Multi-layer composite membrane structure based on multiple carbon nanomaterials

Abstract

The utility model discloses a multi-layer composite film structure based on multiple carbon nanomaterials, which comprises an upper film layer, a middle film layer and a lower film layer, the lower film layer consists of a plurality of low-density carbon nano polyethylene cast film layers, and a braid layer is arranged in an interlayer between the adjacent low-density carbon nano polyethylene cast film layers; the upper film layer is composed of a plurality of high-density carbon nano polyethylene cast film layers, and a braid layer is arranged in an interlayer between every two adjacent high-density carbon nano polyethylene cast film layers; the middle film layer is composed of a single grid layer, and the grid layer is arranged in an interlayer between the low-density carbon nano polyethylene cast film layer and the high-density carbon nano polyethylene cast film layer which are adjacent to each other. The problems that an existing hollow heat preservation reinforced plastic film does not have a plastic net structure and a reinforced mulching film of a double-layer structure easily forms water drops on a grid layer are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite membrane structures, in particular to a multi-layer composite membrane structure based on a variety of carbon nanomaterials. Background Art

[0002] Plastic products have been used more and more widely in various fields of people's lives and the national economy, such as in the field of commodity packaging, in the field of construction engineering, in the field of agricultural production and breeding, etc. Plastic products are indispensable in almost all walks of life, and among all plastic products, plastic film is the most widely used category. With the improvement of social technology, living and industrial levels, people have put forward higher and higher requirements on the performance of plastic films, especially in food packaging, agricultural plastic greenhouses, civil engineering and water storage facilities, requiring plastic films to have excellent application properties such as: preservation, oxygen barrier, light transmission, water mist prevention, strict anti-seepage, light and temperature resistance, anti-aging, etc.; and, while meeting the above application properties, it is also required to have higher mechanical strength to reduce the cost of use and construction, reduce the waste of resources and pollution to the surrounding environment.

[0003] Chinese patent CN93247247.8 discloses a hollow heat-insulating reinforced plastic film, which is made of two or more layers of plastic film with one or more layers of plastic net compounded in the middle, forming a hollow space in the middle of the plastic film. The multi-layer plastic net and its hollow space have the function of heat preservation and reinforcement. This structure can improve the strength of the plastic film, reduce the thickness of the single-layer plastic film, save raw material consumption, and increase the temperature in the agricultural plastic film greenhouse by more than 5°C. However, the document does not disclose the structure of the plastic net and other contents.

[0004] Chinese patent CN92231990.1 discloses a recyclable and reusable ground film, which includes a film and a grid layer underneath the film. The film and the grid layer are integrated by adhesive or heat sealing to form a double-layer reinforced ground film. The advantage is that the transparency is the same as that of ordinary ground films and the strength is high; the disadvantage is that the structure is only a two-layer structure, and water droplets are easily formed on the grid layer.

[0005] To this end, we propose a multilayer composite membrane structure based on a variety of carbon nanomaterials to solve the above problems. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a multi-layer composite membrane structure based on a variety of carbon nanomaterials, which solves the problem that the existing hollow thermal insulation reinforced plastic film has no open plastic mesh structure and the problem that the double-layer structure reinforced ground film is prone to form water droplets in the grid layer.

[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions: a multi-layer composite membrane structure based on a variety of carbon nanomaterials, including an upper membrane layer, a middle membrane layer, and a lower membrane layer, wherein the lower membrane layer is composed of a plurality of low-density carbon nano-polyethylene cast membrane layers, and a woven layer is arranged in the interlayer between adjacent low-density carbon nano-polyethylene cast membrane layers;

[0008] The upper film layer is composed of a plurality of high-density carbon nano-polyethylene cast film layers, and a woven layer is arranged in the interlayer between adjacent high-density carbon nano-polyethylene cast film layers;

[0009] The middle film layer is composed of a single mesh layer, which is arranged in the interlayer between adjacent low-density carbon nano-polyethylene cast film layers and high-density carbon nano-polyethylene cast film layers and is adhered to the low-density carbon nano-polyethylene cast film layers and the high-density carbon nano-polyethylene cast film layers by an adhesive.

