Technology for preparing magnetic reflective glass beads through sol-gel method

A technology of reflective glass beads and gel method, which is applied in glass forming, manufacturing tools, glass manufacturing equipment, etc., can solve the problems of low cost, devitrified glass beads, and high beading efficiency, and achieve compact structure and good The effect of refractive index and performance enhancement

Inactive Publication Date: 2017-11-21
HEFEI DINGLIANG OPTICAL TECH
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Problems solved by technology

[0002] Among the preparation methods of glass microspheres, the production of glass microspheres by the blowing method has simple process, high beading efficiency and low cost. These defects need to be solved by adjusting

Method used

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Embodiment Construction

[0020] A process for preparing magnetic reflective glass beads by a sol-gel method, comprising the following specific steps:

[0021] (1) Preparation of ferro-titanium sol:

[0022] Slowly add 30 parts by weight of tetrabutyl titanate to 420 parts of absolute ethanol / water mixture, add 0.08 parts of acetylacetone as a hydrolysis inhibitor, adjust the pH value to 3.8, and then add 10 parts of 30% FeCl 3 Alcoholic solution, mix well;

[0023] (2) Preparation of silica sol:

[0024] Under vigorous stirring conditions, add 60 parts of tetraethyl orthosilicate to 320 parts of deionized water, and use 0.5M hydrochloric acid solution to adjust the pH value of the sol system to 3.2;

[0025] (3) Hydrolysis:

[0026] When the silica sol in step (2) has become transparent and no bubbles are generated inside, slowly drop into the uniform doped iron-titanium sol in step (1), disperse it ultrasonically for 20 minutes, and add it to the mixed sol under stirring and 0°C Add 90 parts of d...

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Abstract

The invention discloses a technology for preparing magnetic reflective glass beads through a sol-gel method. The technology comprises the following steps: using tetraethyl orthosilicate as a silicon source and titanium tetrabutoxide as a titanium source, adding an alcohol solution of iron chloride to obtain an iron-doped mixed sol system, dropwise adding the iron-doped mixed sol system to paraffin having a certain temperature, and dispersing the sol under the action of surface tension to form SiO2-TiO2 glass bead bodies having a good roundness; and controlling the addition amount of the alcohol solution of iron chloride to make the glass beads have a good refractive index and endow the glass beads with a certain magnetic property, and carrying out bead implantation treatment through a magnetic field to make the produced product have a magnetic property in order to enhance the use performances of the product.

Description

technical field [0001] The invention relates to the technical field of reflective materials, in particular to a manufacturing process of magnetic reflective glass beads. Background technique [0002] Among the preparation methods of glass microspheres, the production of glass microspheres by the blowing method has simple process, high beading efficiency and low cost. These defects need to be solved by adjusting the flame temperature and air flow, but its optical quality is better; Graphite powder sticks to the surface of the produced glass microspheres, which is difficult to clean and easy to produce devitrified glass microspheres. [0003] The sol-gel method uses a liquid or a mixture of easily miscible liquids as a reactant. Since the raw materials are uniformly mixed in a low-viscosity liquid at the molecular level and undergo a complex reaction, high-purity glass and high-homogeneity multi-component glass are prepared , Glass ceramics. Using the sol-gel method can c...

Claims

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Application Information

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IPC IPC(8): C03C12/02C03B19/10C03C1/00
CPCC03C12/02C03B19/10C03C1/00
Inventor 范春平
Owner HEFEI DINGLIANG OPTICAL TECH
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