Active fire extinguishing fabric

Abstract

The invention discloses an active fire extinguishing fabric which comprises organic hollow fibers filled with a fire extinguishing agent, fiber yarns and a fireproof coating, the organic hollow fibers filled with the fire extinguishing agent and the fiber yarns are combined in a weaving mode to form the fabric, and the prepared fabric is combined with the fireproof coating to obtain the active fire extinguishing fabric. When the active fire extinguishing fabric extinguishes fire, the fireproof coating is arranged on the side away from the fire, the fabric layer is arranged on the side making contact with the fire, after flames damage the wall of the organic hollow fiber pipe, a low-boiling-point fire extinguishing agent in the organic hollow fiber pipe is sprayed out, and due to blocking of the fireproof coating, a gasified fire extinguishing agent can only diffuse downwards to the position near an ignition point to extinguish the flames; therefore, the purpose of quickly extinguishing fire is achieved.

Description

Technical Field

[0001] The invention relates to the field of fire extinguishing materials, in particular to an active fire extinguishing fabric. Background Art

[0002] There are two main types of fire blankets available on the market. One is a fabric woven with flame-retardant organic fiber yarn or inorganic fiber yarn. The main fire extinguishing mechanism is to cover the fire point to isolate oxygen. This method cannot guarantee the timeliness and safety of fire extinguishing. The other is a fire blanket containing microcapsules. The microcapsules are filled with fire extinguishing agents, which can be released by bursting at high temperatures to achieve the purpose of active fire extinguishing. However, the amount of fire extinguishing agent contained in the microcapsules is small, and the bonding strength and durability of the microcapsules and the fabric will also be affected by factors such as storage, transportation, and folding, thereby reducing the fire extinguishing efficiency. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an active fire extinguishing fabric.

[0004] The present invention is achieved by adopting the following technical solutions.

[0005] An active fire extinguishing fabric comprises an organic hollow fiber filled with a fire extinguishing agent, fiber yarn and a fire retardant coating. The organic hollow fiber filled with a fire extinguishing agent and the fiber yarn are combined by weaving to form a fabric, and the prepared fabric is combined with the fire retardant coating to obtain the active fire extinguishing fabric.

[0006] Furthermore, the organic hollow fiber is made of polyolefin or silica gel.

[0007] Furthermore, the polyolefin is selected from polyethylene or polypropylene.

[0008] Furthermore, the cavity shape of the organic hollow fiber includes circle, triangle, and star.

[0009] Furthermore, the fire extinguishing agent is selected from one or more of perfluorohexanone, 2-bromo-3,3,3-trifluoropropylene (2-btp), pentafluoroethane, and heptafluoropropane.

[0010] Furthermore, the fiber yarn is selected from organic fiber yarn and / or inorganic fiber yarn; the organic fiber yarn is selected from one or more of aramid fiber yarn, acrylic fiber yarn, polyimide fiber yarn, flame-retardant cotton fiber, and pre-oxidized silk fiber yarn.

[0011] Furthermore, the inorganic fiber yarn is selected from one or more of carbon fiber yarn, glass fiber yarn, ceramic fiber yarn, basalt fiber yarn, silicon carbide fiber yarn, and alumina fiber yarn.

[0012] Furthermore, the fire extinguishing agent is filled in the organic hollow fiber and then sealed. The organic hollow fiber is sealed by using one of AB glue, hot melt glue and UV curing glue.

[0013] Furthermore, the weaving is selected from one of shuttle weaving, shuttleless weaving, multi-phase weaving, three-dimensional weaving and special weaving.

[0014] Furthermore, the fireproof coating is made of silicone or aluminum foil.

[0015] This application has the following beneficial effects.

[0016] (1) The present invention has a simple structure and is easy to use and store: the fabric made by weaving is relatively thin, the fire extinguishing agent is contained in the middle of the fabric layer, and folding the fabric does not affect the content and life of the fire extinguishing agent in the fabric; (2) The present invention has high safety: after the flames in the fire scene destroy the hollow fiber wall, the fire extinguishing agent inside will quickly extinguish the fire, which can protect the safety of firefighters and reduce property losses; (3) The fire extinguishing agent content of the present invention is high: compared with nano-microspheres, the fire extinguishing agent is directly filled into the hollow fiber, and the content of the fire extinguishing agent is higher than that of the nano-microspheres, thereby improving the fire extinguishing ability; (4) The fire extinguishing agent of the present invention is highly efficient: when the hollow fiber tube is destroyed by the flame at the ignition point, the low-boiling-point fire extinguishing agent in the hollow fiber tube will be ejected from the destruction point under the action of pressure and directly released near the ignition point, which is equivalent to most of the fire extinguishing agent in the fabric being directly applied to the ignition site, thereby achieving the purpose of rapid fire extinguishing and reducing property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic cross-sectional view of the organic hollow fiber of the present invention; Figure 2 It is a schematic diagram of the structure of the organic hollow fiber of the present invention; Figure 3 It is a schematic diagram of the structure of an organic hollow fiber with a fire extinguishing agent filled in the middle and blocked at both ends of the present invention; Figure 4 Schematic diagram of a fabric woven from organic hollow fibers filled with a fire extinguishing agent and inorganic fiber yarns of the present invention; Figure 5 It is a schematic diagram of the overall structure of the fire extinguishing fabric of the present invention (the top is the fireproof coating, the bottom is the warp yarn and the weft yarn, and the organic hollow fiber filled with the fire extinguishing agent serves as part of the weft yarn).

