CN111361256A - Biodegradable packaging film special for aviation and preparation method thereof - Google Patents

Biodegradable packaging film special for aviation and preparation method thereof Download PDF

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Publication number
CN111361256A
CN111361256A CN202010272421.5A CN202010272421A CN111361256A CN 111361256 A CN111361256 A CN 111361256A CN 202010272421 A CN202010272421 A CN 202010272421A CN 111361256 A CN111361256 A CN 111361256A
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packaging film
film
biodegradable
parts
aviation
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郭维华
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Baoding Maohua Plastic Products Co ltd
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Baoding Maohua Plastic Products Co ltd
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Priority to CN202010272421.5A priority Critical patent/CN111361256A/en
Publication of CN111361256A publication Critical patent/CN111361256A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B65D65/466—Bio- or photodegradable packaging materials
    • 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
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00—Preparation of compounds containing saccharide radicals
    • C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00—Preparation of compounds containing saccharide radicals
    • C12P19/16—Preparation of compounds containing saccharide radicals produced by the action of an alpha-1, 6-glucosidase, e.g. amylose, debranched amylopectin
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • 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
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2429/00—Characterised by the use 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; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/04—Polyesters derived from hydroxy carboxylic 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • 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
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • 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
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
    • 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

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  • Chemical & Material Sciences (AREA)
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Abstract

The invention discloses a biodegradable packaging film special for aviation and a preparation method thereof, and relates to the technical field of packaging materials. The barrier layer comprises an inner layer and an outer layer protective layer, wherein the barrier layer and the protective layer are compounded; the barrier layer comprises the following raw materials in parts by weight: 70-100 parts of composite biodegradable material, 30-50 parts of modified starch, 5-10 parts of composite nano material, 0.5-1.5 parts of anti-hydrolysis agent and 0.2-0.5 part of antioxidant; the protective layer is a cellulose film and provides a preparation method. The invention improves the raw materials and the formula, further improves the tensile strength and the breaking elongation of the film, and the double-layer film is more suitable for protecting goods in aviation environment.

