CN113308097A - Full-biodegradable material and preparation method thereof - Google Patents
Full-biodegradable material and preparation method thereof Download PDFInfo
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- CN113308097A CN113308097A CN202110801972.0A CN202110801972A CN113308097A CN 113308097 A CN113308097 A CN 113308097A CN 202110801972 A CN202110801972 A CN 202110801972A CN 113308097 A CN113308097 A CN 113308097A
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- 239000000463 material Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 238000005469 granulation Methods 0.000 claims abstract description 25
- 230000003179 granulation Effects 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 229920001896 polybutyrate Polymers 0.000 claims abstract description 19
- 239000003999 initiator Substances 0.000 claims abstract description 12
- 150000003254 radicals Chemical class 0.000 claims abstract description 12
- 239000007822 coupling agent Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 6
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 24
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 12
- 229920002472 Starch Polymers 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 229920005610 lignin Polymers 0.000 claims description 8
- 241000196324 Embryophyta Species 0.000 claims description 7
- 239000008107 starch Substances 0.000 claims description 7
- 235000019698 starch Nutrition 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 244000017020 Ipomoea batatas Species 0.000 claims description 3
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 3
- 240000003183 Manihot esculenta Species 0.000 claims description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 3
- 229920001592 potato starch Polymers 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 13
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 9
- 238000000071 blow moulding Methods 0.000 description 4
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229920000704 biodegradable plastic Polymers 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 244000061456 Solanum tuberosum Species 0.000 description 2
- 235000002595 Solanum tuberosum Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003623 enhancer Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 206010057249 Phagocytosis Diseases 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000008782 phagocytosis Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- 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
Abstract
A full-biodegradable material and a preparation method thereof relate to the technical field of biodegradable materials. The fully biodegradable material comprises, by weight: 60-80 parts of PBAT; 3-8 parts of PLA; 10-20 parts of reinforcement; 15-35 parts of a filler; 0.5-3 parts of a coupling agent; 0.05-0.2 part of free radical initiator. The preparation method of the full-biodegradable material comprises the following steps: the method comprises the following steps: preparing materials according to the proportion; step two: mixing the components in the first step, and preheating to 50-70 ℃; step three: injecting the mixture in the step two into a granulation extrusion device, heating to 120-150 ℃, and mixing to a molten state; step four: and extruding the mixture in the molten state through a film hole of granulation extrusion equipment, and sequentially cooling and granulating to obtain a finished product. The technical scheme has the advantages of strong flexibility, environmental protection, high degradation speed and simple preparation process.
Description
Technical Field
The invention relates to the technical field of biodegradable materials, in particular to a full-biodegradable material and a preparation method thereof.
Background
Biodegradable plastics refer to a class of plastics, such as PLA, PBAT, etc., that are degraded by the action of naturally occurring microorganisms, such as bacteria, molds (fungi), and algae. The ideal biodegradable plastic is a high molecular material which has excellent service performance, can be completely decomposed by environmental microorganisms after being discarded, and is finally inorganic to become a component of carbon circulation in nature. "paper" is a typical biodegradable material, while "synthetic plastics" is a typical polymeric material. Therefore, biodegradable plastics are polymeric materials having both the properties of "paper" and "synthetic plastics".
The existing products made of biodegradable blown film materials, such as products made of biodegradable materials such as PLA, PBAT or synthetic materials thereof by blow molding, have the problems of loose materials, brittleness, easy breakage, easy generation of holes and the like, can not meet the design requirements or use occasions of partial products, and are not beneficial to large-scale industrial application.
Disclosure of Invention
The invention aims to provide a full-biodegradable material and a preparation method thereof aiming at the defects and shortcomings of the prior art, and the full-biodegradable material has the advantages of strong flexibility, environmental protection, high degradation speed and simple preparation process. In order to achieve the purpose, the invention adopts the technical scheme that: a fully biodegradable material comprising, by weight: 60-80 parts of PBAT; 3-8 parts of PLA; 10-20 parts of reinforcement; 15-35 parts of a filler; 0.5-3 parts of a coupling agent; 0.05-0.2 part of free radical initiator.
The enhancer is plant starch or lignin.
When the enhancer is a plant starch, the plant starch is tapioca flour, sweet potato flour or potato flour.
