Fire-retardant thermal insulation fabric and thermal insulation fire-retardant protective clothing

Abstract

The application discloses a kind of flame-retardant thermal insulation fabric and a kind of thermal insulation flame-retardant protective clothing, the flame-retardant thermal insulation fabric includes flame-retardant layer, thermal insulation layer and comfort layer;Flame-retardant layer, thermal insulation layer and comfort layer are sequentially arranged from outside to inside;Thermal insulation layer includes nonwoven fabric matrix and several channels, several channels are arranged through the nonwoven fabric matrix;The thickness of thermal insulation layer is 1-3mm, the thermal insulation layer with channel makes the fabric have good thermal insulation effect, while, have good air permeability, simultaneously set several channels in the volume fraction of thermal insulation layer is 10%-20%, can effectively improve air permeability, improve air covering rate when heated, play the purpose of heat insulation, simultaneously make the fabric maintain lighter mass.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of flame-retardant thermal insulation fabric, and relates to a flame-retardant thermal insulation fabric and a thermal insulation flame-retardant protective clothing. BACKGROUND

[0002] When the staff works in high-temperature environments such as fire rescue, electric welding and metallurgy, high-temperature protective clothing needs to be worn to protect the skin from being burned.

[0003] With the rapid development of social economy, people have higher requirements for the comfort of high-temperature flame-retardant protective clothing while pursuing safety protection. Most of the high-temperature flame-retardant protective clothing on the market has the following two disadvantages:

[0004] ① composed of multiple layers of fabric, on the one hand, it is relatively heavy, increasing the physical consumption of the wearer, on the other hand, the fabric has poor air permeability.

[0005] ② pure cotton, cow leather and other high-temperature flame-retardant protective clothing have the disadvantages of heavy weight, poor air permeability, short service life and poor protection effect.

[0006] To solve the above problems, the present application designs a new type of flame-retardant thermal insulation fabric, which is composed of three layers of structure, and has the advantages of light weight, comfort and air permeability while ensuring high-temperature protection effect, and can be used to make high-temperature thermal insulation flame-retardant protective clothing in high-temperature working environments. SUMMARY

[0007] In view of the problems in the prior art, the present application provides a flame-retardant thermal insulation fabric and a thermal insulation flame-retardant protective clothing, thereby solving the technical problems in the prior art that the protective clothing is heavy, has poor air permeability and poor comfort while ensuring high-temperature protection effect.

[0008] The present application is realized by the following technical solutions:

[0009] A flame-retardant thermal insulation fabric, comprising a flame-retardant layer, a thermal insulation layer and a comfort layer, wherein the flame-retardant layer, the thermal insulation layer and the comfort layer are sequentially arranged from outside to inside.

[0010] The thermal insulation layer comprises a non-woven fabric substrate and a plurality of channels, and the plurality of channels are arranged through the non-woven fabric substrate.

[0011] The thickness of the thermal insulation layer is 1-3mm.

[0012] The volume fraction of the plurality of channels in the thermal insulation layer is 10%-20%.

[0013] Preferably, the flame-retardant layer is woven by pure meta-aramid fibers.

[0014] Preferably, the flame-retardant layer is woven by meta-aramid fibers, flame-retardant viscose fibers and para-aramid fibers, the proportion of meta-aramid fibers is 70-80%, and the proportion of para-aramid fibers is 10-15%.

[0015] Preferably, the thermal insulation layer is prepared by meta-aramid fiber web and water-soluble polyvinyl alcohol fiber filaments.

[0016] Preferably, the water-soluble polyvinyl alcohol fiber filaments have a diameter of 80D-200D.

[0017] Preferably, the meta-aramid fibers have a diameter of 1.5D-8D.

[0018] Preferably, the comfort layer is prepared by flame-retardant viscose fibers and meta-aramid fibers.

[0019] Preferably, the mass fraction of the flame-retardant viscose fibers in the comfort layer is greater than 80%.

