CN107083005A - A kind of starch base foamed plastic masterbatch and its foaming method - Google Patents
A kind of starch base foamed plastic masterbatch and its foaming method Download PDFInfo
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- CN107083005A CN107083005A CN201710328849.5A CN201710328849A CN107083005A CN 107083005 A CN107083005 A CN 107083005A CN 201710328849 A CN201710328849 A CN 201710328849A CN 107083005 A CN107083005 A CN 107083005A
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/02—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to polysaccharides
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- 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
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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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
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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
- C08L2205/24—Crystallisation aids
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to technical field of polymer materials, more particularly to a kind of biodegradable starch base foamed plastic masterbatch and its foaming method.The present invention is achieved through the following technical solutions：Starch and methyl acrylate are first subjected to graft copolymerization, modified starch is made and the water content of modified starch is adjusted；Then again to the biological Biodegradable polyester such as poly-succinic acid-butanediol grind into powder at low temperature；Finally by the mixing such as modified starch, polyester and appropriate plasticiser, nucleator and lubricant, the starch base foamed plastic masterbatch under the present invention is obtained.Foaming plastics product can be made in the foamed plastic masterbatch using conventional extruder.Obtained foaming plastics product is biodegradable, and processing and performance are good, and production cost is low, with larger competitive advantage and wide market prospects.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly to a kind of biodegradable starch base foamed plastic is female
Material and its foaming method.
Background technology
With developing rapidly for plastics industry technology, increasing waste petroleum base plastic products are brought closely to environment
The disaster destroyed, substantial amounts of plastic garbage abandoned is in social environment, and manufactured " white pollution " has become the world
In the range of stubborn problem.Wherein, foamed plastics accounts for waste plastic very big ratio.The rubbish island swum in ocean,
It is exactly that it most directly embodies.Therefore, the foamed plastic that production can be degradable substitutes traditional petroleum based foams plastics,
One of direction of Plastics Industry development is instantly turned into.
Publication No. CN105778143A patent application material, discloses a kind of biodegradable starch base foaming modeling
The foaming method of material.The component of material therefor is by starch, starch and acrylic ester grafted thing and polyacrylate group in this method
Into.Foaming agent is water.Simple by this method foam process, material cost is relatively low, and obtained foamed plastic can be biological
Degraded.But, larger by the foamed plastic fragility obtained by this method, performance is very limited.If increase is poly-
The content of acrylate, then can cause biodegradability to reduce.Publication No. CN101519503A patent of invention is also disclosed
A kind of starch base foamed plastic using water as foaming agent, by foamed plastic made from the invention has preferable plasticity, tough
Property, but containing larger amount of polyolefin in the component of the invention, this causes the degradation property by material made from the invention
It is poor.
The content of the invention
In order to overcome the defect of above-mentioned technical proposal, the present invention provides a kind of new using water as the biodegradable of foaming agent
Starch base foamed plastic and preparation method thereof.
The present invention is achieved through the following technical solutions：
A kind of biodegradable starch base foamed plastic masterbatch, it is characterised in that have following steps composition：
A. starch and methyl acrylate are subjected to graft copolymerization, modified starch is made, methyl acrylate content is little
In 30wt%；
B. adjust modified starch water content, make moisture account for weight of material than 12-30%, obtain powder one；
C. fully biodegradable resin is pulverized at low temperature, obtains powder two；
D. material is configured according to following components and parts by weight：40-90 parts of powder one, 5-50 parts of powder two, 0.5-3
Part nucleator, the lubricant of 0-15 parts of plasticizer and 0-3 part；
E. the material of D steps is put into high speed mixer and be well mixed, obtain starch base foamed plastic masterbatch.
It is preferred that, wherein in the step A, the weight ratio of the methyl acrylate added during starch conversion is 7.5-
15wt%.
It is preferred that, wherein in the step C, fully biodegradable resin is poly terephthalic acid-adipic acid-fourth two
One kind in alcohol, poly-succinic-butanediol, poly-succinic-adipic acid-butanediol, poly terephthalic acid-succinic acid-butanediol
Or several combinations.
It is preferred that, wherein in the step D, the parts by weight of powder two are 15-30.
It is preferred that, wherein in the step D, nucleator is talcum powder.
It is preferred that, wherein in the step D, plasticizer is one in formamide, acetamide, glycerine, ethylene glycol, sorbierite
Plant or several combinations.
It is preferred that, wherein in the step D, lubricant is the one or several kinds in polyglycerol ester, paraffin, stearate
Combination.
It is preferred that, wherein in the step E, maleic anhydride is added in mixing；
It is preferred that, wherein in the step E, weight ratio shared by maleic anhydride is 1-3wt%.
A kind of foaming method of biodegradable starch base foamed plastic masterbatch, it is characterised in that obtain the present invention
Biodegradable starch plasticses masterbatch be uniformly put into extrusion foaming in conventional extruder, the rotating speed of extruder is 100-
130r/min, each humidity province of extruder is set to 80-90,90-120,130-150,130-150,120-140 degree Celsius, extrusion
The draw ratio of machine is 20-30.
