Stretchable porous fiber fabric for sensing and thermal management and method of making the same
By using wet spinning technology to prepare coaxial stretchable porous fiber fabrics, the problem of complex and costly preparation of traditional smart fabrics has been solved. This technology enables multifunctional integration and highly sensitive sensing and thermal management, thereby improving user comfort and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHEAST UNIV
- Filing Date
- 2024-06-25
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional smart fabric manufacturing methods are complex and costly, cannot adequately guarantee user comfort and safety, have limited functionality, and are difficult to integrate multiple functions and achieve stretchability.
Coaxial stretchable porous fiber fabrics are prepared using low-cost wet spinning technology. The outer shell is a stretchable polymer matrix and a high dielectric constant doped material, while the core layer is a stretchable conductive material, gallium-based liquid metal. The fabrics are then coaxially woven to form an integrated fiber with sensing and thermal management functions.
The resulting smart fabric integrates multiple functions, providing comfort, stretchability, sensing, and thermal management, along with excellent mechanical and electrical properties. This reduces manufacturing complexity and cost while improving stability and sensitivity in use.
Smart Images
Figure CN118581586B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of flexible wearables and smart fabrics, specifically relating to a stretchable porous fiber fabric for sensing and thermal management and its preparation method. Technical Background
[0002] With the increasing demands of people's lives, electronic textiles are developing rapidly, especially in areas such as energy supply, intelligent sensing, human-computer interaction, and personal thermal management. Typically, these functions are achieved through the integration of multiple functional modules on the surface of textiles or the layering of multiple functional fabrics. However, such modular integration can increase the rigidity of the fabric to some extent, thus affecting wearability; while the layering of multiple fabrics requires consideration of interlayer adhesion and durability during long-term use. Fibers are the basic unit of fabrics, therefore, the design of multi-material, multi-functional composite fibers is an advantageous method for achieving comfortable, durable, and multifunctional fabrics. Currently, various research applications of multifunctional fibers have been developed. For example, by constructing triboelectric fibers, human energy harvesting and human motion signal sensing can be achieved. However, in these cases, the core material is only used for charge conduction in energy harvesting or sensing, without developing its additional functions.
[0003] In terms of fabrication, directly impregnating functional layer materials with commercial electrodes is a common method for preparing functional fibers. However, this method often results in significant waste of electroactive materials. Furthermore, electrode-functional layer material separation during long-term use can severely hinder stability. Melt spinning and electrospinning fiber fabrication processes typically require high-temperature environments or strong electric fields, which greatly increases fabrication complexity and cost. In addition, functional fibers inevitably experience bending, deformation, folding, or stretching in different applications, which can lead to breakage or damage and shorten device lifespan. Therefore, developing long-life and multifunctional fibers through low-cost and simple fabrication methods is imperative. Summary of the Invention
[0004] The problem this invention aims to solve is to overcome the shortcomings of traditional smart fabric preparation methods, such as complexity and high cost, inability to guarantee user comfort and safety, and limited functionality. The goal is to achieve multifunctional integrated smart fabrics using a simple and low-cost preparation method, which possess comfort, stretchability, integrated sensing and thermal management, and excellent mechanical and electrical properties.
[0005] This invention proposes a stretchable porous fiber fabric for sensing and thermal management and its preparation method. The stretchable porous fiber fabric for sensing and thermal management of this invention includes a shell layer and a core layer, which are coaxial. The shell layer is a protective layer and a triboelectric layer, and is stretchable. The core layer is a conductive layer, and is both stretchable and conductive. The integrated coaxial fiber is prepared by low-cost wet spinning and then woven.
[0006] A method for preparing a stretchable porous fiber fabric for sensing and thermal management includes the following steps:
[0007] Step 1: Dissolve the stretchable polymer matrix and the high dielectric constant doped material in an organic solvent to obtain a polymer solution for preparing the shell;
[0008] Step 2: Dissolve the stretchable polymer matrix and the intrinsically stretchable conductive material LM in an organic solvent to obtain a polymer solution for preparing the core layer;
[0009] Step 3: Using coaxial wet spinning technology, coaxial fibers are prepared from the polymer solution prepared in Steps 1 and 2;
[0010] Step 4: Weave the coaxial fibers to form a stretchable porous fiber fabric.
