摘要
就不同特性硫酸钙晶须对成纸性能的影响进行了研究.结果显示不同种类硫酸钙晶须在不同用量下,其强度指标呈现不同的变化趋势,留着率的绝对值和提高幅度相差较大,双元助留体系的应用使得留着率有提升但效果各异,改性后的晶须表现出不同的性能特征.综合看改性后的#4晶须(CaSO_4·2H_2O)效果明显,用量20%时抗张强度、撕裂强度、耐折度和留着率较改性前分别提高了7.54%、3.59%、7.14%和89.96%,留着率大幅提高的同时各强度指标也有所增加.强度性能结合留着率综合考虑,#4晶须用于造纸效果更佳.
The effect of different characteristics of calcium sulfate whisker （CSW） on the pa-per properties was studied. The results showed that different types of CSW had a different trend of strength index in different dosage,and the retention rate and its increase amplitude was in different too. Dual retention system should have increased the retention rate but the effect varies with different kinds of CSW,and different types of modified CSW had different properties. The obvious effect of CSW on paper properties is modified # 4 CSW （CaS0 4 ·2H2O）.It;s optimum dosage is 20% , the tensile index, tear index, folding strength and the retention rate increase by 7. 54% ,3. 59% ,7. 41 % and 89. 96% than that of unmodified CSW respectively. A substantial increase of the retention rate, the strength is also increased. The better application effect of CSW in paper making is #4 CSW.
作者
李鸿魁
党育红
孙文道
韦之敏
贠佳
LI Hong-kui DANG Yu-hong SUN Wen-dao WEI Zhi-min YUN Jia(Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, Shaanxi University of Science Technology, Xi’an 710021,China Sichuan Wanrun Non Metallic Mineral Material Co. , Ltd., Guangyuan 628003, China)
出处
《陕西科技大学学报（自然科学版）》
2017年第1期11-15,22,共6页
Journal of Shaanxi University of Science & Technology
基金
陕西省教育厅重点实验室科研计划项目(14JS012)
关键词
硫酸钙晶须
纸张
物理性能
留着率
calcium sulfate whisker
paper
physical property
retention rate
