A fireman's fire-fighting protective suit

Abstract

The present invention provides a fire-fighting protective clothing for firefighters, comprising: an outer fabric and a comfort fabric; wherein, the outer fabric is a double-layer tissue woven fabric, including a fabric surface layer and a fabric inner layer; the thermal protection performance after the combination of the outer fabric and the comfort fabric is greater than or equal to 28 cal / cm<supgt;2< / supgt;. The fire-fighting protective clothing for firefighters of the present invention can effectively reduce the combined weight of the protective clothing, has high heat insulation efficiency, and can also meet the requirements of easy operability, moisture permeability, and individual safety protection in high-temperature environments.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile and clothing, and particularly relates to a fire-fighting protective suit for firefighters. Background Art

[0002] Fire-fighting protective suits for firefighters are important personal protective equipment for firefighters to protect their trunks, limbs, and heads during fire-fighting and rescue operations. In order to standardize the performance requirements of fire-fighting protective suits for firefighters, various countries have put forward performance standards for protective suits. Among them, the fire-fighting protective suits for firefighters in China's standard adopt the industry standard GA10 "Fire-fighting Protective Suits for Firefighters", which stipulates a standard four-layer fabric combination structure, namely an outer layer, a heat-insulating layer, a waterproof and breathable layer, and a comfort layer. Such a thermal protective suit containing a four-layer fabric combination structure can provide sufficient thermal protection, but is relatively heavy. For example, a relatively bulky clothing has poor stretchability, which not only makes the wearer fatigued, but also poses a risk of heat stroke when wearing the clothing in a high-temperature environment in summer. In addition, for firefighters, they often sweat profusely due to the heat of the environment they are in and the efforts they put in when performing their fire-fighting duties. The sweat is usually absorbed by the inner layer so that the firefighters can stay dry. If a large amount of sweat is absorbed into the inner layer, the weight of the already relatively heavy clothing may increase significantly. In addition, these absorbed sweats may affect the breathability and thermal comfort of the thermal protective clothing. In order to maintain the thermal comfort of the thermal protective clothing, the clothing combination structure must be able to allow water vapor, such as the vapor of sweat, to pass through it at an appropriate level, that is, have good moisture permeability.

[0003] Therefore, an ideal fire-fighting protective suit for summer is to develop a thermal protective suit combination with high heat-insulating efficiency using the lightest possible combination of fabrics to reduce the weight of the clothing combination, increase the operability and moisture permeability, and meet the requirements for personal safety protection in a high-temperature environment. Summary of the Invention

[0004] Based on the above problems, the purpose of the present invention is to provide a fire-fighting protective suit for firefighters.

[0005] To achieve the above purpose and other related purposes, in the first aspect of the present invention, a fire-fighting protective suit for firefighters is provided. The protective suit includes: an outer fabric and a comfort fabric; wherein, the outer fabric is a double-layer fabric structure weaving method fabric, including a fabric surface layer and a fabric inner layer; the thermal protection performance after the combination of the outer fabric and the comfort fabric is greater than or equal to 28 cal / cm2.

[0006] In some embodiments of the first aspect of the present invention, the fabric surface layer and the fabric inner layer form an interweaving area and a non-interweaving area in the double-layer fabric structure weaving method fabric. After the fabric inner layer and the fabric surface layer are subjected to a predetermined treatment, protrusions are formed in the non-interweaving area.

[0007] In certain embodiments of the first aspect of the present invention, after the inner layer of the fabric and the outer layer of the fabric are subjected to water washing and high-temperature setting, protrusions are formed in the non-interwoven areas.

[0008] In certain embodiments of the first aspect of the present invention, the warp and weft yarns of the outer layer of the fabric are elastic yarns, and the warp and weft yarns of the inner layer of the fabric are non-elastic yarns.

[0009] In certain embodiments of the first aspect of the present invention, the warp and weft yarns of the outer layer of the fabric are flame-retardant yarns, and the warp and weft yarns of the inner layer of the fabric are para-aramid yarns.

