CN112895380A - Co-extrusion wood-plastic foaming board - Google Patents
Co-extrusion wood-plastic foaming board Download PDFInfo
- Publication number
- CN112895380A CN112895380A CN202110042566.0A CN202110042566A CN112895380A CN 112895380 A CN112895380 A CN 112895380A CN 202110042566 A CN202110042566 A CN 202110042566A CN 112895380 A CN112895380 A CN 112895380A
- Authority
- CN
- China
- Prior art keywords
- foaming
- extrusion
- section
- parts
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005187 foaming Methods 0.000 title claims abstract description 95
- 238000001125 extrusion Methods 0.000 title claims abstract description 76
- 229920003023 plastic Polymers 0.000 title abstract description 24
- 239000004033 plastic Substances 0.000 title abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 60
- 239000012792 core layer Substances 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 239000002344 surface layer Substances 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000013329 compounding Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 23
- 239000002023 wood Substances 0.000 claims description 19
- 239000002984 plastic foam Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- 239000002270 dispersing agent Substances 0.000 claims description 12
- 239000007822 coupling agent Substances 0.000 claims description 10
- 239000004088 foaming agent Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 229920001903 high density polyethylene Polymers 0.000 claims description 10
- 239000004700 high-density polyethylene Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- OXDXXMDEEFOVHR-CLFAGFIQSA-N (z)-n-[2-[[(z)-octadec-9-enoyl]amino]ethyl]octadec-9-enamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)NCCNC(=O)CCCCCCC\C=C/CCCCCCCC OXDXXMDEEFOVHR-CLFAGFIQSA-N 0.000 claims description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical group [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 26
- 229920001587 Wood-plastic composite Polymers 0.000 abstract description 12
- 239000011155 wood-plastic composite Substances 0.000 abstract description 12
- 239000010410 layer Substances 0.000 description 22
- 239000006260 foam Substances 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 9
- 230000006872 improvement Effects 0.000 description 9
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- 239000004800 polyvinyl chloride Substances 0.000 description 6
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 239000003607 modifier Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical class [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000004610 Internal Lubricant Substances 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000013012 foaming technology Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- 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
- C08J9/107—Nitroso compounds
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
-
- 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
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/22—Expandable microspheres, e.g. Expancel®
-
- 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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Abstract
The invention relates to the technical field of wood-plastic composite materials, and provides a co-extrusion wood-plastic foaming plate which comprises a foaming core layer and a surface layer wrapped on the surface of the foaming core layer, wherein the foaming core layer and the surface layer are formed by compounding through a co-extrusion foaming mold, the co-extrusion foaming mold comprises an extrusion section, an expansion section, a co-extrusion section and a cooling section which are sequentially connected, the extrusion section is provided with a raw material flowing cavity, the expansion section is provided with a foaming cavity, the co-extrusion section is provided with a composite cavity, the cooling section is provided with a cooling cavity, the raw material flowing cavity, the foaming cavity, the composite cavity and the cooling cavity are sequentially communicated, the upper side and the lower side of the expansion section are provided with vent holes, the upper side and the lower side of the co-extrusion section are provided with feed inlets, a. The problems of high density, large consumption of raw materials and high production cost of the co-extruded wood-plastic board in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of wood-plastic composite materials, in particular to a co-extrusion wood-plastic foaming board.
Background
The wood-plastic composite material is a composite material made of wood or cellulose as a base material and plastic. The wood-plastic composite material has the advantages of both wood and plastic, and has many characteristics which are incomparable with pure wood and plastic, namely wood appearance and secondary processability similar to wood, but better dimensional stability than wood, small water absorption, moth resistance and no crack or warping deformation like wood; has the processability of thermoplastic plastics, but has higher hardness than the plastics, and has wear resistance, aging resistance and corrosion resistance. However, the wood-plastic composite material also has the defects of high density, poor ductility and low toughness and impact strength, and the good foam structure of the wood-plastic composite material can passivate the tips of cracks and prevent the cracks from expanding by adding the foaming agent, so that the defects are effectively overcome, the raw materials are saved, and the wood-plastic composite material has better sound insulation and heat insulation properties.
