A method for processing silk fibroin-based fabric with personal thermal and moisture management capability

Abstract

The application relates to a silk fibroin-based fabric processing method with personal heat and moisture management capability, and belongs to the technical field of functional textile processing. The prepared silk fibroin-based fabric with personal heat and moisture management capability comprises, from outside to inside, a fabric A layer, a fabric B layer and a heptadecafluorodecyltrimethoxysilane coating layer; the fabric A layer is a silk fibroin fiber containing nano-aluminum oxide and polyethylene oxide, and the fabric B layer is a silk fibroin fiber containing nano-boron nitride. The prepared heat and moisture management silk fibroin-based fabric adopts nano-aluminum oxide to enhance the sunlight reflectivity of the fabric, adopts nano-boron nitride to improve the heat conductivity coefficient of the fabric in the vertical direction and the parallel direction, realizes excellent directional sweat-releasing effect by using the fiber diameter, pore distribution and wettability gradient difference of each layer, has excellent biodegradability, has service comfort, and realizes cooling in an outdoor high-temperature environment.

Description

TECHNICAL FIELD

[0001] The application relates to a silk fibroin-based fabric processing method with personal heat and moisture management capability, and belongs to the technical field of functional textile processing. BACKGROUND

[0002] In recent years, due to global warming, the energy demand for refrigeration is increasing, which causes serious environmental problems such as greenhouse effect and ozone hole. Traditional textiles cannot meet the urgent cooling demand of people in outdoor high-temperature environment due to the lack of personal heat and moisture management function, which easily leads to various high-temperature diseases. In view of this problem, many researchers focus on strengthening the reflection of sunlight (0.5-2.5 μm), transmitting human infrared thermal radiation (7-14 μm) to the cold outer space close to absolute zero through the atmospheric window (8-13 μm), and other ways to realize the construction of wearable passive cooling textiles. At present, passive cooling textile products mainly focus on the adjustment of personal micro-environmental thermal comfort. In the outdoor high-temperature environment (> 35℃), through strengthening the evaporation of sweat to replace heat conduction and heat radiation, which is also the main way of heat dissipation and cooling of human body. In this high-temperature scene, if the sweat cannot be evaporated in time through the clothes, but accumulates on the surface of the human body, it will lead to the decrease of wearing comfort. Therefore, the rapid evaporation of sweat is also an important aspect for the design of passive cooling textiles.

[0003] Introducing nanoparticles with high infrared vibration into fibers and constructing a porous layered structure is the most commonly used method to manufacture passive cooling textiles with radiative cooling capability. The specific implementation methods include impregnation of coupled nanoparticles, in-situ growth of nanoparticles, functional coating of nanoparticles, etc. By depositing nanoparticles on the surface of fibers, the method has the advantage of convenience, but the disadvantage is that it will reduce the inherent air permeability and hand feeling of the textile. In recent years, the preparation of nanofibers by melt spinning or wet spinning has gradually attracted attention for the preparation of textiles with radiative cooling function. In addition, designing a wetting gradient and manufacturing a layered structure are also common ways to prepare heat and moisture management textiles with directional sweat. Specific methods include lamination, chemical coating, spray modification, ion plasma treatment and weaving of special structures. In the construction of the above cool textiles, due to the limitation of the cross-sectional wettability gradient or the small change of porosity of the fiber product, there are many problems such as insufficient driving force in the wet process and low efficiency of sweat transport. At present, in the design and processing of passive cooling textiles, there is still a lack of efficient processing methods that combine multiple passive cooling strategies such as rapid heat conduction and radiative cooling. The comprehensive cooling efficiency of most cool fabrics is not ideal, and some cool fabrics based on synthetic fibers also have the problem of poor biodegradability. SUMMARY

[0004]

Technical problem

[0005] The current passive cooling textiles have low sweat transport efficiency, unsatisfactory comprehensive cooling efficiency and poor biodegradability, and thus an air-cooled fabric with biodegradability and high efficient radiation cooling and sweat management capacity is urgently needed.

