Multi-layer composite temperature regulating cotton and preparation method thereof

Abstract

The present invention relates to the technical field of multi-layer cotton, and in particular to a multi-layer composite thermostatic cotton and a preparation method thereof, comprising a knitted cotton base layer, a multi-functional improvement layer is provided on the upper part of the knitted cotton base layer, a stabilizing layer is provided on the upper part of the multi-functional improvement layer, and a waterproof layer is provided on the upper part of the stabilizing layer; the waterproof layer is a hyperbranched polyurethane coating. The multi-layer composite thermostatic cotton of the present invention adopts a knitted cotton base layer through a composite multi-functional improvement layer, a stabilizing layer and a waterproof layer, the multi-functional improvement layer is treated by immersion treatment with a modified functional glue, and the carbon nanotube modifier, ethanol, nano zinc oxide and other raw materials in the modified functional glue are matched to optimize the antibacterial performance, thermostatic and mechanical properties of the product.

Description

Technical Field

[0001] The invention relates to the technical field of multi-layer cotton, and in particular to a multi-layer composite temperature regulating cotton and a preparation method thereof. Background Art

[0002] Knitted fabric, also known as sweat cloth, refers to the weft knitted fabric used to make the fabric. It is a fabric formed by using knitting needles to bend the yarn into loops and intertwine them with each other. It is divided into warp knitted fabric and weft knitted fabric.

[0003] The existing knitted cotton fabrics have poor antibacterial performance and water washing stability under water washing conditions, and the product temperature regulating performance is difficult to coordinate and improve with the antibacterial stability. At the same time, the mechanical properties of the product are poor, which further limits the use efficiency of the product. For example, Chinese patent document CN 216733299 U discloses an antibacterial and deodorizing knitted fabric that is easy to clean, including a knitted cotton base layer used as a fabric body, and a synergistic structure for antibacterial and deodorizing use is arranged inside the knitted cotton base layer. The synergistic structure includes a knitted fabric product in a cavity opened in the knitted cotton base layer. Although the antibacterial performance can be achieved, the coordinated balance of antibacterial stability, temperature regulating and mechanical properties is a difficult technology. Based on this, the present invention further improves it. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a multi-layer composite temperature regulating cotton and a preparation method thereof to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] The present invention provides a multi-layer composite temperature regulating cotton, comprising a knitted cotton base layer, a multifunctional improved layer is arranged on the upper part of the knitted cotton base layer, a stabilizing layer is arranged on the upper part of the multifunctional improved layer, and a waterproof layer is arranged on the upper part of the stabilizing layer;

[0007] The thickness of the knitted cotton base layer is 4-7mm, the thickness of the multifunctional improvement layer is 1-3mm, the thickness of the stabilizing layer is 2-4mm, and the thickness of the waterproof layer is 3-5mm;

[0008] The multifunctional improvement layer is formed by fully immersing a knitted cotton base into a modified functional rubber; the stabilizing layer is formed by coating a stabilizer on the surface of the multifunctional improvement layer; and the waterproof layer is a hyperbranched polyurethane coating.

[0009] The modified functional rubber includes the following raw materials in parts by weight:

[0010] 5-10 parts of carbon nanotube modifier, 20-30 parts of ethanol, 4-7 parts of nano zinc oxide, 3-5 parts of epoxy resin, 2-5 parts of silane coupling agent KH560, 5-8 parts of polyurethane adhesive;

[0011] The preparation method of the stabilizer is as follows: 6-7 parts of a performance adjuster based on modified nano-bentonite, 20-30 parts of ethanol, 4-6 parts of epoxy resin, and 6-10 parts of polyurethane adhesive are fully and uniformly mixed to obtain the stabilizer.

[0012] Preferably, the preparation method of the carbon nanotube modifier is:

[0013] S01: irradiating the carbon nanotubes in a proton irradiation box for 5-10 minutes at an irradiation power of 350-400W, and obtaining irradiated carbon nanotubes after the irradiation is completed;

[0014] S02: adding 2-4 parts of sodium dodecylbenzene sulfonate and 1-3 parts of stearic acid to 4-7 parts of chitosan solution, and then adding 1-2 parts of carboxymethyl cellulose, stirring well, to obtain a modifier;

[0015] S03: subjecting the irradiated carbon nanotubes and the modifier to ultrasonic modification treatment at a weight ratio of 2:5, washing with water and drying after the ultrasonic modification, to obtain a modified carbon nanotube agent;

[0016] S04: The modified carbon nanotube agent and the effect adjustment liquid are mixed in a weight ratio of 7:4 and ball-milled at a ball-milling speed of 1000-1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a carbon nanotube modifier.

[0017] Preferably, the ultrasonic power of the ultrasonic modification treatment is 350-400W, and the ultrasonic time is 20-30min.