The co-extrusion technology is a novel molding process of the wood-plastic composite material, and is mainly characterized in that a material with high hardness and high weather resistance is co-extruded with a foaming material to form a protective layer on the surface of the foaming material, so that the co-extrusion wood-plastic composite material is prepared. Compared with the original wood-plastic composite material with the cellular structure, the co-extrusion wood-plastic composite material has the advantages that the mechanical properties of the co-extrusion wood-plastic composite material in the aspects of surface hardness, bending modulus, impact resistance coefficient and the like are obviously improved, the surface decoration of the product is more diversified, and the luster, color and texture of the product can be changed by selecting different raw materials.
The existing co-extrusion type wood-plastic material is mainly prepared by taking polyvinyl chloride as a main raw material, such as patent application numbers: 201710325845.1 discloses a PVC wood-plastic foaming base material and a preparation method thereof, wherein the wood-plastic foaming base material is prepared from the following raw materials in parts by weight: 100 parts of PVC-SG5, 1-70 parts of sulfur-fixing ash, 5-3 parts of wood powder, 3-6 parts of stabilizer, 0.8-1.8 parts of ACR processing aid, 0.4-1.5 parts of PE wax, 3-17 parts of toughening modifier, 0.1-1 part of internal lubricant, 0.1-1 part of high-temperature lubricant, 0.3-0.7 part of high-temperature foaming agent, 0.3-0.7 part of low-temperature foaming agent and 4-8 parts of foaming regulator. By adopting a conical double-screw three-layer co-extrusion technology, the dry mixture of the skin layer and the core layer is respectively fed into a skin layer extruder and a core layer extruder to be melted and then extruded, and the PVC wood-plastic foaming base material is obtained through molding of a plate mold. The co-extruded wood-plastic material made of the PVC material has high density (1.35 g/cm)3Left and right), and usually the core layer raw materials are foamed first and then enter the coextrusion die for coextrusion molding, belong to the foaming technology outside the die, the foaming degree is difficult to control, the position of excessive foaming needs to be pruned and then sent into the coextrusion die, the raw materials consumed are many, the cost is high. In addition, the surface of the co-extruded wood-plastic material prepared by external foaming is easy to crack.
Disclosure of Invention
Therefore, aiming at the content, the invention provides the co-extrusion wood-plastic foaming board, which solves the problems of high density, more raw materials consumption and high production cost of the co-extrusion wood-plastic board in the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a foaming board is moulded to crowded wood altogether, includes foaming sandwich layer and the top layer of parcel in the foaming sandwich layer outside, foaming sandwich layer and top layer are through crowded foaming mould complex shaping altogether, crowded foaming mould is including extrusion section, inflation section, crowded section and the cooling zone that connects gradually altogether, it is equipped with the raw materials and flows the chamber to extrude the section, the inflation section is equipped with the foaming chamber, crowded section altogether is equipped with compound chamber, the cooling zone is equipped with the cooling chamber, raw materials flow chamber, foaming chamber, compound chamber, cooling chamber communicate in proper order, both sides are equipped with the exhaust hole about the inflation section, the upper and lower both sides of crowded section are equipped with the feed inlet altogether, be equipped with adiabatic baffle between crowded section and the cooling zone altogether, the upper and lower both sides in cooling chamber are equipped with forced cooling water piping return circuit, the preparation method of foaming:
(1) mixing the raw materials of the foaming core layer, conveying the mixture into a main double-screw extruder, and heating the mixture until the raw materials are molten;
(2) mixing the raw materials on the surface layer, conveying the mixture into an auxiliary double-screw extruder, and heating the mixture until the raw materials are molten;
(3) the method comprises the steps that a molten foaming core layer raw material enters an extrusion section of a co-extrusion foaming mold under the extrusion effect and sequentially passes through an expansion section, the co-extrusion section and a cooling section are adopted, the molten foaming core layer raw material is foamed in a foaming cavity of the expansion section and fills up the whole cavity to form a foaming core layer, redundant gas is discharged from an exhaust port and then enters a composite cavity, a molten surface layer raw material is synchronously extruded into the composite cavity from a feed inlet and is compounded with the foaming core layer in a co-extrusion mode, a surface layer is formed on the periphery of the foaming core layer and wraps the foaming core layer, a semi-finished product which is compounded in the co-extrusion mode is fed into the cooling cavity, the semi-finished product is cooled and shaped through cold.