The filler is 5-15 parts of talcum powder and 10-20 parts of calcium carbonate or nano active calcium carbonate.
The coupling agent is a silane coupling agent or a titanate coupling agent.
A preparation method of a full-biodegradable material comprises the following steps: the method comprises the following steps: preparing materials according to the proportion; step two: mixing the components in the first step, and preheating to 50-70 ℃; step three: injecting the mixture in the step two into a granulation extrusion device, heating to 120-150 ℃, and mixing to a molten state; step four: and extruding the mixture in the molten state through a film hole of granulation extrusion equipment, and sequentially cooling and granulating to obtain a finished product.
The preheating time in the second step is 8-15 minutes.
And the mixing time in the second step is 1-3 minutes.
And in the fourth step, after the mixture in the molten state is extruded through a film hole of the granulation extrusion equipment, cooling the mixture by air cooling equipment, and granulating the mixture by granulating equipment.
And all the steps from the second step to the fourth step are completed through an extrusion granulation production line.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. with the PBAT as a substrate, PLA and plant starch or lignin are added to improve the flexibility and enhance the tensile strength of the PBAT substrate. The interfacial tension between the PBAT and the PLA and the plant starch is reduced through the compatibility of the organic functional group of the coupling agent, so that the PLA and the plant starch can be stably and uniformly dispersed in the PBAT continuous phase, the processing fluidity of a material system is further effectively improved, the self strength of the material is considered, and the impact toughness of the material can be improved; in addition, the lignin as an environment-friendly material modifies the PBAT and the PLA in a modifying way, so that the mechanical property of the biodegradable material is obviously improved, and the tensile strength and the flexibility are enhanced.
2. The finished product made of the full-biodegradable material through blow molding has higher strength on the surface and stronger flexibility in the interior, can well solve the problems of loose and brittle material, easy breakage, easy generation of holes and the like of the existing blow molding product, can be completely degraded under the composting condition of about 180 days after the blow molding product is discarded, and finally is mainly decomposed into carbon dioxide and water under the phagocytosis and digestion action of microorganisms, thereby meeting the EN13432 standard and achieving the requirement of green and environmental protection.
3. PLA, a reinforcer, a coupling agent, a free radical initiator and a filler are added into PBAT, the mixture is preheated after being mixed, then the mixture is injected into granulation basic equipment to be heated and mixed to a molten state, then the mixture is extruded from a membrane hole of the granulation extrusion equipment, and finally the mixture is granulated after being cooled by air cooling equipment to obtain the fully biodegradable material. Is beneficial to industrial production.
Detailed Description
The present invention will be described in further detail below.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.
Example 1
A fully biodegradable material comprising, by weight: 70 parts of PBAT; 5 parts of PLA; 15 parts of cassava flour; 15 parts of calcium carbonate; 10 parts of talcum powder; 1.5 parts of a silane coupling agent; 0.1 part of free radical initiator.
The preparation method of the full-biodegradable material comprises the following steps:
the method comprises the following steps: preparing materials according to the proportion;
step two: mixing the components in the step one, and preheating to 60 ℃ for 10 minutes;
step three: injecting the mixture in the step two into granulation extrusion equipment, heating to 130 ℃, and mixing for 2 minutes to a molten state;
step four: and extruding the mixture in the molten state through a film hole of a granulating extrusion device, cooling by an air cooling device, granulating by a granulating device, and making a bag and a package to obtain a finished product.
Preferably, all of said steps two to four are completed by an extrusion granulation line.
Example 2
A fully biodegradable material comprising, by weight: 80 parts of PBAT; 8 parts of PLA; 20 parts of sweet potato powder; 10 parts of calcium carbonate; 10 parts of talcum powder; 3 parts of a silane coupling agent; 0.2 part of free radical initiator.
The preparation method of the full-biodegradable material comprises the following steps:
the method comprises the following steps: preparing materials according to the proportion;
step two: mixing the components in the step one, and preheating to 60 ℃ for 10 minutes;
step three: injecting the mixture in the step two into granulation extrusion equipment, heating to 130 ℃, and mixing for 2 minutes to a molten state;
step four: and extruding the mixture in the molten state through a film hole of a granulating extrusion device, cooling by an air cooling device, granulating by a granulating device, and making a bag and a package to obtain a finished product.
