CN101885231A - Preparation method of fully-degradable polymer wood plastic composite - Google Patents
Preparation method of fully-degradable polymer wood plastic composite Download PDFInfo
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- CN101885231A CN101885231A CN2009100513497A CN200910051349A CN101885231A CN 101885231 A CN101885231 A CN 101885231A CN 2009100513497 A CN2009100513497 A CN 2009100513497A CN 200910051349 A CN200910051349 A CN 200910051349A CN 101885231 A CN101885231 A CN 101885231A
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- plastic composite
- wood plastic
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- degradable polymer
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Classifications
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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
- B29C48/36—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
-
- 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
-
- 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
- B29C2948/9259—Angular 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
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a preparation method of a fully-degradable polymer wood plastic composite, which comprises the following steps: evenly mixing 30-90 weight parts of starch, 5-50 weight parts of vegetable fiber, 0.5-40 weight parts of plasticizer, 0.5-10 weight parts of cross-linking agent, 0.5-10 weight parts of intensifier and 0.5-2 weight parts of brightener by a double screw extruder on a homo-mixer; carrying out reaction and blending; then extruding the mixed material into grains in the double screw extruder, wherein the temperature of a screw rod is 70-250 DEG C, and the dwell time of the material in the screw rod is 0.5-30 minutes; and drying in a vacuum drying oven to obtain the biodegradable wood plastic composite with good performance and bright surface. The invention has simple method, and the obtained composite has the advantages of good overall performance, environmental degradation, obvious social benefit and the like, and can be used as packaging material, material of products of everyday consumption, finishing material and the like.
Description
Technical field
The invention belongs to the natural macromolecular material preparing technical field, relate to a kind of preparation method and application thereof of fully-degradable polymer wood plastic composite.
Background technology
Though synthesized polymer material has brought facility to people's life, its most of material source has caused energy shortage in oil.And, attracted the serious environmental pollution problem after discarding because most of synthesized polymer material does not possess biodegradability.And the development and application of degradable high polymer material can fundamentally solve problem of environmental pollution, so the research in Biodegradable polymer material field and application have received increasing concern.
Wood plastic composite is to be key component with wood-fibred or string, makes it a kind of new material that is composited with thermoplastic resin or other material through preliminary treatment.It has the advantage of timber and plastics concurrently, and wood-fibred aboundresources price is low, reusable, biodegradable, and has characteristics such as specific strength and hardness height, and application is very extensive.Be mainly used in aspects such as building materials, automobile, industry, packing, warehousing.Be difficult to degraded but the thermoplastic resin composition is most of in the wood plastic composite, so its reject product still can cause the pollution of environment.
There is scholar's research will have the aliphatic polyester series macromolecular material of good biocompatibility and fully biodegradable and string as raw material, the wood plastic composite (CN101020780A, the preparation method of polylactic acid-base thermoplastic wood-plastic composite material) of preparation complete biodegradable.But this family macromolecule material fancy price becomes the biggest obstacle of the practical application of such wood plastic composite, therefore seeks the developing direction that cheap macromolecule raw material become the practical application of complete biodegradable wood plastic composite.
Starch plastic relies on its raw material sources widely as one of biodegradation material, and cheap price and excellent advantages such as degradation property have been known as the representative of the new bio degradable material that has development potentiality by industry.It has obtained developing rapidly since coming out, and has successively experienced filled-type starch plastic, graft copolymerization starch plastic and thermoplastic three phases.Wherein, thermoplastic starch plastic can substitute the common plastics use in many occasions.For example, agriculturally can do slow release clad material that agricultural chemicals and fertilizer uses etc.; Aspect food, can satisfy directly and the requirement of Food Contact, can be used for the packing of drying solid food, as dairy products and candy, also can be used for fast food container, disposable plastic knife and fork, supermarket food package box and packaging bag etc.; Also can be used for replacing the polyethylene bonding layer of paper/polyethylene/metal foil layer stampings, make the recirculation of multi-layer packaging material become easy.Thermoplastic starch plastic and string is compound, be expected to not only can further obtain cheap biodegradation material, and have good natural appearance, but do not see bibliographical information as yet with thermoplastic starch plastic and string are compound by the goods that described biodegradation material obtains.
