CN110564173A - colorful wood-plastic profile and preparation method thereof - Google Patents

colorful wood-plastic profile and preparation method thereof Download PDF

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Publication number
CN110564173A
CN110564173A CN201910962568.4A CN201910962568A CN110564173A CN 110564173 A CN110564173 A CN 110564173A CN 201910962568 A CN201910962568 A CN 201910962568A CN 110564173 A CN110564173 A CN 110564173A
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CN
China
Prior art keywords
wood
plastic
parts
powder
colorful
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Pending
Application number
CN201910962568.4A
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Chinese (zh)
Inventor
李永乐
方晓钟
肖磊
王潇翔
丁浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Guofeng Wood Plastic Technology Co Ltd
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Anhui Guofeng Wood Plastic Technology Co Ltd
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Application filed by Anhui Guofeng Wood Plastic Technology Co Ltd filed Critical Anhui Guofeng Wood Plastic Technology Co Ltd
Priority to CN201910962568.4A priority Critical patent/CN110564173A/en
Publication of CN110564173A publication Critical patent/CN110564173A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B32B21/047—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 foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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    • 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
    • B32B5/18—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 of foamed material
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • 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
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    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
    • C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
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    • B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • C—CHEMISTRY; METALLURGY
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • 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
    • C08J2397/00—Characterised by the use of lignin-containing materials
    • C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2409/02—Copolymers with acrylonitrile
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2409/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
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    • C08J2423/06—Polyethene
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    • C08J2427/06—Homopolymers or copolymers of vinyl chloride

Abstract

The invention provides a colorful wood-plastic section, which is in a multilayer structure; each layer structure of the colorful wood-plastic sectional material comprises the following raw materials in parts by weight: 30-35 parts of etherified modified wood powder, 20-24 parts of polyvinyl chloride plastic particles, 5-10 parts of polyethylene color master batches, 8-10 parts of silicon-aluminum hollow spheres, 8-10 parts of reinforcing agents, 1-5 parts of foaming regulators, 0.5-0.8 part of foaming agents, 2-5 parts of processing aids, 3-6 parts of ultraviolet absorbers and 1-3 parts of antioxidants; wherein, the color of the polyethylene color master batch adopted by each layer structure is different. The invention also provides a preparation method of the colorful wood-plastic sectional material. The wood-plastic section bar is of a multilayer structure, and color master batches with different colors are added in each layer of structure; after the product is formed, various colorful patterns are formed on the surface of the section; in addition, the section bar also has better mechanical strength and high added value of products.

Description

colorful wood-plastic profile and preparation method thereof
Technical Field
the invention relates to the technical field of wood-plastic materials, in particular to a colorful wood-plastic profile and a preparation method thereof.
Background
The wood-plastic composite (WPC) is a novel composite material which is developed in recent years at home and abroad, and is a plate or a section produced by mixing thermoplastic plastics such as Polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) and Polystyrene (PS) with waste plant fibers such as wood flour, bamboo chips, rice hulls, wheat straws, soybean hulls, peanut shells, bagasse straws and the like, extruding, molding, injection molding and other plastic processing technologies.
however, the existing wood-plastic composite material has a single color, and the surface of the existing wood-plastic composite material usually has only one color, i.e., cannot form a color, which restricts the application and development of the wood-plastic composite material industry to a certain extent.
disclosure of Invention
The invention aims to solve the technical problem of providing a colorful wood-plastic section and a preparation method thereof.
the invention adopts the following technical scheme to solve the technical problems:
a colorful wood-plastic section bar, which is a multilayer structure; each layer structure of the colorful wood-plastic sectional material comprises the following raw materials in parts by weight: 30-35 parts of etherified modified wood powder, 20-24 parts of polyvinyl chloride plastic particles, 5-10 parts of polyethylene color master batches, 8-10 parts of silicon-aluminum hollow spheres, 8-10 parts of reinforcing agents, 1-5 parts of foaming regulators, 0.5-0.8 part of foaming agents, 2-5 parts of processing aids, 3-6 parts of ultraviolet absorbers and 1-3 parts of antioxidants; wherein, the color of the polyethylene color master batches adopted by each layer structure in the colorful wood-plastic section bar is different.
