Optically Tunable Functional Nano-Coatings on Fly Ash-Based Ceramics

该废物再利用项目开发了一种新型纳米涂层粉煤灰颗粒来模拟二氧化钛作为油漆颜料/填料。该策略采用新型高温注入流化床反应器制备可调的SiO2/ZnO/TiO2渐变涂层，增加折射率，增强全内反射和散射，提高白度和不透明度；掺杂二氧化钛可以中和颜色，减少油漆粉化。这些先进的纳米级涂层材料是CI和KIP在材料开发方面长期合作的新方向。从实验室到中试规模的生产扩展将使涂料的大量使用产生显著的经济和环境效益。

This waste reutilisation project develops a novel nanotechnology of coated fly ash particles to simulate titania as paint pigment/filler. The strategy uses a novel high-temperature injector fluidised bed reactor to make tunable coatings of graded SiO2/ZnO/TiO2 layers of increasing refractive index to enhance total internal reflection and scattering to increase whiteness and opacity; doping of the TiO2 neutralises colour and reduces paint chalking. These advanced nanoscale coated materials are a new direction for a long-term partnership between the CI and KIP in materials development. The laboratory- to pilot-scale manufacturing extension will enable high-volume use in paints generating significant economic and environmental outcomes.