Summary of the invention
The object of the invention is that at the deficiencies in the prior art the simple cost of proposition technology is low, a kind of high-fall preparation method who separates wood plastic composite of environmental protection.
For achieving the above object, the technical scheme that adopts is, adopt double screw extruder that starch, natural plant fibre, plasticizer, crosslinking agent, reinforcing agent and brightener are carried out reactive blending, make and have functional, any surface finish and biodegradable wood plastic composite.
Method of the present invention is specially:
By weight, raw material components is starch 30-90 part, string 5-50 part, and plasticizer 0.5-40 part, crosslinking agent 0.5-10 part, reinforcing agent 0.5-10 part, brightener 0.5-2 part, it is 100 parts that each raw material is formed sum total.At first starch, string, plasticizer, crosslinking agent, reinforcing agent and brightener are mixed on homogenizer; the rotating speed of homogenizer is 3000-6000 rev/min; then mixed material is extruded in double screw extruder and made pellet; extruder temperature is 70-250 ℃; rotating speed is 90-300 rev/min; the time of staying of material in screw rod is 0.5-30 minute; after the material cooling of extruding; through the pelleter pelletizing; obtain pellet; in vacuum drying oven 60-100 ℃ dry 2-10 hour, obtain the high-fall wood plastic composite of separating.
Described starch is a kind of in cornstarch, farina, wheaten starch, the tapioca.
Described string is a kind of in wood powder, peanut hull meal, shell powder, litter shell powder, powder of straw or the bamboo powder.
Described plasticizer is a kind of or their mixture in water, ethylene glycol, glycerine, sorbierite, sweet mellow wine, erythrite, low molecular weight polyethylene alcohol, urea, thiocarbamide, guanidine hydrochloride, the formamide.
Described low molecular weight polyethylene alcohol is meant that average degree of polymerization is the polyvinyl alcohol of 300-900.
Described crosslinking agent is a kind of in borax, oxalic acid, POCl3, epoxychloropropane, formaldehyde, glyoxal, glutaraldehyde, the ethanedioic acid.
Described reinforcing agent is a kind of in styrene-maleic anhydride copolymer, polyurethane, the cinnamic acrylic ester.
Described brightener is methyl methacrylate and butyl acrylate copolymer, N, a kind of in the ethylene bis-fatty acid phthalein amine of the two ethylene stearic acid phthalein amine of N-, polyether-modified polysiloxanes, acrylic anhydride copolymer, modified with polar.
The inventive method is simple, and the composite that obtains has advantages such as excellent comprehensive performances and degraded by environment, can be used as aspects such as packaging material, daily necessities material and ornament materials, has obvious social.
The specific embodiment
Below by specific embodiment technical scheme of the present invention is further described.Following embodiment further specifies of the present invention, and does not limit the scope of the invention.
Among the embodiment raw material components all by weight, shared umber in per 100 parts.
Embodiment 1
40 parts of cornstarch, 40 parts of wood powders, 10 parts of glycerine, 8 parts of boraxs, 1.5 parts of styrene-maleic anhydride copolymers, acrylic anhydride copolymer are mixed on homogenizer for 0.5 part, the rotating speed of homogenizer is 3000 rev/mins, then mixed material being put into double screw extruder extrudes and makes pellet, extruder temperature is 70/90/100/140/150/165 ℃, and rotating speed is 100 rev/mins.The time of staying of material in screw rod is 15 minutes, after the material cooling of extruding, through the pelleter pelletizing, obtains pellet, in 60 ℃ of vacuum drying ovens, and dry 5 hours.
