CN112223873A - Mechanical ecological plate and manufacturing process thereof - Google Patents

Mechanical ecological plate and manufacturing process thereof Download PDF

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Publication number
CN112223873A
CN112223873A CN202011108503.2A CN202011108503A CN112223873A CN 112223873 A CN112223873 A CN 112223873A CN 202011108503 A CN202011108503 A CN 202011108503A CN 112223873 A CN112223873 A CN 112223873A
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polyethylene glycol
mechanical
resin film
resin
urea
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CN202011108503.2A
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CN112223873B (en
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刘孝春
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Dalian Penghong Wood Group Co ltd
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Dalian Penghong Wood Group Co ltd
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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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • 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
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • 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
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/329—Polymers modified by chemical after-treatment with organic compounds
    • C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen
    • C08G65/33303—Polymers modified by chemical after-treatment with organic compounds containing nitrogen containing amino group
    • C08G65/33306—Polymers modified by chemical after-treatment with organic compounds containing nitrogen containing amino group acyclic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D21H17/51—Triazines, e.g. melamine
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2461/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08J2461/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08J2461/24—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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
    • C08J2471/02—Polyalkylene oxides

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a mechanical ecological plate and a manufacturing process thereof, relates to the technical field of ecological plates, and mainly aims to solve the problem of poor mechanical property of the existing ecological plate, the mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, the wood layer is connected with the base material through the resin film, the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material, and the resin film comprises the following raw materials: modified polyethylene glycol portion, urea-formaldehyde resin portion, high density polyethylene portion, low density polyethylene portion and anti-oxidant portion, the mechanics ecological plate that this application prepared uses pure wood board as the substrate, and green, environmental protection, health, through modifying polyethylene glycol, graft amino at polyethylene glycol tip, can effectively strengthen the reactivity of polyethylene glycol, and with urea-formaldehyde resin complex formulation, the reaction forms macromolecular network structure each other for the resin film has stable inner structure, has improved the mechanical properties of ecological plate.

Description

Mechanical ecological plate and manufacturing process thereof
Technical Field
The invention relates to the technical field of ecological plates, in particular to a mechanical ecological plate and a manufacturing process thereof.
Background
The ecological plate is divided into two concepts of narrow sense and broad sense. The melamine impregnated bond paper facing artificial board is a decorative board which is made by soaking paper with different colors or textures in resin adhesive of an ecological board, drying to a certain curing degree, paving the ecological board on the surface of a shaving board, a moisture-proof board, a medium-density fiberboard, a plywood, a blockboard or other hard fiberboard and hot-pressing. The ecological board in the narrow sense only refers to a melamine veneer with a base material used in the middle being spliced solid wood (such as malachite, fir, tung wood, poplar and the like), and is mainly used in the fields of furniture, cabinets, wardrobes, bathroom cabinets and the like.
The existing ecological plate has poor mechanical properties, particularly breaking strength and impact strength, and cannot meet higher and higher use requirements.
Disclosure of Invention
The invention aims to provide a mechanical ecological plate and a manufacturing process thereof, and aims to solve the problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, wherein the wood layer is connected with the base material through the resin film, and the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material;
wherein the resin film comprises the following raw materials in parts by weight: 10-16 parts of modified polyethylene glycol, 20-30 parts of urea-formaldehyde resin, 20-30 parts of high-density polyethylene, 25-45 parts of low-density polyethylene and 5-9 parts of antioxidant.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
in one alternative: the base material is a pure solid wood board.
In one alternative: the pure solid wood board is formed by connecting a plurality of pure solid wood board strips with the thickness of 11.5mm and the width of 50-55mm in a toothed manner, the thickness tolerance is within 0.1mm, the tooth forming depth of two ends of each pure solid wood board strip is more than or equal to 7mm, the solid wood board used for processing the pure solid wood board strips is naturally dried for 2-3 months, dried for 10-12 days by steam, the double-sided planed area is 100%, and four sides of each pure solid wood board are connected into fixed-size long edge strips with flat board surfaces and high strength by a board strip connecting machine.
In one alternative: the preparation method of the modified polyethylene glycol comprises the following steps: dropping polyethylene glycol into thionyl bromide under stirring, maintaining the temperature of the system at 2-4 ℃ in the dropping process, heating to 50-60 ℃, then dropping into anhydrous ether, leaching for 30-60 minutes under the action of microwave heating, filtering, washing, drying, dissolving the product in N, N-dimethylformamide, adding 3-amino-1, 2-propanediol, placing into a high-pressure reaction container, heating to 80-90 ℃ under a closed state, reacting for 2-3 hours under the pressure of 0.2-0.25MPa, and vacuum drying to obtain the modified polyethylene glycol.