Preferably, all of said steps two to four are completed by an extrusion granulation line.
Example 3
A fully biodegradable material comprising, by weight: 60 parts of PBAT; 3 parts of PLA; 10 parts of potato powder; 10 parts of calcium carbonate; 5 parts of talcum powder; 0.5 part of a silane coupling agent; 0.05 part of free radical initiator.
Example 4
A fully biodegradable material comprising, by weight: 65 parts of PBAT; 8 parts of PLA; 10 parts of potato powder; 10 parts of nano active calcium carbonate; 10 parts of talcum powder; 2 parts of titanate coupling agent; 0.1 part of free radical initiator.
The preparation method of the full-biodegradable material comprises the following steps:
the method comprises the following steps: preparing materials according to the proportion;
step two: mixing the components in the step one, and preheating to 60 ℃ for 10 minutes;
step three: injecting the mixture in the step two into granulation extrusion equipment, heating to 130 ℃, and mixing for 2 minutes to a molten state;
step four: and extruding the mixture in the molten state through a film hole of a granulating extrusion device, cooling by an air cooling device, granulating by a granulating device, and making a bag and a package to obtain a finished product.
Preferably, all of said steps two to four are completed by an extrusion granulation line.
Example 5
A fully biodegradable material comprising, by weight: 70 parts of PBAT; 5 parts of PLA; 15 parts of lignin; 15 parts of calcium carbonate; 10 parts of talcum powder; 1.5 parts of a silane coupling agent; 0.1 part of free radical initiator.
The preparation method of the full-biodegradable material comprises the following steps:
the method comprises the following steps: preparing materials according to the proportion;
step two: mixing the components in the step one, and preheating to 60 ℃ for 10 minutes;
step three: injecting the mixture in the step two into granulation extrusion equipment, heating to 130 ℃, and mixing for 2 minutes to a molten state;
step four: and extruding the mixture in the molten state through a film hole of a granulating extrusion device, cooling by an air cooling device, granulating by a granulating device, and making a bag and a package to obtain a finished product.
Preferably, all of said steps two to four are completed by an extrusion granulation line.
Example 6
A fully biodegradable material comprising, by weight: 80 parts of PBAT; 8 parts of PLA; 20 parts of lignin; 10 parts of calcium carbonate; 10 parts of talcum powder; 3 parts of a silane coupling agent; 0.2 part of free radical initiator.
The preparation method of the full-biodegradable material comprises the following steps:
the method comprises the following steps: preparing materials according to the proportion;
step two: mixing the components in the step one, and preheating to 60 ℃ for 10 minutes;
step three: injecting the mixture in the step two into granulation extrusion equipment, heating to 130 ℃, and mixing for 2 minutes to a molten state;
step four: and extruding the mixture in the molten state through a film hole of a granulating extrusion device, cooling by an air cooling device, granulating by a granulating device, and making a bag and a package to obtain a finished product.
Preferably, all of said steps two to four are completed by an extrusion granulation line.
Example 7
A fully biodegradable material comprising, by weight: 60 parts of PBAT; 3 parts of PLA; 10 parts of lignin; 10 parts of calcium carbonate; 5 parts of talcum powder; 0.5 part of a silane coupling agent; 0.05 part of free radical initiator.
The preparation method of the full-biodegradable material comprises the following steps:
the method comprises the following steps: preparing materials according to the proportion;
step two: mixing the components in the step one, and preheating to 60 ℃ for 10 minutes;
step three: injecting the mixture in the step two into granulation extrusion equipment, heating to 130 ℃, and mixing for 2 minutes to a molten state;
step four: and extruding the mixture in the molten state through a film hole of a granulating extrusion device, cooling by an air cooling device, granulating by a granulating device, and making a bag and a package to obtain a finished product.
Preferably, all of said steps two to four are completed by an extrusion granulation line.
Example 8
A fully biodegradable material comprising, by weight: 65 parts of PBAT; 8 parts of PLA; 10 parts of lignin; 10 parts of nano active calcium carbonate; 10 parts of talcum powder; 2 parts of titanate coupling agent; 0.1 part of free radical initiator.
