Box body material, preparation method thereof and application of box body material to box body

Abstract

The invention relates to the technical field of box body materials, in particular to a box body material and a preparation method and application thereof to a box body, by preparing a modified damping agent and a modified flame retardant and adding a degradable polymer into the modified damping agent and the modified flame retardant, when the box body material is applied to a sound box shell, the damping effect of the sound box shell can be well guaranteed; the environment-friendly, non-toxic and harmless box shell can be guaranteed, non-toxic and harmless treatment in the box body raw material preparation process is achieved, polyethylene glycol diacrylate and maleic anhydride grafted polyethylene are mixed, poisonous and harmful gas generated in the maleic anhydride grafted polyethylene can be effectively adsorbed during high-temperature treatment, and the environment-friendly, non-toxic and harmless box shell is obtained. The dispersity of the internal toxicity of the maleic anhydride grafted polyethylene is reduced; polycarbonate and polyethylene terephthalate are weighed in parts by weight, and are added into a high-speed mixer together with styrene butadiene rubber and ethylene-propylene copolymer, so that when the prepared box body material is applied to the sound box shell, the high-damping, high-flame-retardant and environment-friendly effects can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of box materials, and in particular to a box material, a preparation method thereof, and an application of the box material to a box. Background Art

[0002] The cabinet materials mainly include plastic, wood and metal. Plastic is a commonly used material for making cabinets, especially in speaker manufacturing. The advantages of plastic are easy processing, low cost, and the ability to be made into cabinets with beautiful appearance. Cabinet materials are also often used on speaker cabinets, mainly for shock absorption of speaker cabinets.

[0003] Application No. CN201511027989.6 discloses a high impact and cold-resistant ABS box material and its preparation method and application. The ABS box material is composed of the following components by weight: 62-76 parts of epoxy resin, 10-15 parts of maleic anhydride grafted POE, 10-15 parts of ABS high-glue powder, 3-5 parts of inorganic nanoparticles, 0.1-0.2 parts of surface treatment agent, 0.5-1 parts of antioxidant, and 1-2 parts of lubricant; the ABS box material is injection molded by an injection molding machine or extruded by an extrusion blister molding machine to obtain an ABS box. The present invention modifies ABS by combining physical and chemical methods in terms of raw materials and specific process parameters in the processing process. The prepared ABS box material not only has high impact resistance and cold resistance, but also retains the performance advantages of epoxy resin itself, and has the advantages of impact resistance, cold resistance, and convenient molding and processing.

[0004] After searching the above patents, it was found that the box material still has some shortcomings when used in the audio box: 1. It is difficult to ensure the shock absorption of the audio box shell when the box material is used on the audio box shell. Poor shock absorption will cause the speaker to produce excess vibration during playback, which will cause sound distortion. The resonance of the speaker itself will damage the sound quality, and even produce a lot of noise if it is not handled properly. Resonance will not only cover up the details of the music, but also make the sound sound turbid and unclear; 2. The flame retardant performance of the box material is weak. In the event of a fire or high temperature, the electronic components and circuits inside the audio may be burned due to high temperature, causing the equipment to fail completely. Non-flame retardant materials are easy to soften and deform at high temperatures, which will cause damage to the structure of the audio box shell and affect its stability and durability; 3. Materials with poor shock absorption may cause pollution to the environment when discarded, which does not meet modern environmental protection requirements. Therefore, how to improve the technical defects of the above-mentioned protective film has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] Technical issues solved In view of the above-mentioned shortcomings of the prior art, the present invention provides a box material and a preparation method thereof and application in a box, which can effectively solve the problems of weak shock absorption, weak flame retardancy and environmental pollution of the box material in the prior art.

[0006] Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for preparing a box material, the preparation method comprising: Step 1: weigh nano masterbatch, tetraethyl silicate and surface treatment agent by weight and add them into a high-speed mixer to prepare a modified shock absorber, and perform surface treatment at 125° C. for 10 to 15 minutes; Step 2: Weigh the modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, compatibilizer and lubricant according to weight, add the degradable polymer into the above-mentioned high-speed mixer, mix well and evenly to obtain a mixture; Step 3: preparing a modified flame retardant, and mixing the mixture with the modified flame retardant to obtain a modified mixture; Step 4: feeding the modified mixed material into a twin-screw extruder for extrusion and granulation to obtain a highly shock-absorbing, highly flame-retardant and environmentally friendly box material.

