Flexible glass and preparation method thereof

Abstract

The invention discloses flexible glass and a preparation method thereof. The flexible glass is prepared from the following raw materials in parts by weight: 60.04 to 63.01 parts by weight of silicon dioxide, 16.7 to 21.5 parts by weight of aluminum oxide, 12.93 to 19.85 parts by weight of boric oxide, 2.43 to 14.19 parts by weight of calcium carbonate, 0.16 to 2.07 parts by weight of magnesium oxide, 0.5 to 2.74 parts by weight of strontium carbonate and 0.12 to 4.16 parts by weight of barium nitrate. The method comprises the following steps: 1, pouring raw materials into a mixer, and uniformly mixing to form a mixture; step 2, adding the mixture in the step 1 into a glass kiln through a batch feeder, heating to melt glass, clarifying the molten glass in a platinum feeding channel, and flowing the clarified glass into a stay tube tunnel; 3, drawing the molten glass into a long glass tube in a tube drawing tunnel by a traction tube drawing machine, wherein the interior of the tube drawing tunnel is in a polar atmosphere; step 4, transversely and longitudinally cutting the glass tube by using a laser cutting machine according to specification requirements to form a glass sheet; and step 5, inspecting the glass sheet to prepare a flexible glass product.

Description

technical field [0001] The invention belongs to the field of photoelectric display, in particular to a flexible glass and a preparation method thereof. Background technique [0002] Flexible glass refers to a glass material with a thickness of ≤0.1 mm and good bending toughness. The smaller the thickness, the smaller the critical bending radius. In addition to good flexibility, flexible glass still maintains the inherent properties of glass, such as high hardness, high transparency, high thermal stability, and chemical resistance. Flexible glass will be widely used in optoelectronic display, lighting, solar energy, aerospace and other fields. . [0003] According to the research status at home and abroad, the preparation methods of flexible glass can be divided into primary molding and secondary molding according to the number of sections. Primary molding includes overflow down-draw method, float method and slit down-draw method; Pull again. [0004] The overflow down-dra...

AI Technical Summary

Problems solved by technology

The study found that in the drawing and thinning process, due to the influence of surface tension, the original glass will be subjected to a large transverse shrinkage force, which will cause the original glass to shrink sharply in width after drawing, making the prepared flexible The width of the glass plate is even less than 30% of the original plate width, it is difficult to produce large-size flexible glass, and the thickness difference is as high as 10 μm to 15 μm, the surface roughness is greater than 0.110 μm, the surface quality is not good, and it is difficult to be used in the field of optoelectronic display

[0008] The chemical thinning method is a method of etching the glass surface with an acid solution to change the structure of the glass surface to reduce the thickness of the glass, but the glass is fragile in the subsequent polishing process and the yield is low.

[0009] In summary, the flexible glass produced in the existing technology is difficult to meet the higher resolution display requirements