CN108715074A - A kind of PET wood plastic composites with sandwich structure - Google Patents
A kind of PET wood plastic composites with sandwich structure Download PDFInfo
- Publication number
- CN108715074A CN108715074A CN201810370141.0A CN201810370141A CN108715074A CN 108715074 A CN108715074 A CN 108715074A CN 201810370141 A CN201810370141 A CN 201810370141A CN 108715074 A CN108715074 A CN 108715074A
- Authority
- CN
- China
- Prior art keywords
- pet
- wood
- extrusion equipment
- wood plastic
- auxiliary
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—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
-
- 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
- B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
-
- 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
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—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
-
- 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
- C08J9/08—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 carbon dioxide
-
- 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
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0264—Polyester
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- 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
- B32B2607/00—Walls, panels
-
- 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
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- 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
- C08J2203/18—Binary blends of expanding agents
-
- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy 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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of PET wood plastic composites with sandwich structure.The invention belongs to field of compound material, are related to a kind of PET wood plastic composites, and in particular to a kind of PET wood plastic composites with sandwich structure.To achieve the object of the present invention, the present invention has layered structure, side including at least one middle layer, the middle layer at least has there are one upper epidermis, also at least there are one layers for tool for the other side of the middle layer, the middle layer is foaming PET sheet material layer, and the upper epidermis and the layer are the wood and plastic composite bed of material.This PET wood plastic composites apparent property with sandwich structure is good, and density reduces and cost reduction, and mechanical performance is more preferable, and service life is elongated, and cushion performance is good, and easy to process and remodeling, designability are strong.It improves the comprehensive mechanical property of product and realizes the excellent use of bad material, increase added value of product, widened application of the wood plastic composite in architectural engineering and building subassembly field.
Description
Technical field
The invention belongs to field of compound material, are related to a kind of PET wood plastic composites, and in particular to one kind having sandwich knot
The PET wood plastic composites of structure.
Background technology
Wood-plastic material is prepared with thermoplastic and wood-fibred, bamboo fibre or agronomic crop fibre, recycling can be made full use of
Plastics and utilize agriculture and forestry organic waste material, with good ecological benefits also with preferable economic benefit.Discarded wood and plastic composite
Material can also re-start production through broken, form the utilization pattern of recycling, meet and develop a circular economy and build section
The about requirement of type society.Current wood plastic composite is with plastics mostly using log wood powder or wood-fibred through Compound Machining system
, the density of one side wood plastic composite is high, and transportation cost and price are all higher, are unfavorable for promoting the use of；On the other hand, existing
The bad defect of low, poor toughness, apparent effect with the presence of wood plastic composite intensity.
PET, i.e. polyethylene terephthalate, with good mechanical strength, temperature tolerance, wearability is good
Barrier property, low water imbibition and good toughness, than at this stage we produce wood moulding physical with resins such as PVC/PP/PE
Can be such as deformation, water imbibition, impact strength, scratch resistance etc. is much better.But since the melting temperature of PET is up to 250 DEG C,
Limit the production and application of PET wood plastic composites.
Invention content
The purpose of the invention is to overcome the shortcomings of above-mentioned background technology, providing a kind of low cost and high performance has
The PET wood plastic composites of sandwich structure.
To achieve the object of the present invention, the present invention has layered structure, including at least one middle layer, the middle layer
Side at least has there are one upper epidermis, and the other side of the middle layer also at least has there are one layer, and the middle layer is hair
PET sheet layers are steeped, the upper epidermis and the layer are the wood and plastic composite bed of material.
Preferably, include PET resin, wood powder, coupling agent, foaming agent, nucleating agent, plasticizer and carboxylic in the formula of this material
Sodium carboxymethylcellulose pyce, wherein：The weight percent of wood powder is 45~65%；The weight percent of PET resin is 15~39%；Hair
The weight percent of infusion is 4~8%；The weight percent of coupling agent is 1.5~4%.
Preferably, the plasticizer be one kind in dioctyl phthalate, acrylic acid, dibutyl phthalate or
It is a variety of；
Preferably, the foaming agent is the composite foamable agent of azodicarbonamide, bicarbonate and citric acid, wherein azo
The weight of diformamide is the 2~3% of PET wood plastic composites；
Preferably, the coupling agent is one or more of isocyanates, modified amido silane and vinyl silanes；
Preferably, the wood powder is dragon spruce wood powder, Poplar Powder, pine powder, straw powder, bagasse powder, powdered rice hulls and peanut
It is one or more in shell powder；
Preferably, the nucleating agent is in talcum powder, calcium carbonate, nano imvite, titanium dioxide and silica
It is one or more of；
Preferably, what the PET wood plastic composites were optional also includes blowing promotor, mould inhibitor or fire retardant；
Preferably, the one kind of the blowing promotor in nano zine oxide, zinc carbonate, citric acid, zinc acetate and glycerine
Or it is several.
