金红石型钛白粉 HTR-628
HTR-628 是采用氧化锆、氧化铝进行复合无机包膜，用特殊有机处理剂进行表面改性，具有白度优良、易分散、同时具有亲水和亲油功能，适用于大多数的应用领域，是一种多功能、通用型的金红石型钛白粉；可广泛应用于涂料、塑料、油墨、造纸等领域。
典型技术指标
| Index | Technical specifications | |||
| Inorganic surface treatment | AL2O3,ZrO2 | |||
| Organic surface treatment | Yes | |||
| TiO2 content % (m/m) | ≥ | 93 | ||
| Brightness % | ≥ | 94.5 | ||
| Tint reducing power, Ryenolds number, TCS ≥ | 1900 | |||
| Volatile matters at 105 ℃, %（g/100g） ≤ | 0.5 | |||
| Water soluble matters, % | ≤ | 0.5 | ||
| pH value of water suspension | 6.5～8.5 | |||
| Oil absorption value, % (m/m) ≤ | 20 | |||
| Electrical resistance of aqueous extract, Ωm ≥ | 80 | |||
| Residue on sieve (45 um mesh), % (m/m ） ≤ | 0.02 | |||
| Rutile content, % | ≥ | 98.0 | ||
| Whiteness, (compared with standard sample) | No less than | |||
| Oil dispersible power (Hegemann nukber), ≥ | 6.0 | |||
| Index controlled by the company | Gardner of dry powder | L | ≥ | 100.0 |
| b | ≤ | 1.80 | ||
| Dispersibility underhigh-speed stirring | μm | ≤ | (Typical application under certain indigents) | |
