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Phase change thermo-regulation fiber containing ionic liquid and preparation method of phase change thermo-regulation fiber

A technology of ionic liquid and temperature-regulating fiber, which is applied in fiber treatment, chemical instruments and methods, heat exchange materials, etc., can solve the problems of easy phase change separation, strong corrosion, high supercooling phenomenon, etc., and achieve acidity and alkalinity Controllable, good thermal stability, good thermal stability effect

Active Publication Date: 2018-08-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic phase change materials mainly include crystalline hydrates, metals, and molten salts, which have high phase change enthalpy, but high supercooling phenomenon, strong corrosion, easy phase change separation, and insufficient thermal stability

Method used

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  • Phase change thermo-regulation fiber containing ionic liquid and preparation method of phase change thermo-regulation fiber
  • Phase change thermo-regulation fiber containing ionic liquid and preparation method of phase change thermo-regulation fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Add 50g of [EMIM][BF 4 ], 2g of kaolin, and 5g of aluminum nitride were placed in a beaker and stirred and mixed, and then heated to 50°C for 40 minutes of ultrasonic vibration under the condition of ultrasonic frequency 30-50Hz, and then kept under vacuum at 50°C for 12h to obtain the core The layer material is spare.

[0039] (2) Use a screw extruder to melt polypropylene, and meter it to the spinneret assembly. The core layer material is metered and injected into the spinneret assembly by a rotary vane screw, and the fusion of the two is realized at the extrusion spinneret. Through skin-core compounding Spinning to obtain the functional precursors with the phase change material containing ionic liquid as the core layer and the fiber-forming polymer as the skin layer, wherein the spinning temperature is 240°C, the spinning speed is 600m / min, and then the functional precursors are drawn. The drawing temperature is 80° C., and the drawing ratio is 1.5 times to obta...

Embodiment 2

[0041] (1) Add 50g of [EMIM][BF 4 ], 2g of kaolin, and 5g of graphite powder were placed in a beaker and stirred and mixed, and then heated to 50°C for 40 minutes under the condition of an ultrasonic frequency of 30-50 Hz, and then subjected to ultrasonic oscillation for 40 minutes, and then kept under a vacuum of 50°C for 12 hours to obtain a core layer Material spare.

[0042] (2) Use a screw extruder to melt polypropylene, and meter it to the spinneret assembly. The core layer material is metered and injected into the spinneret assembly by a rotary vane screw, and the fusion of the two is realized at the extrusion spinneret. Through skin-core compounding Spinning to obtain the functional precursors with the phase change material containing ionic liquid as the core layer and the fiber-forming polymer as the skin layer, wherein the spinning temperature is 240°C, the spinning speed is 600m / min, and then the functional precursors are drawn. The drawing temperature is 80° C., a...

Embodiment 3

[0044] (1) Add 50g of [EMIM][BF 4], 2g of calcium oxide, and 5g of aluminum nitride were placed in a beaker and stirred and mixed, and then heated up to 50°C for 40 minutes under the condition of ultrasonic frequency of 30-50Hz, and then ultrasonically oscillated for 40min, and then kept under vacuum at 50°C for 12h to obtain the core The layer material is spare.

[0045] (2) A screw extruder is used to melt polypropylene, and it is metered and delivered to the spinneret assembly. The core layer material is metered and injected into the spinneret assembly by a rotary vane screw, and the confluence of the two is realized at the extrusion spinneret, through skin-core compounding Spinning to obtain a functional precursor with the phase change material containing the ionic liquid as the core layer and the fiber-forming polymer as the skin layer, wherein the spinning temperature is 240°C, the spinning speed is 600m / min, and then the functional precursor is drawn. The drawing tempe...

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Abstract

The invention belongs to the technical field of functional fibers and discloses a phase change thermo-regulation fiber containing an ionic liquid and a preparation method of the phase change thermo-regulation fiber. The phase change thermos-regulation fiber is of a skin-core structure, the core layer material contains the ionic liquid, a nucleating agent and a thermal conductive additive, and theskin layer material is a fiber-forming polymer. After the ionic liquid, the nucleating agent and the thermal conductive additive are stirred and mixed, a mixture is subjected to ultrasonic treatment and vacuum defoaming sequentially, and the core layer material is obtained for later use; the core layer material is molten into the fiber-forming polymer by a screw extruder, the fiber-forming polymeris metered and conveyed to a spinneret assembly, the core layer material is metered, injected into the spinneret assembly and subjected to skin-core composite spinning, and a functional protofilamentwith the ionic liquid-containing phase change material as the core layer and the fiber-forming polymer as the skin layer is obtained, and is then drafted, and the phase change thermo-regulation fibercontaining the ionic liquid is obtained. The fiber has the function of energy storage and thermo-regulation, has high designability of phase change temperature, and can be applied to the fields of extreme environment clothing, medical protection articles, sportswear and the like.

Description

technical field [0001] The invention belongs to the technical field of functional fibers, and in particular relates to a phase-change temperature-regulating fiber containing ionic liquid and a preparation method thereof. Background technique [0002] With the improvement of social economy and living standards, people's demand for comfort, health care, safety and other fibers and textile products is increasing. In order to meet people's pursuit of functional textiles, the development of high-tech fibers has become the focus of the fiber textile industry. hot spots of competition. [0003] Phase change fiber is a kind of heat storage and temperature regulating functional fiber developed by utilizing the characteristics of releasing or absorbing latent heat and keeping temperature unchanged during the phase change of matter. Applying it to textiles can absorb heat and store it inside the textile, or release the heat stored in the textile to form its own relatively independent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F6/46D01F6/90D01D5/34C09K5/06C09K5/14
CPCC09K5/063C09K5/14D01D5/34D01F1/10D01F6/46D01F6/90
Inventor 严玉蓉林超邱志明于昆
Owner SOUTH CHINA UNIV OF TECH
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