[0010] In certain embodiments of the first aspect of the present invention, the flame-retardant yarn is formed by twisting a flame-retardant carbonized yarn and an elastic spandex filament, and the yarn count of the flame-retardant yarn is Ne: 50 / 2 - Ne: 36 / 2; the yarn count of the inner layer of the fabric is 100D - 600D.

[0011] In certain embodiments of the first aspect of the present invention, the gram weight per square meter of the outer layer of the fabric is 250 - 350 g / m2.

[0012] In certain embodiments of the first aspect of the present invention, the comfort layer fabric is a single-layer fabric or a double-layer fabric.

[0013] In certain embodiments of the first aspect of the present invention, when the inner layer of the fabric and the outer layer of the fabric are exposed to fire and / or high temperature, protrusions are formed in the non-interwoven areas of the inner layer of the fabric and the outer layer of the fabric.

[0014] In certain embodiments of the first aspect of the present invention, the warp and weft yarns of the outer layer of the fabric are aramid fiber yarns, and the warp and weft yarns of the inner layer of the fabric are para-aramid yarns.

[0015] In certain embodiments of the first aspect of the present invention, the gram weight per square meter of the outer layer of the fabric is 200 - 250 g / m2.

[0016] In certain embodiments of the first aspect of the present invention, the comfort layer fabric is a double-layer fabric.

[0017] In certain embodiments of the first aspect of the present invention, the height of the protrusion is greater than or equal to 1 mm.

[0018] In certain embodiments of the first aspect of the present invention, the area of a single non-interwoven area formed by the outer layer of the fabric and the inner layer of the fabric is not less than 0.25 cm2; the shape of the non-interwoven area is a symmetric graphic structure.

[0019] In certain embodiments of the first aspect of the present invention, the protective clothing further includes: a PTFE film layer located between the outer layer of the fabric and the comfort layer fabric.

[0020] Compared with the prior art, a fire-fighting protective suit of the present invention has the following beneficial effects:

[0021] A fire-fighting protective suit of the present invention can effectively reduce the combined weight of the protective suit, has high heat insulation efficiency, and can also meet the requirements of easy operability, moisture permeability, and individual safety protection in high-temperature environments; it not only meets the protective function requirements of the fire-fighting protective suit for firefighters, but also is lighter, thinner, and more flexible, can effectively save the physical strength of firefighters, and enhance the continuous combat ability; in hot and humid situations, the comfort performance of the protective suit is better, enhancing the continuous combat of firefighters. The overall structure of the protective suit is simple, highly practical, and suitable for fire-fighting and rescue operations in hot summer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an implementation manner of the fire-fighting protective suit of the present invention;

[0023] Figure 2 is a schematic cross-sectional view of the outer fabric in an implementation manner of the fire-fighting protective suit of the present invention;

[0024] Figure 3 is a schematic diagram of the shape of the non-interlaced area in the outer fabric of the fire-fighting protective suit of the present invention;

[0025] Figure 4 is a schematic structural diagram of another implementation manner of the fire-fighting protective suit of the present invention;

[0026] Figure 5 is a schematic cross-sectional structure diagram of the outer fabric in another implementation manner of the fire-fighting protective suit of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification.

[0028] In the following description, reference is made to the accompanying drawings, which describe several embodiments of the present application. It should be understood that other embodiments may also be used, and mechanical composition, structure, electrical, and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is only defined by the claims of the published patent. The terms used herein are only for describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "beneath", "lower part", "above", "upper part", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the drawings and another element or feature.

[0029] Figure 1 The structural schematic diagram of an implementation of the fire-fighting protective clothing of the present invention is shown, as Figure 1 shown. The protective clothing includes: an outer fabric layer 1 and a comfort fabric layer 2; wherein, the outer fabric layer 1 is a double-layer tissue weave fabric, including a fabric surface layer and a fabric inner layer; the combined heat protection performance of the outer fabric layer and the comfort fabric layer is greater than or equal to 28 cal / cm 2 .

[0030] Referring to Figure 2 , in this embodiment, an interweaving area 13 and a non-interweaving area are formed between the fabric surface layer 11 and the fabric inner layer 12 in the double-layer tissue weave fabric. After the fabric surface layer 11 and the fabric inner layer 12 are subjected to a predetermined treatment, protrusions 14 are formed in the non-interweaving area.