[0020] Preferably, the plurality of channels are uniformly arranged in the non-woven fabric substrate.

[0021] A thermal insulation and flame-retardant protective clothing is made of the flame-retardant thermal insulation and heat preservation fabric.

[0022] Compared with the prior art, the present application has the following beneficial technical effects:

[0023] The thermal insulation and flame-retardant protective clothing is made of the flame-retardant thermal insulation and heat preservation fabric.

[0024] The flame-retardant layer is woven by pure meta-aramid fibers or meta-aramid fibers, flame-retardant viscose fibers and para-aramid fibers, when the flame-retardant layer is woven by meta-aramid fibers, flame-retardant viscose fibers and para-aramid fibers, the proportion of meta-aramid fibers is 70-80%, and the proportion of para-aramid fibers is 10-15%, so that the high proportion of aramid fibers can maintain high tear strength and breaking strength of the fabric and improve the service life of the fabric.

[0025] The thermal insulation layer is prepared by meta-aramid fiber web and water-soluble polyvinyl alcohol fiber filaments, which effectively improves the tear strength and breaking strength of the fabric and improves the service life of the fabric.

[0026] The diameter of the water-soluble polyvinyl alcohol fiber filament is 80D-200D, which can effectively form channels, maintain good air permeability and heat insulation effect, and make the fabric maintain a lighter mass.

[0027] The diameter of the meta-aramid fiber is 1.5D-8D, which can effectively ensure the tearing strength and breaking strength of the fabric and improve the service life of the fabric.

[0028] The comfort layer is made of flame-retardant viscose fiber and meta-aramid fiber. The flame-retardant viscose fiber is soft and comfortable, used as an inner layer fabric, which effectively improves the skin-friendly feeling of the fabric and improves the wearing experience of the fabric while maintaining good flame-retardant and heat-insulating effect of the fabric.

[0029] The mass fraction of the flame-retardant viscose fiber in the comfort layer is greater than 80%, which effectively ensures the skin-friendly feeling of the fabric and ensures the wearing experience of the fabric while maintaining good flame-retardant and heat-insulating effect of the fabric.

[0030] The plurality of channels are uniformly arranged in the non-woven fabric substrate, so that the heat dissipation of the fabric is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0032] Figure 1 The structure of the flame-retardant and heat-insulating fabric in the present application is shown in the figure.

[0033] Figure 2 The structure of the sheet layer in the heat-insulating layer in the present application is shown in the figure.

[0034] Figure 3 The structure of the heat-insulating layer in the present application is shown in the figure.

[0035] Wherein: 1, flame-retardant layer, 2, heat-insulating layer, 3, comfort layer, 4, meta-aramid fiber web, 5, water-soluble polyvinyl alcohol fiber filament, 6, sheet layer, 7, channel, 8, non-woven fabric substrate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but merely represent selected embodiments of the application. Based upon the embodiments of the application, all other embodiments that would be obvious to one of ordinary skill in the art and that are within the scope of the application belong to the scope of the application.

[0038] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0039] In the description of the embodiments of the application, it should be noted that if the terms such as "upper", "lower", "horizontal", "inner", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0041] In the description of the embodiments of the application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0042] The application will be further described in detail below in combination with the drawings:

[0043] The application designs a new type of flame-retardant heat-insulating fabric, which is composed of three layers of structure, has the effects of light weight, comfort and air permeability while ensuring high-temperature protection effect, and can be used to make high-temperature heat-insulating flame-retardant protective clothing in high-temperature working environment.

[0044] The overall structure of the fabric is as shown in Figure 1As shown: from outside to inside, the flame-retardant layer 1, the thermal insulation layer 2, the comfort layer 3.