[0010] Preferably, the number of the low-density carbon nano-polyethylene cast film layers is set to at least two layers, and the woven layer and the low-density carbon nano-polyethylene cast film layer are bonded to each other by an adhesive.

[0011] Preferably, the number of the high-density carbon nano-polyethylene cast film layers is set to at least two layers, and the woven layer and the high-density carbon nano-polyethylene cast film layer are bonded to each other by an adhesive.

[0012] Preferably, a plurality of equally spaced high-density polymer resin stretched flat filaments are fixed on the braided layer, low-density polymer resin stretched flat filaments are woven on the braided layer in a criss-cross pattern, and the surface of the braided layer is evenly coated with nano metal particles.

[0013] Preferably, the grid layer is composed of a plurality of honeycomb grids connected together, and the plurality of honeycomb grids are distributed in an array.

[0014] Preferably, the upper film layer, the middle film layer and the lower film layer are all colorless and transparent layers for light transmission.

[0015] Beneficial Effects

[0016] The utility model provides a multi-layer composite membrane structure based on various carbon nanomaterials. Compared with the prior art, it has the following beneficial effects:

[0017] 1. The multilayer composite film structure based on multiple carbon nanomaterials includes an upper film layer, a middle film layer, and a lower film layer. The lower film layer is composed of multiple low-density carbon nano-polyethylene cast film layers, the upper film layer is composed of multiple high-density carbon nano-polyethylene cast film layers, and the middle film layer is composed of a single grid layer. A grid layer is arranged between adjacent low-density carbon nano-polyethylene cast film layers and high-density carbon nano-polyethylene cast film layers. The grid layer is composed of multiple honeycomb grids connected, and the multiple honeycomb grids are distributed in an array. A honeycomb mesh structure formed by multiple honeycomb grids forms a hollow space in the middle of the plastic composite film. The hollow space in the honeycomb grid has the function of heat preservation and strengthening. This structure can significantly improve the strength of the composite film and can increase the temperature in the agricultural plastic film greenhouse by more than 5°C.

[0018] 2. The multilayer composite membrane structure based on multiple carbon nanomaterials includes an upper membrane layer, a middle membrane layer, and a lower membrane layer. The lower membrane layer is composed of multiple low-density carbon nano-polyethylene cast membrane layers, and the upper membrane layer is composed of multiple high-density carbon nano-polyethylene cast membrane layers. A woven layer is arranged in the interlayer between adjacent low-density carbon nano-polyethylene cast membrane layers and high-density carbon nano-polyethylene cast membrane layers. By setting a multilayer structure, it is difficult for water droplets to form on the mesh layer. The braided layer is formed inside, and a plurality of equally spaced high-density polymer resin stretched flat wires are fixed on the braided layer, and low-density polymer resin stretched flat wires are woven on the braided layer in a criss-cross pattern. The surface of the braided layer is evenly coated with nano-metal particles. The high-density polymer resin stretched flat wires provide the braided layer with well-balanced supporting performance. At the same time, the braided low-density polymer resin stretched flat wires and the evenly coated nano-metal particles provide the braided layer with maximum mechanical strength, are not easy to tear, are not easy to wrinkle due to heat, and have good and wide usage functions and greatly enhanced mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0021] Figure 3 This is a schematic diagram of the braided layer structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the grid layer structure of the utility model.

