Glass bead with high brightness and preparation technology thereof

Abstract

The invention discloses a glass bead with high brightness. The glass bead comprises following raw materials in parts by weight: 20 to 55 parts of titanium dioxide, 5 to 15 parts of calcium carbonate,10 to 50 parts of barium carbonate, 10 to 25 parts of silica, 10 to 50 parts of barium carbonate, 5 to 25 parts of barium nitrate, 1 to 10 parts of boron trioxide, 0 to 6 parts of strontium carbonate,and 0 to 6 parts of potassium oxide. The invention also relates to a preparation method of the glass bead. The preparation method comprises following steps: step one, mixing raw materials; step two,preparing liquid glass; step three, preparing a matrix of the glass bead; step four, maintaining the temperature of the matrix; step five, washing the glass bead; and step six, drying and cooling. Thepreparation method can prepare the high quality glass bead with high brightness. The procedure is simple and the cost is low. The step that granulates slurry to prepare a precursor in a spray granulation method is eliminated. The technical process is short, the energy consumption is low, and the preparation cost of the hollow glass bead is largely reduced.

Description

technical field [0001] The invention belongs to the field of glass microspheres, and more specifically relates to a high-brightness glass microsphere. At the same time, the invention also relates to a preparation process of high-brightness glass microspheres. Background technique [0002] Glass beads are a new type of material developed in recent years with a wide range of uses and special properties. The product is made of borosilicate raw material through high-tech processing. The product has the advantages of light weight, low thermal conductivity, high strength, and good chemical stability. Its surface has been specially treated to have lipophilic and hydrophobic properties, and it is very easy to disperse in organic material systems. It can be widely used in any products that require appearance and color. [0003] Hollow glass microspheres have been widely used in artificial agate, marble, FRP bowling balls and other suitable materials and high-grade thermal insulati...

AI Technical Summary

Problems solved by technology

[0004] In the process of preparing glass microspheres, the slurry raw materials must be spray-dried into powder before entering the preparation device. However, most of the raw materials for preparing hollow glass microspheres on the market are slurry, so in these process devices for preparing hollow glass microspheres Before, it is necessary to add a spray granulation process, which will inevitably increase the preparation cost, and cause cumbersome process steps, increase the difficulty of process control, and the existing glass microspheres have low strength, poor thermal stability, long preparation process time, and low yield. Low