CN117186597B - Environment-friendly type barrier film packaging material - Google Patents
Environment-friendly type barrier film packaging material Download PDFInfo
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- CN117186597B CN117186597B CN202311179327.5A CN202311179327A CN117186597B CN 117186597 B CN117186597 B CN 117186597B CN 202311179327 A CN202311179327 A CN 202311179327A CN 117186597 B CN117186597 B CN 117186597B
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- 230000004888 barrier function Effects 0.000 title claims abstract description 118
- 239000005022 packaging material Substances 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 91
- 239000000463 material Substances 0.000 claims abstract description 87
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 53
- 239000002270 dispersing agent Substances 0.000 claims abstract description 48
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 47
- 238000002156 mixing Methods 0.000 claims abstract description 42
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 37
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 15
- 239000010445 mica Substances 0.000 claims abstract description 15
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims abstract description 10
- 229920000573 polyethylene Polymers 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 23
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 12
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000006227 byproduct Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 16
- 239000008187 granular material Substances 0.000 description 12
- 239000002202 Polyethylene glycol Substances 0.000 description 11
- 229920001223 polyethylene glycol Polymers 0.000 description 11
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 11
- 229920006267 polyester film Polymers 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Wrappers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an environment-friendly barrier film packaging material, and belongs to the technical field of film materials. The raw materials of the environment-friendly type barrier film packaging material comprise polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent; the composite barrier material consists of graphene, mica and silicon dioxide; the composite dispersing agent is polyethylene wax and white oil with equal mass ratio; the environment-friendly barrier film packing material is prepared by lamellar blending. The composite blocking material with unique formula proportion and the composite dispersing agent have synergistic effect, and the blocking capability of the polyethylene terephthalate is improved by layered blending modification with the polyethylene terephthalate, so that the defect of poor oxygen and water vapor blocking capability of the conventional polyethylene terephthalate film is overcome, and the moisture resistance of the polyethylene terephthalate film is effectively improved. The method has the advantages of no generation of by-products harmful to the environment in the production process, high production efficiency, low cost and good application prospect.
Description
Technical Field
The invention belongs to the technical field of film materials, and relates to an environment-friendly barrier film packaging material.
Background
The polyester film is a packaging film with relatively comprehensive performance. The transparent glass has good transparency and luster; has good air tightness and fragrance retention. The mechanical property of the polyester film is excellent, the toughness is the best in all thermoplastics, and the tensile strength and the impact strength are much higher than those of the common film; and the strength is good, the size is stable, and the printing paper bag is suitable for secondary processing such as printing paper bags. The polyester film also has excellent heat resistance, cold resistance and good chemical resistance and oil resistance. But it is not strong alkali resistant, is easily electrostatically charged and has moderate moisture resistance, and is not suitable for long-term packaging of articles with moisture resistance requirements.
In the packaging materials of foods and medicines, because of air and moisture blocking, an aluminum foil layer is usually required to be electroplated in the packaging material, so that the cost of the packaging material is greatly increased, and the pollution of the existing electroplating process to the environment is large, therefore, the modified polyester film packaging material is synthesized by the existing polymer technology, and the packaging material has the advantages of high production efficiency and low cost, and can achieve the blocking effect similar to that of an aluminum film.
Patent CN116284712a discloses an environment-friendly polyester film and a preparation method thereof, the environment-friendly polyester film comprises the following components in parts by weight: 40-51 parts of terephthalic acid, 10-13 parts of ethylene glycol, 0.002-0.004 parts of titanium catalyst and 1-2 parts of stabilizer, wherein the titanium catalyst is obtained by growing zinc-aluminum hydrotalcite on the surface of an organic titanium complex. The environment-friendly polyester film prepared by the application has the characteristics of bright color, good tensile resistance and the like, has low requirements on the process, and is suitable for industrial mass production.
Patent CN114536824a discloses a polyester film, the preparation process comprises the following steps: s1, premixing and drying; s2, melt extrusion; s3, pressing and stretching; s4, corona treatment; s5, winding and slitting; the raw materials of the polyester film comprise the following raw materials in parts by weight: 110-130 parts of terephthalic acid, 145-185 parts of ethylene glycol, 2-5 parts of aluminum hydroxy distearate, 6-9 parts of decanediamine, 1.3-1.8 parts of nano silicon dioxide and 0.1-0.2 part of triethyl phosphate.
Disclosure of Invention
The invention aims to provide an environment-friendly barrier film packaging material which has the characteristics of small pollution, high production efficiency, low cost and low oxygen and water vapor transmittance.
