摘要
对比分析了喷射纺丝法(jet-spun)和原纤化处理得到的两种对位芳纶浆粕的比表面积、保水值、动态滤水等特性。扫描电子显微镜(SEM)观察发现,喷射纺丝法制备得到的浆粕1呈薄膜状,比表面积为26.365 m^2/g;原纤化处理得到的浆粕2中存在纳米级直径的原纤化纤维细丝,比表面积为15.157 m^2/g。动态滤水曲线表明,浆粕1的滤水速率更慢,对滤水的阻碍作用更大。浆粕1的纸基材料抗张指数为42.3 N·m/g,高于浆粕2的;浆粕1与对位芳纶纤维混合抄造的纸基材料抗张指数为34.0 N·m/g,同样高于浆粕2与对位芳纶纤维混合抄造纸基材料的。
The structure and performance of two kinds of para-aramid pulp were compared. One was obtained by jet-spun process （ pulp 1 ） , the other was fibrillated by mechanical force （ pulp 2）. In this paper, specific surface area, water retention value （WRV） and property of dynamic drainage of the para-aramid pulps were studied. The results of scanning electron microscopy （ SEM ） showed that pulp 1 had a flexible sheet structure while pulp 2 contained fibrillated nano-fiber. The specific surface area of pulp 1 was 26. 365 m2/g and pulp 2 was 15. 157 m2/g. The dynamic drainage curve indicated that pulp 1＇s drainage rate was lower than pulp 2 so that pulp 1 was more difficult to drain water off. The tensile index of paper-based composite made from pulp 1 was 42.3 N·m/g that was higher than pulp 2 ; And the tensile index of paper-based composite of fiber and pulp 1 was 34.0 N·m/g, which was also higher than that made from fiber and pulp 2.
作者
曹雪鸿
王宜
耿浩
胡健
CAO Xue-hong WANG Yi GENG Hao HU Jian(State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou , Guangdong Province, 510640)
出处
《中国造纸》
CAS
北大核心
2017年第2期18-22,共5页
China Pulp & Paper
关键词
对位芳纶浆粕
微观形态
性能
para-aramid pulps
microtopography
performance
作者简介
曹雪鸿女士，在读硕士研究生；研究方向：合成浆粕结构与性能研究。
通信作者：王宜，副研究员；研究方向：高性能纤维及纸基材料性能研究。