Description

Biodegradable packaging film special for aviation and preparation method thereof
Technical Field
The invention relates to the technical field of packaging materials, in particular to a biodegradable packaging film special for aviation and a preparation method thereof.
Background
The packaging film is mainly formed by mixing and extruding several different grades of resins, and is used for winding and packaging goods stacked on the supporting plate, so that the packaging material is more stable and tidy, and the packaging film is widely applied to the industries of foreign trade export, papermaking, hardware, plastic chemical industry, building materials and food and medicine.
However, the pollution problem caused by the existing packaging film is increasingly serious, and the degradable packaging film has relatively poor tensile strength and breaking tensile rate, so that the application of the degradable packaging film is greatly limited.
In addition, in the process of air transportation, higher requirements are put forward on the packaging film, so that the packaging film has certain tensile and abrasion resistance while solving the problem of environmental protection.
Therefore, how to provide a biodegradable packaging film special for aviation is a problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a biodegradable packaging film special for aviation and a preparation method thereof. The tensile strength and the breaking elongation of the packaging film are improved, so that the packaging film is more suitable for the use in the air transportation industry.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a special packaging film of biodegradable aviation, includes the barrier layer and the outer protective layer of inlayer, the barrier layer forms with the protective layer complex: the barrier layer comprises the following raw materials in parts by weight: 70-100 parts of composite biodegradable material, 30-50 parts of modified starch, 5-10 parts of composite nano material, 0.5-1.5 parts of anti-hydrolysis agent and 0.2-0.5 part of antioxidant; the protective layer is a cellulose film.
Preferably: the composite biodegradable material is polyethylene ester, polycaprolactone and polyhydroxybutyrate-hydroxyvalerate, and the mass ratio of the polyethylene ester to the polycaprolactone to the polyhydroxybutyrate-hydroxyvalerate is (0.2-0.5) to (1.5-2).
Preferably: composite nano material: nano silicon dioxide and nano zinc oxide.
Preferably: hydrolysis resistance agent: a carbodiimide or polycarbodiimide.
Preferably: antioxidant: a phosphite antioxidant.
The invention also provides a preparation method of the modified starch, which comprises the following steps:
(1) preparing starch emulsion from starch and distilled water according to the mass-to-volume ratio of 1: 20-25 g/ml;
(2) placing the starch emulsion at 80-90 ℃, stirring and pasting for 20-30 min to obtain a material A;
(3) cooling the material A to room temperature, carrying out enzymolysis for 20-30 min by using pullulanase, and then inactivating enzyme to obtain a material B;
(4) and heating the material B to 80-90 ℃, mixing the material B with polyvinyl alcohol and glycerol according to the mass ratio of (15-20) to (0.5-1), and stirring at the rotating speed of 300-500 r/min for 15-20 min to obtain the modified starch.
The starch is modified, so that the physicochemical properties of the prepared aviation special packaging film can be improved.
The invention also provides a preparation method of the biodegradable packaging film special for aviation, which comprises the following steps:
(1) mixing a composite biodegradable material, modified starch, a composite nano material, an anti-hydrolysis agent and an antioxidant, and stirring at the temperature of 80-90 ℃ at the rotating speed of 1500-2000 r/min for 20-30 min to obtain a mixture;
(2) shaping, cooling, drawing and cutting the mixture, and blowing a film to obtain a film A;
(3) and compounding the film A with a protective layer to obtain the biodegradable packaging film special for aviation.
The double-layer film structure is adopted, so that the isolation effect in practical application can be further improved.
According to the technical scheme, compared with the prior art, the invention discloses the biodegradable packaging film special for aviation and the preparation method thereof, and the technical effects are that the tensile strength and the breaking tensile rate of the film are improved, and the double-layer film is more suitable for protecting goods in the aviation environment.
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.
The embodiment of the invention discloses a biodegradable packaging film special for aviation and a preparation method thereof.
In the examples, the raw materials and the film blowing equipment which are not mentioned are purchased from commercial sources, the brands are not limited, and the methods which are not mentioned are conventional experimental methods, which are not described herein again.
Example 1
The utility model provides a special packaging film of biodegradable aviation, includes the barrier layer and the outer protective layer of inlayer, the barrier layer forms with the protective layer complex: raw materials of the barrier layer by weight: 70g of composite biodegradable material, 50g of modified starch, 5g of composite nano material, 1.5g of anti-hydrolysis agent and 0.2g of antioxidant; the protective layer is a cellulose film.