[0011] The stretchable porous fiber fabric prepared by the method of this invention is a multifunctional smart fabric integrating sensing and thermal management. On one hand, it can be used as a single-electrode triboelectric fabric to realize the sensing and monitoring of human movement and physiological signals: the shell layer serves as a triboelectric layer, and its multi-level microporous structure facilitates the generation of triboelectric charges through contact with external objects; the core layer serves as an electrode layer for electron conduction. Furthermore, it can also be used as a strain fiber sensor: the shell layer serves as a protective layer, and the core layer serves as a strain resistance layer. On the other hand, it can be used for personal thermal management: the excellent conductivity of the core electrode enables Joule heating at low power; in addition, the LM-based nanoparticles also possess excellent photothermal properties, thereby achieving both active and passive heating functions.
[0012] Furthermore, the stretchable polymer matrix described in steps 1 and 2 includes thermoplastic polyurethane (TPU), waterborne polyurethane (WPU), polyvinylidene fluoride (PVDF), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene / butene-styrene block copolymer (SEBS).
[0013] Furthermore, the high dielectric constant doping material mentioned in step 1 is titanium dioxide (TiO2), metal nanoparticles, metal nanowires, metal-organic frameworks, carbon nanotubes, carbon black, graphene, silicon dioxide, zinc oxide, or liquid metal material LM.
[0014] Furthermore, the intrinsically stretchable conductive material LM mentioned in step 2 is a gallium-based liquid metal Ga, EGaIn, or Galinstan.
[0015] Furthermore, the stretchable polymer matrix is TPU, and the high dielectric constant doping material is TiO2; the outer shell of the coaxial fiber is a thermoplastic polyurethane (TPU): titanium dioxide (TiO2) protective layer and a triboelectric layer, and the inner core is a thermoplastic polyurethane (TPU): gallium-based liquid metal (LM) electrode layer; the method for preparing a stretchable porous fiber fabric for sensing and thermal management according to the present invention includes the following steps:
[0016] Step 1: Dissolve TPU and TiO2 in an organic solvent to obtain a polymer solution for preparing the shell, TPU:TiO2 wet spinning solution;
[0017] Step 2: Dissolve TPU and LM in an organic solvent to obtain a polymer solution for preparing the core layer, TPU:LM wet spinning solution;
[0018] Step 3: Using coaxial wet spinning technology, coaxial fibers are prepared using TPU:TiO2 wet spinning solution and TPU:LM wet spinning solution.
[0019] Furthermore, step 1 involves preparing the TPU:TiO2 wet spinning solution, specifically including:
[0020] Step 1.1: Dissolve the TPU polymer in an organic solvent to obtain a homogeneous mixed solution with a concentration of 20wt%-30wt%, which is the TPU solution.
[0021] Step 1.2: Disperse TiO2 uniformly in the TPU solution at a mass ratio of 0.1wt%-5wt% to obtain a homogeneous TPU:TiO2 solution.
[0022] The TPU:TiO2 solution obtained using this ratio has the following advantages: firstly, the concentration and viscosity are suitable, resulting in fibers with high mechanical strength, which is beneficial to improving device stability; secondly, the addition of TiO2 effectively increases the dielectric constant of the triboelectric layer, greatly enhancing the energy output of the stretchable porous fiber fabric.
[0023] The TPU:LM wet spinning solution prepared in step 2 specifically includes:
[0024] Step 2.1: Dissolve the TPU polymer in an organic solvent to obtain a homogeneous mixed solution with a concentration of 20wt%-30wt%, which is the TPU solution.
[0025] Step 2.2: Disperse LM in TPU solution at a mass ratio of 2:1 and process with a cell disruptor for 5-10 min to obtain a dispersed TPU:LM homogeneous solution.
[0026] The TPU:LM solution obtained using this ratio has two advantages: firstly, its suitable concentration and viscosity result in fibers with high mechanical strength and conductivity, which is beneficial for improving the stability and functionality of devices; secondly, gallium-based liquid metals (such as Ga, EGaIn, and Galinstan) are preferred materials for stretchable conductive fibers due to their high conductivity, biocompatibility, and excellent flowability. Compared to traditional carbon-based and metallic conductive materials (such as silver nanowires or carbon nanotubes), it can maintain its flowability to support its high conductivity under large deformations.
