CN105965846B - A kind of continuous co-extrusion self-reinforcing device and method of biomass wood-plastic foamed floor - Google Patents
A kind of continuous co-extrusion self-reinforcing device and method of biomass wood-plastic foamed floor Download PDFInfo
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- CN105965846B CN105965846B CN201610376632.7A CN201610376632A CN105965846B CN 105965846 B CN105965846 B CN 105965846B CN 201610376632 A CN201610376632 A CN 201610376632A CN 105965846 B CN105965846 B CN 105965846B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 76
- 239000004033 plastic Substances 0.000 title claims abstract description 28
- 229920003023 plastic Polymers 0.000 title claims abstract description 28
- 239000002028 Biomass Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005187 foaming Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 7
- 238000005728 strengthening Methods 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- -1 Polypropylene Polymers 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- DYAHQFWOVKZOOW-UHFFFAOYSA-N Sarin Chemical compound CC(C)OP(C)(F)=O DYAHQFWOVKZOOW-UHFFFAOYSA-N 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 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 3
- 239000004088 foaming agent Substances 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 2
- 241000209094 Oryza Species 0.000 description 3
- 229920001587 Wood-plastic composite Polymers 0.000 description 3
- 239000011155 wood-plastic composite Substances 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B29C48/025—General arrangement or layout of plant
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Floor Finish (AREA)
Abstract
A kind of continuous co-extrusion self-reinforcing equipment of biomass wood-plastic foamed floor, including the conical double-screw extrusion main unit set gradually, co-extruding mould, taper mouth mold and dragger, it is characterised in that：Extrusion subsidiary engine is further included, the extrusion subsidiary engine is arranged on the top of the extrusion main unit, and the angle β between the extrusion subsidiary engine and the extrusion main unit is 20 ° 60 °, and the extrusion ratio R of the taper mouth mold is 2 10, and extrusion cone angle is 15 ° 60 °, wherein：S1：Taper mouth mold inlet end cross section accumulates；S0：Taper mouth mold port of export cross-sectional area；S：Sandwich layer floor cross-sectional area.The continuous co-extrusion self-reinforcing equipment of the present invention stretches the top layer of co-extrusion product by setting taper mouth mold and dragger, so that it produces plastic deformation, improves the tensile strength and ageing-resistant performance of product, extends product service life；Sandwich layer floor can be mitigated product weight, be improved the performances such as nail-holding ability, the impact resistance of product using the method for foaming at the same time.
Description
Technical field
The present invention relates to a kind of extrusion equipment, a kind of continuous co-extrusion self-reinforcing of specially biomass wood-plastic foamed floor is set
Standby and method.
Background technology
Biomass wood plastic composite is by wood powder（Sawdust, timber, branch）And agricultural residue（Rice husk, stalk, shell）
And after other plant fiber crushes, be added to as filler in thermoplastic, by extrude, inject, be molded etc. it is traditional
A kind of new material prepared by plastic processing method, it has the double grading of timber and plastics concurrently, for timber
With good corrosion resistance, water resistance and mechanical property, and the dimensional stability of product is then improved for plastics
And heat endurance, therefore have very wide application prospect.But common wood plastic composite is big, resistance to old there is also density
, easily there is serious phenomena such as fading and being broken in use in the shortcomings of change poor performance, impact strength is low, nail-holding ability is poor.
Therefore need to search out a kind of extrusion equipment of biomass wood-plastic foamed floor and method, it is difficult to solve above-mentioned technology
Topic, reaches reinforcing material performance, reduces the purpose of production cost.
The content of the invention
The purpose of the present invention is exactly to solve the above-mentioned problems in the prior art, there is provided a kind of biomass Wood-plastic foam
The continuous co-extrusion self-reinforcing device and method of plate.