[0018] Preferably, the mass fraction of the chitosan solution is 2-5%.

[0019] Preferably, the effect adjustment liquid comprises the following raw materials in parts by weight:

[0020] 3-5 parts of hydroxyapatite, 2-4 parts of lanthanum chloride solution, 4-7 parts of sodium citrate solution, 1-3 parts of silicon carbide whiskers and 1-2 parts of silane coupling agent KH550.

[0021] Preferably, the mass fraction of the lanthanum chloride solution is 2-5%; the mass fraction of the sodium citrate solution is 4-8%.

[0022] Preferably, the preparation method of the modified nano-bentonite-based performance modifier is:

[0023] S101: heat treating the nano bentonite at a temperature of 210-230° C. for 10-15 min, then cooling to 55° C. at a rate of 2-5° C. / min, and heat-insulating to obtain heat-treated nano bentonite;

[0024] S102: mixing the heat-treated nano-bentonite, the yttrium nitrate solution and the phosphate buffer solution with a pH value of 5.0 in a weight ratio of 2:5:1 to obtain a nano-bentonite solution;

[0025] S103: adding 1-2 parts of nano-silica sol and 3-5 parts of nano-silicon dioxide to 4-7 parts of nano-bentonite liquid, and then adding 1-2 parts of silane coupling agent KH560, mixing and ball milling, after the ball milling is completed, washing and drying are performed to obtain a performance-enhancing agent based on modified nano-bentonite.

[0026] Preferably, the mass fraction of the yttrium nitrate solution is 4-6%.

[0027] Preferably, the ball milling speed of the mixed ball milling treatment is 1500-1700 r / min, and the ball milling time is 1 hour.

[0028] The present invention also provides a method for preparing a multi-layer composite temperature regulating cotton, comprising the following steps:

[0029] Step 1: Mix the raw materials in the modified functional rubber to obtain the modified functional rubber, and fully immerse the knitted cotton base layer into the modified functional rubber to form a multifunctional improved layer;

[0030] Step 2: applying a stabilizer to the surface of the multifunctional improved layer to form a stabilizing layer;

[0031] Step 3: a hyperbranched polyurethane coating is provided on the stabilizing layer to form a waterproof layer, thereby obtaining a multi-layer composite temperature regulating cotton.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The multi-layer composite temperature regulating cotton of the present invention adopts a knitted cotton base layer and is subjected to a composite multifunctional improvement layer, a stabilization layer and a waterproof layer. The multifunctional improvement layer is treated by immersion in a modified functional glue. The carbon nanotube modifier, ethanol, nano zinc oxide and other raw materials in the modified functional glue are matched to optimize the antibacterial performance, temperature regulating and mechanical properties of the product. The carbon nanotube modifier used uses carbon nanotubes as a matrix raw material to improve the temperature regulating function of the product. Sodium dodecylbenzene sulfonate, stearic acid, chitosan solution and carboxymethyl cellulose are matched to obtain a modifier. The carbon nanotubes are modified by the modifier to optimize the active efficiency and dispersion of the carbon nanotubes. At the same time, the effect regulating liquid used coordinates with the modifier to jointly improve the carbon nanotubes, further improving the antibacterial and water-resistant stability of the product, and optimizing the mechanical properties and temperature regulating properties of the product. The effect regulating liquid adopts hydroxyapatite and silicon carbide whiskers, and the whisker structure of the whisker body is coordinated with hydroxyapatite. Through the whisker structure dispersion system, and the point structure of hydroxyapatite, the coordination of product performance is optimized. At the same time, after lanthanum chloride solution and sodium citrate The solution and the silane coupling agent KH550 are jointly blended and coordinated. The raw materials in the effect-adjusting liquid are coordinated with each other to optimize the coordination of system performance. At the same time, a stabilizing layer coordinated with a stabilizer is used to coordinate the synergistic multifunctional improvement layer. The effect-adjusting agent based on modified nano-bentonite in the stabilizer uses nano-bentonite for heat treatment at a temperature of 210-230°C for 10-15min, and then cools to 55°C at a rate of 2-5°C / min to optimize the active efficiency of the nano-bentonite and improve the interlaminar spacing, thereby optimizing the accommodation space of the bentonite. The yttrium nitrate solution and the phosphate buffer solution with a pH value of 5.0 are combined to obtain the nano-bentonite liquid. The nano-silica sol, nano-silicon dioxide, nano-bentonite liquid and the silane coupling agent KH560 are mixed and ball-milled. Through the coordination and improvement between the raw materials, the lamellar nano-bentonite can play a barrier stability effect. Through the process improvement of the present invention, the product performance is further coordinated and adjusted, and the stability of the product under alkali corrosion and high temperature conditions is improved, thereby further enhancing the performance effect of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the layered structure of the present invention. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1As shown, a multi-layer composite temperature regulating cotton of this embodiment comprises a knitted cotton base layer 1, a multifunctional improved layer 2 is arranged on the upper part of the knitted cotton base layer 1, a stabilizing layer 3 is arranged on the upper part of the multifunctional improved layer 2, and a waterproof layer 4 is arranged on the upper part of the stabilizing layer 3;

