Degradable environment-friendly membrane material and preparation method thereof

Abstract

The invention provides a degradable environment-friendly membrane material and a preparation method thereof. The degradable environment-friendly membrane material is prepared from a first PBS (Phosphate Buffer Solution) layer, a gel layer and a second PBS layer, wherein the gel layer is prepared from the following components in parts by weight: 1 to 10 parts of carrageenan, 1 to 5 parts of cellulose, 0.1 to 1 part of erucyl amide, 0.1 to 1 part of surfactant and 0.1 to 1 part of carbon nano tube. According to the degradable environment-friendly membrane material and the preparation method thereof provided by the invention, the membrane material is green, environment-friendly and degradable, reduces pollution to the environment, is high in biological decomposition rate, high in strength and low in cost, has the use characteristics of traditional plastic membranes, and can achieve the purpose of complete biodegradation without specific conditions.

Description

Technical Field

[0001] The present invention relates to the field of environmentally friendly film materials, and in particular to a degradable environmentally friendly film material and a preparation method thereof. Background Art

[0002] With the development of society, people's requirements for product performance have extended from simply pursuing performance to all aspects of the product. Product packaging is a key step in the production and delivery process. Currently, many products are packaged in plastic film, which is usually made of polyethylene, polypropylene, polyvinyl chloride and other materials.

[0003] As people's living standards improve, in pursuit of convenience, the extensive use of non-biodegradable PET and PP films has further led to serious health and environmental problems. This is because these films themselves release harmful gases, which accumulate in sealed bags for a long time. The concentration increases with the sealing time, causing the food in the bags to be contaminated to varying degrees. The large-scale use of PET and PP films is difficult to degrade naturally in nature, causing serious pollution to the soil and water sources. Direct incineration will cause air pollution and destroy the ecological balance of nature.

[0004] Traditional plastic films, when discarded, not only pollute the environment but also cause waste of resources. It can be seen that their proper disposal after use has become one of the problems that society urgently needs to solve.

[0005] Therefore, it is necessary to provide a biodegradable environmentally friendly film material and a preparation method thereof to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a degradable environmentally friendly film material and a preparation method thereof, which solve the problems in the background technology.

[0007] In order to solve the above technical problems, the present invention provides a degradable and environmentally friendly film material, which includes a first PBS layer, a gel layer, and a second PBS layer;

[0008] The gel layer comprises the following components by weight: 1-10 parts of carrageenan, 1-5 parts of cellulose, 0.1-1 parts of erucamide, 0.1-1 parts of surfactant, and 0.1-1 parts of carbon nanotubes.

[0009] Preferably, the gel layer comprises the following components by weight: 10 parts of carrageenan, 5 parts of cellulose, 1 part of erucamide, 1 part of surfactant, and 1 part of carbon nanotubes.

[0010] A method for preparing a degradable environmentally friendly film material comprises the following steps:

[0011] S1. Pretreatment: The first PBS film layer and the second PBS film layer are subjected to dust removal and wrinkle removal under processing equipment to make the battery separator flat and wrinkle-free, and the ion blower is used to remove static electricity;

[0012] S2, coating: coating the gel layer on the first PBS film layer, and then covering the first PBS film layer with a second PBS film layer;

[0013] S3, pressing: applying pressure to the second PBS by processing equipment, during which it is necessary to ensure that the two are relatively stable and do not deviate, so that the first PBS film layer and the second PBS film layer are bonded together;

[0014] S4. Heat baking: The pressed PBS film layer is heat baked. The heat baking process goes through 7 temperature sections in sequence. After the gel layer is solidified, the degradable and environmentally friendly film material is obtained.

[0015] Preferably, in S4, hot baking and cooling are performed alternately, cooling is performed after hot baking, and hot baking is performed again after cooling.

[0016] Preferably, the seven temperature sections of the thermal baking in S4 are 70°C, 80°C, 90°C, 100°C, 110°C, 90°C, and 80°C.

