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CN-122013355-A - Temperature-regulating textile material and preparation method thereof

CN122013355ACN 122013355 ACN122013355 ACN 122013355ACN-122013355-A

Abstract

The invention discloses a temperature-regulating textile material and a preparation method thereof, wherein the preparation method comprises the following steps: preparing inorganic/organic composite wall material phase-change energy storage microcapsules, carrying out surface modification treatment on the microcapsules, mixing the modified microcapsules with aramid fiber or polyimide, adding a heat conduction reinforcing agent to form spinning solution, spinning, stretching and heat treatment, and compounding the spinning solution with a reinforced composite material through a three-dimensional weaving, laminating or blending implantation process. According to the invention, the temperature resistance of the microcapsule exceeds 300 ℃ through the design of the composite wall material, the problem that the traditional organic wall material cannot resist high-temperature spinning is solved, the interfacial bonding strength and the thermal management efficiency are remarkably improved through the synergistic effect of the surface modification and the heat conduction reinforcing agent, the phase change enthalpy of the finally prepared temperature-regulating textile material reaches 10-100J/g, the temperature-regulating response time is shortened to 2-3 minutes, the tensile strength reaches 260-400 MPa, the temperature-regulating function and the mechanical property are excellent, and the temperature-regulating composite wall material can be widely applied to the fields of military protection and civil temperature-regulating textiles.

Inventors

  • SHEN XIAOWEN
  • NIU JIANCHAO
  • SHEN YONGLIN

Assignees

  • 吴江亚西玛纺织有限公司

Dates

Publication Date
20260512
Application Date
20260109

Claims (10)

  1. 1. A method for preparing a temperature-regulating textile material, comprising the steps of: (1) Preparing a phase-change energy-storage microcapsule, namely mixing a core material and an emulsifying agent, stirring and emulsifying at a rotating speed of 1500-3500 r/min for 1-3 hours at 80-120 ℃ until the core material is completely emulsified, then adding an initiator and a reaction monomer, stirring and refluxing for 4-6 hours at 80-120 ℃ to form an organic wall material microcapsule, then adding an inorganic wall material subjected to oxidation treatment, heating in a water bath at 80-100 ℃ for 2-4 hours to perform a composite reaction, and finally cooling, suction filtering, washing and drying to obtain the inorganic/organic composite wall material phase-change energy-storage microcapsule; (2) Dispersing the microcapsule in an ethanol solvent, adding a silane coupling agent accounting for 1-5% of the mass of the microcapsule, stirring at 60-80 ℃ for reaction for 1-2 hours, and then washing and drying to obtain the surface-modified phase-change energy-storage microcapsule; (3) Preparing a spinning solution, namely mixing the surface modified phase change energy storage microcapsule obtained in the step (2) with a high-performance polymer, adding a heat conduction reinforcing agent accounting for 0.5-5% of the total mass of the spinning solution, and mixing by a high-speed shearing dispersing instrument to form a uniform and stable spinning solution, wherein the mass percentage of the phase change energy storage microcapsule in the spinning solution is 5-40%; wherein the high-performance polymer is selected from one or two of aramid fiber and polyimide; wherein the heat conduction enhancer is at least one selected from boron nitride, carbon nano tube and alumina; (4) Spinning, namely spinning the spinning solution into temperature-regulating fibers by adopting a melt spinning method or a solution spinning method; (5) Stretching and heat treating the temperature-regulated fiber, namely stretching the fiber at 100-200 ℃ with a stretching ratio of 1.5-3.0, and then heat treating the fiber at 150-250 ℃ for 10-30 minutes; (6) And compounding, namely combining the temperature regulating fibers with the continuous or discontinuous fiber reinforced composite material through a three-dimensional braiding, laminating or blending implantation process to form the temperature regulating textile material.
  2. 2. The method of claim 1, wherein the particle size of the phase-change energy-storage microcapsule is 500-3000 nm.
  3. 3. The method for preparing the phase-change energy-storage microcapsule according to claim 1, wherein the mass percentage of the phase-change energy-storage microcapsule in the spinning solution is 10-30%.
  4. 4. The method of claim 1, wherein the mass ratio of the inorganic wall material to the organic wall material in the wall material of the phase-change energy storage microcapsule is (0.1-2): 1.
  5. 5. The preparation method of the composite material according to claim 1, wherein the core material is one or more selected from paraffin wax, soybean wax, polyethylene glycol, aliphatic hydrocarbon, fatty acid and aliphatic alcohol, the organic wall material is one selected from polyurethane, polymethyl methacrylate, phenolic resin and polystyrene, and the inorganic wall material is at least one selected from graphene, carbon nano tube and silicon carbide.
  6. 6. The method for preparing the phase-change energy-storage microcapsule according to claim 1, wherein the phase-change enthalpy of the phase-change energy-storage microcapsule is 150-250J/g.
  7. 7. A temperature-regulating textile material prepared by the method as claimed in any one of claims 1 to 6, which is characterized by comprising a temperature-regulating fiber and a continuous or discontinuous fiber reinforced composite material, wherein the temperature-regulating fiber contains surface-modified phase-change energy storage microcapsules and a heat conduction reinforcing agent, and is formed by at least one high-performance polymer, and the high-performance polymer is one or two selected from aramid fibers and polyimide.
  8. 8. The temperature-regulating textile material according to claim 7, wherein the particle size of the phase-change energy-storage microcapsules is 500-3000 nm.
  9. 9. The temperature-regulating textile material according to claim 7, wherein the phase-change energy-storage microcapsules account for 5-35% by mass of the temperature-regulating fiber.
  10. 10. The temperature-regulating textile material according to claim 7, wherein the phase transition enthalpy of the temperature-regulating textile material is 10-100J/g.

