JP2005095894A5

JP2005095894A5 -

Info

Publication number: JP2005095894A5
Application number: JP2004327844A
Authority: JP
Filing date: 2004-11-11
Publication date: 2005-08-11
Anticipated expiration: 2018-03-12

Claims

A method of producing a titanium dioxide layer having at least a crystalline phase, wherein the titanium dioxide layer is a self-cleaning coating that can be activated by photocatalysis formed on a float glass ribbon, and the coating is ultraviolet A layer that can have a photocatalytically activated self-cleaning reaction rate of at least 2 × 10 ⁻³ cm ⁻¹ min− ¹ when exposed to
Placing the coating device above the tin bath or downstream of the tin bath;
Through the coating apparatus, the titanium dioxide precursor is sent over the surface of a glass ribbon having a temperature of at least 400 ° C. (752 ° F.) and having a sodium ion diffusion barrier layer; and then annealing the glass;
A method of forming a titanium dioxide layer comprising steps, whereby the surface roughness (RMS) is in the range of 13.13-23.08.

The glass batch material is melted in a furnace; the molten glass is fed onto a molten tin bath; the molten glass is pulled across the tin bath, thereby sizing the glass and cooling in a controlled manner. Form a stable float glass ribbon; remove the float ribbon from the tin bath; move the float ribbon through the furnace by a transport roller to anneal the float ribbon; place the float ribbon on the transport roller In a method of forming a float glass ribbon, including various steps, wherein the ribbon is moved to a cutting position and the ribbon is cut into a glass sheet.
A self-cleaning coating that can be activated by photocatalysis during the formation of the float process ribbon is deposited on the float process ribbon having the other main surface opposite to one main surface, wherein the tin bath Wherein the main surface that has been in contact with has diffused tin therein and the deposition is carried out over the main surface having diffused tin through a sodium ion diffusion barrier layer.

The method according to claim 1 or 2, wherein the thickness of the sodium ion diffusion barrier layer is less than 0.1 µm.

A photocatalytically active coated article comprising:
A glass substrate having an air side major surface having sodium ions therein and a main surface defined as a tin side major surface having diffused tin opposite thereto; and a coating on the air side major surface A photocatalytically active titanium dioxide layer having a first surface and an opposite surface defined as a second surface on the air side major surface side of the glass substrate, the second surface of the layer comprising sodium ions Said coating in contact with the air side main surface of the glass substrate through a diffusion barrier layer and may have sodium ions diffused into it from the air side main surface of the glass substrate;
Including
The photocatalytically active titanium dioxide layer comprises a combination of anatase and amorphous phases of titanium dioxide, the layer having a thickness in the range of 200-2100 mm and a photocatalytically active self-cleaning reaction of at least 2 × 10 ⁻³ cm ⁻¹ min− ^1. Said coated article having a velocity and a surface roughness (RMS) in the range of 13.13-23.08.

A self-cleaning product that can be activated by photocatalysis,
When having a first main surface and an opposite main surface defined as a second main surface, the first main surface is formed while pulling across the molten tin bath into the shape of a glass ribbon while cooling the molten glass A glass substrate having tin diffused therein; and at least deposited by chemical vapor deposition at a temperature in the range of at least 400-800 ° C. present on the second major surface via a sodium ion diffusion barrier layer, Can be activated by photocatalysis with a surface roughness (RMS) in the range of 13.13-23.08, which can have a photocatalytic activation self-cleaning reaction rate of 2 × 10 ⁻³ cm ⁻¹ min− ^1. Self-cleaning metal oxide coating;
The manufactured article comprising:

A self-cleaning article activated by photocatalysis,
A first major surface and an opposite major surface defined as a second major surface, the first major surface being thin with tin oxide diffused therein when forming a glass ribbon on a molten tin bath A glass substrate having a layer, wherein at least one of the major surfaces comprises a photocatalytically activated self-cleaning metal oxide coating deposited thereon through a sodium ion diffusion barrier layer;
The metal oxide coating has a thickness in the range of 200-2100 mm, a surface roughness (RMS) in the range of 13.13-23.08, and at least 2 × 10 ⁻³ cm ⁻¹ min− ¹ . A self-cleaning article having a photocatalytically active self-cleaning reaction rate.

A self-cleaning article activated by photocatalysis,
A substrate having a first major surface and a second major surface; and a photocatalytically activated metal oxide coating deposited on at least one of the major surfaces via a sodium ion diffusion barrier layer;
The metal oxide coating has a thickness in the range of 200-2100 mm, a surface in the range of at least 2 × 10 ⁻³ cm ⁻¹ min− ¹ photocatalytically active self-cleaning reaction and 13.13-23.08. Self-cleaning article having roughness (RMS).

The article according to any one of claims 4 to 7, wherein the sodium ion diffusion barrier layer has a thickness of less than 0.1 µm.