[0006] Technical scheme

[0007] To solve the above technical problems, the application provides a silk fibroin-based fabric processing method with personal heat and humidity management capacity, improves the heat and humidity management capacity of the silk fibroin-based nanofiber fabric, realizes the preparation of passive cooling textiles with renewable, degradable and excellent biocompatibility, and endows the silk fibroin-based fabric with durable dry and cool performance. While improving the wearing comfort of the silk fibroin-based fabric, the cooling demand of people in outdoor high-temperature environment is met.

[0008] In the application, formic acid is used as a solvent to dissolve silk fibroin, and nano-aluminum oxide is added to spin the fabric A layer with a fine fiber appearance; then, hexafluoroisopropanol is used as a solvent to dissolve silk fibroin, and nano-boron nitride is added to spin the fabric B layer with a coarse fiber appearance; the prepared silk fibroin-based fabric is alcoholized to induce the silk fibroin to transform from an amorphous structure to a β-structure, so as to improve the structural stability of the fiber; finally, the surface of the fabric B layer is subjected to hydrophobic treatment, so that the silk fibroin-based fabric forms a hydrophilic-hydrophobic wetting gradient, and the silk fibroin-based fabric with radiation cooling capacity and double sweat driving force is prepared.

[0009] The first object of the application is to provide a silk fibroin-based fabric with personal heat and humidity management capacity (referred to as heat and humidity management silk fibroin-based fabric), which comprises, from outside to inside, a fabric A layer, a fabric B layer and a heptadecafluorodecyltrimethoxysilane coating layer; the fabric A layer is a silk fibroin fiber containing nano-aluminum oxide and polyethylene oxide, and the fabric B layer is a silk fibroin fiber containing nano-boron nitride.

[0010] In an embodiment of the application, the fabric A layer has a fine fiber appearance (fiber diameter 0.1-0.2 μm), and the fabric B layer has a coarse fiber appearance (fiber diameter 0.8-1 μm).

[0011] In an embodiment of the application, the thickness of the fabric A layer is 100-200 μm, and the thickness of the fabric B layer is 100-200 μm.

[0012] When worn, the heptadecafluorodecyltrimethoxysilane coating layer of the heat and humidity management silk fibroin-based fabric is close to the human body and is the inner layer, and the fabric A layer is directed to sunlight and is the outer layer.

[0013] The second object of the application is to provide a processing method of the heat and humidity management silk fibroin-based fabric, which comprises the following steps:

[0014] (1) Fabric A layer spinning construction: nano-alumina, polyethylene oxide are added into formic acid solvent and ultrasonic dispersed, silk fibroin is added, dissolved to prepare fabric A layer spinning solution, electrospinning to prepare fabric A layer;

[0015] (2) Fabric B layer spinning construction: nano-boron nitride is added into hexafluoroisopropanol solvent and ultrasonic dispersed, silk fibroin is added, dissolved to prepare fabric B layer spinning solution, electrospinning on the surface of fabric A layer to form fabric B layer, to obtain silk fibroin-based fabric;

[0016] (3) Alcoholization and hydrophobization treatment: the silk fibroin-based fabric is soaked in anhydrous methanol, naturally air-dried, then 1-heptadecafluorodecyltrimethoxysilane ethanol solution is sprayed on the surface of fabric B layer, to obtain moisture management silk fibroin-based fabric.

[0017] In an embodiment of the present application, the extraction method of silk fibroin used in step (1) is as follows: after degumming, the silk fiber is dissolved by using a ternary system of anhydrous calcium chloride / ethanol / water, dialysis and freeze-drying are performed, and then silk fibroin is obtained.

[0018] In an embodiment of the present application, in the extraction method of silk fibroin, the mass ratio of CaCl2, EtOH and H2O in the ternary system of anhydrous calcium chloride / ethanol / water is 1:2:8, the mass ratio of silk fiber to the ternary system of anhydrous calcium chloride / ethanol / water is 1:8-1:12, the temperature of the dissolution treatment is 70-80℃, and the time of the dissolution treatment is 3-5h.

[0019] In an embodiment of the present application, in the extraction method of silk fibroin, the mass ratio of silk fiber to the ternary system of anhydrous calcium chloride / ethanol / water is preferably 1:10.