In one alternative: the mass ratio of the polyethylene glycol, the thionyl bromide, the anhydrous ether, the N, N-dimethylformamide and the 3-amino-1, 2-propylene glycol is (1), (2-3): 4:4:0.5:0.3.
In one alternative: the wood layer is one or the combination of more than two of poplar veneer, dampproof board and fiberboard.
In one alternative: the preparation method of the impregnated bond paper comprises the following steps: paper with different colors or textures is soaked in a mixture of modified melamine resin and modified urea resin, and then the paper is dried and cured to obtain the paper.
In one alternative: the ratio of the modified melamine resin to the modified urea-formaldehyde resin is (1-2) to 1.
In one alternative: the modified melamine resin is prepared by adding poly (butylene succinate) into common melamine resin, and reacting at 50-60 deg.C for 0.5-1 h.
In one alternative: the modified urea-formaldehyde resin is prepared by mixing common urea-formaldehyde resin, 5-10% formaldehyde solution and polyvinyl alcohol according to the weight ratio of 3: (0.5-1): (1-2), heating to 60-70 ℃, adjusting the pH value to 7.5-7.8, and reacting for 0.5-1h to obtain the modified urea-formaldehyde resin.
The manufacturing process of the mechanical ecological plate comprises the following steps:
1) weighing the raw materials according to the proportion;
2) fully stirring and uniformly mixing modified polyethylene glycol, urea-formaldehyde resin, high-density polyethylene, low-density polyethylene and an antioxidant, adding the mixture into a film extruder, plasticizing the mixture, then extruding the plasticized mixture in a co-extrusion die head to obtain a film bubble, drawing the film bubble by a traction device, and carrying out secondary water cooling molding to obtain a resin film, wherein preferably, before adding the resin film into the film extruder, the uniformly mixed raw material mixture is irradiated by ultraviolet light with a wavelength of 365nm for 5-15min, and the irradiation light intensity is 5-10mW/cm2；
3) Covering a resin film on the surface of the substrate, and covering the wood layer on the resin film; bonding the wood layer with the substrate through the resin film by means of hot pressing; and attaching the impregnated bond paper to the side of the wood layer away from the base material to obtain the required mechanical ecological plate.
In one alternative: in the step 2), the temperature of the first water cooling is 10-20 ℃, and the temperature of the second water cooling is 20-25 ℃.
Compared with the prior art, the invention has the following beneficial effects:
the utility model provides a mechanics ecological plate to pure solid board is the substrate, and green, the environmental protection is healthy, through modifying polyethylene glycol, at polyethylene glycol tip grafting amino, can effectively strengthen the reactivity of polyethylene glycol, and is compound with urea-formaldehyde resin, and the reaction forms macromolecular network column structure each other for the resin film has stable inner structure, has improved ecological plate's mechanical properties.
Detailed Description
The present invention will be described in detail with reference to the following examples, which are provided for illustrative purposes only and are not intended to limit the scope of the present invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
The utility model provides a mechanics ecological plate to pure solid board is the substrate, and green, the environmental protection is healthy, through modifying polyethylene glycol, at polyethylene glycol tip grafting amino, can effectively strengthen the reactivity of polyethylene glycol, and is compound with urea-formaldehyde resin, and the reaction forms macromolecular network column structure each other for the resin film has stable inner structure, has improved ecological plate's mechanical properties.
Example 1
A mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, wherein the wood layer is connected with the base material through the resin film, and the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material;
wherein the resin film comprises the following raw materials in parts by weight: 10 parts of modified polyethylene glycol, 20 parts of urea-formaldehyde resin, 20 parts of high-density polyethylene, 25 parts of low-density polyethylene and 5 parts of antioxidant;
the base material is a pure solid wood board, the pure solid wood board is formed by connecting a plurality of pure solid wood board strips with the thickness of 11.5mm and the width of 55mm in a toothed manner, the thickness tolerance is within 0.1mm, the teeth are formed at two ends of each pure solid wood board strip with the depth of 8mm, the solid wood board strips used for processing the pure solid wood board strips are naturally dried for 3 months, the steam drying is carried out for 12 days, the double-sided planed area is 100%, and four sides of each pure solid wood board are connected into fixed-size long edge strips with flat board surfaces and high strength by a board strip connecting machine;
