Research Article
Preparation of Modified Kaolin Filler with Cesium and Its Application in Security Paper
Table 1
Mechanical and optical properties of wood paper handsheets loaded with native kaolin and Cs-kaolin.
| | | Mechanical properties | Optical properties |
Wood paper handsheets | Burst index | Tensile index | Tear index | Brightness | Opacity | | Filler % | Kpa·m2/g | N·m/g | mN·m2/g | % | % |
| Kaolin | 0 | 4.88 | 46.20 | 10.25 | 77.10 | 76.70 | 5 | 4.19 | 40.82 | 9.57 | 80.50 | 76.90 | 8 | 4.04 | 36.44 | 9.79 | 81.70 | 77.10 | 12 | 3.84 | 32.28 | 9.43 | 82.30 | 78.00 | 15 | 3.57 | 30.22 | 8.73 | 83.30 | 79.08 |
| Cs-kaolin | 0 | 4.88 | 46.20 | 10.25 | 77.10 | 76.70 | 5 | 4.32 | 41.73 | 10.17 | 81.60 | 77.50 | 8 | 4.14 | 37.28 | 10.16 | 82.66 | 78.00 | 12 | 4.02 | 35.29 | 9.71 | 84.50 | 78.50 | 15 | 3.70 | 32.25 | 9.30 | 85.60 | 79.80 |
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