Table 1 Pigment properties of the TiO2-coated barite composite particles.
Mass ratio of rutile TiO2 (R0) /% | Contact angle/° | Oil absorption /(g/100 g) | Whiteness/% | Hiding power/(g/m2) | Relative hiding Power (R)/% | ΔR (R-R0) /% |
|---|---|---|---|---|---|---|
0 (barite) | 22.50 | 11.40 | 89.40 | 155.00 | — | — |
20 | 95.80 | 12.20 | 90.12 | 22.85 | 48.01 | 28.01 |
40 | 110.20 | 12.56 | 90.97 | 15.18 | 72.27 | 32.27 |
50 | 112.50 | 12.85 | 91.35 | 13.16 | 83.36 | 33.36 |
60 | 115.60 | 14.48 | 91.80 | 12.08 | 90.81 | 30.81 |
80 | 109.40 | 16.79 | 92.39 | 11.15 | 98.38 | 18.38 |
100(TiO2) | 33.20 | 24.26 | 94.40 | 10.97 | 100.00 | — |
