CN108530854A - A kind of straw powder-PLA wood and plastic composite preparation method for material - Google Patents
A kind of straw powder-PLA wood and plastic composite preparation method for material Download PDFInfo
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- CN108530854A CN108530854A CN201810493331.1A CN201810493331A CN108530854A CN 108530854 A CN108530854 A CN 108530854A CN 201810493331 A CN201810493331 A CN 201810493331A CN 108530854 A CN108530854 A CN 108530854A
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- 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
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- 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
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- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- 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
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
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- 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
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- 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
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
Abstract
The invention discloses a kind of straw powder PLA wood and plastic composite preparation method for material, using PLA and straw powder as the main component of composite material, guarantee composite material has the advantages that can be degradable, while the auxiliary agent added is mostly the feature of environmental protection, and then it is environmental-friendly so that composite material is had the characteristics that.A variety of auxiliary agents are added in material preparation process, enhance the binding force between PLA and straw powder, and composite material prepared by the present invention can improve the brittleness and intensity of PLA material, have good toughness and mechanical strength.
Description
Technical field
The present invention relates to a kind of straw powder-PLA wood and plastic composite preparation method for material, belong to environment-friendly materials technical field.
Background technology
Polylactic acid（PLA）It as biodegradable plastics, is concerned in plastic products, and in each field
It is used widely, for environmental protection and realizes that sustainable development is made that contribution.But PLA higher prices, and it is showed
Go out larger brittleness, which also limits PLA multiple fields application.
Based on current PLA there are the shortcomings that and environment conscious material between contradiction, by make PLA and degradable substance into
The compound research hotspot as environment-friendly materials of row.Application of the sponge in modifying plastics gradually receives countries in the world
Attention, stalk will produce a large amount of dust as crops residue after burning disposal, pollute the environment, and pass through
The straw powder of processing is proved to that in plastics are retrofited positive acting can be played.
Invention content
The present invention passes through compound work for performance deficiency existing for PLA material using straw powder as sponge
Skill prepares environment amenable wood plastic composite, and concrete scheme is：
A kind of straw powder-PLA wood and plastic composite preparation method for material, prepared straw powder-PLA wood plastic composites can drop completely
Solution, the preparation method comprises the following steps；
A. it is 80 ~ 120 mesh to take the straw powder for crushing and completing, stalk Powder Particle Size, is dried in drying box, drying temperature 75 ~ 85
DEG C, drying time is 3.5 ~ 4.5h；
B. the silane coupling agent for taking a concentration of 3 ~ 7% fully infiltrates dry straw powder, stands 2 h under the conditions of 80 DEG C, and
It is dried again at 100 DEG C；
C. 50 parts of PLA, 20 ~ 30 parts of elastic body toughening agent, 0 ~ 9 part of compatilizer are taken, is uniformly mixed in high speed mixing smelting machine,
80 DEG C of mixing temperature mixes 15 min of duration, raw material A is made after dry；
D. 13 ~ 33 parts of straw powders, 3 parts of plasticizer, 0.5 ~ 1.5 part of foaming agent, 7 parts of lubricants are taken, in kneading machine with raw material A
It is uniformly mixed, 80 DEG C of mixing temperature, 15 min of incorporation time, raw material B is made after dry；
E. it by raw material B by double screw extruder extrusion mixing material grain, 140 ~ 150 DEG C of extrusion temperature, and will be mixed in pulverizer
Material grain is closed to crush；
F. the mixture grain after crushing is subjected to compression molding in vulcanizing press, heating 9 under the conditions of 170 ~ 190 DEG C ~
Then 11min applies 6 ~ 8MPa of molding pressure, and 15 ~ 35min of pressurize, straw powder-PLA wood plastic composites is made.
Further, the silane coupling agent is KH-560, and the elastic body toughening agent is SBS or PBS plastics, the phase
Appearance agent is PLA-g-MAH, and the plasticizer is synthesis vegetable esters environment-friendlyplasticizer plasticizer, and the foaming agent is AC foaming agents, described
Lubricant is the mixture of zinc stearate and super-fine talc, mixed proportion 1:1~4:3.
The beneficial effects of the present invention are：
1. the present invention is using PLA and straw powder as the main component of composite material, guarantee composite material has can be degradable
The advantages of, while the auxiliary agent added is mostly the feature of environmental protection, and then it is environmental-friendly so that composite material is had the characteristics that.
