Energy-storage temperature-adjusting noctilucent composite fabric, preparation method and application

Abstract

The invention relates to the field of layered composite fabrics, and discloses an energy-storage temperature-adjusting noctilucent composite fabric, a preparation method and application. The preparation process comprises the following steps: sequentially carrying out ionic liquid pretreatment, zinc-ionic liquid compound coating and VTMS silane coupling agent surface treatment on a nylon fabric, coating the nylon fabric with a noctilucent coating containing noctilucent powder and PDMS, laminating and compounding the prepared noctilucent coating / nylon composite fabric and a hydrophobic silicon dioxide / polyurethane waterproof moisture-permeable film, and carrying out drying, so as to obtain the noctilucent composite fabric. The energy storage and temperature regulation noctilucent composite fabric is obtained. The composite fabric has energy storage, temperature adjustment and noctilucent properties and can be applied to the field of outdoor fabrics, the noctilucent coating has a microporous structure, air permeability and luminescence uniformity are ensured, and the waterproof and moisture permeable film endows the fabric with good waterproof and moisture permeable properties.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of layered composite fabrics, in particular to a kind of energy storage temperature regulating luminescent composite fabric, preparation method and application. BACKGROUND

[0002] With the improvement of people's functional requirements for clothing, functional textiles have become an important development direction of the textile industry. The night self-luminous fabric is widely concerned in the field of outdoor sports, safety warning and other fields due to its self-luminous visual characteristics at night. Traditional luminescent fabric usually adopts printing, coating or luminescent fiber blending technology to obtain, but there are the following problems: the luminescent fabric obtained by printing has poor air permeability and low luminous brightness; the luminescent fabric with coating has good visual effect, but poor air permeability and hard hand feeling; the production process of luminescent fiber blending is complex and the cost is high, and the brightness effect is limited by the proportion of luminescent fiber.

[0003] On the other hand, most of the temperature regulating fabrics use phase change materials and far infrared fibers. Phase change materials have good heat absorption and heat release temperature regulation. Far infrared fibers have good heat preservation effect by reflecting and radiating human body heat. But this kind of fabric has single function and lacks night visibility function, which is difficult to meet the comprehensive needs of people's night visibility and temperature regulation. Therefore, it is urgent to develop a new type of fabric with night light function and temperature regulation function, which can realize efficient and long-lasting night light and has intelligent temperature regulation performance. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a kind of energy storage temperature regulating luminescent composite fabric, preparation method and application. The composite fabric has energy storage, temperature regulation and luminescent performance, and can be applied in the field of outdoor fabric. The luminescent coating has a microporous structure, which ensures the air permeability and uniformity of light emission. The waterproof and moisture permeable film gives the fabric good waterproof and moisture permeable performance.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] A preparation method of an energy storage temperature regulating luminescent composite fabric, comprising the following steps:

[0007] Step (1), mix night light powder, PDMS, curing agent, tetraethyl orthosilicate, pore-forming agent ammonium aminocarbonate, pore-forming agent water and solvent uniformly to obtain night light coating;

[0008] The night light coating is coated on one side of the modified nylon fabric, and a night light coating is formed after coating. After baking, the night light coating / nylon composite fabric is obtained after cooling.

[0009] The modified nylon fabric is prepared by the following steps:

[0010] S11, dip the nylon fabric in a [BMIM]Cl (1-butyl-3-methylimidazolium chloride) ionic liquid aqueous solution, after the dipping is completed, wash, dry, and obtain the ionic liquid treated nylon fabric;

[0011] S12, at room temperature, add Zn(TFSI)2 (zinc bis-trifluoromethylsulfonylimide salt) into [EMIM]Ac (1-ethyl-3-methylimidazolium acetate) ionic liquid, stir to mix uniformly, and obtain a zinc-ionic liquid composite solution;

[0012] Coat the zinc-ionic liquid composite solution on both sides of the ionic liquid treated nylon fabric, after the coating is completed, heat cure, after the curing is completed, cool, and obtain a zinc-ionic liquid composite modified nylon fabric;

[0013] S13, soak the zinc-ionic liquid composite modified nylon fabric in an ethanol / water solution containing VTMS, react, take out after the reaction is completed, and solidify, and obtain a modified nylon fabric;

[0014] Step (2), coat hot melt adhesive on one side of the hydrophobic silica / polyurethane waterproof and moisture permeable film by using a dispensing process, and adhere the adhesive coated side of the hydrophobic silica / polyurethane waterproof and moisture permeable film to the side of the luminescent coating / nylon composite fabric without the luminescent coating, and hot press to obtain an energy storage temperature adjusting luminescent composite fabric.