Technical scheme is as follows：
A kind of continuous co-extrusion self-reinforcing equipment of biomass wood-plastic foamed floor, including the conical double-screw set gradually squeeze
Go out host, co-extruding mould, taper mouth mold and dragger, it is characterised in that：Extrusion subsidiary engine is further included, the extrusion subsidiary engine is arranged on
The top of the extrusion main unit, the angle β between the extrusion subsidiary engine and the extrusion main unit are 20 ° -60 °, the conical opening
The extrusion ratio R of mould is 2-10, and extrusion cone angle is 15 ° -60 °, wherein：
S1：Taper mouth mold inlet end cross section accumulates；S0：Taper mouth mold port of export cross-sectional area；S：Sandwich layer floor cross section
Product.
A kind of continuous co-extrusion self-strengthening method of biomass wood-plastic foamed floor, comprises the following steps：
(1) base material material is added in conical double-screw extrusion main unit；
(2) top layer material is added in subsidiary engine is extruded, the extrusion subsidiary engine is co-extrusion extruder；
(3) base material material and top layer material are after screw rod melting shearing, into co-extruding mould, in base material material
One layer of top layer material of surface co-extrusion, forms co-extrusion germule；
(4) and then above-mentioned co-extrusion germule is passed sequentially through taper mouth mold and dragger so that top layer material extruding force with
It is plastically deformed under the collective effect of tractive force；
(5) cool down, obtain biomass wood-plastic foamed floor after sizing.
Base material material is biomass composite in the step (1), and the mass fraction of its component and each component is as follows：
20-40 parts of PP or PE；40-60 parts of wood powders or bamboo powder or powdered rice hulls；3-10 parts of calcium carbonate or mica or talcum powder；1-5 parts of Malaysias
Anhydride-grafted polypropylene；1-2 parts of lubricants；1-3 parts of foaming agents.
The component of top layer material described in the step (2) and the mass fraction of each component are as follows：70-85 parts of PE or sarin
Resin；3-10 parts of inorganic toners；1-6 parts of nano-calcium carbonates；1-6 parts of cenospheres；1-8 parts of carbon fibers, the wherein melting of PE refer to
Number<1.
Co-extruding mould described in the step (3) is from left to right divided into two heating zones, and wherein one temperature of heating zone is set
For 165 DEG C -180 DEG C, two temperature of heating zone is set as 155 DEG C -170 DEG C, skin depth 1-2mm.
Skin depth is 0.2-1mm in the step (4), and three temperature of heating zone of taper mouth mold is set as 150 DEG C -160
℃。
As can be seen from the above technical solutions, continuous co-extrusion self-reinforcing device and method of the invention cause top layer material to exist
Taper mouth mold is continued through under extruding force and the collective effect of tractive force, plastic deformation on a large scale is produced, realizes interior molecules
Chain height-oriented arrangement vertically, finally makes the performance of product be greatly improved.The performance of end article and taper mouth mold
Extrusion ratio R sizes it is related.In general, the inlet area of taper mouth mold is certain, extrusion ratio is bigger, and discharge area is smaller, thing
The deformation of material is more obvious, and the tensile strength and modulus of product are higher；Extrusion ratio is smaller, and discharge area is bigger, the deformation of material
Gentler, plastic deformation is more uniform, and the tensile strength and modulus of product are lower.Wherein taper mouth mold can be with disassembled and assembled freely more
Change, so as to provide facility to produce the co-extrusion wood-plastic composite floor of different extrusion ratios.The selection for extruding cone angle can be to taper mouth mold
Length produce certain influence.It is small to extrude cone angle, material deformation is gentle, and plastic deformation is uniform；If it is big to extrude cone angle, material
Deformation is violent, and the plastic deformation time is short, it is possible to causes material to deform non-uniform phenomenon.By setting taper mouth mold and traction
Machine, and being stretched to the top layer of co-extrusion product, so that it produces plastic deformation, improves the tensile strength of product and ageing-resistant
Performance, extends product service life.
Brief description of the drawings
Fig. 1 is a kind of knot of the continuous co-extrusion self-reinforcing equipment of biomass wood-plastic foamed floor provided in an embodiment of the present invention
Structure schematic diagram.
Fig. 2 is a kind of structure diagram of taper mouth mold provided in an embodiment of the present invention.
Embodiment
The present invention is further described with reference to specific legend.
