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Composite functional phase change microcapsule and preparation method thereof

A phase-change microcapsule and functional technology, applied in the direction of microcapsule preparation, microsphere preparation, botanical equipment and methods, etc., can solve the problems of single function and loss of microcapsules

Pending Publication Date: 2021-09-07
ZHEJIANG TRANSFAR FUNCTIONAL NEW MATERIAL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purpose of the present invention is to provide a kind of preparation method of composite functional phase-change microcapsules, it passes nano Ag / TiO 2 Modify the capsule wall to improve the thermal conductivity of the capsule wall, enhance the thermodynamic stability of the microcapsules, and make the phase change microcapsules have cooling, antibacterial, and anti-ultraviolet effects at the same time. Add functional essential oils, such as scented essential oils, to the capsule core , mosquito repellent essential oil, etc., and can endow microcapsules with more functions to solve the problem of relatively single function of existing microcapsules, and avoid the loss of energy and time caused by multiple finishing

Method used

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  • Composite functional phase change microcapsule and preparation method thereof
  • Composite functional phase change microcapsule and preparation method thereof
  • Composite functional phase change microcapsule and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A preparation method of composite functional phase change microcapsules, the specific steps are as follows:

[0036] Step 1: AgNO3 solution with anatase TiO 2 Nano-Ag / TiO under Irradiation of Photocatalytic Reactor 2 .

[0037] 2.26g of 10% AgNO 3 Add the solution dropwise to 100mL ultrapure water, then weigh 5g of glucose and 0.54g of anatase TiO 2 Dissolve in 100mL ultrapure water. The dissolved solution was poured into a 500ml beaker wrapped in tin foil and mixed, and reacted for 60 minutes under the irradiation of a photocatalytic reactor to obtain nano Ag / TiO 2 .

[0038] Step 2: Prepare composite core material emulsion, which contains phase change material, functional essential oil and polymer emulsifier.

[0039] ①Water phase preparation: Weigh 15g of emulsifier SMA (sodium salt solution of styrene-maleic anhydride copolymer) and 50g of deionized water in the reactor, heat to 40°C, start stirring at a stirring speed of 1000r / min, until The solution is clea...

Embodiment 2

[0052] A preparation method of composite functional phase change microcapsules, the specific steps are as follows:

[0053] Step 1: AgNO 3 solution with anatase TiO 2 Nano-Ag / TiO under Irradiation of Photocatalytic Reactor 2 .

[0054] 2.26g of 10% AgNO 3 Add the solution dropwise to 100mL ultrapure water, then weigh 4g of glucose and 0.34g of anatase TiO 2 Dissolve in 100mL ultrapure water. The dissolved solution was poured into a 500ml beaker wrapped in tin foil and mixed, and reacted for 60 minutes under the irradiation of a photocatalytic reactor to obtain nano Ag / TiO 2 .

[0055] Step 2: Prepare composite core material emulsion, which contains phase change material, functional essential oil and polymer emulsifier.

[0056] ①Water phase preparation: Weigh 3g of emulsifier PVA and 50g of deionized water in the reactor, heat to 40°C, start stirring at a stirring speed of 1000r / min until the solution is clear and transparent;

[0057] ②Oil phase preparation: Weigh 23g...

Embodiment 3

[0069] A preparation method of composite functional phase change microcapsules, the specific steps are as follows:

[0070] Step 1: AgNO 3 solution with anatase TiO 2 Nano-Ag / TiO under Irradiation of Photocatalytic Reactor 2 .

[0071] 2.26g of 10% AgNO 3 Add the solution dropwise to 100mL ultrapure water, then weigh 4g of glucose and 0.4g of anatase TiO 2 Dissolve in 100mL ultrapure water. The dissolved solution was poured into a 500ml beaker wrapped in tin foil and mixed, and reacted for 60 minutes under the irradiation of a photocatalytic reactor to obtain Ag / TiO 2 nanocomposites.

[0072] Step 2: Prepare composite core material emulsion, which contains phase change material, functional essential oil and polymer emulsifier.

[0073] ①Water phase preparation: Weigh 7.2g of emulsifier SMA (sodium salt solution of styrene-maleic anhydride copolymer), 50g of deionized water in the reactor, heat to 40°C, and start stirring at a stirring speed of 1000r / min. until the solu...

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Abstract

The invention discloses a composite functional phase change microcapsule and a preparation method thereof. The composite functional phase change microcapsule takes a phase change material and functional essential oil as a capsule core and melamine resin and nano Ag / TiO2 as a capsule wall, and the preparation method comprises the following steps: step 1, irradiating an AgNO3 solution and anatase type TiO2 in a photocatalytic reactor to obtain nano Ag / TiO2; step 2, preparing a composite core material emulsion; step 3, preparing a melamine resin prepolymer, and dispersing the nano Ag / TiO2 in the melamine resin prepolymer to obtain a nano Ag / TiO2 melamine resin prepolymer; and step 4, preparing the composite functional phase change microcapsule modified by nano Ag / TiO2 through in-situ polymerization. According to the invention, the nano Ag / TiO2 modified microcapsule can be prepared, the heat conductivity of the capsule wall can be improved, and the thermodynamic stability of the microcapsule is enhanced; according to the invention, the problem of relatively single function of the existing microcapsule is solved, and the energy and time loss caused by multiple tidying is avoided.

Description

technical field [0001] The invention relates to a phase-change microcapsule, in particular to a composite functional phase-change microcapsule and a preparation method thereof. Background technique [0002] In hot summer, people have higher requirements for fabrics, not only to have comfort, but also to have anti-mosquito, antibacterial, anti-mildew, anti-ultraviolet and other functions. In the prior art, cooling finishing agents, anti-mosquito finishing agents, and anti-ultraviolet finishing agents are used in combination, which not only has problems with stability and setting conditions, but also has complicated processes and high costs. [0003] Microcapsules are a "core-shell" structure, and the core material is made into tiny particles in the form of coating to slow down the release and loss of the core material. Depending on the choice of core material, the prepared microcapsules can have different functions, such as flame-retardant microcapsules, flavor microcapsules...

Claims

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Application Information

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IPC IPC(8): B01J13/18B01J13/02C09K5/06A01N59/16A01P1/00A01P3/00
CPCB01J13/18B01J13/02C09K5/063A01N59/16
Inventor 司马聪陈萍萍周家海杨小波缪宇龙
Owner ZHEJIANG TRANSFAR FUNCTIONAL NEW MATERIAL CO LTD
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