Phase change microcapsule, and phase change microcapsule fiber and preparation method thereof

A phase-change microcapsule and phase-change technology, applied in the field of fibers, can solve the problems of material leakage, lack of intelligent temperature adjustment, etc., and achieve good high temperature resistance and comfortable wearing effects

Pending Publication Date: 2021-03-26
杭州乐铭科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The fibers prepared in the prior art are used in fabrics, which do not have the function of intelligent temperature regulation, and ...

Method used

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  • Phase change microcapsule, and phase change microcapsule fiber and preparation method thereof
  • Phase change microcapsule, and phase change microcapsule fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a kind of phase-change microcapsules, which is composed of a phase-change core and a shell, and the shell is coated outside the phase-change core; the phase-change core includes methyl myristate, and the shell includes polyurethane, wherein the phase-change microcapsules The mass ratio of phase change core to shell is 5:5.

[0031] This embodiment also provides a phase-change microcapsule fiber, including phase-change microcapsules and a dyeable shell, where the dyeable shell includes silicon dioxide.

[0032] This embodiment also provides a preparation method of phase change microcapsule fiber, comprising the following steps:

[0033] (1) Mix 5.5g of ethyl palmitate, 4.5g of starch, 2g of polysorbate-80 and 2g of polyvinyl alcohol, then slowly add 150ml into the water, stir while adding, when emulsified to a uniform dispersion system, slowly add 8g of polyethylene glycol and 0.03g of triethylenediamine were stirred at 20°C for 30mins, the stir...

Embodiment 2

[0037] A kind of preparation method of phase change microcapsule fiber of the present embodiment, comprises the following steps:

[0038] (1) Mix 6g of butyl stearate, 4g of polyurethane, polyurethane as polyethylene glycol, 3g of polysorbate-80 and 2g of polyvinyl alcohol, and then slowly add it to 200ml of water, stir while adding, and emulsify until uniform When dispersing the system, slowly add 8g of polyethylene glycol and triethylenediamine, stir at 30°C for 30mins, stir at 3000rpm, slowly raise the temperature to 80°C, add 4ml of ethylene glycol and react for 1.5h, that is, the phase change core is prepared phase change microcapsules.

[0039] (2) Add a layer of dyeable shell outside the shell of the phase change microcapsule, the dyeable shell is silicon dioxide. Add citric acid, acetic acid and ethanol to the microcapsule solution through ethyl orthosilicate, hydrolyze at 40°C for 12 hours at pH = 6, and pass through ammonia gas after hydrolysis, and the silica sol b...

Embodiment 3

[0042] A kind of preparation method of phase change microcapsule fiber of the present embodiment, comprises the following steps:

[0043] (1) Mix 7g of methyl myristate, 3g of polyurethane, polyurethane is toluene diisocyanate, 2g of polysorbate-80 and 2g of polyvinyl alcohol, and then slowly add it to 150ml of water, stir while adding, when emulsified to uniform dispersion In the system, slowly add 6g of polyethylene glycol and 0.02g of triethylenediamine, stir at 20°C for 30mins, the stirring speed is 6000rpm, slowly raise the temperature to 80°C, add 4ml of ethylene glycol and react for 1h, that is, the phase change core is prepared phase change microcapsules.

[0044] (2) Add a layer of dyeable shell outside the shell of the phase change microcapsule, the dyeable shell is silicon dioxide. Add citric acid, acetic acid and ethanol to the microcapsule solution through ethyl orthosilicate, hydrolyze at 60°C for 12 hours at pH = 5, and pass through ammonia gas after hydrolysis...

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Abstract

The invention belongs to the technical field of fibers, and particularly relates to a phase change microcapsule, which is composed of a phase change core and a shell, wherein the phase change core iscoated with the shell, the phase change core comprises one or more of methyl myristate, ethyl palmitate, butyl stearate and ph, ph is n-alkane with 18 carbon atoms, and the shell comprises one or moreof starch, polyurethane, urea resin and PMMA. The invention also relates to a phase change microcapsule fiber, which comprises a phase change microcapsule and a dyeable shell, wherein the dyeable shell is coated outside the phase change microcapsule. The invention also relates to a preparation method of the phase change microcapsule fiber. The preparation method comprises the following steps: preparing an emulsion; preparing a phase change microcapsule; and preparing a dyeable shell, and preparing phase change microcapsule fibers from the phase change microcapsules added with the dyeable shell through melt spinning. According to the invention, the phase change microcapsule has the functions of high temperature resistance and oxidation resistance, and the fiber prepared from the phase change microcapsule has a high enthalpy value and good high temperature resistance.

Description

technical field [0001] The invention belongs to the field of fiber technology, and in particular relates to a phase change microcapsule, a phase change microcapsule fiber and a preparation method thereof. Background technique [0002] Phase-change microcapsules are a new type of composite microcapsules with a core-shell structure formed by coating a layer of stable polymer film on the surface of solid-liquid phase-change material particles using microcapsule technology. [0003] Phase-change microcapsules are materials that can automatically sense changes in the temperature of the external environment and use this to intelligently adjust their own temperature. This material has the function of storing and releasing heat in the form of latent heat. When the temperature reaches a certain value, the phase change material in the phase change microcapsules will undergo mutual transformation of physical form (solid-liquid), so that the functions of heat absorption and heat releas...

Claims

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Application Information

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IPC IPC(8): C09K5/06D01F1/10D01F8/14D01F8/12
CPCC09K5/063D01F1/10D01F8/12D01F8/14
Inventor 张赛肖吕明肖张桐
Owner 杭州乐铭科技有限公司
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