Embodiment 2
80 parts of cornstarch, 10 parts of wood powders, 5 parts of glycerine, 3 parts of boraxs, 1.5 parts of styrene-maleic anhydride copolymers, acrylic anhydride copolymer are mixed on homogenizer for 0.5 part, the rotating speed of homogenizer is 3000 rev/mins, then mixed material being put into double screw extruder extrudes and makes pellet, extruder temperature is 70/90/100/140/150/165 ℃, and rotating speed is 100 rev/mins.The time of staying of material in screw rod is 15 minutes, after the material cooling of extruding, through the pelleter pelletizing, obtains pellet, in 60 ℃ of vacuum drying ovens, and dry 5 hours.
Embodiment 3
With 2 parts of 40 parts of wheaten starches, 20 parts in shell powder, 30 parts of ethylene glycol, 6 parts of glutaraldehydes, 2 parts of polyurethane, methyl methacrylate and butyl acrylate copolymer, be to mix on 4000 rev/mins the homogenizer at rotating speed, then mixed material being put into double screw extruder extrudes and makes pellet, extruder temperature is 50/80/120/150/180/200 ℃, and rotating speed is 200 rev/mins.The time of staying of material in screw rod is 15 minutes, after the material cooling of extruding, through the pelleter pelletizing, obtains pellet, in 80 ℃ of vacuum drying ovens, and dry 6 hours.
Embodiment 4
60 parts of cornstarch, 10 parts of powder of straw, 10 parts of ethylene glycol, 10 parts of glycerine, 8 parts of boraxs, 1.5 parts of styrene-maleic anhydride copolymers, acrylic anhydride copolymer are mixed on homogenizer for 0.5 part, the rotating speed of homogenizer is 3000 rev/mins, then mixed material being put into double screw extruder extrudes and makes pellet, extruder temperature is 70/80/100/120/160/165 ℃, and rotating speed is 300 rev/mins.The time of staying of material in screw rod is 5 minutes, after the material cooling of extruding, through the pelleter pelletizing, obtains pellet, in 60 ℃ of vacuum drying ovens, and dry 5 hours.
Embodiment 5
With 20 parts of farinas; 35 parts in bamboo powder; 30 parts in water; 10 parts of low molecular weight polyethylene alcohol; 2 parts of glyoxals; 1 part of polyurethane; N; the two ethylene stearic acid phthalein amine of N-mix on homogenizer for 1 part; the rotating speed of homogenizer is 5000 rev/mins; then mixed material being put into double screw extruder extrudes and makes pellet; extruder temperature is 70/80/120/180/220/240 ℃; rotating speed is 90 rev/mins; the time of staying of material in screw rod is 30 minutes; after the material cooling of extruding; through the pelleter pelletizing; obtain pellet, in 80 ℃ of vacuum drying ovens, dry 3 hours.
Embodiment 6
By weight; drop into 50 parts of raw material tapiocas; 30 parts of wood dusts; 8 parts of low molecular weight polyethylene alcohol; 5 parts in urea; 5 parts of glutaraldehydes; 1 part of styrene-acrylic acid ester; 1 part of polyether-modified polysiloxanes; on homogenizer, mix; the rotating speed of homogenizer is 6000 rev/mins; then mixed material being put into double screw extruder extrudes and makes pellet; extruder temperature is 120/160/160/180/200/205 ℃; rotating speed is 300 rev/mins; the time of staying of material in screw rod is 10 minutes; after the material cooling of extruding,, obtain pellet through the pelleter pelletizing; in 100 ℃ of vacuum drying ovens, dry 2 hours.
The high-fall wood plastic composite of separating of product from embodiment 1～6 makes all has good mechanical performance and any surface finish.This shows that the present invention can replace traditional Wood-plastic material to be applied to aspects such as packaging material, environmental supplies and ornament materials.Simultaneously, because raw-material degraded and cheap fully, the wood plastic composite that makes the present invention obtain has good degradation property and wide industrial prospect.
