Superfine composite fiber non-woven fabric

Abstract

The utility model relates to the technical field of textile materials, and discloses a superfine composite fiber non-woven fabric which comprises a reinforced fiber layer, the reinforced fiber layer is made of aramid fibers, and high-temperature-resistant polymer base materials are arranged at the top and the bottom of the reinforced fiber layer. High-strength polymer fibers are arranged on the opposite sides of the high-temperature-resistant polymer base materials at the top and the bottom, superfine fibers are arranged on the opposite sides of the high-strength polymer fibers at the top and the bottom, and uniformly distributed ceramic micro powder is arranged on the opposite sides of the superfine fibers at the top and the bottom. According to the high-temperature-resistant non-woven fabric, the reinforced fiber layer aramid fibers are arranged, the aramid fibers have extremely high heat resistance, the non-woven fabric can keep good dimensional stability and physical performance under the high-temperature condition, the high-temperature-resistant polymer base material and the ceramic micro powder arranged on the outer layer are matched and added into the non-woven fabric, the heat conduction efficiency of the non-woven fabric can be reduced, and the heat conduction performance of the non-woven fabric is improved. The problem that the non-woven fabric cannot be in contact with a high-temperature object for a long time in a high-temperature environment is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile material technical field especially relates to super fine composite fiber non -woven fabric. BACKGROUND

[0002] Super fine composite fiber non -woven fabric refers to the non -woven fabric made of super fine composite fiber through specific process.It is not by traditional yarn interlacing, braiding, but the fiber is directly bonded together by physical or chemical method and forms sheet, fiber web or batt, although soft, but super fine composite fiber non -woven fabric has higher strength and toughness, is not easy to tear, break, and has good durability, can bear a certain degree of stretch and friction.

[0003] The existing super fine composite fiber non -woven fabric is usually composed of two or more than two different material super fine fibers, can be reinforced and formed by heat pressing, needling, water jet, chemical bonding multiple methods, and may have performance decline problem under high temperature environment, such as fiber softening, shrinkage or even melting, which limits its application in some high temperature environment, for example, cannot be used as heat insulation material for long time contact with high temperature object. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides super fine composite fiber non -woven fabric, aims at improving the problem that non -woven fabric cannot be used for long time contact with high temperature object under high temperature environment.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: super fine composite fiber non -woven fabric, including reinforced fiber layer, the reinforced fiber layer material is aramid fiber, the reinforced fiber layer top and bottom are all provided with high temperature resistant polymer base material, the high temperature resistant polymer base material opposite side of top and bottom is all provided with high strength polymer fiber, the high strength polymer fiber opposite side of top and bottom is all provided with super fine fiber, the super fine fiber opposite side of top and bottom is all provided with evenly distributed ceramic micro powder, the super fine fiber outer surface is provided with evenly distributed hole, the super fine fiber periphery is fixedly connected with the edge, the super fine fiber outer surface of top and bottom is all provided with anticorrosion assembly, the anticorrosion assembly is used to prevent degradation and breakage when non -woven fabric is in chemical corrosion environment.

[0006] Preferably, the anticorrosion assembly includes two chemical corrosion resistant polymers, the opposite sides of the two chemical corrosion resistant polymers are tightly attached to the super fine fiber, the opposite sides of the two chemical corrosion resistant polymers are tightly attached to the ceramic micro powder, and the two ceramic micro powders are evenly sprayed with anticorrosion additives.

[0007] Preferably, the bottom of the chemical corrosion resistant polymer is fixedly connected with evenly distributed silica gel points, and the silica gel points are used to prevent slipping when the non -woven fabric is used.

[0008] Preferably, the high-temperature resistant polymer base material is polyimide.

[0009] Preferably, the chemical corrosion resistant polymer material is polytetrafluoroethylene.

[0010] Preferably, the corrosion resistant additive material is silicate.

[0011] Preferably, the superfine fiber material is polyester fiber with a diameter of 50 nanometers.