Wherein the composite biodegradable material is polyvinyl ester, polycaprolactone and polyhydroxybutyrate-hydroxyvalerate, and the mass ratio is 0.2: 1.5: 2.
Composite nano material: nano silicon dioxide and nano zinc oxide.
Hydrolysis resistance agent: a carbodiimide.
Antioxidant: a phosphite antioxidant.
The preparation method of the modified starch comprises the following steps:
(1) preparing starch emulsion from starch and distilled water according to the mass-volume ratio of 1: 20 g/ml;
(2) placing the starch emulsion at 80 ℃, stirring and pasting for 20min to obtain a material A;
(3) cooling the material A to room temperature, carrying out enzymolysis for 20min by pullulanase, and then inactivating enzyme to obtain a material B;
(4) heating the material B to 80 ℃, mixing the material B with polyvinyl alcohol and glycerol according to the mass ratio of 15: 0.5: 1, and stirring at the rotating speed of 300r/min for 15min to obtain the modified starch.
The preparation method of the biodegradable packaging film special for aviation comprises the following steps:
(1) mixing the composite biodegradable material, the modified starch, the composite nano material, the anti-hydrolysis agent and the antioxidant, and stirring at 80 ℃ at a rotating speed of 1500r/min for 20min to obtain a mixture;
(2) shaping, cooling, drawing and cutting the mixture, and blowing a film to obtain a film A;
(3) and compounding the film A with a protective layer to obtain the biodegradable packaging film special for aviation.
Example 2
The utility model provides a special packaging film of biodegradable aviation, includes the barrier layer and the outer protective layer of inlayer, the barrier layer forms with the protective layer complex: raw materials of the barrier layer by weight: 85g of composite biodegradable material, 40g of modified starch, 7g of composite nano material, 1g of anti-hydrolysis agent and 0.3g of antioxidant; the protective layer is a cellulose film.
Wherein the composite biodegradable material is polyvinyl ester, polycaprolactone and polyhydroxybutyrate-hydroxyvalerate, and the mass ratio is 0.3: 1.8: 2.
Composite nano material: nano silicon dioxide and nano zinc oxide.
Hydrolysis resistance agent: polycarbodiimide.
Antioxidant: a phosphite antioxidant.
The preparation method of the modified starch comprises the following steps:
(1) preparing starch emulsion from starch and distilled water according to the mass-volume ratio of 1: 22 g/ml;
(2) placing the starch emulsion at 85 ℃, stirring and pasting for 25min to obtain a material A;
(3) cooling the material A to room temperature, carrying out enzymolysis for 25min by pullulanase, and then inactivating enzyme to obtain a material B;
(4) heating the material B to 85 ℃, mixing the material B with polyvinyl alcohol and glycerol according to the mass ratio of 18: 0.7: 0.8, and stirring at the rotating speed of 450r/min for 20min to obtain the modified starch.
The preparation method of the biodegradable packaging film special for aviation comprises the following steps:
(1) mixing the composite biodegradable material, the modified starch, the composite nano material, the anti-hydrolysis agent and the antioxidant, and stirring at 85 ℃ at a rotating speed of 2000r/min for 25min to obtain a mixture;
(2) shaping, cooling, drawing and cutting the mixture, and blowing a film to obtain a film A;
(3) and compounding the film A with a protective layer to obtain the biodegradable packaging film special for aviation.
Example 3
The utility model provides a special packaging film of biodegradable aviation, includes the barrier layer and the outer protective layer of inlayer, the barrier layer forms with the protective layer complex: raw materials of the barrier layer by weight: 100g of composite biodegradable material, 30g of modified starch, 10g of composite nano material, 1.5g of anti-hydrolysis agent and 0.5g of antioxidant; the protective layer is a cellulose film.
Wherein the composite biodegradable material is polyvinyl ester, polycaprolactone and polyhydroxybutyrate-hydroxyvalerate, and the mass ratio is 0.5: 2: 1.5.
Composite nano material: nano silicon dioxide and nano zinc oxide.
Hydrolysis resistance agent: a carbodiimide.
Antioxidant: a phosphite antioxidant.
The preparation method of the modified starch comprises the following steps:
(1) preparing starch emulsion from starch and distilled water according to the mass-volume ratio of 1: 25 g/ml;
(2) placing the starch emulsion at 90 ℃, stirring and pasting for 30min to obtain a material A;
(3) cooling the material A to room temperature, carrying out enzymolysis for 30min by pullulanase, and then inactivating enzyme to obtain a material B;
(4) heating the material B to 90 ℃, mixing the material B with polyvinyl alcohol and glycerol according to the mass ratio of 20: 1, and stirring at the rotating speed of 500r/min for 20min to obtain the modified starch.
The preparation method of the biodegradable packaging film special for aviation comprises the following steps:
(1) mixing the composite biodegradable material, the modified starch, the composite nano material, the anti-hydrolysis agent and the antioxidant, and stirring at 90 ℃ at a rotating speed of 1500r/min for 30min to obtain a mixture;
(2) shaping, cooling, drawing and cutting the mixture, and blowing a film to obtain a film A;
