| 摘要 |
The present disclosure relates to a method of making coated perlite flakes comprises: (i) providing perlite flakes; (ii) applying a layer of tin oxide on the perlite flakes to obtain tin oxide coated perlite flakes; (iii) applying a layer titanium dioxide on the tin oxide coated perlite flakes obtained in step (ii) to obtain titanium dioxide and tin oxide coated perlite flakes; and (iv) applying a layer of iron oxide to the titanium dioxide and tin oxide coated perlite flakes to obtain the coated perlite flakes. The present disclosure also relates to coated perlite flakes comprising: perlite flakes with layer of tin oxide, then a layer of titanium dioxide, and then a layer of iron oxide. |
