Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for quickly preparing phase change energy storage microcapsule by ultraviolet light irradiation and polymerization

A technology of phase change energy storage and phase change energy storage material, which is applied in the field of ultraviolet light-induced polymerization to rapidly prepare phase change energy storage microcapsules, can solve the problems of complex preparation process, slow reaction rate, long preparation time, etc., and achieve uniform product. , the effect of fast polymerization rate and increased reaction rate

Inactive Publication Date: 2010-01-20
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common defect of these two methods is that the preparation process is complex, the reaction rate is slow, the preparation time is long, it takes several to tens of hours, and the production efficiency is low.

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
  • Method for quickly preparing phase change energy storage microcapsule by ultraviolet light irradiation and polymerization
  • Method for quickly preparing phase change energy storage microcapsule by ultraviolet light irradiation and polymerization
  • Method for quickly preparing phase change energy storage microcapsule by ultraviolet light irradiation and polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 15g octadecane, 0.25g photoinitiator 2959, 8g methyl methacrylate, 0.4g Span80, 0.5g Tween80 to 100g deionized water, stir magnetically at 700rpm for 25min at a temperature of 40°C, and then use a homogenizer The machine was homogenized for 3 minutes at a speed of 7000 rpm to obtain an emulsion with certain stability.

[0021] Put the emulsion into a 250ml quartz beaker, change to magnetic stirring at 300rpm, and irradiate the emulsion with a 1000W UV lamp at a distance of 30cm for 30min; then turn off the UV lamp and filter; add the filter cake to a hot deionization machine at 60°C In water, keep warm, stir, wash for 30 minutes, and filter again; the filter cake is repeatedly washed three times under the above conditions, and the product is placed in an oven and dried at 45°C for 5 hours to obtain the product as an odorless, loose white powder.

[0022] The appearance photograph of the PCM microcapsule prepared by embodiment 1 is shown in figure 1 . It can be see...

Embodiment 2

[0026] In 100g deionized water, add 15g No. 30 phase-change paraffin, 0.3g photoinitiator BTC, 10g butyl methacrylate, 0.23g Pingpingjia, 0.96g sodium dodecylbenzenesulfonate, at a temperature of 45°C, to Stir magnetically at 600rpm for 30min, then homogenize with a homogenizer at 9000rpm for 3min to obtain an emulsion with certain stability.

[0027] Add the emulsion into a 250ml quartz beaker, change to 400rpm magnetic stirring, and irradiate the emulsion with a 500W UV lamp at a distance of 20cm from the light source for 35min; then turn off the UV lamp and filter; add the filter cake to hot deionized water at 60°C , keep warm, stir, wash for 30 minutes, and filter again; the filter cake is repeatedly washed three times under the above conditions, and the product is put into an oven and dried at 45°C for 5 hours to obtain the product, which is an odorless, loose white powder.

Embodiment 3

[0029] Add 15g of dodecyl alcohol, 0.25g of photoinitiator ABP, 8g of methacrylic acid, 0.46g of emulsifier OP10, 0.790g of sodium lauryl sulfate into 100g of deionized water, and stir magnetically at 700rpm for 30min at a temperature of 30°C , and then use a homogenizer to homogenize for 3 minutes at a speed of 7000 rpm to obtain an emulsion with certain stability.

[0030] Put the emulsion into a 250ml quartz beaker, change to 300rpm magnetic stirring, and irradiate the emulsion with a 500W UV lamp at a distance of 20cm from the light source for 40min; then turn off the UV lamp and filter; add the filter cake to 60°C heat to remove In deionized water, keep warm, stir, wash for 30 minutes, and filter again; the filter cake is repeatedly washed three times under the above conditions, and the product is placed in an oven and dried at 45°C for 5 hours to obtain the product, which is an odorless, loose white powder.

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

No PUM Login to View More

Abstract

The invention relates to a method for quickly preparing a phase change energy storage microcapsule by ultraviolet light irradiation and polymerization, which comprises the following steps: adding 100 parts of phase change energy storage material, 5-10 parts of surface active agent, 40-80 parts of monomer material and an ultraviolet light initiating agent being 2-5 percent of the monomer material into 500-1,000 parts of deionized water; stirring the materials at a certain rotating speed for 20-40 minutes and then homogenizing and dispersing the materials for 2-5min at the rotating speed of 6,000-12,000 by a homogenizer so as to prepare the materials into an emulsion; putting the emulsion under an ultraviolet light source of 500-1,000W, irradiating the emulsion for 20-40min to initiate the monomer material to polymerize and stirring the emulsion at lower rotating speed; and after finishing initiating, filtering the emulsion to obtain solid powder and washing and drying the solid powder. Because the wavelength of the ultraviolet light is concentrated, the initiation mode of the ultraviolet light to a reactant system is easy to control, and a large quantity of the ultraviolet light initiating agent can be decomposed to generate free radicals, therefore, the reaction speed of photopolymerization is many times higher than the reaction speed of a conventional thermal initiation polymerization mode, and the improvement of the reaction speed renders possible the continuous mass production.

Description

technical field [0001] The invention relates to the preparation technology of phase-change energy storage microcapsules, in particular to a method for rapidly preparing phase-change energy storage microcapsules by polymerization induced by ultraviolet light. The core material of the microcapsules is a phase-change energy storage material, and the wall material adopts ultraviolet light It is made by initiating the polymerization reaction of organic polymer monomers. Background technique [0002] A phase change energy storage material (PCM) is a substance with a specific function, which can change the phase state of a substance at a specific temperature or temperature range (phase change temperature), and absorb or release a large amount of phase along with the phase change process. It becomes latent heat, so it can be used to store heat or cold. Compared with sensible heat energy storage, phase change energy storage has the characteristics of high energy storage density, app...

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
IPC IPC(8): B01J13/14B01J19/12
Inventor 马素德唐国翌姚有为宋国林
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com