Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of phase change microcapsule synthesized by light curing method and its preparation method

A phase-change microcapsule and light-curing technology, which is applied in the direction of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., can solve the problems of unfriendly environment and achieve the effects of environmental friendliness, short synthesis time and high calorific value

Active Publication Date: 2020-11-27
TONGJI UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN105498652A discloses a method for preparing phase-change microcapsules by photocuring, in which formaldehyde is used as a solvent, which is relatively unfriendly to the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of phase change microcapsule synthesized by light curing method and its preparation method
  • A kind of phase change microcapsule synthesized by light curing method and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) The commercial P25 (TiO 2 ) 0.4 g was dissolved in 50 ml of deionized water, stirred and ultrasonically oscillated for 10 minutes to form a suspension and an aqueous phase.

[0030] (2) 3g of paraffin, 3g of methylmethacrylate (MMA), 0.6g of pentaerythritol tetraacrylate (PETRA) and 0.15g of light curing agent Photoinitiator819 were mixed, melted and stirred to form an oil phase, wherein the paraffin component For n-octadecane.

[0031] (3) Mix the oil phase in step (2) with the water phase in step (1), and emulsify with a high-speed emulsifier. The rotating speed of the emulsifier is 17000 rpm, and the emulsification time is 5 minutes.

[0032] (4) The emulsified suspension was irradiated with ultraviolet light (ultraviolet lamp with a power of 60W and a wavelength of 365nm) for 10 minutes.

[0033] (5) After filtering the particles in the suspension, dry in an oven below the paraffin solidification temperature for 24 hours to form PMMA / TiO 2 @n-octadecane phase...

Embodiment 2

[0038] (1) Put commercial Al 2 o 3 0.1 g was dissolved in 50 ml of deionized water, stirred and ultrasonically oscillated for 10 minutes to form a suspension and form an aqueous phase.

[0039] (2) 1 g of paraffin, 2 g of methylmethacrylate (MMA), 0.4 g of pentaerythritol tetraacrylate (PETRA) and 0.1 g of light curing agent Photoinitiator819 were mixed, melted and stirred to form an oil phase.

[0040] (3) Mix the oil phase in step (2) with the water phase in step (1), and emulsify with a high-speed emulsifier. The rotating speed of the emulsifier is 5000 rpm, and the emulsification time is 5 minutes.

[0041] (4) The emulsified suspension was irradiated by ultraviolet light (ultraviolet lamp with a power of 60W and a wavelength of 365nm) for 5 minutes.

[0042] (5) After filtering the particles in the suspension, dry for 24 hours in an oven below the paraffin solidification temperature to form PMMA / Al 2 o 3 @paraffin phase change microcapsules.

Embodiment 3

[0044] (1) The commercial SiO 2 0.4 g was dissolved in 50 ml of deionized water, stirred and ultrasonically oscillated for 10 minutes to form a suspension and form an aqueous phase.

[0045] (2) 4g of paraffin, 5g of methyl methacrylate (MMA), 1g of pentaerythritol tetraacrylate (PETRA) and 0.25g of light curing agent Photoinitiator819 were mixed, melted and stirred to form an oil phase, in which the paraffin component was positive octadecane.

[0046] (3) Mix the oil phase in step (2) with the water phase in step (2), and emulsify with a high-speed emulsifier. The rotating speed of the emulsifier is 20,000 rpm, and the emulsification time is 5 minutes.

[0047] (4) The emulsified suspension was irradiated by ultraviolet light (an ultraviolet lamp with a power of 60 W and a wavelength of 365 nm) for 30 minutes.

[0048] (5) After filtering the particles in the suspension, dry for 24 hours in an oven below the paraffin solidification temperature to form PMMA / SiO 2 @paraffin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a phase change microcapsule synthesized with a photocuring method and a preparation method of the phase change microcapsule. The method comprises the steps as follows: dissolving metal oxide nanoparticles in deionized water, and performing dispersion treatment to form a suspension to serve as a water phase; after mixing paraffin, MMA (methyl methacrylate), a crosslinking agent PETRA (pentaerythritol tetraacrylate) and a photoinitiator, heating the mixture to form an oil phase; mixing the water phase and the oil phase, and emulsifying the mixture with an emulsifier to obtain an emulsified suspension; irradiating the emulsified suspension by ultraviolet, conducting a photocuring reaction, and performing filtration and drying treatment on the reacted emulsified suspension to form the phase change microcapsule, wherein the temperature of the drying treatment process is not higher than paraffin solidification temperature. Compared with the prior art, the phase change microcapsule has the advantages that the reaction efficiency is high, additives are environmentally friendly, hot melting is high, heat conducting property is good, the preparation process is simple, the production cost is low and the like and can be applied to fields of energy storage, medicine and building.

Description

technical field [0001] The invention relates to a preparation method of hot-melt and high thermal conductivity phase-change microcapsules, in particular to a phase-change microcapsule synthesized by a photocuring method and a preparation method thereof, belonging to the field of organic phase-change materials. Background technique [0002] Phase change energy storage technology is a technology that realizes energy storage based on the absorption or release of heat during the phase change process of materials. It has been widely used in the field of industrial and enterprise energy recovery. Phase change energy storage materials refer to substances with specific functions that can not only change the phase state of matter but also absorb or release a large amount of latent heat of phase change at a specified temperature or temperature range (phase change temperature). Can be used to store cold. Compared with sensible heat storage, phase change energy storage has high energy ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06B01J13/14
CPCB01J13/14C09K5/063
Inventor 于航李超恩宋媛
Owner TONGJI UNIV