Double-layer breathable fiber membrane

Abstract

The utility model provides a double-layer breathable fiber membrane, which relates to the field of detection reagent consumables and comprises a breathable membrane mechanism which comprises a nanofiber membrane, a first ultra-high molecular weight polyethylene fiber layer, a second ultra-high molecular weight polyethylene fiber layer, a first aramid fiber layer and a first polyurethane elastic fiber layer, a chemical stable membrane mechanism is arranged at the top of the breathable membrane mechanism and comprises a glass fiber membrane, a second ultra-high molecular weight polyethylene fiber layer and a second aramid fiber layer. According to the utility model, a liquid sample is quickly adsorbed and filtered through the higher porosity and specific surface area of the glass fiber membrane, and moisture and air permeability are realized through the fine fiber diameter and higher porosity and specific surface area of the nanofiber membrane, so that the air permeability effect of the double-layer fiber membrane is improved, and meanwhile, the filtering effect is improved; the tensile strength of the double-layer fiber membrane is improved, and the phenomenon that the double-layer fiber membrane is damaged due to external influence is reduced.

Description

Technical Field

[0001] This utility model relates to the field of testing reagents and consumables, and in particular to a double-layer breathable fiber membrane. Background Technology

[0002] The role of the fiber membrane in the test reagent consumables is to process and fix the sample. The fiber membrane has a porous structure, which can adsorb and fix the target substances in the sample. Fiber membranes with different pore sizes can filter and separate substances according to their size, removing impurities, cell debris and other substances from the sample.

[0003] In the existing technology, double-layer fiber membranes are generally made of two fiber membranes of different or the same material through a specific process. Traditional double-layer fiber membranes have poor air permeability, which reduces the filtration effect. In addition, the tensile strength of current double-layer fiber membranes is not good, and they are easily damaged by external influences. Utility Model Content

[0004] The purpose of this invention is to provide a double-layer breathable fiber membrane to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a breathable membrane mechanism, wherein the breathable membrane mechanism comprises a nanofiber membrane, a first ultra-high molecular weight polyethylene fiber layer, a first ultra-high molecular weight polyethylene fiber layer, a first aramid fiber layer and a first polyurethane elastic fiber layer, and a chemically stabilized membrane mechanism is provided on the top of the breathable membrane mechanism, wherein the chemically stabilized membrane mechanism comprises a glass fiber membrane, a second ultra-high molecular weight polyethylene fiber layer and a second aramid fiber layer.

[0006] In a preferred embodiment, the bottom of the nanofiber membrane is fixedly connected to the top of the first ultra-high molecular weight polyethylene fiber layer by an adhesive, and the top of the nanofiber membrane is fixedly connected to the bottom of the first aramid fiber layer by an adhesive.

[0007] In a preferred embodiment, the top of the first aramid fiber layer is fixedly connected to the bottom of the first polyurethane elastic fiber layer by an adhesive, and the top of the first polyurethane elastic fiber layer is fixedly connected to the bottom of the second polyurethane elastic fiber layer by an adhesive.

[0008] In a preferred embodiment, the top of the second polyurethane elastic fiber layer is fixedly connected to the bottom of the second aramid fiber layer by an adhesive, and the top of the second aramid fiber layer is fixedly connected to the bottom of the glass fiber membrane by an adhesive.

[0009] In a preferred embodiment, the top of the glass fiber membrane is fixedly connected to the bottom of the second ultra-high molecular weight polyethylene fiber layer by an adhesive, and the glass fiber membrane is located above the nanofiber membrane.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this invention, liquid samples are rapidly adsorbed and filtered through the high porosity and specific surface area of ​​the glass fiber membrane. The small fiber diameter and high porosity and specific surface area of ​​the nanofiber membrane allow for moisture and air permeability, which increases the air permeability of the double-layer fiber membrane and also enhances the filtration effect.

[0012] 2. In this utility model, when subjected to external pulling, the first aramid fiber layer, the first polyurethane elastic fiber layer, the second aramid fiber layer, and the second polyurethane elastic fiber layer resist the tensile force, thereby increasing the tensile strength of the double-layer fiber membrane and reducing the phenomenon of damage to the double-layer fiber membrane caused by external influences. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of a double-layer breathable fiber membrane provided by this utility model;

[0014] Figure 2 A partial cross-sectional view of the breathable membrane mechanism of a double-layer breathable fiber membrane provided for this utility model;

[0015] Figure 3 A partial cross-sectional view of the chemically stabilized membrane structure of a double-layer breathable fiber membrane provided by this utility model.

