Low-cost efficient flame-retardant heat-insulating fabric, processing technology and clothing product

Abstract

The invention relates to a low-cost efficient flame-retardant heat-insulating fabric, a processing technology and a clothing product. The fabric comprises a selective isolating layer, a connecting layer and a high-specific-surface-area heat dissipation layer which are arranged from inside to outside; the connecting layer is made of a flame-retardant material and is used for connecting the selective isolating layer and the high-specific-surface-area heat dissipation layer; the high-specific-surface-area heat dissipation layer is made of a high-specific-surface-area material and is used for increasing the heat dissipation area and the heat dissipation rate of the surface of the fabric; the selective isolation layer is used for reducing inward diffusion of a certain phase-state substance outside and improving the comfort of the fabric; the advantages of the heat dissipation material with the high specific surface area and the selective isolation layer are combined, the heat dissipation rate of heat can be greatly increased through the heat dissipation layer made of the heat dissipation material with the high specific surface area, and meanwhile, a certain phase state substance generated during evaporation heat dissipation cannot be diffused inwards through the selective inner isolation layer; the flame-retardant and heat-insulating effects are effectively improved, the cost can be low, and the flame-retardant and heat-insulating material is suitable for being widely applied to the field of civil fire protection.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and more specifically to a low-cost and high-efficiency flame-retardant and heat-insulating fabric, a processing technology and a clothing product. Background Art

[0002] In daily fire scenes, the main factors that endanger personal life safety include flames, thick smoke, high-temperature steam, thermal radiation, etc. Among them, the factors that cause the most injuries are high-temperature thermal radiation and steam burns, and the most fatal is smoke poisoning. The existing high-temperature protective fabrics are mostly special fiber fabrics, which are composited with high-cost new functional materials. The protective clothing made of these fabrics is very expensive and is usually only worn by firefighters during rescue operations. This kind of special fabric is difficult to popularize to the general public.

[0003] At the same time, the materials on the market that claim to have protective functions have very limited high-temperature protection functions, especially the slow evaporation rate of water. The previous method of wetting clothes with water and then escaping from the fire will increase the risk of users being burned by high-temperature steam. Based on the above reasons, there is an urgent need for a low-cost and effective fabric suitable for the general public to resist the impact of flames and heat waves during fires and increase the chances of escape and rescue. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a low-cost and high-efficiency flame-retardant and heat-insulating fabric in view of the above-mentioned defects of the prior art, and also provide a low-cost and high-efficiency flame-retardant and heat-insulating fabric processing technology and a clothing product.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] Constructing a low-cost, high-efficiency flame-retardant and heat-insulating fabric, wherein the fabric comprises a selective isolation layer, a connection layer and a high specific surface area heat dissipation layer arranged from the inside to the outside;

[0007] The connecting layer is made of a flame retardant material and is used to connect the selective isolation layer and the high specific surface area heat dissipation layer;

[0008] The high specific surface area heat dissipation layer is made of a high specific surface area material and is used to increase the heat dissipation area and heat dissipation rate of the fabric surface;

[0009] The selective isolation layer is used to reduce the diffusion of a certain phase substance from the outside into the inside and improve the comfort of the fabric.

[0010] The low-cost and high-efficiency flame-retardant and heat-insulating fabric of the present invention, wherein the high specific surface area heat dissipation layer is a water-absorbing layer, and the water-absorbing layer absorbs a water-based flame-retardant and heat-insulating agent.

[0011] The low-cost, high-efficiency, flame-retardant and heat-insulating fabric of the present invention, wherein the selective isolation layer is a waterproof and breathable layer, which is used for allowing air to pass through and isolating liquid water at the same time.

[0012] The low-cost, high-efficiency flame-retardant and heat-insulating fabric described in the present invention, wherein the water-absorbing layer is a superfine fiber fluff layer and is made of polyester material; the connecting layer is made of grey cloth and flame-retardant glue, and the grey cloth is made of flame-retardant yarn.

