CN115536953A - Biodegradable environment-friendly plastic master batch biodegradable packaging film - Google Patents
Biodegradable environment-friendly plastic master batch biodegradable packaging film Download PDFInfo
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- CN115536953A CN115536953A CN202211193285.6A CN202211193285A CN115536953A CN 115536953 A CN115536953 A CN 115536953A CN 202211193285 A CN202211193285 A CN 202211193285A CN 115536953 A CN115536953 A CN 115536953A
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- biodegradable
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- packaging film
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- 229920003023 plastic Polymers 0.000 title claims abstract description 31
- 239000004033 plastic Substances 0.000 title claims abstract description 31
- 239000012785 packaging film Substances 0.000 title claims abstract description 19
- 229920006280 packaging film Polymers 0.000 title claims abstract description 19
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 15
- 229920002472 Starch Polymers 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 241000196324 Embryophyta Species 0.000 claims abstract description 11
- 239000008107 starch Substances 0.000 claims abstract description 11
- 235000019698 starch Nutrition 0.000 claims abstract description 11
- 229920002261 Corn starch Polymers 0.000 claims abstract description 10
- 244000017020 Ipomoea batatas Species 0.000 claims abstract description 10
- 235000002678 Ipomoea batatas Nutrition 0.000 claims abstract description 10
- 239000008120 corn starch Substances 0.000 claims abstract description 10
- 229920001592 potato starch Polymers 0.000 claims abstract description 10
- 229940100486 rice starch Drugs 0.000 claims abstract description 10
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 8
- 238000006065 biodegradation reaction Methods 0.000 claims abstract description 8
- -1 polyethylene Polymers 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 239000010453 quartz Substances 0.000 claims abstract description 8
- 239000002025 wood fiber Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 239000003112 inhibitor Substances 0.000 claims abstract description 7
- 239000004014 plasticizer Substances 0.000 claims abstract description 7
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 24
- 229920000704 biodegradable plastic Polymers 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 229920002681 hypalon Polymers 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000010096 film blowing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 8
- 229920006238 degradable plastic Polymers 0.000 abstract description 6
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010057249 Phagocytosis Diseases 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000008782 phagocytosis Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2323/32—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with phosphorus- or sulfur-containing compounds
- C08J2323/34—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with phosphorus- or sulfur-containing compounds by chlorosulfonation
-
- 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
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- 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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
- C08K3/36—Silica
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a biodegradable packaging film of biodegradable environment-friendly plastic master batch, which comprises thirty percent of plant starch, twenty percent of polyethylene, twenty percent of fiber filler, ten percent of filling powder, ten percent of biodegradation inhibitor, seven percent of lubricant and three percent of plasticizer; according to the invention, the vegetable starch filler of sweet potato starch, corn starch and rice starch mixed in a three-to-one-to-two ratio is added, so that the properties of the sweet potato starch, the corn starch and the rice starch can be effectively combined, the cohesion and the toughness can be improved, the wood fiber filler can be added, the toughness and the ductility can be effectively enhanced, the overall cost is lower, the toughness of the degradable plastic can be further improved by adding five hundred to eight hundred meshes of quartz powder, the wear resistance of the degradable plastic can be improved, and the natural silicon dioxide is non-toxic and harmless, so that the service life can be effectively prolonged to a certain extent, and the degradable plastic can be degraded into harmless substances.
Description
Technical Field
The invention relates to the technical field of biodegradable materials, in particular to a biodegradable packaging film of biodegradable environment-friendly plastic master batches.
Background
The biodegradation refers to that materials are continuously discharged from the body in the process of tissue growing in through the actions of dissolution, enzymolysis, cell phagocytosis and the like in the body, the repaired tissue completely replaces the position of the implanted materials, the materials have no residual property in the body, and in numerous biodegradable materials, biodegradable plastics are one with larger dosage and are frequently used in daily life of people, such as various articles used in disposable tableware, disposable washing products, preservative films or mulching films used in planting;
in the initial stage, common plastics are mostly adopted to manufacture the articles, such as a packaging film is usually discarded after use, which causes very serious environmental pollution, such as the articles remain in soil after mulching in planting, harmful plastics can be degraded by the environment for hundreds of years, which causes very serious damage to the environment, so the articles need to be manufactured by biodegradable plastics, and can be quickly decomposed into harmless substances through microbial degradation of the environment after use, but the existing biodegradable plastics and packaging films have poor toughness and high manufacturing cost due to material reasons and cannot be well popularized and used; in the mother granules of biodegradable plastic granules disclosed in chinese patent CN106188768A, the toughness of the biodegradable plastic prepared only by polyethylene and calcium carbonate corn flour filler is improved but not enough.
Disclosure of Invention
The invention aims to provide a biodegradable packaging film of biodegradable environment-friendly plastic master batches, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a biodegradable packaging film of biodegradable and environment-friendly plastic masterbatch is composed of thirty percent of plant starch, twenty percent of polyethylene, twenty percent of fiber filler, ten percent of filling powder, ten percent of biodegradation inhibitor, seven percent of lubricant and three percent of plasticizer.
