Composite warm-keeping fabric based on aerogel light heat storage material and preparation method of composite warm-keeping fabric

Abstract

The invention relates to the technical field of layered composite fabrics, in particular to a composite warm-keeping fabric based on an aerogel light heat storage material and a preparation method of the composite warm-keeping fabric. The composite warm-keeping fabric based on the aerogel light heat storage material comprises two layers of structures, namely an inner-layer fabric and an outer-layer fabric, the inner-layer fabric is a cashmere fabric formed by spinning cashmere yarns through a knitting process and is good in skin friendliness and heat retention property, the outer-layer fabric is a polyester heat-preservation fabric based on an aerogel light heat storage material and is formed by spinning hollow polyester fibers obtained by compounding polyester chips and the aerogel light heat storage material and carrying out melt spinning, and the outer-layer fabric is a polyester heat-preservation fabric based on the aerogel light heat storage material and is formed by spinning hollow polyester fibers obtained by carrying out melt spinning on the polyester chips and the aerogel light heat storage material. The hollow structure can effectively improve the thermal insulation performance of the polyester fabric, and the introduction of the aerogel light heat storage material can make the polyester fabric have the ability to absorb sunlight and efficiently convert the sunlight into heat, thereby achieving the effects of light absorption, heating, heat storage and thermal insulation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of layered composite fabrics, in particular to a composite warm-keeping fabric based on aerogel light heat storage material and a preparation method thereof. BACKGROUND

[0002] With the development of science and technology, people's requirements for clothing are getting higher and higher, such as using fabrics with light heat storage performance to make clothes. By adding light-absorbing and heat-generating materials, polyester fabrics have the ability to absorb sunlight and efficiently convert it into heat, increasing the skin surface temperature.

[0003] Chinese patent application CN118636547A discloses a light-absorbing and heat-generating composite fabric, which comprises a fabric, a light-absorbing and heat-generating film and a lining material that are sequentially attached. The light-absorbing and heat-generating film comprises a base and a plurality of particle size powders dispersed in the base, and the plurality of particle size powders comprise a first powder silicon-boron compound, which can realize full-spectrum light absorption and heat energy conversion, and improve the comprehensive efficiency of the composite fabric in light energy absorption and utilization. However, there is a problem of decline in the light-absorbing and heat-generating performance of the fabric due to poor dispersibility of the first powder silicon-boron compound in the base. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a composite warm-keeping fabric based on aerogel light heat storage material and a preparation method thereof to solve the problem of poor dispersibility of light-absorbing and heat-generating materials in the resin base in the prior art, which leads to a decline in the warmth of the fabric.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: A composite warm-keeping fabric based on aerogel light heat storage material, comprising an inner layer fabric and an outer layer fabric in a two-layer structure. The inner layer fabric is a skin-friendly warm-keeping fabric. The outer layer fabric is a polyester warm-keeping fabric based on aerogel light heat storage material.

[0006] A preparation method of the composite warm-keeping fabric based on aerogel light heat storage material as described above, comprising the following steps: Step one, preparing a polyester warm-keeping fabric based on aerogel light heat storage material. Step two, taking the skin-friendly warm-keeping fabric as the inner layer fabric, taking the polyester warm-keeping fabric based on aerogel light heat storage material as the outer layer fabric, and compositing the inner layer fabric and the outer layer fabric in equal area to obtain the composite warm-keeping fabric based on aerogel light heat storage material.

[0007] Preferably, in step one, the preparation method of the polyester warm-keeping fabric based on aerogel light heat storage material comprises the following steps: S1. Polyester chips (polyethylene terephthalate) are mixed with aerogel photothermal storage material, melted, extruded, cooled, and granulated to obtain modified polyester particles. S2. The modified polyester particles are melted, the melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain hollow polyester fibers. S3. Hollow polyester fibers are spun into polyester yarn, and the polyester yarn is spun into polyester thermal insulation fabric based on aerogel photothermal storage material through a knitting process.

[0008] Preferably, in S1, the mass ratio of polyester chips to aerogel photothermal storage material is 100:(1-5), and the melting temperature is 275-285℃.