[0020] In an embodiment of the present application, in step (1), the particle size of nano-alumina is 30-40nm; the molecular weight of polyethylene oxide is 8000-12000.

[0021] In an embodiment of the present application, in step (1), the mass fraction of silk fibroin in the fabric A layer spinning solution is 12-18wt%, the mass fraction of nano-alumina is 4-6wt%, and the mass fraction of polyethylene oxide is 0.8-1wt%.

[0022] In an embodiment of the present application, in step (1), the parameters of electrospinning are as follows: power voltage is 18-22kV, the injection pump injection speed is 0.8-1mL / h, the collection roller winding speed is 350-450rad / min, the collection distance is 13-17cm, and the collection thickness is 150-200μm.

[0023] In an embodiment of the present application, in step (2), the method for preparing the nano boron nitride comprises adding hexagonal boron nitride into a sodium dodecyl sulfonate solution, and removing salt by ultrasonic treatment and deionized water dialysis to obtain the nano boron nitride.

[0024] In an embodiment of the present application, in the method for preparing the nano boron nitride, the mass concentration of the sodium dodecyl sulfonate solution is 0.5-1.5 g / L; the addition amount of the hexagonal boron nitride relative to the sodium dodecyl sulfonate solution is 10-15 g / L; and the ultrasonic treatment time is 3-5 h.

[0025] In an embodiment of the present application, in step (2), the particle size of the nano boron nitride is 200-400 nm.

[0026] In an embodiment of the present application, in step (2), the mass fraction of the silk fibroin in the spinning solution of the fabric B layer is 6-8 wt%, and the mass fraction of the nano boron nitride is 40-50 wt%.

[0027] In an embodiment of the present application, in step (2), the electrospinning parameters are as follows: the power supply voltage is 8-10 kV, the injection pump injection speed is 2.2-2.4 mL / h, the collection roller winding speed is 180-220 rad / min, the collection distance is 7-9 cm, and the collection thickness is 150-200 μm.

[0028] In an embodiment of the present application, in step (3), the soaking time is 15-25 min.

[0029] In an embodiment of the present application, in step (3), the mass fraction of the heptadecafluorodecyltrimethoxysilane in the heptadecafluorodecyltrimethoxysilane ethanol solution is 2-3 wt%.

[0030] In an embodiment of the present application, in step (3), the distance between the nozzle and the fabric B layer (i.e. the spraying distance) is 20-30 cm.

[0031] A third object of the present application is to provide the use of the above-mentioned moisture and heat management silk fibroin-based fabric in functional textiles.

[0032] Advantages:

[0033] Compared with the cool finishing of traditional nanofiber textiles, the moisture and heat management silk fibroin-based fabric prepared by the processing method of the present application has the following advantages:

[0034] (1) High solar reflectance. The nano aluminum oxide in the fabric A layer is uniformly wrapped by the silk fibroin fiber, which enhances the strong Mie scattering of the textile to sunlight and the internal total internal reflection of the fiber to sunlight, reduces the heating of the textile and human body by solar energy, and makes the human body obtain a lasting cool effect.

[0035] (2) The fabric has low thermal conductivity. The nano boron nitride in the fabric B layer is uniformly wrapped by the silk fibroin fiber, forming a large number of continuous heat conduction networks inside the fiber membrane, improving the thermal conductivity in the vertical and parallel directions, and facilitating the rapid dissipation of human body heat through the textile or the rapid diffusion from the main heat production part of the human body to other parts, thereby providing the human body with a lasting cool feeling.

[0036] (3) Good directional sweat effect. The layered design gives the silk fibroin-based fabric differences in fiber diameter, pore distribution and wettability gradient, providing a driving force for the transport of sweat from the skin to the external environment; the rapid evaporation of sweat not only maintains the dry comfort of the human skin, but also rapidly cools the human body, thereby improving the thermal and moisture comfort of the human body.

