纸张干燥特性曲线影响因素实验研究

作者：Chen Xiaobin; Wang Yuhang; He Yaohui; Dong Yunyuan; Zheng Qifu; Li Jigeng; Liu Huanbin

来源：Transactions of China Pulp and Paper, 2019, 34(3): 50-53.

DOI：10.11981/j.issn.1000-6842.2019.03.50

• Drying characteristic curve
• Influence factors
• Paper drying

The effects of fiber material, paper basis weight, pulp beating degree, pressing pressure and drying temperature on paper drying characteristic curve were researched in the study. The experimental results showed that: different fiber material and pulp beating degree had little influence on the paper drying characteristic curve, but pulp beating degree affected the initial moisture content of paper drying, the higher pulp beating degree, the higher the initial moisture content was. Paper basis weight had obvious influence on paper drying characteristic curve because of its positive corrilation with paper thickness, the greater the paper basis weight, the harder it was to dry. Pressing pressure not only affected the paper initial moisture content, but also accelerated the drying process. The possible reason was that after the paper was pressed, part of the capillary water which is difficult to dry changed to free water which is easy to dry. Because of the coupling process of heat and mass transfer in paper drying, the higher drying temperature, the greater heat and mass transfer power, and the easier drying occurs. ? 2019, China National Pulp and Paper Research Institute(CNPPRI). All right reserved.

• 单位
  华南理工大学