The further improvement is that: the extrusion temperature of the main double-screw extruder is 150-170 ℃.
The further improvement is that: the extrusion temperature of the auxiliary double-screw extruder is 140-160 ℃.
The further improvement is that: the thickness of the foaming core layer is 2-5 cm, and the thickness of the surface layer is 0.5-2 cm.
The further improvement is that: the foaming core layer comprises, by weight, 42-64 parts of high-density polyethylene, 25-50 parts of wood powder, 1-3 parts of a compatilizer, 0.8-2 parts of a coupling agent, 1.2-2.4 parts of a dispersing agent, 1-2 parts of a lubricating agent and 0.5-1.5 parts of a composite foaming agent.
The further improvement is that: the surface layer comprises, by weight, 25-40 parts of an elastic material, 15-25 parts of high-density polyethylene, 28-36 parts of wood powder, 0.9-1.8 parts of a compatilizer, 1.2-3 parts of a coupling agent, 0.2-0.4 part of an antioxidant, 5-10 parts of a filler and 0.8-1.5 parts of a dispersing agent.
The further improvement is that: the lubricant is a mixture consisting of any one or more of ethylene bis stearamide, ethylene bis oleamide, polyethylene wax and zinc stearate.
The further improvement is that: the compatilizer is maleic anhydride grafted polyethylene and acrylic acid grafted polyethylene.
The further improvement is that: the dispersing agent is sodium polyacrylate or carboxymethyl cellulose.
The further improvement is that: the filler is any one of calcium carbonate, mica powder and talcum powder.
By adopting the technical scheme, the invention has the beneficial effects that:
the co-extrusion wood-plastic foaming board prepared by the invention is formed in a mold in a compounding way, so that various defects of foaming outside the mold are overcome, the foaming degree is accurately controlled, direct co-extrusion forming is carried out after foaming, trimming is not needed, unnecessary loss of raw materials is avoided, and the production cost is reduced. The foaming-compounding-cooling integration is realized, the production efficiency is greatly improved, and compared with the original production process, the equipment of the invention has small floor area and saves space. The co-extrusion foaming mold is formed by adopting a sectional combination mode and comprises an extrusion section, an expansion section, a co-extrusion section and a cooling section which are sequentially connected. The expansion section can set the size of the foaming cavity according to the requirements of products so as to meet different foaming multiplying powers. The foamed core layer is fully contacted with the molten surface material in a composite cavity in the co-extrusion section, the surface material is coated on the surface of the foamed core layer, and the foamed core layer is forcibly cooled and shaped by the cooling section, so that the possibility of plate denaturation is reduced. Because the foaming core layer has a porous structure and has a heat insulation phenomenon, the cooling speed of the plate is reduced, and the heat insulation clapboard is arranged between the co-extrusion section and the cooling section, so that the influence of the high-temperature environment of the co-extrusion section on the cooling section is reduced, and the plate is rapidly cooled.
The invention optimizes the raw materials of the foaming core layer, and the raw materials are environment-friendly and have no peculiar smell, good processing performance, uniform dispersion in the system and good compatibility. The specific gravity of the prepared wood-plastic plate is small and is 0.75-0.95g/cm3Within the range ofCompared with the existing PVC wood-plastic foam board, the co-extrusion wood-plastic foam board has the advantages that the carrying is relatively labor-saving and convenient during field loading and unloading of goods, more goods can be loaded on the premise of the same loading capacity, and the transportation cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a co-extruded wood-plastic foam board prepared according to a first embodiment of the invention;
fig. 2 is a schematic structural diagram of a co-extrusion foaming mold according to an embodiment of the invention.
Detailed Description
The following detailed description will be provided for the embodiments of the present invention with reference to specific embodiments, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
Unless otherwise indicated, the techniques employed in the examples are conventional and well known to those skilled in the art, and the reagents and products employed are also commercially available.