[0015] The hydrophobic silica / polyurethane waterproof and moisture permeable film is prepared by the following steps:

[0016] S21, mix HDI trimer with N,N-dimethylformamide, add N-[3-(trimethoxysilyl)propyl]n-butylamine, react, and after the reaction is completed, obtain a crosslinking agent;

[0017] S22, mix N,N-dimethylformamide and butyl acetate uniformly to obtain a mixed solvent, add polyurethane and stir uniformly, add the crosslinking agent and the catalyst triethylamine, react, and after the reaction is completed, obtain a polyurethane spinning solution;

[0018] S23, load the spinning solution into a syringe of an electrospinning device, electrospun, form a fiber membrane after the spinning is completed, take down the fiber membrane, and lay flat to dry until the solvent is completely volatilized to obtain a polyurethane waterproof and moisture permeable film;

[0019] S24, place the polyurethane waterproof and moisture permeable film in an ethanol aqueous solution, add ammonia water, dropwise add tetraethyl orthosilicate, stir to react, after the reaction is completed, add perfluorodecyltrimethoxysilane to continue the reaction, after the reaction is completed, cool, wash, and dry to obtain a hydrophobic silica / polyurethane waterproof and moisture permeable film.

[0020] Preferably, in the step (1), the solidification agent is a platinum catalyst; the pore-forming agent is ammonium bicarbonate and water; the solvent is ethyl acetate; the luminescent coating contains, in terms of mass percentage, 15-35% of the luminescent powder, 3-10% of PDMS, 0.75-7.5% of the platinum catalyst, 5-10% of tetraethyl orthosilicate, 5-15% of ammonium bicarbonate, 3-10% of water, and the rest of ethyl acetate; the luminescent powder is any one of strontium aluminate and strontium magnesium silicate or a mixture of the two.

[0021] Preferably, in the step (1), the spraying method is air spraying, the pressure is 0.1-0.7 MPa, and the nozzle diameter is 0.3-1 mm; the baking conditions are pre-baking at 60-80 ℃ for 3-8 min and baking at 120 ℃ for 5-10 min; and the thickness of the luminescent coating in the luminescent coating / nylon composite fabric is 10-100 μm.

[0022] Preferably, in the step (1), when the modified nylon fabric is prepared, in S11, the bath ratio of the nylon fabric to the aqueous [BMIM]Cl ionic liquid solution is 1:15-20; the aqueous [BMIM]Cl ionic liquid solution is an aqueous 40 wt% [BMIM]Cl ionic liquid solution; the immersion conditions are immersion at 40-60 ℃ for 10-20 min; and the washing operation is washing with water until the conductivity is <50 μS / cm.

[0023] Preferably, in the step (1), when the modified nylon fabric is prepared, in S12, the concentration of Zn(TFSI)2 in the zinc-ionic liquid composite solution is 0.3 mol / L.

[0024] Preferably, in the step (1), when the modified nylon fabric is prepared, in S12, the coating operation is coating by the roll coating process, the number of coating times is two, the amount of the carrier liquid for each coating is 15-30 g / m 2 , and the heat curing conditions are heat curing at 110-120 ℃ for 10-30 min.

[0025] Preferably, in the step (1), when the modified nylon fabric is prepared, in S13, the bath ratio of the zinc-ionic liquid composite modified nylon fabric to the VTMS-containing ethanol / water solution is 1:15; in the VTMS-containing ethanol / water solution, the content of VTMS is 1-5 vol%, the content of ethanol is 60-90 vol%, and the pH value is 4-5; the reaction conditions are reaction at room temperature for 30 min; and the curing conditions are pre-baking at 90 ℃ for 15 min and heat curing at 120 ℃ for 30 min.

[0026] Preferably, in the step (2), the amount of the hot melt adhesive is 8-15 g / m 2; the hot pressing condition is: hot pressing for 1.5-2 min under the pressure of 2-3 Mpa and the temperature of 100-120 DEG C.

[0027] Preferably, in the preparation of the hydrophobized silica / polyurethane waterproof and moisture-permeable film in step (2), in S21, the molar ratio of HDI trimer and N-[3-(trimethoxysilyl)propyl]n-butylamine is 1:2; the reaction condition is: reaction for 6-8 h under the nitrogen atmosphere, the rotation speed of 250-350 r / min and the temperature of 0 DEG C.

[0028] Preferably, in the preparation of the hydrophobized silica / polyurethane waterproof and moisture-permeable film in step (2), in S22, the polyurethane spinning solution contains 15-16% polyurethane, 6-8% crosslinking agent and 0.5-1% catalyst in terms of the mass percentage, and the rest is mixed solvent; the volume ratio of N,N-dimethylformamide and butyl acetate in the mixed solvent is 4:6; the reaction condition is: reaction for 8-12 h under the temperature of 55-60 DEG C.