[0009] Preferably, the aerogel photothermal storage material in S1 is prepared by the following steps: Step (1): Preparation of modified carbon nanotubes and modified graphene oxide: Carbon nanotubes were mixed with concentrated sulfuric acid, stirred, and ultrasonically dispersed. Then, concentrated nitric acid was added, and the mixture was allowed to react. After the reaction was completed, the mixture was filtered, washed, and dried to obtain modified carbon nanotubes. Graphene oxide was dispersed in deionized water, ethylenediamine was added, the mixture was stirred and ultrasonically dispersed, and then an amination reaction was carried out under ultraviolet radiation. After the reaction was completed, the mixture was rotary evaporated to obtain modified graphene oxide. Step (2): The modified carbon nanotubes and modified graphene oxide are dispersed in deionized water, stirred, ultrasonically dispersed, and then chemically cross-linked under microwave radiation to obtain a hydrosol. Step (3): Place the hydrosol in an environment of 70-90℃ for 12-24h. After the reaction is completed, wash and dry to obtain the aerogel precursor. Step (4): After drying the aerogel precursor, hot press and sinter it to obtain the aerogel light heat storage material.

[0010] Preferably, in step S2, the melting temperature is 275-285°C, and the spinneret holes on the spinneret are C-shaped holes or annular holes.

[0011] Preferably, in step S2, the temperature of the annular airflow is 26-29℃, and the airflow velocity is 0.3-0.5m / min.

[0012] Preferably, in step S2, the draw ratio is 2.5-3.5 times and the draw temperature is 150-160℃.

[0013] Preferably, in step S2, the heat setting temperature is 135-150℃ and the winding speed is 4000-4500m / min.

[0014] Preferably, in step S3, the polyester yarn has a count of 30-40S (English count), and the polyester thermal insulation fabric based on aerogel photothermal material has a weight of 180-220 g / m². 2 .

[0015] Preferably, the skin-friendly and warm fabric in step two includes cashmere fabric, which is spun from cashmere yarn through a knitting process.

[0016] Preferably, the weight of the cashmere fabric is 80-120 g / m². 2 .

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The composite thermal insulation fabric of this invention comprises a two-layer structure of an inner layer and an outer layer. An air layer is formed between the two layers to improve the thermal insulation performance of the composite fabric. The inner layer is a cashmere fabric spun from cashmere yarn through a knitting process, which has good skin-friendliness and warmth retention. The outer layer is a polyester thermal insulation fabric based on aerogel photothermal storage material. It is made of hollow polyester fibers obtained by melt spinning by combining polyester chips with aerogel photothermal storage material. The hollow structure can effectively improve the thermal insulation performance of the polyester fabric. The introduction of aerogel photothermal storage material enables the polyester fabric to absorb sunlight and efficiently convert sunlight into heat, thereby achieving the function of heat storage and insulation. The aerogel photothermal storage material in this invention is a graphene / carbon nanotube composite aerogel. Graphene and carbon nanotubes work synergistically to achieve good light absorption and heat generation performance and heat storage capacity. Furthermore, the graphene / carbon nanotube composite aerogel has good dispersibility in polyester, which further improves its light absorption and heat generation performance and heat storage capacity. Attached Figure Description

[0018] Figure 1 The figures show the measurement results of the light absorption and heat generation properties and heat retention rate of the polyester thermal insulation fabrics based on aerogel photothermal storage materials prepared in Examples 2-6 and Comparative Examples 1-2 of this invention. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Example 1

[0021] This embodiment discloses a method for preparing aerogel photothermal storage material, including the following steps: Step (1): Preparation of modified carbon nanotubes and modified graphene oxide: Carbon nanotubes were mixed with concentrated sulfuric acid and stirred at room temperature for 10 h. Then, they were ultrasonically dispersed at 50 kHz for 10 h. Concentrated nitric acid was added and the mixture was refluxed at 120 °C for 24 h. After the reaction was completed, the mixture was filtered, washed until neutral, and dried in a vacuum oven at 50 °C until constant weight to obtain modified carbon nanotubes. The ratio of carbon nanotubes, concentrated sulfuric acid, and concentrated nitric acid is 1g:90mL:30mL, with the concentrated sulfuric acid being a 95wt% sulfuric acid aqueous solution and the concentrated nitric acid being a 65wt% nitric acid aqueous solution. Graphene oxide was dispersed in deionized water, and ethylenediamine was added. The mixture was stirred at 500 r / min for 1 h, and then ultrasonically dispersed at 50 kHz for 1 h. The stirring and ultrasonication processes were repeated 5 times. The mixture was then irradiated under a 300 W UV lamp for 30 min to carry out an amination reaction. After standing for 1 h, the mixture was irradiated under a 300 W UV lamp for 30 min to carry out an amination reaction. The amination reaction and standing process were repeated 50 times. Finally, the deionized water and unreacted ethylenediamine were removed by rotary evaporation at 80 °C to obtain modified graphene oxide. The ratio of graphene oxide, deionized water, and ethylenediamine used is 0.6g:60mL:2g. Step (2): Disperse the modified carbon nanotubes and modified graphene oxide in deionized water, stir at 600 r / min for 60 min at room temperature, and then ultrasonically disperse at 80 kHz for 60 min, so that the ratio of modified carbon nanotubes, modified graphene oxide and deionized water is 0.5 g: 2 g: 10 mL, and perform chemical cross-linking under 1000 W microwave radiation for 20 min to obtain a hydrosol; Step (3): The hydrosol was placed in an environment of 80°C and reacted for 18 hours. After the reaction was completed, it was washed with water until the pH of the washing solution was neutral. Then, it was placed in a vacuum oven at 50°C and dried to constant weight to obtain the aerogel precursor. Step (4): After drying the aerogel precursor, hot-press sintering is carried out. Specifically, the hot-press sintering is carried out at a high temperature of 1000℃ for 24 hours under a nitrogen atmosphere to obtain the aerogel light heat storage material.