[0027] Furthermore, the organic solvent is any one of acetone, N-methylpyrrolidone (NMP), dimethylacetamide (DMAc), N,N-dimethylformamide (DMF), triethyl phosphate (TEP), and methyl ethyl ketone (MEK).
[0028] Furthermore, step 3, the preparation of coaxial fibers, specifically includes: setting up a wet spinning equipment, using TPU:TiO2 wet spinning solution and TPU:LM wet spinning solution to prepare coaxial stretchable porous fibers; the pressure of the metering pump used to prepare the coaxial fiber shell layer is set to 0.4-0.5 MPa, and the pressure of the metering pump used to prepare the coaxial fiber core layer is set to 0.2-0.35 MPa, and then the fibers enter the coagulation bath through the spinneret; the coagulation bath is a deionized water and calcium chloride aqueous solution; after being placed in the coagulation bath for 8-12 hours, the fibers are dried in air to obtain stretchable porous coaxial fibers.
[0029] When the spinning solutions TPU:TiO2 and TPU:LM are extruded from the coaxial needle and come into contact with the coagulation bath, the polymer begins to precipitate from the solution due to the rapid exchange of solvents, forming solid fibers, while the solvent is diluted by the coagulation bath. Compared with traditional melt spinning, thermal drawing, and electrospinning fiber manufacturing methods, the fiber preparation method used in this invention has a simple preparation process, a mild preparation environment, and can be used for large-area, low-cost preparation. Compared with the preparation method of directly using commercial fibers to impregnate functional layers, the functional layer-electrode layer integrated coaxial fiber obtained by wet spinning in this invention effectively solves the defect of functional layer-electrode layer material separation and shedding during long-term use, and can support its long-term use and stability under cyclic washing.
[0030] During the entire wet spinning process, phase separation is fundamental to fiber formation, and due to the rapid precipitation of solvent from the polymer, pores or voids form within the fiber. This porous structure increases the specific surface area of the triboelectric shell, effectively enlarging the contact area and thus enabling greater energy output and providing high sensitivity over a wide force sensing range. This microstructure is fabricated concurrently with the fiber production process, eliminating the need for additional microstructure fabrication techniques and effectively reducing manufacturing costs.
[0031] Beneficial effects: Compared with existing smart fabrics, the stretchable porous fiber fabric for sensing and thermal management of the present invention and its preparation method have the following advantages:
[0032] 1. The process of coaxial wet spinning of TPU-based fibers has the advantages of being simple, economical, easy to operate, and capable of large-area preparation compared with traditional melt processing, hot drawing, electrospinning, etc. This is because the process only requires the preparation of the spinning solution and can be completed in a coagulation bath such as water at room temperature without the presence of an electric field.
[0033] 2. The integrated porous stretchable fiber fabric obtained by coaxial wet spinning does not require additional coating compared to the method of coating commercial electrodes with functional materials. Therefore, it has the advantages of comfortable wear and stable performance (breathable, wear-resistant, and washable).
[0034] 3. The micro-nano structures introduced by phase separation during wet spinning are simpler, easier to operate, and cheaper than conventional micro-nano structure preparation methods.
[0035] 4. The ultra-large specific surface area provided by the multi-level microporous structure gives the stretchable porous fiber fabric high sensitivity and fast response time.
[0036] 5. Stretchable fiber electrodes are fabricated by combining a stretchable matrix and an intrinsically stretchable conductive material (LM). Compared with traditional polymer electrodes, they have a wider range of stretchable conductivity stability and effectively avoid the sharp decline in conductivity of fibers under stretching conditions. This is because LM can flow freely with the deformation of the substrate material.
[0037] 6. The high electrical conductivity imparted by the liquid metal enables the stretchable porous fiber fabric to reliably perform Joule heating at low power; the excellent photothermal efficiency of the liquid metal particles endows the stretchable porous fiber fabric with passive heating function.