As one of the preferable modes of the invention, the etherified modified wood flour is prepared by modifying wood flour with an etherifying reagent; the etherification reagent is one or more of benzyl chloride, diethyl sulfate, ethyl bromide and acrylonitrile; and during wood powder modification, wood powder and the etherification reagent are subjected to etherification reaction in a sodium hydroxide solution to obtain the wood powder.
in a preferred embodiment of the present invention, the polyethylene color master batch is one of yellow polyethylene color master batch, orange polyethylene color master batch, black polyethylene color master batch, green polyethylene color master batch, blue polyethylene color master batch, red polyethylene color master batch, white polyethylene color master batch, and gray polyethylene color master batch; when the colorful wood-plastic section bar is used specifically, the polyethylene color master batches adopted by each layer of structure in the colorful wood-plastic section bar are different in color.
in a preferred embodiment of the present invention, the reinforcing agent is one or more of styrene, styrene-butadiene rubber, butadiene-acrylonitrile rubber and chlorinated polyethylene.
in a preferred mode of the invention, the foaming agent is one or more of ADC foaming agent, OBSH foaming agent and PTSS foaming agent, and the foaming regulator is PVC foaming regulator HL100 type.
As one of the preferable modes of the invention, the processing aid is one or more of PVC processing aids ACR-401 and PA-20.
In a preferred embodiment of the present invention, the ultraviolet absorber is a benzotriazole-based ultraviolet absorber.
in a preferred embodiment of the present invention, the antioxidant is a mixture of antioxidant 168 and antioxidant 1010.
As one preferable mode of the present invention, the multicolor wood-plastic section has a 3-6 layer structure.
in a preferred embodiment of the present invention, the thickness of each layer structure in the multi-color wood-plastic profile is specifically 0.4-0.6 mm.
The preparation method of the colorful wood-plastic section comprises the following steps:
(1) Preparing etherified modified wood powder:
Carrying out etherification reaction on wood powder and the etherification reagent in a sodium hydroxide solution to prepare etherified modified wood powder;
(2) preparing a surface layer structure of the colorful wood-plastic sectional material, namely a first layer structure:
Firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2-3h, then heating to 50-70 ℃, continuing stirring, keeping the temperature for 1-4h, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 160-165 ℃, the time is 15-20min, and the pressure is 0.15-0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170-180 ℃;
(3) preparing a second layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2-3h, then heating to 50-70 ℃, continuing stirring, keeping the temperature for 1-4h, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 160-165 ℃, the time is 15-20min, and the pressure is 0.15-0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170-180 ℃;
wherein, the color of the polyethylene color master batch in the second layer structure is different from that of the polyethylene color master batch in the first layer structure;
(4) preparing a third layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2-3h, then heating to 50-70 ℃, continuing stirring, keeping the temperature for 1-4h, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 160-165 ℃, the time is 15-20min, and the pressure is 0.15-0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170-180 ℃;
wherein, the color of the polyethylene color master batch in the third layer structure is different from the color of the polyethylene color master batch in the first layer structure and the second layer structure;
(5) Repeating the operations of the steps (2) to (4) until the number of prepared layers reaches the target requirement;
(6) Preparing a colorful wood-plastic section:
The layers of the structure prepared in the step are overlapped and co-extruded when the structure is hot and pass through a rectangular neck mold, the temperature of the neck mold is 185-200 ℃, and a rectangular flat plate with a multilayer structure is prepared after molding; and then, cooling, shaping and embossing the rectangular flat plate to obtain the multi-layer co-extrusion formed colorful wood-plastic sectional material.
in a preferred embodiment of the present invention, the multi-colored wood-plastic composite material has various uneven patterns and different colors formed on the surface thereof by an embossing process.
