Warp knitted fabric with temperature regulating function and manufacturing method thereof

Abstract

The present invention relates to the technical field of thermostatic warp knitted fabrics, and in particular to a thermostatic warp knitted fabric, comprising a surface layer and an intermediate layer, wherein the surface layer comprises an upper surface layer and a lower surface layer, wherein the warp and weft in the upper surface layer are phase change fibers A, and the warp and weft in the lower surface layer are phase change fibers B; the phase change fibers A comprise graphene hollow fibers A and phase change materials A, wherein the phase change materials A are composed of paraffin wax and heat conductive additive materials, and the phase change fibers B comprise graphene hollow fibers B and phase change materials B, wherein the phase change materials B are composed of acetic acid and polyacrylamide hydrogel. The upper surface layer and the lower surface layer of the fabric are made of different materials, wherein the upper surface layer is usually used as an outer surface, and can phase change to absorb heat when exposed to sunlight in summer, and the lower surface layer is usually used as an inner surface, and can phase change to release heat when it is cold in winter, and the graphene hollow fibers are selected to cooperate with the phase change materials, and the graphene hollow fibers themselves have good thermal conductivity, and can optimize the thermostatic effect of the phase change fibers.

Description

Technical Field

[0001] The invention relates to the technical field of temperature-regulating warp knitted fabrics, and in particular to a warp knitted fabric with a temperature-regulating function and a manufacturing method thereof. Background Art

[0002] The preparation technology of phase change thermostatic fiber mainly studies the effective combination between phase change material and fiber matrix. At present, the main methods for preparing phase change thermostatic fiber materials are microcapsule blending spinning method, skin-core composite spinning method and hollow fiber filling method.

[0003] The hollow fiber filling method is to fill the phase change material into the fiber cavity area. The phase change material and the fiber matrix are combined through physical adsorption. The wettability of the fiber matrix and the rheological properties of the phase change material determine its heat storage performance and packaging effect. Phase change fiber materials have the advantages of high enthalpy value and excellent heat storage performance, and are widely used in various types of fabric fibers.

[0004] Car seat fabrics generally have the problem of poor temperature adaptability. The fabrics are easily heat-absorbed when exposed to the sun in the summer, and feel cold to the touch in the winter, which is not very comfortable. There are also some car seat fabrics made of phase change fibers on the market, but the hollow fibers of such fabrics are mainly made of high molecular polymers represented by polyethylene and polypropylene, which have low thermal conductivity, affecting the temperature regulation effect of phase change fibers, and it is difficult to meet the temperature regulation needs of both winter and summer. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a warp knitted fabric with temperature regulating function and a manufacturing method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A warp knitted fabric with a temperature regulating function comprises a surface layer and an intermediate layer, wherein the surface layer is composed of warp threads, weft threads and reinforcing threads, the warp threads and weft threads are arranged in an interlaced and wound manner, the reinforcing threads are arranged transversely and sequentially pass through the connection spaces between the warp threads and the weft threads, the surface layer comprises an upper surface layer and a lower surface layer, the intermediate layer is composed of reinforcing threads, connecting the upper surface layer and the lower surface layer, the warp threads and weft threads are phase change fibers, the warp threads and weft threads in the upper surface layer are phase change fibers A, and the warp threads and weft threads in the lower surface layer are phase change fibers B; when applied to automobile seat fabrics, the upper surface layer is usually used as an outer surface, and the lower surface layer is usually used as an inner surface.

[0008] The phase change fiber A comprises a graphene hollow fiber A and a phase change material A, wherein the phase change material A is composed of the following raw materials in parts by weight: 50 to 80 parts of paraffin wax and 1 to 10 parts of a heat conductive additive material;

[0009] The phase change fiber B comprises a graphene hollow fiber B and a phase change material B, wherein the phase change material B is composed of the following raw materials in parts by weight: 30 to 70 parts of acetic acid and 10 to 30 parts of polyacrylamide hydrogel. The polyacrylamide hydrogel can prevent the leakage of liquefied acetic acid.

[0010] Preferably, the paraffin wax has 18 to 40 carbon atoms and a phase transition temperature of 27.5°C to 55°C.

[0011] Preferably, the thermal conductive additive material is one or more of aluminum nitride, silicon nitride, silicon carbide, aluminum oxide, magnesium oxide, zinc oxide micron or nano metal powder and graphite powder.

