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| 煅烧土/纳米纤维素协同二氧化钛加填对装饰原纸性能的影响 |
| Effects of Calcined Clay/Nanocelluose Synergistic Titanium Dioxide Filling on the Properties of Decorative Base Paper |
| 收稿日期：2022-03-31 |
| DOI：DOI：10.11980/j.issn.0254-508X.2022.12.006 |
| 关键词: 纳米纤维素 二氧化钛 煅烧土 装饰原纸 加填 |
| Key Words:nanocellulose titanium dioxide calcined clay decorative base paper filling |
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| 摘要:以3种不同性能煅烧土取代20%二氧化钛用于装饰原纸的加填，并分析了对装饰原纸性能的影响；以6%纳米纤维素对二氧化钛进行高速预分散，并分析了纳米纤维素-二氧化钛预分散体加填对装饰原纸性能的影响。结果表明，高吸油煅烧土因为具有较高的比表面积和吸油值，可以改善浆料的滤水性能和纸张的遮盖性能，缺点是会降低纸张抗张强度。利用6%纳米纤维素对二氧化钛进行高速预分散并用于纸张加填，填料留着率从未预分散时的65%左右提高至73%左右，装饰原纸的遮盖性能也有所提高，特别是湿遮盖性能，装饰原纸的湿不透明度从未预分散时的84.1%~84.5%提高至86.5%~88.0%。纳米纤维素的存在促进了纸浆纤维结合，使纸张的透气性能明显降低。 |
| Abstract:Three kinds of calcined clays with different properties were used to replace 20% of titanium dioxide for decorative base paper filling， and the effects on the performance of filling were analyzed. Titanium dioxide was high-speed pre-dispersed with 6% nanocellulose， and the effects of nanocellulose-titanium dioxide pre-dispersion filling on the properties of decorative base paper were analyzed， too. The results showed that high oil absorption calcined clay could improve the drainage performance of the pulp and the covering performance of the paper because of its high specific surface area and oil absorption capacity， with the disadvantage of reducing the tensile strength of the paper. High-speed pre-dispersion of titanium dioxide with 6% nanocellulose for paper filling could improve the filler retention from about 65% to about 73%， and improved the covering performance of decorative base paper， especially wet covering performance. The wet opacity of decorative base paper was increased from 84.1%~84.5% to 86.5%~88.0%. The presence of nanocellulose promoted the interaction between fiber in the pulp and caused a significant reduction in the air permeability of the paper. |
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