A HTNK-based deoxidizer packaging material and preparation method thereof

Abstract

The present invention relates to the technical field of packaging materials, and in particular to a HTNK-based deoxidizer packaging material and a preparation method thereof. The deoxidizer packaging material comprises a PE film layer, wherein both the upper and lower surfaces of the PE film layer are connected to HTNK layers by adhesives, wherein a side of the HTNK layer away from the PE film layer is connected to a PE waterproof and breathable film layer by adhesives; the HTNK layer is a PET dot pattern non-woven fabric layer, and the gram weight of the PET dot pattern non-woven fabric layer is 30-45 g / m 2 The PE film layer is provided with a plurality of air holes in a matrix pattern, and the thickness of the PE film layer is 20-50 μm; the thickness of the PE waterproof and breathable film layer is 10-15 μm. The deoxidizer packaging material of the present invention has both excellent air permeability and excellent mechanical properties, and is effective in use.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging materials, and in particular to a HTNK-based deoxidizer packaging material and a preparation method thereof. Background Art

[0002] Oxygen is a key factor in food spoilage. Most microorganisms thrive in an aerobic environment. Even when the oxygen content in the packaging environment is as low as 2-3%, most aerobic and facultative anaerobic bacteria can still grow and biochemical reactions can continue. Therefore, removing oxygen from packaging is crucial, both for maintaining food color, aroma, and flavor, and for preventing food spoilage.

[0003] Oxygen absorbers, also known as oxygen absorbers or deoxidizers, are packaged products that react with oxygen to reduce the oxygen concentration in sealed food containers for a specified period of time. They are one of the most commonly used and widespread oxygen removal methods in the food industry. Oxygen absorbers are chemical materials whose primary function is to remove oxygen from packaging, thereby preventing moisture, spoilage, and mold. To achieve this function, the selection of deoxidizer packaging materials is crucial.

[0004] Oxygen absorbers are typically packaged in packaging materials that are breathable, allowing the absorber to fully contact and react with the oxygen in the packaging. This breathability ensures the absorber can efficiently absorb oxygen, creating an oxygen-free storage environment for the product.

[0005] Among common deoxidizer packaging materials, non-woven fabrics are highly favored due to their excellent air permeability. However, their overall mechanical properties are weak and easily damaged by external forces, which can lead to deoxidizer leakage during transportation and storage. Therefore, further research is needed on the structure of deoxidizer packaging materials to develop a material that combines excellent air permeability with superior mechanical properties. Summary of the Invention

[0006] The object of the present invention is to provide a HTNK-based deoxidizer packaging material and a preparation method thereof, wherein the deoxidizer packaging material has both excellent air permeability and excellent mechanical properties and has good use effect.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A HTNK-based deoxidizer packaging material, comprising a PE film layer, wherein both upper and lower surfaces of the PE film layer are connected to HTNK layers via adhesive, wherein a side of the HTNK layer away from the PE film layer is connected to a PE waterproof and breathable film layer via adhesive;

[0009] The HTNK layer is a PET dot pattern non-woven fabric layer, and the gram weight of the PET dot pattern non-woven fabric layer is 30-45 g / m 2 ;

[0010] The PE film layer is provided with a plurality of air holes in a matrix, and the thickness of the PE film layer is 20-50 μm;

[0011] The thickness of the PE waterproof and breathable membrane layer is 10-15 μm.

[0012] Preferably, the diameter of the air holes is 0.5-0.8 mm; and the distance between any two adjacent air holes is 1-1.5 times the diameter of the air holes.

[0013] Preferably, the PE film layer comprises the following raw materials in parts by weight: 100 parts of high-density polyethylene, 10-15 parts of metallocene polyethylene, 1-1.6 parts of wrinkled graphene, 3-5.5 parts of modified carbon fiber, 0.1-0.2 parts of silane coupling agent, and 0.1-0.3 parts of antioxidant.

