Interference color glass bead and preparation method thereof

A technology of colored glass and glass microbeads, applied in the field of glass microbeads, can solve the problems of poor reflection effect of glass beads, reduce reflection effect, and less use of reflection fields, etc., so as to facilitate popularization and application, increase reflection performance, and good reflection performance Effect

Inactive Publication Date: 2013-03-06
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are only two kinds of reflective glass beads, white and silver gray. If other colors are required in practical applications, it may be necessary to add films or pigments of various colors, which will grea...

Method used

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  • Interference color glass bead and preparation method thereof
  • Interference color glass bead and preparation method thereof
  • Interference color glass bead and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh 10g of glass beads into a 250ml three-neck flask, add 200ml of deionized water, stir and wash with water for 10 minutes, let stand for a while, pour off the upper liquid, repeat the above steps twice, and wash with water. Then add 80ml of deionized water, adjust the pH value to 9 with NaOH, stir for 10 minutes, let stand for a while, pour off the upper liquid, and finish the alkali washing. Add 80ml of deionized water, adjust the pH value to 2.5 with hydrochloric acid, and stir for 10 minutes. Heat the solution to 60°C and add 100g / L of TiCl dropwise at a rate of 0.3ml / min 4 solution, while adding dropwise a 10% NaOH solution to adjust the pH of the system at 2.5, stop adding TiCl when the resulting product appears silvery white 4 solution and NaOH alkaline solution. The solid product was filtered out, washed with deionized water, dried at 150°C, then placed in a muffle furnace, heated to 650°C, calcined for 30 minutes, and naturally cooled in the furnace to obt...

Embodiment 2

[0043] Weigh 10g of glass beads into a 250ml three-neck flask, add 200ml of deionized water, stir and wash with water for 10 minutes, let stand for a while, pour off the upper liquid, repeat the above steps twice, and wash with water. Add 80ml of deionized water to the flask, adjust the pH value to 9 with NaOH, stir for 10 minutes, let stand for a while, pour off the upper liquid, and finish the alkali washing. Add 80ml of deionized water, adjust the pH value to 2.5 with hydrochloric acid and stir for 10 minutes. Heat the solution to 60°C and add 100g / L of TiCl dropwise at a rate of 0.3ml / min 4Solution, while adding dropwise a 10% NaOH solution by mass percentage to stabilize the pH of the system at 2.5, stop adding TiCl dropwise when the resulting product turns blue. 4 solution and NaOH alkaline solution. Filter out the solid product, wash it with deionized water, dry it at 150°C, put the dried colored glass beads into a muffle furnace, heat it to 650°C, bake it for 30 minu...

Embodiment 3

[0045] Weigh 10 g of glass microspheres into a 250 ml three-neck flask, add 200 ml of deionized water, and stir at 300 rpm. Stir and wash with water for 10 minutes, let stand for a while, pour off the upper liquid, repeat the above steps twice, and wash with water. Add 80ml of deionized water to the flask, adjust the pH value to 9 with NaOH, stir for 10 minutes, let stand for a while, pour off the upper liquid, and finish the alkali washing. Add 80 ml of deionized water, adjust the pH value to 2 with HCl and stir for 10 minutes. Heat the solution to 50°C and add 35g / L of SnCl dropwise at a rate of 0.2ml / min 4 Solution 20ml, while adding dropwise 10% NaOH solution to stabilize the pH of the system at 2. Stir for 10 minutes after the dropwise addition is complete. Add 10% NaOH solution dropwise to stabilize the system pH at 2.5, then add 100g / L of TiCl dropwise at a rate of 0.3ml / min 4 solution, stop adding TiCl dropwise when the resulting product turns red 4 solution and ...

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Abstract

The invention relates to an interference color glass bead and a preparation method thereof. The interference color glass bead is characterized by comprising a spherical common glass flint glass substrate and metal oxide coatings sequentially coated on the outer surface; the metal oxide coating is one layer or more; thickness of each layer of metal oxide coating meets the following formula: 2nd + 1 / 2 lambda = k lambda; n represents the index rate of metal oxide; d represents the thickness of the coating; lambda represents wavelength of interference phase light wave and values from 350 to 770nm; and K is an natural number other than 0. The metal oxide coating on the outer surface of the interference color glass bead has advantages of smoothness, compactness, good reflection performance and diversified and adjustable color; and the preparation process is simple, and convenient for popularization and application.

Description

technical field [0001] The invention relates to an interference colored glass microsphere and a preparation method thereof, belonging to the field of glass microspheres. technical background [0002] Glass microspheres are widely used in road traffic signs, billboards, screens, reflective heat insulation coatings and other fields. At present, there are only two kinds of reflective glass beads, white and silver gray. If other colors are required in practical applications, it may be necessary to add films or pigments of various colors, which will greatly reduce its reflection effect, or use colored glass. However, the glass beads prepared by this method have poor reflective effect, and are usually only used in the decorative field, and are rarely used in the reflective field. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a kind of interference colored glass beads with good reflection performance, variable color...

Claims

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Application Information

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IPC IPC(8): C03C17/23C03C17/34
Inventor 张智徐洪涛胡爱红
Owner HUBEI UNIV OF TECH
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