[0029] Preferably, in the preparation of the hydrophobized silica / polyurethane waterproof and moisture-permeable film in step (2), in S23, the electrostatic spinning operation is: spinning through the electrostatic spinning instrument under the conditions of using release film as the receiving screen, the temperature of 24-28 DEG C, the relative humidity of 26-30%, the spinning speed of 2 mL / min, the spinning voltage of 23-25 kV and the receiving distance of 23-25 cm.

[0030] Preferably, in the preparation of the hydrophobized silica / polyurethane waterproof and moisture-permeable film in step (2), in S24, the bath ratio of the polyurethane waterproof and moisture-permeable film to the ethanol aqueous solution is 1:10-15; the reaction condition is: stirring reaction for 2-3 h under the temperature of 50 DEG C; the continuous reaction condition is: continuous reaction for 3-5 h under the temperature of 50 DEG C; the volume ratio of the ethanol aqueous solution, ammonia water, tetraethyl orthosilicate and perfluorodecyltrimethoxysilane is 100:4-4.5:2:0.1-0.2; the ethanol aqueous solution is 75 wt% ethanol aqueous solution; the ammonia water is 25 wt% ammonia water.

[0031] Preferably, the energy storage and temperature adjustment luminescent composite fabric is prepared by the preparation method of the energy storage and temperature adjustment luminescent composite fabric.

[0032] Preferably, the energy storage and temperature adjustment luminescent composite fabric is applied in the field of outdoor fabric.

[0033] Compared with the prior art, the energy storage and temperature adjustment luminescent composite fabric has the following beneficial effects:

[0034] 1. This invention utilizes an ionic liquid and zinc composite to form a functional film on the surface of nylon fibers, enhancing the fibers' thermal radiation performance and cooling effect. Specifically, the ionic liquid [BMIM]Cl effectively dissolves the amorphous regions of the nylon fibers, thereby increasing the penetration depth of zinc ions. The addition of zinc helps improve the thermal radiation capacity of the composite film, especially under high-temperature conditions, effectively reflecting and scattering heat to achieve a cooling effect. A stable film layer is formed through thermosetting treatment, achieving the effect of enhanced thermal radiation and reduced fabric temperature.

[0035] The fabric treated with ionic liquid and zinc composite is then surface-treated with vinyltrimethoxysilane (VTMS). The carbon-carbon double bonds in VTMS can undergo hydrosilylation with the hydrogen groups of PDMS in the luminescent coating under the condition of platinum catalyst, so that the luminescent coating is tightly bonded to the fabric, and finally achieves the effect of energy storage, temperature regulation and luminescence of the fabric.

[0036] This invention utilizes a mixture of luminescent powder, PDMS, curing agent, tetraethyl orthosilicate, pore-forming agent ammonium aminocarbonate, pore-forming agent water, and solvent to prepare a luminescent coating. After curing, the luminescent coating has a microporous structure, giving the fabric good breathability and moisture permeability.

[0037] 2. Waterproof and breathable membranes possess both the properties of resisting liquid water penetration and allowing water vapor to permeate. Introducing them into layered composite fabrics can improve the wearing comfort of the composite fabric. This invention involves reacting HDI trimer with N-[3-(trimethoxysilyl)propyl]n-butylamine to obtain a crosslinking agent containing trimethoxysilane segments and isocyanate groups. This agent is then introduced into the polyurethane spinning solution, where the isocyanate groups react with urethane groups under the catalysis of triethylamine, causing the crosslinking agent to graft onto the polyurethane molecular chains. In the polyurethane waterproof and breathable membrane formed after electrospinning, the low-polarity silane segments, located on the side chains of the polyurethane molecular chains, migrate and accumulate more easily to the fiber surface, thereby improving the hydrophobicity and water resistance of the polyurethane waterproof and breathable membrane.

