Fireproof sound-absorbing woven fabric and preparation method thereof

Abstract

The invention discloses a fireproof sound-absorbing woven fabric and a preparation method thereof, and relates to the technical field of woven fabrics, the fireproof sound-absorbing woven fabric comprises a surface layer, the surface layer is of a latticed structure formed by interweaving warps and wefts, and the warps and the wefts are obtained by weaving modified carbon fibers, acrylic fibers, mulberry silk fibers and kapok fibers through mixed spinning. According to the fireproof sound-absorbing woven fabric and the preparation method thereof, the carbon fibers are soaked in the graphene oxide suspension solution, so that graphene oxide can be adsorbed on the surfaces of the carbon fibers, the lamellar structure of the carbon fibers can prevent microcracks in the carbon fibers from expanding to a certain extent, the reinforcing effect is achieved, meanwhile, in the subsequent treatment process, other substances are combined with the carbon fibers, and the fireproof sound-absorbing effect is achieved. The structure of the fabric is further consolidated, so that the overall mechanical property of the fabric is improved; and the carbon fibers have relatively high thermal stability, and after modification treatment, the graphene oxide can form a layer of protective film on the surfaces of the carbon fibers, so that the high-temperature resistance of the carbon fibers is improved.

Description

Technical Field

[0001] The invention relates to the technical field of woven fabrics, in particular to a fireproof and sound-absorbing woven fabric and a preparation method thereof. Background Art

[0002] Referring to a Chinese patent for a curtain fabric (publication number: CN108116014A), the invention comprises a main fabric body. Its innovation lies in the following: the main fabric body is woven from warp and weft yarns, with a transparent layer sewn onto the upper surface of the main fabric body and a uniform ribbed weave pattern. The warp yarns are 50D acrylic filaments, and the weft yarns are 68D polyester textured yarns. The main fabric body is also provided with several rows of mesh structures. This curtain fabric of the present invention has a soft and smooth feel, a pure color, strong fastness, and a rich and delicate feel. The invention incorporates several rows of heart-shaped or oval-shaped mesh structures within the main fabric body. When the curtain is drawn and the door is opened, air enters the room through the gaps, providing ventilation while preventing the curtain from fluttering. At the same time, some light enters the room through the gaps, meeting the lighting needs of the room. However, the fabrics produced by the above-mentioned prior art suffer from poor fire resistance during use. Therefore, the present invention proposes a fire-resistant and sound-absorbing woven fabric and its preparation method to address these issues. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the present invention provides a fireproof and sound-absorbing woven fabric and a preparation method thereof, which solves the problems mentioned in the above background technology.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fireproof and sound-absorbing woven fabric, comprising a surface layer, wherein the surface layer is woven into a grid structure by warp and weft threads, wherein the warp and weft threads are obtained by mixed spinning and weaving of modified carbon fiber, acrylic fiber, mulberry silk fiber and kapok fiber;

[0007] Wherein, the weight proportions of the modified carbon fiber, acrylic fiber, mulberry silk fiber and kapok fiber are 2-5 parts, 20-35 parts, 5-8 parts and 40-55 parts.

[0008] Preferably, the preparation method of the modified carbon fiber is:

[0009] S1. Pre-treating carbon fiber;

[0010] S2. Soak the pretreated carbon fiber in a 3.0 mg / mL graphene oxide suspension solution, then take it out, wash the carbon fiber with deionized water 3-4 times, and then dry it in a drying oven at 60-70°C for 1.5-2 hours;

[0011] S3. Immerse the dried carbon fiber in the mixed solution in S2, then take it out and wash it 3 - 4 times with deionized water;

[0012] S4. Slowly add 20 - 26 g of sodium hydroxide solution dropwise to 3.2 - 4.5 g of zinc sulfate. After the reaction is completed, filter the solution, wash the solid, and dry it in a vacuum dryer at 70 - 80 °C for 6 - 8 h;

[0013] S5. Under normal temperature conditions, stir and mix 5 - 8 g of the solid in S4, 80 - 90 mL of sodium hydroxide solution, and 100 - 115 mL of the mixed solution for 20 - 30 min. Then immerse the carbon fiber treated in S3 in it, raise the temperature to 85 - 95 °C, react for 8 - 10 h, then cool to normal temperature, take it out, wash it 3 - 4 times with deionized water, and then dry it in a freeze dryer for 2 - 3 h;

[0014] S6. Finally, under room temperature conditions, immerse it in a 0.1 mg / mL phospholipid - polyethylene glycol - amino solution for 2.5 - 3 h, then wash it 2 - 4 times with deionized water, and then dry it in a vacuum drying oven at 55 - 65 °C for 2.5 - 3 h to obtain the modified carbon fiber.