[0012] Preferably, the reinforcing fiber material, the high-temperature resistant polymer base material, the high-strength polymer fiber and the chemical corrosion resistant polymer are formed into a fiber web by air laying; the fiber web is hot-pressed or needled to reinforce to form a non-woven fabric base material.

[0013] The utility model has the advantages of the following beneficial effects:

[0014] 1. In the utility model, the aramid fiber layer is set by the reinforcing fiber, the aramid fiber has very high heat resistance, can make the non-woven fabric keep good dimensional stability and physical performance under high temperature conditions, and the high-temperature resistant polymer base material and ceramic powder are set on the outer layer, which can reduce the heat conduction efficiency of the non-woven fabric, and solve the problem that the non-woven fabric cannot be used for long-time contact with high-temperature objects under high-temperature environment.

[0015] 2. In the utility model, a layer of chemical corrosion resistant polymer is additionally added to the superfine fiber, which can resist the erosion of various chemicals, so that the non-woven fabric is not easy to age and degrade in complex chemical environment, thereby prolonging the service life of the non-woven fabric, and the base material between the upper and lower ceramic powders is sprayed with corrosion resistant additives to enhance the chemical stability of the material, thereby solving the problem that the non-woven fabric is easily corroded and damaged when applied in the chemical industry. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the superfine composite fiber non-woven fabric according to the utility model;

[0017] Figure 2 It is a schematic view of the reinforcing fiber layer of the superfine composite fiber non-woven fabric according to the utility model;

[0018] Figure 3 It is a silica gel point schematic view of the superfine composite fiber non-woven fabric according to the utility model.

[0019] LEGEND:

[0020] 1, reinforced fiber layer; 2, high temperature resistant polymer base material; 3, superfine fiber; 4, ceramic powder; 5, chemical corrosion resistant polymer; 6, corrosion resistant additive; 7, hole; 8, silica gel point; 9, edge covering; 10, high strength polymer fiber. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the specification of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Referring to Figures 1-3 , the utility model provides an embodiment: superfine composite fiber non - woven fabric, including reinforced fiber layer 1, reinforced fiber layer 1 material is aramid fiber, reinforced fiber layer 1 top and bottom are all provided with high temperature resistant polymer base material 2, top and bottom high temperature resistant polymer base material 2 opposite side is all provided with high strength polymer fiber 10, top and bottom high strength polymer fiber 10 opposite side is all provided with superfine fiber 3, top and bottom superfine fiber 3 opposite side is all provided with the ceramic powder 4 that is evenly distributed, the superfine fiber 3 outer surface is provided with the evenly distributed hole 7, the superfine fiber 3 periphery is fixedly connected with edge covering 9, top and bottom superfine fiber 3 outer surface is provided with corrosion -resistant component, corrosion -resistant component is used to prevent the degradation breakage condition when non -woven fabric is in chemical corrosion environment.

[0023] Specifically, when non -woven fabric is made, the center material is the aramid fiber of reinforced fiber layer 1, aramid fiber has very high strength, adds in non -woven fabric as reinforced fiber layer 1, can significantly improve the tensile strength of non -woven fabric, cooperate in the high strength polymer fiber 10 of outer layer setting and the fixed edge covering 9 of non -woven fabric periphery, can greatly improve the ability of material resistance to tear, make it more difficult to be torn in the use process, prolong the service life, and aramid fiber can be used in high temperature environment above 200 DEG C for a long time, can make non -woven fabric keep good dimensional stability and physical performance under high temperature conditions, cooperate with the high temperature resistant polymer base material 2 of outer layer setting and ceramic powder 4, add in non -woven fabric can reduce the heat conduction efficiency of non -woven fabric, make it have good heat insulation, make non -woven fabric can resist high temperature in the use process, and also can play certain heat insulation effect.