[0016] Legend:

[0017] 1. Breathable membrane structure; 101. Nanofiber membrane; 102. First ultra-high molecular weight polyethylene fiber layer; 103. First aramid fiber layer; 104. First polyurethane elastic fiber layer; 2. Chemically stabilized membrane structure; 201. Glass fiber membrane; 202. Second ultra-high molecular weight polyethylene fiber layer; 203. Second aramid fiber layer; 204. Second polyurethane elastic fiber layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3This utility model provides a technical solution comprising: a breathable membrane mechanism 1, which includes a nanofiber membrane 101, a first ultra-high molecular weight polyethylene fiber layer 102, a first ultra-high molecular weight polyethylene fiber layer 103, and a first polyurethane elastic fiber layer 104; a chemically stabilized membrane mechanism 2 is provided on the top of the breathable membrane mechanism 1, which includes a glass fiber membrane 201, a second ultra-high molecular weight polyethylene fiber layer 202, and a second aramid fiber layer 203.

[0020] In one embodiment, the bottom of the nanofiber membrane 101 is fixedly connected to the top of the first ultra-high molecular weight polyethylene fiber layer 102 by an adhesive, and the top of the nanofiber membrane 101 is fixedly connected to the bottom of the first aramid fiber layer 103 by an adhesive.

[0021] Specifically: the nanofiber membrane 101 achieves moisture and air permeability through its small fiber diameter, high porosity, and specific surface area.

[0022] In one embodiment, the top of the first aramid fiber layer 103 is fixedly connected to the bottom of the first polyurethane elastic fiber layer 104 by an adhesive, and the top of the first polyurethane elastic fiber layer 104 is fixedly connected to the bottom of the second polyurethane elastic fiber layer 204 by an adhesive.

[0023] Specifically, the high strength of the first aramid fiber layer 103 and the first polyurethane elastic fiber layer 104 resists tensile force, thereby increasing the tensile strength of the double-layer fiber membrane.

[0024] In one embodiment, the top of the second polyurethane elastic fiber layer 204 is fixedly connected to the bottom of the second aramid fiber layer 203 by an adhesive, and the top of the second aramid fiber layer 203 is fixedly connected to the bottom of the glass fiber membrane 201 by an adhesive.

[0025] Specifically, the high strength of the second aramid fiber layer 203 and the second polyurethane elastic fiber layer 204 resists tensile forces.

[0026] In one embodiment, the top of the glass fiber membrane 201 is fixedly connected to the bottom of the second ultra-high molecular weight polyethylene fiber layer 202 by an adhesive, and the glass fiber membrane 201 is located above the nanofiber membrane 101.

[0027] Specifically: the glass fiber membrane 201 has good chemical stability and mechanical strength, which increases the chemical stability of the double-layer fiber membrane; the second ultra-high molecular weight polyethylene fiber layer 202 has extremely high strength and modulus and excellent wear resistance, which increases the wear resistance of the double-layer fiber membrane.

[0028] Working principle: Liquid samples are rapidly adsorbed and filtered through the high porosity and specific surface area of ​​the glass fiber membrane 201. Moisture and air permeability are achieved through the fine fiber diameter and high porosity and specific surface area of ​​the nanofiber membrane 101. When subjected to external tension, the first aramid fiber layer 103, the first polyurethane elastic fiber layer 104, the second aramid fiber layer 203, and the second polyurethane elastic fiber layer 204 resist the tensile force.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A bilayer breathable fibrous membrane, characterized by, include: A breathable membrane structure (1) is provided on the top of the breathable membrane structure (1), which includes a nanofiber membrane (101), a first ultra-high molecular weight polyethylene fiber layer (102), a first aramid fiber layer (103) and a first polyurethane elastic fiber layer (104). A chemically stabilized membrane structure (2) is provided on the top of the breathable membrane structure (1), which includes a glass fiber membrane (201), a second ultra-high molecular weight polyethylene fiber layer (202) and a second aramid fiber layer (203).

2. The dual layer breathable fiber membrane according to claim 1, characterized in that: The bottom of the nanofiber membrane (101) is fixedly connected to the top of the first ultra-high molecular weight polyethylene fiber layer (102) by an adhesive, and the top of the nanofiber membrane (101) is fixedly connected to the bottom of the first aramid fiber layer (103) by an adhesive.

3. The dual layer breathable fiber membrane according to claim 2, wherein: The top of the first aramid fiber layer (103) is fixedly connected to the bottom of the first polyurethane elastic fiber layer (104) by an adhesive, and the top of the first polyurethane elastic fiber layer (104) is fixedly connected to the bottom of the second polyurethane elastic fiber layer (204) by an adhesive.

4. The dual layer breathable fiber membrane according to claim 3, characterized in that: The top of the second polyurethane elastic fiber layer (204) is fixedly connected to the bottom of the second aramid fiber layer (203) by an adhesive, and the top of the second aramid fiber layer (203) is fixedly connected to the bottom of the glass fiber membrane (201) by an adhesive.

5. The dual layer breathable fiber membrane according to claim 1, wherein: The top of the glass fiber membrane (201) is fixedly connected to the bottom of the second ultra-high molecular weight polyethylene fiber layer (202) by an adhesive, and the glass fiber membrane (201) is located above the nanofiber membrane (101).

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