the preparation method of the modified polyethylene glycol comprises the following steps: dropping polyethylene glycol into thionyl bromide under a stirring state, maintaining the system temperature at 2 ℃ in the dropping process, heating to 50 ℃, then dropping into anhydrous ether, leaching for 30 minutes under the action of microwave heating, filtering, washing, drying, dissolving a product into N, N-dimethylformamide, adding 3-amino-1, 2-propylene glycol, placing into a high-pressure reaction container, heating to 80 ℃ under a closed state, reacting for 2 hours under the pressure of 0.2MPa, and drying under vacuum to obtain modified polyethylene glycol, wherein the mass ratio of the polyethylene glycol to the thionyl bromide to the anhydrous ether to the N, N-dimethylformamide to the 3-amino-1, 2-propylene glycol is 1: 2: 4:4:0.5:0.3, the polyethylene glycol is modified, amino groups are grafted on the end part of the polyethylene glycol, the reactivity of the polyethylene glycol can be effectively enhanced, the polyethylene glycol is compounded with urea resin and reacts with the urea resin to form a macromolecular network structure, and the resin film has a stable internal structure, so that the mechanical property of the ecological plate is further improved;
the wood layer is a poplar veneer;
the preparation method of the impregnated bond paper comprises the following steps: paper with different colors or textures is placed into a mixture of modified melamine resin and modified urea resin for soaking, and then drying and curing are carried out to obtain the paper, wherein the ratio of the modified melamine resin to the modified urea resin is 1: 1; the modified melamine resin is prepared by adding poly (butylene succinate) into common melamine resin, and reacting at 52 ℃ for 0.5h, wherein the modified urea resin is prepared by mixing common urea resin, 5% formaldehyde solution and polyvinyl alcohol according to the weight ratio of 3: 0.5: 1, heating to 60 ℃, then adjusting the pH value to 7.5 and reacting for 0.5h to obtain the modified urea-formaldehyde resin; the melamine resin and the poly (butylene succinate) are polymerized to form a firm internal chemical structure, so that the mechanical property is improved, and polyvinyl formal is generated by the reaction of polyvinyl alcohol and formaldehyde under an acidic condition, so that the structure of the urea-formaldehyde resin is improved, and the initial viscosity of the urea-formaldehyde resin is improved; meanwhile, the melamine has a ring structure and six active groups, so that the cross-linking of the urea resin is promoted, a three-dimensional network structure is formed, a plurality of water-absorbing groups are sealed, and the water resistance and the mechanical property are improved;
the manufacturing process of the mechanical ecological plate in the embodiment comprises the following steps:
1) weighing the raw materials according to the proportion;
2) fully stirring and uniformly mixing modified polyethylene glycol, urea-formaldehyde resin, high-density polyethylene, low-density polyethylene and an antioxidant, adding the mixture into a film extruder, plasticizing the mixture, then extruding the plasticized mixture in a co-extrusion die head to obtain a film bubble, drawing the film bubble by a traction device, and carrying out secondary water cooling forming to obtain a resin film; wherein the temperature of the first water cooling is 10 ℃, and the temperature of the second water cooling is 20 ℃; further, it is preferable that the raw material mixture after being uniformly mixed is irradiated with ultraviolet light having a wavelength of 365nm for 5min before being fed into the film extruder, and the intensity of the irradiated light is 5mW/cm2The ultraviolet light is used for irradiation, which is beneficial to the addition polymerization of free radicals in all raw materials and improves the mechanical property of the resin film;
3) covering a resin film on the surface of the substrate, and covering the wood layer on the resin film; bonding the wood layer with the substrate through the resin film by means of hot pressing; and attaching the impregnated bond paper to the side of the wood layer away from the base material to obtain the required mechanical ecological plate.
Example 2
A mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, wherein the wood layer is connected with the base material through the resin film, and the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material;
wherein the resin film comprises the following raw materials in parts by weight: 11 parts of modified polyethylene glycol, 22 parts of urea-formaldehyde resin, 22 parts of high-density polyethylene, 30 parts of low-density polyethylene and 6 parts of antioxidant;
the base material is a pure solid wood board, the pure solid wood board is formed by connecting a plurality of pure solid wood board strips with the thickness of 11.5mm and the width of 55mm in a toothed manner, the thickness tolerance is within 0.1mm, the teeth are formed at two ends of each pure solid wood board strip with the depth of 8mm, the solid wood board strips used for processing the pure solid wood board strips are naturally dried for 3 months, the steam drying is carried out for 12 days, the double-sided planed area is 100%, and four sides of each pure solid wood board are connected into fixed-size long edge strips with flat board surfaces and high strength by a board strip connecting machine;