[0038] 7. Compared with traditional smart fabrics, fiber fabrics that integrate sensing and thermal management can not only sense human body signals, but also provide a more personalized and comfortable wearing experience, improving the overall performance and application range of the fabric. Attached Figure Description
[0039] Figure 1 This is a schematic diagram of a method for preparing stretchable porous fiber fabrics;
[0040] Figure 2 This is a field scanning electron microscope (SEM) image of a stretchable porous coaxial fiber;
[0041] Figure 3 It is a stress-fracture curve of a stretchable porous coaxial fiber.
[0042] Figure 4 It is a cyclic strain curve of a stretchable porous coaxial fiber;
[0043] Figure 5 It is a current change curve of stretchable porous coaxial fiber during repeated 0-100% stretching;
[0044] Figure 6 This is a schematic diagram of the structure of a stretchable porous fiber fabric;
[0045] Figure 7 It is a sensitivity curve of a stretchable porous fiber fabric;
[0046] Figure 8 It is a response / recovery time curve of a stretchable porous fiber fabric;
[0047] Figure 9 It is a Joule heating curve of a stretchable porous fiber fabric.
[0048] Figure 10 It is a photothermal curve of a stretchable porous fiber fabric.
[0049] 1. Shell layer; 2. Core layer; 3. Cotton fiber fabric; 4. Stretchable porous fiber fabric. Detailed Implementation
[0050] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described are only some embodiments of the present invention.
[0051] Example 1
[0052] A method for preparing a stretchable porous fiber fabric for sensing and thermal management includes the following steps.
[0053] Step 1: Dissolve the stretchable polymer matrix and the high dielectric constant doped material in an organic solvent to obtain a polymer solution for preparing shell 1;
[0054] Step 2: Dissolve the stretchable polymer matrix and the intrinsically stretchable conductive material LM in an organic solvent to obtain a polymer solution for preparing the core layer 2;
[0055] Step 3: Using coaxial wet spinning technology, coaxial fibers are prepared from the polymer solution prepared in Steps 1 and 2;
[0056] Step 4: Weave the coaxial fibers to form a stretchable porous fiber fabric.
[0057] The stretchable polymer matrix is thermoplastic polyurethane (TPU), waterborne polyurethane (WPU), polyvinylidene fluoride (PVDF), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene / butene-styrene block copolymer (SEBS), etc.
[0058] High dielectric constant doped materials can be titanium dioxide (TiO2), metal nanoparticles (Au, Ag, Cu), metal nanowires (Au NWs, Ag NWs, Cu NWs), metal-organic frameworks (MOFs), carbon nanotubes (CNTs), carbon black (CB), graphene, silicon dioxide (SiO2), zinc oxide (ZnO), and LM.
[0059] Intrinsically stretchable conductive materials (LMs) can be made from materials such as high-purity gallium (Ga) and gallium indium tin alloy (Galinstan).
[0060] Example 2
[0061] like Figure 1 As shown, this invention discloses a method for preparing a stretchable porous fiber fabric for sensing and thermal management, wherein the fiber comprises a TPU:TiO2 shell layer and a TPU:LM core layer, the shell layer and the core layer being coaxial; the method includes the following steps:
[0062] Step 1 involves preparing a TPU:TiO2 wet spinning solution for preparing shell layer 1, and a TPU:LM wet spinning solution for preparing core layer 2; specifically:
[0063] TPU polymer was dissolved in the organic solvent DMF to obtain a homogeneous mixed solution with a concentration of 20 wt%. Subsequently, TiO2 was uniformly dispersed in the above TPU solution at a mass ratio of 3 wt% to obtain a TPU:TiO2 homogeneous solution.
[0064] For the preparation of the wet spinning core layer solution, a 20 wt% TPU / DMF mixed solution was first obtained. Then, LM was dispersed in the above TPU solution at a mass ratio of 2:1, and treated with a cell disruptor for 10 min to obtain a dispersed TPU:LM homogeneous solution. Here, LM is a gallium-indium alloy with a melting point of 15.7 °C.
[0065] Step 2: Coaxial stretchable porous fibers are prepared using TPU:TiO2 wet spinning solution and TPU:LM wet spinning solution. The metering pump pressure for preparing the coaxial fiber shell is set to 0.4-0.5 MPa, and the metering pump pressure for preparing the coaxial fiber core is set to 0.2-0.35 MPa. Then, the fibers are immersed in a deionized water coagulation bath through a coaxial needle, washed and dried to obtain a stretchable triboelectric layer-electrode layer integrated coaxial fiber.