[0013] The low-cost, high-efficiency, flame-retardant and heat-insulating fabric of the present invention comprises a PTFE waterproof and breathable membrane as the waterproof and breathable layer.

[0014] The low-cost and high-efficiency flame-retardant and heat-insulating fabric of the present invention, wherein the water-based flame-retardant and heat-insulating agent adopts a modified water-based fire extinguishing agent.

[0015] The low-cost, high-efficiency flame-retardant, heat-insulating fabric described in the present invention, wherein the high specific surface area heat dissipation layer is made of heat dissipation fibers formed by dispersing high-efficiency heat dissipation agents in the cavities of porous materials, blending fibers with flame-retardant heat dissipation materials, or composites of nanomaterials and high specific surface area substrates.

[0016] The low-cost, high-efficiency, flame-retardant and heat-insulating fabric of the present invention comprises a PU film or a TPU film as the waterproof and breathable layer.

[0017] A low-cost and high-efficiency flame-retardant and heat-insulating fabric processing process is used to produce the low-cost and high-efficiency flame-retardant and heat-insulating fabric as mentioned above, characterized in that the process comprises the steps of:

[0018] Using flame retardant yarn as raw material, we weave single-sided warp knitted polyester coral fleece, the weight of the finished cloth is not less than 250g / m 2 ;

[0019] Use flame-retardant high-temperature glue to coat the non-fleece surface of coral fleece with a double-layer PTFE waterproof and breathable membrane;

[0020] Use a suitable spraying device / immersion device to spray / impregnate a specially prepared quantitative water-based flame retardant and heat-insulating agent into the fluff.

[0021] A clothing product, wherein the clothing product is made of the low-cost and high-efficiency flame-retardant and heat-insulating fabric as described above.

[0022] The beneficial effect of the present invention is that the present invention combines the respective advantages of the heat dissipation material with a high specific surface area and the selective isolation layer. The heat dissipation layer made of the heat dissipation material with a high specific surface area can greatly increase the heat dissipation rate. At the same time, the selective inner isolation layer prevents a certain phase substance generated during evaporation heat dissipation from diffusing inwardly. While effectively improving the flame retardant and heat insulation effect, the cost can be kept low, and the present invention is suitable for large-scale application in the field of civil fire protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0024] Figure 1 This is a schematic diagram of the structure of a low-cost, high-efficiency, flame-retardant, and heat-insulating fabric according to a preferred embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of a specific implementation structure of a low-cost, high-efficiency, flame-retardant, and heat-insulating fabric according to a preferred embodiment of the present invention;

[0026] Figure 3 It is a process flow chart of low-cost and high-efficiency flame-retardant and heat-insulating fabrics according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0028] The low-cost and high-efficiency flame-retardant and heat-insulating fabric of the preferred embodiment of the present invention is as follows Figure 1 As shown, the fabric includes a selective isolation layer 10, a connection layer 11 and a high specific surface area heat dissipation layer 12 arranged from the inside to the outside;

[0029] The connecting layer 11 is made of a flame retardant material and is used to connect the selective isolation layer 10 and the high specific surface area heat dissipation layer 12;

[0030] The high specific surface area heat dissipation layer 12 is made of a high specific surface area material and is used to increase the heat dissipation area and heat dissipation rate of the fabric surface;

[0031] The selective isolation layer 10 is used to reduce the diffusion of certain phase substances from the outside into the inside and improve the comfort of the fabric;

[0032] The present invention combines the advantages of the heat dissipation material with a high specific surface area and the selective isolation layer. The heat dissipation layer made of the heat dissipation material with a high specific surface area can greatly increase the heat dissipation rate. At the same time, the selective inner isolation layer prevents certain phase substances generated during evaporation heat dissipation from diffusing inwards. While effectively improving the flame retardant and heat insulation effect of the fabric, the cost can be kept low, and the invention is suitable for a large number of applications in the field of civil fire protection.