compared with the prior art, the invention has the advantages that:
(1) the wood-plastic section bar is of a multilayer structure, and color master batches with different colors are added in each layer of structure; combining the embossing process, after the product is formed, various uneven patterns are formed on the surface of the section, and the color is different, so that the product of the invention finally presents a colorful appearance and has stronger decoration;
(2) according to the invention, the etherified modified wood powder is adopted in the raw materials of each layer, so that the compatibility between fibers and plastics can be improved; the silicon-aluminum hollow spheres are added into the raw materials, so that the heat resistance of the wood-plastic section can be improved; polyethylene color master batches are selected from the raw materials and are matched with an ultraviolet absorber for use, so that the color of the section can be kept from fading; the wood-plastic section can perfectly present the designed color under the combined action of the components, and the color is bright and does not fade; in addition, as the raw materials of the invention are also added with reinforcing agents, processing aids and the like, the section bar of the invention can also keep better mechanical strength and further improve the added value of the product;
(3) According to the preparation method, wood powder is etherified and modified by an etherification reagent, hydroxyl hydrophilic groups in the wood are sealed to improve the hydrophobicity of the wood, and then an organic solvent is selected to be dissolved and uniformly mixed with thermoplastic polyvinyl chloride plastic particles to prepare etherified wood-plastic powder; the method ensures that the prepared wood-plastic powder has good compatibility.
Detailed Description
the following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
example 1
The colorful wood-plastic section bar is of a three-layer structure, and the thickness of each layer is 0.4 mm; each layer structure of the colorful wood-plastic sectional material comprises the following raw materials in parts by weight: 30 parts of etherified modified wood powder, 20 parts of polyvinyl chloride plastic particles, 5 parts of polyethylene color master batches, 8 parts of silicon-aluminum hollow spheres, 8 parts of styrene, 1 part of PVC foaming regulator HL100 model, 0.5 part of ADC foaming agent, 1 part of PVC processing aid ACR-4012 part, 3 parts of benzotriazole ultraviolet absorbent, and 1 part of mixture of antioxidant 168 and antioxidant 1010.
Further, the etherified modified wood flour is prepared by modifying wood flour with an etherifying reagent; the etherification reagent is benzyl chloride; and during wood powder modification, wood powder is subjected to etherification reaction with the etherification reagent in a sodium hydroxide solution to obtain the wood powder.
Further, the polyethylene color master batch in the three-layer structure is respectively selected from one of yellow polyethylene color master batch, orange polyethylene color master batch and black polyethylene color master batch; when the colorful wood-plastic section bar is used specifically, the colors of the polyethylene color master batches adopted by each layer of structure in the colorful wood-plastic section bar are kept different.
example 2
the colorful wood-plastic section bar is of a four-layer structure, and the thickness of each layer is 0.5 mm; each layer structure of the colorful wood-plastic sectional material comprises the following raw materials in parts by weight: 32 parts of etherified modified wood powder, 22 parts of polyvinyl chloride plastic particles, 8 parts of polyethylene color master batches, 9 parts of silicon-aluminum hollow spheres, 9 parts of styrene-butadiene rubber, 3 parts of PVC foaming regulator HL100 model, 0.7 part of OBSH foaming agent, PA-204 parts of PVC processing aid, 5 parts of benzotriazole ultraviolet absorbent, and 2 parts of a mixture of antioxidant 168 and antioxidant 1010.
Further, the etherified modified wood flour is prepared by modifying wood flour with an etherifying reagent; the etherification reagent is diethyl sulfate; and during wood powder modification, wood powder is subjected to etherification reaction with the etherification reagent in a sodium hydroxide solution to obtain the wood powder.
Further, the polyethylene color master batch in the four-layer structure is respectively selected from one of green polyethylene color master batch, blue polyethylene color master batch, red polyethylene color master batch and white polyethylene color master batch; when the colorful wood-plastic section bar is used specifically, the colors of the polyethylene color master batches adopted by each layer of structure in the colorful wood-plastic section bar are kept different.
example 3
the colorful wood-plastic section bar is of a six-layer structure, and the thickness of each layer is 0.6 mm; each layer structure of the colorful wood-plastic sectional material comprises the following raw materials in parts by weight: 35 parts of etherified modified wood powder, 24 parts of polyvinyl chloride plastic particles, 10 parts of polyethylene color master batches, 10 parts of silicon-aluminum hollow spheres, 10 parts of nitrile rubber or chlorinated polyethylene, 5 parts of PVC foaming regulator HL100 model, 0.8 part of PTSS foaming agent, 5 parts of PVC processing aid ACR-4015 parts, 6 parts of benzotriazole ultraviolet absorbent, and 3 parts of a mixture of antioxidant 168 and antioxidant 1010.
further, the etherified modified wood flour is prepared by modifying wood flour with an etherifying reagent; the etherification reagent is bromoethane or acrylonitrile; and during wood powder modification, wood powder is subjected to etherification reaction with the etherification reagent in a sodium hydroxide solution to obtain the wood powder.