Preferably, the wood powder is modified wood powder, and preparation method is as follows：A, the wood powder of 170 μm~190 μm of grain size is taken,
Through 95~105 DEG C of heat treatment dryings, acetone extract, drying for standby are then used；B, thermoset phenolic resin is taken, is diluted with water, then
Wood powder obtained by step A is added, wherein wood powder weight is 0.5~1 times of thermoset phenolic resin weight, in ultrasonic cleaner
25~35min of middle room temperature ultrasound, is then centrifuged for filtering, centrifugal rotational speed 1000r/min~1300r/min, and centrifugation time 3~
5min, the much filtrate after centrifugation are heat-treated 0.5~1h at 125 DEG C~130 DEG C up to modified wood powder.
Preferably, the foaming PET sheet material layer and the wood and plastic composite bed of material distinguish extruded technique and heat pressing process
Be made, on the basis of the obtained foaming PET sheet material layer and the wood and plastic composite bed of material, using the wood and plastic composite bed of material as
The upper epidermis and the layer carry out assembly using foaming PET sheet material layer as middle layer；Use the method for hot pressing will be wooden again
Plastic composite materials layer closes with foaming PET sheet material lamination and plank is made.
In the present invention, prepared by the foaming PET sheet material layer and the extruded technique of the wood and plastic composite bed of material, and described
Expressing technique is completed by PET wood plastic composite extrusion equipments.
In the present invention, there is the PET wood plastic composites extrusion equipment control device, main extrusion equipment, auxiliary to squeeze out
Equipment and the die head that main extrusion equipment links together with auxiliary extrusion equipment, the main extrusion equipment are set with power
Standby, transmission shaft, machine barrel, heating device, feed hopper, holder and platform base；The power-equipment is located on platform base, described
There is screw rod, described transmission shaft one end is connected with screw rod and the other end is fixedly connected with power-equipment, the heating dress in machine barrel
Set the periphery for being wrapped in machine barrel；The power-equipment is located at one end that main extrusion equipment is equipped with transmission shaft, and main extrusion equipment is another
One end is equipped with mixing section, melt zone, homopolymerization section, foaming agent injection section, foaming section, combination cooling section successively, in main extrusion equipment
Combination cooling section be externally connected with die head, the feed hopper is located at the mixing section of main extrusion equipment；
There is the auxiliary extrusion equipment dynamic power machine, drive link, screw thread interior bar, reaction tube, heating device, auxiliary material to enter bucket and branch
Frame, the auxiliary extrusion equipment are fixed by the bracket on the ground, and the dynamic power machine is connected by drive link with screw thread interior bar,
There is the reaction tube of package screw thread interior bar outside the screw thread interior bar, there is heating device, the auxiliary material to enter bucket outside the reaction tube
Close to the top of dynamic power machine one end on reaction tube；It is described auxiliary extrusion equipment and die head side connect, and make through
The auxiliary material of extrusion equipment processing is assisted to import die head；The main extrusion equipment also has foaming agent feed inlet, the foaming agent
Feed inlet is located at the foaming agent injection section of main extrusion equipment；The foaming agent and the plasticizer are injected into the foaming agent charging
Mouthful.
Preferably, the heating device includes upper arc heating plate and arc lower heating plate, the upper arc heating plate and
Arc lower heating plate is fixedly connected by connector and the machine barrel or the reaction tube；At least have on the heating device
There is heating socket, and there is temperature inspecting hole, heating charger, the heating charger and the control are equipped in heating spigot
Equipment is electrically connected；Hygrosensor is equipped at temperature inspecting hole, the hygrosensor is believed to control device transmission temperature
Number.
Preferably, there is the die head primary input end, auxiliary input port and output end, the primary input end to be set with main extrusion
Standby combination cooling section is connected；The primary input end of the die head has interface boss, and the interface boss includes annular matrix
And annular protrusion, the annular matrix and annular protrusion integrally connected, the annular matrix connect machine barrel, the annular protrusion connects
Pyramidal structure is connect, the be equipped with channels PET and the outside of the pyramidal structure inner hollow are equipped with chute and contraction front, the taper knot
It is arranged with the die head shell that can be combined closely outside structure, the inner hollow of the die head shell and having to output extreme direction tilts
The inner wall to become smaller, at least partly position does not contact with each other between the chute and the die head shell, the contraction front with it is described
It does not contact with each other between die head shell, forms the channels WPC between the chute, contraction front and the inner wall of the die head shell；Institute
It states at least partly position of the channels WPC on the outside of the channels PET and forms cladding；Have on the die head shell described auxiliary defeated
Entrance, the auxiliary input port are connected to form auxiliary material channel with the chute.