[0012] Preferably, the phase change fiber A has an outer diameter of 0.08 to 1.2 mm and an inner diameter of 0.04 to 1.0 mm.

[0013] Preferably, the phase change fiber B has an outer diameter of 0.1 to 1.5 mm and an inner diameter of 0.08 to 1.3 mm.

[0014] Preferably, the reinforcing line is made of one of polyethylene, polypropylene, polyester fiber, nylon fiber and spandex fiber.

[0015] A method for manufacturing a warp knitted fabric with a temperature regulating function, comprising the following steps:

[0016] S1. Prepare hydrous graphene oxide hollow fibers by coaxial electrospinning, and prepare graphene hollow fibers by drying and reducing;

[0017] S2. Preparation of phase change fiber A: heating paraffin and heat conductive additive material to melt and mix, subjecting the heated, melted and mixed materials to ultrasonic treatment to obtain phase change material A with fluidity, heating phase change material A until melted and injecting it into the cavity of graphene hollow fiber, and sealing with resin to obtain phase change fiber A;

[0018] S3, preparation of phase change fiber B: acetic acid and polyacrylamide hydrogel are stirred and mixed to obtain phase change material B, the phase change material B is injected into the cavity of the graphene hollow fiber, and the end is sealed with resin to obtain phase change fiber B;

[0019] S4. Use a warp knitting machine to weave the phase change fiber A as the warp and weft to form an upper surface layer, and use the phase change fiber B as the warp and weft to weave to form a lower surface layer. The reinforcement line passes through the connection between the warp and the weft in turn to form a middle layer.

[0020] Preferably, in step S1, the outer layer solution and the inner layer solution are first input into the outer layer and the inner layer of the coaxial needle respectively, and then the outer layer solution is injected into the receiving solution to obtain a hydrated graphene oxide hollow fiber, which is then dried to obtain a graphene oxide hollow fiber, and then reduced to obtain a graphene hollow fiber.

[0021] Furthermore, the outer layer solution is graphene oxide solution, and the inner layer solution is PS, PAA, PI, CaCl 2 and one of 1-butyl-3-methylimidazole and 1-allyl-3-methylimidazole.

[0022] Preferably, in step S2, the ultrasonic time is 30 to 60 min, and the ultrasonic frequency is 200 to 350 Hz.

[0023] The beneficial effects of the present invention are:

[0024] 1. The upper and lower surfaces of the fabric are made of different materials. The upper surface is usually used as the outer surface. When exposed to the sun in summer, it can absorb heat through phase change, thereby reducing the surface temperature of the fabric. The lower surface is usually used as the inner surface. When it is cold in winter, it can release heat through phase change, making the fabric feel warm.

[0025] 2. The fabric uses graphene hollow fiber and phase change material. The graphene hollow fiber itself has good thermal conductivity, which can better conduct the heat and cold generated by the phase change material during the phase change process, and can optimize the temperature regulation effect of the phase change fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a schematic structural diagram of a warp knitted fabric with temperature regulating function. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Embodiment 1:

[0029] A warp knitted fabric with a temperature regulating function, comprising a surface layer and an intermediate layer, wherein the surface layer is composed of warp threads, weft threads and reinforcing threads, the warp threads and weft threads are interlaced and wound, the reinforcing threads are arranged transversely and sequentially pass through the connection between the warp threads and the weft threads, the surface layer comprises an upper surface layer and a lower surface layer, the intermediate layer is composed of reinforcing threads, connecting the upper surface layer and the lower surface layer, the warp threads and weft threads are phase change fibers, the warp threads and weft threads in the upper surface layer are phase change fibers A, and the warp threads and weft threads in the lower surface layer are phase change fibers B;

[0030] Phase change fiber A includes graphene hollow fiber A and phase change material A. The outer diameter of phase change fiber A is 1.0 mm and the inner diameter is 0.8 mm. Phase change material A is composed of 60 parts of paraffin and 10 parts of thermal conductive additive material. The number of carbon atoms in paraffin is 18 to 30, the phase change temperature is 27.5°C to 45°C, and the thermal conductive additive material is graphite powder.

[0031] The phase change fiber B includes a graphene hollow fiber B and a phase change material B. The outer diameter of the phase change fiber B is 1.3 mm, and the inner diameter is 1.1 mm. The phase change material B is composed of 60 parts of acetic acid and 25 parts of polyacrylamide hydrogel.