Further, the polyethylene color master batches are respectively selected from one of yellow polyethylene color master batches, orange polyethylene color master batches, green polyethylene color master batches, blue polyethylene color master batches, red polyethylene color master batches and gray polyethylene color master batches; when the colorful wood-plastic section bar is used specifically, the colors of the polyethylene color master batches adopted by each layer of structure in the colorful wood-plastic section bar are kept different.
Example 4
The preparation method of the multi-color wood-plastic profile in the embodiments 1 to 3 of this embodiment includes the following steps:
(1) preparing etherified modified wood powder:
carrying out etherification reaction on wood powder and an etherification reagent in a sodium hydroxide solution to prepare etherified modified wood powder;
(2) Preparing a surface layer structure of the colorful wood-plastic sectional material, namely a first layer structure:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2 hours, then heating to 50 ℃, continuing stirring, keeping the temperature for 1 hour, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing is 160 ℃, the time is 15min, and the pressure is 0.15 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170 ℃;
(3) preparing a second layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2 hours, then heating to 50 ℃, continuing stirring, keeping the temperature for 1 hour, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing is 160 ℃, the time is 15min, and the pressure is 0.15 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170 ℃;
Wherein, the color of the polyethylene color master batch in the second layer structure is different from that of the polyethylene color master batch in the first layer structure;
(4) preparing a third layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2 hours, then heating to 50 ℃, continuing stirring, keeping the temperature for 1 hour, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing is 160 ℃, the time is 15min, and the pressure is 0.15 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170 ℃;
wherein, the color of the polyethylene color master batch in the third layer structure is different from the color of the polyethylene color master batch in the first layer structure and the second layer structure;
(5) Repeating the operations of the steps (2) to (4) until the number of prepared layers reaches the target requirement;
(6) preparing a colorful wood-plastic section:
The layers of the structure prepared in the step are overlapped and co-extruded when the structure is hot and pass through a rectangular neck mold, the temperature of the neck mold is 185 ℃, and a rectangular flat plate with a multilayer structure is prepared after forming; then, cooling, shaping and embossing the rectangular flat plate to obtain a multi-layer co-extrusion molded colorful wood-plastic profile; and forming various uneven patterns on the surface of the colorful wood-plastic section by an embossing process, wherein the patterns are different in color.
example 5
the preparation method of the multi-color wood-plastic profile in the embodiments 1 to 3 of this embodiment includes the following steps:
(1) preparing etherified modified wood powder:
Carrying out etherification reaction on wood powder and an etherification reagent in a sodium hydroxide solution to prepare etherified modified wood powder;
(2) preparing a surface layer structure of the colorful wood-plastic sectional material, namely a first layer structure:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2.5 hours, then heating to 60 ℃, continuing stirring, keeping the temperature for 3 hours, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 163 ℃, the time is 18min, and the pressure is 0.2 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 175 ℃;
(3) preparing a second layer structure of the colorful wood-plastic profile:
Firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2.5 hours, then heating to 60 ℃, continuing stirring, keeping the temperature for 3 hours, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 163 ℃, the time is 18min, and the pressure is 0.2 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 175 ℃;
Wherein, the color of the polyethylene color master batch in the second layer structure is different from that of the polyethylene color master batch in the first layer structure;
(4) Preparing a third layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2.5 hours, then heating to 60 ℃, continuing stirring, keeping the temperature for 3 hours, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 163 ℃, the time is 18min, and the pressure is 0.2 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 175 ℃;
Wherein, the color of the polyethylene color master batch in the third layer structure is different from the color of the polyethylene color master batch in the first layer structure and the second layer structure;
(5) repeating the operations of the steps (2) to (4) until the number of prepared layers reaches the target requirement;
(6) preparing a colorful wood-plastic section:
the layers of the structure prepared in the step are overlapped and co-extruded when the structure is hot and pass through a rectangular neck mold, the temperature of the neck mold is 195 ℃, and a rectangular flat plate with a multilayer structure is prepared after molding; then, cooling, shaping and embossing the rectangular flat plate to obtain a multi-layer co-extrusion molded colorful wood-plastic profile; and forming various uneven patterns on the surface of the colorful wood-plastic section by an embossing process, wherein the patterns are different in color.