[0017] Preferably, the processing equipment in S1 includes a workbench, two conveying components are provided on the workbench, the first PBS film layer and the second PBS film layer are conveyed by the two conveying components, a glue coating roller is provided on the workbench, a first cylinder is fixedly connected to the workbench, a pressing roller is installed at the bottom of the first cylinder, a pressing table is fixedly connected to the workbench, a suction pump is fixedly connected to the workbench, the inlet of the suction pump is connected to the first conduit, a cavity groove is fixedly connected to the workbench, dust suction heads are installed at the top and bottom of the cavity groove, the right side of the cavity groove is connected to the second conduit, a dust collecting barrel is installed on the back of the workbench, the first conduit and the second conduit are both connected to the dust collecting barrel, the outlet of the second conduit is located at the top of the dust collecting barrel, an opening is opened on one side of the dust collecting barrel, a cover plate is movably connected to the dust collecting barrel, and the cover plate is detachably connected to the dust collecting barrel by bolts.

[0018] Preferably, a linear motor is fixedly connected to the left side of the cavity slot, a moving block is installed on the linear motor, the top and bottom of the linear motor are fixedly connected to a sleeve plate, the interior of the sleeve plate is slidably connected to a sliding plate, a cleaning brush is fixedly connected to the sliding plate, and two movable rods are movably connected to the moving block, and one end of the two movable rods is movably connected to the two sliding plates respectively.

[0019] Preferably, the bottom of the dust collecting cylinder is an inclined surface, and a sealing gasket is fixedly connected to the cover plate.

[0020] Preferably, a guide roller is installed on the workbench, and an ion blower is installed on the workbench.

[0021] Preferably, a tensioning assembly is installed on the workbench, and the tensioning assembly includes a fixed frame, two moving blocks are slidably connected to the fixed frame, the front sides of the two moving blocks are installed with tensioning rollers, the back sides of the two moving blocks are fixedly connected with a first oblique block, a fixed block is installed inside the fixed frame, a compression spring is provided between the moving block and the fixed block, a second cylinder is installed on the back side of the fixed frame, a connecting plate is fixedly connected to the second cylinder, and the top and bottom of the connecting plate are fixedly connected with a second oblique block.

[0022] Compared with the related art, the degradable environmentally friendly film material and its preparation method provided by the present invention have the following advantages:

[0023] Beneficial effects:

[0024] The present invention provides a degradable and environmentally friendly film material and a preparation method thereof. The film material is green, environmentally friendly and degradable, reduces pollution to the environment, has a high biodegradability rate, high strength, and low cost, has the usage characteristics of traditional plastic films, and does not require specific conditions to achieve the purpose of complete biodegradation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a second embodiment of the degradable and environmentally friendly film material and its preparation method provided by the present invention;

[0026] Figure 2 for Figure 1 The schematic structural diagram of the cavity slot shown;

[0027] Figure 3 for Figure 1 A schematic diagram of the back of the workbench is shown;

[0028] Figure 4 for Figure 3 An enlarged schematic diagram of part A is shown;

[0029] Figure 5 for Figure 1 A side view of the tensioning assembly is shown.

[0030] Numbers in the figure: 1. workbench, 2. conveying assembly, 3. glue coating roller, 4. first cylinder, 5. pressing roller, 6. pressing table, 7. suction pump, 8. first duct, 9. cavity slot, 10. dust collection head, 11. second duct, 12. dust collecting barrel, 13. opening, 14. cover plate, 15. bolt, 16. linear motor, 17. moving block, 18. sleeve plate, 19. sliding plate, 20. cleaning brush, 21. movable rod, 22. sealing gasket, 23. guide roller, 24. ion fan, 25. tensioning assembly, 251. fixed frame, 252. moving block, 253. tensioning roller, 254. first oblique block, 255. fixed block, 256. compression spring, 257. second cylinder, 258. connecting plate, 259. second oblique block. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] First embodiment

[0033] The degradable and environmentally friendly membrane material comprises a first PBS layer, a gel layer, and a second PBS layer;

[0034] The gel layer comprises the following components by weight: 1-10 parts of carrageenan, 1-5 parts of cellulose, 0.1-1 parts of erucamide, 0.1-1 parts of surfactant, and 0.1-1 parts of carbon nanotubes.