[0022] Example 2

[0023] This embodiment discloses a method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material, including the following steps: Step 1: Prepare polyester thermal insulation fabric based on aerogel photothermal storage material, including the following steps: S1. Mix polyester chips with aerogel photothermal storage material at a mass ratio of 100:1, melt the mixture at a melting temperature of 275℃, extrude the mixture, cool it, and granulate it to obtain modified polyester granules. S2. The modified polyester particles are melted at a melting temperature of 275°C. The melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain hollow polyester fibers with a length of 38 mm. Among them, the spinneret holes on the spinneret are C-shaped holes, the air temperature of the ring blower is 28℃, the air velocity of the ring blower is 0.4m / min, the draw ratio is 3 times, the draw temperature is 155℃, the heat setting temperature is 140℃, and the winding speed is 4500m / min. S3. Hollow polyester fibers are spun into polyester yarn with a yarn count of 35S. The polyester yarn is then knitted into a polyester thermal insulation fabric based on aerogel photothermal storage material. The weight of the polyester thermal insulation fabric based on aerogel photothermal storage material is 200g / m². 2 ; Step 2: Spin the cashmere yarn using a knitting process to achieve a weight of 100g / m². 2 Cashmere fabric, which is a skin-friendly and warm fabric; A skin-friendly and warm fabric is used as the inner layer, and a polyester warm fabric based on aerogel photothermal storage material is used as the outer layer. The inner and outer fabrics are sewn together with polyester sewing thread to obtain a composite warm fabric based on aerogel photothermal storage material.

[0024] Example 3

[0025] This embodiment discloses a method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material, including the following steps: Step 1: Prepare polyester thermal insulation fabric based on aerogel photothermal storage material, including the following steps: S1. Polyester chips are mixed with aerogel photothermal storage material at a mass ratio of 100:5. The mixture is melted at a melting temperature of 285℃, extruded, cooled, and pelletized to obtain modified polyester granules. S2. The modified polyester particles are melted at a melting temperature of 285℃. The melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain hollow polyester fibers with a length of 38mm. Among them, the spinneret holes on the spinneret are C-shaped holes, the air temperature of the ring blower is 28℃, the air velocity of the ring blower is 0.4m / min, the draw ratio is 3 times, the draw temperature is 155℃, the heat setting temperature is 140℃, and the winding speed is 4500m / min. S3. Hollow polyester fibers are spun into polyester yarn with a yarn count of 35S. The polyester yarn is then knitted into a polyester thermal insulation fabric based on aerogel photothermal storage material. The weight of the polyester thermal insulation fabric based on aerogel photothermal storage material is 200g / m².2 ; Step 2: Spin the cashmere yarn using a knitting process to achieve a weight of 100g / m². 2 Cashmere fabric, which is a skin-friendly and warm fabric; A skin-friendly and warm fabric is used as the inner layer, and a polyester warm fabric based on aerogel photothermal storage material is used as the outer layer. The inner and outer fabrics are sewn together with polyester sewing thread to obtain a composite warm fabric based on aerogel photothermal storage material.