example 6
the preparation method of the multi-color wood-plastic profile in the embodiments 1 to 3 of this embodiment includes the following steps:
(1) Preparing etherified modified wood powder:
Carrying out etherification reaction on wood powder and an etherification reagent in a sodium hydroxide solution to prepare etherified modified wood powder;
(2) Preparing a surface layer structure of the colorful wood-plastic sectional material, namely a first layer structure:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 3 hours, then heating to 70 ℃, continuing stirring, keeping the temperature for 4 hours, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing is 165 ℃, the time is 20min, and the pressure is 0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 180 ℃;
(3) preparing a second layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 3 hours, then heating to 70 ℃, continuing stirring, keeping the temperature for 4 hours, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing is 165 ℃, the time is 20min, and the pressure is 0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 180 ℃;
Wherein, the color of the polyethylene color master batch in the second layer structure is different from that of the polyethylene color master batch in the first layer structure;
(4) Preparing a third layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 3 hours, then heating to 70 ℃, continuing stirring, keeping the temperature for 4 hours, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing is 165 ℃, the time is 20min, and the pressure is 0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 180 ℃;
Wherein, the color of the polyethylene color master batch in the third layer structure is different from the color of the polyethylene color master batch in the first layer structure and the second layer structure;
(5) repeating the operations of the steps (2) to (4) until the number of prepared layers reaches the target requirement;
(6) preparing a colorful wood-plastic section:
the layers of the structure prepared in the step are overlapped and co-extruded through a rectangular neck mold when the structure is hot, the temperature of the neck mold is 200 ℃, and a rectangular flat plate with a multilayer structure is prepared after forming; then, cooling, shaping and embossing the rectangular flat plate to obtain a multi-layer co-extrusion molded colorful wood-plastic profile; and forming various uneven patterns on the surface of the colorful wood-plastic section by an embossing process, wherein the patterns are different in color.
example 7
in this example, the colorful wood-plastic profiles of examples 1-3 were sampled and tested for physical and mechanical properties, and the testing results are shown in table 1.
TABLE 1 comparison of the physical and mechanical properties of the multi-color wood-plastic section bar of the present invention and the common wood-plastic section bars on the market
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. a colorful wood-plastic section is characterized in that the section is of a multilayer structure; each layer structure of the colorful wood-plastic sectional material comprises the following raw materials in parts by weight: 30-35 parts of etherified modified wood powder, 20-24 parts of polyvinyl chloride plastic particles, 5-10 parts of polyethylene color master batches, 8-10 parts of silicon-aluminum hollow spheres, 8-10 parts of reinforcing agents, 1-5 parts of foaming regulators, 0.5-0.8 part of foaming agents, 2-5 parts of processing aids, 3-6 parts of ultraviolet absorbers and 1-3 parts of antioxidants; wherein, the color of the polyethylene color master batches adopted by each layer structure in the colorful wood-plastic section bar is different.
2. The multicolor wood-plastic section bar according to claim 1, wherein the etherified modified wood flour is prepared by modifying wood flour with an etherifying reagent; the etherification reagent is one or more of benzyl chloride, diethyl sulfate, ethyl bromide and acrylonitrile; and during wood powder modification, wood powder and the etherification reagent are subjected to etherification reaction in a sodium hydroxide solution to obtain the wood powder.
3. The multi-color wood-plastic composite material of claim 1, wherein the polyethylene color masterbatch is one of yellow polyethylene color masterbatch, orange polyethylene color masterbatch, black polyethylene color masterbatch, green polyethylene color masterbatch, blue polyethylene color masterbatch, red polyethylene color masterbatch, white polyethylene color masterbatch, and gray polyethylene color masterbatch; when the colorful wood-plastic section bar is used specifically, the polyethylene color master batches adopted by each layer of structure in the colorful wood-plastic section bar are different in color.