[0031] In this embodiment, after the fabric surface layer 11 and the fabric inner layer 12 are subjected to a water washing-high temperature setting treatment, protrusions 14 are formed in the non-interweaving area. Specifically, the warp and weft yarns of the fabric surface layer 11 are elastic yarns, such as elastic flame-retardant yarns, and the flame-retardant yarns can be formed by twisting a flame-retardant carbonized yarn and an elastic spandex yarn. The yarn count of the flame-retardant yarn is Ne: 50 / 2 - Ne: 36 / 2. In a specific embodiment, the best yarn count of this fabric surface layer 1 is Ne: 40 / 2.

[0032] The warp and weft yarns of the fabric inner layer 12 are non-elastic yarns, such as para-aramid yarns with high rigidity; the yarn count of the fabric inner layer 12 is 100D - 600D. In a specific embodiment, the best yarn count of this fabric inner layer 2 is 200D.

[0033] In an embodiment of the present invention, in the fabric tissue cycle, the fabric surface layer 11 and the fabric inner layer 12 are connected by a lower connecting yarn according to a certain rule. The shape of the non-interweaving area of the fabric surface layer 11 and the fabric inner layer 12 is a symmetric graphic structure. In this embodiment, the symmetric graphic structure includes, for example: circles, rhombuses, quadrilaterals, triangles, pentagons, hexagons, etc. Among them, the area of the non-interweaving area is not less than 0.25 cm 2 . As Figure 3 shown, the shape of the non-interweaving area in this embodiment is a circle.

[0034] In this embodiment, by using the fabric composed of the fabric surface layer 11 with warp and weft yarns being flame-retardant elastic yarns and the fabric inner layer 12 with warp and weft yarns being rigid para-aramid yarns, the gram weight per square meter of the fabric ranges from 250 - 350 g / cm 2 , and this kind of fabric represents an elastic protrusion type double-layer fabric. Using this kind of fabric greatly reduces the weight of the fabric.

[0035] In this embodiment, since the surface layer 11 of the fabric is made of elastic yarns and the inner layer 12 of the fabric is made of non-elastic rigid yarns, the yarns of the surface layer 11 of the fabric contract, while the yarns of the inner layer 12 of the fabric do not contract. The yarns of the inner layer 12 of the fabric will form a convex structure 14 according to the shape of the non-interlaced area surface. The convex structure 14 forms a stable air layer structure 15 in the fabric composite structure. Air is the best heat insulation material, so the heat insulation performance is good, that is, the thermal protective performance (Thermal Protective Performance, TPP) is good.

[0036] In specific applications, when using the double-layer structure fabric described above, after being treated by washing-high temperature setting, the yarns of the surface layer 11 of the fabric contract, and the yarns of the inner layer 12 of the fabric do not contract, so that the inner layer 12 of the fabric and the surface layer 11 of the fabric form a convex structure 14 in the non-interlaced area, forming an air layer structure 15. Specifically, in order to make the air layer structure 15 of the convex structure 14 effectively used to prevent high-temperature scalding / burning, the height of the convex structure 12 is not less than 1 mm. Of course, the higher the air layer height of the convex structure 12, the better the effect. This application does not make specific limitations on this height.

[0037] In other embodiments, when the protective clothing using the double-layer structure fabric described above is performing high-temperature operations, it can also be pre-treated by watering, soaking, spraying water, etc. in advance, so as to form a convex structure 14 in the non-interlaced area between the surface layer 11 of the fabric and the inner layer 12 of the fabric, forming an air layer structure 15. In this way, it can be effectively used to prevent being burned by high temperature during high-temperature operations.

[0038] In this embodiment, the comfort fabric layer 2 can be a single-layer fabric or a double-layer fabric. A PTFE film layer is further included between the outer fabric layer and the single-layer / double-layer tissue comfort fabric layer. The PTFE film layer can be arranged at an appropriate position according to actual needs. For example, the PTFE film can be attached to the comfort fabric layer. Of course, the present invention does not limit this. The PTFE film can also be arranged in other ways according to actual needs.