Example one
Referring to fig. 1 and 2, a co-extrusion wood-plastic foam board comprises a foam core layer 1 and a surface layer 2 wrapped outside the foam core layer 1, wherein the foam core layer 1 and the surface layer 2 are formed by a co-extrusion foam mold in a composite manner, the co-extrusion foam mold comprises an extrusion section 3, an expansion section 4, a co-extrusion section 5 and a cooling section 6 which are sequentially connected, the extrusion section 3 is provided with a raw material flow cavity 7, the expansion section 4 is provided with a foam cavity 8, the co-extrusion section 5 is provided with a composite cavity 9, the cooling section 6 is provided with a cooling cavity 10, the raw material flow cavity 7, the foam cavity 8, the composite cavity 9 and the cooling cavity 10 are sequentially communicated, vent holes 11 are formed in the upper side and the lower side of the expansion section 4, feed inlets 12 are formed in the upper side and the lower side of the co-extrusion section 5, a heat insulation partition plate 13 is arranged between the co-extrusion, the preparation method of the co-extruded wood-plastic plate comprises the following steps:
(1) mixing raw materials of a foaming core layer, conveying the mixture into a main screw extruder, and heating the mixture until the raw materials are molten, wherein the raw materials of the foaming core layer comprise 42 parts by weight of high-density polyethylene, 25 parts by weight of wood powder, 1 part by weight of compatilizer, 0.8 part by weight of coupling agent, 1.2 parts by weight of dispersing agent, 0.3 part by weight of microsphere foaming agent (butane and pentane are wrapped in an organic material shell), and 0.2 part by weight of white foaming agent (nitrite derivative);
(2) mixing raw materials of a surface layer, conveying the mixture into an auxiliary double-screw extruder, and heating the mixture until the raw materials are molten, wherein the raw materials of the surface layer comprise 25 parts by weight of elastic materials, 15 parts by weight of high-density polyethylene, 28 parts by weight of wood powder, 0.9 part by weight of compatilizer, 1.2 parts by weight of coupling agent, 0.2 part by weight of antioxidant, 1.5 parts by weight of interface modifier, 5 parts by weight of wear-resistant filler and 0.8 part by weight of dispersing agent;
(3) the foaming core layer raw material of fuse state gets into the section of extruding of crowded foaming mould altogether under the effect of extruding, and loop through the inflation section, crowded section and cooling zone altogether, the sandwich layer raw material of fuse state foams and fills up whole cavity formation foaming core layer in the foaming cavity of inflation section, unnecessary gas is discharged from the gas vent, then get into compound chamber, the superficial layer raw material of fuse state is extruded into in the compound chamber from the feed inlet in step, crowd the complex with the sandwich layer altogether, form the top layer at the periphery of foaming core layer, the foaming core layer is wrapped up in the top layer, through crowded compound semi-manufactured goods send into the cooling cavity altogether, through cold water forced cooling design, at last pull conveying to the operation panel saw cutting by the tractor, the shaping obtains crowded.
Wherein the extrusion temperature of the main double-screw extruder is 150 ℃, and the extrusion temperature of the auxiliary double-screw extruder is 140 ℃. The thickness of the foaming core layer is 2cm, and the thickness of the surface layer is 0.5 cm.
Example two
A co-extrusion wood-plastic foaming board is prepared by the following steps:
(1) mixing the raw materials of a foaming core layer, conveying the mixture into a main double-screw extruder, and heating the mixture until the raw materials are molten, wherein the raw materials of the foaming core layer comprise 54 parts by weight of high-density polyethylene, 36 parts by weight of wood powder, 2 parts by weight of compatilizer, 1.5 parts by weight of coupling agent, 1.8 parts by weight of dispersing agent and 1 part by weight of composite foaming agent produced by Fujiasda new material science and technology limited company
(2) Mixing raw materials of a surface layer, conveying the mixture into an auxiliary double-screw extruder, and heating the mixture until the raw materials are molten, wherein the raw materials of the surface layer comprise 32 parts by weight of elastic materials, 20 parts by weight of high-density polyethylene, 32 parts by weight of wood powder, 1.4 parts by weight of compatilizer, 2.1 parts by weight of coupling agent, 0.3 part by weight of antioxidant, 2 parts by weight of interface modifier, 8 parts by weight of wear-resistant filler and 1.2 parts by weight of dispersant;
(3) the foaming sandwich layer raw materials of melt state get into the section of extruding of crowded foaming mould altogether under the effect of extruding, and loop through the inflation section, crowded section and cooling zone altogether, the sandwich layer raw materials of melt state foams and fills up whole cavity formation sandwich layer in the foaming intracavity of inflation section, unnecessary gas is discharged from the gas vent, then get into compound chamber, the superficial layer raw materials of melt state extrudes into in the compound chamber from the feed inlet in step, crowd compound with the sandwich layer altogether, form the top layer at the periphery of foaming sandwich layer, the foaming sandwich layer is wrapped up in on the top layer, send into the cooling chamber through crowded compound semi-manufactured goods altogether, through the forced cooling of cold water and stereotype, at last pull the conveying to the operation panel saw cutting through the tractor.