the preparation method of the modified polyethylene glycol comprises the following steps: dropping polyethylene glycol into thionyl bromide under a stirring state, maintaining the system temperature at 2 ℃ in the dropping process, heating to 52 ℃, then dropping into anhydrous ether, leaching for 40 minutes under the action of microwave heating, filtering, washing, drying, dissolving a product in N, N-dimethylformamide, adding 3-amino-1, 2-propylene glycol, placing into a high-pressure reaction container, heating to 82 ℃ under a closed state, reacting for 2.2 hours under the pressure of 0.21MPa, and drying under vacuum to obtain modified polyethylene glycol, wherein the mass ratio of the polyethylene glycol to the thionyl bromide to the anhydrous ether to the N, N-dimethylformamide to the 3-amino-1, 2-propylene glycol is 1: 2.2: 4:4:0.5:0.3, the polyethylene glycol is modified, amino groups are grafted on the end part of the polyethylene glycol, the reactivity of the polyethylene glycol can be effectively enhanced, the polyethylene glycol is compounded with urea resin and reacts with the urea resin to form a macromolecular network structure, and the resin film has a stable internal structure, so that the mechanical property of the ecological plate is further improved;
the wood layer is a fiberboard;
the preparation method of the impregnated bond paper comprises the following steps: paper with different colors or textures is placed into a mixture of modified melamine resin and modified urea-formaldehyde resin for soaking, and then drying and curing are carried out to obtain the paper, wherein the ratio of the modified melamine resin to the modified urea-formaldehyde resin is 1.2: 1; the modified melamine resin is prepared by adding poly (butylene succinate) into common melamine resin, and reacting at 52 ℃ for 0.6h to obtain the modified melamine resin, wherein the modified urea resin is prepared by mixing common urea resin, 6% formaldehyde solution and polyvinyl alcohol according to the weight ratio of 3: 0.6: 1.2, heating to 62 ℃, adjusting the pH value to 7.6, and reacting for 0.6h to obtain the modified urea-formaldehyde resin; the melamine resin and the poly (butylene succinate) are polymerized to form a firm internal chemical structure, so that the mechanical property is improved, and polyvinyl formal is generated by the reaction of polyvinyl alcohol and formaldehyde under an acidic condition, so that the structure of the urea-formaldehyde resin is improved, and the initial viscosity of the urea-formaldehyde resin is improved; meanwhile, the melamine has a ring structure and six active groups, so that the cross-linking of the urea resin is promoted, a three-dimensional network structure is formed, a plurality of water-absorbing groups are sealed, and the water resistance and the mechanical property are improved;
the manufacturing process of the mechanical ecological plate in the embodiment comprises the following steps:
1) weighing the raw materials according to the proportion;
2) fully stirring and uniformly mixing modified polyethylene glycol, urea-formaldehyde resin, high-density polyethylene, low-density polyethylene and an antioxidant, adding the mixture into a film extruder, plasticizing the mixture, then extruding the plasticized mixture in a co-extrusion die head to obtain a film bubble, drawing the film bubble by a traction device, and carrying out secondary water cooling forming to obtain a resin film; wherein the temperature of the first water cooling is 12 deg.C, the temperature of the second water cooling is 21 deg.C, and further, preferably before adding into the film extruder, irradiating the uniformly mixed raw material mixture with 365nm wavelength ultraviolet light for 8min to obtain irradiation light intensity of 6mW/cm2The ultraviolet light is used for irradiation, which is beneficial to the addition polymerization of free radicals in all raw materials and improves the mechanical property of the resin film;
3) covering a resin film on the surface of the substrate, and covering the wood layer on the resin film; bonding the wood layer with the substrate through the resin film by means of hot pressing; and attaching the impregnated bond paper to the side of the wood layer away from the base material to obtain the required mechanical ecological plate.
Example 3
A mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, wherein the wood layer is connected with the base material through the resin film, and the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material;
wherein the resin film comprises the following raw materials in parts by weight: 13 parts of modified polyethylene glycol, 25 parts of urea-formaldehyde resin, 25 parts of high-density polyethylene, 35 parts of low-density polyethylene and 7 parts of antioxidant;
the base material is a pure solid wood board, the pure solid wood board is formed by connecting a plurality of pure solid wood board strips with the thickness of 11.5mm and the width of 55mm in a toothed manner, the thickness tolerance is within 0.1mm, the teeth are formed at two ends of each pure solid wood board strip with the depth of 8mm, the solid wood board strips used for processing the pure solid wood board strips are naturally dried for 3 months, the steam drying is carried out for 12 days, the double-sided planed area is 100%, and four sides of each pure solid wood board are connected into fixed-size long edge strips with flat board surfaces and high strength by a board strip connecting machine;