[0014] Preferably, the method for preparing the wrinkled graphene comprises the following steps:

[0015] A graphene oxide aqueous solution having a concentration of 1-3 mg / mL was prepared; the graphene oxide aqueous solution was then ultrasonically treated for 2-3 hours at a power of 500-1000 W;

[0016] The graphene oxide aqueous solution after ultrasonic treatment is placed in a 2-5 mL penicillin bottle, and then placed in liquid nitrogen and frozen for 3-6 minutes; then taken out and placed in a freeze dryer for vacuum freeze drying to obtain the wrinkled graphene.

[0017] Preferably, the preparation method of the modified carbon fiber comprises the following steps: immersing carbon fiber with a length of 1.5-2 mm in silica sol and ultrasonically treating it for 1-2 hours, then taking out the carbon fiber and placing it in a centrifuge for centrifugal treatment for 2-3 minutes, and then vacuum drying it; then placing the obtained carbon fiber in a calcination furnace, heating it to 550-600°C under a nitrogen atmosphere, keeping it warm and calcining it for 2.5-3.5 hours, and cooling it to room temperature to obtain the modified carbon fiber.

[0018] Preferably, the silane coupling agent is at least one of KH550 and KH560; and the antioxidant is antioxidant 168 or antioxidant 1010.

[0019] Preferably, the method for preparing the PE film layer comprises the following steps:

[0020] The wrinkled graphene, modified carbon fiber and silane coupling agent are placed in a high-speed mixer and mixed for 1.5-2 hours, and then the resulting material is evenly mixed with high-density polyethylene, metallocene polyethylene and antioxidant, and granulated by a twin-screw extruder to obtain a masterbatch; the obtained masterbatch is then put into a casting machine for film casting to obtain a PE film;

[0021] Then, a punching device is used to punch a plurality of matrix-shaped air holes on the PE film to obtain a PE film layer.

[0022] Preferably, the twin-screw extruder has five heating sections, and the heating temperatures are 190-195°C, 195-200°C, 200-205°C, 205-210°C, and 210-215°C, respectively.

[0023] As a general inventive concept, the present invention provides a method for preparing an HTNK-based deoxidizer packaging material, comprising the following steps:

[0024] S1: Coat the upper and lower surfaces of the PE film layer with adhesive, then bond the HTNK layer to the upper and lower surfaces of the PE film layer, and then place it in a dry laminating machine for lamination;

[0025] S2: Coating an adhesive on the side of the PE waterproof and breathable membrane layer facing the HTNK layer, bonding it to the corresponding HTNK layer, and then placing it in a dry laminating machine for lamination; then aging at 30-45° C. for 24-30 hours to obtain the deoxidizer packaging material.

[0026] The beneficial effects of the present invention are:

[0027] In the deoxidizer packaging material of the present invention, the upper and lower surfaces of the PE film layer are fixedly connected with PET dotted non-woven fabric layers (HTNK layers). The arrangement of the double-layer PET dotted non-woven fabric layer of appropriate thickness combined with the excellent puncture resistance and other properties of the non-woven fabric can effectively prevent the packaging material from being damaged and leaking powder.

[0028] The present invention aims to enhance the deformation resistance of the deoxidizer packaging material. In the preparation of the PE film layer, wrinkled graphene and modified carbon fibers are used as modifying materials. The wrinkled graphene surface can be firmly embedded in the PE film layer, while the modified carbon fibers have nano-silicon dioxide distributed on their surface, resulting in a high surface roughness, which can also be firmly embedded in the PE film layer. The wrinkled graphene and modified carbon fibers form a dot-line network structure in the PE film layer, which is equivalent to forming a supporting mesh structure in the PE film layer. This significantly improves the mechanical properties of the PE film layer. Even when a large number of air holes are provided in the PE film layer, the PE film layer still maintains a stable supporting mesh structure. This PE film layer can serve as the intermediate skeleton of the deoxidizer packaging material, effectively improving the deformation resistance and strength of the deoxidizer packaging material, making it less susceptible to damage and tearing by external forces. Furthermore, due to the large number of air holes provided in the PE film layer, it can effectively maintain high air permeability.