Wherein the extrusion temperature of the main double-screw extruder is 160 ℃, and the extrusion temperature of the auxiliary double-screw extruder is 150 ℃. The thickness of the foaming core layer is 4cm, and the thickness of the surface layer is 1 cm.
EXAMPLE III
A co-extrusion wood-plastic foaming board is prepared by the following steps:
(1) mixing raw materials of a foaming core layer, conveying the mixture into a main double-screw extruder, and heating the mixture until the raw materials are molten, wherein the raw materials of the foaming core layer comprise 64 parts by weight of high-density polyethylene, 50 parts by weight of wood powder, 3 parts by weight of compatilizer, 2 parts by weight of coupling agent, 2.4 parts by weight of dispersing agent, 1.2 parts by weight of microsphere foaming agent (butane and pentane are wrapped in an organic material shell), and 0.3 part by weight of white foaming agent (nitrite derivative);
(2) mixing raw materials of a surface layer, conveying the mixture into an auxiliary double-screw extruder, and heating the mixture until the raw materials are molten, wherein the raw materials of the surface layer comprise 40 parts by weight of elastic material, 25 parts by weight of high-density polyethylene, 36 parts by weight of wood powder, 1.8 parts by weight of compatilizer, 3 parts by weight of coupling agent, 0.4 part by weight of antioxidant, 2.5 parts by weight of interface modifier, 5-10 parts by weight of wear-resistant filler and 1.5 parts by weight of dispersant;
(3) the method comprises the steps that a molten foaming core layer raw material enters an extrusion section of a co-extrusion foaming mold under the extrusion effect and sequentially passes through an expansion section, the co-extrusion section and a cooling section are adopted, the molten core layer raw material is foamed in a foaming cavity of the expansion section and fills up the whole cavity to form a core layer, redundant gas is discharged from an exhaust port and then enters a composite cavity, a molten surface layer raw material is synchronously extruded into the composite cavity from a feed port and is co-extruded and compounded with the core layer, surface layers are formed on the upper surface and the lower surface of the core layer, a semi-finished product which is co-extruded and compounded is sent into the cooling cavity, the semi-finished product is forcibly cooled and shaped through cold water.
Wherein the extrusion temperature of the main double-screw extruder is 170 ℃, and the extrusion temperature of the auxiliary double-screw extruder is 160 ℃. The thickness of the foaming core layer is 5cm, and the thickness of the surface layer is 2 cm.
The density of the co-extruded wood-plastic foamed board prepared in the first to third examples is tested, and a PVC co-extruded wood-plastic board produced by a traditional out-of-mold foaming process is used as a comparative example, and the test results are shown in Table 1.
The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.
Claims (10)
1. The co-extrusion wood-plastic foam board is characterized in that: the manufacturing method comprises a foaming core layer and a surface layer wrapped outside the foaming core layer, wherein the foaming core layer and the surface layer are formed by compounding a co-extrusion foaming mold, the co-extrusion foaming mold comprises an extrusion section, an expansion section, a co-extrusion section and a cooling section which are sequentially connected, the extrusion section is provided with a raw material flowing cavity, the expansion section is provided with a foaming cavity, the co-extrusion section is provided with a composite cavity, the cooling section is provided with a cooling cavity, the raw material flowing cavity, the foaming cavity, the composite cavity and the cooling cavity are sequentially communicated, exhaust holes are formed in the upper side and the lower side of the expansion section, feed inlets are formed in the upper side and the lower side of the co-extrusion section, a heat insulation partition plate is arranged between the co-extrusion section and the cooling section, forced cooling water pipeline loops:
(1) mixing the raw materials of the foaming core layer, conveying the mixture into a main double-screw extruder, and heating the mixture until the raw materials are molten;
(2) mixing the raw materials on the surface layer, conveying the mixture into an auxiliary double-screw extruder, and heating the mixture until the raw materials are molten;
(3) the method comprises the steps that a molten foaming core layer raw material enters an extrusion section of a co-extrusion foaming mold under the extrusion effect and sequentially passes through an expansion section, the co-extrusion section and a cooling section are adopted, the molten foaming core layer raw material is foamed in a foaming cavity of the expansion section and fills up the whole cavity to form a foaming core layer, redundant gas is discharged from an exhaust port and then enters a composite cavity, a molten surface layer raw material is synchronously extruded into the composite cavity from a feed inlet and is compounded with the foaming core layer in a co-extrusion mode, a surface layer is formed on the periphery of the foaming core layer and wraps the foaming core layer, a semi-finished product which is compounded in the co-extrusion mode is fed into the cooling cavity, the semi-finished product is cooled and shaped through cold.