4. The multi-colored wood-plastic profile according to claim 1, wherein the reinforcing agent is one or more of styrene, styrene-butadiene rubber, butadiene-acrylonitrile rubber and chlorinated polyethylene.
5. the multicolor wood-plastic section bar according to claim 1, wherein the foaming agent is one or more of ADC foaming agent, OBSH foaming agent and PTSS foaming agent, and the foaming regulator is PVC foaming regulator HL100 model.
6. the multicolor wood-plastic section bar according to claim 1, wherein the processing aid is one or more of PVC processing aids ACR-401 and PA-20.
7. the multi-colored wood-plastic profile of claim 1, wherein the UV absorber is a benzotriazole-based UV absorber.
8. the multicolor wood-plastic profile according to claim 1, wherein the antioxidant is a mixture of antioxidant 168 and antioxidant 1010.
9. a multicolored wood-plastic profile according to any one of claims 1 to 8, characterized in that said multicolored wood-plastic profile has a 3-6 layer structure.
10. A method for preparing a multi-colored wood-plastic profile according to any one of claims 1 to 9, comprising the following steps:
(1) Preparing etherified modified wood powder:
Carrying out etherification reaction on wood powder and the etherification reagent in a sodium hydroxide solution to prepare etherified modified wood powder;
(2) preparing a surface layer structure of the colorful wood-plastic sectional material, namely a first layer structure:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2-3h, then heating to 50-70 ℃, continuing stirring, keeping the temperature for 1-4h, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
Secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 160-165 ℃, the time is 15-20min, and the pressure is 0.15-0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170-180 ℃;
(3) preparing a second layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2-3h, then heating to 50-70 ℃, continuing stirring, keeping the temperature for 1-4h, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 160-165 ℃, the time is 15-20min, and the pressure is 0.15-0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170-180 ℃;
wherein, the color of the polyethylene color master batch in the second layer structure is different from that of the polyethylene color master batch in the first layer structure;
(4) Preparing a third layer structure of the colorful wood-plastic profile:
firstly, dissolving polyvinyl chloride plastic particles in an organic solvent trichloromethane, adding etherified modified wood powder, stirring for 2-3h, then heating to 50-70 ℃, continuing stirring, keeping the temperature for 1-4h, cooling to room temperature, carrying out suction filtration separation, or distilling to recover the organic solvent, cooling to room temperature, carrying out suction filtration separation, then drying and crushing the separated wood-plastic material to obtain etherified wood-plastic powder;
secondly, mixing the prepared etherified wood-plastic powder with polyethylene color master batches, silicon-aluminum hollow spheres, reinforcing agents, foaming regulators, foaming agents, processing aids, ultraviolet absorbers and antioxidants according to the weight parts, and mixing the materials at a high pressure, wherein the temperature of the high-pressure mixing material is 160-165 ℃, the time is 15-20min, and the pressure is 0.15-0.25 MPa; after being uniformly mixed, the mixture is extruded and molded by an extruder, and the extrusion temperature is 170-180 ℃;
Wherein, the color of the polyethylene color master batch in the third layer structure is different from the color of the polyethylene color master batch in the first layer structure and the second layer structure;
(5) repeating the operations of the steps (2) to (4) until the number of prepared layers reaches the target requirement;
(6) preparing a colorful wood-plastic section:
the layers of the structure prepared in the step are overlapped and co-extruded when the structure is hot and pass through a rectangular neck mold, the temperature of the neck mold is 185-200 ℃, and a rectangular flat plate with a multilayer structure is prepared after molding; and then, cooling, shaping and embossing the rectangular flat plate to obtain the multi-layer co-extrusion formed colorful wood-plastic sectional material.
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CN104530600A (en) * 2014-12-26 2015-04-22 辽宁程威塑料型材有限公司 Colorful co-extruded plastic pipeline
CN108948582A (en) * 2018-07-05 2018-12-07 湖北欧宅新材料科技有限公司 PVC co-extrusion section bar and preparation method thereof in a kind of environment-friendly type room
CN109486084A (en) * 2018-08-15 2019-03-19 江苏福瑞森塑木科技股份有限公司 Three-layer co-extruded molding polychrome wood plastic composite board of one kind and preparation method thereof

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Application publication date: 20191213