[0037] The thickness of the knitted cotton base layer 1 is 4-7 mm, the thickness of the multifunctional improved layer 2 is 1-3 mm, the thickness of the stabilizing layer 3 is 2-4 mm, and the thickness of the waterproof layer 4 is 3-5 mm;

[0038] The multifunctional improved layer 2 is formed by fully immersing the knitted cotton base layer 1 into the modified functional rubber to form the multifunctional improved layer 2; the stabilizing layer 3 is formed by coating the surface of the multifunctional improved layer 2 with a stabilizer; and the waterproof layer 4 is a hyperbranched polyurethane coating.

[0039] The modified functional rubber includes the following raw materials in parts by weight:

[0040] 5-10 parts of carbon nanotube modifier, 20-30 parts of ethanol, 4-7 parts of nano zinc oxide, 3-5 parts of epoxy resin, 2-5 parts of silane coupling agent KH560, 5-8 parts of polyurethane adhesive;

[0041] The preparation method of the stabilizer is as follows: 6-7 parts of a performance adjuster based on modified nano-bentonite, 20-30 parts of ethanol, 4-6 parts of epoxy resin, and 6-10 parts of polyurethane adhesive are fully and uniformly mixed to obtain the stabilizer.

[0042] The preparation method of the carbon nanotube modifier of this embodiment is:

[0043] S01: irradiating the carbon nanotubes in a proton irradiation box for 5-10 minutes at an irradiation power of 350-400W, and obtaining irradiated carbon nanotubes after the irradiation is completed;

[0044] S02: adding 2-4 parts of sodium dodecylbenzene sulfonate and 1-3 parts of stearic acid to 4-7 parts of chitosan solution, and then adding 1-2 parts of carboxymethyl cellulose, stirring well, to obtain a modifier;

[0045] S03: subjecting the irradiated carbon nanotubes and the modifier to ultrasonic modification treatment at a weight ratio of 2:5, washing with water and drying after the ultrasonic modification, to obtain a modified carbon nanotube agent;

[0046] S04: The modified carbon nanotube agent and the effect adjustment liquid are mixed in a weight ratio of 7:4 and ball-milled at a ball-milling speed of 1000-1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a carbon nanotube modifier.

[0047] The ultrasonic power of the ultrasonic modification treatment in this embodiment is 350-400W, and the ultrasonic time is 20-30min.

[0048] The mass fraction of the chitosan solution in this embodiment is 2-5%.

[0049] The effect adjustment liquid of this embodiment comprises the following raw materials in parts by weight:

[0050] 3-5 parts of hydroxyapatite, 2-4 parts of lanthanum chloride solution, 4-7 parts of sodium citrate solution, 1-3 parts of silicon carbide whiskers and 1-2 parts of silane coupling agent KH550.

[0051] The mass fraction of the lanthanum chloride solution in this embodiment is 2-5%; the mass fraction of the sodium citrate solution is 4-8%.

[0052] The preparation method of the performance-enhancing agent based on modified nano-bentonite in this embodiment is as follows:

[0053] S101: heat treating the nano bentonite at a temperature of 210-230° C. for 10-15 min, then cooling to 55° C. at a rate of 2-5° C. / min, and heat-insulating to obtain heat-treated nano bentonite;

[0054] S102: mixing the heat-treated nano-bentonite, the yttrium nitrate solution and the phosphate buffer solution with a pH value of 5.0 in a weight ratio of 2:5:1 to obtain a nano-bentonite solution;

[0055] S103: adding 1-2 parts of nano-silica sol and 3-5 parts of nano-silicon dioxide to 4-7 parts of nano-bentonite liquid, and then adding 1-2 parts of silane coupling agent KH560, mixing and ball milling, after the ball milling is completed, washing and drying are performed to obtain a performance-enhancing agent based on modified nano-bentonite.

[0056] The mass fraction of the yttrium nitrate solution in this embodiment is 4-6%.

[0057] The ball milling speed of the mixed ball milling process in this embodiment is 1500-1700 r / min, and the ball milling is 1 hour.

[0058] A method for preparing a multi-layer composite temperature regulating cotton in this embodiment includes the following steps:

[0059] Step 1: Mix the raw materials in the modified functional rubber to obtain the modified functional rubber, and fully immerse the knitted cotton base layer 1 into the modified functional rubber to form a multifunctional improved layer 2;

[0060] Step 2: applying a stabilizer to the surface of the multifunctional improved layer 2 to form a stabilized layer 3;

[0061] Step three: a hyperbranched polyurethane coating is provided on the stabilizing layer 3 to form a waterproof layer 4, thereby obtaining a multi-layer composite temperature regulating cotton.