[0035] The gel layer comprises the following components by weight: 10 parts of carrageenan, 5 parts of cellulose, 1 part of erucamide, 1 part of surfactant, and 1 part of carbon nanotubes.

[0036] A method for preparing a degradable environmentally friendly film material comprises the following steps:

[0037] S1. Pretreatment: The first PBS film layer and the second PBS film layer are subjected to dust removal and wrinkle removal under processing equipment to make the battery separator flat and wrinkle-free, and the ion blower is used to remove static electricity;

[0038] S2, coating: coating the gel layer on the first PBS film layer, and then covering the first PBS film layer with a second PBS film layer;

[0039] S3, pressing: applying pressure to the second PBS by processing equipment, during which it is necessary to ensure that the two are relatively stable and do not deviate, so that the first PBS film layer and the second PBS film layer are bonded together;

[0040] S4. Heat baking: The pressed PBS film layer is heat baked. The heat baking process goes through 7 temperature sections in sequence. After the gel layer is solidified, the degradable and environmentally friendly film material is obtained.

[0041] In the step S4, hot baking and cooling are performed alternately, cooling is performed after hot baking, and hot baking is performed again after cooling.

[0042] The seven temperature sections of the thermal baking in S4 are 70°C, 80°C, 90°C, 100°C, 110°C, 90°C, and 80°C.

[0043] The working principle of the degradable environmentally friendly film material and its preparation method provided by the present invention is as follows:

[0044] The first PBS film layer and the second PBS film layer are subjected to dust removal and wrinkle removal under processing equipment to make the battery isolation membrane flat and wrinkle-free, and an ion fan is used to remove static electricity; the gel layer is coated on the first PBS film layer, and then the second PBS film layer is covered on the first PBS film layer; pressure is applied to the second PBS film layer by the processing equipment, and during the process, it is necessary to ensure that the two are relatively stable and do not deviate, so that the first PBS film layer and the second PBS film layer are bonded together; finally, the pressed PBS film layers are heat-dried, and the heat-dried process sequentially passes through seven temperature sections. After the gel layer is solidified, the degradable and environmentally friendly film material is obtained.

[0045] Compared with the related art, the degradable environmentally friendly film material and its preparation method provided by the present invention have the following advantages:

[0046] Beneficial effects:

[0047] This film material is green, environmentally friendly and degradable, reduces pollution to the environment, has a high biodegradability rate, high strength, and low cost. It has the usage characteristics of traditional plastic films and does not require specific conditions to achieve complete biodegradation.

[0048] Second embodiment

[0049] Please refer to Figure 1-5 Based on the degradable and environmentally friendly film material and its preparation method provided in the first embodiment of this application, the second embodiment of this application provides another degradable and environmentally friendly film material and its preparation method. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0050] Specifically, the difference between the degradable environmentally friendly film material and the preparation method thereof provided in the second embodiment of the present application is that the processing equipment in S1 includes a workbench 1, two conveying components 2 are provided on the workbench 1, the first PBS film layer and the second PBS film layer are conveyed by the two conveying components 2, a glue coating roller 3 is provided on the workbench 1, a first cylinder 4 is fixedly connected to the workbench 1, a pressing roller 5 is installed at the bottom of the first cylinder 4, a pressing table 6 is fixedly connected to the workbench 1, a suction pump 7 is fixedly connected to the workbench 1, and the inlet of the suction pump 7 is connected to the suction pump 7. A first conduit 8 is passed through, a cavity groove 9 is fixedly connected to the workbench 1, a dust collection head 10 is installed on the top and bottom of the cavity groove 9, a second conduit 11 is connected to the right side of the cavity groove 9, a dust collecting barrel 12 is installed on the back of the workbench 1, the first conduit 8 and the second conduit 11 are both connected to the dust collecting barrel 12, the outlet of the second conduit 11 is located at the top of the dust collecting barrel 12, an opening 13 is provided on one side of the dust collecting barrel 12, a cover plate 14 is movably connected to the dust collecting barrel 12, and the cover plate 14 is detachably connected to the dust collecting barrel 12 by bolts 15.

[0051] One end of the second conduit 11 is connected to the top of the dust collecting barrel 12 so that the impurities accumulated in the second conduit 11 can be directly discharged into the interior of the dust collecting barrel 12. When the cover 14 is opened, the dust can be discharged automatically, which is more convenient to use.

[0052] A linear motor 16 is fixedly connected to the left side of the cavity slot 9, and a moving block 17 is installed on the linear motor 16. The top and bottom of the linear motor 16 are fixedly connected to a sleeve plate 18, and the interior of the sleeve plate 18 is slidably connected to a sliding plate 19, and a cleaning brush 20 is fixedly connected to the sliding plate 19. Two movable rods 21 are movably connected to the moving block 17, and one end of the two movable rods 21 is movably connected to the two sliding plates 19 respectively.

[0053] The linear motor 16 can drive the cleaning brush 20 to extend, so that the cleaning brush 20 can be controlled to clean the two films to avoid impurities on the films. Cleaning first and then removing dust can improve the impurity removal effect of the films.

[0054] The bottom of the dust collecting barrel 12 is an inclined surface, and a sealing gasket 22 is fixedly connected to the cover plate 14. The provision of the sealing gasket 22 can ensure the sealing performance of the cover plate 14 after closing, thereby improving the sealing effect.

[0055] The workbench 1 is provided with a guide roller 23, which can guide the second PBS film layer and facilitate lamination with the first PBS film layer. The workbench 1 is provided with an ion blower 24, which can remove static electricity on the first PBS film layer and the second PBS film layer.

[0056] A tensioning assembly 25 is installed on the workbench 1, and the tensioning assembly 25 includes a fixed frame 251. Two moving blocks 252 are slidably connected to the fixed frame 251. The front sides of the two moving blocks 252 are installed with tensioning rollers 253. The back sides of the two moving blocks 252 are fixedly connected with a first oblique block 254. A fixed block 255 is installed inside the fixed frame 251. A compression spring 256 is provided between the moving block 252 and the fixed block 255. A second cylinder 257 is installed on the back side of the fixed frame 251. A connecting plate 258 is fixedly connected to the second cylinder 257. The top and bottom of the connecting plate 258 are fixedly connected with a second oblique block 259.

[0057] The extension of the second cylinder 257 can drive the connecting plate 258 to move, so that the two second inclined blocks 259 move toward the two first inclined blocks 254. Through the extrusion between the inclined surfaces, the two first inclined blocks 254 move relative to each other to squeeze the two compression springs 256. The relative movement of the two first inclined blocks 254 will cause the two moving blocks 252 to move relative to each other, so that the two tensioning rollers 253 move relative to each other. When the second cylinder 257 contracts, it drives the two second inclined blocks 259 to move away from the first inclined block 254 and no longer squeezes the first inclined block 254. The two compression springs 256 will rebound, causing the two first inclined blocks 254 to move apart, and the two tensioning rollers 253 to move apart. Adjustment can effectively tension the film, adjust the tension, remove film wrinkles, and improve processing quality.

[0058] Compared with the related art, the degradable environmentally friendly film material and its preparation method provided by the present invention have the following advantages:

[0059] Beneficial effects:

[0060] The first PBS film layer and the second PBS film layer are transported to the right by the two conveying assemblies 2. At this time, the linear motor 16 is started to move the moving block 17 to the left, thereby driving the two sliding plates 19 to move apart through the two movable rods 21, so that the two cleaning brushes 20 move apart and contact the first PBS film layer and the second PBS film layer to clean up the impurities on the film. The suction pump 7 is started to make the two dust collector heads 10 absorb the dust on the film, thereby removing impurities from the film. The dust enters the interior of the dust collecting barrel 12 through the cavity groove 9 and the second conduit 11. Subsequently, the glue roller 3 applies glue on the first PBS film layer. The pressing roller 5 moves downward by extending the first cylinder 4 to press the second PBS film layer downward together with the first PBS film layer. The operation is simple, convenient and fast.

[0061] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A degradable environmentally friendly film material, characterized in that: The membrane material includes a first PBS layer, a gel layer, and a second PBS layer; The gel layer comprises the following components by weight: 1-10 parts of carrageenan, 1-5 parts of cellulose, 0.1-1 parts of erucamide, 0.1-1 parts of surfactant, and 0.1-1 parts of carbon nanotubes.

