Phase-change temperature-regulating microcapsule, preparation method and application thereof

A technology of microcapsules and temperature regulation, applied in the field of materials, can solve the problems of mechanical properties of composite fibers affecting spinning performance, easy clogging, poor phase change performance, etc.

Inactive Publication Date: 2020-07-10
宁波市纤维检验所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) Since the microcapsule itself has a certain size and properties, when the microcapsule and the spinning solution are blended and spun, it is easy to affect the spinning performance and the mechanical properties of the composite fiber, and cause subsequent textile processing performance and application performance. decline
Generally, the size of the spinn

Method used

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  • Phase-change temperature-regulating microcapsule, preparation method and application thereof
  • Phase-change temperature-regulating microcapsule, preparation method and application thereof
  • Phase-change temperature-regulating microcapsule, preparation method and application thereof

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preparation example Construction

[0058] The present invention also provides a preparation method of the above-mentioned phase-change thermoregulation microcapsules, comprising the following steps:

[0059] adding ethylenediamine to distilled water to obtain an ethylenediamine solution, adding sodium lauryl sulfate to the ethylenediamine solution, and heating to obtain an aqueous solution of ethylenediamine and sodium lauryl sulfate;

[0060] The paraffin wax is slightly heated until it melts, the aqueous solution of ethylenediamine and sodium lauryl sulfate is placed under high shear conditions, and the melted paraffin wax and toluene-2,4-diisocyanate are added rapidly, and emulsified Liquid, emulsified, emulsified to obtain a stable dispersed emulsion;

[0061] Under the condition of stirring and refluxing, the emulsion is ultrasonically shaken and reacted. After the reaction is completed, it is suction filtered, washed and dried to obtain the phase-change temperature-regulating microcapsules.

[0062] As a...

Embodiment 1

[0081] A preparation method of the above-mentioned phase-change temperature-regulating microcapsules, comprising the following steps:

[0082] adding ethylenediamine to distilled water to obtain an ethylenediamine solution, adding sodium lauryl sulfate to the ethylenediamine solution, and heating to obtain an aqueous solution of ethylenediamine and sodium lauryl sulfate;

[0083]The paraffin wax is slightly heated until it melts, the aqueous solution of ethylenediamine and sodium lauryl sulfate is placed under high shear conditions, and the melted paraffin wax and toluene-2,4-diisocyanate are added rapidly, and emulsified Liquid, emulsified, emulsified to obtain a stable dispersed emulsion;

[0084] Under the condition of stirring and refluxing, the emulsion is ultrasonically shaken and reacted. After the reaction is completed, it is suction filtered, washed and dried to obtain the phase-change temperature-regulating microcapsules.

[0085] The mass ratio of the core material...

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Abstract

The invention belongs to the technical field of materials, and discloses a phase-change temperature-regulating microcapsule, a preparation method and application thereof. The phase-change temperature-regulating microcapsule comprises a phase-change material core material and a wall material wrapping the phase-change material core material, phase-change material paraffin is used as the core material, toluene-2, 4 diisocyanate (TDI) and hexamethylenediamine are used as the wall material, a hydrolysate of a synthesized copolymer styrene-maleic anhydride (SMH) is used as an emulsifier, an in-situpolymerization technology is adopted, and the phase-change material is coated with the microcapsule to prepare the phase-change temperature-regulating microcapsule. The influence of experimental parameters on microcapsule synthesis is studied through orthogonal experiments, and finally the microcapsule synthesis process is determined. The technical indexes of the process are as follows: the average particle size of the temperature-regulating microcapsule is about 1 micron, and the phase-change temperature is 34-39DEG C. The process technical indexes of the phase-change temperature-regulating fiber are as follows: the average breaking strength of the viscose-based microcapsule phase-change temperature-regulating fiber is 18.97cN/tex, and the average elongation at break is 13.1%.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a phase-change temperature-regulating microcapsule and its preparation method and application. Background technique [0002] With the improvement of people's living standards and the development of science and technology, people's demand for functional fibers is increasing day by day. Studies have shown that when the human body is in thermal equilibrium, the average skin temperature that feels comfortable is about 33.4°C, the difference between the skin temperature of any part of the body and the average skin temperature is within the range of 1.5°C to 3.0°C, and the human body feels neither cold nor hot, exceeding ± In the range of 4.5°C, the human body will feel warm and cold. [0003] Phase change materials (Phase Chang Materials, referred to as PCM) are a class of substances that absorb or release heat from the environment or release heat to the environment by virtue of th...

Claims

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Application Information

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IPC IPC(8): B01J13/18C08G18/76C08G18/32C09K5/06D01F2/08
CPCB01J13/18C08G18/3228C08G18/7614C09K5/063D01F2/08
Inventor 金美菊杨福斌刘艳春刘优娜
Owner 宁波市纤维检验所
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