Heat-storage and heat-preservation microcapsules and preparation method and application thereof

A technology of microcapsules and heat storage, applied in the direction of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., can solve the problems of difficult breakthroughs in wear resistance and durability of microcapsule shells, leakage of phase change materials, and overall performance of textiles Large changes and other problems, to achieve the effect of maintaining temperature control function, large phase change energy, wear resistance and durability

Active Publication Date: 2011-04-06
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to make a breakthrough in the wear resistance and durability of the microcapsule shell, and it is prone to leakage of the internal phase change material, and the overall performance of the textile such as oil spots and hand feeling on the textile changes greatly.

Method used

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  • Heat-storage and heat-preservation microcapsules and preparation method and application thereof
  • Heat-storage and heat-preservation microcapsules and preparation method and application thereof
  • Heat-storage and heat-preservation microcapsules and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] At 40°C, 50 parts of No. 30 paraffin, 2 parts of Span 80, 3 parts of Tween 80, and 200 parts of distilled water were homogenized at high speed in a high-speed shear mixing emulsifier, and the homogenization rate was 10000 rpm. After 30 minutes, the Pour the homogenized emulsion into a three-necked flask, put it into a constant temperature water bath, and raise the temperature to 80°C under stirring conditions, and add 0.5 parts of ammonium persulfate and 20 parts of methyl acrylate to form the inner wall. After cooling, adjust the pH to 2-4 with acetic acid, add 80 parts of etherified melamine resin dropwise at a stirring speed of 300 rpm, raise the temperature to 55°C, keep it warm for 1-2 hours to cool the outer layer, and neutralize it with ammonia water to pH =7, to obtain heat storage and heat preservation microcapsule solution, and spray-dry to obtain No. 1 powdery heat storage and heat preservation microcapsules.

Embodiment 2

[0037] Heat storage and heat preservation finishing of pure knitted fabrics:

[0038] Process: padding method: padding (two dipping and two rolling, liquid carrying capacity 70%)→drying (90~100℃) for 2min

[0039] Padding solution prescription:

[0040] Thermal storage and thermal insulation microcapsule No. 1 50g / L

[0041] Formaldehyde-free super soft adhesive 30g / L

[0042] The color of the pure cotton before and after finishing is basically the same, and the hand feeling has little change. The formaldehyde content is 6.7mg / kg. After the knitted fabric is washed 20 times, the Cro value is only reduced by 0.3 after being tested by an incubator.

Embodiment 3

[0044] At 55°C, 10 parts of No. 52 paraffin, 40 parts of No. 30 paraffin, 6 parts of sodium lauryl sulfate, 804 parts of Tween, and 300 parts of distilled water were homogenized at high speed in a high-speed shear mixing emulsifier, and the homogenization rate was 10000rpm After 30 minutes, pour the homogenized emulsion into a three-necked flask, put it in a constant temperature water bath, and raise the temperature to 80°C under stirring conditions, add 0.5 parts of potassium persulfate and 22 parts of ethyl methacrylate to make the inner layer After the wall is cooled, adjust the pH to 3-4 with citric acid, add 80 parts of etherified melamine resin dropwise at a stirring speed of 300 rpm, raise the temperature to 55°C, and keep it warm for 1-2 hours to build the outer single-layer wall; After the system was cooled to room temperature, 80 parts of etherified melamine resin was added dropwise under agitation, the temperature was raised to 65°C, and the temperature was kept to c...

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Abstract

The invention relates to phase-change energy-storage microcapsules and a preparation method and application thereof, in particular to heat-storage and heat-preservation microcapsules by taking a core material as a phase-change energy-storage material, and a preparation method and application thereof. Each microcapsule consists of a core, an internal nuclear shell and an external nuclear shell, wherein the core material is an organic phase-change material; the internal nuclear shell takes vinyl monomers as polymerizing monomers and packs the core through interfacial polymerization; and the external nuclear shell takes etherified melamine resin prepolymers as polymerizing monomers and packs the internal nuclear shell through in-situ polymerization. The heat-storage and heat-preservation microcapsules have thermosetting properties of microcapsule walls, high processing resistance, high abrasive resistance and high durability. The heat-storage and heat-preservation microcapsules can be used for heat-preservation finishing of textiles and building heat-preservation materials and can ensure the higher phase change energy of the organic phase-change materials of the cores of the heat-storage and heat-preservation microcapsules, the organic phase-change materials cannot flow or shift after phase change, so that a temperature control function can be enduringly kept.

Description

technical field [0001] The invention relates to a phase change energy storage microcapsule and its preparation method and application, in particular to a heat storage and heat preservation microcapsule whose core material is a phase change energy storage material, as well as its preparation method and application. Background technique [0002] Phase change energy storage materials are intelligent materials that can improve energy utilization and absorb energy adaptively. In terms of building interior decoration materials, phase change materials can make full use of environmental energy to achieve the effect of warming in winter and cooling in summer. In terms of textiles, traditional natural fibers (such as cotton, hemp, silk, wool) and chemical fibers (such as polyester, nylon, acrylic and man-made fibers, etc.) have a certain thermal resistance to prevent heat loss, and their thermal insulation ability is effective. Determined by the amount of still air contained in the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06B01J13/18B01J13/16D06M23/12D06M13/02C09D5/00C09D5/34C09D133/04C09D125/14C09D7/12C04B28/00C04B28/10C04B28/14C04B24/00
Inventor 纪俊玲汪媛何叶丽王炜
Owner 溧阳常大技术转移中心有限公司
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