[0045] The flame-retardant layer 1 of the flame-retardant thermal insulation fabric is woven by flame-retardant fibers. The flame-retardant thermal insulation outer layer can be woven by pure meta-aramid fibers, or can be woven by meta-aramid fibers, flame-retardant viscose fibers, and para-aramid fibers. When the flame-retardant layer is woven by meta-aramid fibers, flame-retardant viscose fibers, and para-aramid fibers, the proportion of meta-aramid fibers is 70% to 80%, and the proportion of para-aramid fibers is 10% to 15%. The high proportion of aramid fibers can maintain high tear strength and breaking strength of the fabric, and improve the service life of the fabric.

[0046] The thermal insulation layer 2 of the flame-retardant thermal insulation fabric is a non-woven fabric made of a meta-aramid fiber web and water-soluble polyvinyl alcohol (PVA) fiber filaments. The water-soluble polyvinyl alcohol (PVA) fiber filaments are dissolved in water to make the non-woven fabric. This effectively improves the tear strength and breaking strength of the fabric, and improves the service life of the fabric. The specific process is as follows Figure 2 As shown, the meta-aramid fiber web is combed and laid to form a meta-aramid fiber web 4 with a certain thickness and area density. The area density value is 55 to 75 g / m 2 Then evenly disperse water-soluble polyvinyl alcohol (PVA) fiber filaments 5 on the surface of the meta-aramid fiber web 4 to form a sheet layer 6. The distribution of the meta-aramid fiber web 4 and the water-soluble polyvinyl alcohol (PVA) fiber filaments 5 is as shown Figure 2 Then several sheet layers 6 are combined to form a porous thermal insulation layer fiber web. The fiber web is conveyed to the net of the hydroentangling machine and pierced by high-pressure hydroentangling needles, so that the meta-aramid fiber web 4 and the water-soluble polyvinyl alcohol fiber filaments 5 are intertwined and compressed to form an integral non-woven fabric structure. The integral structure is placed in hot water to dissolve the water-soluble polyvinyl alcohol (PVA) fiber filaments 5 distributed in the sheet layer 6 structure, forming a thermal insulation layer 2, i.e. a porous thermal insulation layer. The thermal insulation layer includes a non-woven fabric substrate 8 and a pore 7 distributed in the non-woven fabric substrate 8 after the water-soluble polyvinyl alcohol (PVA) fiber filaments are dissolved. The structure diagram is as shown Figure 3 More preferably, several pores 7 are uniformly distributed in the non-woven fabric substrate 8, i.e. several pores 7 are uniformly distributed in the thermal insulation layer 2. Compared with traditional thermal insulation non-woven fabric, the porous thermal insulation layer is lighter in weight and can wrap more air layers, and has better thermal insulation effect. The thickness of the thermal insulation layer 2 is 1 to 3 mm, so that the fabric has good thermal insulation effect and good air permeability.

[0047] The volume fraction of the water-soluble polyvinyl alcohol (PVA) fiber filament in the process of manufacturing the non-woven fabric is preferably 10% to 20%, that is, the volume fraction of the plurality of pores 7 in the thermal insulation layer 2 after being dissolved is 10% to 20%, which can effectively improve the air permeability and the air covering rate when being heated, so as to achieve the purpose of heat insulation, and meanwhile, the fabric can maintain a lighter weight. The diameter of the water-soluble polyvinyl alcohol (PVA) fiber filament is preferably 80D to 200D, which can effectively form pores, maintain good air permeability and heat insulation effect, and meanwhile, the fabric can maintain a lighter weight. The diameter of the meta-aramid fiber is 1.5D to 8D, which can effectively ensure the tearing strength and breaking strength of the fabric, and improve the service life of the fabric.

[0048] The innermost structure of the fabric is the comfort layer 3, which is woven by the meta-aramid fiber and the flame-retardant viscose fiber with a high proportion. The flame-retardant viscose has good skin contact and good water and air permeability, and can discharge the sweat on the skin surface, so as to maintain the skin surface clean and comfortable. More preferably, the mass fraction of the flame-retardant viscose fiber in the comfort layer is greater than 80%, which can effectively ensure the skin feeling of the fabric and the wearing experience of the fabric while maintaining the good flame-retardant and heat-insulating effect of the fabric.