The aim of the invention can be achieved by the following technical scheme:
An environment-friendly type barrier film packaging material, wherein the raw materials of the environment-friendly type barrier film packaging material comprise polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent.
As a preferable technical scheme of the invention, the composite barrier material consists of graphene, mica and silicon dioxide.
As a preferable technical scheme of the invention, the mass ratio of the graphene to the mica to the silicon dioxide is 30-35:15-20:1-5.
As a preferable technical scheme of the invention, the particle size of the composite barrier material is 800-1000 meshes.
As a preferable technical scheme of the invention, the composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
As a preferable technical scheme of the invention, the auxiliary agent is monoalkoxy titanate.
As a preferable technical scheme of the invention, the mass ratio of the polyethylene terephthalate to the composite barrier material to the composite dispersing agent to the auxiliary agent is 250-300:30-50:3-5:10-30.
As a preferable technical scheme of the invention, the environment-friendly barrier film wrapping material is prepared by preparing a film from raw materials through lamellar blending.
As a preferable technical scheme of the invention, the laminar blending refers to that polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent are placed in a high-speed mixer to be fully mixed for 20 minutes, then extruded on a double-screw mixer, and granulated by a granulator to obtain laminar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 260-280 ℃, and the rotational speed of the screw is 30-50 rpm.
As a preferable technical scheme of the invention, the environment-friendly barrier film wrapping material is applied to the packaging of medicines and foods.
The invention has the beneficial effects that:
(1) The environment-friendly type barrier film packaging material provided by the invention can effectively prevent oxygen and water vapor in air from penetrating into the package. Can be used for long-time packaging of articles with moisture-proof requirement, and overcomes the defect of poor moisture-proof performance of the existing polyethylene terephthalate film.
(2) The formula of the environment-friendly type barrier film packaging material provided by the invention does not generate byproducts harmful to the environment in the production process, and has the advantages of high production efficiency, low cost and good application prospect.
(3) The composite blocking material with unique formula proportion and the composite dispersing agent have synergistic effect, and the blocking capability of the polyethylene terephthalate is improved by layered blending modification with the polyethylene terephthalate, so that the moisture resistance of the polyethylene terephthalate is effectively improved.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description is given below with reference to the embodiments, structures, features and effects according to the present invention.
Example 1
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent.
The composite barrier material consists of graphene, mica and silicon dioxide.
The mass ratio of the graphene to the mica to the silicon dioxide is 30:15:1.
The particle size of the composite barrier material is 800 meshes.
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the composite barrier material to the composite dispersing agent to the auxiliary agent is 250:30:3:10.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 260 ℃, and the rotational speed of the screw is 50rpm.
Example 2
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent.
The composite barrier material consists of graphene, mica and silicon dioxide.
The mass ratio of the graphene to the mica to the silicon dioxide is 33:17:3.
The particle size of the composite barrier material is 900 meshes.
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the composite barrier material to the composite dispersing agent to the auxiliary agent is 270:40:4:20.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 270 ℃, and the rotational speed of the screw is 40rpm.
Example 3
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent.
The composite barrier material consists of graphene, mica and silicon dioxide.
The mass ratio of the graphene to the mica to the silicon dioxide is 35:20:5.
The particle size of the composite barrier material is 1000 meshes.
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the composite barrier material to the composite dispersing agent to the auxiliary agent is 300:50:5:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 1
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a composite dispersing agent and an auxiliary agent.
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the composite dispersing agent to the auxiliary agent is 300:5:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 2
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a barrier material, a composite dispersing agent and an auxiliary agent.
The barrier material is graphene.
The particle size of the barrier material is 1000 meshes.
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the barrier material to the composite dispersing agent to the auxiliary agent is 300:50:5:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 3
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a barrier material, a composite dispersing agent and an auxiliary agent.
The blocking material is mica.
The particle size of the barrier material is 1000 meshes.
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the barrier material to the composite dispersing agent to the auxiliary agent is 300:50:5:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 4
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a barrier material, a composite dispersing agent and an auxiliary agent.
The barrier material is silicon dioxide.
The particle size of the barrier material is 1000 meshes.
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the barrier material to the composite dispersing agent to the auxiliary agent is 300:50:5:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 5
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a composite barrier material and an auxiliary agent.
The composite barrier material consists of graphene, mica and silicon dioxide.
The mass ratio of the graphene to the mica to the silicon dioxide is 35:20:5.
The particle size of the composite barrier material is 1000 meshes.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the composite barrier material to the auxiliary agent is 300:50:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 6
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a barrier material and an auxiliary agent.