[0062] Embodiment 1: A multi-layer composite temperature regulating cotton comprises a knitted cotton base layer 1, a multifunctional improved layer 2 is arranged on the upper part of the knitted cotton base layer 1, a stabilizing layer 3 is arranged on the upper part of the multifunctional improved layer 2, and a waterproof layer 4 is arranged on the upper part of the stabilizing layer 3;

[0063] The thickness of the knitted cotton base layer 1 is 4 mm, the thickness of the multifunctional improvement layer 2 is 1 mm, the thickness of the stabilizing layer 3 is 2 mm, and the thickness of the waterproof layer 4 is 3 mm;

[0064] The multifunctional improved layer 2 is formed by fully immersing the knitted cotton base layer 1 into the modified functional rubber to form the multifunctional improved layer 2; the stabilizing layer 3 is formed by coating the surface of the multifunctional improved layer 2 with a stabilizer; and the waterproof layer 4 is a hyperbranched polyurethane coating.

[0065] The modified functional rubber includes the following raw materials in parts by weight:

[0066] 5 parts of carbon nanotube modifier, 20 parts of ethanol, 4 parts of nano zinc oxide, 3 parts of epoxy resin, 2 parts of silane coupling agent KH560, 5 parts of polyurethane adhesive;

[0067] The preparation method of the stabilizer is as follows: 6 parts of a performance adjuster based on modified nano-bentonite, 20 parts of ethanol, 4 parts of epoxy resin, and 6 parts of polyurethane adhesive are fully and evenly mixed to obtain the stabilizer.

[0068] The preparation method of the carbon nanotube modifier of this embodiment is:

[0069] S01: irradiating the carbon nanotubes in a proton irradiation box for 5 minutes at an irradiation power of 350W, and obtaining irradiated carbon nanotubes after the irradiation is completed;

[0070] S02: Add 2 parts of sodium dodecylbenzene sulfonate and 1 part of stearic acid to 4 parts of chitosan solution, then add 1 part of carboxymethyl cellulose, stir well, and obtain a modifier;

[0071] S03: subjecting the irradiated carbon nanotubes and the modifier to ultrasonic modification treatment at a weight ratio of 2:5, washing with water and drying after the ultrasonic modification, to obtain a modified carbon nanotube agent;

[0072] S04: The modified carbon nanotube agent and the effect adjustment liquid are mixed in a weight ratio of 7:4 and subjected to ball milling treatment. The ball milling speed is 1000 r / min and the ball milling is performed for 2 hours. After the ball milling is completed, the mixture is washed with water and dried to obtain a carbon nanotube modifier.

[0073] The ultrasonic power of the ultrasonic modification treatment in this embodiment is 350W, and the ultrasonic time is 20min.

[0074] The mass fraction of the chitosan solution in this embodiment is 2%.

[0075] The effect adjustment liquid of this embodiment comprises the following raw materials in parts by weight:

[0076] 3 parts of hydroxyapatite, 2 parts of lanthanum chloride solution, 4 parts of sodium citrate solution, 1 part of silicon carbide whisker and 1 part of silane coupling agent KH550.

[0077] The mass fraction of the lanthanum chloride solution in this embodiment is 2%; the mass fraction of the sodium citrate solution is 4%.

[0078] The preparation method of the performance-enhancing agent based on modified nano-bentonite in this embodiment is as follows:

[0079] S101: heat-treating the nano-bentonite at 210° C. for 10 min, then cooling to 55° C. at a rate of 2° C. / min, and heat-treating the nano-bentonite to obtain heat-treated nano-bentonite;

[0080] S102: mixing the heat-treated nano-bentonite, the yttrium nitrate solution and the phosphate buffer solution with a pH value of 5.0 in a weight ratio of 2:5:1 to obtain a nano-bentonite solution;

[0081] S103: adding 1 part of nano-silica sol and 3 parts of nano-silicon dioxide to 4 parts of nano-bentonite liquid, and then adding 1 part of silane coupling agent KH560, mixing and ball milling, after the ball milling is completed, washing and drying are performed to obtain a performance-enhancing agent based on modified nano-bentonite.

[0082] The mass fraction of the yttrium nitrate solution in this embodiment is 4%.

[0083] The ball milling speed of the mixed ball milling treatment in this embodiment is 1500 r / min, and the ball milling is 1 hour.