[0033] It should be noted that, in addition to using ultrafine fibers impregnated with water-based high-efficiency flame retardant and heat-insulating agents, there are many other ways to make high-specific surface area heat dissipation layers: ① Dispersing high-efficiency heat dissipation agents in the cavities of porous materials; ② Blending fibers with flame retardant heat dissipation materials to make heat dissipation fibers; ③ Composite nanomaterials with high-specific surface area substrates, etc.

[0034] Connecting layer: In addition to using warp knitted fabric as a connecting layer to fix fiber fluff, there are many other solutions that can serve as a connecting layer between the heat dissipation layer and the selective isolation layer, as long as the permeability or isolation of the connecting layer material to a specific phase substance meets the overall permeability requirements of the fabric. For example, if the selective isolation layer needs to isolate solid and liquid substances and allow gaseous substances to pass through, the material of the connecting layer can be used as long as it reaches a certain index of air permeability;

[0035] Selective isolation layer: In addition to using PTFE membrane as a waterproof and breathable layer, other materials that can serve as waterproof and breathable membranes include PU, TPU and other previous generations of products. There are many materials that can be used as selective isolation layers, but their functions vary. They are selected based on the different microporous structures and microporous sizes of the materials and the actual needs of the fabric. At the same time, the connecting layer and the selective isolation layer can also be combined into one layer;

[0036] The solutions obtained by equivalent replacement based on the above principles and prior art also fall within the protection scope of this application.

[0037] This application also provides a preferred implementation example, such as Figure 2 The specific instructions are as follows:

[0038] The high specific surface area heat dissipation layer is a water absorption layer 120, which absorbs the flame retardant and heat insulation agent 121, and plays the role of flame retardant and heat insulation in the outermost layer. This layer has the characteristics of high water absorption and high specific surface area. The water absorption layer can fully absorb a sufficient amount of water-based flame retardant and heat insulation agent, and expose more surface in the face of heat waves so that the flame retardant agent can fully play a role and dissipate heat through evaporation effect;

[0039] The connecting layer is an adhesive layer 110, which plays the role of fixing the water-absorbing layer and the lower layer in the middle layer, and is made of a flame-retardant material to prevent the inner and outer layers from falling off due to burning;

[0040] The selective isolation layer is a waterproof and breathable layer 100, which plays the role of isolating liquid water and allowing air to pass through the inner layer. Due to the special microporous structure, the waterproof and breathable material of this layer can only allow gaseous water to pass through while preventing liquid water molecules from passing through, which protects the inner side of the fabric from the invasion of high-temperature liquids, while the heat generated by human body movement inside can also be dissipated outwards;

[0041] Using this embodiment, Figure 3As shown, the process is as follows: first, weave a single-sided warp-knitted polyester coral fleece (preferably, the spinning yarn is flame-retardant yarn, and the weight of the finished cloth is not less than 250g / m 2 ), then use flame retardant high temperature glue to coat double-layer PTFE waterproof breathable membrane on the non-fleece surface, and finally use a suitable spraying device / immersion device to spray / impregnate a special quantitative water-based flame retardant heat-insulating agent into the fluff to obtain a highly efficient flame retardant heat-insulating fabric;

[0042] After testing, the advantages of adopting this embodiment are:

[0043] 1. Excellent thermal insulation performance. In the formula of polyester coral fleece + modified water-based fire extinguishing agent + PTFE waterproof breathable membrane, this flame-retardant fabric can achieve more than 2.14 times the national standard value of the thermal insulation capacity of firefighters' fire protection clothing; (the test standard is "XF 10-2014 Firefighters' Fire Protection Clothing", the test item is 6.1 Overall thermal protection performance, and the TPP standard value requirement for firefighters' protective clothing is 28.0cal / cm 2 The TPP test value of this formula fabric is>60cal / cm 2 );

[0044] 2. Long protection time. Under the formula of polyester coral fleece + modified water-based fire extinguishing agent + PTFE waterproof breathable membrane, in the 260℃ high temperature thermal stability test, the fabric can maintain protection time of more than 7 minutes, which is enough for personnel to escape to a relatively safe space. The actual protection time will be extended accordingly as the temperature of the fire scene decreases, providing a longer protection time;