[0015] Preferably, in S1, the specific pretreatment method of the carbon fiber is:

[0016] (1) Immerse the carbon fiber in an acetone solution, raise the temperature to 75 - 85 °C, carry out condensation reflux for 66 - 72 h, then wash it with ethanol and deionized water, and then dry it in a drying oven at 70 - 80 °C for 1.5 - 2.5 h;

[0017] (2) Immerse the carbon fiber dried in (1) in a mixed solution of 120 - 150 mL of ethylene glycol solution and 6.5 - 9 mL of ammonia water for 25 - 40 min, then raise the temperature to 160 - 180 °C and react at this temperature for 10 - 12 h;

[0018] (3) After the reaction is completed, cool to normal temperature, take it out and wash it alternately with ethanol and deionized water 3 - 5 times, and then dry it in a drying oven at 55 - 65 °C for 2.5 - 3 h.

[0019] Preferably, in S2, adjust the pH value of the graphene oxide suspension to 8 - 9 with ammonium hydroxide, and the soaking time is 5 - 6 h.

[0020] Preferably, in S3, the specific soaking method is as follows: Under normal temperature conditions, first place the dried carbon fiber in S2 into the mixed solution, soak it while stirring for 45 - 60 min, then let it stand for 50 - 70 min, and then add 0.002 mol / L sodium hydroxide solution to adjust the pH value of the system to 7 - 8, and continue to soak for 1.5 - 2 h.

[0021] Preferably, in S4, the concentration of zinc sulfate is 2 mol / L, and the concentration of sodium hydroxide solution is 4 mol / L.

[0022] Preferably, the preparation method of the mixed solution in S3 and S5 is as follows: Pour 2 - 2.6 g of zinc acetate dihydrate into 200 mL of methanol, and after complete dissolution, the mixed solution is obtained.

[0023] A preparation method of a fire - proof and sound - absorbing woven fabric specifically includes the following preparation steps:

[0024] Step 1: Use the modified carbon fiber as the first warp yarn and acrylic fiber as the first weft yarn, and weave the first warp yarn and the first weft yarn to obtain the first woven fabric;

[0025] Step 2: Use mulberry silk fiber as the second warp yarn and kapok fiber as the second weft yarn, and weave the second warp yarn and the second weft yarn to obtain the second woven fabric;

[0026] Step 3: Bond the second woven fabric to the inner side of the first woven fabric to obtain the fire - proof and sound - absorbing woven fabric.

[0027] (III) Beneficial effects

[0028] The present invention provides a fire - proof and sound - absorbing woven fabric and its preparation method. Compared with the prior art, it has the following beneficial effects:

[0029] (1) For this fire - proof and sound - absorbing woven fabric and its preparation method, by soaking the carbon fiber in the graphene oxide suspension solution, graphene oxide can be adsorbed on its surface, and its sheet structure can, to a certain extent, prevent the expansion of micro - cracks inside the carbon fiber, playing a strengthening role. At the same time, in the subsequent treatment process, other substances combine with the carbon fiber, further consolidating its structure, and improving the overall mechanical properties of the fabric; and the carbon fiber itself has high thermal stability. After modification, graphene oxide can form a protective film on the surface of the carbon fiber, improving its high - temperature resistance. At the same time, substances such as zinc acetate dihydrate and the subsequently added zinc sulfate will undergo endothermic reactions at high temperatures, absorbing some heat, delaying the temperature rise of the fabric, improving its thermal stability, and zinc compounds will decompose at high temperatures to produce some substances with combustion - inhibiting effects, improving the fire - proof performance of the fabric;

[0030] By soaking in the mixed solution, zinc ions can be loaded onto the surface of carbon fibers, which can bind to groups such as sulfhydryl groups in bacterial cells, interfere with the metabolic process of bacteria, and destroy the cell membrane structure of bacteria, thereby achieving the purpose of antibacterial; components such as phospholipids and polyethylene glycol in the phospholipid-polyethylene glycol-amine solution have good hydrophilicity and biocompatibility, forming a protective film on the surface of carbon fibers, reducing the surface roughness and irritation of carbon fibers, and reducing adverse reactions such as allergies and irritation during use.