2. adding a variety of auxiliary agents in material preparation process in addition to the feature of environmental protection of consideration composite material in the present invention, enhance
Binding force between PLA and straw powder makes composite material molecular structure reconstruct, improves the brittleness and intensity of PLA material, make compound
Material has good toughness and mechanical strength, to widen the application range of composite material.
Specific implementation mode
The present invention provides a kind of straw powder-PLA wood and plastic composite preparation method for material, can be in conjunction with implementation in the following contents
The preparation process of the wood plastic composite is described in detail in example.
Embodiment 1
A kind of straw powder-PLA wood and plastic composite preparation method for material, includes the following steps：
A. it is 80 mesh to take the straw powder for crushing and completing, stalk Powder Particle Size, is dried in drying box, 80 DEG C of drying temperature, when drying
Between be 4h；
Dry straw powder is fully infiltrated, 2 h is stood under the conditions of 80 DEG C by the silane coupling agent KH-560 for b. taking a concentration of 5%,
And it is dried again at 100 DEG C；
C. 50 parts of PLA, 25 parts of SBS plastics, 5 parts of PLA-g-MAH are taken, are uniformly mixed in high speed mixing smelting machine, mixing temperature
80 DEG C, 15 min of duration is mixed, raw material A is made after dry；
D. 20 parts of straw powders, 3 parts of synthesis vegetable esters environment-friendlyplasticizer plasticizers, 1 part of AC foaming agent, 4 parts of zinc stearates, 3 parts of ultra micros are taken
Fine and smooth mountain flour is uniformly mixed in kneading machine with raw material A, 80 DEG C of mixing temperature, 15 min of incorporation time, is made after dry
Raw material B；
E. by raw material B by double screw extruder extrusion mixing material grain, 150 DEG C of extrusion temperature, and by mixture in pulverizer
Grain crushes；
F. the mixture grain after crushing in vulcanizing press is subjected to compression molding, 9min is heated under the conditions of 180 DEG C, then
Apply molding pressure 7MPa, and pressurize 20min, straw powder-PLA wood plastic composites are made.
Embodiment 2
A kind of straw powder-PLA wood and plastic composite preparation method for material, includes the following steps：
A. it is 80 mesh to take the straw powder for crushing and completing, stalk Powder Particle Size, is dried in drying box, 80 DEG C of drying temperature, when drying
Between be 4h；
Dry straw powder is fully infiltrated, 2 h is stood under the conditions of 80 DEG C by the silane coupling agent KH-560 for b. taking a concentration of 5%,
And it is dried again at 100 DEG C；
C. 50 parts of PLA, 25 parts of PBS plastics, 5 parts of PLA-g-MAH are taken, are uniformly mixed in high speed mixing smelting machine, mixing temperature
80 DEG C, 15 min of duration is mixed, raw material A is made after dry；
D. 20 parts of straw powders, 3 parts of synthesis vegetable esters environment-friendlyplasticizer plasticizers, 1 part of AC foaming agent, 4 parts of zinc stearates, 3 parts of ultra micros are taken
Fine and smooth mountain flour is uniformly mixed in kneading machine with raw material A, 80 DEG C of mixing temperature, 15 min of incorporation time, is made after dry
Raw material B；
E. by raw material B by double screw extruder extrusion mixing material grain, 150 DEG C of extrusion temperature, and by mixture in pulverizer
Grain crushes；
F. the mixture grain after crushing in vulcanizing press is subjected to compression molding, 9min is heated under the conditions of 180 DEG C, then
Apply molding pressure 7MPa, and pressurize 20min, straw powder PLA wood plastic composites are made.