the preparation method of the modified polyethylene glycol comprises the following steps: dropping polyethylene glycol into thionyl bromide under a stirring state, maintaining the system temperature at 3 ℃ in the dropping process, heating to 55 ℃, then dropping into anhydrous ether, leaching for 45 minutes under the action of microwave heating, filtering, washing, drying, dissolving a product into N, N-dimethylformamide, adding 3-amino-1, 2-propylene glycol, placing into a high-pressure reaction container, heating to 85 ℃ under a closed state, reacting for 2.5 hours under the pressure of 0.225MPa, and drying under vacuum to obtain modified polyethylene glycol, wherein the mass ratio of the polyethylene glycol to the thionyl bromide to the anhydrous ether to the N, N-dimethylformamide to the 3-amino-1, 2-propylene glycol is 1: 2.5: 4:4:0.5:0.3, the polyethylene glycol is modified, amino groups are grafted on the end part of the polyethylene glycol, the reactivity of the polyethylene glycol can be effectively enhanced, the polyethylene glycol is compounded with urea resin and reacts with the urea resin to form a macromolecular network structure, and the resin film has a stable internal structure, so that the mechanical property of the ecological plate is further improved;
the wood layer is a poplar veneer and a fiberboard;
the preparation method of the impregnated bond paper comprises the following steps: paper with different colors or textures is placed into a mixture of modified melamine resin and modified urea-formaldehyde resin for soaking, and then drying and curing are carried out to obtain the paper, wherein the ratio of the modified melamine resin to the modified urea-formaldehyde resin is 1.5: 1; the modified melamine resin is prepared by adding poly (butylene succinate) into common melamine resin, and reacting at 55 ℃ for 0.8h to obtain the modified melamine resin, wherein the modified urea resin is prepared by mixing common urea resin, 8% formaldehyde solution and polyvinyl alcohol according to the weight ratio of 3: 0.7: 1.5, heating to 65 ℃, then adjusting the pH value to 7.7 and reacting for 0.8h to obtain the modified urea-formaldehyde resin; the melamine resin and the poly (butylene succinate) are polymerized to form a firm internal chemical structure, so that the mechanical property is improved, and polyvinyl formal is generated by the reaction of polyvinyl alcohol and formaldehyde under an acidic condition, so that the structure of the urea-formaldehyde resin is improved, and the initial viscosity of the urea-formaldehyde resin is improved; meanwhile, the melamine has a ring structure and six active groups, so that the cross-linking of the urea resin is promoted, a three-dimensional network structure is formed, a plurality of water-absorbing groups are sealed, and the water resistance and the mechanical property are improved;
the manufacturing process of the mechanical ecological plate in the embodiment comprises the following steps:
1) weighing the raw materials according to the proportion;
2) fully stirring and uniformly mixing modified polyethylene glycol, urea-formaldehyde resin, high-density polyethylene, low-density polyethylene and an antioxidant, adding the mixture into a film extruder, plasticizing the mixture, then extruding the plasticized mixture in a co-extrusion die head to obtain a film bubble, drawing the film bubble by a traction device, and carrying out secondary water cooling forming to obtain a resin film; wherein the temperature of the first water cooling is 15 deg.C, the temperature of the second water cooling is 23 deg.C, and further, preferably before adding into the film extruder, irradiating the uniformly mixed raw material mixture with 365nm ultraviolet light for 10min to obtain an irradiation light intensity of 8mW/cm2The ultraviolet light is used for irradiation, which is beneficial to the addition polymerization of free radicals in all raw materials and improves the mechanical property of the resin film;
3) covering a resin film on the surface of the substrate, and covering the wood layer on the resin film; bonding the wood layer with the substrate through the resin film by means of hot pressing; and attaching the impregnated bond paper to the side of the wood layer away from the base material to obtain the required mechanical ecological plate.
Example 4
A mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, wherein the wood layer is connected with the base material through the resin film, and the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material;
wherein the resin film comprises the following raw materials in parts by weight: 14 parts of modified polyethylene glycol, 28 parts of urea-formaldehyde resin, 28 parts of high-density polyethylene, 40 parts of low-density polyethylene and 8 parts of antioxidant;
the base material is a pure solid wood board, the pure solid wood board is formed by connecting a plurality of pure solid wood board strips with the thickness of 11.5mm and the width of 55mm in a toothed manner, the thickness tolerance is within 0.1mm, the teeth are formed at two ends of each pure solid wood board strip with the depth of 8mm, the solid wood board strips used for processing the pure solid wood board strips are naturally dried for 3 months, the steam drying is carried out for 12 days, the double-sided planed area is 100%, and four sides of each pure solid wood board are connected into fixed-size long edge strips with flat board surfaces and high strength by a board strip connecting machine;