The preparation method of the full-biodegradable material comprises the following steps:
the method comprises the following steps: preparing materials according to the proportion;
step two: mixing the components in the step one, and preheating to 60 ℃ for 10 minutes;
step three: injecting the mixture in the step two into granulation extrusion equipment, heating to 130 ℃, and mixing for 2 minutes to a molten state;
step four: and extruding the mixture in the molten state through a film hole of a granulating extrusion device, cooling by an air cooling device, granulating by a granulating device, and making a bag and a package to obtain a finished product.
Preferably, all of said steps two to four are completed by an extrusion granulation line.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A fully biodegradable material, characterized by comprising, by weight:
60-80 parts of PBAT; 3-8 parts of PLA; 10-20 parts of reinforcement; 15-35 parts of a filler; 0.5-3 parts of a coupling agent; 0.05-0.2 part of free radical initiator.
2. The fully biodegradable material according to claim 1, characterized in that said reinforcement is a plant starch or lignin.
3. The fully biodegradable material according to claim 2, characterized in that when said reinforcement is a vegetable starch, the vegetable starch is tapioca, sweet potato or potato flour.
4. The fully biodegradable material according to any of claims 1-3, characterized in that said filler is 5-15 parts of talc and 10-20 parts of calcium carbonate or nano-active calcium carbonate.
5. The fully biodegradable material according to claim 1, characterized in that said coupling agent is a silane coupling agent or a titanate coupling agent.
6. The preparation method of the full-biodegradable material is characterized by comprising the following steps of:
the method comprises the following steps: preparing the material in the proportion as claimed in any one of claims 1 to 5;
step two: mixing the components in the first step, and preheating to 50-70 ℃;
step three: injecting the mixture in the step two into a granulation extrusion device, heating to 120-150 ℃, and mixing to a molten state;
step four: and extruding the mixture in the molten state through a film hole of granulation extrusion equipment, and sequentially cooling and granulating to obtain a finished product.
7. The fully biodegradable material according to claim 6, wherein the preheating time in step two is 8-15 minutes.
8. The fully biodegradable material according to claim 6, wherein the mixing time in step two is 1-3 minutes.
9. The fully biodegradable material according to any one of claims 6-8, wherein the mixture in the molten state in step four is extruded through the film holes of the granulating extrusion equipment, and then is cooled by the air cooling equipment and granulated by the granulating equipment.
10. The fully biodegradable material according to claim 6, characterized in that all the steps two to four are completed by an extrusion granulation line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801972.0A CN113308097A (en) | 2021-07-15 | 2021-07-15 | Full-biodegradable material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110801972.0A CN113308097A (en) | 2021-07-15 | 2021-07-15 | Full-biodegradable material and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627153A (en) * | 2012-08-20 | 2014-03-12 | 上海杰事杰新材料(集团)股份有限公司 | Entire biodegradation PLA/PBAT composite material and preparing method therefor |
| CN108102323A (en) * | 2017-12-21 | 2018-06-01 | 苏州星火丰盈环保包装有限公司 | A kind of complete biodegradable refuse bag and preparation method thereof |
| CN111825961A (en) * | 2020-06-24 | 2020-10-27 | 上海昶法新材料有限公司 | Biodegradable material, raw material composition thereof, and preparation method and application thereof |
| CN112920565A (en) * | 2021-01-30 | 2021-06-08 | 汕头市三马塑胶制品有限公司 | High-melt-strength biodegradable polyester material and preparation method thereof |
-
2021
- 2021-07-15 CN CN202110801972.0A patent/CN113308097A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627153A (en) * | 2012-08-20 | 2014-03-12 | 上海杰事杰新材料(集团)股份有限公司 | Entire biodegradation PLA/PBAT composite material and preparing method therefor |
| CN108102323A (en) * | 2017-12-21 | 2018-06-01 | 苏州星火丰盈环保包装有限公司 | A kind of complete biodegradable refuse bag and preparation method thereof |
| CN111825961A (en) * | 2020-06-24 | 2020-10-27 | 上海昶法新材料有限公司 | Biodegradable material, raw material composition thereof, and preparation method and application thereof |
| CN112920565A (en) * | 2021-01-30 | 2021-06-08 | 汕头市三马塑胶制品有限公司 | High-melt-strength biodegradable polyester material and preparation method thereof |
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