CN111138811A - Full-biodegradable plastic packaging material and preparation method thereof - Google Patents
Full-biodegradable plastic packaging material and preparation method thereof Download PDFInfo
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- CN111138811A CN111138811A CN201811305823.XA CN201811305823A CN111138811A CN 111138811 A CN111138811 A CN 111138811A CN 201811305823 A CN201811305823 A CN 201811305823A CN 111138811 A CN111138811 A CN 111138811A
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- packaging material
- plastic packaging
- biodegradable plastic
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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
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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
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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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
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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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
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/267—Magnesium carbonate
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a full-biodegradable plastic packaging material, which is prepared by mixing and extruding the following components in parts by weight: 70-90 parts of inorganic filler, 10-30 parts of biodegradable polymer, 0.5-3 parts of coupling agent and 2-5 parts of plasticizer. The invention also discloses a preparation method of the full-biodegradable plastic packaging material. After the fully biodegradable plastic packaging material is used, the fully biodegradable plastic packaging material can be absorbed into fragments or powder in the natural environment, and further degraded into carbon dioxide, water and inorganic minerals, so that the problem of white pollution is solved, and the fully biodegradable plastic packaging material is a real green and environment-friendly packaging material. The content of the inorganic filler in the full-biodegradable plastic packaging material is very high, and reaches more than 70 percent, thereby greatly reducing the manufacturing cost.
Description
Technical Field
The invention relates to the technical field of packaging materials, in particular to a full-biodegradable plastic packaging material and a preparation method thereof.
Background
With the development of human economy and society, the demand for plastic packaging materials is increasing day by day, at a rate of 5% per year. Common plastic varieties used as packaging materials are polyethylene, polypropylene, polyvinyl chloride and the like, and two serious problems occur along with the mass use of the plastic: on one hand, most of raw materials of the plastic industry come from petroleum, and as petroleum and natural gas resources are gradually reduced and even exhausted, the plastic industry faces the situation of raw material shortage; on the other hand, the ecological environment is destroyed because the plastics are not easy to decompose and recycle into the visible white pollution everywhere. Therefore, more and more people and countries advocate developing and applying fully biodegradable plastics. The completely biodegradable plastic is degraded by the action of microorganisms existing in nature or under specific conditions, can be completely degraded into carbon dioxide or methane, water and the like, and is an environment low-load material. In addition, a significant portion of the major feedstock for biodegradable plastics is available from annually renewable agricultural resources as a supplemental replacement for the limited, increasingly depleted, non-renewable petroleum resources.
There are dozens of biodegradable plastics developed at present, wherein the completely biodegradable plastics produced industrially mainly include polylactic acid (PLA), polybutylene succinate (PBS), Polyhydroxyalkanoate (PHA), Polyhydroxybutyrate (PHB), Polycaprolactone (PCL), etc., and have very wide applications in the fields of medical materials, agriculture, forestry, fishery, packaging industry, sanitary products, etc., and numerous industrial products such as compost bags, disposable tableware, agricultural mulching films, packaging films, fishing gear, diapers, operation tying lines, etc. are put on the market. The present aliphatic polyester/starch composite material capable of being completely biodegraded is mainly composed of dioxanone polymer, starch and compatibilizer, cheap inorganic filler calcium carbonate is added into completely biodegraded aliphatic polyester for filling, and various processing methods such as extrusion, molding, injection molding and spinning can be adopted to process different products. Wherein the content of calcium carbonate is 25-50%. How to further improve the content of calcium carbonate and develop a high-filling completely biodegradable packaging material in the true sense has fewer related reports, and related packaging products are rarely sold in the market.
Disclosure of Invention
The invention aims to provide a full-biodegradable plastic packaging material and a preparation method thereof, so as to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a full-biodegradable plastic packaging material is prepared by mixing and extruding the following components in parts by weight: 70-90 parts of inorganic filler, 10-30 parts of biodegradable polymer, 0.5-3 parts of coupling agent and 2-5 parts of plasticizer.
The inorganic filler is one or a mixture of more of calcium carbonate, magnesium carbonate, calcium sulfate, magnesium sulfate, fly ash, clay, talcum powder, mica powder, kaolin, titanium dioxide, chalk or magnesia powder.
The biodegradable polymer is one or a mixture of a plurality of polybutylene succinate, polylactic acid, polyglycolide, polycaprolactone, starch and polyvinyl alcohol.
