50-100 parts of deionized water;
the preparation method of the modified basalt fiber comprises the following steps: 10-20 parts by weight of basalt fiber are placed into a roasting furnace, roasted for 2-3h at 230-240 ℃, then placed into a ball milling tank, added with 3-6 parts of diatomite and 4-8 parts of cassava powder, added with deionized water, ball milled for 30-40min at 70-90 ℃, added with 5-10 parts of polyacrylic emulsion with the solid content of 30-35%, and freeze dried after ball milling for 20-30min to obtain the modified basalt fiber.
2. The high-performance fiberboard of claim 1, wherein the modified filler particles are prepared by a method comprising: and (2) putting the modified wood powder and the modified basalt fiber into a stirrer, mixing for 20-30min at the speed of 200-300rpm, adding polymethacrylate powder, polytetrafluoroethylene powder, polyethylene powder and aluminum oxide, continuously mixing and heating to 93-95 ℃, then stirring for 30-40min, granulating, and cooling to obtain the modified filler particles.
3. The high-performance fiberboard of claim 1, wherein the spraying amount of the modifying solution is 15 to 20 percent of the total weight of the wood flour.
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CN110733091B (en) * 2019-10-17 2020-12-25 安徽惠明建材科技发展有限公司 Preparation method of flame-retardant wood-plastic wallboard
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