[0023] In the figure: 1. low-density carbon nano-polyethylene cast film layer; 2. high-density carbon nano-polyethylene cast film layer; 3. woven layer; 31. high-density polymer resin stretched flat wire; 32. low-density polymer resin stretched flat wire; 33. nano-metal particles; 4. mesh layer; 41. honeycomb mesh. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , the utility model provides two technical solutions:

[0026] Embodiment 1:

[0027] A multilayer composite membrane structure based on a variety of carbon nanomaterials, including an upper membrane layer, a middle membrane layer, and a lower membrane layer, wherein the lower membrane layer is composed of a plurality of low-density carbon nano-polyethylene cast membrane layers 1, and a woven layer 3 is arranged in the interlayer between adjacent low-density carbon nano-polyethylene cast membrane layers 1;

[0028] The upper film layer is composed of a plurality of high-density carbon nano-polyethylene cast film layers 2, and a woven layer 3 is arranged in the interlayer between adjacent high-density carbon nano-polyethylene cast film layers 2;

[0029] The middle film layer is composed of a single mesh layer 4, which is arranged in the interlayer between the adjacent low-density carbon nano-polyethylene cast film layer 1 and the high-density carbon nano-polyethylene cast film layer 2 and is bonded to the low-density carbon nano-polyethylene cast film layer 1 and the high-density carbon nano-polyethylene cast film layer 2 by an adhesive.

[0030] Embodiment 2:

[0031] The main difference from the first embodiment is:

[0032] Based on a multilayer composite membrane structure of multiple carbon nanomaterials, the number of low-density carbon nano-polyethylene cast film layers 1 is set to at least two layers, the woven layer 3 and the low-density carbon nano-polyethylene cast film layer 1 are bonded by an adhesive, the number of high-density carbon nano-polyethylene cast film layers 2 is set to at least two layers, the woven layer 3 and the high-density carbon nano-polyethylene cast film layer 2 are bonded by an adhesive, the lower film layer is composed of multiple low-density carbon nano-polyethylene cast film layers 1, and the upper film layer is composed of multiple high-density carbon nano-polyethylene cast film layers 2. By setting a multilayer structure, water droplets are not easily formed in the grid layer 4; a plurality of equally spaced high-density polymer resin stretched flat wires 31 are fixed on the woven layer 3, low-density polymer resin stretched flat wires 32 are woven on the woven layer 3, and the surface of the woven layer 3 is evenly coated with nano-gold The metal particles 33 are made of metal particles 33, and the high-density polymer resin stretched flat wire 31 has a well-balanced supporting performance. At the same time, the woven low-density polymer resin stretched flat wire 32 and the uniformly coated nano metal particles 33 make the woven layer 3 have the maximum mechanical strength, are not easy to tear, are not easy to wrinkle due to heat, have good and wide use functions and greatly enhanced mechanical properties; the grid layer 4 is composed of a plurality of honeycomb grids 41 connected, and the plurality of honeycomb grids 41 are distributed in an array. The honeycomb mesh structure formed by the plurality of honeycomb grids 41 forms a hollow space in the middle of the plastic composite film. The hollow space in the honeycomb grid 41 has the function of heat preservation and strengthening. This structure can significantly improve the strength of the composite film and can increase the temperature in the agricultural plastic film greenhouse by more than 5°C; the upper film layer, the middle film layer, and the lower film layer are all colorless and transparent layers for light transmission.