2. The co-extruded wood-plastic foam board as claimed in claim 1, wherein: the extrusion temperature of the main double-screw extruder is 150-170 ℃.
3. The co-extruded wood-plastic foam board as claimed in claim 1, wherein: the extrusion temperature of the auxiliary double-screw extruder is 140-160 ℃.
4. The co-extruded wood-plastic foam board as claimed in claim 1, wherein: the thickness of the foaming core layer is 2-5 cm, and the thickness of the surface layer is 0.5-2 cm.
5. The co-extruded wood-plastic foam board as claimed in claim 1, wherein: the foaming core layer comprises, by weight, 42-64 parts of high-density polyethylene, 25-50 parts of wood powder, 1-3 parts of a compatilizer, 0.8-2 parts of a coupling agent, 1.2-2.4 parts of a dispersing agent, 1-2 parts of a lubricating agent and 0.5-1.5 parts of a composite foaming agent.
6. The co-extruded wood-plastic foam board as claimed in claim 1, wherein: the surface layer comprises, by weight, 25-40 parts of an elastic material, 15-25 parts of high-density polyethylene, 28-36 parts of wood powder, 0.9-1.8 parts of a compatilizer, 1.2-3 parts of a coupling agent, 0.2-0.4 part of an antioxidant, 5-10 parts of a filler and 0.8-1.5 parts of a dispersing agent.
7. The co-extruded wood-plastic foam board as claimed in claim 5, wherein: the lubricant is a mixture consisting of any one or more of ethylene bis stearamide, ethylene bis oleamide, polyethylene wax and zinc stearate.
8. The co-extruded wood-plastic foam board as claimed in claim 5 or 6, wherein: the compatilizer is maleic anhydride grafted polyethylene and acrylic acid grafted polyethylene.
9. The co-extruded wood-plastic foam board as claimed in claim 5 or 6, wherein: the dispersing agent is sodium polyacrylate or carboxymethyl cellulose.
10. The co-extruded wood-plastic foam board as claimed in claim 6, wherein: the filler is any one of calcium carbonate, mica powder and talcum powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110042566.0A CN112895380A (en) | 2021-01-13 | 2021-01-13 | Co-extrusion wood-plastic foaming board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110042566.0A CN112895380A (en) | 2021-01-13 | 2021-01-13 | Co-extrusion wood-plastic foaming board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112895380A true CN112895380A (en) | 2021-06-04 |
Family
ID=76112775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110042566.0A Pending CN112895380A (en) | 2021-01-13 | 2021-01-13 | Co-extrusion wood-plastic foaming board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112895380A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113619146A (en) * | 2021-08-30 | 2021-11-09 | 青岛绿之都新材料有限公司 | PE foamed co-extruded section product and preparation method thereof |
| CN114043696A (en) * | 2021-11-02 | 2022-02-15 | 宁波禾隆新材料股份有限公司 | Wood-grain-like HDPE co-extruded foam board and preparation method thereof |
| CN114851459A (en) * | 2022-04-21 | 2022-08-05 | 巩义市泛锐熠辉复合材料有限公司 | Production equipment and preparation method of foam sandwich cellular board |
| CN115476566A (en) * | 2022-09-26 | 2022-12-16 | 安徽义鼎建筑工程有限公司 | Wood-plastic co-extrusion building template and preparation method thereof |
| CN116176086A (en) * | 2023-04-24 | 2023-05-30 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2749664Y (en) * | 2004-11-18 | 2006-01-04 | 连云港杰瑞模具技术有限公司 | Surface co-extruding sandwich layer foaming extrusion dies |
| CN110437521A (en) * | 2019-07-08 | 2019-11-12 | 陕西科技大学 | A kind of expansion type core-shell structure wood plastic composite and preparation method |
-
2021
- 2021-01-13 CN CN202110042566.0A patent/CN112895380A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2749664Y (en) * | 2004-11-18 | 2006-01-04 | 连云港杰瑞模具技术有限公司 | Surface co-extruding sandwich layer foaming extrusion dies |
