Composite non-woven fabric with high dust holding capacity

Abstract

The utility model discloses a composite non-woven fabric with high dust holding capacity. The composite non-woven fabric comprises a supporting non-woven fabric layer, an antibacterial non-woven fabric layer, an adsorption non-woven fabric layer and a flame-retardant fiber layer which are compounded through a dotted, linear or netted flame-retardant adhesive, the flame-retardant fiber layer is an aramid 1313 spunlace non-woven fabric, fibers used by the adsorption non-woven fabric layer are three-dimensional crimp hollow polyester fibers, each three-dimensional crimp hollow polyester fiber comprises a fiber body, a polydopamine layer and a ferroferric oxide nano-particle layer, and the fiber body is further provided with a hollow part. When the high-dust-holding-capacity composite non-woven fabric is used as a filtering material, due to the fact that the high-dust-holding-capacity composite non-woven fabric comprises the adsorption non-woven fabric layer made of the three-dimensional curled hollow polyester fibers, the high-dust-holding-capacity composite non-woven fabric is more fluffy and higher in dust holding capacity. And the ferroferric oxide nanoparticles used on the surface have good adsorbability and are more durable due to the electrostatic effect of the ferroferric oxide nanoparticles. And the used antibacterial non-woven fabric layer can improve the antibacterial effect.

Description

Technical Field

[0001] The utility model relates to a composite non-woven fabric with high dust holding capacity, belonging to the technical field of non-woven fabrics. Background Art

[0002] Non-woven fabrics, also known as non-woven fabrics and needle-punched cotton, are made of oriented or random fibers and are called cloth because they have the appearance and certain properties of cloth. Non-woven fabrics are moisture-proof, breathable, flexible, lightweight, non-combustible, easily decomposable, non-toxic and non-irritating, colorful, and inexpensive. With the continuous improvement of living standards, people have higher and higher requirements for indoor environments. In the fields of air purification, mask protection, and isolation materials, meltblown fabrics have become an effective tool for filtering bacteria, dust, aerosols, and other substances. However, meltblown non-woven fabrics require electret treatment to have good adsorption properties, but meltblown non-woven fabrics have the characteristics of short-term electrostatic adsorption and low dust holding capacity. How to prepare a composite non-woven fabric with high dust holding capacity has become a problem to be solved. Utility Model Content

[0003] The utility model aims to provide a composite non-woven fabric with high dust holding capacity, which can improve the dust holding capacity of the adsorption non-woven fabric layer by using three-dimensional curled hollow polyester fibers.

[0004] In order to solve the above technical problems, the purpose of this utility model is achieved as follows:

[0005] The utility model relates to a high dust holding capacity composite non-woven fabric, comprising a supporting non-woven fabric layer, an antibacterial non-woven fabric layer, an adsorption non-woven fabric layer and a flame retardant fiber layer which are composited by a dot-shaped, line-shaped or mesh-shaped flame retardant adhesive;

[0006] The flame-retardant fiber layer is aramid 1313 spunlace non-woven fabric, and the fiber used in the adsorption non-woven fabric layer is three-dimensional curled hollow polyester fiber. The three-dimensional curled hollow polyester fiber includes a fiber body, a polydopamine layer and a ferroferric oxide nanoparticle layer, and the fiber body also has a hollow part.

[0007] On the basis of the above solution and as a preferred solution of the above solution: the antibacterial non-woven fabric layer is a rod-shaped nano zinc oxide / polypropylene non-woven fabric.

[0008] On the basis of the above solution and as a preferred solution of the above solution: the supporting non-woven fabric layer is a glass fiber non-woven fabric.

[0009] On the basis of the above solution and as a preferred solution of the above solution: an electrostatically charged meltblown non-woven fabric layer is provided between the antibacterial non-woven fabric layer and the adsorption non-woven fabric layer.

[0010] On the basis of the above solution and as a preferred solution of the above solution: the surface of the supporting non-woven fabric layer away from the antibacterial non-woven fabric layer is composited with a PTFE microporous membrane.

[0011] On the basis of the above solution and as a preferred solution of the above solution: the aramid 1313 fibers used in the aramid 1313 spunlace non-woven fabric have a water repellent attached to their surface.

[0012] The beneficial effects of the present invention are as follows: the high-dust-holding capacity composite nonwoven fabric of the present invention, when used as a filter material, is more fluffy and has a higher dust-holding capacity due to the inclusion of an adsorbent nonwoven fabric layer made of three-dimensional curled hollow polyester fibers. Furthermore, the ferroferric oxide nanoparticles used on its surface have good adsorption properties and are more durable due to their inherent electrostatic effect. Furthermore, the antibacterial nonwoven fabric layer employed can enhance antibacterial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 2. It is a schematic structural diagram of the high dust holding capacity composite non-woven fabric involved in Example 1;

[0014] Figure 2 Schematic diagram of the cross-sectional structure of the three-dimensional curled hollow polyester fiber involved in Example 1;

[0015] Figure 3 Schematic diagram of the structure of the high dust holding capacity composite non-woven fabric involved in Example 2.