[0038] 3. This invention introduces perfluorodecyltrimethoxysilane into the preparation process of silica, using a polyurethane waterproof and breathable membrane as a carrier to generate hydrophobic silica in situ on its surface. Furthermore, since the trimethoxysilane in the polyurethane waterproof and breathable membrane forms hydroxyl groups after hydrolysis, it has a coupling effect with the hydrophobic silica, making the hydrophobic silica more firmly bonded to the surface of the polyurethane waterproof and breathable membrane, resulting in a better waterproof effect. In addition, silica has a resonance effect, which can radiate heat to the external cold source in the form of infrared rays to achieve the purpose of temperature regulation, thereby working synergistically with the luminescent layer to produce a better temperature regulation effect on the composite fabric. Attached Figure Description

[0039] Figure 1 This is a SEM image of the nylon base fabric and the luminous coating / nylon composite fabric in this invention;

[0040] Figure 2 is the water contact angle of the side with the noctilucent coating of the noctilucent coating / nylon composite fabric in the present application;

[0041] Figure 3 is the excitation emission spectrum diagram of Example 1 and Comparative Example 1 in the present application;

[0042] Figure 4 is the excitation emission spectrum diagram of Examples 1-3 in the present application;

[0043] Figure 5 is the luminous intensity diagram of Sample 1 prepared in Example 5 in the present application;

[0044] Figure 6 is the night shooting effect diagram of Sample 1 prepared in Example 5 in the present application at a distance of 50 m, wherein the size of Sample 1 is 15 cm x 10 cm. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0046] Example 1

[0047] The present embodiment discloses a preparation method of a noctilucent coating / nylon composite fabric, comprising the following steps:

[0048] The noctilucent coating was prepared by mixing 30% of noctilucent powder, 8% of PDMS, 3% of curing agent Kast catalyst, 5% of tetraethyl orthosilicate, 6% of pore-forming agent ammonium carbamate, 3% of pore-forming agent water, and the rest of ethyl acetate in mass percentage;

[0049] The noctilucent coating was coated on one side of the modified nylon fabric by air spraying method. After coating, a noctilucent coating was formed. The coating was pre-baked at 60°C for 3 min and baked at 120°C for 8 min. After baking, the coating was cooled to room temperature to obtain a noctilucent coating / nylon composite fabric.

[0050] The noctilucent powder is strontium aluminate; the thickness of the noctilucent coating is 80 μm; the conditions of the air spraying method are: pressure 0.3 MPa, nozzle diameter 0.5 mm;

[0051] The modified nylon fabric was prepared by the following steps:

[0052] Step (1), the nylon fabric is immersed in 40wt% [BMIM]Cl (1-butyl-3-methyl imidazole chloride) aqueous solution of ionic liquid, the bath ratio is 1:15, the immersion is carried out at 50℃ for 20 min, after the completion of the immersion, water washing is carried out until the conductivity is less than 50 μS / cm, and drying is carried out at 50℃ to obtain the nylon fabric treated by ionic liquid;

[0053] Step (2), Zn(TFSI)2 (zinc bis-trifluoromethylsulfonylimide salt) is added into [EMIM]Ac (1-ethyl-3-methyl imidazole acetate) ionic liquid at room temperature, and the mixture is stirred and uniformly mixed to obtain a zinc-ionic liquid composite solution;

[0054] In the zinc-ionic liquid composite solution, the concentration of Zn(TFSI)2 is 0.3 mol / L;

[0055] The zinc-ionic liquid composite solution is coated on both sides of the nylon fabric treated by ionic liquid by using a roll coating process, the coating times are two, the liquid load of each coating is 20 g / m 2 After the coating is completed, heat curing is carried out at 120℃ for 20 min, after the completion of the curing, cooling is carried out to room temperature, and drying is carried out to obtain a zinc-ionic liquid composite modified nylon fabric;

[0056] Step (3), the zinc-ionic liquid composite modified nylon fabric is soaked in an ethanol / water solution containing VTMS, the bath ratio is 1:15, the reaction is carried out at room temperature for 30 min, after the completion of the reaction, the fabric is taken out, pre-drying is carried out at 90℃ for 15 min, and heat curing is carried out at 120℃ for 30 min to obtain a modified nylon fabric;

[0057] In the ethanol / water solution containing VTMS, the content of VTMS is 3vol%, the content of ethanol is 83vol%, and the pH value is 4-5.

[0058] Example 2

[0059] The difference from example 1 is that the added amount of the night light powder is 20%, and other parameters and conditions are the same as those in example 1.

[0060] Example 3

[0061] The difference from example 1 is that the added amount of the night light powder is 15%, and other parameters and conditions are the same as those in example 1.

[0062] Example 4

[0063] The embodiment discloses a preparation method of a hydrophobized silica / polyurethane waterproof and moisture-permeable film, comprising the following steps:

[0064] Step (1), mixing HDI trimer and N,N-dimethylformamide with a mass ratio of 1:3, adding N-[3-(trimethoxysilyl)propyl]n-butylamine, and reacting at 0℃ under a nitrogen atmosphere at a rotation speed of 250 r / min for 8 h, to obtain a crosslinking agent;

[0065] The molar ratio of HDI trimer and N-[3-(trimethoxysilyl)propyl]n-butylamine is 1:2.