Claims (10)
1. the preparation method of fully-degradable polymer wood plastic composite is characterized in that:
(1) raw material proportioning, by weight, starch 30-90 part, string 5-50 part, plasticizer 0.5-40 part, crosslinking agent 0.5-10 part, reinforcing agent 0.5-10 part, brightener 0.5-2 part, it is 100 parts that each raw material is formed sum total;
(2) reactive blending mixes by said ratio each raw material on homogenizer, and mixed material is extruded in double screw extruder made pellet then, the pelleter pelletizing, the vacuum drying oven drying obtains fully-degradable polymer wood plastic composite.
2. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: described starch is a kind of in cornstarch, farina, wheaten starch, the tapioca.
3. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: described string is a kind of in wood powder, peanut hull meal, shell powder, litter shell powder, powder of straw or the bamboo powder.
4. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: described plasticizer is a kind of or their mixture in water, ethylene glycol, glycerine, sorbierite, sweet mellow wine, erythrite, low molecular weight polyethylene alcohol, urea, thiocarbamide, guanidine hydrochloride, the formamide.
5. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: described crosslinking agent is a kind of in borax, oxalic acid, POCl3, epoxychloropropane, formaldehyde, glyoxal, glutaraldehyde, the ethanedioic acid.
6. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: described reinforcing agent is a kind of in styrene-maleic anhydride copolymer, polyurethane, the cinnamic acrylic ester.
7. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: described brightener is methyl methacrylate and butyl acrylate copolymer, N, a kind of in the ethylene bis-fatty acid phthalein amine of the two ethylene stearic acid phthalein amine of N-, polyether-modified polysiloxanes, acrylic anhydride copolymer, modified with polar.
8. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: described double screw extruder, extruder temperature are 70-250 ℃, and rotating speed is 90-300 rev/min, and the time of staying of material in screw rod is 0.5-30 minute.
9. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 1, it is characterized in that: the rotating speed of described homogenizer is 3000-6000 rev/min.
10. according to the preparation method of the described fully-degradable polymer wood plastic composite of claim 4, it is characterized in that: described low molecular weight polyethylene alcohol is meant that average degree of polymerization is the polyvinyl alcohol of 300-900.
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| CN2009100513497A CN101885231A (en) | 2009-05-15 | 2009-05-15 | Preparation method of fully-degradable polymer wood plastic composite |
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| CN2009100513497A CN101885231A (en) | 2009-05-15 | 2009-05-15 | Preparation method of fully-degradable polymer wood plastic composite |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417614A (en) * | 2011-08-16 | 2012-04-18 | 河南省南街村（集团）有限公司 | Method for preparing fully-degradable starch plastic master batch |
| CN103205023A (en) * | 2013-04-16 | 2013-07-17 | 陕西理工学院 | Preparation method of bamboo powder/white carbon black composite reinforced starch-based degradable plastic |
| CN103881148A (en) * | 2014-02-23 | 2014-06-25 | 江苏省农业科学院 | Preparation method for radiated corn starch-based biodegradation particles |
| CN104177662A (en) * | 2014-07-31 | 2014-12-03 | 江西禾尔斯环保科技有限公司 | Biodegradable material as well as preparation method and application of biodegradable material |
| CN104231645A (en) * | 2014-08-27 | 2014-12-24 | 广东红旗家具有限公司 | Preparation method and product of high-luminosity thermoplastic composite wood-plastic material |
| CN104231646A (en) * | 2014-08-27 | 2014-12-24 | 广东红旗家具有限公司 | Preparation method of high-strength wood-plastic composite material and high-strength wood-plastic composite material |
| CN105837864A (en) * | 2016-06-07 | 2016-08-10 | 内蒙古龙泽节水灌溉科技有限公司 | Fully biodegradable film and preparation method thereof |