Preferably, the pyramidal structure includes nested multiple bodies, and includes at least the first bullet and the second taper
Body；There is the second chute and the second contraction front, between second chute and first bullet on second bullet
At least partly position does not contact with each other, and does not contact with each other between second contraction front and first bullet, and described second
The 2nd channels WPC are formed between chute, the second contraction front and the inner wall of first bullet；The auxiliary extrusion equipment is at least
It is two；Auxiliary input port at least two on the die head shell, and at least one auxiliary input port is bored with described first
Body and the connection of the second chute, form the second auxiliary material channel.
Compared with prior art, a kind of PET wood plastic composite apparent properties with sandwich structure of the invention are more preferable,
Density reduces therefore cost reduction, and macroscopically mechanical performance becomes more preferable, and service life is elongated, and cushion performance is good, is easy to add
Work and remodeling, designability are strong.Wood plastic boards are prepared with a kind of PET wood plastic composites with sandwich structure of the present invention,
It improves the comprehensive mechanical property of product and realizes the excellent use of bad material, increase added value of product, widened wood plastic composite
In the application of architectural engineering and building subassembly field, it can be used for preparing fast-assembling wall beautiful and generous, heat-insulated roof etc..
Description of the drawings
It, below will be to needed in the embodiment attached for the clearer technical solution for illustrating the embodiment of the present invention
Figure is briefly described, it should be understood that the following drawings has only shown certain embodiments of the present invention next, therefore is not construed as
Restriction to range without creative efforts, can also be according to this for those of ordinary skill in the art
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural schematic diagram of the PET wood plastic composites with sandwich structure in the present invention；
Fig. 2 is the overall schematic of PET wood plastic composites extrusion equipment in the present invention；
Fig. 3 is the side schematic view of PET wood plastic composites extrusion equipment in the present invention；
Fig. 4 is the stereoscopic schematic diagram of PET wood plastic composite extrusion equipments；
Fig. 5 is the fractionation schematic diagram of die head in PET wood plastic composite extrusion equipments；
Fig. 6 is the overall schematic of PET wood plastic composite extrusion equipments；
Fig. 7 is the fractionation schematic diagram of die head in the equipment that the present invention is used；
Fig. 8 is the fractionation schematic diagram of die head in present device.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other
Conflict is not constituted to can be combined with each other.
Embodiment 1：
Modified wood powder is prepared as follows：The straw powder for taking 170 μm~190 μm of grain size is heat-treated dryings through 100 DEG C,
Then acetone extract, drying for standby are used；It is diluted with water thermoset phenolic resin, above-mentioned wood powder is added, wood powder weight is heat curing type
0.8 times of phenolic resin weight, the room temperature ultrasound 30min in ultrasonic cleaner, is then centrifuged for filtering, centrifugal rotational speed 1200
R/min, centrifugation time 5min, the much filtrate after centrifugation are heat-treated 45min at 128 DEG C up to modified wood powder.Take gained innovation wood
Three parts of powder is warming up to 250 DEG C, 350 DEG C, 600 DEG C, heat preservation 30min is carried out respectively in the high pure nitrogen atmosphere of 100mL/min
Pyrolysis, detection Residual carbon, respectively 85.9%, 78.3%, 64.1%.
Embodiment 2：
Modified wood powder is prepared as follows：The Poplar Powder for taking 170 μm~190 μm of grain size is heat-treated dryings through 105 DEG C,
Then acetone extract, drying for standby are used；It is diluted with water thermoset phenolic resin, above-mentioned wood powder is added, wood powder weight is heat curing type
0.8 times of phenolic resin weight, the room temperature ultrasound 30min in ultrasonic cleaner, is then centrifuged for filtering, centrifugal rotational speed 1200
R/min, centrifugation time 5min, the much filtrate after centrifugation are heat-treated 45min at 128 DEG C up to modified wood powder.Take gained innovation wood
Three parts of powder is warming up to 250 DEG C, 350 DEG C, 600 DEG C, heat preservation 30min is carried out respectively in the high pure nitrogen atmosphere of 100mL/min
Pyrolysis, detection Residual carbon, respectively 87.5%, 76.1%, 63.5%.
Embodiment 3：
A kind of PET wood plastic composites with sandwich structure of the present embodiment, have layered structure, including it is at least one in
Interbed, the middle layer side at least have there are one upper epidermis, also at least there are one following tables for tool for the other side of the middle layer
Layer, the middle layer are foaming PET sheet material layer, and the upper epidermis and the layer are the wood and plastic composite bed of material.
It is fine comprising PET resin, wood powder, coupling agent, foaming agent, nucleating agent, plasticizer and carboxymethyl in the formula of this material
The plain sodium of dimension, wherein：The weight percent of wood powder is 45~65%；The weight percent of PET resin is 15~39%；Foaming agent
Weight percent is 4~8%；The weight percent of coupling agent is 1.5~4%.
