抄取法制备无石棉密封材料的浆料滤水性能的研究
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摘要
针对无石棉胶乳抄取板造纸法生产中存在的浆料滤水困难问题,研究纤维种类、填料种类、胶乳用量、搅拌速度和完全加入胶乳后的反应时间对其滤水性能的影响。研究发现,在本实验配方中,纤维中木浆、FKF纤维和芳纶会使密封纸板滤水性能变差,而BE-CO6则能改善密封纸板的滤水性;填料中煅烧高岭土对浆料的滤水性贡献最大,陶土次之,而水洗高岭土和滑石粉使滤水性变差,两者影响程度相差不大;随着胶乳的用量增大,滤水性能逐渐得到改善,滤水效果在100份时最好;搅拌速度750r/min的滤水效果最好,之后转速越高,滤水性越差;反应时间2min的滤水效果最好,1和3min次之,4min最差。
In accordance with the slurry filtration problems of non-asbestos latex sheet production,research on the effects of the type of fiber,type of filler,the amount of latex,stirring speed and reaction time after adding all the latex on the slurry filtration performance was carried out.It has been found that,in the experimental formulation,wood pulp,FKF fiber and aramid fiber have negative effect but BE- CO6 silicate fiber has positive effect on the filtration performance of the sealing board;as a filler,calcined kaolin has the largest contribution to slurry drainage,followed by clay,but washed kaolin and talc lead to poor drainage;the filtration improves with the increase of latex dosage;the best drainage can be obtained at 100 parts of latex,750r / min of stirring speed and reaction time of 2min.
In accordance with the slurry filtration problems of non-asbestos latex sheet production,research on the effects of the type of fiber,type of filler,the amount of latex,stirring speed and reaction time after adding all the latex on the slurry filtration performance was carried out.It has been found that,in the experimental formulation,wood pulp,FKF fiber and aramid fiber have negative effect but BE- CO6 silicate fiber has positive effect on the filtration performance of the sealing board;as a filler,calcined kaolin has the largest contribution to slurry drainage,followed by clay,but washed kaolin and talc lead to poor drainage;the filtration improves with the increase of latex dosage;the best drainage can be obtained at 100 parts of latex,750r / min of stirring speed and reaction time of 2min.
引文
[1]夏新兴,田中粟.无石棉胶乳密封材料抄造中改善助留助滤性能的研究[J].中华纸业,2009,4:50.
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[2]安郁琴,刘忠.制浆造纸助剂[M].北京:中国轻工业出版社,2003.
[3]何北海,张美云,卢谦和.造纸原理与工程(第三版)[M].北京:中国轻工业出版社,2010.
[4]刘温霞,邱化玉.造纸湿部化学[M].北京:化学工业出版社,2005.
[5]张俊苗.非石棉纤维与胶乳粘结机理及无石棉胶乳抄取板增强研究[D].西安:陕西科技大学,2007.