[0037] (4) The fabric has excellent biodegradability. The raw material of the moisture management silk fibroin-based fabric is derived from natural protein fibers, rather than non-renewable and non-degradable synthetic polymers derived from the petrochemical industry, which has the advantage of low-carbon sustainable development. DETAILED DESCRIPTION

[0038] Test method

[0039] Average infrared emissivity and average solar reflectivity: The average infrared emissivity and average solar reflectivity of the textile are calculated according to the standard ASTM G173-2003 (2020).

[0040] Thermal conductivity: The thermal conductivity of the silk fibroin-based fabric in the vertical and parallel directions is measured using a Netzsch LFA467 laser thermal conductivity instrument.

[0041] Textile one-way water transport index and water vapor transmission rate: The one-way water transport index and water vapor transmission rate of the textile are determined according to the standard GB / T 11048-2017.

[0042] Breaking strength: The breaking strength of the fabric is determined according to GB / T 3923.1-2013.

[0043] Example 1

[0044] A moisture management silk fibroin-based fabric, the processing method thereof comprises the following steps:

[0045] (1) Silk fibroin extraction: degummed silk fibers are dissolved and treated with a calcium chloride anhydrous / ethanol / water ternary system, and then dialyzed and freeze-dried to obtain silk fibroin; the mass ratio of CaCl2, EtOH and H2O in the calcium chloride anhydrous / ethanol / water ternary system is 1:2:8, the mass ratio of the degummed silk fibers to the calcium chloride anhydrous / ethanol / water ternary system is 1:10, the temperature for the dissolution and treatment is 70°C, and the time for the dissolution and treatment is 3 hours;

[0046] (2) Fabric A layer spinning construction: nano-alumina (particle size 35 nm), polyethylene oxide (molecular weight 10000) were added to formic acid solvent and ultrasonic dispersion, silk fibroin was added, dissolved to prepare the spinning solution of fabric A layer, and electrospinning was used to prepare fabric A layer;

[0047] The mass fraction of silk fibroin in the spinning solution of fabric A layer was 12wt%, the mass fraction of nano-alumina was 4wt%, and the mass fraction of polyethylene oxide was 0.8wt%;

[0048] The electrospinning parameters were as follows: power supply voltage 18kV, injection pump injection speed 0.8mL / h, collection roller winding speed 400rad / min, collection distance 15cm, and collection thickness 150μm; the obtained fabric A layer fiber diameter was 125nm;

[0049] (3) Fabric B layer spinning construction: nano-boron nitride (particle size 250nm) was added to hexafluoroisopropanol solvent and ultrasonic dispersion, silk fibroin was added, dissolved to prepare the spinning solution of fabric B layer, and electrospinning was used to form fabric B layer on the surface of fabric A layer to obtain a silk-based fabric;

[0050] The mass fraction of silk fibroin in the spinning solution of fabric B layer was 6wt%, and the mass fraction of nano-boron nitride was 40wt%;

[0051] The electrospinning parameters were as follows: power supply voltage 8kV, injection pump injection speed 2.2mL / h, collection roller winding speed 200rad / min, collection distance 8cm, and collection thickness 180μm; the obtained fabric B layer fiber diameter was 800nm;

[0052] The preparation method of the nano-boron nitride used was as follows: hexagonal boron nitride was added to a 1g / L sodium dodecyl sulfonate solution, the addition amount of hexagonal boron nitride relative to the sodium dodecyl sulfonate solution was 10g / L, ultrasonic treatment was performed for 3 hours, dialysis desalting was performed, and nano-boron nitride was obtained;

[0053] (4) Alcoholization and hydrophobization treatment: the silk-based fabric was soaked in anhydrous methanol for 15 minutes, naturally air-dried, and then a 2wt% heptadecafluorodecyltrimethoxysilane ethanol solution was sprayed on the surface of fabric B layer at a spraying distance of 20cm to obtain a moisture management silk-based fabric.