As a further scheme of the invention: the plant starch is prepared by mixing sweet potato starch, corn starch and rice starch according to a three-to-two ratio.
As a still further scheme of the invention: the polyethylene is modified chlorosulfonated polyethylene.
As a still further scheme of the invention: the fiber filler is wood fiber filler.
As a still further scheme of the invention: the filling powder is quartz powder, and the mesh number is five hundred to eight hundred.
As a still further scheme of the invention: the preparation process comprises the following steps:
firstly, thirty percent of sweet potato starch, corn starch and rice starch are mixed according to a three-to-two ratio to prepare plant starch, twenty percent of modified chlorosulfonated polyethylene, ten percent of biodegradation inhibitor and three percent of plasticizer, and the mixture is fed into a mixing roll, the temperature is controlled between one hundred twenty degrees centigrade and one hundred fifty degrees centigrade for mixing, and the mixing time is controlled between ten minutes and fifteen minutes;
opening the upper top bolt after the mixing time is up, adding twenty percent of wood fiber filler, five hundred to eight hundred percent of ten quartz powder and a certain amount of distilled water into the upper top bolt, closing the upper top bolt, mixing for the second time, controlling the temperature between eighty ℃ and one hundred ℃, and controlling the mixing time to be twenty minutes;
after the secondary mixing is finished, sending the mixture into manufacturing equipment for melting, extruding and granulating to obtain plastic master batches, sending the plastic master batches into drying equipment for drying at sixty-eighty ℃ for five-ten minutes, taking out the plastic master batches for sealing and packaging to obtain the plastic master batches;
and (3) feeding the obtained master batches into a film blowing machine, heating and melting the plastic master batches, blowing the plastic master batches into a film, and finally rolling and packaging to obtain the packaging film.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the plant starch fillers of sweet potato starch, corn starch and rice starch which are mixed in a three-to-one-to-two ratio are added, so that the characteristics of the sweet potato starch, the corn starch and the rice starch can be effectively combined, the cohesion and the toughness can be improved, the wood fiber fillers are added, the toughness and the ductility can be effectively enhanced, and the overall cost is lower.
2. According to the invention, the toughness of the degradable plastic can be further improved by adding five hundred to eight hundred meshes of quartz powder, the wear resistance of the degradable plastic can be improved, and the natural silicon dioxide is non-toxic and harmless, so that the service life can be effectively prolonged to a certain extent, and the degradable plastic can be degraded into harmless substances.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, the biodegradable packaging film of the biodegradable environment-friendly plastic master batch comprises thirty percent of plant starch, twenty percent of polyethylene, twenty percent of fiber filler, ten percent of filling powder, ten percent of biodegradation inhibitor, seven percent of lubricant and three percent of plasticizer.
The plant starch is prepared by mixing sweet potato starch, corn starch and rice starch according to a three-to-one-to-two ratio, the polyethylene is modified chlorosulfonated polyethylene, the fiber filler is wood fiber filler, the filling powder is quartz powder, and the selected mesh number is five hundred to eight hundred.
Example one
| The process | Control group | Control group | ControlGroup of | |
| Tensile strength | 62.7 | 43.8 | 42.9 | 44.6 |
| Elongation at break | 21.6 | 8.2 | 7.8 | 11.6 |
The embodiment shows that the packaging film obtained by the process has remarkable improvement in toughness and strength.
The working principle of the invention is as follows: firstly, thirty percent of sweet potato starch, corn starch and rice starch are mixed according to a three-to-two ratio to prepare plant starch, twenty percent of modified chlorosulfonated polyethylene, ten percent of biodegradation inhibitor and three percent of plasticizer, and the mixture is fed into a mixing roll, the temperature is controlled between one hundred twenty degrees centigrade and one hundred fifty degrees centigrade for mixing, and the mixing time is controlled between ten minutes and fifteen minutes; opening the upper top bolt after the mixing time is up, adding twenty percent of wood fiber filler, five hundred to eight hundred percent of ten quartz powder and a certain amount of distilled water into the upper top bolt, closing the upper top bolt, mixing for the second time, controlling the temperature between eighty ℃ and one hundred ℃, and controlling the mixing time to be twenty minutes; after the secondary mixing is finished, sending the mixture into manufacturing equipment for melting, extruding and granulating to obtain plastic master batches, sending the plastic master batches into drying equipment for drying at sixty-eighty ℃ for five-ten minutes, taking out the plastic master batches for sealing and packaging to obtain the plastic master batches; and (3) feeding the obtained master batches into a film blowing machine, heating and melting the plastic master batches, blowing the plastic master batches into a film, and finally rolling and packaging to obtain the packaging film.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (6)
1. A biodegradable packaging film of biodegradable environment-friendly plastic master batch is characterized by comprising the following substances by weight: thirty percent of plant starch, twenty percent of polyethylene, twenty percent of fiber filler, ten percent of filling powder, ten percent of biodegradation inhibitor, seven percent of lubricant and three percent of plasticizer.