The barrier material is graphene.
The particle size of the barrier material is 1000 meshes.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the barrier material to the auxiliary agent is 300:50:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 7
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a barrier material and an auxiliary agent.
The blocking material is mica.
The particle size of the barrier material is 1000 meshes.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the barrier material to the auxiliary agent is 300:50:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Comparative example 8
An environment-friendly barrier film packaging material comprises polyethylene terephthalate, a barrier material and an auxiliary agent.
The barrier material is silicon dioxide.
The particle size of the barrier material is 1000 meshes.
The auxiliary agent is monoalkoxy titanate.
The mass ratio of the polyethylene terephthalate to the barrier material to the auxiliary agent is 300:50:30.
The environment-friendly type barrier film wrapping material is prepared by placing polyethylene glycol terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent into a high-speed mixer through lamellar blending, fully mixing for 20 minutes, extruding the mixture on a double-screw mixer, and granulating the mixture by a granulator to obtain lamellar blending granules, wherein the temperature of each section and a die opening of a screw of the extruder is 280 ℃, and the rotational speed of the screw is 30rpm.
Performance testing
The products obtained in examples 1 to 3 and comparative examples 1 to 8 were subjected to a film oxygen barrier property test according to GB/T1037-2000, and the products obtained in examples 1 to 3 and comparative examples 1 to 8 were subjected to a water vapor barrier property test according to GB/T1038-2000, and recorded as shown in Table 1 below.
As can be seen from table 1, the oxygen barrier properties and the water vapor barrier properties of examples 1 to 3 were better than those of comparative examples 1 to 8. For comparative examples 1 to 8, comparative example 5 containing a composite barrier material without a composite dispersant was similar to the test results of oxygen barrier properties and water vapor barrier properties of comparative examples 2 to 4 containing a composite dispersant, only a single barrier material, and was superior to comparative examples 6 to 8 containing only a single barrier material, without a composite dispersant; the test results of the oxygen barrier properties and the water vapor barrier properties of comparative example 1, which contained no composite barrier material but a composite dispersant, were the worst.
TABLE 1 oxygen Barrier Properties and Water vapor Barrier Properties test results
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (5)
1. The environment-friendly type barrier film wrapping material is characterized in that the raw materials of the environment-friendly type barrier film wrapping material comprise polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent;
the composite barrier material consists of graphene, mica and silicon dioxide;
The composite dispersing agent is polyethylene wax and white oil with equal mass ratio;
the environment-friendly barrier film packaging material is prepared by preparing a film from raw materials through laminar blending;
The mass ratio of the graphene to the mica to the silicon dioxide is 30-35:15-20:1-5;
The mass ratio of the polyethylene terephthalate to the composite barrier material to the composite dispersing agent to the auxiliary agent is 250-300:30-50:3-5:10-30.
2. The environment-friendly barrier film wrapper according to claim 1, wherein the particle size of the composite barrier material is 800-1000 meshes.
3. The environmental-friendly barrier film wrapper of claim 1, wherein the auxiliary agent is monoalkoxy titanate.
4. The environment-friendly barrier film wrapper according to claim 1, wherein the layered blending is that polyethylene terephthalate, a composite barrier material, a composite dispersing agent and an auxiliary agent are fully mixed in a high-speed mixer for 20 minutes and then extruded on a double-screw mixer, and the mixture is pelletized by a pelletizer to obtain layered blending pellets, wherein the temperature of each section and a die opening of a screw of the extruder is 260-280 ℃, and the rotational speed of the screw is 30-50 rpm.
5. The environment-friendly type barrier film packaging material according to claim 1, which is characterized in that the environment-friendly type barrier film packaging material is applied to packaging of medicines and foods.
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Patent Citations (4)
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| CN103435983A (en) * | 2013-08-06 | 2013-12-11 | 苏州金海薄膜科技发展有限公司 | Transparent colored heat and ultraviolet insulation film and preparation method thereof |
| CN108047660A (en) * | 2017-12-05 | 2018-05-18 | 四川力智久创知识产权运营有限公司 | A kind of polyethylene terephthalate modified material and preparation method thereof |
| CN108822507A (en) * | 2018-04-24 | 2018-11-16 | 宿迁市南京工业大学新材料研究院 | Polylactic acid-based composite sheet material with oxygen barrier and good mechanical properties and preparation method thereof |
| CN110373007A (en) * | 2019-09-02 | 2019-10-25 | 苏州宇希新材料科技有限公司 | A kind of preparation method of high tenacity graphene/compound film composition of PET |
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