[0026] Example 4

[0027] This embodiment discloses a method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material, including the following steps: Step 1: Prepare polyester thermal insulation fabric based on aerogel photothermal storage material, including the following steps: S1. Polyester chips are mixed with aerogel photothermal storage material at a mass ratio of 100:2. The mixture is melted at a melting temperature of 280°C, extruded, cooled, and pelletized to obtain modified polyester granules. S2. The modified polyester particles are melted at a melting temperature of 280℃. The melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain hollow polyester fibers with a length of 38mm. Among them, the spinneret holes on the spinneret are C-shaped holes, the air temperature of the ring blower is 28℃, the air velocity of the ring blower is 0.4m / min, the draw ratio is 3 times, the draw temperature is 155℃, the heat setting temperature is 140℃, and the winding speed is 4500m / min. S3. Hollow polyester fibers are spun into polyester yarn with a yarn count of 35S. The polyester yarn is then knitted into a polyester thermal insulation fabric based on aerogel photothermal storage material. The weight of the polyester thermal insulation fabric based on aerogel photothermal storage material is 200g / m². 2 ; Step 2: Spin the cashmere yarn using a knitting process to achieve a weight of 100g / m². 2 Cashmere fabric, which is a skin-friendly and warm fabric; A skin-friendly and warm fabric is used as the inner layer, and a polyester warm fabric based on aerogel photothermal storage material is used as the outer layer. The inner and outer fabrics are sewn together with polyester sewing thread to obtain a composite warm fabric based on aerogel photothermal storage material.

[0028] Example 5

[0029] This embodiment discloses a method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material, including the following steps: Step 1: Prepare polyester thermal insulation fabric based on aerogel photothermal storage material, including the following steps: S1. Polyester chips are mixed with aerogel photothermal storage material at a mass ratio of 100:3. The mixture is melted at a melting temperature of 280°C, extruded, cooled, and pelletized to obtain modified polyester granules. S2. The modified polyester particles are melted at a melting temperature of 280℃. The melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain hollow polyester fibers with a length of 38mm. Among them, the spinneret holes on the spinneret are C-shaped holes, the air temperature of the ring blower is 28℃, the air velocity of the ring blower is 0.4m / min, the draw ratio is 3 times, the draw temperature is 155℃, the heat setting temperature is 140℃, and the winding speed is 4500m / min. S3. Hollow polyester fibers are spun into polyester yarn with a yarn count of 35S. The polyester yarn is then knitted into a polyester thermal insulation fabric based on aerogel photothermal storage material. The weight of the polyester thermal insulation fabric based on aerogel photothermal storage material is 200g / m². 2 ; Step 2: Spin the cashmere yarn using a knitting process to achieve a weight of 100g / m². 2 Cashmere fabric, which is a skin-friendly and warm fabric; A skin-friendly and warm fabric is used as the inner layer, and a polyester warm fabric based on aerogel photothermal storage material is used as the outer layer. The inner and outer fabrics are sewn together with polyester sewing thread to obtain a composite warm fabric based on aerogel photothermal storage material.

[0030] Example 6

[0031] This embodiment discloses a method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material, including the following steps: Step 1: Prepare polyester thermal insulation fabric based on aerogel photothermal storage material, including the following steps: S1. Polyester chips are mixed with aerogel photothermal storage material at a mass ratio of 100:4. The mixture is melted at a melting temperature of 280°C, extruded, cooled, and pelletized to obtain modified polyester granules. S2. The modified polyester particles are melted at a melting temperature of 280℃. The melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain hollow polyester fibers with a length of 38mm. Among them, the spinneret holes on the spinneret are C-shaped holes, the air temperature of the ring blower is 28℃, the air velocity of the ring blower is 0.4m / min, the draw ratio is 3 times, the draw temperature is 155℃, the heat setting temperature is 140℃, and the winding speed is 4500m / min. S3. Hollow polyester fibers are spun into polyester yarn with a yarn count of 35S. The polyester yarn is then knitted into a polyester thermal insulation fabric based on aerogel photothermal storage material. The weight of the polyester thermal insulation fabric based on aerogel photothermal storage material is 200g / m². 2 ; Step 2: Spin the cashmere yarn using a knitting process to achieve a weight of 100g / m². 2 Cashmere fabric, which is a skin-friendly and warm fabric; A skin-friendly and warm fabric is used as the inner layer, and a polyester warm fabric based on aerogel photothermal storage material is used as the outer layer. The inner and outer fabrics are sewn together with polyester sewing thread to obtain a composite warm fabric based on aerogel photothermal storage material.

[0032] Comparative Example 1 This comparative example discloses a method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material, including the following steps: Step 1: Prepare polyester thermal insulation fabric based on aerogel photothermal storage material, including the following steps: S1. Polyester chips are mixed with carbon nanotubes and graphene oxide in a mass ratio of 100:0.2:0.8. The mixture is melted at a melting temperature of 275°C, extruded, cooled, and pelletized to obtain modified polyester granules. S2. The modified polyester particles are melted at a melting temperature of 275°C. The melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain hollow polyester fibers with a length of 38 mm. Among them, the spinneret holes on the spinneret are C-shaped holes, the air temperature of the ring blower is 28℃, the air velocity of the ring blower is 0.4m / min, the draw ratio is 3 times, the draw temperature is 155℃, the heat setting temperature is 140℃, and the winding speed is 4500m / min. S3. Hollow polyester fibers are spun into polyester yarn with a yarn count of 35S. The polyester yarn is then knitted into a polyester thermal insulation fabric based on aerogel photothermal storage material. The weight of the polyester thermal insulation fabric based on aerogel photothermal storage material is 200g / m². 2 ; Step 2: Spin the cashmere yarn using a knitting process to achieve a weight of 100g / m². 2 Cashmere fabric, which is a skin-friendly and warm fabric; A skin-friendly and warm fabric is used as the inner layer, and a polyester warm fabric based on aerogel photothermal storage material is used as the outer layer. The inner and outer fabrics are sewn together with polyester sewing thread to obtain a composite warm fabric based on aerogel photothermal storage material.

[0033] Comparative Example 2 This comparative example discloses a method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material, including the following steps: Step 1: Prepare polyester thermal insulation fabric based on aerogel photothermal storage material, including the following steps: S1. Polyester chips are mixed with carbon nanotubes and graphene oxide in a mass ratio of 100:0.2:0.8. The mixture is melted at a melting temperature of 275°C, extruded, cooled, and pelletized to obtain modified polyester granules. S2. The modified polyester particles are melted at a melting temperature of 275°C. The melt is extruded through a spinneret, cooled by a ring blower, bundled and oiled, stretched, heat-set and wound, and chopped to obtain polyester fibers with a length of 38 mm. Among them, the spinneret holes on the spinneret are circular holes, the air temperature of the ring blower is 28℃, the air velocity of the ring blower is 0.4m / min, the draw ratio is 3 times, the draw temperature is 155℃, the heat setting temperature is 140℃, and the winding speed is 4500m / min. S3. Polyester fibers are spun into polyester yarn with a yarn count of 35S. The polyester yarn is then knitted into a polyester thermal insulation fabric based on aerogel photothermal storage material. The weight of the polyester thermal insulation fabric based on aerogel photothermal storage material is 200g / m². 2 ; Step 2: Spin the cashmere yarn using a knitting process to achieve a weight of 100g / m². 2 Cashmere fabric, which is a skin-friendly and warm fabric; A skin-friendly and warm fabric is used as the inner layer, and a polyester warm fabric based on aerogel photothermal storage material is used as the outer layer. The inner and outer fabrics are sewn together with polyester sewing thread to obtain a composite warm fabric based on aerogel photothermal storage material.

[0034] In the above embodiments and comparative examples: the carbon nanotubes have a length of 5-15 μm and a diameter of 15-25 nm; the graphene oxide is a single-layer graphene oxide nanosheet with a diameter <20 μm and a thickness <2 nm; the polyester chips have a density of 1.18 g / cm³. 3 The melting point is 230℃; the cashmere yarn specification is 26S / 2; the polyester sewing thread specification is 300D / 3 strands.

[0035] Experimental Example: The light absorption and heat generation performance and heat retention rate of polyester thermal insulation fabric samples based on aerogel photothermal storage material prepared in Examples 2-6 and Comparative Examples 1-2 were tested. The light absorption and heat generation performance is represented by the temperature difference. The test method is as follows: The polyester thermal insulation fabric sample based on aerogel photothermal storage material is placed on a heat-insulating platform, and the fabric sample is heated with an infrared heating lamp with a power of 500W. The distance between the infrared heating lamp and the fabric sample is 50cm, and the heating time is 30min. The surface temperature of the fabric sample before and after heating is recorded, and the surface temperature difference of the fabric sample before and after heating is calculated. The heat retention rate is tested according to the method in standard GB11048-89 "Test Method for Thermal Insulation Performance of Textiles". The test results are shown in Table 1. Table 1