[0024] Referring to Figure 2 , the corrosion -resistant component includes two chemical corrosion resistant polymers 5, two chemical corrosion resistant polymers 5 opposite side is tightly combined between superfine fiber 3, two chemical corrosion resistant polymers 5 opposite side is tightly combined between ceramic powder 4, two ceramic powders 4 are evenly sprayed with corrosion -resistant additive 6.

[0025] Specifically, by adding a layer of chemical corrosion resistant polymer 5 outside the superfine fibers 3, it can resist the erosion of various chemicals, so that the non-woven fabric is not easy to age and degrade in complex chemical environment, thereby prolonging the service life of the non-woven fabric. The base material between the upper and lower two layers of ceramic powder 4 is sprayed with corrosion resistant additive 6 to enhance the chemical stability of the material, solving the problem of damage caused by corrosion when the non-woven fabric is applied in the chemical industry.

[0026] Referring to Figure 2 , the bottom of the chemical corrosion resistant polymer 5 is fixedly connected with evenly distributed silica gel points 8, which are used to prevent slipping when the non-woven fabric is used.

[0027] Specifically, by setting evenly distributed silica gel points 8 at the bottom of the non-woven fabric, the non-woven fabric can play a role in preventing slipping when used as a pad in the chemical industry.

[0028] Referring to Figure 2 , the high temperature resistant polymer base material 2 is made of polyimide.

[0029] Specifically, polyimide has excellent thermal stability and can withstand high temperature without significant deformation, decomposition or performance degradation. When the non-woven fabric is used in high temperature environment, the non-woven fabric using polyimide as the high temperature resistant polymer base material 2 can maintain structural integrity and stable performance, ensuring that the non-woven fabric can still function normally at high temperature.

[0030] Referring to Figure 2 , the chemical corrosion resistant polymer 5 is made of polytetrafluoroethylene.

[0031] Specifically, polytetrafluoroethylene has excellent chemical corrosion resistance and almost no reaction with any chemical substance. When it is used as a chemical corrosion resistant polymer 5 in non-woven fabric, it can make the non-woven fabric stable in acid, alkali and organic solvent corrosion medium, not corroded, dissolved or degraded, greatly prolonging the service life of the non-woven fabric.

[0032] Referring to Figure 2 , the corrosion resistant additive 6 is made of silicate.

[0033] Specifically, silicate can form a continuous, certain thickness and dense protective film on the surface of the fibers of the non-woven fabric. This protective film can effectively block the direct contact of external corrosive substances with the fibers of the non-woven fabric, like a barrier, reducing the erosion of corrosive medium to the fibers, thereby improving the corrosion resistance of the non-woven fabric.

[0034] Referring to Figure 2 , the superfine fibers 3 are made of polyester fibers with a diameter of 50 nanometers.

[0035] Specifically, the 50 nanometer polyester fiber diameter is extremely small, the non-woven fabric formed has very small pores, can effectively intercept and filter small particles in the air or liquid, at the same time has soft and smooth hand feeling, and the holes 7 are formed on the outer surface of the ultra-fine fiber 3, so that the other base materials between the two layers of ultra-fine fibers 3 can increase the air permeability, thereby effectively dissipating heat.

[0036] With reference to Figure 2 The reinforcing fiber layer 1, the high-temperature-resistant polymer base material 2, the high-strength polymer fiber 10 and the chemical corrosion-resistant polymer 5 form a fiber web by air laying; the fiber web is needle-punched to form a non-woven fabric base.

[0037] Specifically, first, the fiber raw material is opened, and the dispersed fibers enter the condensation device with airflow. The fibers gradually settle down from the airflow under the action of gravity, centrifugal force and friction, and form a uniform fiber web on the surface of the condensation curtain or condensation roller. Then, the multiple layers of fluffy fiber web are needle-punched to form a non-woven fabric with certain strength and stability.