[0054] Example 2

[0055] A moisture management silk-based fabric, the processing method thereof comprises the following steps:

[0056] (1) Silk fibroin extraction: degummed silk fibers are dissolved and treated with a calcium chloride anhydrous / ethanol / water ternary system, dialyzed and freeze-dried to obtain silk fibroin; the mass ratio of CaCl2, EtOH and H2O in the calcium chloride anhydrous / ethanol / water ternary system is 1:2:8, the mass ratio of silk fibers to the calcium chloride anhydrous / ethanol / water ternary system is 1:10, the temperature of the dissolution treatment is 80°C, and the time of the dissolution treatment is 5 hours;

[0057] (2) Fabric A layer spinning construction: nano-aluminum oxide (particle size 40 nm) and polyethylene oxide (molecular weight 10000) are added to formic acid solvent and ultrasonically dispersed, and silk fibroin is added and dissolved to prepare a fabric A layer spinning solution, and an electrospun fabric A layer is prepared;

[0058] The mass fraction of silk fibroin in the fabric A layer spinning solution is 18wt%, the mass fraction of nano-aluminum oxide is 6wt%, and the mass fraction of polyethylene oxide is 1wt%;

[0059] The electrospinning parameters are: power supply voltage 22kV, injection pump injection speed 1mL / h, collection roller winding speed 400rad / min, collection distance 15cm, and collection thickness 200μm; the obtained fabric A layer fiber diameter is 120nm;

[0060] (3) Fabric B layer spinning construction: nano-boron nitride (particle size 400nm) is added to hexafluoroisopropanol solvent and ultrasonically dispersed, and silk fibroin is added and dissolved to prepare a fabric B layer spinning solution, and an electrospun fabric B layer is formed on the surface of the fabric A layer to obtain a silk-based fabric;

[0061] The mass fraction of silk fibroin in the fabric B layer spinning solution is 8wt%, and the mass fraction of nano-boron nitride is 50wt%;

[0062] The electrospinning parameters are: power supply voltage 10kV, injection pump injection speed 2.4mL / h, collection roller winding speed 200rad / min, collection distance 8cm, and collection thickness 180μm; the obtained fabric B layer fiber diameter is 900nm;

[0063] The preparation method of the nano-boron nitride used is: hexagonal boron nitride is added to a 1g / L sodium dodecyl sulfonate solution, the addition amount of hexagonal boron nitride relative to the sodium dodecyl sulfonate solution is 15g / L, ultrasonic treatment is performed for 5 hours, dialysis desalting is performed, and nano-boron nitride is obtained;

[0064] (4) Alcoholization and hydrophobization treatment: the silk-based fabric is soaked in anhydrous methanol for 25 minutes, naturally air-dried, and then a 3wt% heptadecafluorodecyltrimethoxysilane ethanol solution is sprayed on the surface of the fabric B layer at a spraying distance of 30cm to obtain a moisture management silk-based fabric.

[0065] Comparative Example 1

[0066] The difference compared with Example 1 is that no nano-alumina is added in step (2).

[0067] Comparative Example 2

[0068] The difference compared with Example 2 is that no nano-boron nitride is added in step (3).

[0069] Comparative Example 3

[0070] The difference compared with Example 1 is that no solution of heptadecafluorodecyltrimethoxysilane is sprayed in step (4).

[0071] Comparative Example 4

[0072] The difference compared with Example 1 is that formic acid is used instead of hexafluoroisopropanol to dissolve the silk fibroin in step (3), and the electrospinning parameters of step (3) are the same as those of step (2) of Example 1.

[0073] Comparative Example 5

[0074] The difference compared with Example 2 is that no nano-alumina is added in step (2).

[0075] Comparative Example 6

[0076] The difference compared with Example 2 is that no nano-boron nitride is added in step (3).

[0077] Comparative Example 7

[0078] The difference compared with Example 2 is that no solution of heptadecafluorodecyltrimethoxysilane is sprayed in step (4).

[0079] Comparative Example 8

[0080] The difference compared with Example 2 is that formic acid is used instead of hexafluoroisopropanol to dissolve the silk fibroin in step (3), and the electrospinning parameters of step (3) are the same as those of step (2) of Example 2.

[0081] The thermal conductivity of the inner surface (the side close to the human body, coated with heptadecafluorodecyltrimethoxysilane) of the moisture management silk-based fabric, the average solar reflectance and the average solar reflectance of the outer surface (the side facing the sunlight radiation, fabric A layer), the one-way water transfer index from the inside to the outside, the water vapor transmission rate of the moisture management silk-based fabric, and the breaking strength of the sample of Example 1-2 and Comparative Examples 1-8 are tested, and the results are shown in Table 1.