[0029] In addition, the present invention bonds a PE waterproof and breathable film layer to the outside of a PET dot pattern non-woven fabric layer (HTNK layer). By providing the PE waterproof and breathable film layer, the deoxidizer can be protected and heat sealing of the deoxidizer packaging material is facilitated.

[0030] The deoxidizer packaging material of the present invention has both excellent air permeability and excellent mechanical properties and has good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 Schematic diagram of the structure of the deoxidizer packaging material of the present invention;

[0033] Figure 2 It is a partial top view of the PE film layer of the present invention;

[0034] In the figure: 1, PE film layer; 11, air vents; 2, HTNK layer; 3, PE waterproof and breathable film layer. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Example 1:

[0037] A deoxidizer packaging material based on HTNK, such as Figure 1-2 As shown, it includes a PE film layer 1, and the upper and lower surfaces of the PE film layer 1 are connected to HTNK layers 2 through adhesives, and one side of the HTNK layer 2 away from the PE film layer 1 is connected to a PE waterproof and breathable membrane layer 3 through adhesives.

[0038] HTNK layer 2 is a PET dot pattern non-woven fabric layer with a gram weight of 40g / m 2 .

[0039] The PE film layer 1 is provided with a plurality of air holes 11 in a matrix. The thickness of the PE film layer 1 is 35 μm. The diameter of the air holes 11 is 0.8 mm. The distance between any two adjacent air holes 11 is 1 times the diameter of the air holes 11 .

[0040] The thickness of the PE waterproof and breathable membrane layer 3 is 15 μm.

[0041] In this embodiment, the PE film layer 1 includes the following raw materials in parts by weight: 100 parts of high-density polyethylene, 11 parts of metallocene polyethylene, 1 part of wrinkled graphene, 4.5 parts of modified carbon fiber, 0.2 parts of silane coupling agent KH550, and 0.1 parts of antioxidant 168.

[0042] The preparation method of the wrinkled graphene comprises the following steps:

[0043] A graphene oxide aqueous solution with a concentration of 3 mg / mL was prepared; the graphene oxide aqueous solution was then ultrasonically treated for 3 hours at a power of 800 W;

[0044] The graphene oxide aqueous solution after ultrasonic treatment was placed in a 2 mL penicillin bottle and then frozen in liquid nitrogen for 6 minutes; then taken out and placed in a freeze dryer for vacuum freeze drying to obtain wrinkled graphene.

[0045] The preparation method of the modified carbon fiber includes the following steps: immersing a carbon fiber with a length of 1.5 mm in a silica sol with a solid content of 25%, and ultrasonically treating it for 2 hours, then taking out the carbon fiber, placing it in a centrifuge for centrifugal treatment for 3 minutes, and then vacuum drying it; then placing the obtained carbon fiber in a calcination furnace, heating it to 570°C under a nitrogen atmosphere, keeping it warm for 3.5 hours, and cooling it to room temperature to obtain the modified carbon fiber.

[0046] The preparation method of the PE film layer 1 specifically comprises the following steps:

[0047] The wrinkled graphene, modified carbon fiber and silane coupling agent KH550 were placed in a high-speed mixer and mixed for 2 hours. The obtained material was then evenly mixed with high-density polyethylene, metallocene polyethylene and antioxidant 168, and granulated through a twin-screw extruder to obtain a masterbatch; the twin-screw extruder had 5 heating sections, and the heating temperatures were 195°C, 200°C, 205°C, 210°C and 215°C respectively.

[0048] The obtained masterbatch is then put into a casting machine to be cast into a film to obtain a PE film; and then a punching device is used to punch a plurality of matrix-like air holes 11 on the PE film to obtain a PE film layer 1.