[0066] Step (2), uniformly mixing N,N-dimethylformamide and butyl acetate with a volume ratio of 4:6 to obtain a mixed solvent, uniformly stirring polyurethane at 30℃, adding the crosslinking agent and the catalyst triethylamine, and reacting at 55℃ for 12 h, to obtain a polyurethane spinning solution.

[0067] The polyurethane spinning solution contains 15% polyurethane, 8% crosslinking agent, and 1% catalyst by mass percentage, and the rest is the mixed solvent.

[0068] Step (3), loading the spinning solution into a syringe of an electrospinning device, using a release film as a receiving screen, and spinning through the electrospinning instrument under the conditions of a temperature of 24℃, a relative humidity of 26%, a spinning rate of 2 mL / min, a spinning voltage of 23 kV, and a receiving distance of 25 cm, to form a fiber membrane.

[0069] Step (4), placing the polyurethane waterproof and moisture-permeable membrane in a 75wt% ethanol aqueous solution, with a bath ratio of 1:10, adding 25wt% ammonia water, dropwise adding tetraethyl orthosilicate at 50℃, stirring for 2 h, adding perfluorodecyltrimethoxysilane at 50℃, and continuing to react for 5 h, cooling to room temperature after the reaction is completed, washing with water and ethanol, and drying at 50℃ for 24 h, to obtain a hydrophobized silica / polyurethane waterproof and moisture-permeable membrane.

[0070] The volume ratio of the 75wt% ethanol aqueous solution, the 25wt% ammonia water, the tetraethyl orthosilicate, and the perfluorodecyltrimethoxysilane is 100:4:2:0.1.

[0071] Example 5

[0072] The embodiment discloses a preparation method of an energy storage temperature-regulating noctilucent composite fabric, which comprises the following steps:

[0073] The hydrophobized silica / polyurethane waterproof and moisture-permeable membrane prepared in Example 4 is coated with hot melt adhesive on one side by using a dispensing process, and the adhesive amount is 10 g / m 2The coated side of the hydrophobic silica / polyurethane waterproof and breathable membrane prepared in Example 4 was bonded to the side of the luminous coating / nylon composite fabric prepared in Examples 1-3 that did not have the luminous coating. The two sides were hot-pressed at a pressure of 3 MPa and a temperature of 100°C for 2 minutes to obtain the energy storage temperature regulation luminous composite fabric, which was denoted as Sample 1-3.

[0074] Comparative Example 1

[0075] The difference from Example 1 is that the PDMS and curing agent in the luminescent coating are replaced with polyacrylate binder; all other parameters and conditions are the same as in Example 1.

[0076] Comparative Example 2

[0077] The difference from Example 4 is that the luminescent coating / nylon composite fabric prepared in Comparative Example 1 is used. All other parameters and conditions are the same as in Example 4, and it is referred to as Sample 4.

[0078] Comparative Example 3

[0079] This comparative example discloses a method for preparing a polyurethane waterproof and breathable membrane, comprising the following steps:

[0080] Step (1): Mix N,N-dimethylformamide and butyl acetate at a volume ratio of 4:6 to obtain a mixed solvent. Add polyurethane and stir evenly at 30°C to obtain a polyurethane spinning solution.

[0081] The polyurethane spinning solution contains 15% polyurethane by mass percentage, with the remainder being a mixed solvent.

[0082] Step (3): Load the spinning solution into the syringe of the electrospinning equipment, use the release film as the receiving screen, and spin the fibers through the electrospinning instrument under the conditions of temperature 24℃, relative humidity 26%, spinning rate 2mL / min, spinning voltage 23kV, and receiving distance 25cm. After spinning, a fiber membrane is formed. Peel off the fiber membrane, lay it flat and dry it until the solvent evaporates completely to obtain a polyurethane waterproof and breathable membrane.

[0083] Comparative Example 4

[0084] This comparative example discloses a method for preparing an energy-storing, temperature-regulating, luminous composite fabric, comprising the following steps:

[0085] Hot melt adhesive was applied to one side of the polyurethane waterproof and breathable membrane prepared in Comparative Example 3 using a dispensing process, with an adhesive application rate of 10 g / m². 2 The coated side of the polyurethane waterproof and breathable membrane prepared in Comparative Example 3 was bonded to the side of the luminous coating / nylon composite fabric prepared in Example 1 that did not have a luminous coating. The two sides were hot-pressed at a pressure of 3 MPa and a temperature of 100°C for 2 minutes to obtain an energy storage temperature-regulating luminous composite fabric, which was designated as Sample 5.