A kind of continuous co-extrusion self-reinforcing equipment of biomass wood-plastic foamed floor, including the conical double-screw set gradually squeeze
Go out host 1, co-extruding mould 3, taper mouth mold 4 and dragger 7, further include extrusion subsidiary engine 2, the extrusion subsidiary engine 2 is arranged on described
The vertical direction of conical double-screw extrusion main unit 1, it is described extrusion subsidiary engine 2 and the extrusion main unit 1 between angle β for 20 °-
60 °, the extrusion ratio R of the taper mouth mold 4 is 2-10, and extrusion cone angle is 15 ° -60 °, wherein：
S1：Taper mouth mold inlet end cross section accumulates；S0：Taper mouth mold port of export cross-sectional area；S：Sandwich layer floor cross section
Product.
A kind of continuous co-extrusion self-strengthening method of biomass wood-plastic foamed floor, comprises the following steps：
(1) base material material 6 is added in conical double-screw extrusion main unit 1；
(2) top layer material 5 is added in subsidiary engine 2 is extruded, the extrusion subsidiary engine 2 is co-extrusion extruder；
(3) base material material 6 and top layer material 5 are after screw rod melting shearing, into co-extruding mould 3, in base material material
6 one layer of top layer material 5 of surface co-extrusion, forms co-extrusion germule；
(4) and then above-mentioned co-extrusion germule is made to pass sequentially through taper mouth mold 4 and dragger 7 so that top layer material 5 is extruding
It is plastically deformed under power and the collective effect of tractive force；
(5) cool down, obtain biomass wood-plastic foamed floor after sizing.
Base material material is biomass composite in the step (1), and the mass fraction of its component and each component is as follows：
20-40 parts of PP or PE；40-60 parts of wood powders or bamboo powder or powdered rice hulls；3-10 parts of calcium carbonate or mica or talcum powder；1-5 parts of Malaysias
Anhydride-grafted polypropylene；1-2 parts of lubricants；1-3 parts of foaming agents.
The component of top layer material described in the step (2) and the mass fraction of each component are as follows：70-85 parts of PE or sarin
Resin；3-10 parts of inorganic toners；1-6 parts of nano-calcium carbonates；1-6 parts of cenospheres；1-8 parts of carbon fibers, the wherein melting of PE refer to
Number<1.
Co-extruding mould 3 is from left to right divided into two heating zones described in the step (3), and wherein one 8 temperature of heating zone is set
It is set to 165 DEG C -180 DEG C, 29 temperature of heating zone is set as 155 DEG C -170 DEG C, skin depth 1-2mm.
Skin depth is 0.2-1mm in the step (4), 3 10 temperature of heating zone of taper mouth mold be set as 150 DEG C-
160℃。
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail in good embodiment, it will be understood by those of ordinary skill in the art that, can be to the skill of the present invention
Art scheme technical scheme is modified or replaced equivalently, without departing from the objective and scope of technical solution of the present invention, it is encompassed by this hair
Among bright right.
Claims (6)
1. a kind of continuous co-extrusion self-reinforcing equipment of biomass wood-plastic foamed floor, including the conical double-screw extrusion set gradually
Host, co-extruding mould, taper mouth mold and dragger, it is characterised in that：Extrusion subsidiary engine is further included, the extrusion subsidiary engine is arranged on institute
The top of extrusion main unit is stated, the angle β between the extrusion subsidiary engine and the extrusion main unit is 20 ° -60 °, the taper mouth mold
Extrusion ratio R be 2-10, extrusion cone angle be 15 ° -60 °, wherein：
S1：Taper mouth mold inlet end cross section accumulates；S0：Taper mouth mold port of export cross-sectional area；S：Sandwich layer floor cross-sectional area.
A kind of 2. continuous co-extrusion self-strengthening method of biomass wood-plastic foamed floor, using the biomass wood described in claim 1
The continuous co-extrusion self-reinforcing equipment on modeling foaming floor carries out, and comprises the following steps：
(1) base material material is added in conical double-screw extrusion main unit；
(2) top layer material is added in subsidiary engine is extruded, the extrusion subsidiary engine is co-extrusion extruder；
(3) base material material and top layer material are after screw rod melting shearing, into co-extruding mould, on the surface of base material material
One layer of top layer material of co-extrusion, forms co-extrusion germule；
(4) and then above-mentioned co-extrusion germule is made to pass sequentially through taper mouth mold and dragger so that top layer material is in extruding force and traction
It is plastically deformed under the collective effect of power；
(5) cool down, obtain biomass wood-plastic foamed floor after sizing.
