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Effects of Calcined Clay/Nanocelluose Synergistic Titanium Dioxide Filling on the Properties of Decorative Base Paper
Received:March 31, 2022  
DOI：DOI：10.11980/j.issn.0254-508X.2022.12.006
Key Words:nanocellulose  titanium dioxide  calcined clay  decorative base paper  filling
Author NameAffiliationPostcode
SU Yanqun China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing，100102 		100102
ZHANG Ruijuan China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing，100102 		100102
LIU Jingang* China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing，100102 		100102
DU Yanfen China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing，100102 		100102
FU Xianling China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102 100102
GE Jiming China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102 100102
CHEN Qi Patent Office， China National Intellectual Property Administration， Beijing， 100088 100088
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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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