[0049] The preparation method of the HTNK-based deoxidizer packaging material in this embodiment includes the following steps:

[0050] S1: Coating adhesive on the upper and lower surfaces of the PE film layer 1, then bonding the HTNK layer 2 to the upper and lower surfaces of the PE film layer 1, and then placing it in a dry laminating machine for lamination;

[0051] S2: Coating an adhesive on the side of the PE waterproof and breathable membrane layer 3 facing the HTNK layer 2 and bonding it to the corresponding HTNK layer 2, then placing it in a dry laminating machine for lamination; and then aging it at 30° C. for 30 hours to obtain the deoxidizer packaging material.

[0052] Example 2:

[0053] A deoxidizer packaging material based on HTNK, such as Figure 1-2 As shown, it includes a PE film layer 1, and the upper and lower surfaces of the PE film layer 1 are connected to HTNK layers 2 through adhesives, and one side of the HTNK layer 2 away from the PE film layer 1 is connected to a PE waterproof and breathable membrane layer 3 through adhesives.

[0054] HTNK layer 2 is a PET dot pattern non-woven fabric layer with a gram weight of 45g / m 2 .

[0055] The PE film layer 1 is provided with a plurality of air holes 11 in a matrix. The thickness of the PE film layer 1 is 35 μm. The diameter of the air holes 11 is 0.5 mm. The distance between any two adjacent air holes 11 is 1 times the diameter of the air holes 11 .

[0056] The thickness of the PE waterproof and breathable membrane layer 3 is 15 μm.

[0057] In this embodiment, the PE film layer 1 includes the following raw materials in parts by weight: 100 parts of high-density polyethylene, 11 parts of metallocene polyethylene, 1.6 parts of wrinkled graphene, 4.5 parts of modified carbon fiber, 0.2 parts of silane coupling agent KH550, and 0.3 parts of antioxidant 168.

[0058] The preparation method of the wrinkled graphene comprises the following steps:

[0059] A graphene oxide aqueous solution with a concentration of 3 mg / mL was prepared; the graphene oxide aqueous solution was then ultrasonically treated for 2 hours at a power of 1000 W; the ultrasonically treated graphene oxide aqueous solution was placed in a 5 mL penicillin bottle, and then frozen in liquid nitrogen for 6 minutes; then taken out and placed in a freeze dryer for vacuum freeze drying to obtain wrinkled graphene.

[0060] The preparation method of the modified carbon fiber includes the following steps: immersing a carbon fiber with a length of 1.5 mm in a silica sol with a solid content of 25%, and ultrasonically treating it for 2 hours, then taking out the carbon fiber, placing it in a centrifuge for centrifugal treatment for 2 minutes, and then vacuum drying it; then placing the obtained carbon fiber in a calcination furnace, heating it to 600°C under a nitrogen atmosphere, keeping it warm and calcining it for 3.5 hours, and cooling it to room temperature to obtain the modified carbon fiber.

[0061] The preparation method of the PE film layer 1 specifically comprises the following steps:

[0062] The wrinkled graphene, modified carbon fiber and silane coupling agent KH550 were placed in a high-speed mixer and mixed for 1.5 hours. The obtained material was then evenly mixed with high-density polyethylene, metallocene polyethylene and antioxidant 168, and granulated through a twin-screw extruder to obtain a masterbatch; the twin-screw extruder had 5 heating sections, and the heating temperatures were 190°C, 195°C, 200°C, 205°C and 210°C respectively.

[0063] The obtained masterbatch is then put into a casting machine to be cast into a film to obtain a PE film; and then a punching device is used to punch a plurality of matrix-like air holes 11 on the PE film to obtain a PE film layer 1.

[0064] The preparation method of the HTNK-based deoxidizer packaging material in this embodiment includes the following steps:

[0065] S1: Coating adhesive on the upper and lower surfaces of the PE film layer 1, then bonding the HTNK layer 2 to the upper and lower surfaces of the PE film layer 1, and then placing it in a dry laminating machine for lamination;

[0066] S2: Coating an adhesive on the side of the PE waterproof and breathable membrane layer 3 facing the HTNK layer 2 and bonding it to the corresponding HTNK layer 2, then placing it in a dry laminating machine for lamination; and then aging it at 45° C. for 24 hours to obtain the deoxidizer packaging material.