The beneficial effects of the invention are as follows：The invention provides a kind of biodegradable starch base foamed plastic masterbatch and its
Foaming method, can either be biodegradable by foamed plastic made from this method, but also with good performance, and produces
Technique is simple, and production cost is relatively low.The foamed plastic has larger market prospects.
Embodiment
The present invention is described in further detail below by specific embodiment, but these embodiments are only that citing
Illustrate, the scope of the present invention is not defined.
Embodiment one
8600g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
1400g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 20wt%, produce powder one.
By poly-succinic acid-butanediol under -20 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 50
Mesh, produces powder two.
Take 75 parts powder one, 15 parts of powder two, 1 part of talcum powder (granularity be 200 mesh), 7 parts of glycerine, 1 part
Polyglycerol ester is put into high speed mixer and mixed 30 minutes, produces the starch base foamed plastic masterbatch of the present invention.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
Example two
9250g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
750g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 12wt%, produce powder one.
By poly-succinic acid-butanediol under -30 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 100
Mesh, produces powder two.
Take 40 parts powder one, 55 parts of powder two, 2.5 parts of talcum powder (granularity be 80 mesh), 0 part of glycerine, 1 part
Polyglycereol stearate is put into high speed mixer and mixed 30 minutes, produces the starch base foamed plastic masterbatch of the present invention.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
Embodiment three
7500g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
2500g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 12wt%, produce powder one.
By poly-succinic acid-butanediol under -10 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 50
Mesh, produces powder two.
Take 56 parts powder one, 40 parts of powder two, 2 parts of talcum powder (granularity be 200 mesh), 0 part of glycerine, 2 parts
Polyglycereol stearate is put into high speed mixer and mixed 30 minutes, produces the starch base foamed plastic masterbatch of the present invention.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
In example two and example three not plus plasticiser, but because modified starch plasticity is good, and with poly-succinic fourth two
Alcohol compatibility is good, and its obtained properties of product and the product for adding plasticiser are almost similar.
Example IV
8300g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
1700g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 17wt%, produce powder one.
By poly-succinic acid-butanediol under -20 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 100
Mesh, produces powder two.
Take 73 parts powder one, 20 parts of powder two, 1 part of talcum powder (granularity be 80 mesh), 5 parts of glycerine, 1.5 parts
Paraffin is put into high speed mixer and mixed 30 minutes, produces the starch base foamed plastic masterbatch of the present invention.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
Embodiment five
8000g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
2000g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 20wt%, produce powder one.
By poly-succinic acid-butanediol under -30 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 100
Mesh, produces powder two.
Take 85 parts powder one, 5 parts of powder two, 0.5 part of talcum powder (granularity be 80 mesh), 10 parts of glycerine, 0 part
Polyglycereol stearate is put into high speed mixer and mixed 30 minutes, produces the starch base foamed plastic masterbatch of the present invention.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
Embodiment six
7000g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
3000g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 20wt%, produce powder one.
By poly-succinic acid-butanediol under -10 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 50
Mesh, produces powder two.
Take 85 parts powder one, 14 parts of powder two, 0.8 part of talcum powder (granularity be 100 mesh), 0 part of glycerine, 1 part
Polyglycerol ester be put into high speed mixer mix 30 minutes, produce the present invention starch base foamed plastic masterbatch.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
Embodiment seven
8500g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
1500g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 20wt%, produce powder one.
By poly-succinic acid-butanediol under -10 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 50
Mesh, produces powder two.
Take 65 parts powder one, 30 parts of powder two, 1.5 parts of talcum powder (granularity be 80 mesh), 5 parts of glycerine, 2 parts
Polyglycereol stearate is put into high speed mixer and mixed 30 minutes, produces the starch base foamed plastic masterbatch of the present invention.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
Embodiment eight
9700g cornstarch is put into the stirred autoclave for filling 20000g deionized waters, be stirring evenly and then adding into
300g methyl acrylates, then add catalyst ammonium ceric nitrate into stirred autoclave again, continue to stir, until reaction 2-3 is small
When.Reaction product is exported from stirred autoclave and is put into centrifuge and removes water, modified starch is produced, modified starch is put into
Dried in drier, dry water content to 20wt%, produce powder one.
By poly-succinic acid-butanediol under -30 degrees Celsius, pulverized by plastic grinder, the granularity of powder is 100
Mesh, produces powder two.
Take 30 parts powder one, 60 parts of powder two, 2.5 parts of talcum powder (granularity be 250 mesh), 5 parts of glycerine, 2.5
The polyglycerol ester of part is put into high speed mixer and mixed 30 minutes, produces the starch base foamed plastic masterbatch of the present invention.
Double screw extruder is started, and above-mentioned starch plasticses masterbatch is uniformly put into extrusion foaming in extruder, is produced
The starch base foamed plastic of the inventive method.The wherein rotating speed of extruder is 120r/min, each humidity province of extruder is set to 90,
110th, 150,150,140 degrees Celsius, the draw ratio of extruder is 25.