[0032] The reinforcement wire is made of polypropylene.

[0033] A method for manufacturing a warp knitted fabric with a temperature regulating function, comprising the following steps:

[0034] S1. Hydrous graphene oxide hollow fibers are prepared by coaxial electrospinning. The outer layer solution and the inner layer solution are first input into the outer layer and the inner layer of the coaxial needle respectively, and then the outer layer solution is injected into the receiving solution to obtain hydrous graphene oxide hollow fibers, and then dried to obtain graphene oxide hollow fibers, and then reduced to obtain graphene hollow fibers; the outer layer solution is graphene oxide solution, and the inner layer solution is PS.

[0035] S2. Preparation of phase change fiber A: heating paraffin and heat conductive additive material to melt and mix, subjecting the heated, melted and mixed materials to ultrasonic treatment, the ultrasonic time is 45 minutes, the ultrasonic frequency is 250 Hz, to obtain phase change material A with fluidity, heating phase change material A until melted and injecting it into the cavity of graphene hollow fiber, using resin to seal, to obtain phase change fiber A;

[0036] S3, preparation of phase change fiber B: acetic acid and polyacrylamide hydrogel are stirred and mixed to obtain phase change material B, the phase change material B is injected into the cavity of the graphene hollow fiber, and the end is sealed with resin to obtain phase change fiber B;

[0037] S4. Use a warp knitting machine to weave the phase change fiber A as the warp and weft to form an upper surface layer, and use the phase change fiber B as the warp and weft to weave to form a lower surface layer. The reinforcement line passes through the connection between the warp and the weft in turn to form a middle layer.

[0038] Embodiment 2:

[0039] A warp knitted fabric with a temperature regulating function, comprising a surface layer and an intermediate layer, wherein the surface layer is composed of warp threads, weft threads and reinforcing threads, the warp threads and weft threads are interlaced and wound, the reinforcing threads are arranged transversely and sequentially pass through the connection between the warp threads and the weft threads, the surface layer comprises an upper surface layer and a lower surface layer, the intermediate layer is composed of reinforcing threads, connecting the upper surface layer and the lower surface layer, the warp threads and weft threads are phase change fibers, the warp threads and weft threads in the upper surface layer are phase change fibers A, and the warp threads and weft threads in the lower surface layer are phase change fibers B;

[0040] Phase change fiber A includes graphene hollow fiber A and phase change material A. The outer diameter of phase change fiber A is 1.2 mm and the inner diameter is 1.0 mm. Phase change material A is composed of 80 parts of paraffin and 10 parts of thermal conductive additive material. The number of carbon atoms in paraffin is 25 to 40, the phase change temperature is 32.5°C to 55°C, and the thermal conductive additive material is zinc oxide nano metal powder.

[0041] The phase change fiber B includes a graphene hollow fiber B and a phase change material B. The outer diameter of the phase change fiber B is 1.5 mm, and the inner diameter is 1.3 mm. The phase change material B is composed of 70 parts of acetic acid and 30 parts of polyacrylamide hydrogel.

[0042] The reinforcement wire is made of polypropylene.

[0043] A method for manufacturing a warp knitted fabric with a temperature regulating function, comprising the following steps:

[0044] S1. Hydrous graphene oxide hollow fibers are prepared by coaxial electrospinning. The outer layer solution and the inner layer solution are first input into the outer layer and the inner layer of the coaxial needle respectively, and then the outer layer solution is injected into the receiving solution to obtain hydrous graphene oxide hollow fibers, and then dried to obtain graphene oxide hollow fibers, and then reduced to obtain graphene hollow fibers; the outer layer solution is graphene oxide solution, and the inner layer solution is PI.

[0045] S2. Preparation of phase change fiber A: heating paraffin and heat conductive additive material to melt and mix, subjecting the heated, melted and mixed materials to ultrasonic treatment, the ultrasonic time is 60 minutes, the ultrasonic frequency is 250 Hz, to obtain phase change material A with fluidity, heating phase change material A until melted and injecting it into the cavity of graphene hollow fiber, using resin to seal, to obtain phase change fiber A;

[0046] S3, preparation of phase change fiber B: acetic acid and polyacrylamide hydrogel are stirred and mixed to obtain phase change material B, the phase change material B is injected into the cavity of the graphene hollow fiber, and the end is sealed with resin to obtain phase change fiber B;

[0047] S4. Use a warp knitting machine to weave the phase change fiber A as the warp and weft to form an upper surface layer, and use the phase change fiber B as the warp and weft to weave to form a lower surface layer. The reinforcement line passes through the connection between the warp and the weft in turn to form a middle layer.

