Double emulsified glass capillary microfluidic chip and phase change microcapsule prepared thereby

A technology of glass capillary and microfluidic chip, which is applied in the field of preparation of phase change microcapsule materials, to achieve the effects of reducing preparation time, increasing practical value and improving controllability

Active Publication Date: 2019-01-15
GUANGDONG UNIV OF TECH
View PDF5 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Double droplet preparation technology is a new technology to prepare stable double droplet by controlling the interaction force of three-phase fluid. By changing the flow rate of three-phase fluid in the microchip, the structure and size of double droplet can be adjusted. Precise control, the use of double droplet preparation technology combined with UV curing to prepare phase change microcapsules with controllable core and wall sizes is still rarely reported

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
  • Double emulsified glass capillary microfluidic chip and phase change microcapsule prepared thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing phase-change microcapsules using the above-mentioned double emulsified glass capillary microfluidic chip, comprising the following steps:

[0039] (1) Get 9ml heptadecane as dispersed phase 1 with 10ml syringe, get 9ml HDDA containing 2% mass fraction Span 80 and 2% mass fraction photocuring agent with 10ml syringe as dispersed phase 2, get 15ml with 20ml syringe The 2% mass fraction of polyvinyl alcohol aqueous solution is used as the continuous phase; the dispersed phase 1, the dispersed phase 2 and the continuous phase are respectively pushed into the Teflon catheter from the syringe pump and passed into the double emulsified glass capillary microfluidic chip, wherein the dispersed phase The first is to pass into the microfluidic chip from the small tip glass capillary, the dispersed phase 2 is passed into the microfluidic chip from the first closed liquid storage tank, and the continuous phase is passed into the microfluidic chip from the secon...

Embodiment 2

[0043] The flow rate of the syringe pump was adjusted to 150 μl / min, 20 μl / min and 10 μl / min in turn, and other steps were the same as in Example 1. The thickness of the finally obtained capsule shell is about 50 μm, the diameter of the capsule core is about 240 μm, the total diameter of the capsule is about 340 μm, and the polydispersity coefficient is less than 3%.

Embodiment 3

[0045] The flow rate of the syringe pump was adjusted to 800 μl / min, 5 μl / min and 5 μl / min respectively, and other steps were the same as in Example 1. The thickness of the finally obtained capsule shell is about 10 μm, the diameter of the capsule core is about 20 μm, the total diameter of the capsule is about 60 μm, and the polydispersity coefficient is less than 3%.

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
wavelengthaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of preparation of phase change microcapsule materials, and discloses a double emulsified glass capillary microfluidic chip and a phase change microcapsuleprepared thereby. The double emulsified glass capillary microfluidic chip is used to prepare a phase change material microemulsion, the controllability of the prepared capsule is greatly enhanced, andthe practical value of the capsule is increased; and a high precision syringe pump is used to precisely control the emulsification process of a core material and a wall material in the microfluidic chip, and the phase change material microemulsion with good monodispersity and high sphericity is obtained. An UV curing wall material is used to reduce preparation time and cost, and the controllability of the wall material is improved. The preparation process has the advantages of simple equipment, simple operation, high utilization rate of raw materials, easy control of product particle size, sphericity, small shell thickness and core material size, no noise, no harmful waste, low energy consumption, and the like, and is suitable for promotion and application of various phase change microcapsules in scientific research and industry.

Description

technical field [0001] The invention belongs to the technical field of preparation of phase-change microcapsule materials, and in particular relates to a double-emulsified glass capillary microfluidic chip and the phase-change microcapsule made therefrom. Background technique [0002] In recent years, thermal energy storage technology (TES) has become an important energy-saving new technology, which has played a very significant role in improving energy utilization efficiency, and has become a very active research hotspot in the field of energy science. Phase change materials are a type of energy storage materials that can store and release a large amount of latent heat, and are widely used in heat storage and temperature control. However, due to the general corrosion of phase change materials, low heat transfer efficiency and solid-liquid transition, The use of phase change materials is limited. Microencapsulated phase change materials are a new technology that applies cap...

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 Applications(China)
IPC IPC(8): B01L3/00B01J13/04C09K5/06
CPCB01J13/046B01L3/5027C09K5/06
Inventor 陈颖李俊贾莉斯李亦昂
Owner GUANGDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap