Preparation method and application of intelligent heat storage and temperature regulation nano aerogel fiber

A nano-aerogel, heat storage and temperature adjustment technology, applied in the direction of fiber type, fiber treatment, heat exchange materials, etc., can solve the problems of poor durability, high cost, high preparation conditions, etc., to achieve phase change stability and durability Excellent performance, maintain energy storage capacity, and long-term wearing comfort

Active Publication Date: 2021-10-08
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Although the above-mentioned patents have improved the conductivity and stability of the fiber to a certain extent, there are still some obvious deficiencies: first, because they all use plant fiber as the base material and do not have the characteristics of high temperature stability, so using this The durability of textiles made from fibers is relatively poor
On the other hand, due to the large pores formed by the overlapping of kapok fibers and the lack of barriers from the outer structural layer, the phase change material is easy to leak from the fibers during use, which will also lead to relatively poor durability. There was a problem
Second, the overall fiber is less conductive due to the high contact resistance between the carbon nanotubes that limits the conductivity of the carbon nanotubes.
Third, the preparation conditions are relatively high, and the preparation process is extremely complex and time-consuming, with low production efficiency and high cost

Method used

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  • Preparation method and application of intelligent heat storage and temperature regulation nano aerogel fiber
  • Preparation method and application of intelligent heat storage and temperature regulation nano aerogel fiber
  • Preparation method and application of intelligent heat storage and temperature regulation nano aerogel fiber

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Effect test

Embodiment 1

[0038] Such as Figure 1-6 Shown, a kind of preparation method of nanometer airgel fiber of intelligent heat storage temperature regulation, comprises the following steps:

[0039] S1. The fiber is aramid fiber. In an alkaline environment, the nitrogen atoms on the amide group of the aramid fiber are deprotonated to achieve macroscopic fiber dispersion, forming nano-monomers and stably existing aramid nano-monomer dispersion liquid, that is, aramid nanofiber dispersion; in order to obtain 1wt% aramid nanofiber dispersion, take 0.45g aramid fiber and the same amount of tert-butanol and methanol into a flask filled with 40mlDMSO, and mechanically stir for 3h to obtain 1wt% dispersion;

[0040] S2. Then the nano-monomer dispersion liquid obtained in step S1 is 0.03mm / s at an extrusion speed, and the coagulation bath liquid adopts 10wt% dimethyl sulfoxide aqueous solution, and wet spinning becomes aramid fiber nanofiber, nanofiber The extruded diameter is controlled to be 1mm to...

Embodiment 2

[0050] S1. The fiber is aramid fiber. In an alkaline environment, the nitrogen atoms on the amide group of the aramid fiber are deprotonated to achieve macroscopic fiber dispersion, forming nano-monomers and stably existing aramid nano-monomer dispersion liquid, that is, aramid nanofiber dispersion; in order to obtain 1wt% aramid nanofiber dispersion, take 0.45g of aramid fiber and an equivalent amount of tert-butanol and methanol into a flask filled with 40ml of DMSO, and mechanically stir for 4h to obtain 1wt% dispersion;

[0051] S2. Then the nano-monomer dispersion liquid obtained in step S1 is 0.03mm / s at an extrusion speed, and the coagulation bath liquid adopts 10wt% dimethyl sulfoxide aqueous solution, and wet spinning becomes aramid fiber nanofiber, nanofiber The extruded diameter is controlled to be 1mm to obtain primary airgel fibers;

[0052] S3. The primary airgel fiber obtained in step S2 is freeze-dried in a freeze dryer to remove water in the fiber, and the fr...

Embodiment 3

[0056] S1. The fiber is aramid fiber. In an alkaline environment, the nitrogen atoms on the amide group of the aramid fiber are deprotonated to achieve macroscopic fiber dispersion, forming nano-monomers and stably existing aramid nano-monomer dispersion liquid, that is, aramid nanofiber dispersion; in order to obtain 1wt% aramid nanofiber dispersion, take 0.45g aramid fiber and the same amount of tert-butanol and methanol into a flask filled with 40mlDMSO, and mechanically stir for 5h to obtain 1wt% dispersion;

[0057] S2. Then the nano-monomer dispersion liquid obtained in step S1 is 0.03mm / s at an extrusion speed, and the coagulation bath liquid adopts 10wt% dimethyl sulfoxide aqueous solution, and wet spinning becomes aramid fiber nanofiber, nanofiber The extruded diameter is controlled to be 1mm to obtain primary airgel fibers;

[0058] S3. The primary airgel fiber obtained in step S2 is freeze-dried for 20 hours in a freeze dryer to obtain a nano-airgel fiber substrate...

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Abstract

The invention particularly relates to a preparation method of intelligent heat storage and temperature regulation nano aerogel fiber. The preparation method comprises the following steps of S1, firstly preparing a nanofiber monomer dispersion liquid; S2, performing wet spinning on the nano monomer dispersion liquid to form nano fiber, so as to obtain nascent aerogel fiber; S3, freeze-drying the nascent aerogel fiber to obtain a nano aerogel fiber base material; S4, soaking and airing the nano aerogel fiber base material in a silver nanowire solution, and then soaking and airing the nano aerogel fiber base material in an MXene solution to obtain conductive aerogel fiber; and S5, soaking the conductive aerogel fiber in a phase change solution to obtain the intelligent heat storage and temperature regulation nano aerogel fiber. The invention further discloses application of the fiber in human heat management. The preparation method is simple and environment-friendly, and the intelligent heat storage and temperature regulation nano aerogel fiber prepared by the method has excellent conductivity, excellent heat storage and temperature regulation performance, excellent phase change stability and durability, simple preparation process and low preparation cost.

Description

technical field [0001] The invention relates to the technical field of heat storage and temperature regulation conductive intelligent fiber, in particular to a preparation method and application of an intelligent heat storage and temperature regulation nano airgel fiber. Background technique [0002] In recent years, the application of phase change materials in the field of textiles and clothing, especially in the application of temperature-adjusting textiles and clothing has attracted more and more attention. The so-called "temperature-adjusting textile" is a new type of intelligent textile, which can change from the environment to the "liquid-solid" or "solid-solid" reversible change of the phase change material contained in the textile according to the change of the external environment temperature. Absorb heat and store it inside the textile, or release the heat stored in the textile, and form a microclimate with a basically constant temperature around the textile, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M15/53D06M15/643D06M11/74C09K5/06D06M101/36
CPCD06M11/83D06M15/53D06M15/643D06M11/74C09K5/063D06M2101/36
Inventor 苗锦雷曲丽君左杏薇范婷婷刘旭华范强
Owner QINGDAO UNIV
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