[0067] Example 3:

[0068] A deoxidizer packaging material based on HTNK, such as Figure 1-2 As shown, it includes a PE film layer 1, and the upper and lower surfaces of the PE film layer 1 are connected to HTNK layers 2 through adhesives, and one side of the HTNK layer 2 away from the PE film layer 1 is connected to a PE waterproof and breathable membrane layer 3 through adhesives.

[0069] HTNK layer 2 is a PET dot pattern non-woven fabric layer with a gram weight of 30g / m 2 .

[0070] The PE film layer 1 is provided with a plurality of air holes 11 in a matrix. The thickness of the PE film layer 1 is 35 μm. The diameter of the air holes 11 is 0.7 mm. The distance between any two adjacent air holes 11 is 1.5 times the diameter of the air holes 11 .

[0071] The thickness of the PE waterproof and breathable membrane layer 3 is 15 μm.

[0072] In this embodiment, the PE film layer 1 includes the following raw materials in parts by weight: 100 parts of high-density polyethylene, 10 parts of metallocene polyethylene, 1 part of wrinkled graphene, 5.5 parts of modified carbon fiber, 0.1 part of silane coupling agent KH550, and 0.1 part of antioxidant 168.

[0073] The preparation method of the wrinkled graphene comprises the following steps:

[0074] A graphene oxide aqueous solution with a concentration of 2 mg / mL was prepared; the graphene oxide aqueous solution was then ultrasonically treated for 3 hours at a power of 500 W;

[0075] The graphene oxide aqueous solution after ultrasonic treatment was placed in a 5 mL penicillin bottle, and then frozen in liquid nitrogen for 6 minutes; then taken out and placed in a freeze dryer for vacuum freeze drying to obtain wrinkled graphene.

[0076] The preparation method of the modified carbon fiber includes the following steps: immersing a carbon fiber with a length of 2 mm in a silica sol with a solid content of 25%, and ultrasonically treating it for 1.5 hours, then taking out the carbon fiber, placing it in a centrifuge for centrifugal treatment for 3 minutes, and then vacuum drying it; then placing the obtained carbon fiber in a calcination furnace, heating it to 580°C under a nitrogen atmosphere, keeping it warm for 2.5 hours, and cooling it to room temperature to obtain the modified carbon fiber.

[0077] The preparation method of PE film layer 1 is the same as that of Example 1.

[0078] The preparation method of the HTNK-based deoxidizer packaging material in this embodiment is the same as that in Example 1.

[0079] Example 4:

[0080] A deoxidizer packaging material based on HTNK, such as Figure 1-2 As shown, it includes a PE film layer 1, and the upper and lower surfaces of the PE film layer 1 are connected to HTNK layers 2 through adhesives, and one side of the HTNK layer 2 away from the PE film layer 1 is connected to a PE waterproof and breathable membrane layer 3 through adhesives.

[0081] HTNK layer 2 is a PET dot pattern non-woven fabric layer with a gram weight of 40g / m 2 .

[0082] The PE film layer 1 is provided with a plurality of air holes 11 in a matrix. The thickness of the PE film layer 1 is 35 μm. The diameter of the air holes 11 is 0.6 mm. The distance between any two adjacent air holes 11 is 1.2 times the diameter of the air holes 11 .

[0083] The thickness of the PE waterproof and breathable membrane layer 3 is 15 μm.

[0084] In this embodiment, the PE film layer 1 includes the following raw materials in parts by weight: 100 parts of high-density polyethylene, 15 parts of metallocene polyethylene, 1.3 parts of wrinkled graphene, 3 parts of modified carbon fiber, 0.15 parts of silane coupling agent KH550, and 0.2 parts of antioxidant 168.