[0018] Among them, 1-organic hollow fiber shell, 2-fire extinguishing agent, 3-glue seal, 11-organic hollow fiber filled with fire extinguishing agent, 12-inorganic fiber yarn, 13-organic fiber yarn, 14-fireproof coating. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] The active fire extinguishing fabric of the present invention comprises an organic hollow fiber 11 filled with a fire extinguishing agent, an organic fiber yarn 13 or an inorganic fiber yarn 12, and a fire retardant coating 14 made of silica gel / aluminum foil. The organic hollow fiber 11 filled with a fire extinguishing agent is a continuous long fiber, which is end-capped and combined with the organic / inorganic fiber yarn by weaving to form a fabric. In the weaving process, the organic hollow fiber can be used as a warp or a weft. The prepared fabric is then combined with the fire retardant coating 14 made of silica gel / aluminum foil to form an active fire extinguishing fabric product. When the active fire extinguishing fabric extinguishes a fire, the silica gel / aluminum foil coating is on the side away from the fire, and the fabric layer is on the side in contact with the fire. When the flame destroys the tube wall of the organic hollow fiber, the low-boiling point fire extinguishing agent inside is sprayed out, and the fire extinguishing agent quickly evaporates to absorb heat to produce steam and reduce the temperature near the combustion point. Due to the obstruction of the silica gel / aluminum foil coating, the gasified fire extinguishing agent can only diffuse downward to the vicinity of the ignition point to extinguish the flame, thereby achieving the purpose of rapid fire extinguishing.

[0021] Example 1

[0022] An active fire extinguishing fabric, the structural schematic diagram of which is as follows Figure 5 As shown, it is composed of organic hollow fibers 11 filled with fire extinguishing agent, organic fiber yarns 13, inorganic fiber yarns 12 and fire retardant coatings 14.

[0023] The fireproof coating 14 is a fireproof silicone coating.

[0024] The organic hollow fiber shell 1 is polypropylene, and the cavity shape is circular (Zhejiang Xinhui Membrane Technology Co., Ltd., outer diameter 2mm, inner diameter 1mm, such as Figure 2 ), the fire extinguishing agent 2 filled is perfluorohexanone, and a small fluid pump is used to load perfluorohexanone into the polypropylene hollow fiber. The sealing glue 3 at both ends of the hollow fiber is hot melt adhesive to encapsulate the hollow fiber ( Figure 3 ).

[0025] The organic fiber yarn 13 is made of 300TEX polyimide fiber yarn, and the inorganic fiber yarn 12 is made of 800TEX carbon fiber yarn.

[0026] Organic hollow fibers and fiber yarns are woven using shuttle weaving methods ( Figure 4), inorganic fiber yarn 12 is used as part of the warp and part of the weft, organic hollow fiber is used as part of the warp, and organic fiber yarn 13 is used as part of the weft, the ratio of warp to weft is 1.5:1, and among the yarns and fibers used in the fabric, the ratio of organic hollow fiber, organic fiber yarn 13 and inorganic fiber yarn 12 is 15:20:65, and the fabric density is 32*25 / inch. After manufacturing, the fabric is compounded with the fireproof silicone layer by bonding to form a temperature-resistant dense fireproof coating 14 on one side of the fabric.

