案例库 · 产品与设计 · 技术决策 · 2001
这条还没译成中文，下面是英文原文。
Pilkington coated glass with TiO2 so sunlight and rain clean it themselves
A nanometre TiO2 layer breaks down organic dirt in UV and turns glass hydrophilic so rain sheets it away.
NSG Group (Pilkington)
那一手
Windows on high buildings are hard and costly to reach, so dirt stays until a crew crane or cradle is paid to remove it.
Pilkington, part of NSG Group, laid a nanometre-layer TiO2 coating on the glass during manufacture, giving it a dual self-cleaning action rather than a manual one.
The layer is photocatalytic, breaking organic deposits down under UV, and hydrophilic, so rainwater runs off in a sheet and carries the debris away instead of leaving droplets.
为什么管用
- It converts a maintenance cost into a chemical reaction that runs for free every day.
- The coating reacts with UV, so it works hardest exactly where buildings are sunny and dirty.
- Hydrophilic sheeting removes dirt without streaking, which a hydrophobic bead would not do.
- It requires no extra power, chemicals or labour after installation.
可以搬走什么
Use a cheap continuous input (light and rain) to do the recurring work you previously paid people to do.
后来呢
Pilkington Activ, sold as the world's first self-cleaning glass, became a full product family including solar-control variants and was used in facades, skylights and conservatories; competitors followed with their own photocatalytic glass.
资料来源
- What is Self-cleaning Glass?
- Photocatalytic degradation of soot deposition: Self-cleaning effect on titanium dioxide coated cementitious materials
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