[0084] A method for preparing a multi-layer composite temperature regulating cotton in this embodiment includes the following steps:

[0085] Step 1: Mix the raw materials in the modified functional rubber to obtain the modified functional rubber, and fully immerse the knitted cotton base layer 1 into the modified functional rubber to form a multifunctional improved layer 2;

[0086] Step 2: applying a stabilizer to the surface of the multifunctional improved layer 2 to form a stabilized layer 3;

[0087] Step three: a hyperbranched polyurethane coating is provided on the stabilizing layer 3 to form a waterproof layer 4, thereby obtaining a multi-layer composite temperature regulating cotton.

[0088] Embodiment 2: A multi-layer composite temperature regulating cotton comprises a knitted cotton base layer 1, a multifunctional improved layer 2 is arranged on the upper part of the knitted cotton base layer 1, a stabilizing layer 3 is arranged on the upper part of the multifunctional improved layer 2, and a waterproof layer 4 is arranged on the upper part of the stabilizing layer 3;

[0089] The thickness of the knitted cotton base layer 1 is 7 mm, the thickness of the multifunctional improvement layer 2 is 3 mm, the thickness of the stabilizing layer 3 is 4 mm, and the thickness of the waterproof layer 4 is 5 mm;

[0090] The multifunctional improved layer 2 is formed by fully immersing the knitted cotton base layer 1 into the modified functional rubber to form the multifunctional improved layer 2; the stabilizing layer 3 is formed by coating the surface of the multifunctional improved layer 2 with a stabilizer; and the waterproof layer 4 is a hyperbranched polyurethane coating.

[0091] The modified functional rubber includes the following raw materials in parts by weight:

[0092] 10 parts of carbon nanotube modifier, 30 parts of ethanol, 7 parts of nano zinc oxide, 5 parts of epoxy resin, 5 parts of silane coupling agent KH560, and 8 parts of polyurethane adhesive;

[0093] The preparation method of the stabilizer is as follows: 7 parts of a performance-enhancing agent based on modified nano-bentonite, 30 parts of ethanol, 6 parts of epoxy resin, and 10 parts of a polyurethane adhesive are fully and evenly mixed to obtain the stabilizer.

[0094] The preparation method of the carbon nanotube modifier of this embodiment is:

[0095] S01: irradiating the carbon nanotubes in a proton irradiation box for 10 minutes at an irradiation power of 400 W, and obtaining irradiated carbon nanotubes after the irradiation is completed;

[0096] S02: adding 4 parts of sodium dodecylbenzene sulfonate and 3 parts of stearic acid to 7 parts of chitosan solution, and then adding 2 parts of carboxymethyl cellulose, stirring well, to obtain a modifier;

[0097] S03: subjecting the irradiated carbon nanotubes and the modifier to ultrasonic modification treatment at a weight ratio of 2:5, washing with water and drying after the ultrasonic modification, to obtain a modified carbon nanotube agent;

[0098] S04: The modified carbon nanotube agent and the effect adjustment liquid are mixed in a weight ratio of 7:4 and subjected to ball milling treatment. The ball milling speed is 1500r / min and the ball milling is performed for 2h. After the ball milling is completed, the mixture is washed with water and dried to obtain a carbon nanotube modifier.

[0099] The ultrasonic power of the ultrasonic modification treatment in this embodiment is 400 W, and the ultrasonic time is 30 min.

[0100] The mass fraction of the chitosan solution in this embodiment is 5%.

[0101] The effect adjustment liquid of this embodiment comprises the following raw materials in parts by weight:

[0102] 5 parts of hydroxyapatite, 4 parts of lanthanum chloride solution, 7 parts of sodium citrate solution, 3 parts of silicon carbide whiskers and 2 parts of silane coupling agent KH550.

[0103] The mass fraction of the lanthanum chloride solution in this embodiment is 5%; the mass fraction of the sodium citrate solution is 8%.

[0104] The preparation method of the performance-enhancing agent based on modified nano-bentonite in this embodiment is as follows:

[0105] S101: heat-treating the nano-bentonite at 230° C. for 15 min, then cooling to 55° C. at a rate of 5° C. / min, and heat-treating the nano-bentonite to obtain heat-treated nano-bentonite;

[0106] S102: mixing the heat-treated nano-bentonite, the yttrium nitrate solution and the phosphate buffer solution with a pH value of 5.0 in a weight ratio of 2:5:1 to obtain a nano-bentonite solution;

[0107] S103: adding 2 parts of nano-silica sol and 5 parts of nano-silicon dioxide to 7 parts of nano-bentonite liquid, and then adding 2 parts of silane coupling agent KH560, mixing and ball milling, after the ball milling is completed, washing and drying are performed to obtain a performance-enhancing agent based on modified nano-bentonite.

[0108] The mass fraction of the yttrium nitrate solution in this embodiment is 6%.

[0109] The ball milling speed of the mixed ball milling process in this embodiment is 1700 r / min, and the ball milling is 1 hour.

[0110] A method for preparing a multi-layer composite temperature regulating cotton in this embodiment includes the following steps:

[0111] Step 1: Mix the raw materials in the modified functional rubber to obtain the modified functional rubber, and fully immerse the knitted cotton base layer 1 into the modified functional rubber to form a multifunctional improved layer 2;

[0112] Step 2: applying a stabilizer to the surface of the multifunctional improved layer 2 to form a stabilized layer 3;

[0113] Step three: a hyperbranched polyurethane coating is provided on the stabilizing layer 3 to form a waterproof layer 4, thereby obtaining a multi-layer composite temperature regulating cotton.

[0114] Embodiment 3: A multi-layer composite temperature regulating cotton comprises a knitted cotton base layer 1, a multifunctional improved layer 2 is arranged on the upper part of the knitted cotton base layer 1, a stabilizing layer 3 is arranged on the upper part of the multifunctional improved layer 2, and a waterproof layer 4 is arranged on the upper part of the stabilizing layer 3;

[0115] The thickness of the knitted cotton base layer 1 is 5.5 mm, the thickness of the multifunctional improvement layer 2 is 2 mm, the thickness of the stabilizing layer 3 is 3 mm, and the thickness of the waterproof layer 4 is 4 mm;

[0116] The multifunctional improved layer 2 is formed by fully immersing the knitted cotton base layer 1 into the modified functional rubber to form the multifunctional improved layer 2; the stabilizing layer 3 is formed by coating the surface of the multifunctional improved layer 2 with a stabilizer; and the waterproof layer 4 is a hyperbranched polyurethane coating.

[0117] The modified functional rubber includes the following raw materials in parts by weight:

[0118] 7.5 parts of carbon nanotube modifier, 25 parts of ethanol, 5.5 parts of nano zinc oxide, 4 parts of epoxy resin, 3.5 parts of silane coupling agent KH560, and 6.5 parts of polyurethane adhesive;

[0119] The preparation method of the stabilizer is as follows: 6.5 parts of a performance adjuster based on modified nano-bentonite, 25 parts of ethanol, 5 parts of epoxy resin, and 8 parts of polyurethane adhesive are fully and uniformly mixed to obtain the stabilizer.

[0120] The preparation method of the carbon nanotube modifier of this embodiment is:

[0121] S01: irradiating the carbon nanotubes in a proton irradiation box for 7.5 minutes at an irradiation power of 370 W, and obtaining irradiated carbon nanotubes after the irradiation is completed;

[0122] S02: Add 3 parts of sodium dodecylbenzene sulfonate and 2 parts of stearic acid to 5.5 parts of chitosan solution, then add 1.5 parts of carboxymethyl cellulose, stir well, and obtain a modifier;

[0123] S03: subjecting the irradiated carbon nanotubes and the modifier to ultrasonic modification treatment at a weight ratio of 2:5, washing with water and drying after the ultrasonic modification, to obtain a modified carbon nanotube agent;

[0124] S04: The modified carbon nanotube agent and the effect adjustment liquid are mixed in a weight ratio of 7:4 and subjected to ball milling treatment. The ball milling speed is 1250 r / min and the ball milling is performed for 2 h. After the ball milling is completed, the mixture is washed with water and dried to obtain a carbon nanotube modifier.

[0125] The ultrasonic power of the ultrasonic modification treatment in this embodiment is 370W, and the ultrasonic time is 25min.

[0126] The mass fraction of the chitosan solution in this embodiment is 3.5%.

[0127] The effect adjustment liquid of this embodiment comprises the following raw materials in parts by weight:

[0128] 4 parts of hydroxyapatite, 3 parts of lanthanum chloride solution, 5.5 parts of sodium citrate solution, 2 parts of silicon carbide whiskers and 1.5 parts of silane coupling agent KH550.

[0129] The mass fraction of the lanthanum chloride solution in this embodiment is 3.5%; the mass fraction of the sodium citrate solution is 6%.

[0130] The preparation method of the performance-enhancing agent based on modified nano-bentonite in this embodiment is as follows:

[0131] S101: heat treating the nano bentonite at 220° C. for 12.5 min, then cooling to 55° C. at a rate of 3.5° C. / min, and heat-treating the nano bentonite to obtain heat-treated nano bentonite;

[0132] S102: mixing the heat-treated nano-bentonite, the yttrium nitrate solution and the phosphate buffer solution with a pH value of 5.0 in a weight ratio of 2:5:1 to obtain a nano-bentonite solution;

[0133] S103: adding 1.5 parts of nano-silica sol and 4 parts of nano-silicon dioxide to 5.5 parts of nano-bentonite liquid, and then adding 1.5 parts of silane coupling agent KH560, mixing and ball milling, after the ball milling is completed, washing and drying are performed to obtain a performance-enhancing agent based on modified nano-bentonite.