the preparation method of the modified polyethylene glycol comprises the following steps: dropping polyethylene glycol into thionyl bromide under a stirring state, maintaining the system temperature at 4 ℃ in the dropping process, heating to 58 ℃, then dropping into anhydrous ether, leaching for 50 minutes under the action of microwave heating, filtering, washing, drying, dissolving a product into N, N-dimethylformamide, adding 3-amino-1, 2-propylene glycol, placing into a high-pressure reaction container, heating to 88 ℃ under a closed state, reacting for 2.8 hours under the pressure of 0.24MPa, and drying under vacuum to obtain modified polyethylene glycol, wherein the mass ratio of the polyethylene glycol to the thionyl bromide to the anhydrous ether to the N, N-dimethylformamide to the 3-amino-1, 2-propylene glycol is 1: 2.7: 4:4:0.5:0.3, the polyethylene glycol is modified, amino groups are grafted on the end part of the polyethylene glycol, the reactivity of the polyethylene glycol can be effectively enhanced, the polyethylene glycol is compounded with urea resin and reacts with the urea resin to form a macromolecular network structure, and the resin film has a stable internal structure, so that the mechanical property of the ecological plate is further improved;
the wood layer is a moisture-proof plate;
the preparation method of the impregnated bond paper comprises the following steps: paper with different colors or textures is placed into a mixture of modified melamine resin and modified urea-formaldehyde resin for soaking, and then drying and curing are carried out to obtain the paper, wherein the ratio of the modified melamine resin to the modified urea-formaldehyde resin is 1.8: 1; the modified melamine resin is prepared by adding poly (butylene succinate) into common melamine resin, and reacting at 58 ℃ for 0.9h, wherein the modified urea resin is prepared by mixing common urea resin, 9% formaldehyde solution and polyvinyl alcohol according to the weight ratio of 3: 0.9: 1.8, heating to 68 ℃, adjusting the pH value to 7.8, and reacting for 1h to obtain the modified urea-formaldehyde resin; the melamine resin and the poly (butylene succinate) are polymerized to form a firm internal chemical structure, so that the mechanical property is improved, and polyvinyl formal is generated by the reaction of polyvinyl alcohol and formaldehyde under an acidic condition, so that the structure of the urea-formaldehyde resin is improved, and the initial viscosity of the urea-formaldehyde resin is improved; meanwhile, the melamine has a ring structure and six active groups, so that the cross-linking of the urea resin is promoted, a three-dimensional network structure is formed, a plurality of water-absorbing groups are sealed, and the water resistance and the mechanical property are improved;
the manufacturing process of the mechanical ecological plate in the embodiment comprises the following steps:
1) weighing the raw materials according to the proportion;
2) fully stirring and uniformly mixing modified polyethylene glycol, urea-formaldehyde resin, high-density polyethylene, low-density polyethylene and an antioxidant, adding the mixture into a film extruder, plasticizing the mixture, then extruding the plasticized mixture in a co-extrusion die head to obtain a film bubble, drawing the film bubble by a traction device, and carrying out secondary water cooling forming to obtain a resin film; wherein the temperature of the first water cooling is 18 deg.C, the temperature of the second water cooling is 24 deg.C, and further, preferably before adding into the film extruder, irradiating the uniformly mixed raw material mixture with 365nm wavelength ultraviolet light for 12min to obtain irradiation light intensity of 9mW/cm2The ultraviolet light is used for irradiation, which is beneficial to the addition polymerization of free radicals in all raw materials and improves the mechanical property of the resin film;
3) covering a resin film on the surface of the substrate, and covering the wood layer on the resin film; bonding the wood layer with the substrate through the resin film by means of hot pressing; and attaching the impregnated bond paper to the side of the wood layer away from the base material to obtain the required mechanical ecological plate.
Example 5
A mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, wherein the wood layer is connected with the base material through the resin film, and the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material;
wherein the resin film comprises the following raw materials in parts by weight: 16 parts of modified polyethylene glycol, 30 parts of urea-formaldehyde resin, 30 parts of high-density polyethylene, 45 parts of low-density polyethylene and 9 parts of antioxidant;
the base material is a pure solid wood board, the pure solid wood board is formed by connecting a plurality of pure solid wood board strips with the thickness of 11.5mm and the width of 55mm in a toothed manner, the thickness tolerance is within 0.1mm, the teeth are formed at two ends of each pure solid wood board strip with the depth of 8mm, the solid wood board strips used for processing the pure solid wood board strips are naturally dried for 3 months, the steam drying is carried out for 12 days, the double-sided planed area is 100%, and four sides of each pure solid wood board are connected into fixed-size long edge strips with flat board surfaces and high strength by a board strip connecting machine;
the preparation method of the modified polyethylene glycol comprises the following steps: dropping polyethylene glycol into thionyl bromide under a stirring state, maintaining the system temperature at 4 ℃ in the dropping process, heating to 60 ℃, then dropping into anhydrous ether, leaching for 60 minutes under the action of microwave heating, filtering, washing, drying, dissolving a product in N, N-dimethylformamide, adding 3-amino-1, 2-propylene glycol, placing in a high-pressure reaction container, heating to 90 ℃ under a closed state, reacting for 3 hours under the pressure of 0.25MPa, and drying under vacuum to obtain modified polyethylene glycol, wherein the mass ratio of the polyethylene glycol to the thionyl bromide to the anhydrous ether to the N, N-dimethylformamide to the 3-amino-1, 2-propylene glycol is 1: 3: 4:4:0.5:0.3, the polyethylene glycol is modified, amino groups are grafted on the end part of the polyethylene glycol, the reactivity of the polyethylene glycol can be effectively enhanced, the polyethylene glycol is compounded with urea resin and reacts with the urea resin to form a macromolecular network structure, and the resin film has a stable internal structure, so that the mechanical property of the ecological plate is further improved;
