阳离子木薯渣二元助留助滤体系的应用研究

Application of the Dual Polymer Retention System of Cationic Cassava Residue in Deinked Pulp

关键词:  阳离子木薯渣  助留助滤  聚合氯化铝

Key Words:cationic cassava residue  retention and drainage  polyaluminium chloride

摘要:探讨了由阳离子木薯渣（CPCD）与聚合氯化铝（PAC）、膨润土等组成的不同二元助留助滤体系对废纸脱墨浆（DIP）留着、滤水性能及纸张物理性能的影响。结果表明，二元体系比CPCD一元助留助滤体系具有更好的助留助滤性能，在所探讨的二元助留助滤体系中，PAC-CPCD助留助滤体系的助留助滤效果比较好，当PAC用量0.6%，CPCD用量0.4%~0.6%时，细小组分的单程留着率最高，可比CPCD一元助留助滤体系增加11.4个百分点，60 s滤液质量最高可达294.4 g。该二元助留助滤体系对成纸的物理强度也有不同程度的提高，当PAC用量0.6%、CPCD用量0.5%时，纸张抗张指数、撕裂指数和耐破指数分别比CPCD一元助留助滤体系增加了7.52%、19.0%和5.33%。

Abstract:The impacts of different dual systems on retention, drainage and handsheet physical properties of deinked pulp were studied. The results showed that the PAC cationic cassava residue （CPCD）or cationic cassava residue bentonite dual retention and drainage systems could improve retention and drainage performances of the deinked furnish more significantly than the CPCD single retention system. The first pass retention of a dual retention and drainage system containing 0.6% PAC and 0.4%~0.6% cationic cassava residue increased by 11.4 percentage points, drainage increased to 294.4 gram in 60 seconds．Compared with the use of 0.5% cationic cassava residue alone, the dual system could also improve the strength of the paper product. The tensile index, tear index and burst index were increased by 7.52%, 19.0% and 5.33% respectively.