The plasticizer is one or more in dioctyl phthalate, acrylic acid, dibutyl phthalate；
The foaming agent is the composite foamable agent of azodicarbonamide, bicarbonate and citric acid, wherein azodicarbonamide
Weight is the 2~3% of PET wood plastic composites；
The coupling agent is one or more of isocyanates, modified amido silane and vinyl silanes；
The wood powder is one kind in dragon spruce wood powder, Poplar Powder, pine powder, straw powder, bagasse powder, powdered rice hulls and peanut shell powder
Or it is a variety of；
The nucleating agent is selected from one or more of talcum powder, calcium carbonate, nano imvite, titanium dioxide and silica；
The PET wood plastic composites it is optional also include blowing promotor, mould inhibitor or fire retardant；
The blowing promotor is selected from one or more of nano zine oxide, zinc carbonate, citric acid, zinc acetate and glycerine.
Embodiment 4：
A kind of PET wood plastic composites with sandwich structure of the present embodiment, the foaming PET sheet material layer and the wood
Prepared by the extruded technique of plastic composite materials layer, and the expressing technique is completed by PET wood plastic composite extrusion equipments.
It please refers to Fig.1, Fig. 2, Fig. 3 and Fig. 4, it is multiple that an embodiment of the present invention provides a kind of PET wood mouldings with sandwich structure
Condensation material, the PET wood plastic composites extrusion equipment have control device 1, main extrusion equipment 2,3 and of auxiliary extrusion equipment
The die head 4 that main extrusion equipment 2 is linked together with auxiliary extrusion equipment 3, the main extrusion equipment 2 have power-equipment
21, transmission shaft 22, machine barrel 23, heating device 24, feed hopper 25, holder 27 and platform base 28；The power-equipment 21 is located at
On platform base 28, there is screw rod, 22 one end of the transmission shaft is connected with screw rod and the other end is set with power in the machine barrel 23
Standby 21 are fixedly connected, and the heating device 24 is wrapped in the periphery of machine barrel 23；The power-equipment 21 is located at main extrusion equipment 2 and sets
There is one end of transmission shaft 22, and 2 other end of main extrusion equipment is equipped with mixing section, melt zone, homopolymerization section, foaming agent injection successively
Section, foaming section, combination cooling section, die head 4, the feed hopper 25 are externally connected in the combination cooling section of main extrusion equipment 2
In the mixing section of main extrusion equipment 2；
The auxiliary extrusion equipment 3 has dynamic power machine 31, drive link 32, screw thread interior bar, reaction tube 33, heating device
24, auxiliary material enters bucket 34 and holder 27, the auxiliary extrusion equipment 3 are fixed on the ground by holder 27, the dynamic power machine 31
It is connected with screw thread interior bar by drive link 32, there is the reaction tube 33 of package screw thread interior bar, the reaction outside the screw thread interior bar
There is heating device 24, the auxiliary material to enter bucket 34 on reaction tube 33 close to the top of 31 one end of dynamic power machine outside cylinder 33；Institute
It states auxiliary extrusion equipment 3 to connect with the side of die head 4, and the auxiliary material through assisting extrusion equipment 3 to handle is made to import die head 4.
It should be noted that main extruder and being used cooperatively for subsidiary extruder through this embodiment can be produced with interlayer knot
The foaming PET wood plastic composite of structure, and multilayered structure can be generated, different materials can be added at different layers realizes that this is multiple
The multi-efficiency of condensation material.For example, matrix can be done using recycled plastic in innermost layer, it is improved in middle level using enhancing performance materials
Strength stability, outer layer are added pigment, can both reduce cost in this way and also have both aesthetics.
Wherein, the heating device 24 includes that upper arc heating plate 24A and arc lower heating plate 24B, the upper arc add
Backing 24A and arc lower heating plate 24B are fixedly connected by connector 24C and the machine barrel 23 or the reaction tube 33；
At least there is heating socket 241 on the heating device 24, and there is temperature inspecting hole 242, heating is equipped at heating socket 241
Charger 243, the heating charger 243 are electrically connected with the control device 1；Temperature sensing is equipped at temperature inspecting hole 242
Device 244, the hygrosensor 244 transmit temperature signal to the control device 1.It should be noted that through this embodiment
The heating device structure of offer can be completely embedded with the machine barrel of extruder, and the speed of heating is fast and uniform.