[0007] Furthermore, in the extrusion granulation process in step 4, the head temperature is 190°C to 200°C, the barrel temperature is 170°C to 190°C, the screw aspect ratio is 36 to 40:1, and the screw speed is 230 to 250r / min.

[0008] Furthermore, the preparation steps of the modified shock absorber are: Step 1: Weighing polycarbonate and polyethylene terephthalate according to weight, adding them together with styrene-butadiene rubber and ethylene-propylene copolymer into a high-speed mixer to form a "sea-island" structure, thereby obtaining a modified polyester-polycarbonate copolymer; Step 2: adding metal foil and modified polyester-polycarbonate copolymer for lamination; Step 3: Finally, add polylactic acid and polyhydroxyalkanoate, heat treat at 170° C. to 190° C., stir for 10 to 15 minutes, and obtain a modified shock absorber.

[0009] Furthermore, the weight ratio of the polycarbonate to the polyethylene terephthalate is 1-3:1-3.

[0010] Furthermore, the degradable polymer in step 2 includes at least one of polypropylene, polyethylene glycol diacrylate, poly-ε-caprolactone, high-density polyethylene, low-density polyethylene, ethylene-vinyl acetate copolymer, polyester, polycarbonate and polyphenylene sulfide.

[0011] Furthermore, the preparation steps of the modified flame retardant in step three are: Step I: Glycidyl methacrylate is used as a main monomer and divinylbenzene is used as a crosslinking agent to synthesize glycidyl methacrylate-divinylbenzene copolymer microspheres by suspension polymerization, and polyethylene glycol is introduced on the surface of the microspheres to obtain modified microspheres; Step II: The modified microspheres are mixed in polydimethylsiloxane for coating, and then high-impact polystyrene is mixed with aluminum hydroxide, red phosphorus, phosphate flame retardant and expandable graphite to obtain a modified flame retardant.

[0012] Furthermore, the nano masterbatch is at least one of nano calcium carbonate, nano barium sulfate and nano talc; The surface treatment agent is at least one of a silane coupling agent, an aluminate coupling agent, a titanate coupling agent, polytetrafluoroethylene, an electrostatic spray treatment agent and a physical vapor deposition treatment agent.

[0013] Furthermore, the antioxidant is at least one of antioxidant 1010, antioxidant 168, antioxidant 626, antioxidant 1098, antioxidant 1076, thiodipropionate and antioxidant 264; The lubricant is at least one of polyethylene wax, stearic acid, paraffin wax and oxidized wax; The compatibilizer includes at least one of an acrylic compatibilizer, maleic anhydride grafted polyethylene, a low molecular weight compatibilizer and an isocyanate compatibilizer.

[0014] A box material, comprising: 3 to 5 parts of nano masterbatch, 1 to 2 parts of tetraethyl silicate, 0.1 to 0.2 parts of surface treatment agent, 1 to 2 parts of modified shock absorber, 60 to 75 parts of epoxy resin, 10 to 15 parts of maleic anhydride grafted polyethylene, 0.5 to 1 parts of aluminum hydroxide, 0.5 to 1 parts of magnesium hydroxide, 0.2 to 0.6 parts of antioxidant, 1 to 3 parts of modified flame retardant, 2 to 5 parts of degradable polymer, 0.5 to 0.8 parts of compatibilizer and 0.2 to 0.5 parts of lubricant.

[0015] The invention discloses an application of a box material, which is prepared by a method for preparing the box material. The box material is used for preparing the box material, and the box material is injection molded by an injection molding machine or extruded by an extrusion blister molding machine.

