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

A microcapsule and heat storage technology, applied in the directions of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., can solve the problem that the overall performance of textiles changes greatly, the wear resistance and durability of microcapsule shells are difficult to break through, and Change material leakage and other problems, to achieve the effect of good wear resistance and durability, maintaining temperature control function, and large phase change energy

Active Publication Date: 2013-03-20
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℃, 50 parts of No. 30 paraffin, 802 parts of Span, 803 parts of Tween, and 200 parts of distilled water are homogenized in a high-speed shearing mixer emulsifier at high speed at a homogenization rate of 10000rpm. After 30 minutes, homogenize The emulsion was poured into a three-necked flask, placed in a constant temperature water bath, heated to 80°C under stirring, added 0.5 parts of ammonium persulfate and 20 parts of methyl acrylate to build 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 300rpm, heat up to 55℃, keep for 1~2h to cool the outer layer, and neutralize the ammonia to pH =7, the heat storage and heat preservation microcapsule solution is obtained, and the powdered heat storage and heat preservation microcapsule No. 1 is obtained by spray drying.

Embodiment 2

[0037] Pure knitted fabric for heat storage and heat preservation finishing:

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

[0039] Padding liquid 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 feel is almost unchanged. The formaldehyde content is 6.7mg / kg. After the knitted fabric has been washed 20 times, the Crow value is only reduced by 0.3 after the thermal insulation tester.

Embodiment 3

[0044] At 55℃, 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 are homogenized in a high-speed shearing mixer emulsifier at high speed, and the homogenization rate is 10000rpm After 30 minutes, pour the homogenized emulsion into a three-necked flask and put it in a constant temperature water bath. Under stirring, the temperature is raised to 80°C and 0.5 parts of potassium persulfate and 22 parts of ethyl methacrylate are added to make the inner layer. After cooling the wall, adjust the pH to 3~4 with citric acid, add 80 parts of etherified melamine resin dropwise at a stirring speed of 300rpm, heat up to 55℃, keep for 1~2h to make the outer layer single-layer wall; After the system is cooled to room temperature, 80 parts of etherified melamine resin are added dropwise again under stirring conditions, the temperature is raised to 65° C., the temperature is kept, and the second wall b...

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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 a preparation method and application thereof, in particular to a heat storage and heat preservation microcapsule whose core material is a phase change energy storage material, and a preparation method and application thereof. Background technique [0002] Phase change energy storage materials are smart materials that improve energy utilization and can adaptively absorb energy. In terms of 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, linen, silk, wool) and chemical fibers (such as polyester, nylon, acrylic and man-made fibers, etc.) textiles have a certain thermal resistance to prevent heat loss, and their thermal insulation capabilities are Determined by the amount of still air contained in the textile. [...

Claims

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Application Information

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Patent Type & Authority Patents(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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