| CN105859084A (en) * | 2016-04-11 | 2016-08-17 | 安徽省瑞敦诚基市政设施有限公司 | Novel three-chamber septic tank processed through injection molding and compression molding compounding technology |
| CN106536604A (en) * | 2014-08-07 | 2017-03-22 | 宝马股份公司 | Component of a composite material for a motor vehicle |
| CN107266720A (en) * | 2017-06-28 | 2017-10-20 | 常州市尚泽纺织品有限公司 | A kind of reinforced thermoplastic starch composite material and preparation method thereof |
| CN109096600A (en) * | 2018-06-29 | 2018-12-28 | 济南大学 | The preparation method and products obtained therefrom of the stalk fibre enhancing wood plastic composite of polymer nanocomposite ball modification |
| CN110862580A (en) * | 2019-11-11 | 2020-03-06 | 湖南工业大学 | Starch plant fiber fully-degradable composite material and preparation method thereof |
| US20200199305A1 (en) * | 2018-12-24 | 2020-06-25 | South China University Of Technology | Method for controlling thermoplasticity and toughness of redox-modified plant fiber and use thereof |
| CN113372621A (en) * | 2021-05-11 | 2021-09-10 | 合肥师范学院 | Degradable express bag material and preparation method and application thereof |
-
2009
- 2009-05-15 CN CN2009100513497A patent/CN101885231A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417614A (en) * | 2011-08-16 | 2012-04-18 | 河南省南街村（集团）有限公司 | Method for preparing fully-degradable starch plastic master batch |
| CN103205023A (en) * | 2013-04-16 | 2013-07-17 | 陕西理工学院 | Preparation method of bamboo powder/white carbon black composite reinforced starch-based degradable plastic |
| CN103881148A (en) * | 2014-02-23 | 2014-06-25 | 江苏省农业科学院 | Preparation method for radiated corn starch-based biodegradation particles |
| CN104177662A (en) * | 2014-07-31 | 2014-12-03 | 江西禾尔斯环保科技有限公司 | Biodegradable material as well as preparation method and application of biodegradable material |
| CN106536604A (en) * | 2014-08-07 | 2017-03-22 | 宝马股份公司 | Component of a composite material for a motor vehicle |
| CN104231646B (en) * | 2014-08-27 | 2016-08-24 | 广东红运家具有限公司 | The preparation method of a kind of high-intensity wood plastic composite and goods |
| CN104231646A (en) * | 2014-08-27 | 2014-12-24 | 广东红旗家具有限公司 | Preparation method of high-strength wood-plastic composite material and high-strength wood-plastic composite material |
| CN104231645A (en) * | 2014-08-27 | 2014-12-24 | 广东红旗家具有限公司 | Preparation method and product of high-luminosity thermoplastic composite wood-plastic material |
| CN105859084A (en) * | 2016-04-11 | 2016-08-17 | 安徽省瑞敦诚基市政设施有限公司 | Novel three-chamber septic tank processed through injection molding and compression molding compounding technology |
| CN105837864A (en) * | 2016-06-07 | 2016-08-10 | 内蒙古龙泽节水灌溉科技有限公司 | Fully biodegradable film and preparation method thereof |
| CN107266720A (en) * | 2017-06-28 | 2017-10-20 | 常州市尚泽纺织品有限公司 | A kind of reinforced thermoplastic starch composite material and preparation method thereof |
| CN109096600A (en) * | 2018-06-29 | 2018-12-28 | 济南大学 | The preparation method and products obtained therefrom of the stalk fibre enhancing wood plastic composite of polymer nanocomposite ball modification |
| CN109096600B (en) * | 2018-06-29 | 2020-08-11 | 济南大学 | Preparation method of polymer nanosphere modified straw fiber reinforced wood-plastic composite material and obtained product |
| US20200199305A1 (en) * | 2018-12-24 | 2020-06-25 | South China University Of Technology | Method for controlling thermoplasticity and toughness of redox-modified plant fiber and use thereof |
| US11767403B2 (en) * | 2018-12-24 | 2023-09-26 | South China University Of Technology | Method for controlling thermoplasticity and toughness of redox-modified plant fiber and use thereof |
| CN110862580A (en) * | 2019-11-11 | 2020-03-06 | 湖南工业大学 | Starch plant fiber fully-degradable composite material and preparation method thereof |
| CN113372621A (en) * | 2021-05-11 | 2021-09-10 | 合肥师范学院 | Degradable express bag material and preparation method and application thereof |
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Application publication date: 20101117 |