[0016] Beneficial Effects The present invention provides a box material and a preparation method thereof and application in a box. Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses polycarbonate and polyethylene terephthalate as raw materials, and adds styrene-butadiene rubber and ethylene-propylene copolymer to prepare a modified shock absorber. When preparing the box material, the internal polycarbonate and polyethylene terephthalate are modified to form a "sea-island" structure, which effectively absorbs impact energy and improves the shock absorption performance of the box material. By laminating and compounding the metal foil and the modified polyester-polycarbonate copolymer, the prepared box material can form a multilayer structure material with excellent shock absorption performance, which helps the box material dissipate vibration energy and further improves the shock absorption effect. 2. The present invention mixes glycidyl methacrylate and divinylbenzene, adds polyethylene glycol to obtain modified microspheres after the mixture, and mixes the modified microspheres in polydimethylsiloxane for coating, so that the compatibility between different polymers can be improved during the preparation of the box material, thereby enhancing the adsorption strength, and by mixing high-impact polystyrene with aluminum hydroxide, red phosphorus, phosphate flame retardant and expandable graphite, the box material can release crystal water, thereby absorbing the heat generated by the box material, reducing the surface temperature of the box material, thereby inhibiting the combustion reaction of the box material, and synthesizing and modifying together to achieve efficient flame retardancy of the box material; 3. The present invention achieves modification by adding degradable polymers, wherein the polylactic acid and polyhydroxyalkanoate in the degradable polymers are mixed with polyethylene glycol diacrylate, so that the maleic anhydride grafted polyethylene increases its adsorption capacity for toxic gases during high-temperature treatment, reduces the generation of toxic gases, and reduces the environmental impact during the preparation of the box material, which helps to reduce the pollution of the box material to the environment, achieves the environmental protection effect of the box material preparation, and has strong practicality. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention will be further described below in conjunction with the embodiments.

[0019] Example 1 A method for preparing a box material in this embodiment, the preparation method is: Step 1: weigh nano masterbatch, tetraethyl silicate and surface treatment agent by weight and add them into a high-speed mixer to prepare a modified shock absorber, and perform surface treatment at 125° C. for 10 minutes; The preparation steps of the modified shock absorber are: Step 1: Weighing polycarbonate and polyethylene terephthalate according to weight, adding them together with styrene-butadiene rubber and ethylene-propylene copolymer into a high-speed mixer to form a "sea-island" structure, thereby obtaining a modified polyester-polycarbonate copolymer; Step 2: adding metal foil and modified polyester-polycarbonate copolymer for lamination; Step 3: Finally, polylactic acid and polyhydroxyalkanoate are added, the heat treatment temperature is 170°C, and stirred for 10 minutes to obtain a modified shock absorber; Step 2: Weigh the modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, compatibilizer and lubricant according to weight, add the degradable polymer into the above-mentioned high-speed mixer, mix well and evenly to obtain a mixture; The degradable polymer includes at least one of polypropylene, polyethylene glycol diacrylate, poly-ε-caprolactone, high-density polyethylene, low-density polyethylene, ethylene-vinyl acetate copolymer, polyester, polycarbonate and polyphenylene sulfide; Step 3: preparing a modified flame retardant, and mixing the mixture with the modified flame retardant to obtain a modified mixture; The preparation steps of the modified flame retardant are: Step I: Glycidyl methacrylate is used as a main monomer and divinylbenzene is used as a crosslinking agent to synthesize glycidyl methacrylate-divinylbenzene copolymer microspheres by suspension polymerization, and polyethylene glycol is introduced on the surface of the microspheres to obtain modified microspheres; Step II: mixing the modified microspheres in polydimethylsiloxane for coating, and then mixing high-impact polystyrene with aluminum hydroxide, red phosphorus, phosphate flame retardant and expandable graphite to obtain a modified flame retardant; Step 4: putting the modified mixed material into a twin-screw extruder for extrusion and granulation to obtain a highly shock-absorbing, highly flame-retardant and environmentally friendly box material; In the extrusion granulation process in step 4, the die temperature is 190°C, the barrel temperature is 170°C, the screw aspect ratio is 36:1, and the screw speed is 230r / min; A box material comprises nano masterbatch, tetraethyl silicate, surface treatment agent, modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, modified flame retardant, degradable polymer, compatibilizer and lubricant.

[0020] Example 2 A method for preparing a box material in this embodiment, the preparation method is: Step 1: weigh nano masterbatch, tetraethyl silicate and surface treatment agent by weight and add them into a high-speed mixer to prepare a modified shock absorber, and perform surface treatment at 125° C. for 12.5 minutes; The preparation steps of the modified shock absorber are: Step 1: Weighing polycarbonate and polyethylene terephthalate according to weight, adding them together with styrene-butadiene rubber and ethylene-propylene copolymer into a high-speed mixer to form a "sea-island" structure, thereby obtaining a modified polyester-polycarbonate copolymer; Step 2: adding metal foil and modified polyester-polycarbonate copolymer for lamination; Step 3: Finally, polylactic acid and polyhydroxyalkanoate are added, the heat treatment temperature is 180°C, and stirred for 12.5 minutes to obtain a modified shock absorber; Step 2: Weigh the modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, compatibilizer and lubricant according to weight, add the degradable polymer into the above-mentioned high-speed mixer, mix well and evenly to obtain a mixture; The degradable polymer includes at least one of polypropylene, polyethylene glycol diacrylate, poly-ε-caprolactone, high-density polyethylene, low-density polyethylene, ethylene-vinyl acetate copolymer, polyester, polycarbonate and polyphenylene sulfide; Step 3: preparing a modified flame retardant, and mixing the mixture with the modified flame retardant to obtain a modified mixture; The preparation steps of the modified flame retardant are: Step I: Glycidyl methacrylate is used as a main monomer and divinylbenzene is used as a crosslinking agent to synthesize glycidyl methacrylate-divinylbenzene copolymer microspheres by suspension polymerization, and polyethylene glycol is introduced on the surface of the microspheres to obtain modified microspheres; Step II: mixing the modified microspheres in polydimethylsiloxane for coating, and then mixing high-impact polystyrene with aluminum hydroxide, red phosphorus, phosphate flame retardant and expandable graphite to obtain a modified flame retardant; Step 4: putting the modified mixed material into a twin-screw extruder for extrusion and granulation to obtain a highly shock-absorbing, highly flame-retardant and environmentally friendly box material; In the extrusion granulation process in step 4, the head temperature is 195°C, the barrel temperature is 180°C, the screw aspect ratio is 38:1, and the screw speed is 240r / min.

[0021] A box material comprises nano masterbatch, tetraethyl silicate, surface treatment agent, modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, modified flame retardant, degradable polymer, compatibilizer and lubricant.

[0022] Example 3 A method for preparing a box material in this embodiment, the preparation method is: Step 1: weigh nano masterbatch, tetraethyl silicate and surface treatment agent by weight and add them into a high-speed mixer to prepare a modified shock absorber, and perform surface treatment at 125° C. for 15 minutes; The preparation steps of the modified shock absorber are: Step 1: Weighing polycarbonate and polyethylene terephthalate according to weight, adding them together with styrene-butadiene rubber and ethylene-propylene copolymer into a high-speed mixer to form a "sea-island" structure, thereby obtaining a modified polyester-polycarbonate copolymer; Step 2: adding metal foil and modified polyester-polycarbonate copolymer for lamination; Step 3: Finally, polylactic acid and polyhydroxyalkanoate are added, the heat treatment temperature is 190°C, and stirred for 15 minutes to obtain a modified shock absorber; Step 2: Weigh the modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, compatibilizer and lubricant according to weight, add the degradable polymer into the above-mentioned high-speed mixer, mix well and evenly to obtain a mixture; The degradable polymer includes at least one of polypropylene, polyethylene glycol diacrylate, poly-ε-caprolactone, high-density polyethylene, low-density polyethylene, ethylene-vinyl acetate copolymer, polyester, polycarbonate and polyphenylene sulfide; Step 3: preparing a modified flame retardant, and mixing the mixture with the modified flame retardant to obtain a modified mixture; The preparation steps of the modified flame retardant are: Step I: Glycidyl methacrylate is used as a main monomer and divinylbenzene is used as a crosslinking agent to synthesize glycidyl methacrylate-divinylbenzene copolymer microspheres by suspension polymerization, and polyethylene glycol is introduced on the surface of the microspheres to obtain modified microspheres; Step II: mixing the modified microspheres in polydimethylsiloxane for coating, and then mixing high-impact polystyrene with aluminum hydroxide, red phosphorus, phosphate flame retardant and expandable graphite to obtain a modified flame retardant; Step 4: putting the modified mixed material into a twin-screw extruder for extrusion and granulation to obtain a highly shock-absorbing, highly flame-retardant and environmentally friendly box material; In the extrusion granulation process in step 4, the head temperature is 200°C, the barrel temperature is 190°C, the screw aspect ratio is 40:1, and the screw speed is 250r / min.

[0023] A box material comprises nano masterbatch, tetraethyl silicate, surface treatment agent, modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, modified flame retardant, degradable polymer, compatibilizer and lubricant.

[0024] Comparative Example 1 The box material, preparation method and application on the box provided in this comparative example are roughly the same as those in Example 1, with the main difference being that in this comparative example 1, the modified shock absorber in Example 1 is replaced with unmodified polycarbonate and polyethylene terephthalate.

[0025] Comparative Example 2 The box material and its preparation method and application in the box provided in this comparative example are roughly the same as those in Example 1, with the main difference being that the degradable polymer in Example 1 is replaced by maleic anhydride grafted polyethylene in this comparative example 2.

[0026] Comparative Example 3 The box material, preparation method and application on the box provided in this comparative example are roughly the same as those in Example 1, with the main difference being that in this comparative example 2, the modified flame retardant in Example 1 is replaced with unmodified high-impact polystyrene.

[0027] Performance Testing The box materials prepared in Examples 1 to 3 and Comparative Examples 1 to 3 are marked as Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2 and Comparative Example 3, respectively, and then the performance of Examples 1 to 3 and Comparative Examples 1 to 3 is tested, and the specific testing methods and test items are as follows: 1. The shock absorption strength of Examples 1 to 3 and Comparative Examples 1 to 3 was tested on a universal material testing machine according to the standard of IEC 62368-1, and the obtained data are recorded in Table 1; 2. Referring to the standard of IEC 62368-1, the flame retardant strength of Examples 1 to 3 and Comparative Examples 1 to 3 was tested, and the obtained data are recorded in Table 1; 3. Referring to the ISO14000 environmental management standard, the environmental protection performance of Examples 1 to 3 and Comparative Examples 1 to 3 was tested. During the test, the box materials in Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to exhaust gas treatment respectively, and the environmental protection level was obtained during the decomposition process. "The more it is, the higher the environmental protection intensity is, and vice versa, the weaker the environmental protection intensity is. The obtained data are recorded in Table 1.

[0028] Table 1

[0029] It can be seen from the data in Table 1 that the shock absorbing strength, flame retardant strength and environmental protection performance of the box materials in Examples 1 to 3 are higher than those in Comparative Examples 1 to 3, indicating that the box materials in Examples 1 to 3 have better shock absorbing performance. Secondly, the flame retardant performance of the box materials in Examples 1 to 3 is better, which means that the box materials in Examples 1 to 3 have better environmental protection performance and mechanical properties. Therefore, it is shown that a box material provided in the present invention, a preparation method thereof and the application on the box have better market application prospects and can be more suitable for the audio box shell material market.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] 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 the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing a box material, characterized in that: The preparation method is: Step 1: weigh nano masterbatch, tetraethyl silicate and surface treatment agent by weight and add them into a high-speed mixer to prepare a modified shock absorber, and perform surface treatment at 125° C. for 10 to 15 minutes; Step 2: Weigh the modified shock absorber, epoxy resin, maleic anhydride grafted polyethylene, aluminum hydroxide, magnesium hydroxide, antioxidant, compatibilizer and lubricant according to weight, add the degradable polymer into the above-mentioned high-speed mixer, mix well and evenly to obtain a mixture; Step 3: preparing a modified flame retardant, and mixing the mixture with the modified flame retardant to obtain a modified mixture; Step 4: feeding the modified mixed material into a twin-screw extruder for extrusion and granulation to obtain a highly shock-absorbing, highly flame-retardant and environmentally friendly box material.