[0016] The markings in the figure are as follows: 1-support non-woven fabric layer; 2-antibacterial non-woven fabric layer; 3-absorption non-woven fabric layer; 4-flame retardant fiber layer; 5-electrostatically charged melt-blown non-woven fabric layer; 6-microporous membrane; 11-fiber body; 12-polydopamine layer; 13-ferroferric oxide nanoparticle layer; 14-hollow part. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] Combine Figure 1 and Figure 2 This embodiment is described in detail. The high-dust-holding capacity composite nonwoven fabric involved in this embodiment includes a supporting nonwoven fabric layer 1, an antibacterial nonwoven fabric layer 2, an adsorbent nonwoven fabric layer 3, and a flame-retardant fiber layer 4, all of which are bonded together using a dot-, line-, or mesh-shaped flame-retardant adhesive. The flame-retardant fiber layer 4 serves as the dust-facing surface.

[0020] The fibers used in the adsorption non-woven fabric layer 3 are three-dimensional curled hollow polyester fibers, which include a fiber body 11, a polydopamine layer 12, and a ferroferric oxide nanoparticle layer 13. The fiber body 11 also has a hollow portion 14. Compared with ordinary circular cross-section non-curled polyester fibers, the three-dimensional curled hollow polyester fibers form a more fluffy non-woven fabric with a larger dust holding capacity. The ferroferric oxide nanoparticles used in the ferroferric oxide nanoparticle layer 13 have a good electrostatic effect and therefore have good adsorption properties. The flame-retardant and antibacterial composite non-woven fabric involved in this embodiment can absorb dust in the air when used as a wall cloth, thereby improving the living environment. The use of the hollow portion also has a good heat insulation effect.

[0021] Furthermore, the antibacterial nonwoven fabric layer 2 is a rod-shaped nano zinc oxide / polypropylene nonwoven fabric. The antibacterial nonwoven fabric 2 can also be a melt-blown nonwoven fabric with a nano silver antibacterial agent attached to the surface. It has a good antibacterial effect and can prevent the growth of bacteria inside the nonwoven fabric.

[0022] Furthermore, the supporting non-woven fabric layer 1 is a glass fiber non-woven fabric, which has good rigidity and improves the strength of the composite non-woven fabric involved in this embodiment.

[0023] Furthermore, the flame retardant fiber layer 4 is aramid 1313 spunlace non-woven fabric. Aramid 1313 fiber not only has good flame retardant effect, but also has high temperature resistance.

[0024] Example 2

[0025] Combine Figure 3 The high dust holding capacity composite nonwoven fabric of this embodiment is different from that of the first embodiment in that an electrostatically charged meltblown nonwoven fabric layer 5 is provided between the antibacterial nonwoven fabric layer 2 and the adsorption nonwoven fabric layer 3.

[0026] Another difference from the first embodiment is that a PTFE microporous membrane 6 is compounded on the surface of the supporting non-woven fabric layer 1 away from the antibacterial non-woven fabric layer 2 .

[0027] Example 3

[0028] The high dust holding capacity composite non-woven fabric involved in this embodiment is different from that of the second embodiment in that the aramid 1313 fibers used in the aramid 1313 spunlace non-woven fabric have a water repellent attached to their surfaces.

[0029] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A high dust holding capacity composite nonwoven fabric, characterized in that: It comprises a supporting non-woven fabric layer (1), an antibacterial non-woven fabric layer (2), an adsorbent non-woven fabric layer (3) and a flame retardant fiber layer (4) which are compounded by a dot-shaped, line-shaped or mesh-shaped flame retardant adhesive; The flame-retardant fiber layer (4) is an aramid 1313 spunlace non-woven fabric, and the fibers used in the adsorption non-woven fabric layer (3) are three-dimensional curled hollow polyester fibers. The three-dimensional curled hollow polyester fibers include a fiber body (11), a polydopamine layer (12), and a ferrosoferric oxide nanoparticle layer (13), and the fiber body (11) also has a hollow portion (14).

2. A high dust holding capacity composite nonwoven fabric according to claim 1, characterized in that: The antibacterial non-woven fabric layer (2) is a rod-shaped nano zinc oxide / polypropylene non-woven fabric.

3. The high dust holding capacity composite nonwoven fabric according to claim 1, characterized in that: The supporting non-woven fabric layer (1) is glass fiber non-woven fabric.

4. The high dust holding capacity composite nonwoven fabric according to claim 1, characterized in that: An electrostatically charged melt-blown non-woven fabric layer (5) is provided between the antibacterial non-woven fabric layer (2) and the adsorption non-woven fabric layer (3).

5. The high dust holding capacity composite nonwoven fabric according to claim 4, characterized in that: The surface of the supporting non-woven fabric layer (1) away from the antibacterial non-woven fabric layer (2) is composited with a PTFE microporous membrane (6).

6. The high dust holding capacity composite nonwoven fabric according to claim 5, characterized in that: A water repellent is attached to the surface of the aramid 1313 fiber used in the aramid 1313 spunlace non-woven fabric.

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