[0027] During the fire-fighting application of the above-mentioned active fire-extinguishing fabric, although each organic hollow fiber 11 filled with fire extinguishing agent is independent, when the fabric encounters an open flame or is in a high temperature state (the temperature is higher than 200 degrees), the fire extinguishing agent 2 inside will be quickly sprayed out within 10 seconds due to the expansion of the fire extinguishing agent 2 or the hollow fiber wall being burned and destroyed by the high temperature, and the fire extinguishing agent 2 in the entire hollow fiber will be sprayed out under high temperature conditions, and the fire extinguishing agent 2 will be directly applied to the fire point after being sprayed. Since the fire extinguishing agent 2 absorbs a large amount of heat when it evaporates and quickly turns into gas, the temperature of the fire extinguishing area is detected online through a thermocouple, and it is found that the temperature near the ignition point can be reduced by about 150 degrees Celsius within 5 seconds after the fire extinguishing agent 2 is completely sprayed out; a portable gas measuring instrument is used to quickly sample and analyze the gas composition near the ignition point, and it is found that the oxygen content near the ignition point is reduced by 35% 5 seconds after the fire extinguishing agent 2 is completely sprayed out, thereby achieving the purpose of rapid fire extinguishing; and under the action of the dense fire-retardant coating 14, most of the fire extinguishing agent gas will not overflow, ensuring that the concentration of the fire extinguishing agent near the fire source is within a relatively high range, thereby ensuring the fire extinguishing efficiency.

[0028] Example 2

[0029] An active fire extinguishing fabric, the structure of which is shown in FIG. Figure 5 As shown, it is composed of organic hollow fibers 11 filled with fire extinguishing agent, organic fiber yarns 13, inorganic fiber yarns 12 and fire retardant coatings 14.

[0030] The fireproof coating 14 is aluminum foil.

[0031] The outer shell 1 of the organic hollow fiber is made of silica gel, and the cavity shape is circular (Dongguan Tiansheng Silica Gel Products Co., Ltd., outer diameter 1.5mm, inner diameter 1mm), and the fire extinguishing agent 2 filled is 2-bromo-3,3,3-trifluoropropylene (2-btp). A small fluid pump is used to load 2-btp into the silica gel hollow fiber. The sealing glue 3 at both ends of the hollow fiber is AB glue to encapsulate the hollow fiber ( Figure 3 ).

[0032] The organic fiber yarn 13 is made of 200TEX pre-oxidized silk fiber yarn, and the inorganic fiber yarn 12 is made of 600TEX alumina fiber yarn.

[0033] Organic hollow fibers and fiber yarns are woven using shuttle weaving methods ( Figure 4 ), inorganic fiber yarn 12 is used as part of the warp and part of the weft, organic hollow fiber is used as part of the warp, organic fiber yarn 13 is used as part of the weft, the ratio of warp to weft is 1.2:1, in the fabric, the ratio of organic hollow fiber, organic fiber yarn 13 and inorganic fiber yarn 12 is 20:10:70, and the fabric density is 36*25 / inch. After manufacturing, the fabric is compounded with the aluminum foil layer by bonding to form a temperature-resistant fireproof coating 14 on one side of the fabric.

[0034] In the fire-fighting application process of the above-mentioned active fire-extinguishing fabric, although each organic hollow fiber 11 filled with fire extinguishing agent is independent, when the fabric encounters an open flame or is in a high temperature state (temperature is higher than 250 degrees), the fire extinguishing agent 2 will be rapidly sprayed out within 10 seconds due to the expansion of the fire extinguishing agent 2 or the hollow fiber wall being burned and damaged by high temperature, and the fire extinguishing agent 2 in the entire hollow fiber will be sprayed out under high temperature conditions. After being sprayed out, the fire extinguishing agent 2 will be directly applied to the ignition point. Since the fire extinguishing agent 2 evaporates and absorbs a large amount of heat and quickly turns into gas, the fire extinguishing agent 2 will be directly sprayed out by the thermocouple. The temperature of the fire extinguishing area was detected online, and it was found that the temperature nearby could be reduced by about 150 degrees Celsius within 5 seconds after the fire extinguishing agent 2 was completely sprayed out; a portable gas measuring instrument was used to quickly sample and analyze the gas composition near the ignition point, and it was found that the oxygen content near the ignition point was reduced by 33% 5 seconds after the fire extinguishing agent 2 was completely sprayed out, thereby achieving the purpose of rapid fire extinguishing; and under the action of the dense fire-retardant coating 14, most of the fire extinguishing agent gas will not overflow, ensuring that the concentration of the fire extinguishing agent near the fire source is within a higher range, thereby ensuring the fire extinguishing efficiency.

[0035] Example 3

[0036] An active fire extinguishing fabric, the structure of which is shown in FIG. Figure 5 As shown, it is composed of organic hollow fibers 11 filled with fire extinguishing agent, organic fiber yarns 13, inorganic fiber yarns 12 and fire retardant coatings 14.

[0037] The fireproof coating 14 is aluminum foil.