Embodiment 3
A kind of straw powder-PLA wood and plastic composite preparation method for material, includes the following steps：
A. it is 80 mesh to take the straw powder for crushing and completing, stalk Powder Particle Size, is dried in drying box, 80 DEG C of drying temperature, when drying
Between be 4h；
Dry straw powder is fully infiltrated, 2 h is stood under the conditions of 80 DEG C by the silane coupling agent KH-560 for b. taking a concentration of 5%,
And it is dried again at 100 DEG C；
C. 50 parts of PLA, 25 parts of PBS plastics, 7 parts of PLA-g-MAH are taken, are uniformly mixed in high speed mixing smelting machine, mixing temperature
80 DEG C, 15 min of duration is mixed, raw material A is made after dry；
D. 30 parts of straw powders, 3 parts of synthesis vegetable esters environment-friendlyplasticizer plasticizers, 1 part of AC foaming agent, 4 parts of zinc stearates, 3 parts of ultra micros are taken
Fine and smooth mountain flour is uniformly mixed in kneading machine with raw material A, 80 DEG C of mixing temperature, 15 min of incorporation time, is made after dry
Raw material B；
E. by raw material B by double screw extruder extrusion mixing material grain, 150 DEG C of extrusion temperature, and by mixture in pulverizer
Grain crushes；
F. the mixture grain after crushing in vulcanizing press is subjected to compression molding, 10min is heated under the conditions of 180 DEG C, then
Apply molding pressure 6MPa, and pressurize 30min, straw powder-PLA wood plastic composites are made.
Embodiment 4
A kind of straw powder-PLA wood and plastic composite preparation method for material, includes the following steps：
A. it is 80 mesh to take the straw powder for crushing and completing, stalk Powder Particle Size, is dried in drying box, 80 DEG C of drying temperature, when drying
Between be 4h；
Dry straw powder is fully infiltrated, 2 h is stood under the conditions of 80 DEG C by the silane coupling agent KH-560 for b. taking a concentration of 5%,
And it is dried again at 100 DEG C；
C. 50 parts of PLA, 20 parts of PBS plastics, 5 parts of PLA-g-MAH are taken, are uniformly mixed in high speed mixing smelting machine, mixing temperature
80 DEG C, 15 min of duration is mixed, raw material A is made after dry；
D. take 15 parts of straw powders, 3 parts of synthesis vegetable esters environment-friendlyplasticizer plasticizers, 0.5 part of AC foaming agent, 4 parts of zinc stearates, 3 parts it is super
Micronized talc powder is uniformly mixed in kneading machine with raw material A, 80 DEG C of mixing temperature, 15 min of incorporation time, is made after dry
Obtain raw material B；
E. by raw material B by double screw extruder extrusion mixing material grain, 150 DEG C of extrusion temperature, and by mixture in pulverizer
Grain crushes；
F. the mixture grain after crushing in vulcanizing press is subjected to compression molding, 9min is heated under the conditions of 180 DEG C, then
Apply molding pressure 7MPa, and pressurize 20min, straw powder-PLA wood plastic composites are made.
Embodiment 5
A kind of straw powder-PLA wood and plastic composite preparation method for material, includes the following steps：
A. it is 80 mesh to take the straw powder for crushing and completing, stalk Powder Particle Size, is dried in drying box, 80 DEG C of drying temperature, when drying
Between be 4h；
Dry straw powder is fully infiltrated, 2 h is stood under the conditions of 80 DEG C by the silane coupling agent KH-560 for b. taking a concentration of 5%,
And it is dried again at 100 DEG C；
C. 50 parts of PLA, 20 parts of PBS plastics, 3 parts of PLA-g-MAH are taken, are uniformly mixed in high speed mixing smelting machine, mixing temperature
80 DEG C, 15 min of duration is mixed, raw material A is made after dry；
D. take 20 parts of straw powders, 3 parts of synthesis vegetable esters environment-friendlyplasticizer plasticizers, 1.5 parts of AC foaming agents, 3 parts of zinc stearates, 3 parts it is super
Micronized talc powder is uniformly mixed in kneading machine with raw material A, 80 DEG C of mixing temperature, 15 min of incorporation time, is made after dry
Obtain raw material B；
E. by raw material B by double screw extruder extrusion mixing material grain, 150 DEG C of extrusion temperature, and by mixture in pulverizer
Grain crushes；
F. the mixture grain after crushing in vulcanizing press is subjected to compression molding, 9min is heated under the conditions of 180 DEG C, then
Apply molding pressure 7MPa, and pressurize 20min, straw powder-PLA wood plastic composites are made.
To the straw powder-PLA wood plastic composites in embodiment 1 ~ 5, respectively according to standard GB/T1040.2-2006,
The tensile strength of GB1042-79, GB/T1843-2008, GB3682-1983 test sample, bending strength, impact strength, melt
Flow rate, test result is as follows shown in table：
Using technical solution of the present invention or those skilled in the art under the inspiration of technical solution of the present invention, design
Similar technical solution, and reach above-mentioned technique effect, it is to fall into protection scope of the present invention.