(3) and compounding the film A with a protective layer to obtain the biodegradable packaging film special for aviation.
Comparative experiment
Comparative example 1 differs from example 2 in that the starch used is unmodified conventional starch and the procedure is otherwise the same as in example 2.
Comparative example 2, a commercially available degradable transport membrane.
Respectively detecting the tensile property and the elongation at break of the membrane according to GBT 1040; and detecting the biological decomposition rate of the membrane according to GB/T19277. For example 2 and comparative examples 1 and 2, the following table 1 is specifically referred to:
TABLE 1
Example 2 Comparative example 1 Comparative example 2
Tensile Strength (MPa) 52.2 38.7 45.4
Elongation at Break (%) 520 410 490
Biological decomposition Rate (%) 100 100 100
The result shows that the biodegradable packaging film special for aviation prepared by the invention has the same biological decomposition rate as the comparative example, and the tensile strength and the elongation at break are improved to a certain extent compared with those of the film prepared by replacing raw materials or the existing commercial products.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The biodegradable packaging film special for aviation is characterized by comprising an inner barrier layer and an outer protective layer, wherein the barrier layer and the protective layer are compounded; the barrier layer comprises the following raw materials in parts by weight: 70-100 parts of composite biodegradable material, 30-50 parts of modified starch, 5-10 parts of composite nano material, 0.5-1.5 parts of anti-hydrolysis agent and 0.2-0.5 part of antioxidant; the protective layer is a cellulose film.
2. The packaging film according to claim 1, wherein the composite biodegradable material is polyvinyl ester, polycaprolactone and polyhydroxybutyrate-hydroxyvalerate, and the mass ratio of the polyvinyl ester to the polycaprolactone to the polyhydroxybutyrate-hydroxyvalerate is (0.2-0.5) to (1.5-2).
3. The packaging film of claim 2, wherein the composite nanomaterial: nano silicon dioxide and nano zinc oxide.
4. The packaging film of claim 3, wherein the hydrolysis resistance agent: a carbodiimide or polycarbodiimide.
5. The packaging film of claim 4, wherein the antioxidant: a phosphite antioxidant.
6. A method for preparing modified starch is characterized by comprising the following steps:
(1) preparing starch emulsion from starch and distilled water according to the mass-to-volume ratio of 1: 20-25 g/ml;
(2) placing the starch emulsion at 80-90 ℃, and stirring and pasting for 20-30 min to obtain a material A;
(3) cooling the material A to room temperature, carrying out enzymolysis for 20-30 min by using pullulanase, and then inactivating enzyme to obtain a material B;
(4) and heating the material B to 80-90 ℃, mixing the material B with polyvinyl alcohol and glycerol according to the mass ratio of (15-20) to (0.5-1), and stirring at the rotating speed of 300-500 r/min for 15-20 min to obtain the modified starch.
7. A preparation method of a biodegradable packaging film special for aviation is characterized by comprising the following steps: (1) mixing a composite biodegradable material, modified starch, a composite nano material, an anti-hydrolysis agent and an antioxidant, and stirring at the temperature of 80-90 ℃ at the rotating speed of 1500-2000 r/min for 20-30 min to obtain a mixture;
(2) shaping, cooling, drawing and cutting the mixture, and blowing a film to obtain a film A;
(3) and compounding the film A with a protective layer to obtain the biodegradable packaging film special for aviation.
CN202010272421.5A 2020-04-08 2020-04-08 Biodegradable packaging film special for aviation and preparation method thereof Pending CN111361256A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106750565A (en) * 2017-03-20 2017-05-31 南京财经大学 A kind of modified starch of resistance to high humidity based biodegradable thin films and preparation method thereof
CN109401225A (en) * 2018-10-12 2019-03-01 广东华腾生物有限公司 A kind of biodegradable preservative film and preparation method thereof
CN109968755A (en) * 2019-04-22 2019-07-05 刘建林 Biodegradable composite package film and packaging bag
CN110437590A (en) * 2019-07-23 2019-11-12 华中农业大学 A kind of starch-base biodegradation food package film and preparation method thereof that composite nano materials are modified
CN110527261A (en) * 2019-09-06 2019-12-03 广东省生物工程研究所（广州甘蔗糖业研究所） A kind of high barrier Biodegradable film and the preparation method and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106750565A (en) * 2017-03-20 2017-05-31 南京财经大学 A kind of modified starch of resistance to high humidity based biodegradable thin films and preparation method thereof
CN109401225A (en) * 2018-10-12 2019-03-01 广东华腾生物有限公司 A kind of biodegradable preservative film and preparation method thereof
CN109968755A (en) * 2019-04-22 2019-07-05 刘建林 Biodegradable composite package film and packaging bag
CN110437590A (en) * 2019-07-23 2019-11-12 华中农业大学 A kind of starch-base biodegradation food package film and preparation method thereof that composite nano materials are modified
CN110527261A (en) * 2019-09-06 2019-12-03 广东省生物工程研究所（广州甘蔗糖业研究所） A kind of high barrier Biodegradable film and the preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
苏俊烽 等: "酶改性淀粉/PVA可降解膜的研究", 《黑龙江省农业工程学会2011学术年会论文集》 *

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