APPLICATION OF CATIONIC POLYMER MODIFIED WOLLASTONITE AS FILLER
Particle size distribution, shape characteristics, ζ dynamic potential and other physical properties of wollastonite were studied. Natural wollastonite was modified by cationic polymer including cationic starch and cationic polyacrylamide. The difference of strength properties and filler retention rate between wollastonite and modified wollastonite filled paper was determined. The results showed that wollastonite was electronegative, the absolute value of ζ potential was as high as 19 mV. Only by modification of wollastonite with cationic plymer can one reduce ζ potential. Consequently, electrostatic repulsion between filler and fibers was diminished. The tear strength, burst strength and tensile strength of the modified wollastonite filled paper were more greatly increased than wollastonite filled papers.
wollastonite cationic starch cationic polyacrylamide filler
Ma Xiaojuan Chen Lihui Huang Liulian Cao Shilin
College of Material Engineering, Fujian University of Agriculture and Forestry, Fuzhou, 350002, China
国际会议
广州
英文
1507-1510
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）