2. The degradable environmentally friendly film material according to claim 1, characterized in that: The gel layer comprises the following components by weight: 10 parts of carrageenan, 5 parts of cellulose, 1 part of erucamide, 1 part of surfactant, and 1 part of carbon nanotubes.

3. A method for preparing a degradable environmentally friendly film material, characterized in that: The following steps are involved: S1. Pretreatment: The first PBS film layer and the second PBS film layer are subjected to dust removal and wrinkle removal under processing equipment to make the battery separator flat and wrinkle-free, and the ion blower is used to remove static electricity; S2, coating: coating the gel layer on the first PBS film layer, and then covering the first PBS film layer with a second PBS film layer; S3, pressing: applying pressure to the second PBS by processing equipment, during which it is necessary to ensure that the two are relatively stable and do not deviate, so that the first PBS film layer and the second PBS film layer are bonded together; S4. Heat baking: The pressed PBS film layer is heat baked. The heat baking process goes through 7 temperature sections in sequence. After the gel layer is solidified, the degradable and environmentally friendly film material is obtained.

4. The method for preparing a degradable environmentally friendly film material according to claim 3, characterized in that: In the step S4, hot baking and cooling are performed alternately, cooling is performed after hot baking, and hot baking is performed again after cooling.

5. The method for preparing a degradable environmentally friendly film material according to claim 3, characterized in that: The seven temperature sections of the thermal baking in S4 are 70°C, 80°C, 90°C, 100°C, 110°C, 90°C, and 80°C.

6. The method for preparing a degradable and environmentally friendly film material according to claim 3, wherein: The processing equipment in S1 includes a workbench, two conveying components are provided on the workbench, and the first PBS film layer and the second PBS film layer are conveyed by the two conveying components. A glue coating roller is provided on the workbench, and a first cylinder is fixedly connected to the workbench, and a pressing roller is installed at the bottom of the first cylinder. A pressing table is fixedly connected to the workbench, and a suction pump is fixedly connected to the workbench, and the inlet of the suction pump is connected to a first conduit. A cavity groove is fixedly connected to the workbench, and dust suction heads are installed at the top and bottom of the cavity groove. The right side of the cavity groove is connected to the second conduit, and a dust collecting barrel is installed on the back of the workbench, and the first conduit and the second conduit are both connected to the dust collecting barrel, and the outlet of the second conduit is located at the top of the dust collecting barrel, and an opening is opened on one side of the dust collecting barrel. A cover plate is movably connected to the dust collecting barrel, and the cover plate is detachably connected to the dust collecting barrel by bolts.

7. The method for preparing a degradable environmentally friendly film material according to claim 6, characterized in that: A linear motor is fixedly connected to the left side of the cavity slot, a moving block is installed on the linear motor, the top and bottom of the linear motor are fixedly connected to a sleeve plate, the interior of the sleeve plate is slidably connected to a sliding plate, a cleaning brush is fixedly connected to the sliding plate, and two movable rods are movably connected to the moving block, and one end of the two movable rods is movably connected to the two sliding plates respectively.

8. The method for preparing a degradable and environmentally friendly film material according to claim 6, characterized in that: The bottom of the dust collecting cylinder is an inclined surface, and a sealing gasket is fixedly connected to the cover plate.

9. The method for preparing a degradable and environmentally friendly film material according to claim 6, characterized in that: The workbench is provided with a guide roller and an ion blower.

10. The method for preparing a degradable and environmentally friendly film material according to claim 6, characterized in that: A tensioning assembly is installed on the workbench, and the tensioning assembly includes a fixed frame, two moving blocks are slidably connected to the fixed frame, tensioning rollers are installed on the front sides of the two moving blocks, and the back sides of the two moving blocks are fixedly connected to the first oblique block, a fixed block is installed inside the fixed frame, a compression spring is provided between the moving block and the fixed block, a second cylinder is installed on the back side of the fixed frame, a connecting plate is fixedly connected to the second cylinder, and the top and bottom of the connecting plate are fixedly connected to the second oblique block.

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