It is and aforementioned referring to Fig. 4, a kind of PET wood plastic composites with sandwich structure provided in an embodiment of the present invention
Unlike embodiment, the control device 1 includes at least the first control cabinet 11 and the second control cabinet 12, first control
Case 11 controls the heating temperature of heating device 24 on the power-equipment 21 and main extrusion equipment 2 of main extrusion equipment 2, second control
The heating temperature of heating device 24 on the dynamic power machine 31 and auxiliary extrusion equipment 3 of the control of case 12 auxiliary extrusion equipment 3 processed；It is described
Transmission mouth 111 and aviation plug 112 are all had on the outer wall side of first control cabinet 11 and the second control cabinet 12, described first
The outside of control cabinet 11 and the second control cabinet 12 all has temperature indicator, temperature control burtons, power displays, power supply control
The control of switch and power-equipment switchs, and the temperature indicator and temperature control burtons are corresponded with aviation plug.It needs
Illustrate, the control device provided through this embodiment can avoid the leakage of electric wire, realize the effect neatly manipulated well.In addition
Operation and the heated condition of power-equipment and heating device can be accurately controlled by the way that some displays and control button are arranged.
Embodiment 5：
It please refers to Fig.1, Fig. 2, Fig. 3, Fig. 5 and Fig. 6, a kind of PET wood with sandwich structure provided in an embodiment of the present invention
Plastic composite materials, unlike aforementioned embodiments, the platform base 28 is stepped, and the power-equipment 21 is logical
It crosses screw or welding manner is fixed on the 28 higher position of stepped platform pedestal, it is lower in the stepped platform pedestal 28
Position fixes other positions of main extrusion equipment 2 by holder 27；The power-equipment 21 is motor or hydraulic motor.It needs
Illustrate, can steadily fix main extruder using the platform base of this structure enhances its safety.
Embodiment 6：
Please refer to Fig. 4, Fig. 6, Fig. 7 and Fig. 8, another PET wood mouldings with sandwich structure provided in an embodiment of the present invention
There is primary input end 4a, auxiliary input port 4b and output end 4c, the primary input end 4a to be squeezed with main for composite material, the die head 4
The combination cooling section for going out equipment 2 is connected；The primary input end 4a of the die head 4 has interface boss 41, the interface boss 41
Including annular matrix 411 and annular protrusion 412, the annular matrix 411 and 412 integrally connected of annular protrusion, the annular base
Body 411 connects machine barrel 23, and the annular protrusion 412 connects pyramidal structure 42, and 42 inner hollow of the pyramidal structure is equipped with PET
Channel 421 and outside are equipped with chute 422 and contraction front 423, and the die head that can be combined closely is arranged with outside the pyramidal structure 42
Shell 43, the inner hollow of the die head shell 43 and the inner wall 431 to become smaller to the directions output end 4c with inclination, the stream
At least partly position does not contact with each other between slot 422 and the die head shell 43, the contraction front 423 and the die head shell 43
Between do not contact with each other, WPC channels are formed between the chute 422, contraction front 423 and the inner wall 431 of the die head shell 43
424；The channels WPC 424 form cladding in at least partly position in 421 outside of the channels PET；On the die head shell 43
With the auxiliary input port 4b, the auxiliary input port 4b is connected to form auxiliary material channel 432 with the chute 422.It needs to illustrate
It is die head unique structure provided in this embodiment, can be quickly and easily squeezed out main extruder and auxiliary using the die head
Machine links together.Channel 424 is the runner of a subsidiary extruder, and the substance of extrusion first passes through the channels PET 421, then
Using channel 424, the substance come out by the channels PET 421 can be coated on interior reality by the substance in channel 424 out
Existing double-layer structure.
Wherein, the pyramidal structure 42 includes nested multiple bodies, and including at least the cones of the first bullet 42a and second
Body 42b；There is the second chute 425 and the second contraction front 426, second chute 425 and institute on the second bullet 42b
At least partly position does not contact with each other between stating the first bullet 42a, second contraction front 426 and first bullet
It does not contact with each other between 42a, between second chute 425, the second contraction front 426 and the inner wall of the first bullet 42a
Form the 2nd channels WPC 427；The auxiliary extrusion equipment 3 at least two；Auxiliary input port 4b on the die head shell 43
At least two, and at least one auxiliary input port 4b is connected to the first cone 42a and the second chute 425, form the
Two auxiliary material channels 433.It should be noted that the second chute 425 through this embodiment and the 2nd channels WPC 427 can will be another
One subsidiary extruder is connected on entire runner, realizes the cladding layer by layer of composite material.
Referring to Fig. 4, an embodiment of the present invention provides a kind of PET wood plastic composites with sandwich structure.The PET
Wood plastic composite extrusion equipment is unlike any specific implementation mode in embodiment 4 and embodiment 5, the die head
Close to the side of the output end 4c there is die orifice body 45, the die orifice body 45 closely to be tied with the die head shell 43 on shell 43
It closes, and there is cladding channel 451 between the pyramidal structure 42；There is hollow spindle mould tongue in the channels PET 421
Body 46,46 a part of lateral wall of spindle mould tongue body and 42 inner wall of the pyramidal structure are closely coupled；The die orifice body 45
It is inside also embedded with die lip body 47, it is logical with clad between the die lip body 47 and the spindle mould tongue body 46 and die orifice body 45
Road 48；At the output end 4c of the die head 4 be equipped with hollow bathtub construction 49, the hollow bathtub construction 49 with it is described
Die orifice body 45 is connected and is defined to the position of the die lip body 47；The mould tongue body 46 and the die lip body 47 can roots
According to being replaced.It should be noted that structure provided in this embodiment is accomplished that main extruder and subsidiary extruder
Substance out is imported into an entirety and the process that is cooled and shaped.