[0039] When the outer fabric layer 1 described above in this embodiment is combined with the single-layer tissue comfort fabric layer to test the heat insulation performance, it can meet the requirement that the GA10 TPP value is greater than 28 cal / cm 2The requirements are as follows. Specifically, the unit weight of the single-layer tissue comfort layer fabric can be 160 g / ㎡. If the outer layer fabric is combined with the double-layer tissue comfort layer fabric to test the heat insulation performance, the TPP thermal protection performance value is better because the thickness of the double-layer tissue structure of the same weight fabric is greater than that of the single-layer structure, and the thickness directly affects the TPP value of the combined thermal protection performance. In this embodiment, the unit weight of the double-layer tissue comfort layer fabric is also 160 g / ㎡. It should be noted that in actual applications, according to requirements, the fabric of the protective clothing can be designed as the composition of the aforementioned double-layer outer layer fabric and the single-layer tissue comfort layer fabric, or designed as the composition of the aforementioned double-layer outer layer fabric and the double-layer tissue comfort layer fabric. The present invention does not limit this.

[0040] Next, in this embodiment, the performance comparison test of the protective clothing with a double-layer outer layer fabric, a single-layer / double-layer comfort layer and a PTFE film layer and the combined structure of the standard four-layer fabric is carried out, and the comparison information is shown in Table 1.

[0041]

[0042]

[0043] Table 1

[0044] Among them, No. A is the name and weight of the combined structure of the standard four-layer fabric; in No. B and C, the weight of a1 outer layer is set to 300 g / ㎡; the weight of b1 comfort layer is 160 g / ㎡, and the PTFE film is actually attached to the comfort layer fabric. The weight of 35 g / ㎡ includes the weight of the film and the weight increased by the glue during lamination. Among them, a1 outer layer refers to the elastic protrusion type double-layer fabric described in this embodiment.

[0045] The test results of the thermal protection performance test are shown in Table 2:

[0046] Serial number <![CDATA[TPP test result range (cal / cm 2 )]]> A 29-32.5 B 28.5-30.5 C 29.5-31.5

[0047] Table 2

[0048] Thermal Protective Performance (TPP) is the heat insulation performance value that evaluates the fabric's ability to cause second-degree burns to the human body. The TPP thermal protection performance tester mainly consists of two parts: a conduction heat source and a radiation heat source. The test process is to place the specimen horizontally and expose it to the combined convective and radiative heat source, and the total heat flux of the exposure is (84 ± 2) kW / m 2 [(2.00 ± 0.05) cal / cm 2-s]. The temperature change of the specimen over time is measured and recorded using a copper calorimetric sensor. By combining the thermal performance parameters of copper, the temperature change is converted into the thermal energy transferred through the specimen, and a heat transfer reaction curve showing the change of thermal energy over time is obtained. It objectively predicts the actual protective effect of the fabric material in use by linking the thermal protection of the fabric with the intuitive feeling of the human skin. Therefore, the TPP value is an important data index for evaluating the thermal protection performance of clothing. The higher the TPP value, the better the thermal protection performance of the fabric.

[0049] From the test data range values, it can be seen that with the two-layer fabric combination scheme of this embodiment, the TPP thermal protection performance can meet the requirements of the thermal protection performance in Standard GA10 (not less than 28 cal / cm 2 ). Moreover, using the two-layer fabric of this embodiment can greatly reduce the weight of the protective clothing while improving the comfort of the protective clothing.

[0050] As Figure 4 shown, a schematic structural diagram of another implementation of the fire-fighting protective clothing of the present invention is shown in the figure. The protective clothing includes: an outer layer fabric 3 and a comfort layer fabric 4; wherein, the outer layer fabric 3 is a double-layer tissue weave fabric, including a fabric surface layer 31 and a fabric inner layer 32; the thermal protection performance after the combination of the outer layer fabric and the comfort layer fabric is greater than or equal to 28 cal / cm 2 .

