Method for preparing large-diameter high-sphericity polymer hollow micro-spheres

A high-sphericity, hollow microsphere technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of large amount of FB, complicated devices, and large injuries to operators, and achieves delaying curing speed, inhibiting diffusion, and promoting spherical shape. the effect of

Inactive Publication Date: 2016-10-26
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device for introducing FB steam is complicated, and the amount of FB is large, which will cause great harm to operators.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0032] This embodiment includes the following steps:

[0033] 2a. Polystyrene and benzene are configured into the oil phase O that the concentration is 12wt% by 12:88 mass ratio;

[0034] 2b. prepare the polyacrylic acid aqueous solution with a concentration of 0.05wt% as the outer water phase W2;

[0035] 2c. Using distilled water as the inner water phase W1, and using microfluidic technology to generate W1 / O / W2 double emulsion particles with an inner diameter of 1900 μm and an outer diameter of 2400 μm;

[0036] 2d. Collect the W1 / O / W2 double emulsion particles prepared in step c using a flat-bottomed cylindrical bottle containing the outer aqueous phase W2 and 150 benzene droplets with a diameter of 2400 μm, seal the flat-bottomed cylindrical bottle, and fix it horizontally on a rotary evaporator. On the instrument, the rotation speed is 5rpm~60rpm, and the curing process is performed until the W1 / O / W2 double emulsion particles are cured to form polystyrene microspheres; ...

Embodiment 3

[0042] This embodiment includes the following steps:

[0043] 3a. Polystyrene and fluorobenzene are configured into the oil phase O with a concentration of 18wt% in a mass ratio of 18:82;

[0044] 3b. prepare the polyacrylic acid aqueous solution with a concentration of 0.04wt% as the outer water phase W2;

[0045] 3c. Using distilled water as the inner water phase W1, and using microfluidic technology to generate W1 / O / W2 double emulsion particles with an inner diameter of 1900 μm and an outer diameter of 2400 μm;

[0046] 3d. The W1 / O / W2 double emulsion particles prepared in step c were collected in a flat-bottomed cylindrical bottle containing the outer aqueous phase W2 and 300 FB droplets with a diameter of 2400 μm, and the flat-bottomed cylindrical bottle was sealed and fixed horizontally on a rotary evaporator. On the instrument, the rotation speed is 5rpm~60rpm, and the curing process is performed until the W1 / O / W2 double emulsion particles are cured to form polystyrene...

Embodiment 4

[0052] This embodiment includes the following steps:

[0053] 4a. Polystyrene and toluene are configured into the oil phase O with a concentration of 12wt% in a mass ratio of 12:88;

[0054] 4b. prepare the polyvinyl alcohol aqueous solution with a concentration of 2wt% as the outer water phase W2;

[0055] 4c. Using distilled water as the inner water phase W1, and using microfluidic technology to generate W1 / O / W2 double emulsion particles with an inner diameter of 1900 μm and an outer diameter of 2400 μm;

[0056] 4d. The W1 / O / W2 double milk particles prepared in step c were collected by a flat-bottomed cylindrical bottle equipped with the outer water phase W2, the flat-bottomed cylindrical bottle was sealed, and the flat-bottomed cylindrical bottle was horizontally fixed on a rotary evaporator with a rotating speed of 5rpm to 60rpm, and solidified. Treat until the W1 / O / W2 double emulsion solidifies to form polystyrene microspheres;

[0057] 4e. Collect the cured polystyren...

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
The inside diameter ofaaaaaaaaaa
Outer diameteraaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing large-diameter high-sphericity polymer hollow micro-spheres. The method has the advantages that curing speed reducing and rotary curing processes are organically combined with one another, curing containers are sealed in procedures for preparing polymer hollow micro-spheres by the aid of microfluidic technologies, the quantities of dual-emulsion particles in external water phases and the quantities of preliminarily added organic solvents are changed, diffusion of the organic solvents towards the external water phases can be suppressed by the aid of the solubility of the organic solvents in the external water phases, the curing speeds of dual-liquid droplet can be reduced, and spheroidization of the dual-emulsion particles can be promoted; horizontal inclination angles, rotation modes and the rotational speeds of rotary flasks are controlled, accordingly, dispersion states of the dual-emulsion particles in the external water phases can be controlled, adhesion, coalescence and emulsion breaking of the dual-emulsion particles due to mutual collision can be prevented, non-spheroidization tendency of the dual-emulsion particles can be lowered, and the large-diameter high-sphericity polymer hollow micro-spheres can be prepared; the large-diameter high-sphericity polymer hollow micro-spheres can be applied to laser inertial confinement fusion physical experiments.

Description

technical field [0001] The invention belongs to the field of polymer processing and molding, and particularly relates to a method for preparing large-diameter and high-sphericity polymer hollow microspheres. Background technique [0002] With the increasing global energy shortage and increasing energy demand, the experimental research of inertial confinement fusion (ICF), which is one of the most promising ways to realize controllable nuclear fusion, has attracted the attention of advanced countries such as the United States. In ICF physics experiments, polymer hollow microspheres are used as fuel containers. The sphericity and surface finish of their geometry are related to key parameters such as laser absorption, coupling, and implosion symmetry and uniformity, which are critical to the success of ICF physics experiments. has a pivotal role. Therefore, the sphericity index of microspheres used in ICF physical experiments is extremely demanding. [0003] At present, the p...

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): B01J13/02
CPCB01J13/02
Inventor 陈素芬刘梅芳陈强李洁刘一杨李婧苏琳李波漆小波张占文初巧妹史瑞廷黄勇冯建鸿
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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