[0036] As shown in Table 1, the polyester thermal insulation fabric based on aerogel photothermal storage material prepared in this invention has good heat storage and insulation performance. By adding aerogel photothermal storage material to polyester chips, the resulting polyester fabric has good light absorption and heat generation performance and heat storage capacity. The hollow structure of polyester fibers can also enhance the heat storage and insulation effect of the polyester fabric and improve its thermal insulation performance. Compared with Example 2, in Comparative Example 1, carbon nanotubes and graphene oxide did not form a graphene / carbon nanotube composite aerogel and were added independently, resulting in poor dispersion in polyester and a decrease in light absorption and heat generation performance and thermal insulation rate. Compared with Comparative Example 1, in Comparative Example 2, the polyester fibers do not have a hollow structure, resulting in a decrease in the heat storage and insulation effect of the polyester fabric and a further decrease in the thermal insulation rate of the polyester fabric.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aerogel light heat storage material-based composite thermal insulation fabric, characterized in that, The application relates to a composite warm-keeping fabric, which comprises an inner layer fabric and an outer layer fabric. The inner layer fabric is a skin-friendly warm-keeping fabric. The outer layer fabric is a polyester warm-keeping fabric based on aerogel light heat storage material.

2. A method for preparing the composite thermal insulation fabric based on aerogel light heat storage material according to claim 1, characterized in that, The application further discloses a preparation method of the composite warm-keeping fabric. The polyester warm-keeping fabric based on aerogel light heat storage material is prepared through the following steps: S1, mixing polyester chips with aerogel light heat storage material, melting, extruding, cooling, granulating, and obtaining modified polyester particles; 3. The preparation method of the composite thermal fabric based on aerogel light heat storage material according to claim 2, characterized in that, S2, melting the modified polyester particles, extruding the melt through a spinneret, cooling through ring blowing, oiling, drawing, heat setting, winding, and cutting, and obtaining hollow polyester fibers; S3, spinning the hollow polyester fibers into polyester yarn, and spinning the polyester yarn into the polyester warm-keeping fabric based on aerogel light heat storage material through a knitting process. In S1, the mass ratio of the polyester chips to the aerogel light heat storage material is 100: (1-5), and the melting temperature is 275-285 DEG C. The aerogel light heat storage material in S1 is prepared through the following steps:

4. The composite thermal fabric based on aerogel light heat storage material according to claim 3, characterized in that, Step (1), preparing modified carbon nanotubes and modified graphene oxide:

5. The composite thermal fabric based on aerogel light heat storage material according to claim 3, characterized in that, mixing carbon nanotubes with concentrated sulfuric acid, stirring, ultrasonic dispersion, adding concentrated nitric acid, reacting, filtering, washing, and drying to obtain the modified carbon nanotubes; dispersing graphene oxide in deionized water, adding ethylenediamine, stirring, ultrasonic dispersion, and performing an amination reaction under ultraviolet radiation, and then rotary evaporation to obtain the modified graphene oxide; Step (2), dispersing the modified carbon nanotubes and the modified graphene oxide in deionized water, stirring, ultrasonic dispersion, and performing chemical crosslinking under microwave radiation to obtain a hydrosol; Step (3), reacting the hydrosol in an environment with a temperature of 70-90 DEG C for 12-24 h, washing, and drying to obtain an aerogel precursor; Step (4), drying the aerogel precursor, and then hot-pressing and sintering to obtain the aerogel light heat storage material. In S2, the melting temperature is 275-285 DEG C, and the spinneret holes on the spinneret are C-shaped holes or ring-shaped holes. In S2, the wind temperature of the ring blowing is 26-29 DEG C, and the wind speed of the ring blowing is 0.3-0.5 m / min.

6. The composite thermal fabric based on aerogel light heat storage material according to claim 3, characterized in that, In S2, the drawing multiple is 2.5-3.5 times, the drawing temperature is 150-160 DEG C, the heat setting temperature is 135-150 DEG C, and the winding speed is 4000-4500 m / min.

7. The composite thermal fabric based on aerogel light heat storage material according to claim 3, characterized in that, The skin-friendly warm-keeping fabric in Step 2 comprises a cashmere fabric, and the cashmere fabric is spun through a knitting process.

8. The composite thermal fabric based on aerogel light heat storage material according to claim 3, characterized in that, ​ 9. The composite thermal fabric based on aerogel light heat storage material according to claim 3, characterized in that, In the S3, the yarn count of the polyester yarn is 30-40S, and the gram weight of the polyester thermal fabric based on the aerogel light heat storage material is 180-220 g / m 2 .

10. The method for preparing a composite thermal insulation fabric based on aerogel photothermal storage material according to claim 2, characterized in that, ​ The weight of the cashmere fabric is 80-1020 g / m 2 .

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