Precipitated calcium carbonate is a good paper filler, the filler retention rate improve after modification.
轻质碳酸钙是良好的造纸填料，通过改性可有效提高其留着率。
The paper sample analysis indicated that the process improved filler retention, paper ash content and opacity, and decreased white water consistency.
检测纸样结果表明：该工艺提高了填料留着率、成纸灰分、不透明度、降低了白水浓度。
The study showed that this kind of cationic starch has more positive charges and has good effects on the fibers. It has significant effect on filler retention and drainage in deinked pulp.
研究表明，高取代度阳离子淀粉带有更多的正电荷，能更好地作用于纤维，对废纸脱墨浆有显著的助留助滤作用；
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