Referring to Fig. 8, an embodiment of the present invention provides a kind of PET wood plastic composites with sandwich structure.The PET
Wood plastic composite extrusion equipment, unlike any specific implementation mode in embodiment 5 and embodiment 6, hollow is described
First bullet 42a is connected with the die head shell 43, has circular ring shape protrusion 428 in the end of the first bullet 42a,
The circular ring shape protrusion 428 is connect with the annular protrusion 412；The medium position on the first inclined-planes bullet 42a and the die head
There is duct c between the inclined-plane of shell 43；That be connected with the first bullet 42a is hollow second bullet 42b, described
The inclined-plane of second bullet 42b is gentle compared with the first bullet 42a's, has circular ring shape in the end of the second bullet 42b
Recess has duct between the middle and upper part position and the inclined-plane of the first bullet 42a on the inclined-planes the second bullet 42b
d；There is the spindle mould tongue body 46 in the inside of the second bullet 42b；The second bullet 42b is close to output end
The inner wall of 4c has a gradually wide inclined-plane, and the spindle mould tongue body 46 has long side end and a short end, the gradually wide inclined-plane with
The long side end of the spindle mould tongue body 46 is in close contact.It should be noted that duct c and duct d are subsidiary extruder
Runner.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of PET wood plastic composites with sandwich structure, it is characterised in that have layered structure, including it is at least one in
Interbed, the middle layer side at least have there are one upper epidermis, also at least there are one following tables for tool for the other side of the middle layer
Layer, the middle layer are foaming PET sheet material layer, and the upper epidermis and the layer are the wood and plastic composite bed of material.
2. a kind of PET wood plastic composites with sandwich structure according to claim 1, it is characterised in that this material
Comprising PET resin, wood powder, coupling agent, foaming agent, nucleating agent, plasticizer and sodium carboxymethylcellulose in formula, wherein：Wood powder
Weight percent be 45~65%；The weight percent of PET resin is 15~39%；The weight percent of foaming agent be 4~
8%；The weight percent of coupling agent is 1.5~4%.
3. a kind of PET wood plastic composites with sandwich structure according to claim 2, it is characterised in that the plasticising
Agent is one or more in dioctyl phthalate, acrylic acid, dibutyl phthalate；
The foaming agent is the composite foamable agent of azodicarbonamide, bicarbonate and citric acid, wherein azodicarbonamide
Weight is the 2~3% of PET wood plastic composites；
The coupling agent is one or more of isocyanates, modified amido silane and vinyl silanes；
The wood powder is one kind in dragon spruce wood powder, Poplar Powder, pine powder, straw powder, bagasse powder, powdered rice hulls and peanut shell powder
Or it is a variety of；
The nucleating agent is selected from one or more of talcum powder, calcium carbonate, nano imvite, titanium dioxide and silica；
The PET wood plastic composites it is optional also include blowing promotor, mould inhibitor or fire retardant；
The blowing promotor is selected from one or more of nano zine oxide, zinc carbonate, citric acid, zinc acetate and glycerine.
4. a kind of PET wood plastic composites with sandwich structure according to claim 2, it is characterised in that the wood powder
For modified wood powder, preparation method is as follows：
A, then the wood powder for taking 170 μm~190 μm of grain size uses acetone extract, drying for standby through 95~105 DEG C of heat treatment dryings；
B, thermoset phenolic resin is taken, is diluted with water, wood powder obtained by step A is added, wherein wood powder weight is heat curing type phenolic aldehyde
0.5~1 times of weight resin, 25~35min of room temperature ultrasound in ultrasonic cleaner, is then centrifuged for filtering, centrifugal rotational speed
1000r/min~1300r/min, 3~5min of centrifugation time, the much filtrate after centrifugation is heat-treated 0.5 at 125 DEG C~130 DEG C~
1h is up to modified wood powder.
5. a kind of PET wood plastic composites with sandwich structure according to any one of claim 1-4, feature
It is that the foaming PET sheet material layer and the wood and plastic composite bed of material distinguish extruded technique and heat pressing process is made, is being made
On the basis of the foaming PET sheet material layer and the wood and plastic composite bed of material, using the wood and plastic composite bed of material as the upper epidermis
With the layer, assembly is carried out using foaming PET sheet material layer as middle layer；Use the method for hot pressing by wood plastic composite again
Layer closes with foaming PET sheet material lamination and plank is made.