[0086] In the above examples and comparative examples: the nylon fabric is a stretch fabric woven from nylon low stretch yarn, 96wt% nylon, 4wt% spandex; the PDMS is hydrogen-terminated polydimethylsiloxane, with a hydrogen content of 0.1-0.3wt%; the VTMS silane coupling agent is vinyltrimethylsilane, with a CAS number of 754-05-2; the hot melt adhesive is a commercially available hot melt adhesive for textiles; the HDI trimer is a Wanhua HT-100 curing agent; the N-[3-(trimethoxysilyl)propyl]n-butylamine has a CAS number of 31024-56-3; the polyurethane is from Shanghai Jingjian Plastics Co., Ltd., with a brand Elastollan 1180A; the perfluorodecyltrimethoxysilane has a CAS number of 83048-65-1; and the polyacrylate adhesive is a commercially available polyacrylate adhesive for textiles.

[0087] Experimental data characterization and performance testing

[0088] (1) The performance of the luminescent coating / nylon composite fabric prepared in Examples 1-3 and Comparative Example 1 was tested, and the specific test results are shown in Table 1.

[0089] Table 1

[0090]

[0091]

[0092] The detection of each index in Table 1 was based on the following standards: water color fastness was determined according to GB / T5713-2013 “Textile Color Fastness Test for Water Color Fastness”; acid sweat stain color fastness and alkali sweat stain color fastness were determined according to GB / T3922-2013 “Textile Color Fastness Test for Sweat Stain Color Fastness”; wet rubbing color fastness was determined according to GB / T3920-2008 “Textile Color Fastness Test for Rubbing Color Fastness”; and moisture permeability was tested using a fabric moisture permeability tester according to GB / T 12704.1 “Textile Fabric Moisture Permeability Test Method Part 1: Hygroscopic Method”, and the calculation method for moisture vapor transmission rate (WVT) was: WVT = (M1-M2) / A x 24; wherein M1-M2 is the difference in weight before and after testing, i.e. the evaporation mass of liquid within 1h; A is the effective area during the test, and the unit of WVT is kg / m 2 / d.

[0093] From the test results of Table 2, it can be seen that the luminous coating / nylon composite fabric prepared in the application has high color fastness, which is due to the fact that the PDMS chain segment in the coating is firmly grafted onto the surface of the nylon fiber modified by VTMS silane coupling through a silicon hydrogen addition reaction, forming a stable chemical bonding interface, so that the coating and the substrate have high bonding strength and washing resistance; the good moisture permeability is due to the fact that amino ammonium carbonate is introduced as a pore former in the slurry, which decomposes to produce gas during the curing process, building a uniformly distributed microporous moisture permeable channel.

[0094] (2) Performance tests were conducted on Example 4 and Comparative Example 3, and the specific test results are shown in Table 2:

[0095] Table 2

[0096] Example 4 Comparative Example 3 Air permeability (mm / s) 8.7 10.1 moisture permeability (kg / m 2 / d) 98 10.2 Water contact angle (°) 154 118

[0097] The detection of each index in Table 2 is based on the following standards: the air permeability is tested according to GB / T5453 "Determination of Air Permeability of Textile Fabrics" using a full-automatic air permeability tester, the area of the sample is 20 cm 2 , and the pressure difference is 100 Pa; the moisture permeability is tested according to GB / T 12704.1 "Textile fabric moisture permeability test method Part 1: hygroscopic method" using a fabric moisture permeability tester, and the calculation method of the moisture permeability (WVT) is: WVT = (M1-M2) / A x 24; wherein M1-M2 is the difference between the pre-test and post-test weights, i.e. the evaporation mass of liquid within 1 h; A is the effective area during the test, and the unit of WVT is kg / m 2 / d; the water contact angle is tested at room temperature using a dynamic and static contact angle instrument.

[0098] From the test results of Table 2, it can be seen that the polyurethane waterproof and moisture permeable film prepared in the application has good waterproof performance, good air permeability and moisture permeability, which is due to the fact that the waterproof and moisture permeable film is prepared by electrospinning, and has fine and interconnected channels inside, which can resist the penetration of liquid water and also serve as a pathway for water vapor and air transmission, so that the waterproof and moisture permeable film has excellent waterproof, air permeable and moisture permeable performance. The air permeability and moisture permeability of Example 4 are not as good as those of Comparative Example 3, which is due to the fact that hydrophobic silicon dioxide is generated in situ on the surface of the polyurethane waterproof and moisture permeable film in Example 4, resulting in a decrease in the pore size between fibers, thereby reducing the air permeability and moisture permeability of Example 4, but due to the presence of hydrophobic silicon dioxide, the water contact angle of Example 4 is greater than that of Comparative Example 3, and the waterproof performance is improved.