[0048] Embodiment three:

[0049] A warp knitted fabric with a temperature regulating function, comprising a surface layer and an intermediate layer, wherein the surface layer is composed of warp threads, weft threads and reinforcing threads, the warp threads and weft threads are interlaced and wound, the reinforcing threads are arranged transversely and sequentially pass through the connection between the warp threads and the weft threads, the surface layer comprises an upper surface layer and a lower surface layer, the intermediate layer is composed of reinforcing threads, connecting the upper surface layer and the lower surface layer, the warp threads and weft threads are phase change fibers, the warp threads and weft threads in the upper surface layer are phase change fibers A, and the warp threads and weft threads in the lower surface layer are phase change fibers B;

[0050] Phase change fiber A includes graphene hollow fiber A and phase change material A. The outer diameter of phase change fiber A is 0.8 mm and the inner diameter is 0.6 mm. Phase change material A is composed of 55 parts of paraffin and 5 parts of thermal conductive additive material. The number of carbon atoms in paraffin is 18 to 30, the phase change temperature is 27.5°C to 45°C, and the thermal conductive additive material is graphite powder.

[0051] The phase change fiber B includes a graphene hollow fiber B and a phase change material B. The outer diameter of the phase change fiber B is 1.1 mm and the inner diameter is 0.9 mm. The phase change material B is composed of 45 parts of acetic acid and 15 parts of polyacrylamide hydrogel.

[0052] The reinforcement wire is made of polyethylene.

[0053] A method for manufacturing a warp knitted fabric with a temperature regulating function, comprising the following steps:

[0054] S1. Hydrous graphene oxide hollow fibers are prepared by coaxial electrospinning. The outer layer solution and the inner layer solution are first input into the outer layer and the inner layer of the coaxial needle respectively, and then the outer layer solution is injected into the receiving solution to obtain hydrous graphene oxide hollow fibers, and then dried to obtain graphene oxide hollow fibers, and then reduced to obtain graphene hollow fibers; the outer layer solution is graphene oxide solution, and the inner layer solution is PS.

[0055] S2. Preparation of phase change fiber A: heating paraffin and heat conductive additive material to melt and mix, subjecting the heated, melted and mixed materials to ultrasonic treatment, the ultrasonic time is 45 minutes, the ultrasonic frequency is 250 Hz, to obtain phase change material A with fluidity, heating phase change material A until melted and injecting it into the cavity of graphene hollow fiber, using resin to seal, to obtain phase change fiber A;

[0056] S3, preparation of phase change fiber B: acetic acid and polyacrylamide hydrogel are stirred and mixed to obtain phase change material B, the phase change material B is injected into the cavity of the graphene hollow fiber, and the end is sealed with resin to obtain phase change fiber B;

[0057] S4. Use a warp knitting machine to weave the phase change fiber A as the warp and weft to form an upper surface layer, and use the phase change fiber B as the warp and weft to weave to form a lower surface layer. The reinforcement line passes through the connection between the warp and the weft in turn to form a middle layer.

[0058] Embodiment 4:

[0059] A warp knitted fabric with a temperature regulating function, comprising a surface layer and an intermediate layer, wherein the surface layer is composed of warp threads, weft threads and reinforcing threads, the warp threads and weft threads are interlaced and wound, the reinforcing threads are arranged transversely and sequentially pass through the connection between the warp threads and the weft threads, the surface layer comprises an upper surface layer and a lower surface layer, the intermediate layer is composed of reinforcing threads, connecting the upper surface layer and the lower surface layer, the warp threads and weft threads are phase change fibers, the warp threads and weft threads in the upper surface layer are phase change fibers A, and the warp threads and weft threads in the lower surface layer are phase change fibers B;

[0060] Phase change fiber A includes graphene hollow fiber A and phase change material A. The outer diameter of phase change fiber A is 0.6 mm and the inner diameter is 0.4 mm. Phase change material A is composed of 50 parts of paraffin and 5 parts of thermal conductive additive material. The number of carbon atoms in paraffin is 25 to 40, the phase change temperature is 32.5°C to 55°C, and the thermal conductive additive material is zinc oxide nano metal powder.

