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改性淀粉-TiO2体系对含不同填料的脱墨浆助留助滤效果研究
The Retention and Drainage of DIP Containing Different Fillers and the Nanosized TiO2 and Modified Starch Dual-system
收稿日期：  
DOI：10.11980/j.issn.0254-508X.2012.05.004
关键词:  改性淀粉-TiO2体系  填料  助留助滤  纳米TiO2
Key Words:modified starch-TiO2 system  filler  retention and drainage  nanosized TiO2
基金项目:
作者单位
李　艳 华南理工大学制浆造纸工程国家重点实验室，广东广州，510641 
陈小泉 华南理工大学制浆造纸工程国家重点实验室，广东广州，510641 
沈文浩 华南理工大学制浆造纸工程国家重点实验室，广东广州，510641 
刘天龙 华南理工大学制浆造纸工程国家重点实验室，广东广州，510641 
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摘要:改性淀粉-TiO2体系作为助留助滤剂通过与含不同填料的脱墨浆作用，考察对浆料和填料的助留助滤效果。实验结果表明，改性淀粉-TiO2体系对浆料的留着以滑石粉为填料时最好，当两性淀粉(AmS)用量为0.4%、纳米TiO2用量为0.2%时，滑石粉为填料时总留着率达到91.8%，滑石粉留着率为94.3%；高岭土为填料时总留着率为87.8%，高岭土留着率为90.3%；钛白粉为填料时总留着率为87.3%，钛白粉留着率为91.1%；碳酸钙为填料时总留着率为81.4%，碳酸钙留着率为69.5%；滤水时间则是碳酸钙为填料时最少，为20 s，其次分别是滑石粉33 s、钛白粉48 s、高岭土53 s。
Abstract:The retention and drainage of the DIP containing different fillers and the modified starch-TiO2 dual system were investigated in the paper. The results showed that when the dosages of nanosized TiO2 and AmS were 0.20% and 0.4%, respectively, the retention rate of the DIP furnish containing the filler of talc was 91.8%, the retention rate of the talc was 94.3%, retention rates of DIP furnishes containing the fillers of kaolin, titanium dioxide and calcium carbonate were 87.8%, 87.3% and 81.4%, respectively, the retention rates of the kaolin, titanium dioxide and calcium carbonate were 90.3%, 91.1% and 69.5% respectively. The drainage time of the DIP furnishes containing fillers calcium carbonate, talc, titanium dioxide and kaolin were respectively 20 s, 33 s, 48 s and 53 s. This mainly ascribe to the different crystal structures of the fillers.
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