Embodiment nine
Poly-succinic acid-butanediol is successively by poly terephthalic acid-adipic acid-butanediol, poly-succinic-adipic acid-fourth two
Alcohol, poly terephthalic acid-succinic acid-butanediol or its combination are substituted, and repeat above-described embodiment, can be made modification successively
Starch and poly terephthalic acid-adipic acid-butanediol, poly-succinic-butanediol, poly-succinic-adipic acid-butanediol, poly- pair
The biodegradable starch base foamed plastic masterbatch that phthalic acid-succinic acid-butanediol is formed.
According to starch base foamed plastic masterbatch involved in the present invention and its foaming method, foam board, piece can be produced
The material such as material and foam-filled grain.
Claims (10)
1. a kind of starch base foamed plastic masterbatch, it is characterised in that the masterbatch is obtained by following steps：
A. starch and methyl acrylate are subjected to graft copolymerization, modified starch is made, methyl acrylate content is not more than
30wt%；
B. adjust modified starch water content, make moisture account for weight of material than 12-30%, obtain powder one；
C. fully biodegradable resin is pulverized at low temperature, obtains powder two；
D. material is configured according to following components and parts by weight：40-90 parts of powder one, 5-50 parts of powder two, 0.5-3 parts
Nucleator, the lubricant of 0-15 parts of plasticizer and 0-3 part；
E. the material of D steps is put into high speed mixer and be well mixed, obtain starch base foamed plastic masterbatch.
2. masterbatch according to claim 1, wherein in the step A, the weight of the methyl acrylate added during starch conversion
Amount is than being 7.5-15wt%.
3. masterbatch according to claim 1, wherein in the step C, fully biodegradable resin is poly- terephthaldehyde
Acid-adipic acid-butanediol, poly-succinic-butanediol, poly-succinic-adipic acid-butanediol, poly terephthalic acid-succinic acid-
One or more of combinations in butanediol.
4. masterbatch according to claim 1, wherein in the step D, weight ratio shared by powder two is 15-30wt%.
5. masterbatch according to claim 1, wherein in the step D, nucleator is talcum powder.
6. masterbatch according to claim 1, wherein in the step D, plasticizer is formamide, acetamide, glycerine, second two
One or several kinds of combinations in alcohol, sorbierite.
7. masterbatch according to claim 1, wherein in the step D, lubricant is polyglycerol ester, paraffin, stearate
In one or several kinds of combinations.
8. masterbatch according to claim 1, wherein in the step E, maleic anhydride is added in mixing.
9. a kind of biodegradable starch base foamed plastic masterbatch according to claim 8, wherein in the step E,
Weight shared by maleic anhydride is 1-3wt%.
10. a kind of foaming method of starch base foamed plastic masterbatch as described in one or more in claim 1 to 9, its
It is characterised by, the biodegradable starch plasticses masterbatch that the present invention is obtained uniformly is put into extrusion foaming in extruder, squeezes
Go out machine rotating speed for 100-130r/min, each humidity province of extruder is set to 80-90,90-120,130-150,130-150,120-
140 degrees Celsius, the draw ratio of extruder is 20-30.
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| CN201710328849.5A CN107083005A (en) | 2017-05-11 | 2017-05-11 | A kind of starch base foamed plastic masterbatch and its foaming method |
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| CN201710328849.5A CN107083005A (en) | 2017-05-11 | 2017-05-11 | A kind of starch base foamed plastic masterbatch and its foaming method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478809A (en) * | 2002-08-30 | 2004-03-03 | 叶新建 | Bioldegradation plastic masterbatch and its preparation method |
| CN104788979A (en) * | 2015-05-11 | 2015-07-22 | 王美岭 | Preparation method of fully-degradable foamed plastic |
| CN105778143A (en) * | 2016-03-31 | 2016-07-20 | 山东斯达克生物降解科技有限公司 | Foaming method for biodegradable starch-based foamed plastic |
| CN106046430A (en) * | 2016-06-30 | 2016-10-26 | 山东师范大学 | Completely biodegradable composite material |
-
2017
- 2017-05-11 CN CN201710328849.5A patent/CN107083005A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478809A (en) * | 2002-08-30 | 2004-03-03 | 叶新建 | Bioldegradation plastic masterbatch and its preparation method |
| CN104788979A (en) * | 2015-05-11 | 2015-07-22 | 王美岭 | Preparation method of fully-degradable foamed plastic |
| CN105778143A (en) * | 2016-03-31 | 2016-07-20 | 山东斯达克生物降解科技有限公司 | Foaming method for biodegradable starch-based foamed plastic |
| CN106046430A (en) * | 2016-06-30 | 2016-10-26 | 山东师范大学 | Completely biodegradable composite material |
Non-Patent Citations (2)
| Title |
|---|
| 严瑞瑄: "《水溶性高分子》", 30 June 1998, 化学工业出版社 * |
| 许晓秋等: "《高吸水性树脂的工艺与配方》", 30 April 2004, 化学工业出版社 * |
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