[0085] The preparation method of the wrinkled graphene comprises the following steps:

[0086] A graphene oxide aqueous solution with a concentration of 1 mg / mL was prepared; the graphene oxide aqueous solution was then ultrasonically treated for 3 hours at a power of 1000 W;

[0087] The graphene oxide aqueous solution after ultrasonic treatment was placed in a 2 mL penicillin bottle and then frozen in liquid nitrogen for 3 minutes; then taken out and placed in a freeze dryer for vacuum freeze drying to obtain wrinkled graphene.

[0088] The preparation method of the modified carbon fiber includes the following steps: immersing a carbon fiber with a length of 2 mm in a silica sol with a solid content of 25%, and ultrasonically treating it for 1 hour, then taking out the carbon fiber, placing it in a centrifuge for centrifugal treatment for 3 minutes, and then vacuum drying it; then placing the obtained carbon fiber in a calcination furnace, heating it to 550°C under a nitrogen atmosphere, keeping it warm for 3 hours, and cooling it to room temperature to obtain the modified carbon fiber.

[0089] The preparation method of PE film layer 1 is the same as that of Example 2.

[0090] The preparation method of the HTNK-based deoxidizer packaging material in this embodiment is the same as that in Example 2.

[0091] Example 5:

[0092] Different from Example 1, the thickness of the PE film layer 1 is 50 μm; the thickness of the PE waterproof and breathable membrane layer 3 is 10 μm.

[0093] Example 6:

[0094] Different from Example 1, the thickness of the PE film layer 1 is 20 μm; the thickness of the PE waterproof and breathable membrane layer 3 is 12 μm.

[0095] Example 7:

[0096] Different from Example 1, the thickness of the PE film layer 1 is 40 μm; the thickness of the PE waterproof and breathable membrane layer 3 is 12 μm.

[0097] Comparative Example 1:

[0098] Different from Example 4, the PE film layer includes the following raw materials in parts by weight: 100 parts of high-density polyethylene, 15 parts of metallocene polyethylene, 4.3 parts of wrinkled graphene, 0.15 parts of silane coupling agent KH550, and 0.2 parts of antioxidant 168.

[0099] Comparative Example 2:

[0100] Different from Example 4, the PE film layer includes the following raw materials in parts by weight: 100 parts of high-density polyethylene, 15 parts of metallocene polyethylene, 4.3 parts of modified carbon fiber, 0.15 parts of silane coupling agent KH550, and 0.2 parts of antioxidant 168.

[0101] Comparative Example 3:

[0102] Different from Example 4, the PE film layer 1 includes the following raw materials in parts by weight: 100 parts of high-density polyethylene, 15 parts of metallocene polyethylene, 1.3 parts of graphene, 3 parts of carbon fiber, 0.15 parts of silane coupling agent KH550, and 0.2 parts of antioxidant 168.

[0103] Performance testing:

[0104] The elongation at break and tensile strength of the PE films prepared in Examples 1-4 and Comparative Examples 1-3 were tested in accordance with GB / T 1040.1-2018, "Determination of Tensile Properties of Plastics." The specific test results are shown in Table 1.

[0105] Table 1:

[0106] Elongation at break / % Tensile strength / MPa Example 1 555 52.2 Example 2 583 48.8 Example 3 565 48.2 Example 4 540 47.9 Comparative Example 1 430 42.1 Comparative Example 2 467 40.2 Comparative Example 3 393 38.7

[0107] It can be seen from Table 1 that the deoxidizer packaging material prepared by the method of the present invention has excellent mechanical properties. By comparing Comparative Examples 1-3 with Example 4, it can be seen that the wrinkled graphene prepared by the method of the present invention and the modified carbon fiber are used to prepare the PE film layer, which can significantly improve the elongation at break and tensile strength.