The coupling agent is a titanium coupling agent, an aluminum coupling agent and an aluminum-titanium composite coupling agent.
The plasticizer is polyalcohol or citrate, and the polyalcohol can be ethylene glycol, glycerol, and sorbitol; the citrate esters can be tributyl citrate (TBC), trioctyl citrate (TOC), tributyl acetyl citrate (ATBC), trioctyl acetyl citrate (ATOC).
The preparation method of the full-biodegradable plastic packaging material comprises the following specific steps:
1) crushing the inorganic filler, taking the particle size of 1000-2500 meshes, and drying the inorganic filler in a dryer at the temperature of 100-200 ℃ until the water content is less than or equal to 0.5%;
2) stirring the inorganic filler in the step 1) and the coupling agent in a set proportion in a high-speed mixer, heating and activating, and mixing for 10-20 min at the temperature of 80-120 ℃;
3) mixing the inorganic filler, the biodegradable polymer and the plasticizer activated in the step 2) uniformly in a high-speed mixer according to a set proportion;
4) extruding and granulating the mixture obtained in the step 3) and an extruder at the extrusion temperature of 150-200 ℃.
Compared with the prior art, the invention has the beneficial effects that: after the fully biodegradable plastic packaging material is used, the fully biodegradable plastic packaging material can be absorbed into fragments or powder in the natural environment, and further degraded into carbon dioxide, water and inorganic minerals, so that the problem of white pollution is solved, and the fully biodegradable plastic packaging material is a real green and environment-friendly packaging material. The content of the inorganic filler in the full-biodegradable plastic packaging material is very high, and reaches more than 70 percent, thereby greatly reducing the manufacturing cost. The full-biodegradable plastic packaging material has the advantages of low production cost, simple preparation process and high economic and practical applicability.
Detailed Description
The present invention will be further described with reference to the following examples.
Example (b):
the invention relates to a full-biodegradable plastic packaging material, which is prepared by mixing and extruding the following components in parts by weight: 80 parts of inorganic filler, 16 parts of biodegradable polymer, 2 parts of coupling agent and 2 parts of plasticizer.
The inorganic filler is a mixture of calcium carbonate, magnesium carbonate, fly ash, clay, talcum powder, titanium dioxide and magnesia powder.
The biodegradable polymer is a mixture of polybutylene succinate, polylactic acid, polyglycolide, starch and polyvinyl alcohol.
The coupling agent is a titanium coupling agent, an aluminum coupling agent and an aluminum-titanium composite coupling agent.
The plasticizer is polyalcohol, and the polyalcohol can be ethylene glycol, glycerol, and sorbitol.
The preparation method of the full-biodegradable plastic packaging material comprises the following specific steps:
1) crushing the inorganic filler, taking the particle size of 1000-2500 meshes, and drying the inorganic filler in a dryer at the temperature of 150 ℃ until the water content is less than or equal to 0.5%;
2) stirring the inorganic filler in the step 1) and the coupling agent in a set proportion in a high-speed mixer, heating and activating, and mixing for 15min at the temperature of 100 ℃;
3) mixing the inorganic filler, the biodegradable polymer and the plasticizer activated in the step 2) uniformly in a high-speed mixer according to a set proportion;
4) extruding and granulating the mixture in the step 3) and an extruder, wherein the extrusion temperature is 180 ℃.
The invention adopts the conventional melt blending method and equipment for preparation, and the inorganic filler is dried for 2-4 hours at 100-200 ℃ to remove moisture; then, the coupling agent and the dried calcium carbonate are fully mixed and stirred in a high-speed stirrer according to a certain proportion, and the mixed calcium carbonate, the biodegradable polymer and the plasticizer are mixed in proportion and extruded and granulated in an extruder to prepare the fully biodegradable plastic packaging material. The packaging material can be processed into various packaging materials by processing modes such as blow molding, injection molding, die pressing and the like according to the requirements of products. The fully biodegradable plastic packaging material of the embodiment is adopted, and the material starts to degrade after being buried in soil for 45 days at normal temperature and is completely degraded in 5-6 months.
Claims (6)
1. A full-biodegradable plastic packaging material is characterized in that: the adhesive is prepared by mixing and extruding the following components in parts by weight: 70-90 parts of inorganic filler, 10-30 parts of biodegradable polymer, 0.5-3 parts of coupling agent and 2-5 parts of plasticizer.