[0045] 3. Comfortable feeling, with good waterproof and breathable layer, which can dissipate the heat generated by the human body in time, and will not be harmed by the high-temperature liquid in the fire scene, solving the problem of dry fire-proof clothing being too hot and causing physical exhaustion;

[0046] 4. Low cost. Compared with existing flame-retardant and heat-insulating fabrics such as aramid, PBI, PBO, etc., its cost is significantly reduced (the unit cost of the formula fabric of polyester coral fleece + modified water-based fire extinguishing agent + PTFE waterproof and breathable membrane is only 7% of the unit cost of the current firefighter protective clothing fabric), which is suitable for large-scale application in the field of civil fire protection.

[0047] A clothing product, wherein the clothing product is made of the low-cost, high-efficiency flame-retardant and heat-insulating fabric as described above; it can be understood that the clothing product should include not only conventional clothes and pants, but also other items that can be made of this fabric, such as curtains, bed sheets, sunshades, etc., and it can also be the case that this fabric is attached to part of the item. These application scenarios all fall within the scope of application and protection of this application.

[0048] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A low-cost, high-efficiency flame-retardant and heat-insulating fabric, characterized in that: The fabric comprises a selective isolation layer, a connection layer and a high specific surface area heat dissipation layer arranged from the inside to the outside; The connecting layer is made of a flame retardant material and is used to connect the selective isolation layer and the high specific surface area heat dissipation layer; The high specific surface area heat dissipation layer is made of a high specific surface area material and is used to increase the heat dissipation area and heat dissipation rate of the fabric surface; The selective isolation layer is used to reduce the diffusion of a certain phase substance from the outside into the inside and improve the comfort of the fabric.

2. The low-cost and high-efficiency flame-retardant and heat-insulating fabric according to claim 1 is characterized in that: The high specific surface area heat dissipation layer is a water-absorbing layer, and the water-absorbing layer absorbs a water-based flame retardant and heat-insulating agent.

3. The low-cost and high-efficiency flame-retardant and heat-insulating fabric according to claim 2 is characterized in that: The selective isolation layer is a waterproof and breathable layer, which is used for allowing air to pass through and isolating liquid water at the same time.

4. The low-cost and high-efficiency flame-retardant and heat-insulating fabric according to claim 3 is characterized in that: The water-absorbing layer is a superfine fiber fluff layer and is made of polyester material; the connecting layer is made of grey cloth and flame-retardant glue, and the grey cloth is made of flame-retardant yarn.

5. The low-cost and high-efficiency flame-retardant and heat-insulating fabric according to claim 4 is characterized in that: The waterproof and breathable layer adopts a PTFE waterproof and breathable membrane.

6. The low-cost and high-efficiency flame-retardant thermal insulation fabric according to claim 5 is characterized in that: The water-based flame retardant and heat insulating agent adopts a modified water-based fire extinguishing agent.

7. The low-cost and high-efficiency flame-retardant and heat-insulating fabric according to claim 1 is characterized in that: The high specific surface area heat dissipation layer adopts heat dissipation fibers made by dispersing high-efficiency heat dissipation agents in the cavities of porous materials, blending fibers with flame-retardant heat dissipation materials, or composite nanomaterials with high specific surface area substrates.

8. The low-cost and high-efficiency flame-retardant and heat-insulating fabric according to claim 4 is characterized in that: The waterproof and breathable layer is made of PU film or TPU film.

9. A low-cost and high-efficiency flame-retardant and heat-insulating fabric processing technology, characterized in that: The process comprises the steps of: Using flame-retardant yarn as raw material, we weave single-sided warp-knitted polyester coral fleece; Use flame-retardant high-temperature glue to coat the non-fleece surface of coral fleece with a double-layer PTFE waterproof and breathable membrane; Use a spraying device / immersion device to spray / impregnate a specially prepared quantitative water-based flame retardant and heat insulating agent into the fluff.

10. A clothing product, characterized in that: The clothing product is made of the low-cost, high-efficiency flame-retardant and heat-insulating fabric as described in any one of claims 1-8.

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