[0099] (3) Performance tests were conducted on Sample 1-3 prepared in Example 5 and Sample 4 prepared in Comparative Example 2, and Sample 5 prepared in Comparative Example 4, and the specific test results are shown in Table 2:

[0100] Table 2

[0101] Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Hydrostatic pressure (kPa) 8.1 8.0 7.9 8.0 2.1

[0102] The detection of each index in Table 2 is respectively based on the following standard: hydrostatic pressure reference AATCC127-2017 "water resistance: hydrostatic pressure method", and the static pressure water permeability tester is used to test the side of the sample with the polyurethane waterproof and moisture permeable film.

[0103] It can be known from the test results in Table 2 that the prepared energy storage temperature regulating and night light composite fabric has good waterproof and water resistance. This is because the hydrophobic silica in the waterproof and moisture permeable film and the silane segment in the crosslinking agent can both improve the water resistance, so the composite fabric has excellent water resistance.

[0104] In sample 5, the polyurethane waterproof and moisture permeable film does not add a crosslinking agent, and no hydrophobic silica is generated in situ, so the water resistance of the fabric is reduced. This is because the effect of the hydrophobic silica and the silane segment in the crosslinking agent on improving the water resistance of the waterproof and moisture permeable film is lacking, so the water resistance of sample 5 is not as good as that of samples 1-4.

[0105] Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for preparing an energy-storing, temperature-regulating, luminous composite fabric, characterized in that, Includes the following steps: Step (1): Mix phosphorescent powder, PDMS, curing agent, tetraethyl orthosilicate, pore-forming agent ammonium aminocarbonate, pore-forming agent water, and solvent evenly to obtain phosphorescent coating; A luminescent coating is applied to one side of a modified nylon fabric. After the coating is applied, a luminescent coating is formed. The fabric is then baked and cooled to obtain a luminescent coating / nylon composite fabric. Among them, modified nylon fabric It is prepared by the following steps: S11. Immerse the nylon fabric in an aqueous solution of [BMIM]Cl ionic liquid. After immersion, wash and dry to obtain the nylon fabric treated with ionic liquid. S12. The zinc-ionic liquid composite solution is coated on both sides of the nylon fabric treated with ionic liquid. After coating, it is heat-cured. After curing, it is cooled to obtain zinc-ionic liquid composite modified nylon fabric. S13. The zinc-ion liquid composite modified nylon fabric is surface treated with VTMS silane to obtain the modified nylon fabric. Step (2): Apply adhesive to one side of the hydrophobic silica / polyurethane waterproof and breathable membrane, and bond it to the side of the luminous coating / nylon composite fabric that does not have a luminous coating. Then, heat press to obtain the energy storage and temperature regulation luminous composite fabric.

2. The method for preparing an energy storage, temperature regulation, and luminous composite fabric according to claim 1, characterized in that, In step (1): by mass percentage, the luminescent coating contains 15-50% luminescent powder, 3-10% PDMS, 0.75-7.5% curing agent (Cast catalyst), 5-10% tetraethyl orthosilicate, 5-15% pore-forming agent (ammonium aminocarbonate), 3-10% pore-forming agent (water), and the balance is solvent (ethyl acetate); the luminescent powder is any one or a mixture of two of strontium aluminate and magnesium strontium silicate.

3. The method for preparing an energy storage, temperature regulation, and luminous composite fabric according to claim 1, characterized in that, In step (1): the spraying method is air spraying, the pressure is 0.1-0.7MPa, and the nozzle diameter is 0.3-1mm; the baking conditions are: pre-baking at 60-80℃ for 3-8min, and baking at 120℃ for 5-10min; in the luminous coating / nylon composite fabric, the thickness of the luminous coating is 10-100μm.

4. The method for preparing an energy storage, temperature regulation, and luminous composite fabric according to claim 1, characterized in that, In step (1), when preparing the modified nylon fabric, in S11: The bath ratio of nylon fabric to [BMIM]Cl ionic liquid aqueous solution is 1:15-20; the [BMIM]Cl ionic liquid aqueous solution is 40wt% [BMIM]Cl ionic liquid aqueous solution; the immersion conditions are: immersion at 40-60℃ for 10-20min; the washing operation is: washing with water until the conductivity is <50μS / cm.