[0051] Referring to Figure 5 , in this embodiment, the fabric surface layer 31 and the fabric inner layer 32 form an interweaving area and a non-interweaving area in the double-layer tissue weave fabric. After the fabric surface layer 31 and the fabric inner layer 32 undergo a predetermined treatment, protrusions 33 are formed in the non-interweaving area.

[0052] In this embodiment, the warp and weft yarns of the fabric surface layer 31 are both aramid IIIA yarns, and this IIIA yarn contains 93% meta-aramid fibers, 5% para-aramid fibers and 2% antistatic fibers; the warp and weft yarns of the fabric inner layer 32 are para-aramid yarns with strong rigidity.

[0053] When the aramid IIIA yarns of the fabric surface layer 31 encounter fire or high temperature, they have a large shrinkage property, while the para-aramid yarns of the fabric inner layer 32 do not shrink or shrink less when encountering fire. At this time, the yarns of the fabric inner layer 32 will form a protrusion structure 33 according to the shape of the non-interweaving area surface. Specifically, in this embodiment, as Figure 4 shown by the protrusion structure 33, the protrusions form a stable air layer structure 34 in the fabric combination structure. Air is the best heat insulation material, so the heat insulation performance is good, that is, the thermal protection performance (TPP) is good.

[0054] In this embodiment, when the double-layer structure fabric is used as the outer layer of the protective clothing and encounters fire and / or high temperature, the surface layer 31 of the fabric shrinks in the warp and weft directions, while the inner layer 32 of the fabric does not shrink, so as to form a convex structure 33, which constitutes an air layer structure 33 with the surface layer 31 of the fabric. Specifically, the minimum height of the convex is 1 mm. Generally, the higher the height of the convex, the better the protection effect. Since the fabric will automatically form a convex structure 33 when encountering high temperature, this fabric is a heat-induced convex double-layer fabric; in this embodiment, the fabric composed of the surface layer 31 with aramid IIIA yarn in the warp and weft directions and the inner layer 32 with rigid para-aramid yarn in the warp and weft directions is adopted, and the gram weight per square meter of the fabric ranges from 200 to 250 g / ㎡.

[0055] In this embodiment, the comfortable layer fabric 4 is a double-layer fabric. A PTFE film layer is further included between the outer layer fabric and the double-layer comfortable layer fabric. The PTFE film layer can be set at an appropriate position according to actual needs. For example, the PTFE film can be attached to the comfortable layer fabric. Of course, the present invention does not limit this, and the PTFE film can also be set in other ways according to actual needs.

[0056] In this embodiment, when the fabric of the protective clothing adopts the above-mentioned heat-induced convex double-layer fabric as the outer layer fabric, it is not necessary to perform convex shaping on the outer layer fabric in advance. Only the heat-induced convex double-layer fabric and the double-layer comfortable layer fabric need to be directly combined and designed as the fabric of the protective clothing, and the shaping design of the protective clothing is carried out. When the protective clothing using the heat-induced convex double-layer fabric as the outer layer fabric encounters an open fire or high temperature during the protection process, the surface layer of the outer layer fabric of the protective clothing will shrink in the warp and weft directions by itself, and form a convex with the inner layer of the outer layer fabric, forming an air layer for heat insulation protection.

[0057] In this embodiment, a performance comparison test is carried out between the protective clothing with the double-layer fabric combination structure of this embodiment and the protective clothing with the standard four-layer fabric combination structure, and the comparison information is shown in Table 3.

[0058]

[0059] Table 3

[0060] Among them, No. A is the name and gram weight of the standard four-layer fabric combination structure; in No. D, the gram weight of the a2 outer layer is 230 g / ㎡; the gram weight of the b2 comfortable layer is selected as 230 g / ㎡. The PTFE film is actually attached to the comfortable layer fabric, and the gram weight of 35 g / ㎡ includes the film gram weight and the gram weight increased by the glue during lamination. Among them, for the a2 outer layer, the heat-induced convex double-layer fabric provided in this embodiment is used.