[0134] The mass fraction of the yttrium nitrate solution in this embodiment is 5%.

[0135] The ball milling speed of the mixed ball milling process in this embodiment is 1600 r / min, and the ball milling is 1 hour.

[0136] A method for preparing a multi-layer composite temperature regulating cotton in this embodiment includes the following steps:

[0137] Step 1: Mix the raw materials in the modified functional rubber to obtain the modified functional rubber, and fully immerse the knitted cotton base layer 1 into the modified functional rubber to form a multifunctional improved layer 2;

[0138] Step 2: applying a stabilizer to the surface of the multifunctional improved layer 2 to form a stabilized layer 3;

[0139] Step three: a hyperbranched polyurethane coating is provided on the stabilizing layer 3 to form a waterproof layer 4, thereby obtaining a multi-layer composite temperature regulating cotton.

[0140] Comparative Example 1:

[0141] The difference from Example 3 is that no carbon nanotube modifier is added.

[0142] Comparative Example 2:

[0143] The difference from Example 3 is that no modifier treatment is used in the preparation of the carbon nanotube modifier.

[0144] Comparative Example 3:

[0145] The difference from Example 3 is that no conditioning liquid treatment is used in the preparation of the carbon nanotube modifier.

[0146] Comparative Example 4:

[0147] The difference from Example 3 is that hydroxyapatite is not added to the conditioning solution.

[0148] Comparative Example 5:

[0149] The difference from Example 3 is that no lanthanum chloride solution is added to the effect adjustment solution.

[0150] Comparative Example 6:

[0151] The difference from Example 3 is that no silicon carbide whiskers are added to the conditioning solution.

[0152] Comparative Example 7:

[0153] The difference from Example 3 is that no conditioning agent based on modified nano-bentonite is added.

[0154] Comparative Example 8:

[0155] The difference from Example 3 is that no nano silicon dioxide is added in the preparation of the performance-enhancing agent based on modified nano bentonite.

[0156] Comparative Example 9:

[0157] The difference from Example 3 is that nano silica sol and silane coupling agent KH560 are not added in the preparation of the performance-enhancing agent based on modified nano bentonite.

[0158] Comparative Example 10:

[0159] The difference from Example 3 is that the nano-bentonite liquid is replaced by deionized water.

[0160] Comparative Example 11:

[0161] The difference from Example 3 is that no heat-treated nano-bentonite is added to the nano-bentonite liquid.

[0162] The performance of the products of Examples 1-3 and Comparative Examples 1-11 was tested under normal conditions, and the measurement results are shown in Table 1.

[0163] Table 1: Performance test results of products of Examples 1-3 and Comparative Examples 1-11 under normal conditions

[0164]

[0165] The product was placed in 2% sodium hydroxide alkaline mist for 24 hours, and then placed at 60°C for 12 hours. The treatment was repeated 10 times to test the product's alkali resistance and temperature stability. The test results are shown in Table 2.

[0166] Table 2: Test results of alkali resistance and temperature resistance of products of Examples 1-3 and Comparative Examples 1-11

[0167]

[0168] It can be concluded from Table 1 and Table 2 that the product of Example 3 of the present invention has excellent E. coli antibacterial persistence, the product has significant antibacterial stability under water washing conditions, and the product has significant coordination effects of tensile mechanical properties and temperature regulating protection performance, and the product has significant alkali corrosion resistance and temperature stability effects;

[0169] The present invention does not add a carbon nanotube modifier or one of the performance-adjusting agents based on modified nano-bentonite, and the performance effect of the product deteriorates significantly. The performance effect of the product is most significant when the two are coordinated and work together.

[0170] The performance of the products tended to deteriorate when no modifier treatment or conditioning liquid treatment was used in the preparation of the carbon nanotube modifier. The performance of the products tended to deteriorate to varying degrees when no hydroxyapatite, no lanthanum chloride solution, or silicon carbide whiskers were added to the conditioning liquid. The carbon nanotube modifier obtained by combining the conditioning liquid obtained by the method of the present invention with the modifier had the most significant product performance effect.

[0171] In the preparation of the performance-enhancing agent based on modified nano-bentonite, nano-silica was not added, nano-silica sol was not added, silane coupling agent KH560 and nano-bentonite liquid were replaced by deionized water, and heat-treated nano-bentonite was not added to the nano-bentonite liquid. The performance of the products all tended to deteriorate. Only the performance-enhancing agent based on modified nano-bentonite obtained by the method of the present invention had the most significant performance effect. The effects of other methods were not as obvious as those of the present invention.