2. The method for preparing a box material according to claim 1, characterized in that: In the extrusion granulation process in step 4, the head temperature is 190°C to 200°C, the barrel temperature is 170°C to 190°C, the screw aspect ratio is 36 to 40:1, and the screw speed is 230 to 250r / min.

3. The method for preparing a box material according to claim 1, characterized in that: The preparation steps of the modified shock absorber are: Step 1: Weighing polycarbonate and polyethylene terephthalate according to weight, adding them together with styrene-butadiene rubber and ethylene-propylene copolymer into a high-speed mixer to form a "sea-island" structure, thereby obtaining a modified polyester-polycarbonate copolymer; Step 2: adding metal foil and modified polyester-polycarbonate copolymer for lamination; Step 3: Finally, add polylactic acid and polyhydroxyalkanoate, heat treat at 170° C. to 190° C., stir for 10 to 15 minutes, and obtain a modified shock absorber.

4. The method for preparing a box material according to claim 3, characterized in that: The weight ratio of the polycarbonate to the polyethylene terephthalate is 1 to 3:1 to 3.

5. The method for preparing a box material according to claim 1, characterized in that: The degradable polymer in step 2 includes at least one of polypropylene, polyethylene glycol diacrylate, poly-ε-caprolactone, high-density polyethylene, low-density polyethylene, ethylene-vinyl acetate copolymer, polyester, polycarbonate and polyphenylene sulfide.

6. The method for preparing a box material according to claim 1, characterized in that: The preparation steps of the modified flame retardant in step 3 are: Step I: Glycidyl methacrylate is used as a main monomer and divinylbenzene is used as a crosslinking agent to synthesize glycidyl methacrylate-divinylbenzene copolymer microspheres by suspension polymerization, and polyethylene glycol is introduced on the surface of the microspheres to obtain modified microspheres; Step II: The modified microspheres are mixed in polydimethylsiloxane for coating, and then high-impact polystyrene is mixed with aluminum hydroxide, red phosphorus, phosphate flame retardant and expandable graphite to obtain a modified flame retardant.

7. The method for preparing a box material according to claim 1, characterized in that: The nano masterbatch is at least one of nano calcium carbonate, nano barium sulfate and nano talc; The surface treatment agent is at least one of a silane coupling agent, an aluminate coupling agent, a titanate coupling agent, polytetrafluoroethylene, an electrostatic spray treatment agent and a physical vapor deposition treatment agent.

8. The method for preparing a box material according to claim 1, characterized in that: The antioxidant is at least one of antioxidant 1010, antioxidant 168, antioxidant 626, antioxidant 1098, antioxidant 1076, thiodipropionate and antioxidant 264; The lubricant is at least one of polyethylene wax, stearic acid, paraffin wax and oxidized wax; The compatibilizer includes at least one of an acrylic compatibilizer, maleic anhydride grafted polyethylene, a low molecular weight compatibilizer and an isocyanate compatibilizer.

9. A box material, characterized in that: The box material is prepared by the preparation method of a box material according to any one of claims 1 to 9, wherein the box material comprises: 3 to 5 parts of nano masterbatch, 1 to 2 parts of tetraethyl silicate, 0.1 to 0.2 parts of surface treatment agent, 1 to 2 parts of modified shock absorber, 60 to 75 parts of epoxy resin, 10 to 15 parts of maleic anhydride grafted polyethylene, 0.5 to 1 parts of aluminum hydroxide, 0.5 to 1 parts of magnesium hydroxide, 0.2 to 0.6 parts of antioxidant, 1 to 3 parts of modified flame retardant, 2 to 5 parts of degradable polymer, 0.5 to 0.8 parts of compatibilizer and 0.2 to 0.5 parts of lubricant.

10. An application of a box material, characterized in that: The box material is prepared by the method for preparing a box material according to any one of claims 1 to 9, wherein the box material is used to prepare a box material, and the box material is injection molded by an injection molding machine or extrusion and blister molding by an extrusion blister molding machine.

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