6. a kind of PET wood plastic composites with sandwich structure according to any one of claim 1-4, feature
It is prepared by the extruded technique of the foaming PET sheet material layer and the wood and plastic composite bed of material, and the expressing technique passes through
PET wood plastic composite extrusion equipments are completed.
7. a kind of PET wood plastic composites with sandwich structure according to claim 6, it is characterised in that the PET
Wood plastic composite extrusion equipment have control device, main extrusion equipment, auxiliary extrusion equipment and by main extrusion equipment with auxiliary
The die head that extrusion equipment links together, the main extrusion equipment have power-equipment, transmission shaft, machine barrel, heating device, into
Hopper, holder and platform base；The power-equipment is located on platform base, has screw rod, the transmission shaft in the machine barrel
One end is connected with screw rod and the other end is fixedly connected with power-equipment, and the heating device is wrapped in the periphery of machine barrel；It is described dynamic
Power equipment be located at main extrusion equipment be equipped with transmission shaft one end, and the main extrusion equipment other end successively be equipped with mixing section, melt zone,
Homopolymerization section, foaming agent injection section, foaming section, combination cooling section, die head is externally connected in the combination cooling section of main extrusion equipment,
The feed hopper is located at the mixing section of main extrusion equipment；
There is the auxiliary extrusion equipment dynamic power machine, drive link, screw thread interior bar, reaction tube, heating device, auxiliary material to enter bucket and branch
Frame, the auxiliary extrusion equipment are fixed by the bracket on the ground, and the dynamic power machine is connected by drive link with screw thread interior bar,
There is the reaction tube of package screw thread interior bar outside the screw thread interior bar, there is heating device, the auxiliary material to enter bucket outside the reaction tube
Close to the top of dynamic power machine one end on reaction tube；It is described auxiliary extrusion equipment and die head side connect, and make through
The auxiliary material of extrusion equipment processing is assisted to import die head；The main extrusion equipment also has foaming agent feed inlet, the foaming agent
Feed inlet is located at the foaming agent injection section of main extrusion equipment；The foaming agent and the plasticizer are injected into the foaming agent charging
Mouthful.
8. a kind of PET wood plastic composites with sandwich structure according to claim 7, which is characterized in that described to add
Thermal includes upper arc heating plate and arc lower heating plate, and the upper arc heating plate and arc lower heating plate pass through connector
It is fixedly connected with the machine barrel or the reaction tube；At least there is heating socket on the heating device, and there is temperature
Inspecting hole is equipped with heating charger in heating spigot, and the heating charger is electrically connected with the control device；In temperature inspecting hole
Place is equipped with hygrosensor, and the hygrosensor transmits temperature signal to the control device.
9. a kind of PET wood plastic composites with sandwich structure according to claim 8, which is characterized in that the mould
Having head has primary input end, auxiliary input port and output end, and the primary input end is connected with the combination cooling section of main extrusion equipment；Institute
The primary input end of die head is stated with interface boss, the interface boss includes annular matrix and annular protrusion, the annular base
Body and annular protrusion integrally connected, the annular matrix connect machine barrel, and the annular protrusion connects pyramidal structure, the taper knot
The be equipped with channels PET and the outside of structure inner hollow are equipped with chute and contraction front, are arranged with and can closely tie outside the pyramidal structure
The die head shell of conjunction, the inner hollow of the die head shell and the inner wall to become smaller to output extreme direction with inclination, the chute
At least partly position does not contact with each other between the die head shell, not phase mutual connection between the contraction front and the die head shell
It touches, forms the channels WPC between the chute, contraction front and the inner wall of the die head shell；The channels WPC are logical in the PET
At least partly position on the outside of road forms cladding；There is the auxiliary input port, the auxiliary input port and institute on the die head shell
Chute is stated to be connected to form auxiliary material channel.