Claims (2)
1. a kind of straw powder-PLA wood and plastic composite preparation method for material, which is characterized in that prepared straw powder-PLA wood mouldings are multiple
Condensation material can be degradable, and the preparation method comprises the following steps；
A. it is 80 ~ 120 mesh to take the straw powder for crushing and completing, stalk Powder Particle Size, is dried in drying box, drying temperature 75 ~ 85
DEG C, drying time is 3.5 ~ 4.5h；
B. the silane coupling agent for taking a concentration of 3 ~ 7% fully infiltrates dry straw powder, stands 2 h under the conditions of 80 DEG C, and
It is dried again at 100 DEG C；
C. 50 parts of PLA, 20 ~ 30 parts of elastic body toughening agent, 0 ~ 9 part of compatilizer are taken, is uniformly mixed in high speed mixing smelting machine,
80 DEG C of mixing temperature mixes 15 min of duration, raw material A is made after dry；
D. 13 ~ 33 parts of straw powders, 3 parts of plasticizer, 0.5 ~ 1.5 part of foaming agent, 7 parts of lubricants are taken, in kneading machine with raw material A
It is uniformly mixed, 80 DEG C of mixing temperature, 15 min of incorporation time, raw material B is made after dry；
E. it by raw material B by double screw extruder extrusion mixing material grain, 140 ~ 150 DEG C of extrusion temperature, and will be mixed in pulverizer
Material grain is closed to crush；
F. the mixture grain after crushing is subjected to compression molding in vulcanizing press, heating 9 under the conditions of 170 ~ 190 DEG C ~
Then 11min applies 6 ~ 8MPa of molding pressure, and 15 ~ 35min of pressurize, straw powder-PLA wood plastic composites is made.
2. straw powder-PLA wood and plastic composite preparation method for material according to claim 1, which is characterized in that the silane is even
Connection agent is KH-560, and the elastic body toughening agent is SBS or PBS plastics, and the compatilizer is PLA-g-MAH, the plasticizer
To synthesize vegetable esters environment-friendlyplasticizer plasticizer, the foaming agent is AC foaming agents, and the lubricant is that zinc stearate and ultra micro are fine and smooth
The mixture of mountain flour, mixed proportion 1:1~4:3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493331.1A CN108530854B (en) | 2018-05-22 | 2018-05-22 | Preparation method of straw powder-PLA wood-plastic composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810493331.1A CN108530854B (en) | 2018-05-22 | 2018-05-22 | Preparation method of straw powder-PLA wood-plastic composite material |
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| CN108530854A true CN108530854A (en) | 2018-09-14 |
| CN108530854B CN108530854B (en) | 2020-12-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852017A (en) * | 2018-12-22 | 2019-06-07 | 四川天辰包装有限公司 | Degradable packing material of stalk filling and preparation method thereof and corrugation slab products |
| CN112029246A (en) * | 2020-08-14 | 2020-12-04 | 安徽丰原生物新材料有限公司 | Polylactic acid modified material containing plant fiber and preparation method thereof |
| RU2750712C1 (en) * | 2020-11-24 | 2021-07-01 | федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технологический университет" (ФГБОУ ВО "КНИТУ") | Method of obtaining a biodegradable polymer composition |
| CN113512275A (en) * | 2020-04-10 | 2021-10-19 | 上海茗露新材料科技有限公司 | High-melt-strength compostable degradable material and preparation method thereof |
-
2018
- 2018-05-22 CN CN201810493331.1A patent/CN108530854B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852017A (en) * | 2018-12-22 | 2019-06-07 | 四川天辰包装有限公司 | Degradable packing material of stalk filling and preparation method thereof and corrugation slab products |
| CN113512275A (en) * | 2020-04-10 | 2021-10-19 | 上海茗露新材料科技有限公司 | High-melt-strength compostable degradable material and preparation method thereof |
| CN112029246A (en) * | 2020-08-14 | 2020-12-04 | 安徽丰原生物新材料有限公司 | Polylactic acid modified material containing plant fiber and preparation method thereof |
| RU2750712C1 (en) * | 2020-11-24 | 2021-07-01 | федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технологический университет" (ФГБОУ ВО "КНИТУ") | Method of obtaining a biodegradable polymer composition |
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