CN106147078A - A kind of enzyme modified Wooden powder/PVC composite material - Google Patents
A kind of enzyme modified Wooden powder/PVC composite material Download PDFInfo
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- CN106147078A CN106147078A CN201610612611.0A CN201610612611A CN106147078A CN 106147078 A CN106147078 A CN 106147078A CN 201610612611 A CN201610612611 A CN 201610612611A CN 106147078 A CN106147078 A CN 106147078A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- 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
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
-
- 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
- B29C2948/9258—Velocity
-
- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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
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- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses the preparation method of a kind of enzyme modified Wooden powder/PVC composite material: (1) is combined the preparation of wood powder；(2) compound wood powder enzyme modification: according to following parts by weight, take lignin peroxidase 0.6 0.9 parts, laccase 0.5 1 parts, beta glucan enzyme 0.8 part, 100 parts of water, be prepared as enzymatic solution；Modified, use clear water rinsed clean, 60 DEG C of drying；(3) raw material is blended extruded: the raw material having configured dried according to following parts by weight: modified compound wood powder 42 60 parts, PVC 140 160 parts, 0.8 part of nanometer Montmorillonitum powder, trehalose 1 part；By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, is extruded into sheet material, cools down, cut, make molding with universal sampling machine.
Description
Technical field
The present invention relates to a kind of enzyme modified Wooden powder/PVC composite material, belong to wood and mould manufacture field.
Background technology
The nearly more than ten years, Wood Plastics Composite Product gradually moves towards market, but some Wood-plastic material performances are the most undesirable, such as punching
Hit intensity, bending modulus are relatively low.Raising wood powder content may result in wood plastic composite impact property and drastically declines, as loading surpasses
After 40% time, impact property reduces by more than 50%;In addition wood powder content improves and exacerbates the inflammability that wood is moulded, and good anti-flammability
It can be one of the important performance of construction material.Therefore, improve mechanical property and fire resistance is that raising wood plastic composite is extensive
The key of application.
Wood plastic composite (WPC) is the organic combination of Plant fiber and plastics, has taken into account Plant fiber and plastics
Double grading, existing timber and the premium properties of plastics, overcome again timber and plastics some shortcomings inherently simultaneously.Though
So WPC has more advantage, but it also has the respective shortcoming of bi-material: as plastic material is susceptible to degradation with aging,
The wood fiber is susceptible to rotten etc..The most a lot of WPC products are all used for outdoor, thus to the aging of WPC and antiseptic property
Research tool is of great significance.
Research shows, wood powder surface modification can be promoted the PVC/ wood powder interface compatibility and improve composite power
Learn performance;Nanoparticle can improve the intensity of polymer, toughness, anti-flammability etc. after adding polymer.
It is desirable to provide a kind of enzyme modified Wooden powder/PVC composite material, its natural environmental-protective, there is again good power
Learn performance and fire resistance.
Summary of the invention
The shortcoming that the present invention is directed to PVC wood plastic material of the prior art, it is provided that a kind of enzyme modified Wooden powder/PVC is combined
Material, its natural environmental-protective, there is again good mechanical property and fire resistance.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of preparation method of enzyme modified Wooden powder/PVC composite material, its step is as follows:
(1) preparation of compound wood powder:
According to following parts by weight, take cocoanut fiber 50-60 part, pine powder 10-15 part, Cortex Fraxini mandshuricae wood powder 10 parts, powdered rice hulls 3 parts
After grinding uniformly, mix homogeneously；
(2) compound wood powder enzyme modification:
According to following parts by weight, take lignin peroxidase 0.6-0.9 part, laccase 0.5-1 part, 1,4 beta-glucanase 0.8 part,
100 parts of water, is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 38 DEG C to process 40-60min,
Finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended extruded:
The raw material having configured dried according to following parts by weight: modified compound wood powder 42-60 part, PVC 140-160 part, nanometer
Montmorillonite powder 0.8 part, trehalose 1 part；
By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, each section of temperature of extruder
Degree is 168 DEG C, 185 DEG C, 175 DEG C, 165 DEG C；Screw speed 50r/min, is extruded into sheet material, cools down, cuts, with ten thousand
Molding can be made by sampling machine.
The invention have benefit that:
The invention provides a kind of high-toughness polylactic acid wood plastic composite, its raw material is natural, existing good biodegradable
Property, there is again good mechanical property.
Detailed description of the invention
Embodiment 1:
A kind of preparation method of enzyme modified Wooden powder/PVC composite material, its step is as follows:
(1) preparation of compound wood powder:
According to following parts by weight, taking cocoanut fiber 50 parts, pine powder 15 parts, Cortex Fraxini mandshuricae wood powder 10 parts, powdered rice hulls 3 parts grinds all
After even, mix homogeneously；
(2) compound wood powder enzyme modification:
According to following parts by weight, take lignin peroxidase 0.6 part, laccase 1 part, 1,4 beta-glucanase 0.8 part, 100 parts of water,
It is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 38 DEG C to process 40min, finally
It is heated to 80 DEG C and processes 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended extruded:
The raw material having configured dried according to following parts by weight: modified compound wood powder 60 parts, PVC 140 parts, nanometer Montmorillonitum
0.8 part of powder, trehalose 1 part；
By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, each section of temperature of extruder
Degree is 168 DEG C, 185 DEG C, 175 DEG C, 165 DEG C;Screw speed 50r/min, is extruded into sheet material, cools down, cuts, uses
Universal sampling machine makes molding.