3. a kind of continuous co-extrusion self-strengthening method of biomass wood-plastic foamed floor according to claim 2, its feature exist
In：Base material material is biomass composite in the step (1), and the mass fraction of its component and each component is as follows：20-40 parts
PP or PE；40-60 parts of wood powders or bamboo powder or powdered rice hulls；3-10 parts of calcium carbonate or mica or talcum powder；1-5 parts of maleic anhydride grafting
Polypropylene；1-2 parts of lubricants；1-3 parts of foaming agents.
4. a kind of continuous co-extrusion self-strengthening method of biomass wood-plastic foamed floor according to claim 2, its feature exist
In：The component of top layer material described in the step (2) and the mass fraction of each component are as follows：70-85 parts of PE or sarin resin；
3-10 parts of inorganic toners；1-6 parts of nano-calcium carbonates；1-6 parts of cenospheres；1-8 parts of carbon fibers, the wherein melt index of PE<1.
5. a kind of continuous co-extrusion self-strengthening method of biomass wood-plastic foamed floor according to claim 2, its feature exist
In：Co-extruding mould is divided into two heating zones from material inlet to material outlet described in the step (3), is followed successively by heating zone
First, heating zone two, wherein one temperature of heating zone are set as 165 DEG C -180 DEG C, and two temperature of heating zone is set as 155 DEG C -170 DEG C,
Skin depth is 1-2mm.
6. a kind of continuous co-extrusion self-strengthening method of biomass wood-plastic foamed floor according to claim 2, its feature exist
In：Skin depth is 0.2-1mm in the step (4), sets heating zone three at taper mouth mold, its temperature be set as 150 DEG C-
160℃。
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| CN201610376632.7A CN105965846B (en) | 2016-05-31 | 2016-05-31 | A kind of continuous co-extrusion self-reinforcing device and method of biomass wood-plastic foamed floor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102018201579A1 (en) * | 2018-02-01 | 2019-08-01 | Greiner Extrusion Group Gmbh | WPC extrusion profile and apparatus and method for its production |
| CN108530847B (en) * | 2018-04-24 | 2021-08-20 | 华南农业大学 | Preparation method of PET wood-plastic composite material |
| CN109081998A (en) * | 2018-07-10 | 2018-12-25 | 浙江琛盛新材料科技有限公司 | A kind of co-extrusion material factory formula and technique |
| CN109354772A (en) * | 2018-10-26 | 2019-02-19 | 安庆市悦发管业有限公司 | A kind of preparation method of uvioresistant PE coil pipe material |
| CN113459454B (en) * | 2021-06-09 | 2022-03-11 | 安徽森泰木塑科技地板有限公司 | Reinforced foamed floor, extrusion die and equipment set for preparing same |
| CN113580464A (en) * | 2021-07-29 | 2021-11-02 | 无锡市博宇塑机有限公司 | Foaming extruder and using method thereof |
| 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 |
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| CN205685695U (en) * | 2016-05-31 | 2016-11-16 | 衢州学院 | A kind of continuous co-extrusion self-reinforcing equipment of biomass wood-plastic foamed floor |
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| CN205685695U (en) * | 2016-05-31 | 2016-11-16 | 衢州学院 | A kind of continuous co-extrusion self-reinforcing equipment of biomass wood-plastic foamed floor |
Non-Patent Citations (1)
| Title |
|---|
| 挤出比对固态挤出成型自增强木塑复合材料性能的影响;蔡建臣;《工程塑料应用》;20130530;38-41 * |
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Denomination of invention: A continuous co extrusion self strengthening equipment and method for biomass wood plastic foam flooring Granted publication date: 20180515 Pledgee: Zhejiang Changshan Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang Qianlong New Material Co.,Ltd. Registration number: Y2024330000594 |