摘要
研究了漂白硫酸盐浆(BKP)的细纤维化程度及用量对高得率浆(HYP)性能的影响。结果表明,在HYP中添加20%的经PFI磨8万转处理的BKP使手抄片的抗张指数提高了103%、z向强度提高了80%,添加20%的经PFI磨5万转处理的BKP使手抄片撕裂指数提高了120%,说明高度细纤维化的BKP能明显改善HYP的机械强度。研究还发现,高度细纤维化的BKP对HYP的紧度和光学性能影响很小。探讨了高度细纤维化的BKP影响HYP性能的机理,发现高度细纤维化的BKP与HYP纤维形成的特殊桥联网状结构能很好地改善纤维间的结合,提高了HYP的机械强度。
The impact fibrillating degree of BKP refining by PFI mill and the amount of fibrillated BKP on the performance of HYP was studied. The results showed that when 20% of BKP treated by PFI mill for 80 thousand revolutions added into HYP, tensile index of the hand sheet increased by 103%; z direction strength increased by 80%, and when 20% of BKP treated by PFI mill for 50 thousand revolutions added into HYP, tear index of the hand sheet increased by 120%. It indicated that BKP with rich fibrils can obviously improve the mechanical strength of HYP. Also, the density and optical properties of HYP hand sheet are less influenced by highly fibrillated BKP. The influence mechanism of highly fibrillated BKP on HYP performances was discussed. The bonding between the fibers is well improved by a special bridge-link network structure formed by BKP fiber whiskers and HYP fibers, which greatly raises the strength properties of HYP.
出处
《中国造纸》
CAS
北大核心
2010年第1期18-22,共5页
China Pulp & Paper
基金
国家科技支撑项目“速生材高得率浆抄造性能的研究”(2006BAD32B05)