Extrusion cross section is the sheet material of 5 mm × 50 mm, the print made is placed 24 h, tests its performance.
Embodiment 2:
A kind of preparation method of enzyme modified Wooden powder/PVC composite material, its step is as follows:
(1) preparation of compound wood powder:
According to following parts by weight, taking cocoanut fiber 60 parts, pine powder 10 parts, Cortex Fraxini mandshuricae wood powder 10 parts, powdered rice hulls 3 parts grinds all
After even, mix homogeneously；
(2) compound wood powder enzyme modification:
According to following parts by weight, take lignin peroxidase 0.9 part, laccase 0.5 part, 1,4 beta-glucanase 0.8 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 38 DEG C to process 60min, finally
It is heated to 80 DEG C and processes 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended extruded:
The raw material having configured dried according to following parts by weight: modified compound wood powder 42 parts, PVC 160 parts, nanometer Montmorillonitum
0.8 part of powder, trehalose 1 part；
By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, each section of temperature of extruder
Degree is 168 DEG C, 185 DEG C, 175 DEG C, 165 DEG C;Screw speed 50r/min, is extruded into sheet material, cools down, cuts, uses
Universal sampling machine makes molding.
Extrusion cross section is the sheet material of 5 mm × 50 mm, the print made is placed 24 h, tests its performance.
Embodiment 3:
A kind of preparation method of enzyme modified Wooden powder/PVC composite material, its step is as follows:
(1) preparation of compound wood powder:
According to following parts by weight, taking cocoanut fiber 55 parts, pine powder 13 parts, Cortex Fraxini mandshuricae wood powder 10 parts, powdered rice hulls 3 parts grinds all
After even, mix homogeneously；
(2) compound wood powder enzyme modification:
According to following parts by weight, take lignin peroxidase 0.7 part, laccase 0.9 part, 1,4 beta-glucanase 0.8 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 38 DEG C to process 45min, finally
It is heated to 80 DEG C and processes 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended extruded:
The raw material having configured dried according to following parts by weight: modified compound wood powder 53 parts, PVC 150 parts, nanometer Montmorillonitum
0.8 part of powder, trehalose 1 part；
By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, each section of temperature of extruder
Degree is 168 DEG C, 185 DEG C, 175 DEG C, 165 DEG C;Screw speed 50r/min, is extruded into sheet material, cools down, cuts, uses
Universal sampling machine makes molding.
Extrusion cross section is the sheet material of 5 mm × 50 mm, the print made is placed 24 h, tests its performance.
Embodiment 4:
A kind of preparation method of enzyme modified Wooden powder/PVC composite material, its step is as follows:
(1) preparation of compound wood powder:
According to following parts by weight, taking cocoanut fiber 52 parts, pine powder 11 parts, Cortex Fraxini mandshuricae wood powder 10 parts, powdered rice hulls 3 parts grinds all
After even, mix homogeneously；
(2) compound wood powder enzyme modification:
According to following parts by weight, take lignin peroxidase 0.8 part, laccase 0.6 part, 1,4 beta-glucanase 0.8 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 38 DEG C to process 58min, finally
It is heated to 80 DEG C and processes 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended extruded:
The raw material having configured dried according to following parts by weight: modified compound wood powder 48 parts, PVC 143 parts, nanometer Montmorillonitum
0.8 part of powder, trehalose 1 part；
By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, each section of temperature of extruder
Degree is 168 DEG C, 185 DEG C, 175 DEG C, 165 DEG C;Screw speed 50r/min, is extruded into sheet material, cools down, cuts, uses
Universal sampling machine makes molding.
Extrusion cross section is the sheet material of 5 mm × 50 mm, the print made is placed 24 h, tests its performance.
Embodiment 5:
A kind of preparation method of enzyme modified Wooden powder/PVC composite material, its step is as follows:
(1) preparation of compound wood powder:
According to following parts by weight, taking cocoanut fiber 57 parts, pine powder 14 parts, Cortex Fraxini mandshuricae wood powder 10 parts, powdered rice hulls 3 parts grinds all
After even, mix homogeneously；
(2) compound wood powder enzyme modification:
According to following parts by weight, take lignin peroxidase 0.6 part, laccase 0.8 part, 1,4 beta-glucanase 0.8 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 38 DEG C to process 55min, finally
It is heated to 80 DEG C and processes 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended extruded:
The raw material having configured dried according to following parts by weight: modified compound wood powder 56 parts, PVC 155 parts, nanometer Montmorillonitum
0.8 part of powder, trehalose 1 part；
By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, each section of temperature of extruder
Degree is 168 DEG C, 185 DEG C, 175 DEG C, 165 DEG C;Screw speed 50r/min, is extruded into sheet material, cools down, cuts, uses
Universal sampling machine makes molding.