[0049] Further, the following examples are used to illustrate the present application. The porous thermal insulation layer of the novel flame-retardant and heat-insulating fabric is formed by the following steps. First, a pure meta-aramid fiber web is formed by carding and laying, and then a 5mm-thick meta-aramid fiber web is formed. Then, 100D water-soluble polyvinyl alcohol (PVA) fiber filaments are uniformly scattered on the surface of the fiber web, so that the proportion of the fiber filaments is 15%. The pure meta-aramid fiber web and the 100D water-soluble polyvinyl alcohol (PVA) fiber filaments form a sheet 6. Six sheet 6 structure layers are combined to form a porous thermal insulation layer fiber web. The fiber web is conveyed to the water jet machine and is punctured by the high-pressure water jet needle, so that the fiber web and the filaments are intertwined and compressed to form a non-woven fabric structure. The whole structure is placed in a hot environment, and the water-soluble polyvinyl alcohol (PVA) fiber filaments distributed in the sheet 6 structure are dissolved to form a porous thermal insulation layer. The non-woven fabric substrate is composed of meta-aramid fibers, and the pores 7 are formed after the water-soluble polyvinyl alcohol (PVA) fiber filaments are dissolved.

[0050] The innermost structure of the fabric is the comfort layer, which is woven by 80% flame-retardant viscose fiber and 20% meta-aramid fiber.

[0051] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flame-retardant, heat-insulating fabric, characterized in that, It includes a flame-retardant layer (1), a heat insulation layer (2), and a comfort layer (3); the flame-retardant layer (1), the heat insulation layer (2), and the comfort layer (3) are arranged sequentially from the outside to the inside; The heat insulation layer (2) includes a nonwoven fabric substrate (8) and a plurality of channels (7), wherein the plurality of channels (7) are provided through the nonwoven fabric substrate (8); The thickness of the heat insulation layer (2) is 1~3mm; The volume fraction of the plurality of channels (7) in the insulation layer (2) is 10% to 20%; The heat insulation layer (2) is made of meta-aramid fiber web and water-soluble polyvinyl alcohol fiber filament; The diameter of the water-soluble polyvinyl alcohol fiber filament is 80D~200D; The diameter of the meta-aramid fiber is 1.5D~8D; The proportion of water-soluble polyvinyl alcohol fiber filaments in the insulation layer (2) is 15%. Meta-aramid fiber web and water-soluble polyvinyl alcohol fiber filaments form a sheet (6), and the six sheet (6) structures are combined layer by layer to form a heat insulation layer (2).

2. The flame-retardant and heat-insulating fabric according to claim 1, characterized in that, The flame-retardant layer (1) is woven from pure meta-aramid fibers.

3. The flame-retardant and heat-insulating fabric according to claim 1, characterized in that, The flame retardant layer (1) is made of a blend of meta-aramid fiber, flame retardant viscose fiber and para-aramid fiber, wherein the proportion of meta-aramid fiber is 70% to 80% and the proportion of para-aramid fiber is 10% to 15%.

4. The flame-retardant and heat-insulating fabric according to claim 1, characterized in that, The comfort layer (3) is made of flame-retardant viscose fiber and meta-aramid fiber.

5. The flame-retardant and heat-insulating fabric according to claim 4, characterized in that, The flame-retardant viscose fiber has a mass fraction of more than 80% in the comfort layer (3).

6. The flame-retardant and heat-insulating fabric according to claim 1, characterized in that, The plurality of channels (7) are uniformly arranged in the nonwoven fabric matrix (8).

7. A heat-insulating and flame-retardant protective suit, characterized in that, Made from a flame-retardant, heat-insulating fabric as described in any one of claims 1 to 6.

Images