[0031] (2) For the fireproof and sound-absorbing woven fabric and its preparation method, the graphene oxide in the modified carbon fiber has a unique two-dimensional structure and a large specific surface area, which can increase the scattering and reflection of sound inside the fabric, so that the sound energy is continuously consumed during multiple reflections and scatterings, thereby improving the sound absorption ability of the fabric. And when sound enters the fabric, it will continuously zigzag through the network structure composed of carbon fibers, graphene oxide and other modified substances, extending the propagation distance of sound in the fabric, and gradually attenuating the sound energy during propagation, thus playing a role in sound absorption; at the same time, the coating formed after impregnation with the phospholipid-polyethylene glycol-amine solution also has a sound-absorbing effect, and its molecular structure can have a good absorption effect on sounds of specific frequencies. Description of the Drawings

[0032] Figure 1 SEM images of the carbon fiber before and after modification provided by the present invention. Detailed Embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In this application, the carbon fiber is specifically a T300-PAN-based carbon fiber.

[0035] The specific pretreatment method of the carbon fiber is as follows: Immerse the carbon fiber in an acetone solution, heat it to 80°C, and carry out condenser reflux for 72h, then wash it with ethanol and deionized water, and then dry it in a drying oven at 70°C for 2h; Place the dried carbon fiber in a mixed solution of 150 mL of ethylene glycol solution and 9 mL of ammonia water and soak for 40 min, then heat it to 180°C and react at this temperature for 12 h; After the reaction is completed, cool it to room temperature, take it out and wash it alternately with ethanol and deionized water 5 times, and then dry it in a drying oven at 65°C for 3h.

[0036] Adjust the pH value of the graphene oxide suspension solution with ammonium hydroxide.

[0037] The preparation method of the mixed solution is as follows: Pour 2.2 g of zinc acetate dihydrate into 200 mL of methanol. After complete dissolution, the mixed solution is obtained.

[0038] Example 1

[0039] A preparation method of a fireproof and sound-absorbing woven fabric specifically includes the following preparation steps:

[0040] (1) Immerse the pretreated carbon fiber in a graphene oxide suspension solution with a pH of 8 and a concentration of 3.0 mg / mL for 5 h, then take it out, wash the carbon fiber 3 times with deionized water, and then place it in a drying oven at 60 °C for drying for 1.5 h; then under normal temperature conditions, first place the dried carbon fiber in the mixed solution, soak it while stirring for 45 min, then let it stand for 50 min, and then add 0.002 mol / L sodium hydroxide solution to adjust the pH value of the system to 7, and continue to soak for 1.5 h; slowly add 20 g of 4 mol / L sodium hydroxide solution to 3.2 g of 2 mol / L zinc sulfate. After the reaction is completed, filter the solution, wash the solid, and place it in a vacuum dryer at 70 °C for drying for 6 h; under normal temperature conditions, stir and mix 5 g of the dried solid, 80 mL of sodium hydroxide solution, and 100 mL of the mixed solution for 20 min, then place the carbon fiber soaked in the mixed solution into it and soak it, and heat it up to 85 °C, react for 8 h, then cool it to normal temperature, take it out, wash it 3 times with deionized water, and then place it in a freeze dryer for drying for 2 h; finally, under room temperature conditions, immerse it in a 0.1 mg / mL phospholipid-polyethylene glycol-amine solution for 2.5 h, then wash it 2 times with deionized water, and then place it in a vacuum drying oven at 55 °C for drying for 2.5 h to obtain the modified carbon fiber;

[0041] (2) Use 2 g of the modified carbon fiber as the first warp yarn and 20 g of acrylic fiber as the first weft yarn, and weave the first warp yarn and the first weft yarn to obtain the first woven fabric; use 5 g of mulberry silk fiber as the second warp yarn and 40 g of kapok fiber as the second weft yarn, and weave the second warp yarn and the second weft yarn to obtain the second woven fabric; bond the second woven fabric to the inner side of the first woven fabric to obtain the fireproof and sound-absorbing woven fabric.

[0042] Example 2

[0043] A preparation method of a fireproof and sound-absorbing woven fabric specifically includes the following preparation steps:

[0044] (1) Immerse the pretreated carbon fiber in a graphene oxide suspension solution with a pH of 8.5 and a concentration of 3.0 mg / mL for 5.5 h, then take it out, wash the carbon fiber 4 times with deionized water, and then place it in a drying oven at 65 °C for 1.8 h; then under normal temperature conditions, first place the dried carbon fiber in the mixed solution and soak it while stirring for 50 min, then let it stand for 60 min, and then add 0.002 mol / L sodium hydroxide solution to adjust the pH value of the system to 7.5 and continue to soak for 1.8 h; slowly add 23 g of 4 mol / L sodium hydroxide solution to 4 g of 2 mol / L zinc sulfate, after the reaction is completed, filter the solution, wash the solid and place it in a vacuum dryer at 75 °C for 7 h; under normal temperature conditions, stir and mix 6 g of the dried solid, 85 mL of sodium hydroxide solution, and 110 mL of the mixed solution for 25 min, then place the carbon fiber soaked in the mixed solution into it and soak, heat up to 90 °C, react for 9 h, then cool to normal temperature, take it out, wash it 3 times with deionized water, and then place it in a freeze dryer for 2.5 h; finally, under room temperature conditions, immerse it in a 0.1 mg / mL phospholipid-polyethylene glycol-amine solution for 2.8 h, then wash it 3 times with deionized water, and then place it in a vacuum drying oven at 60 °C for 2.7 h to obtain the modified carbon fiber;

[0045] (2) Use 3.5 g of the modified carbon fiber as the first warp yarn and 28 g of acrylic fiber as the first weft yarn, and weave the first warp yarn and the first weft yarn to obtain the first woven fabric; use 6 g of mulberry silk fiber as the second warp yarn and 50 g of kapok fiber as the second weft yarn, and weave the second warp yarn and the second weft yarn to obtain the second woven fabric; bond the second woven fabric to the inner side of the first woven fabric to obtain the fireproof and sound-absorbing woven fabric.

[0046] Example 3

[0047] A preparation method of a fireproof and sound-absorbing woven fabric specifically includes the following preparation steps:

[0048] (1) Immerse the pretreated carbon fiber in a graphene oxide suspension solution with a pH of 9 and a concentration of 3.0 mg / mL for 6 h, then take it out, wash the carbon fiber 4 times with deionized water, and then dry it in a drying oven at 70 °C for 2 h; then under normal temperature conditions, first place the dried carbon fiber in the mixed solution, stir and immerse it for 60 min, then let it stand for 70 min, and then add 0.002 mol / L sodium hydroxide solution to adjust the pH value of the system to 8, and continue to immerse it for 2 h; slowly add 26 g of 4 mol / L sodium hydroxide solution to 4.5 g of 2 mol / L zinc sulfate, and after the reaction is completed, filter the solution, wash the solid, and dry it in a vacuum dryer at 80 °C for 8 h; under normal temperature conditions, stir and mix 8 g of the dried solid, 90 mL of sodium hydroxide solution, and 115 mL of the mixed solution for 30 min, then place the carbon fiber immersed in the mixed solution into it and soak, heat up to 95 °C, react for 10 h, then cool to normal temperature, take it out, wash it 4 times with deionized water, and then dry it in a freeze dryer for 3 h; finally, under room temperature conditions, immerse it in a 0.1 mg / mL phospholipid-polyethylene glycol-amine solution for 3 h, wash it 4 times with deionized water, and then dry it in a vacuum drying oven at 65 °C for 3 h to obtain the modified carbon fiber;

[0049] (2) Use 5 g of the modified carbon fiber as the first warp yarn and 35 g of acrylic fiber as the first weft yarn, and weave the first warp yarn and the first weft yarn to obtain the first woven fabric; use 8 g of mulberry silk fiber as the second warp yarn and 55 g of kapok fiber as the second weft yarn, and weave the second warp yarn and the second weft yarn to obtain the second woven fabric; bond the second woven fabric to the inner side of the first woven fabric to obtain the fireproof and sound-absorbing woven fabric.

[0050] Comparative Example 1

[0051] Compared with Example 1, the difference is that the modified carbon fiber is replaced with carbon fiber; the rest remains unchanged.

[0052] Limiting oxygen index test (LOI) test: Conduct the test according to ASTM D2863, and the specimen size is 150 mm x 6 mm x 3 mm; the results are shown in Table 1.

[0053] Vertical burning rating test (UL-94): Conduct the test according to ASTM D3801, and the specimen size is 127 mm x 12.5 mm x 3 mm; the results are shown in Table 1.

[0054] Sound absorption performance test: Conduct the test according to GB / T 20247-2006, and the specimen size is 120 mm x 5 mm x 3 mm; the results are shown in Table 1.

[0055] Tensile property test: The test was carried out in accordance with GB / T 3923.2-2013, and the specimen size was 80mm x 10mm x 3mm; the results are shown in Table 1.

[0056] Table 1

[0057]

[0058] As Figure 1 shown, the surface of the unmodified carbon fiber is smooth with many grooves along the fiber axis direction, while there are acicular substances growing in-situ on the surface of the modified carbon fiber.