[0033] When the multilayer composite film structure based on multiple carbon nanomaterials is used, it includes an upper film layer, a middle film layer, and a lower film layer. The lower film layer is composed of multiple low-density carbon nanopolyethylene cast film layers 1, the upper film layer is composed of multiple high-density carbon nanopolyethylene cast film layers 2, the middle film layer is composed of a single grid layer 4, and a grid layer 4 is arranged between adjacent low-density carbon nanopolyethylene cast film layers 1 and high-density carbon nanopolyethylene cast film layers 2. The grid layer 4 is composed of multiple honeycomb grids 41 connected together, and the multiple honeycomb grids 41 are distributed in an array. A honeycomb mesh structure formed by the multiple honeycomb grids 41 forms a hollow space in the middle of the plastic composite film. The hollow space in the honeycomb grids 41 has the function of heat preservation and strengthening. This structure can significantly improve the strength of the composite film and can increase the temperature in the agricultural plastic film greenhouse by more than 5°C. In addition, the utility model includes an upper film layer, a middle film layer, and a lower film layer. The lower film layer is composed of multiple low-density carbon nanopolyethylene cast film layers 1, and the upper film layer is composed of multiple high-density carbon nanopolyethylene cast film layers 2. The mesh layer 4 is composed of a cast film layer 2, and a woven layer 3 is respectively arranged in the interlayer between the adjacent low-density carbon nano-polyethylene cast film layers 1 and the high-density carbon nano-polyethylene cast film layers 2. The lower film layer is composed of multiple low-density carbon nano-polyethylene cast film layers 1, and the upper film layer is composed of multiple high-density carbon nano-polyethylene cast film layers 2. By setting a multi-layer structure, it is difficult for water droplets to form in the grid layer 4, and at the same time, multiple equally spaced high-density polymer resin stretched flat wires 31 are fixed on the woven layer 3, and low-density polymer resin stretched flat wires 32 are woven on the woven layer 3 in a criss-cross pattern. The surface of the woven layer 3 is evenly coated with nano-metal particles 33. The high-density polymer resin stretched flat wires 31 make it have well-balanced supporting performance. At the same time, the woven low-density polymer resin stretched flat wires 32 and the evenly coated nano-metal particles 33 make the woven layer 3 have maximum mechanical strength, are not easy to tear, are not easy to wrinkle due to heat, and have good and wide usage functions and greatly enhanced mechanical properties.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] 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.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer composite membrane structure based on various carbon nanomaterials, including an upper membrane layer, a middle membrane layer, and a lower membrane layer, characterized in that: The lower film layer is composed of a plurality of low-density carbon nano-polyethylene cast film layers (1), and a woven layer (3) is provided in the interlayer between adjacent low-density carbon nano-polyethylene cast film layers (1); The upper film layer is composed of a plurality of high-density carbon nano-polyethylene cast film layers (2), and a woven layer (3) is provided in the interlayer between adjacent high-density carbon nano-polyethylene cast film layers (2); The middle film layer is composed of a single mesh layer (4), and the mesh layer (4) is arranged in an interlayer between adjacent low-density carbon nano-polyethylene cast film layers (1) and high-density carbon nano-polyethylene cast film layers (2), and is bonded to the low-density carbon nano-polyethylene cast film layers (1) and the high-density carbon nano-polyethylene cast film layers (2) by an adhesive.

2. The multi-layer composite film structure based on multiple carbon nanomaterials according to claim 1, characterized in that: The number of the low-density carbon nano-polyethylene cast film layers (1) is set to at least two layers, and the woven layer (3) and the low-density carbon nano-polyethylene cast film layer (1) are bonded together by an adhesive.

3. The multi-layer composite film structure based on multiple carbon nanomaterials according to claim 1, characterized in that: The number of the high-density carbon nano-polyethylene cast film layers (2) is set to at least two layers, and the woven layer (3) and the high-density carbon nano-polyethylene cast film layer (2) are bonded together by an adhesive.

4. The multi-layer composite film structure based on multiple carbon nanomaterials according to claim 1, characterized in that: A plurality of equally spaced high-density polymer resin stretched flat filaments (31) are fixed on the braided layer (3), low-density polymer resin stretched flat filaments (32) are woven on the braided layer (3) and distributed in a crisscross pattern, and nano-metal particles (33) are evenly coated on the surface of the braided layer (3).

5. The multi-layer composite film structure based on multiple carbon nanomaterials according to claim 1, characterized in that: The grid layer (4) is composed of a plurality of honeycomb grids (41) connected together, and the plurality of honeycomb grids (41) are distributed in an array.

6. The multi-layer composite membrane structure based on multiple carbon nanomaterials according to claim 1, characterized in that: The upper film layer, the middle film layer and the lower film layer are all colorless and transparent layers for light transmission.

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