[0082] As shown in Table 1, the wet heat management silk fabric prepared by the method of the present application (Example 1, Example 2) has higher average infrared emissivity, average solar reflectivity and thermal conductivity, and the unidirectional water transport index and water vapor permeability are better than those of the samples in other examples, and the directional sweat discharge capacity is obvious. The reason is that the nanometer aluminum oxide in the fabric A layer increases the solar light reflection ability, the nanometer boron in the fabric B layer improves the thermal conductivity of the fabric, the differential fiber diameter setting and surface hydrophobic modification between the two layers form a strong unidirectional wetting effect from the inside to the outside, and a composite fabric with double Janus characteristics is constructed, which gives the silk fabric excellent thermal and moisture management effect and good mechanical properties.

[0083] Table 1

[0084]

[0085] The wet heat management silk fabric treated by steps (1)-(4) but without adding nanometer aluminum oxide in step (2) treatment (Comparative Example 1, Comparative Example 5) has slightly lower average infrared emissivity and average solar reflectivity, because the nanometer aluminum oxide itself can increase the infrared emissivity and average solar reflectivity of the surface of the silk fabric; the fabric directional sweat discharge capacity and thermal conductivity are comparable to those of the examples, and the fabric strength is slightly increased.

[0086] The wet heat management silk fabric treated by steps (1)-(4) but without adding nanometer boron nitride in step (3) treatment (Comparative Example 2, Comparative Example 6) has average infrared emissivity and average solar reflectivity similar to those of the samples in the examples, but the thermal conductivity of the silk fabric is lower, because nanometer boron nitride has a high thermal conductivity, and the lack of nanometer boron nitride increases the thermal resistance of the fabric B layer; the directional sweat discharge capacity of the prepared fabric is comparable to that of the samples in the examples, and the fabric strength is slightly increased.

[0087] The silk fabric treated by steps (1)-(4) but without spraying heptadecafluorodecyltrimethoxysilane in step (4) treatment (Comparative Example 3, Comparative Example 7) has average infrared emissivity, average solar reflectivity and fabric thermal conductivity similar to those of the samples in the examples, but the unidirectional water transport index of the prepared silk fabric is lower than that of the wet heat management silk fabric prepared in the examples, because the surface of the fabric B layer does not form a hydrophobic structure layer, and the moisture (used to simulate sweat) on the surface of the prepared silk fabric is difficult to efficiently diffuse and transfer from the inside to the outside to the hydrophilic fabric A layer, the directional sweat discharge capacity of the fabric is relatively poor, and the fabric strength is comparable to that of the examples.

[0088] The average infrared emissivity, average solar reflectivity and thermal conductivity of the silk fabric treated by steps (1)-(4) but using formic acid instead of hexafluoroisopropanol to dissolve silk in step (3) (Comparative Example 4 and Comparative Example 8) are similar to those of the samples in the examples, but the unidirectional water transport index of the fabric is not as good as that of the moisture management silk fabric prepared in the examples. The reason is that the spinning parameters in step (3) are the same as those in step (2), i.e. the diameters and porosities of the fibers in the B layer and the A layer of the fabric are similar, which results in the failure to form the differential effect of the B layer in quickly absorbing water and quickly transporting the water to the outside of the A layer in the simulation of unidirectional sweat transport, and thus the fabric has a lower ability to direct sweat from the inside to the outside than the examples. The strength of the fabric is slightly higher than that of the examples. This result also verifies that the different spinning solvents have a significant effect on the diameter of the silk fibers and the unidirectional moisture transport capacity in the design of the structure of the silk fabric, i.e. even if thick fibers are used as the inner layer and thin fibers are used as the outer layer, it is still beneficial to form the unidirectional moisture transport performance from the inside to the outside.

[0089] The above examples are not intended to limit the scope of the present application, and the described steps are not intended to limit the execution order. The modifications of the present application that are obvious to those skilled in the art in combination with the existing common knowledge also fall within the protection scope defined by the claims of the present application.

