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| Preparation and Application of Titanium Dioxide-kaolin Composite Filler |
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| DOI：10.11980/j.issn.0254-508X.2017.11.007 |
| Key Words:mechanochemical method titanium dioxide kaolin composite filler papermaking application |
| Author Name | Affiliation | | 衣 然1 | 1.天津科技大学造纸学院,天津,300457 | | 惠岚峰1，2 | 1.天津科技大学造纸学院,天津,300457；2.山东鲁南新材料股份有限公司,山东临沂,276100 | | 刘 忠1，* | 1.天津科技大学造纸学院,天津,300457 | | 邸淑美2 | 1.天津科技大学造纸学院,天津,300457；2.山东鲁南新材料股份有限公司,山东临沂,276100 |
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| Abstract:Titanium dioxide-kaolin composite filler was prepared by mechanochemical method. The suitable compositing conditions were obtained by orthogonal experiment. Brightness and covering ability were used to evaluate the effect of composite filler. The optimum compositing conditions were as follows: the dosage of dispersant was 0.3%, m（titanium dioxide）∶m（kaolin）was 5∶5, the grinding time was 0.5 h and the grinding concentration was 45% . Under these conditions, the composite product had good performance; The brightness and covering performance were 92.46% and 30.33 g/m2 respectively. The analysis of composite fillers by SEM, FTIR and XRD showed that the cladding of kaolin with titanium dioxide was not a simple physical reaction, but a chemical reaction. The Si—O—Ti and Al—O—Ti chemical bonds were formed between titanium dioxide and kaolin. So the composite fillers crystal structure changed, and the cladding effect was sigrinbicant. The composite fillers could be substituted for titanium dioxide using in paper. The brightness and covering performance of the composite filler were close to that of titanium dioxide. And the physical index of the paper filled with composite fillers was similar to that of pure titanium dioxide． |
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