2. The fully biodegradable plastic packaging material according to claim 1, characterized in that: the inorganic filler is one or a mixture of more of calcium carbonate, magnesium carbonate, calcium sulfate, magnesium sulfate, fly ash, clay, talcum powder, mica powder, kaolin, titanium dioxide, chalk or magnesia powder.
3. The fully biodegradable plastic packaging material according to claim 1, characterized in that: the biodegradable polymer is one or a mixture of a plurality of polybutylene succinate, polylactic acid, polyglycolide, polycaprolactone, starch and polyvinyl alcohol.
4. The fully biodegradable plastic packaging material according to claim 1, characterized in that: the coupling agent is a titanium coupling agent, an aluminum coupling agent and an aluminum-titanium composite coupling agent.
5. The fully biodegradable plastic packaging material according to claim 1, characterized in that: the plasticizer is polyalcohol or citrate, and the polyalcohol can be ethylene glycol, glycerol, and sorbitol; the citrate esters can be tributyl citrate (TBC), trioctyl citrate (TOC), tributyl acetyl citrate (ATBC), trioctyl acetyl citrate (ATOC).
6. The method for preparing the fully biodegradable plastic packaging material according to claim 1, wherein the method comprises the following steps: the method comprises the following specific steps:
1) crushing the inorganic filler, taking the particle size of 1000-2500 meshes, and drying the inorganic filler in a dryer at the temperature of 100-200 ℃ until the water content is less than or equal to 0.5%;
2) stirring the inorganic filler in the step 1) and the coupling agent in a set proportion in a high-speed mixer, heating and activating, and mixing for 10-20 min at the temperature of 80-120 ℃;
3) mixing the inorganic filler, the biodegradable polymer and the plasticizer activated in the step 2) uniformly in a high-speed mixer according to a set proportion;
4) extruding and granulating the mixture obtained in the step 3) and an extruder at the extrusion temperature of 150-200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305823.XA CN111138811A (en) | 2018-11-05 | 2018-11-05 | Full-biodegradable plastic packaging material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305823.XA CN111138811A (en) | 2018-11-05 | 2018-11-05 | Full-biodegradable plastic packaging material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111138811A true CN111138811A (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811305823.XA Pending CN111138811A (en) | 2018-11-05 | 2018-11-05 | Full-biodegradable plastic packaging material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574754A (en) * | 2020-06-13 | 2020-08-25 | 嘉善天惠服饰有限公司 | Basic formula of full-biodegradable button |
| CN112679926A (en) * | 2020-12-24 | 2021-04-20 | 海南赛诺实业有限公司 | High-crystallinity modified PGA material and preparation method thereof |
| CN113183405A (en) * | 2021-05-04 | 2021-07-30 | 普力达新材料科技(深圳)有限公司 | Fully-degradable tableware and preparation method thereof |
| CN114149669A (en) * | 2022-01-11 | 2022-03-08 | 宁夏青林华源科技有限公司 | Degradable tableware and preparation method thereof |
| CN117986827A (en) * | 2024-02-05 | 2024-05-07 | 广州市旭匠精密科技有限公司 | Environment-friendly degradable plastic and preparation method thereof |
-
2018
- 2018-11-05 CN CN201811305823.XA patent/CN111138811A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574754A (en) * | 2020-06-13 | 2020-08-25 | 嘉善天惠服饰有限公司 | Basic formula of full-biodegradable button |
| CN112679926A (en) * | 2020-12-24 | 2021-04-20 | 海南赛诺实业有限公司 | High-crystallinity modified PGA material and preparation method thereof |
| WO2022134381A1 (en) * | 2020-12-24 | 2022-06-30 | 海南赛诺实业有限公司 | High-crystalline modified pga material and preparation method therefor |
| CN113183405A (en) * | 2021-05-04 | 2021-07-30 | 普力达新材料科技(深圳)有限公司 | Fully-degradable tableware and preparation method thereof |
| CN114149669A (en) * | 2022-01-11 | 2022-03-08 | 宁夏青林华源科技有限公司 | Degradable tableware and preparation method thereof |
| CN117986827A (en) * | 2024-02-05 | 2024-05-07 | 广州市旭匠精密科技有限公司 | Environment-friendly degradable plastic and preparation method thereof |
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Application publication date: 20200512 |