[0172] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0173] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-layer composite temperature regulating cotton, comprising a knitted cotton base layer (1), characterized in that: A multifunctional improved layer (2) is provided on the upper part of the knitted cotton base layer (1), a stabilizing layer (3) is provided on the upper part of the multifunctional improved layer (2), and a waterproof layer (4) is provided on the upper part of the stabilizing layer (3); The thickness of the knitted cotton base layer (1) is 4-7 mm, the thickness of the multifunctional improved layer (2) is 1-3 mm, the thickness of the stabilizing layer (3) is 2-4 mm, and the thickness of the waterproof layer (4) is 3-5 mm; The multifunctional improved layer (2) is formed by fully immersing a knitted cotton base layer (1) into a modified functional rubber to form the multifunctional improved layer (2); the stabilizing layer (3) is formed by coating a stabilizer on the surface of the multifunctional improved layer (2) to form the stabilizing layer (3); and the waterproof layer (4) is a hyperbranched polyurethane coating; The modified functional rubber includes the following raw materials in parts by weight: 5-10 parts of carbon nanotube modifier, 20-30 parts of ethanol, 4-7 parts of nano zinc oxide, 3-5 parts of epoxy resin, 2-5 parts of silane coupling agent KH560, 5-8 parts of polyurethane adhesive; The preparation method of the stabilizer is as follows: 6-7 parts of a conditioning agent based on modified nano-bentonite, 20-30 parts of ethanol, 4-6 parts of epoxy resin, and 6-10 parts of polyurethane adhesive are fully mixed and uniformly mixed to obtain the stabilizer; The preparation method of the carbon nanotube modifier is: S01: irradiating the carbon nanotubes in a proton irradiation box for 5-10 minutes at an irradiation power of 350-400W, and obtaining irradiated carbon nanotubes after the irradiation is completed; S02: adding 2-4 parts of sodium dodecylbenzene sulfonate and 1-3 parts of stearic acid to 4-7 parts of chitosan solution, and then adding 1-2 parts of carboxymethyl cellulose, stirring well, to obtain a modifier; S03: subjecting the irradiated carbon nanotubes and the modifier to ultrasonic modification treatment at a weight ratio of 2:5, washing with water and drying after the ultrasonic modification, to obtain a modified carbon nanotube agent; S04: The modified carbon nanotube agent and the effect adjustment liquid are mixed in a weight ratio of 7:4 and ball-milled at a ball-milling speed of 1000-1500 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a carbon nanotube modifier; The effect adjustment liquid comprises the following raw materials in parts by weight: 3-5 parts of hydroxyapatite, 2-4 parts of lanthanum chloride solution, 4-7 parts of sodium citrate solution, 1-3 parts of silicon carbide whiskers and 1-2 parts of silane coupling agent KH550; The preparation method of the modified nano-bentonite-based performance modifier is as follows: S101: heat treating the nano bentonite at a temperature of 210-230° C. for 10-15 min, then cooling to 55° C. at a rate of 2-5° C. / min, and heat-insulating to obtain heat-treated nano bentonite; S102: mixing the heat-treated nano-bentonite, the yttrium nitrate solution and the phosphate buffer solution with a pH value of 5.0 in a weight ratio of 2:5:1 to obtain a nano-bentonite solution; S103: adding 1-2 parts of nano-silica sol and 3-5 parts of nano-silicon dioxide to 4-7 parts of nano-bentonite liquid, and then adding 1-2 parts of silane coupling agent KH560, mixing and ball milling, after the ball milling is completed, washing and drying are performed to obtain a performance-enhancing agent based on modified nano-bentonite.

2. The multi-layer composite temperature regulating cotton according to claim 1, characterized in that: The ultrasonic power of the ultrasonic modification treatment is 350-400W, and the ultrasonic time is 20-30min.

3. The multi-layer composite temperature regulating cotton according to claim 1, characterized in that: The mass fraction of the chitosan solution is 2-5%.

4. The multi-layer composite temperature regulating cotton according to claim 1, characterized in that: The mass fraction of the lanthanum chloride solution is 2-5%; the mass fraction of the sodium citrate solution is 4-8%.

5. The multi-layer composite temperature regulating cotton according to claim 1, characterized in that: The mass fraction of the yttrium nitrate solution is 4-6%.

6. The multi-layer composite temperature regulating cotton according to claim 1, characterized in that: The ball milling speed of the mixed ball milling treatment is 1500-1700 r / min, and the ball milling is performed for 1 hour.

7. A method for preparing a multi-layer composite temperature regulating cotton, used for preparing a multi-layer composite temperature regulating cotton as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Mix the raw materials in the modified functional rubber to obtain the modified functional rubber, and fully immerse the knitted cotton base layer (1) into the modified functional rubber to form a multifunctional improved layer (2); Step 2: applying a stabilizer to the surface of the multifunctional improved layer (2) to form a stabilized layer (3); Step 3: a hyperbranched polyurethane coating is provided on the stabilizing layer (3) to form a waterproof layer (4), thereby obtaining a multi-layer composite temperature regulating cotton.

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