[0059] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0060] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fireproof and sound-absorbing woven fabric, including a surface layer, characterized in that: The surface layer is woven into a grid-like structure by warp and weft threads, and the warp and weft threads are obtained by mixing and spinning modified carbon fiber, acrylic fiber, mulberry silk fiber and kapok fiber; Among them, the weight parts of the modified carbon fiber, acrylic fiber, mulberry silk fiber and kapok fiber are 2-5 parts, 20-35 parts, 5-8 parts, and 40-55 parts.

2. The fireproof and sound-absorbing woven fabric according to claim 1, characterized in that: The preparation method of the modified carbon fiber is as follows: S1. Pretreat the carbon fiber; S2. Immerse the pretreated carbon fiber in a graphene oxide suspension solution with a concentration of 3.0 mg / mL, then take it out, wash the carbon fiber with deionized water 3-4 times, and then place it in a drying oven at 60-70 °C for drying for 1.5-2 h; S3. Immerse the carbon fiber dried in S2 in the mixed solution, then take it out and wash it with deionized water 3-4 times; S4. Slowly drop 20-26 g of sodium hydroxide solution into 3.2-4.5 g of zinc sulfate. After the reaction is completed, filter the solution, wash the solid, and place it in a vacuum dryer at 70-80 °C for drying for 6-8 h; S5. Under normal temperature conditions, stir and mix 5-8 g of the solid in S4, 80-90 mL of sodium hydroxide solution, and 100-115 mL of the mixed solution for 20-30 min, then immerse the carbon fiber treated in S3 in it, and raise the temperature to 85-95 °C, react for 8-10 h, then cool to normal temperature, take it out, wash it with deionized water 3-4 times, and then place it in a freeze dryer for drying for 2-3 h; S6. Finally, under room temperature conditions, immerse it in a phospholipid-polyethylene glycol-amine solution with a concentration of 0.1 mg / mL for 2.5-3 h, then wash it with deionized water 2-4 times, and then place it in a vacuum drying oven at 55-65 °C for drying for 2.5-3 h to obtain the modified carbon fiber.

3. The fireproof and sound-absorbing woven fabric according to claim 2, wherein: In the above S1, the specific pretreatment method of the carbon fiber is as follows: (1) Immerse the carbon fiber in an acetone solution, raise the temperature to 75-85 °C, carry out condensation reflux for 66-72 h, then wash it with ethanol and deionized water, and then place it in a drying oven at 70-80 °C for drying for 1.5-2.5 h; (2) Immerse the carbon fiber dried in (1) in a mixed solution of 120-150 mL of ethylene glycol solution and 6.5-9 mL of ammonia water for 25-40 min, then raise the temperature to 160-180 °C and react at this temperature for 10-12 h; (3) After the reaction is completed, cool to normal temperature, take it out, wash it alternately with ethanol and deionized water 3-5 times, and then place it in a drying oven at 55-65 °C for drying for 2.5-3 h.

4. The fireproof and sound-absorbing woven fabric according to claim 2, wherein: In S2, ammonium hydroxide is used to adjust the pH value of the graphene oxide suspension solution to 8-9, and the soaking time is 5-6 h.

5. The fireproof and sound-absorbing woven fabric according to claim 2, characterized in that: In S3, the specific soaking method is as follows: Under normal temperature conditions, first place the carbon fiber dried in S2 in the mixed solution and soak it while stirring for 45-60 min, then let it stand for 50-70 min, and then add 0.002 mol / L of sodium hydroxide solution to adjust the pH value of the system to 7-8, and continue to soak for 1.5-2 h.

6. The fireproof and sound-absorbing woven fabric according to claim 2, wherein: In S4, the concentration of zinc sulfate is 2 mol / L, and the concentration of sodium hydroxide solution is 4 mol / L.

7. The fireproof and sound-absorbing woven fabric according to claim 2, wherein: The preparation method of the mixed solution in S3 and S5 is as follows: Pour 2 - 2.6 g of zinc acetate dihydrate into 200 mL of methanol. After complete dissolution, the mixed solution is obtained.

8. A method for preparing a fireproof and sound-absorbing woven fabric according to claim 1, characterized in that, Specifically, it includes the following preparation steps: Step 1: Use the modified carbon fiber as the first warp yarn and the acrylic fiber as the first weft yarn, and weave the first warp yarn and the first weft yarn to obtain the first woven fabric; Step 2: Use the mulberry silk fiber as the second warp yarn and the kapok fiber as the second weft yarn, and weave the second warp yarn and the second weft yarn to obtain the second woven fabric; Step 3: Bond the second woven fabric to the inner side of the first woven fabric to obtain the fireproof and sound-absorbing woven fabric.

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