the wood layer is a poplar veneer;
the preparation method of the impregnated bond paper comprises the following steps: paper with different colors or textures is placed into a mixture of modified melamine resin and modified urea resin for soaking, and then drying and curing are carried out to obtain the paper, wherein the ratio of the modified melamine resin to the modified urea resin is 2: 1; the modified melamine resin is prepared by adding poly (butylene succinate) into common melamine resin, and reacting at 60 ℃ for 1h to obtain the modified melamine resin, wherein the modified urea resin is prepared by mixing common urea resin, 10% formaldehyde solution and polyvinyl alcohol according to the weight ratio of 3: 1:2, heating to 70 ℃, adjusting the pH value to 7.8, and reacting for 1 hour to obtain the modified urea-formaldehyde resin; the melamine resin and the poly (butylene succinate) are polymerized to form a firm internal chemical structure, so that the mechanical property is improved, and polyvinyl formal is generated by the reaction of polyvinyl alcohol and formaldehyde under an acidic condition, so that the structure of the urea-formaldehyde resin is improved, and the initial viscosity of the urea-formaldehyde resin is improved; meanwhile, the melamine has a ring structure and six active groups, so that the cross-linking of the urea resin is promoted, a three-dimensional network structure is formed, a plurality of water-absorbing groups are sealed, and the water resistance and the mechanical property are improved;
the manufacturing process of the mechanical ecological plate in the embodiment comprises the following steps:
1) weighing the raw materials according to the proportion;
2) fully stirring and uniformly mixing modified polyethylene glycol, urea-formaldehyde resin, high-density polyethylene, low-density polyethylene and an antioxidant, adding the mixture into a film extruder, plasticizing the mixture, then extruding the plasticized mixture in a co-extrusion die head to obtain a film bubble, drawing the film bubble by a traction device, and carrying out secondary water cooling forming to obtain a resin film; wherein the temperature of the first water cooling is 20 ℃, the temperature of the second water cooling is 25 ℃, and further, preferably before the raw materials are added into the film extruder, the uniformly mixed raw material mixture is irradiated for 15min by ultraviolet light with the wavelength of 365nm, the light intensity of the irradiation light is 10mW/cm2, and the irradiation is carried out by the ultraviolet light, so that the addition polymerization of free radicals in the raw materials is facilitated, and the mechanical property of the resin film is improved;
3) covering a resin film on the surface of the substrate, and covering the wood layer on the resin film; bonding the wood layer with the substrate through the resin film by means of hot pressing; and attaching the impregnated bond paper to the side of the wood layer away from the base material to obtain the required mechanical ecological plate.
Test one:
the performance tests of the flexural strength and the impact strength of the ecological plates of the above examples 1 to 5 were carried out, the test standards are in accordance with the existing national standards, and the specific results are shown in table 1 below:
experimental groups Breaking strength (Mpa) Impact strength (J/m)2)
Example 1 59 11.2
Example 2 60 11.3
Example 3 61 11.5
Example 4 59 11.1
Example 5 59 11
Existing ecological plate 41 8.8
As is apparent from table 1 above, the flexural strength and the impact strength of the ecological plates obtained in examples 1 to 5 of the present invention are significantly superior to those of the existing ecological plates, and the ecological plates of the present invention have excellent mechanical properties;
test No. two
Comparative example 1
On the basis of example 3, the unmodified polyethylene glycol component is used for replacing the modified polyethylene glycol;
comparative example 2
On the basis of the embodiment 3, the impregnated bond paper obtained by soaking the mixture of the modified melamine resin and the modified urea resin is replaced by the impregnated bond paper obtained by soaking the common melamine resin;
comparative example 3
On the basis of the embodiment 3, the impregnated bond paper obtained by soaking the common urea-formaldehyde resin is adopted to replace the impregnated bond paper obtained by soaking the mixture of the modified melamine resin and the modified urea-formaldehyde resin;
comparative example 4
On the basis of the embodiment 3, the impregnated bond paper obtained by soaking the modified melamine resin is adopted to replace the impregnated bond paper obtained by soaking the mixture of the modified melamine resin and the modified urea resin;
comparative example 5