Claims

1. A moisture management silk based fabric, characterized in that, From outside to inside, it is fabric A layer, fabric B layer, and heptadecafluorodecyltrimethoxysilane coating layer in turn; the fabric A layer is silk fibroin fiber containing nano-alumina and polyethylene oxide, and the fabric B layer is silk fibroin fiber containing nano-boron nitride; the fiber diameter of the fabric A layer is 0.1-0.2 μm, and the fiber diameter of the fabric B layer is 0.8-1 μm; the particle size of the nano-alumina is 30-40 nm; and the particle size of the nano-boron nitride is 200-400 nm.

2. The process for the manufacture of the moisture management silk fabric according to claim 1, wherein, The method comprises the steps of: (1) fabric A layer spinning construction: adding nano-alumina and polyethylene oxide into formic acid solvent and ultrasonic dispersion, adding silk fibroin, dissolving to prepare fabric A layer spinning solution, and electrospinning to prepare fabric A layer; (2) fabric B layer spinning construction: adding nano-boron nitride into hexafluoroisopropanol solvent and ultrasonic dispersion, adding silk fibroin, dissolving to prepare fabric B layer spinning solution, and electrospinning on the surface of the fabric A layer to form the fabric B layer, thereby obtaining a silk-based fabric; (3) alcoholization and hydrophobization treatment: immersing the silk-based fabric in anhydrous methanol, naturally air-drying, and then spraying heptadecafluorodecyltrimethoxysilane ethanol solution on the surface of the fabric B layer, thereby obtaining a moisture management silk-based fabric.

3. The method of claim 2, wherein, In step (1), the extraction method of the silk fibroin is as follows: dissolving and treating degummed silk fibers by using a calcium chloride anhydrous / ethanol / water ternary system, dialyzing and freeze-drying, and thereby obtaining silk fibroin; The mass ratio of CaCl2, EtOH and H2O in the calcium chloride anhydrous / ethanol / water ternary system is 1:2:8; the mass ratio of the silk fibers to the calcium chloride anhydrous / ethanol / water ternary system is 1:8-1:12; the dissolving treatment temperature is 70-80°C; and the dissolving treatment time is 3-5 h.

4. The method of processing according to claim 2, wherein, In step (1), the molecular weight of the polyethylene oxide is 8000-12000; the mass fraction of the silk fibroin in the fabric A layer spinning solution is 12-18 wt%, the mass fraction of the nano-alumina is 4-6 wt%, and the mass fraction of the polyethylene oxide is 0.8-1 wt%; The electrospinning parameters are as follows: power voltage 18-22 kV, injection pump injection speed 0.8-1 mL / h, collection roller winding speed 350-450 rad / min, collection distance 13-17 cm, and collection thickness 150-200 μm.

5. The method of claim 2, wherein In step (2), the preparation method of the nano-boron nitride is as follows: adding hexagonal boron nitride into a sodium dodecyl sulfonate solution, ultrasonic treatment, and deionized water dialysis desalination, thereby obtaining nano-boron nitride; The mass concentration of the sodium dodecyl sulfonate solution is 0.5-1.5 g / L; the addition amount of the hexagonal boron nitride relative to the sodium dodecyl sulfonate solution is 10-15 g / L; and the ultrasonic treatment time is 3-5 h.

6. The method of processing according to claim 2, wherein, In step (2), the mass fraction of the silk fibroin in the fabric B layer spinning solution is 6-8 wt%, and the mass fraction of the nano-boron nitride is 40-50 wt%. The electrospinning parameters are as follows: power voltage 8-10 kV, injection pump injection speed 2.2-2.4 mL / h, collection roller winding speed 180-220 rad / min, collection distance 7-9 cm, and collection thickness 150-200 μm.

7. The method of processing according to claim 2, wherein, In step (3), the soaking time is 15-25 min; the mass fraction of heptadecafluorodecyltrimethoxysilane in the heptadecafluorodecyltrimethoxysilane ethanol solution is 2-3 wt%; and the spraying distance is 20-30 cm.

8. Use of the moisture and heat management silk fabric of claim 1 in functional textiles.

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