10. a kind of PET wood plastic composites with sandwich structure according to claim 9, which is characterized in that the cone
Shape structure includes multiple bodies of nesting, and includes at least the first bullet and the second bullet；Have on second bullet
There are the second chute and the second contraction front, at least partly position not phase mutual connection between second chute and first bullet
It touches, does not contact with each other between second contraction front and first bullet, second chute, the second contraction front and described
The 2nd channels WPC are formed between the inner wall of first bullet；The auxiliary extrusion equipment at least two；On the die head shell
Auxiliary input port at least two, and at least one auxiliary input port is connected to first cone and the second chute, is formed
Second auxiliary material channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370141.0A CN108715074A (en) | 2018-04-24 | 2018-04-24 | A kind of PET wood plastic composites with sandwich structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810370141.0A CN108715074A (en) | 2018-04-24 | 2018-04-24 | A kind of PET wood plastic composites with sandwich structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108715074A true CN108715074A (en) | 2018-10-30 |
Family
ID=63899063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810370141.0A Pending CN108715074A (en) | 2018-04-24 | 2018-04-24 | A kind of PET wood plastic composites with sandwich structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108715074A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331851A (en) * | 2020-03-12 | 2020-06-26 | 徐州工业职业技术学院 | Ultrasonic welding method for wood-plastic composite material |
| CN113977991A (en) * | 2021-11-16 | 2022-01-28 | 山东恒源兵器科技股份有限公司 | Carbon fiber wing internal foaming forming method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491210Y (en) * | 2001-08-09 | 2002-05-15 | 廖宪章 | Plastic extruder able to clad different material |
| CN101033317A (en) * | 2006-05-24 | 2007-09-12 | 卓玉国 | Preparation of multifunctional wood-plastic composite material |
| CN102431263A (en) * | 2011-09-16 | 2012-05-02 | 东北林业大学 | Lightweight high-strength sandwich-structured wood-plastic composite sheet material and manufacture method for one-step molding of same |
| CN106515156A (en) * | 2016-10-27 | 2017-03-22 | 东北林业大学 | Extruded sandwich structure wood-plastic composite material and manufacturing method thereof |
-
2018
- 2018-04-24 CN CN201810370141.0A patent/CN108715074A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491210Y (en) * | 2001-08-09 | 2002-05-15 | 廖宪章 | Plastic extruder able to clad different material |
| CN101033317A (en) * | 2006-05-24 | 2007-09-12 | 卓玉国 | Preparation of multifunctional wood-plastic composite material |
| CN102431263A (en) * | 2011-09-16 | 2012-05-02 | 东北林业大学 | Lightweight high-strength sandwich-structured wood-plastic composite sheet material and manufacture method for one-step molding of same |
| CN106515156A (en) * | 2016-10-27 | 2017-03-22 | 东北林业大学 | Extruded sandwich structure wood-plastic composite material and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 胡淑宜等: "酚醛树脂浸渍木粉DTA/TG 曲线解析", 《林产化学与工业》 * |
| 董祥忠: "《现代塑料成型工程》", 30 September 2009, 国防工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331851A (en) * | 2020-03-12 | 2020-06-26 | 徐州工业职业技术学院 | Ultrasonic welding method for wood-plastic composite material |
| CN113977991A (en) * | 2021-11-16 | 2022-01-28 | 山东恒源兵器科技股份有限公司 | Carbon fiber wing internal foaming forming method |
| CN113977991B (en) * | 2021-11-16 | 2024-05-24 | 山东恒源兵器科技股份有限公司 | Carbon fiber wing inner foaming forming method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103012899B (en) | High impact strength wood-plastic composite material as well as preparation method and application thereof | |
| CN104130529B (en) | A kind of high rigid, low density PVC wood plastic foamed board and preparation method thereof | |
| CN102991046B (en) | Plastic steel sandwich board of a kind of high-strength light and preparation method thereof | |
| CN106898711A (en) | Battery bag lower house, battery bag and vehicle | |
| KR102080268B1 (en) | Double extruded multiple holes panel manufacturing device of outer join synthetic resins | |
| CN103568396A (en) | Light-weight and high-strength thermoplastic composite material sandwich board and production method thereof | |
| CN105965846A (en) | Continuous co-extrusion self-reinforcing equipment and continuous co-extrusion self-reinforcing method for biomass wood plastic foaming floor | |
| CN108715074A (en) | A kind of PET wood plastic composites with sandwich structure | |
| CN103935044B (en) | Preparation of composite material by scanning prepreg through laser | |
| CN103758339A (en) | Wood plastic composite material veneering plywood and manufacturing method and application thereof | |
| CN102441974A (en) | Production method of aluminum-plastic wood fiber composite profile | |
| CN108517131A (en) | A kind of foaming PET wood plastic composite and application thereof | |
| RU2607653C2 (en) | Composite profile and preparation method thereof | |
| CN107383517A (en) | A kind of plastic plate, section bar and production method | |
| CN107901511A (en) | A kind of wood-plastic co-extrusion plate and preparation method thereof | |
| US20060249216A1 (en) | Co-injected pipe fitting | |
| CN104018665B (en) | A kind of building template material and preparation method thereof | |
| CN110437521A (en) | A kind of expansion type core-shell structure wood plastic composite and preparation method | |
| CN108559292A (en) | A kind of Wood Plastics Composite Product with PET sandwich structures | |
| CN108530847A (en) | A kind of preparation method of PET wood plastic composites | |
| CN103507279B (en) | A kind of ripple hollow sheeting and preparation method thereof | |
| CN103144270B (en) | Method of preparing high interface bonding intensity wood-plastic composite in co-extrusion mode | |
| CN107266899A (en) | A kind of wood-plastic composite floor and preparation method thereof | |
| CN108608633B (en) | Operation method of PET wood-plastic composite material manufacturing equipment | |
| CN105415839A (en) | Polyvinyl chloride co-extrusion wood-plastic plate and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181030 |