Extrusion cross section is the sheet material of 5 mm × 50 mm, the print made is placed 24 h, tests its performance.
Embodiment 6: effect is tested and assessed
Hot strength: at room temperature test according to GB/T 1040.2-2006, draw speed is 5 mm/min;
Bending strength: test according to GB/9341-200 speed of experiment (5mm/min).
The polydactyl acid plastics preparing embodiment 1-5 carry out the test of performance according to this standard, result such as table 1
Shown in:
Table 1
As can be seen here, the present invention provides a kind of enzyme modified Wooden powder/PVC composite material, its natural environmental-protective, has again well
Mechanical property and fire resistance.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (3)
1. a preparation method for enzyme modified Wooden powder/PVC composite material, its step is as follows:
(1) preparation of compound wood powder:
Take cocoanut fiber, pine powder, Cortex Fraxini mandshuricae wood powder, after powdered rice hulls grinds uniformly, mix homogeneously；
(2) compound wood powder enzyme modification:
According to following parts by weight, take lignin peroxidase 0.6-0.9 part, laccase 0.5-1 part, 1,4 beta-glucanase 0.8 part,
100 parts of water, is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 38 DEG C to process 40-60min,
Finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended extruded:
The raw material having configured dried according to following parts by weight: modified compound wood powder 42-60 part, PVC 140-160 part, nanometer
Montmorillonite powder 0.8 part, trehalose 1 part；
By above-mentioned raw materials mixing and stirring, the material mixed is added in conical double screw extruder, each section of temperature of extruder
Degree is 168 DEG C, 185 DEG C, 175 DEG C, 165 DEG C；Screw speed 50r/min, is extruded into sheet material, cools down, cuts, with ten thousand
Molding can be made by sampling machine.
2. the preparation method described in claim 1, it is characterised in that:
Described step (1) is: according to following parts by weight, takes cocoanut fiber 50-60 part, pine powder 10-15 part, Cortex Fraxini mandshuricae wood powder
10 parts, after powdered rice hulls 3 parts grinds uniformly, mix homogeneously.
3. the Wooden powder/PVC composite material that the preparation method described in claim 1 or 2 obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610612611.0A CN106147078A (en) | 2016-07-29 | 2016-07-29 | A kind of enzyme modified Wooden powder/PVC composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610612611.0A CN106147078A (en) | 2016-07-29 | 2016-07-29 | A kind of enzyme modified Wooden powder/PVC composite material |
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| CN106147078A true CN106147078A (en) | 2016-11-23 |
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| CN201610612611.0A Pending CN106147078A (en) | 2016-07-29 | 2016-07-29 | A kind of enzyme modified Wooden powder/PVC composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543621A (en) * | 2016-11-25 | 2017-03-29 | 西华大学 | Wood plastic composite prepared by a kind of employing garbage and preparation method thereof |
| CN106638113A (en) * | 2016-11-29 | 2017-05-10 | 安徽索亚装饰材料有限公司 | Heat preservation wallpaper |
| CN111410828A (en) * | 2020-05-15 | 2020-07-14 | 运城学院 | Preparation method of plant wood powder/montmorillonite filled high-performance fully biodegradable polylactic acid composite material |
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| CN104441532A (en) * | 2014-12-03 | 2015-03-25 | 松原光禾能源有限公司 | Preparation method of lignin thermoplastic material |
| CN104963206A (en) * | 2014-12-11 | 2015-10-07 | 华东理工常熟研究院有限公司 | Enzyme modified paper pulp fiber, wood-plastic composite material and preparation method thereof |
| CN105061924A (en) * | 2015-07-28 | 2015-11-18 | 苏州市相城区明达复合材料厂 | Montmorillonite modified wood-plastic composite material plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104441532A (en) * | 2014-12-03 | 2015-03-25 | 松原光禾能源有限公司 | Preparation method of lignin thermoplastic material |
| CN104963206A (en) * | 2014-12-11 | 2015-10-07 | 华东理工常熟研究院有限公司 | Enzyme modified paper pulp fiber, wood-plastic composite material and preparation method thereof |
| CN105061924A (en) * | 2015-07-28 | 2015-11-18 | 苏州市相城区明达复合材料厂 | Montmorillonite modified wood-plastic composite material plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543621A (en) * | 2016-11-25 | 2017-03-29 | 西华大学 | Wood plastic composite prepared by a kind of employing garbage and preparation method thereof |
| CN106638113A (en) * | 2016-11-29 | 2017-05-10 | 安徽索亚装饰材料有限公司 | Heat preservation wallpaper |
| CN106638113B (en) * | 2016-11-29 | 2018-02-16 | 安徽索亚装饰材料有限公司 | A kind of insulation wallpaper |
| CN111410828A (en) * | 2020-05-15 | 2020-07-14 | 运城学院 | Preparation method of plant wood powder/montmorillonite filled high-performance fully biodegradable polylactic acid composite material |
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Application publication date: 20161123 |