On the basis of the embodiment 3, the impregnated bond paper obtained by soaking the modified urea-formaldehyde resin is adopted to replace the impregnated bond paper obtained by soaking the mixture of the modified melamine resin and the modified urea-formaldehyde resin;
comparative example 6
On the basis of the embodiment 3, in the step 2) of the preparation process, before the raw materials are added into the film layer extruder, ultraviolet irradiation is not carried out on the uniformly mixed raw material mixture;
the test results are shown in table 2 below:
Figure BDA0002727767730000121
Figure BDA0002727767730000131
as can be seen from the above table, the reaction activity of the polyethylene glycol can be effectively enhanced by modifying the polyethylene glycol and grafting the amino group at the end of the polyethylene glycol, and the polyethylene glycol is compounded with the urea-formaldehyde resin and reacts with the urea-formaldehyde resin to form a macromolecular network structure, so that the resin film has a stable internal structure, the mechanical property of the ecological plate is improved, the impregnated film paper obtained by soaking the mixture of the modified melamine resin and the modified urea-formaldehyde resin can further improve the mechanical property, and the mechanical property can be further improved by ultraviolet irradiation.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (8)

1. The mechanical ecological plate comprises a base material, a resin film, a wood layer and impregnated bond paper, wherein the wood layer is connected with the base material through the resin film, and the impregnated bond paper is arranged on one surface of the wood layer, which is far away from the base material, and is characterized in that the resin film comprises the following raw materials in parts by weight: 10-16 parts of modified polyethylene glycol, 20-30 parts of urea-formaldehyde resin, 20-30 parts of high-density polyethylene, 25-45 parts of low-density polyethylene and 5-9 parts of antioxidant.
2. The mechanical ecological plate according to claim 1, wherein the base material is a pure solid wood plate.
3. The mechanical ecological plate according to claim 2, wherein the pure solid wood plate is formed by connecting a plurality of pure solid wood plate strips with the thickness of 11.5mm and the width of 50-55mm in a toothed manner, the thickness tolerance is within 0.1mm, the tooth punching depth at two ends of each pure solid wood plate strip is not less than 7mm, the solid wood plate used for processing the pure solid wood plate strips is naturally dried for 2-3 months, dried by steam for 10-12 days, and the double-sided planed area is 100%, and four sides of the pure solid wood plate are connected into fixed-size long edge strips with flat plate surfaces and high strength by a plate connecting machine.
4. The mechanical ecological plate according to claim 1, wherein the modified polyethylene glycol is prepared by the following steps: dropping polyethylene glycol into thionyl bromide under stirring, maintaining the temperature of the system at 2-4 ℃ in the dropping process, heating to 50-60 ℃, then dropping into anhydrous ether, leaching for 30-60 minutes under the action of microwave heating, filtering, washing, drying, dissolving the product in N, N-dimethylformamide, adding 3-amino-1, 2-propanediol, placing into a high-pressure reaction container, heating to 80-90 ℃ under a closed state, reacting for 2-3 hours under the pressure of 0.2-0.25MPa, and vacuum drying to obtain the modified polyethylene glycol.
5. The mechanical ecological plate according to claim 3, wherein the mass ratio of the polyethylene glycol, the sulfoxide bromide, the anhydrous ether, the N, N-dimethylformamide and the 3-amino-1, 2-propanediol is 1 (2-3): 4:4:0.5:0.3.
6. The mechanical ecological plate according to claim 1, wherein the wood layer is one or a combination of more than two of poplar veneer, moisture-proof plate and fiber plate.
7. The manufacturing process of the mechanical ecological plate according to any one of claims 1 to 6, characterized by comprising the following steps:
1) weighing the raw materials according to the proportion;
2) fully stirring and uniformly mixing modified polyethylene glycol, urea-formaldehyde resin, high-density polyethylene, low-density polyethylene and an antioxidant, adding the mixture into a film extruder, plasticizing the mixture, then extruding the plasticized mixture in a co-extrusion die head to obtain a film bubble, drawing the film bubble by a traction device, and carrying out secondary water cooling forming to obtain a resin film;
3) covering a resin film on the surface of the substrate, and covering the wood layer on the resin film; bonding the wood layer with the substrate through the resin film by means of hot pressing; and attaching the impregnated bond paper to the side of the wood layer away from the base material to obtain the required mechanical ecological plate.
8. The manufacturing process of the mechanical ecological plate according to claim 7, wherein the temperature of the first water cooling in the step 2) is 10-20 ℃, and the temperature of the second water cooling is 20-25 ℃.
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US6451444B1 (en) * 1998-03-20 2002-09-17 Schauman Wood Oy Wood based plate provided with surface and method to provide the surface
JP2006137147A (en) * 2004-11-15 2006-06-01 Eidai Co Ltd Manufacturing method of wooden board
CN201423693Y (en) * 2009-06-25 2010-03-17 浙江红杉木业有限公司 Toothing veneered solid wood painting-free board
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