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Preparation of Titanium Dioxide/Talc Composite Filler and Its Application in Decorative Base Paper
Received:April 15, 2022  
DOI：DOI：10.11980/j.issn.0254-508X.2022.12.007
Key Words:titanium dioxide  talc  composite filler  decorative base paper  filling
Fund Project:浙江省自然科学基金（LQ23C160001）。
Author NameAffiliationPostcode
ZHANG Yan Key Lab of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
WANG Huile Key Lab of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
ZHAO Huifang* Key Lab of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
QIU Supeng Key Lab of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
HAN Yingying Key Lab of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
ZUO Jinhua Key Lab of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
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Abstract:Mixed/composite fillers of titanium dioxide and kaolin， talc， grounel calcium carbonate （GCC） and wollastonite were added to the decorative base paper by mixing or mechanical grinding methods. The effects of the fillers on paper properties were discussed and the results showed titanium dioxide/talc composite filler was better by mechanical grinding of talc coated with titanium dioxide. In order to meet the coating conditions of titanium dioxide， talc was pre-ground. The optimum pre-grinding conditions of talc was determined by single factor method. The optimum conditions were determined as grinding concentration 50%， grinding time 120 min， and medium ratio 1∶8.5. Under this condition， the particle size of the titanium dioxide/talc composite filler was about 1 μm. The preparation process of the composite filler was optimized by an orthogonal experiment， and the opacity and whiteness of decorative base paper were 98.6% and 86.7%， respectively， when composite grinding time was 50 min， grinding concentration was 50%， medium ratio was 1∶10 and compound ratio of talc and titanium dioxide was 5∶5. In addition， scanning electron microscopy （SEM） and Fourier transform infrared spectroscopy （FT-IR） analyses showed that a new chemical bond， Ti—O—Si bond， was formed between titanium dioxide and talc.
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