[0066] Step 3: Using the traditional plain weave method, a stretchable porous fiber fabric is obtained.
[0067] The aforementioned stretchable porous coaxial fibers are woven to obtain stretchable porous fiber fabrics. The weaving method can be traditional fabric weaving methods such as plain weave, knitting, or embroidery.
[0068] The TPU:TiO2 / TPU:LM stretchable porous coaxial fiber used in this invention is composed of liquid metal and polymer materials, combining most of the advantages of liquid metal, such as high electrical conductivity, intrinsic stretchability (flowability), high chemical and thermal stability, and biocompatibility, with the advantages of polymer materials, such as high dielectric constant, easy processing, stretchability, biocompatibility, and structural controllability. The resulting stretchable porous fiber fabric exhibits high stretchability (>500%) and biocompatibility, while also possessing electrical conductivity stability under large tensile deformation. This is because LM is a flowable, highly conductive material; therefore, as the fiber is stretched, the LM flows in the direction of fiber stretching, which is the main difference from other conventional conductive materials.
[0069] Figure 2 Scanning electron microscope (SEM) images of the prepared coaxial TPU:TiO2 / TPU:LM porous fibers are presented, revealing the internal pore structure of the fibers, which is caused by phase separation during the wet spinning process. When the spinning solutions TPU:TiO2 and TPU:LM are extruded from the coaxial needle and come into contact with the coagulation bath, the polymer begins to precipitate from the solution due to the rapid exchange of solvents, forming porous solid fibers.
[0070] Figure 3 Stress-fracture curves of coaxial TPU:TiO2 / TPU:LM porous fibers are presented. The figures show that the coaxial TPU:TiO2 / TPU:LM stretchable porous fibers fracture at 500%. Figure 4 The stress-strain cycle curves of the coaxial TPU:TiO2 / TPU:LM stretchable porous fiber provided show that the stretchable porous fiber proposed in this invention has good mechanical properties and excellent deformability.
[0071] Figure 5 The current variation of the coaxial stretchable porous fiber within the range of 0-100% stretching (applied voltage is 1V) is given. The insignificant current variation ensures the working stability of the stretchable porous fiber fabric under various mechanical deformations.
[0072] Figure 6 The structural diagram of the stretchable porous fiber fabric is given, which is formed by plain weaving of the above-mentioned coaxial TPU:TiO2 / TPU:LM stretchable porous fibers. Figure 7The short-circuit current output generated by this stretchable porous fiber fabric as a single-electrode triboelectric sensor under different forces and commercial PTFE fabric is presented, and the sensitivity is calculated. The excellent performance is attributed to the high dielectric constant TiO2 doping and the hierarchical microporous structure of the triboelectric layer. Figure 8 As can be seen, this stretchable porous fiber fabric provides a fast response / recovery time of 100ms.
[0073] Figure 9 The Joule heating curve of the stretchable porous fiber fabric at 1.4V is given, which shows that the fabric can be rapidly heated to 85°C in about 20 seconds.
[0074] Example 3
[0075] This invention discloses a method for preparing a stretchable porous fiber fabric for sensing and thermal management, wherein the fiber comprises an SEBS:LM shell layer and an SEBS:LM core layer, the shell layer and the core layer being coaxial; the method includes the following steps:
[0076] Step 1 involves preparing the SEBS:LM wet spinning solution for preparing shell layer 1, and preparing the SEBS:LM wet spinning solution for preparing core layer 2; specifically:
[0077] SEBS polymer was dissolved in the organic solvent tetrahydrofuran (THF) to obtain a homogeneous mixed solution with a concentration of 25 wt%. LM was then uniformly dispersed in the SEBS solution at a mass ratio of 1 wt% to obtain a homogeneous SEBS:LM solution. Here, LM is a gallium-indium alloy with a melting point of 15.7 °C.
[0078] For the preparation of the wet-spinning core layer solution, a 25 wt% TPU / DMF mixed solution was first obtained. Then, LM was dispersed in the aforementioned SEBS solution at a mass ratio of 2:1, and the solution was treated with a cell disruptor for 10 min to obtain a dispersed homogeneous SEBS:LM solution. Here, LM is a gallium-indium alloy with a melting point of 15.7 °C.