[0038] The shell 1 of the organic hollow fiber is made of silica gel, and the shape of the cavity is circular (Dongguan Tiansheng Silicone Products Co., Ltd., outer diameter 1.8mm, inner diameter 1mm). The fire extinguishing agent 2 filled is perfluorohexanone. A small fluid pump is used to load perfluorohexanone into the silica gel hollow fiber. The sealing glue 3 at both ends of the hollow fiber is UV-curable glue to encapsulate the hollow fiber ( Figure 3 ).

[0039] The organic fiber yarn 13 is made of 300TEX aramid fiber yarn, and the inorganic fiber yarn 12 is made of 500TEX silicon carbide fiber yarn.

[0040] Organic hollow fibers and fiber yarns are woven using shuttle weaving methods ( Figure 4 ), the inorganic fiber yarn 12 is used as part of the warp and part of the weft, the organic hollow fiber is used as part of the warp, and the organic fiber yarn 13 is used as part of the weft, the ratio of the warp to the weft is 1.6:1, in the fabric, the ratio of the organic hollow fiber, the organic fiber yarn 13 and the inorganic fiber yarn 12 is 25:20:55, and the fabric density is 40*35 / inch. After the manufacturing is completed, the fabric is compounded with the aluminum foil layer by bonding to form a temperature-resistant fireproof coating 14 on one side of the fabric.

[0041] During the fire-fighting application of the above-mentioned active fire-extinguishing fabric, although each organic hollow fiber 11 filled with fire extinguishing agent is independent, when the fabric encounters an open flame or is in a high temperature state (temperature is higher than 250 degrees), the fire extinguishing agent 2 will expand due to heat or the hollow fiber wall will be burned and damaged by high temperature, and the fire extinguishing agent 2 inside will be quickly sprayed out within 10 seconds, and the fire extinguishing agent 2 in the entire hollow fiber will be sprayed out under high temperature conditions. After the fire extinguishing agent 2 is sprayed out, it will be directly applied to the ignition point. Since the fire extinguishing agent 2 evaporates and absorbs a large amount of heat and quickly turns into gas, the temperature and oxygen content of the ignition point are measured by thermocouples and portable gas measuring instruments. It is found that within 5 seconds after the fire extinguishing agent is completely sprayed out, the temperature near the ignition point can be reduced by about 180 degrees Celsius, and the oxygen content is reduced by 27%, thereby achieving the purpose of rapid fire extinguishing, thereby ensuring the fire extinguishing efficiency.

[0042] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active fire extinguishing fabric, characterized in that: It includes organic hollow fibers filled with fire extinguishing agent, fiber yarns and fireproof coatings. The organic hollow fibers filled with fire extinguishing agent and fiber yarns are combined into fabrics by weaving, and the prepared fabrics are combined with the fireproof coatings to obtain active fire extinguishing fabrics.

2. An active fire extinguishing fabric according to claim 1, characterized in that: The organic hollow fiber is made of polyolefin or silica gel.

3. An active fire extinguishing fabric according to claim 2, characterized in that: The polyolefin is selected from polyethylene or polypropylene.

4. The active fire extinguishing fabric according to claim 1, characterized in that: The cavity shapes of organic hollow fibers include circle, triangle, and star.

5. The active fire extinguishing fabric according to claim 1, characterized in that: The fire extinguishing agent is selected from one or more of perfluorohexanone, 2-bromo-3,3,3-trifluoropropylene, pentafluoroethane, and heptafluoropropane.

6. The active fire extinguishing fabric according to claim 1, characterized in that: The fiber yarn is selected from organic fiber yarn and / or inorganic fiber yarn; the organic fiber yarn is selected from one or more of aramid fiber yarn, acrylic fiber yarn, polyimide fiber yarn, flame-retardant cotton fiber, and pre-oxidized silk fiber yarn.

7. An active fire extinguishing fabric according to claim 6, characterized in that: The inorganic fiber yarn is selected from one or more of carbon fiber yarn, glass fiber yarn, ceramic fiber yarn, basalt fiber yarn, silicon carbide fiber yarn, and alumina fiber yarn.

8. The active fire extinguishing fabric according to claim 1, characterized in that: The fire extinguishing agent is filled in the organic hollow fiber and then sealed. The organic hollow fiber is sealed by using one of AB glue, hot melt glue and ultraviolet curing glue.

9. The active fire extinguishing fabric according to claim 1, characterized in that: The weaving is selected from one of shuttle weaving, shuttleless weaving, multi-phase weaving, three-dimensional weaving and special weaving.

10. The active fire extinguishing fabric according to claim 1, characterized in that: The fireproof coating is made of silicone or aluminum foil.

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