2. The biodegradable packaging film of biodegradable and environment-friendly plastic masterbatch according to claim 1, wherein the plant starch is prepared by mixing sweet potato starch, corn starch and rice starch in a three-to-one-to-two ratio.
3. The biodegradable and environment-friendly plastic masterbatch biodegradable packaging film as claimed in claim 1, wherein the polyethylene is modified chlorosulfonated polyethylene.
4. The biodegradable packaging film of biodegradable plastic masterbatch according to claim 1, wherein the fiber filler is wood fiber filler.
5. The biodegradable packaging film of biodegradable plastic masterbatch according to claim 1, wherein the filling powder is quartz powder with five hundred to eight hundred meshes.
6. The biodegradable packaging film of biodegradable and environment-friendly plastic masterbatch of claim 1, which is prepared by the following steps:
1. firstly, thirty percent of sweet potato starch, corn starch and rice starch are mixed according to a three-to-two ratio to prepare plant starch, twenty percent of modified chlorosulfonated polyethylene, ten percent of biodegradation inhibitor and three percent of plasticizer, and the mixture is fed into a mixing roll, the temperature is controlled between one hundred twenty degrees centigrade and one hundred fifty degrees centigrade for mixing, and the mixing time is controlled between ten minutes and fifteen minutes;
2. opening the upper top bolt after the mixing time is up, adding twenty percent of wood fiber filler, five hundred to eight hundred percent of ten quartz powder and a certain amount of distilled water into the upper top bolt, closing the upper top bolt, mixing for the second time, controlling the temperature between eighty ℃ and one hundred ℃, and controlling the mixing time to be twenty minutes;
3. after the secondary mixing is finished, sending the mixture into manufacturing equipment for melting, extruding and granulating to obtain plastic master batches, sending the plastic master batches into drying equipment for drying at sixty-eighty ℃ for five-ten minutes, taking out the plastic master batches for sealing and packaging to obtain the plastic master batches;
4. and (3) feeding the obtained master batches into a film blowing machine, heating and melting the plastic master batches, blowing the plastic master batches into a film, and finally rolling and packaging to obtain the packaging film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193285.6A CN115536953A (en) | 2022-09-28 | 2022-09-28 | Biodegradable environment-friendly plastic master batch biodegradable packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193285.6A CN115536953A (en) | 2022-09-28 | 2022-09-28 | Biodegradable environment-friendly plastic master batch biodegradable packaging film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115536953A true CN115536953A (en) | 2022-12-30 |
Family
ID=84731493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211193285.6A Pending CN115536953A (en) | 2022-09-28 | 2022-09-28 | Biodegradable environment-friendly plastic master batch biodegradable packaging film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115536953A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004182877A (en) * | 2002-12-04 | 2004-07-02 | Koji Takamura | Biodegradable resin composition, biodegradable resin product, and method of its production |
| CN105585759A (en) * | 2015-11-20 | 2016-05-18 | 武汉华丽生物股份有限公司 | Full-biomass composite plastic and preparing method thereof |
| CN106279783A (en) * | 2016-08-15 | 2017-01-04 | 安徽明诚塑业有限公司 | A kind of plastic packaging bag and preparation method thereof |
| CN106832432A (en) * | 2016-12-30 | 2017-06-13 | 武汉华丽环保科技有限公司 | A kind of cellulose enhancing starch plasticses and preparation method and application |
| CN109306105A (en) * | 2017-07-26 | 2019-02-05 | 刘红阳 | A kind of high polymer bio-based composite material and preparation method thereof |
| CN109988350A (en) * | 2017-12-29 | 2019-07-09 | 武汉华丽环保科技有限公司 | A kind of cellulose enhancing starch composite material and preparation method thereof |
-
2022
- 2022-09-28 CN CN202211193285.6A patent/CN115536953A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004182877A (en) * | 2002-12-04 | 2004-07-02 | Koji Takamura | Biodegradable resin composition, biodegradable resin product, and method of its production |
| CN105585759A (en) * | 2015-11-20 | 2016-05-18 | 武汉华丽生物股份有限公司 | Full-biomass composite plastic and preparing method thereof |
| CN106279783A (en) * | 2016-08-15 | 2017-01-04 | 安徽明诚塑业有限公司 | A kind of plastic packaging bag and preparation method thereof |
| CN106832432A (en) * | 2016-12-30 | 2017-06-13 | 武汉华丽环保科技有限公司 | A kind of cellulose enhancing starch plasticses and preparation method and application |
| CN109306105A (en) * | 2017-07-26 | 2019-02-05 | 刘红阳 | A kind of high polymer bio-based composite material and preparation method thereof |
| CN109988350A (en) * | 2017-12-29 | 2019-07-09 | 武汉华丽环保科技有限公司 | A kind of cellulose enhancing starch composite material and preparation method thereof |
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Application publication date: 20221230 |