5. The method for preparing an energy storage, temperature regulation, and luminous composite fabric according to claim 1, characterized in that, In step (1), when preparing the modified nylon fabric: In S12: The zinc-ionic liquid complex solution is prepared by the following steps: at room temperature, Zn(TFSI)2 (zinc bis(trifluoromethanesulfonyl)imide salt) is added to [EMIM]Ac (1-ethyl-3-methylimidazolium acetate) ionic liquid and stirred until homogeneous to obtain the zinc-ionic liquid complex solution; in the zinc-ionic liquid complex solution, the concentration of Zn(TFSI)2 is 0.3 mol / L; The coating process is as follows: roller coating is used, with two coating passes, and the liquid loading for each coat is 15-30 g / m³. 2 The thermosetting conditions are: heat curing at 110-120℃ for 10-30 minutes; In S13: the ratio of zinc-ionic liquid composite modified nylon fabric to VTMS-containing ethanol / water solution is 1:15; the VTMS content in the VTMS-containing ethanol / water solution is 1-5 vol%, and the ethanol content is 60-90 vol%; the pH value is 4-5; the reaction conditions are: reaction at room temperature for 30 min; the curing conditions are: pre-baking at 90℃ for 15 min, and heat curing at 120℃ for 30 min.

6. The method for preparing an energy storage, temperature regulation, and luminous composite fabric according to claim 1, characterized in that, In step (2): the amount of adhesive applied is 8-15 g / m 2 The hot pressing conditions are: hot pressing for 1.5-2 minutes at a pressure of 2-3 MPa and a temperature of 100-120℃.

7. The method for preparing an energy storage, temperature regulation, and luminous composite fabric according to claim 1, characterized in that, The hydrophobic silica / polyurethane waterproof and breathable membrane in step (2) is prepared by the following steps: S21. Mix HDI trimer with N,N-dimethylformamide, add N-[3-(trimethoxysilyl)propyl]n-butylamine, react, and after the reaction is complete, obtain a crosslinking agent; S22. N,N-dimethylformamide and butyl acetate are mixed evenly to obtain a mixed solvent. Polyurethane is added and stirred evenly. Crosslinking agent and catalyst triethylamine are added and reacted. After the reaction is completed, polyurethane spinning solution is obtained. S23. Load the spinning solution into the syringe of the electrospinning equipment, perform electrospinning, and after spinning is completed, a fiber membrane is formed. Peel off the fiber membrane, lay it flat and air dry until the solvent evaporates completely to obtain a polyurethane waterproof and breathable membrane. S24. Place the polyurethane waterproof and breathable membrane in an ethanol aqueous solution, add ammonia, add tetraethyl orthosilicate dropwise, stir to react, after the reaction is complete, add perfluorodecyltrimethoxysilane to continue the reaction, after the reaction is complete, cool, wash, and dry to obtain hydrophobic silica / polyurethane waterproof and breathable membrane.

8. The method for preparing an energy storage, temperature regulation, and luminous composite fabric according to claim 1, characterized in that, In step (2), when preparing the hydrophobic silica / polyurethane waterproof and breathable membrane: In S21, the molar ratio of HDI trimer to N-[3-(trimethoxysilyl)propyl]n-butylamine is 1:2; the reaction conditions are: under a nitrogen atmosphere, at a rotation speed of 250-350 r / min and a temperature of 0℃ for 6-8 h. In S22: by mass percentage, the polyurethane spinning solution contains 15-16% polyurethane, 6-8% crosslinking agent, 0.5-1% catalyst, and the remainder is a mixed solvent; the volume ratio of N,N-dimethylformamide to butyl acetate in the mixed solvent is 4:6; the reaction conditions are: reaction at 55-60℃ for 8-12 hours; In S23: the electrospinning operation is as follows: using a release film as the receiving screen, spinning is carried out through an electrospinning instrument under the conditions of temperature 24-28℃, relative humidity 26-30%, spinning rate 2mL / min, spinning voltage 23-25kV, and receiving distance 23-25cm. In S24: the bath ratio of polyurethane waterproof and breathable membrane to ethanol aqueous solution is 1:10-15; the reaction conditions are: stirring at 50℃ for 2-3 hours; the reaction conditions for continued reaction are: continuing the reaction at 50℃ for 3-5 hours; the volume ratio of ethanol aqueous solution, ammonia, tetraethyl orthosilicate, and perfluorodecyltrimethoxysilane is 100:4-4.5:2:0.1-0.2; the ethanol aqueous solution is 75wt% ethanol aqueous solution; the ammonia is 25wt% ammonia.

9. An energy-storage temperature-regulating luminous composite fabric prepared by the preparation method of the energy-storage temperature-regulating luminous composite fabric as described in any one of claims 1-8.

10. An application of the energy storage, temperature regulation, and luminous composite fabric as described in claim 9 in the field of outdoor fabrics.

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