Description

Temperature-regulating textile material and preparation method thereof Technical Field The invention belongs to the technical field of textile materials, and particularly relates to a temperature-regulating textile material and a preparation method thereof. Background With the development of technology and the improvement of living standard, the comfort and the functionality of textile materials are increasingly required by people. In the military field, soldiers need to maintain combat capability in extreme temperature environments, and in the civil field, consumers also put higher demands on the temperature control comfort of clothing. The phase-change temperature regulating technology provides a temperature regulating function for human bodies through the characteristic of absorbing or releasing latent heat in the phase-change process of the material, and becomes a hot spot of current research. At present, the phase-change temperature-regulating fiber mainly adopts a phase-change energy storage microcapsule technology, and a phase-change material is wrapped in microcapsules and mixed with spinning solution for spinning. However, the prior art has the problems that firstly, the temperature resistance of the organic wall material of the traditional phase-change microcapsule is poor, the temperature resistance range is usually only 120-200 ℃, and the processing requirements of high-performance polymers (such as aramid fibers, polyimide and the like) cannot be met. The spinning temperature of the high-performance polymer is often up to more than 280 ℃, the traditional microcapsule can be decomposed and failed at the temperature, and secondly, the enthalpy value of the traditional phase-change temperature-regulating fiber is generally low, usually only 8-10J/g, so that the traditional phase-change temperature-regulating fiber is difficult to provide a remarkable temperature-regulating effect in actual use. The method is mainly characterized in that the addition amount of microcapsules is limited, excessive microcapsules can seriously influence the spinnability and mechanical properties of fibers, in addition, the interface compatibility of the traditional phase-change microcapsules and a spinning matrix is poor, so that the microcapsules are easy to crack in the spinning process, the phase-change materials leak, the temperature adjusting effect is influenced, the mechanical properties of the fibers are reduced, finally, the prior art is limited to the preparation of single fibers, and the structural composite design of the composite materials is lacked and enhanced, so that the mechanical strength, durability and other comprehensive properties of the final textile materials are insufficient when the temperature adjusting requirements are met, and the comprehensive performance requirements under special application scenes are difficult to meet. Therefore, developing a temperature-regulating textile material preparation method which can be compatible with a high-temperature spinning process, remarkably improve the addition amount and interface bonding strength of microcapsules and realize effective compounding with a reinforcing material becomes a technical problem to be solved in the field. Disclosure of Invention The invention provides a temperature-regulating textile material and a preparation method thereof aiming at the technical problems. In order to achieve the above purpose, the technical scheme provided by the invention is as follows: a method for preparing a temperature-regulating textile material, comprising the steps of: (1) Preparing a phase-change energy-storage microcapsule, namely mixing a core material and an emulsifying agent, stirring and emulsifying at a rotating speed of 1500-3500 r/min for 1-3 hours at 80-120 ℃ until the core material is completely emulsified, then adding an initiator and a reaction monomer, stirring and refluxing for 4-6 hours at 80-120 ℃ to form an organic wall material microcapsule, then adding an inorganic wall material subjected to oxidation treatment, heating in a water bath at 80-100 ℃ for 2-4 hours to perform a composite reaction, and finally cooling, suction filtering, washing and drying to obtain the inorganic/organic composite wall material phase-change energy-storage microcapsule; (2) Dispersing the microcapsule in an ethanol solvent, adding a silane coupling agent accounting for 1-5% of the mass of the microcapsule, stirring at 60-80 ℃ for reaction for 1-2 hours, and then washing and drying to obtain the surface-modified phase-change energy-storage microcapsule; (3) Preparing a spinning solution, namely mixing the surface modified phase change energy storage microcapsule obtained in the step (2) with a high-performance polymer, adding a heat conduction enhancer accounting for 0.5-5% of the total mass of the spinning solution, and adopting a high-speed shearing dispersing agent to mix to form a uniform and stable spinning solution, wherein the mass percentage o