[0108] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A deoxidizer packaging material based on HTNK, characterized in that: The deoxidizer packaging material comprises a PE film layer (1), wherein the upper and lower surfaces of the PE film layer (1) are connected to HTNK layers (2) via adhesive, wherein a side of the HTNK layer (2) away from the PE film layer (1) is connected to a PE waterproof and breathable film layer (3) via adhesive; The HTNK layer (2) is a PET dot pattern non-woven fabric layer, and the gram weight of the PET dot pattern non-woven fabric layer is 30-45 g / m 2 ; The PE film layer (1) is provided with a plurality of air holes (11) in a matrix pattern, and the thickness of the PE film layer (1) is 20-50 μm; The thickness of the PE waterproof and breathable membrane layer (3) is 10-15 μm; The PE film layer (1) comprises the following raw materials in parts by weight: 100 parts of high-density polyethylene, 10-15 parts of metallocene polyethylene, 1-1.6 parts of wrinkled graphene, 3-5.5 parts of modified carbon fiber, 0.1-0.2 parts of silane coupling agent, and 0.1-0.3 parts of antioxidant; The preparation method of the wrinkled graphene comprises the following steps: A graphene oxide aqueous solution having a concentration of 1-3 mg / mL was prepared; the graphene oxide aqueous solution was then ultrasonically treated for 2-3 hours at a power of 500-1000 W; The graphene oxide aqueous solution after ultrasonic treatment is placed in a 2-5 mL penicillin bottle, and then placed in liquid nitrogen and frozen for 3-6 minutes; then taken out and placed in a freeze dryer for vacuum freeze drying to obtain the wrinkled graphene; The preparation method of the modified carbon fiber comprises the following steps: immersing carbon fiber with a length of 1.5-2 mm in silica sol and ultrasonically treating it for 1-2 hours, then taking out the carbon fiber, placing it in a centrifuge for centrifugal treatment for 2-3 minutes, and then vacuum drying it; then placing the obtained carbon fiber in a calcination furnace, heating it to 550-600° C. under a nitrogen atmosphere, keeping the temperature and calcining it for 2.5-3.5 hours, and cooling it to room temperature to obtain the modified carbon fiber.

2. The HTNK-based deoxidizer packaging material according to claim 1, wherein The aperture of the air vent (11) is 0.5-0.8 mm; the distance between any two adjacent air vents (11) is 1-1.5 times the aperture of the air vent (11).

3. The HTNK-based deoxidizer packaging material according to claim 1, wherein The silane coupling agent is at least one of KH550 and KH560; the antioxidant is antioxidant 168 or antioxidant 1010.

4. The HTNK-based deoxidizer packaging material according to claim 1, wherein The preparation method of the PE film layer (1) comprises the following steps: The wrinkled graphene, modified carbon fiber and silane coupling agent are placed in a high-speed mixer and mixed for 1.5-2 hours, and then the resulting material is evenly mixed with high-density polyethylene, metallocene polyethylene and antioxidant, and granulated by a twin-screw extruder to obtain a masterbatch; the obtained masterbatch is then put into a casting machine for film casting to obtain a PE film; Then, a punching device is used to punch a plurality of matrix-shaped air holes (11) on the PE film to obtain a PE film layer (1).

5. The HTNK-based deoxidizer packaging material according to claim 4, characterized in that: The twin-screw extruder has five heating sections, and the heating temperatures are 190-195°C, 195-200°C, 200-205°C, 205-210°C, and 210-215°C, respectively.

6. A method for preparing the HTNK-based deoxidizer packaging material according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: coating the upper and lower surfaces of the PE film layer (1) with adhesive, then bonding the HTNK layer (2) to the upper and lower surfaces of the PE film layer (1), and then placing the layers in a dry laminating machine for lamination; S2: Coating the adhesive on the side of the PE waterproof and breathable film layer (3) facing the HTNK layer (2), and bonding it to the corresponding HTNK layer (2), and then placing it in a dry laminating machine for lamination; then aging at 30-45° C. for 24-30 hours to obtain the deoxidizer packaging material.

Images