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A kind of micron hollow xerogel ball and preparation method thereof

A dry gel ball, micron-scale technology, applied in the direction of microsphere preparation, gel preparation, microcapsule preparation, etc., to achieve the effect of increasing preparation cost, simple process and mild conditions

Inactive Publication Date: 2019-02-22
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the preparation of monodisperse micron-sized hollow xerogel spheres by microencapsulation, and there are even less micron-sized hollow xerogel spheres with silica gel shells that have metal ion channels through the shell. to report

Method used

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  • A kind of micron hollow xerogel ball and preparation method thereof
  • A kind of micron hollow xerogel ball and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The operation steps of embodiment 1 are as follows:

[0030] 1. According to 5.0Li 2 O·18.0Na 2 O 4.4K 2 O·2.0B 2 o 3 70.6SiO2 2 (wt.%) The formula configuration contains salt silica sol. Take 60mL of ethyl orthosilicate and 4mL of tributyl borate and blend them in 30mL of absolute ethanol and stir, add 0.35mL of hydrochloric acid and 7mL of deionized water, reflux at 60°C for 6h, and adjust the pH of the sol to 1 with hydrochloric acid. Dissolve 7.8g of lithium acetate, 18.1g of sodium acetate and 2.1g of potassium acetate in 42mL of deionized water to form a saturated salt solution. The above two solutions were blended as the intermediate phase W, and 1% octadecyltrimethylammonium chloride was added to the intermediate phase W.

[0031] 2. Both the inner phase O1 and the outer phase O2 choose simethicone oil with a viscosity of 30cs. According to the volume ratio of internal phase O1 and intermediate phase W of 1:1, the internal phase O1 was added dropwise to...

Embodiment 2

[0034] The operating steps of Example 2 are basically the same as those of Example 1, its ingredients are shown in Table 1, and the test conditions are shown in Table 2. Additive A is OP-10 with a volume ratio of 0.1%.

Embodiment 3

[0036] The operation steps of embodiment 3 are basically the same as that of embodiment 1, its composition is as shown in table 1, and the test conditions are as shown in table 2. Additive A is Tween-20 with a volume ratio of 0.5%, and the volume ratio of the internal phase O1 to the intermediate phase W is 1:10.

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Abstract

The invention provides a micron hollow dry gel ball and a preparation method thereof. The micron hollow dry gel ball provided by the invention takes silicon-oxygen gel as a shell layer, wherein the shell layer contains functional metal ions and ducts penetrating through interior and exterior. The metal ions on the shell layer of the hollow dry gel ball have a function of improving the melting point, viscosity and crystallization tendency of the gel. The ducts on the shell layer of the hollow dry gel ball are beneficial to the inner and outer transmission of big and small molecules of an object. According to the preparation method for the micron hollow dry gel ball provided by the invention, on the basis of an emulsion micro-packaging technique, an oil / water / oily system is adopted for preparing micro emulsion, and the acquired hollow dry gel ball has a controllable size, uniform components and monodispersity. The hollow dry gel ball can be taken as the raw material for preparing a hollow glass micro-sphere with large-diameter narrow distribution and containing inert gases. The acquired high-quality functional hollow glass micro-sphere can be applied to experimental items, such as a laser inertial confinement fusion physical experiment and a high-energy physical experiment.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a micron-sized hollow xerogel sphere and a preparation method thereof. Background technique [0002] In the laser inertial confinement fusion (ICF) physical experiment, hollow glass microspheres (hollow glass microspheres, HGM) with silicon dioxide as the main component have high compressive strength, good sphericity, uniform wall thickness, high surface finish, and protection. It is a kind of ICF fuel container widely used because of its excellent gas performance. The preparation of HGM mainly adopts the xerogel method, but since the xerogel particles used as raw materials are generally obtained by grinding and sieving the gel block, the composition and micropore structure of the particles are quite different, therefore, the microspheres obtained by the xerogel method It is difficult to control the quality of microspheres, and the repeatability of micro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02
CPCB01J13/0052B01J13/02
Inventor 李婧初巧妹李波李芳李洁苏琳刘一杨刘梅芳张占文陈素芬冯建鸿史瑞廷黄勇
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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