[0061] The phase change fiber B includes a graphene hollow fiber B and a phase change material B. The outer diameter of the phase change fiber B is 0.9 mm and the inner diameter is 0.7 mm. The phase change material B is composed of 30 parts of acetic acid and 5 parts of polyacrylamide hydrogel.

[0062] The reinforcement wire is made of polyethylene.

[0063] A method for manufacturing a warp knitted fabric with a temperature regulating function, comprising the following steps:

[0064] S1. Hydrous graphene oxide hollow fibers are prepared by coaxial electrospinning. The outer layer solution and the inner layer solution are first input into the outer layer and the inner layer of the coaxial needle respectively, and then the outer layer solution is injected into the receiving solution to obtain hydrous graphene oxide hollow fibers, and then dried to obtain graphene oxide hollow fibers, and then reduced to obtain graphene hollow fibers; the outer layer solution is graphene oxide solution, and the inner layer solution is PS.

[0065] S2. Preparation of phase change fiber A: heating paraffin and heat conductive additive material to melt and mix, subjecting the heated, melted and mixed materials to ultrasonic treatment, the ultrasonic time is 30 minutes, the ultrasonic frequency is 300 Hz, to obtain phase change material A with fluidity, heating phase change material A until melted and injecting it into the cavity of graphene hollow fiber, using resin to seal, to obtain phase change fiber A;

[0066] S3, preparation of phase change fiber B: acetic acid and polyacrylamide hydrogel are stirred and mixed to obtain phase change material B, the phase change material B is injected into the cavity of the graphene hollow fiber, and the end is sealed with resin to obtain phase change fiber B;

[0067] S4. Use a warp knitting machine to weave the phase change fiber A as the warp and weft to form an upper surface layer, and use the phase change fiber B as the warp and weft to weave to form a lower surface layer. The reinforcement line passes through the connection between the warp and the weft in turn to form a middle layer.

[0068] Comparative Example:

[0069] The warp knitted fabric is woven from phase change fibers. The phase change fibers include polypropylene hollow fibers and phase change materials. The phase change materials are paraffin with 18 to 30 carbon atoms and a phase change temperature of 27.5°C to 45°C.

[0070] The preparation method of a warp knitted fabric comprises the following steps:

[0071] S1, preparing polypropylene hollow fibers by melt-stretching method;

[0072] S2, heating the phase change material paraffin until it melts and injecting it into the cavity of the polypropylene hollow fiber, and sealing it with resin to obtain a phase change fiber;

[0073] S3. Using a warp knitting machine to weave the phase change fiber into a warp knitted fabric.

[0074] The fabrics in Examples 1 to 4 and the comparative example were placed in an environment of 40°C and 0°C, respectively, and the surface temperature was measured every 10 minutes (the upper surface of Examples 1 to 4 was measured at 40°C, and the lower surface was measured at 0°C). The test results are as follows:

[0075] Ambient temperature / ℃ 40 40 40 40 40 40 Surface temperature / ℃ 0min 10min 20min 30min 40min 50min Embodiment 1 25 25.6 26.3 27.3 28.3 29.5 Embodiment 2 25 25.8 26.5 27.3 28.1 29 Embodiment 3 25 25.5 26.2 27.5 28.8 30.5 Embodiment 4 25 25.5 26.3 27.5 29.8 32.5 Comparative Example 25 28.2 31.5 35.2 37.8 38.5 Ambient temperature / ℃ 0 0 0 0 0 0 Surface temperature / ℃ 0min 10min 20min 30min 40min 50min Embodiment 1 25 24.4 23.7 22.7 21.7 20.2 Embodiment 2 25 24.2 23.5 22.8 22 21.2 Embodiment 3 25 24.4 23.7 22.5 21.2 19.8 Embodiment 4 25 24.5 23.8 22.5 20.7 17.8 Comparative Example 25 18.5 11.3 4.5 2.8 2.1

[0076] It can be seen from the above table that the fabrics of Examples 1 to 4 have excellent temperature regulating effects at 40°C and 0°C, which are better than the fabrics in the comparative example. The fabrics in the comparative example do not have a temperature regulating effect at low temperatures. In Examples 1 to 4, the fabrics with smaller fiber diameters have a larger thermal conductivity specific surface area, and the early temperature regulating effect is more obvious. The fabrics with larger fiber diameters have a larger reserve of phase change materials, and the temperature regulating effect is more lasting.

[0077] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A warp knitted fabric with a temperature regulating function, comprising a surface layer and an intermediate layer, wherein the surface layer is composed of warp threads, weft threads and reinforcing threads, the warp threads and weft threads are interlaced and wound, the reinforcing threads are arranged transversely and sequentially pass through the connection between the warp threads and the weft threads, the surface layer comprises an upper surface layer and a lower surface layer, the intermediate layer is composed of reinforcing threads, connecting the upper surface layer and the lower surface layer, and characterized in that: The warp and weft are phase change fibers, the warp and weft in the upper surface layer are phase change fibers A, and the warp and weft in the lower surface layer are phase change fibers B; The phase change fiber A comprises a graphene hollow fiber A and a phase change material A, wherein the phase change material A is composed of the following raw materials in parts by weight: 50 to 80 parts of paraffin wax and 1 to 10 parts of a heat conductive additive material; The phase change fiber B comprises a graphene hollow fiber B and a phase change material B. The phase change material B is composed of the following raw materials in parts by weight: 30 to 70 parts of acetic acid and 10 to 30 parts of polyacrylamide hydrogel.

2. The warp knitted fabric with temperature regulating function according to claim 1, characterized in that: The carbon number of the paraffin wax is 18 to 40, and the phase transition temperature is 27.5°C to 55°C.

3. The warp knitted fabric with temperature regulating function according to claim 1, characterized in that: The thermal conductive additive material is one or more of zinc oxide micron or nano metal powder, aluminum nitride, silicon nitride, silicon carbide, aluminum oxide, magnesium oxide and graphite powder.

4. The warp knitted fabric with temperature regulating function according to claim 1, characterized in that: The phase change fiber A has an outer diameter of 0.08-1.2 mm and an inner diameter of 0.04-1.0 mm.

5. The warp knitted fabric with temperature regulating function according to claim 1, characterized in that: The phase change fiber B has an outer diameter of 0.1-1.5 mm and an inner diameter of 0.08-1.3 mm.

6. The warp knitted fabric with temperature regulating function according to claim 1, characterized in that: The material of the reinforcement line is one of polyethylene, polypropylene, polyester fiber, nylon fiber and spandex fiber.

7. A method for manufacturing a warp knitted fabric with a temperature regulating function, characterized in that: The following steps are involved: S1. Prepare hydrous graphene oxide hollow fibers by coaxial electrospinning, and prepare graphene hollow fibers by drying and reducing; S2. Preparation of phase change fiber A: heating paraffin and heat conductive additive material to melt and mix, subjecting the heated, melted and mixed materials to ultrasonic treatment to obtain phase change material A with fluidity, heating phase change material A until melted and injecting it into the cavity of graphene hollow fiber, and sealing with resin to obtain phase change fiber A; S3, preparation of phase change fiber B: acetic acid and polyacrylamide hydrogel are stirred and mixed to obtain phase change material B, the phase change material B is injected into the cavity of the graphene hollow fiber, and the end is sealed with resin to obtain phase change fiber B; S4. Use a warp knitting machine to weave the phase change fiber A as the warp and weft to form an upper surface layer, and use the phase change fiber B as the warp and weft to weave to form a lower surface layer. The reinforcement line passes through the connection between the warp and the weft in turn to form a middle layer.

8. The method for manufacturing a warp knitted fabric with a temperature regulating function according to claim 7, characterized in that: In step S1, the outer layer solution and the inner layer solution are first input into the outer layer and the inner layer of the coaxial needle respectively, and then the outer layer solution is injected into the receiving solution to obtain a hydrated graphene oxide hollow fiber, which is then dried to obtain a graphene oxide hollow fiber, and then reduced to obtain a graphene hollow fiber.

9. The method for manufacturing a warp knitted fabric with a temperature regulating function according to claim 8, characterized in that: The outer layer solution is a graphene oxide solution, and the inner layer solution is one of PS, PAA, PI, CaCl2 and 1-butyl-3-methylimidazole and 1-allyl-3-methylimidazole.

10. The method for manufacturing a warp knitted fabric with a temperature regulating function according to claim 7, characterized in that: In step S2, the ultrasonic time is 30 to 60 minutes, and the ultrasonic frequency is 200 to 350 Hz.

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