[0079] Step 2: Coaxial stretchable porous fibers are prepared using SEBS:LM wet spinning solutions with different LM doping concentrations. The metering pump pressure for preparing the coaxial fiber shell is set to 0.5 MPa, and the metering pump pressure for preparing the coaxial fiber core is set to 0.2 MPa. Then, the fibers are immersed in a deionized water coagulation bath through a coaxial needle, washed and dried to obtain a stretchable triboelectric layer-electrode layer integrated coaxial fiber.
[0080] Here, we explain the different doping concentrations of LM: low concentration doping of the shell layer is used to enhance the dielectric constant of the triboelectric layer, thereby obtaining higher signal sensitivity; high concentration doping of the core layer is used to obtain a stable conductive layer.
[0081] Step 3: Use traditional fiber knitting methods to obtain a stretchable porous fiber fabric.
[0082] Figure 10 The photothermal curves of stretchable porous fiber fabrics are presented, showing good photothermal performance compared with ordinary cotton fiber fabrics.
[0083] It should be noted that the above descriptions are only some embodiments of the present invention, not all embodiments, and are merely examples. They should not be used to limit the scope of protection of the present invention. Modifications or substitutions made without departing from the spirit of the present invention are all within the scope of protection of the present invention.
Claims
1. A method for preparing a stretchable porous fiber fabric for sensing and thermal management, characterized in that, The fiber is a coaxial fiber, comprising a shell and a core layer, wherein the shell and core layer are coaxial, and the method includes the following steps: Step 1 involves dissolving the stretchable polymer matrix TPU and the high dielectric constant doped material in an organic solvent to obtain a polymer solution for preparing the shell, specifically: Step 1.1: Dissolve the stretchable polymer matrix TPU in an organic solvent to obtain a homogeneous mixed solution with a concentration of 20 wt%-30 wt%, which is the TPU solution; Step 1.2: The high dielectric constant doped material is uniformly dispersed in the TPU solution at a mass ratio of 0.1wt%-5wt% to obtain a homogeneous solution of TPU and high dielectric constant doped material, i.e., the polymer solution used to prepare the shell. The high dielectric constant doped material is titanium dioxide (TiO2), metal nanoparticles, metal nanowires, metal-organic frameworks, carbon nanotubes, carbon black, graphene, silicon dioxide, zinc oxide, or liquid metal material LM. Step 2 involves dissolving the stretchable polymer matrix TPU and liquid metal LM in an organic solvent to obtain a polymer solution for preparing the core layer, specifically: Step 2.1: Dissolve the stretchable polymer matrix TPU in an organic solvent to obtain a homogeneous mixed solution with a concentration of 20 wt%-30 wt%, which is the TPU solution. Step 2.2: Disperse LM in TPU solution at a mass ratio of 2:1 and treat with a cell disruptor for 5-10 min to obtain a dispersed TPU:LM homogeneous solution, which is the polymer solution used to prepare the core layer. The liquid metal material LM is a gallium-based liquid metal, Ga, EGaIn, or Galinstein; Step 3: Using the coaxial wet spinning method, coaxial stretchable porous fibers are prepared from the polymer solution prepared in Step 1 and Step 2. Step 4: Weave the coaxial stretchable porous fibers to form a stretchable porous fiber fabric.
2. The method for preparing a stretchable porous fiber fabric for sensing and thermal management according to claim 1, characterized in that, Step 3 involves preparing coaxial stretchable porous fibers, specifically including: setting up a wet spinning equipment, setting the metering pump pressure for preparing the coaxial fiber shell to 0.4-0.5 MPa, setting the metering pump pressure for preparing the coaxial fiber core to 0.2-0.35 MPa, and then introducing the fibers into the coagulation bath through the spinneret; after being placed in the coagulation bath for 8-12 hours, drying them in the air to obtain stretchable porous coaxial fibers.
3. The method for preparing a stretchable porous fiber fabric for sensing and thermal management according to claim 2, characterized in that, The coagulation bath is a deionized water and calcium chloride aqueous solution.
4. A stretchable porous fiber fabric for sensing and thermal management, characterized in that, The stretchable porous fiber fabric for sensing and thermal management is obtained based on the preparation method of any one of claims 1-3.