[0038] Working principle: when the non-woven fabric is made, the central material is the aramid fiber of the reinforcing fiber layer 1. The aramid fiber has extremely high strength, and when it is added to the non-woven fabric as the reinforcing fiber layer 1, it can significantly improve the tensile strength of the non-woven fabric. In combination with the high-strength polymer fiber 10 arranged on the outer layer and the non-woven fabric four around the fixed hem 9, the material can greatly improve the resistance to tearing, so that it is less likely to be torn during use, prolonging the service life. The high-temperature-resistant polymer base material 2 and ceramic powder 4 arranged on the outer layer of the reinforcing fiber layer 1 are added to the non-woven fabric, which can reduce the heat conduction efficiency of the non-woven fabric, so that it has good heat insulation, so that the non-woven fabric can withstand high temperature and also has a certain heat insulation effect during use.

[0039] By adding a layer of chemical corrosion-resistant polymer 5 outside the ultra-fine fiber 3, the non-woven fabric can resist the erosion of various chemicals, so that it is not easy to age and degrade in a complex chemical environment, thereby prolonging the service life of the non-woven fabric. The base material between the upper and lower two layers of ceramic powder 4 is sprayed with an anti-corrosion additive 6 to enhance the chemical stability of the material, and the evenly distributed silica gel points 8 are arranged at the bottom of the non-woven fabric. When the non-woven fabric is used as a pad in the chemical industry, it can play a role in preventing slipping, and can be less corroded and damaged when chemical products come into contact with the non-woven fabric, thereby increasing the service life.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A nonwoven fabric of ultrafine composite fibers comprising a layer of reinforcing fibers (1), characterized in that: The reinforcing fiber layer (1) is made of aramid fiber, the top and bottom of the reinforcing fiber layer (1) are provided with high-temperature-resistant polymer base material (2), the side opposite to the high-temperature-resistant polymer base material (2) of the top and bottom is provided with high-strength polymer fiber (10), the side opposite to the high-strength polymer fiber (10) of the top and bottom is provided with superfine fiber (3), the side opposite to the superfine fiber (3) of the top and bottom is provided with uniformly distributed ceramic powder (4), the outer surface of the superfine fiber (3) is provided with uniformly distributed holes (7), the superfine fiber (3) is fixedly connected with the edge covering (9) around, the outer surface of the superfine fiber (3) of the top and bottom is provided with corrosion-resistant assembly, the corrosion-resistant assembly is used for preventing degradation and damage of non-woven fabric in chemical corrosion environment.

2. The ultrafine composite fiber nonwoven fabric according to claim 1, characterized by: The corrosion-resistant assembly includes two chemical corrosion-resistant polymers (5), the opposite sides of the two chemical corrosion-resistant polymers (5) are tightly combined with the superfine fiber (3), the opposite sides of the two chemical corrosion-resistant polymers (5) are tightly combined with the ceramic powder (4), and the two ceramic powders (4) are uniformly sprayed with corrosion-resistant additives (6).

3. The ultrafine composite fiber nonwoven fabric according to claim 2, characterized by: The bottom of the chemical corrosion-resistant polymer (5) is fixedly connected with uniformly distributed silica gel points (8), and the silica gel points (8) are used for preventing slip of non-woven fabric in use.

4. The ultrafine composite fiber nonwoven fabric according to claim 1, characterized by: The high-temperature-resistant polymer base material (2) is made of polyimide.

5. The ultrafine composite fiber nonwoven fabric according to claim 2, characterized by: The chemical corrosion-resistant polymer (5) is made of polytetrafluoroethylene.

6. The ultrafine composite fiber nonwoven fabric according to claim 2, characterized by: The corrosion-resistant additive (6) is made of silicate.

7. The ultrafine composite fiber nonwoven fabric according to claim 1, characterized by: The superfine fiber (3) is made of polyester fiber with a diameter of 50 nanometers.

8. The ultrafine composite fiber nonwoven fabric according to claim 1, characterized by: The reinforcing fiber layer (1), the high-temperature-resistant polymer base material (2), the high-strength polymer fiber (10) and the chemical corrosion-resistant polymer (5) are formed into a fiber web by air laying; the fiber web is heat-pressed or needled to be reinforced to form a non-woven fabric base material.

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