[0061] The test results of the thermal protection performance test are shown in Table 4:

[0062] Serial number <![CDATA[TPP test result range (cal / cm 2 )]]> A 29-32.5 D 28.5-30

[0063] Table 4

[0064] Thermal Protective Performance (TPP) is the heat insulation performance value that evaluates the ability of a fabric to cause second-degree burns to the human body. The TPP thermal protective performance tester mainly consists of two parts: a conductive heat source and a radiative heat source. In its test process, the specimen is placed horizontally and exposed to a combined convective and radiative heat source, and the total heat flux of exposure is (84 ± 2) kW / m 2 [(2.00 ± 0.05) cal / cm 2 -s]. A copper calorimetric sensor is used to measure and record the change in the temperature of the specimen over time. Combining the thermal performance parameters of copper, the temperature change is converted into the thermal energy transmitted through the specimen to obtain a heat transfer reaction curve of the thermal energy over time. It objectively predicts the actual protective effect of the fabric material in use by linking the thermal protection of the fabric with the intuitive feeling of the human skin. Therefore, the TPP value is an important data index for evaluating the thermal protection performance of clothing. The higher the TPP value, the better the thermal protection performance of the fabric.

[0065] From the range values of the test data, it can be seen that in this embodiment, the TPP thermal protection performance of the protective clothing containing thermally induced protrusions can meet the requirements of the thermal protection performance in Standard GA10 (not less than 28 cal / cm 2 ).

[0066] In summary, the positive effects of using the protective clothing provided by the present invention compared with the standard four-layer clothing combination structure are as follows:

[0067] (1) The protective clothing combination structure for summer use not only meets the protective function requirements of firefighters' fire-fighting protective clothing, but is also more flexible and easy to operate, can effectively save the physical strength of firefighters, and enhance their continuous combat ability;

[0068] (2) The new protective clothing combination structure for summer use has better air permeability, especially better thermal comfort performance of the clothing under high-temperature conditions, and enhances the continuous combat ability of firefighters.

[0069] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present application. Those of ordinary skill in the art should understand that the present application can still be modified or equivalently replaced to achieve the same technical effect; as long as it meets the usage requirements, it is within the protection scope of the present application.

Claims

1. A fire-fighter's fire-fighting protective clothing, characterized in that, Including: Outer fabric, comfortable fabric; wherein, the outer fabric is a double-layer tissue weave fabric, including a fabric surface layer and a fabric inner layer; the thermal protection performance after the combination of the outer fabric and the comfortable fabric is greater than or equal to 28 cal / cm 2 ; In the double-layer fabric structure, the fabric surface layer and the fabric inner layer form an interwoven area and a non-interwoven area. After the fabric inner layer and the fabric surface layer are subjected to a predetermined treatment, protrusions are formed in the non-interwoven area. After the fabric inner layer and the fabric surface layer are subjected to a water washing-high temperature setting treatment, protrusions are formed in the non-interwoven area. The warp and weft yarns of the fabric surface layer are elastic yarns, and the warp and weft yarns of the fabric inner layer are non-elastic yarns. The warp and weft yarns of the fabric surface layer are flame-retardant yarns, and the warp and weft yarns of the fabric inner layer are para-aramid yarns. The flame-retardant yarn is formed by twisting a flame-retardant carbonized yarn and an elastic spandex filament. The yarn count of the flame-retardant yarn is Ne: 50 / 2 - Ne: 36 / 2. The yarn count of the fabric inner layer is 100D - 600D. The area of a single non-interwoven region formed by the fabric surface layer and the fabric inner layer is not less than 0.25 cm 2 ; The shape of the non-interwoven region is a symmetric graphic structure; It further includes a PTFE film layer located between the outer fabric and the comfort fabric.

2. The fire fighter's fire extinguishing protective clothing according to claim 1, wherein, The gram weight per square meter of the outer fabric is 250 - 350 g / m 2 .

3. The fire-fighter's fire-extinguishing protective clothing according to claim 1, characterized in that, The comfort fabric is a single-layer fabric or a double-layer fabric.

4. The fire-fighter's fire extinguishing protective clothing according to claim 1, characterized in that, The height of the protrusion is greater than or equal to 1 mm.

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