| CN110437521A (en) * | 2019-07-08 | 2019-11-12 | 陕西科技大学 | A kind of expansion type core-shell structure wood plastic composite and preparation method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113619146A (en) * | 2021-08-30 | 2021-11-09 | 青岛绿之都新材料有限公司 | PE foamed co-extruded section product and preparation method thereof |
| CN114043696A (en) * | 2021-11-02 | 2022-02-15 | 宁波禾隆新材料股份有限公司 | Wood-grain-like HDPE co-extruded foam board and preparation method thereof |
| CN114851459A (en) * | 2022-04-21 | 2022-08-05 | 巩义市泛锐熠辉复合材料有限公司 | Production equipment and preparation method of foam sandwich cellular board |
| CN114851459B (en) * | 2022-04-21 | 2023-06-06 | 巩义市泛锐熠辉复合材料有限公司 | Production equipment and preparation method of foam sandwich honeycomb plate |
| CN115476566A (en) * | 2022-09-26 | 2022-12-16 | 安徽义鼎建筑工程有限公司 | Wood-plastic co-extrusion building template and preparation method thereof |
| CN116176086A (en) * | 2023-04-24 | 2023-05-30 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
| CN116176086B (en) * | 2023-04-24 | 2023-08-08 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112895380A (en) | Co-extrusion wood-plastic foaming board | |
| CN101323176B (en) | Method for preparing plastic wood compound material/rigid foam composite and light weight type wall plate | |
| CN103370197A (en) | Method for producing a multi-layer plastic film | |
| CN105566721B (en) | A kind of high temperature resistant XPE foams and preparation method thereof | |
| CN102344622A (en) | Outdoor high-molecular co-extrusion floor and its preparation method | |
| CN108976639A (en) | The production method of nano-high molecule bamboo and woods fiber integrated wall plate | |
| CN106883490A (en) | Fretting map master batch and preparation method thereof and refrigerator foaming plate | |
| CN103756124A (en) | Polypropylene foaming material, production and preparation method of product | |
| CN103085219A (en) | Microporous foamed rubber-plastic heat insulation product and preparation method thereof | |
| CN106009353B (en) | Graphite extruded sheet and its preparation technology are used in thermal insulation | |
| CN105799136A (en) | Production method and processing mold of PVC co-extrusion stone plastic profiled material | |
| CN109666215A (en) | A kind of high-intensity hollow composite material building mould board and its processing method and recovery method | |
| CN109735023A (en) | A kind of PVC modified hard composite material and Preparation equipment | |
| CN103407263A (en) | Alloy composite board and use thereof | |
| CN105415839A (en) | Polyvinyl chloride co-extrusion wood-plastic plate and preparation method thereof | |
| CN101913241A (en) | Making machine of PVC (Polyvinyl Chloride) foaming plate | |
| CN109501197A (en) | A kind of good hollow composite material building template of anti-flammability and its processing method and recovery method | |
| CN112457577B (en) | Polypropylene composite material and preparation method and application thereof | |
| CN105667038B (en) | Carbon fiber mesh fabric strengthens the manufacture method and product of compound EPP foaming plates | |
| CN114043696A (en) | Wood-grain-like HDPE co-extruded foam board and preparation method thereof | |
| CN203719307U (en) | Alloy composite board, lining and liner made from alloy composite board, and refrigeration plant | |
| CN105199420A (en) | Door core material and preparation method thereof | |
| CN105346180A (en) | High-hardness ABS sheet | |
| CN108517090A (en) | A method of preparing low temperature high rigidity polyvinyl chloride crust foaming plate material | |
| CN216914614U (en) | Pearl wool material forming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |
|
| RJ01 | Rejection of invention patent application after publication |