摘要
以竹纤维为原料,以环保可降解的羧甲基纤维素钠(CMC)为分散剂兼黏合剂,通过湿法成网制备竹纤维可冲散非织造材料,研究了CMC溶液浓度对竹纤维水中分散性的影响,以及不同长度的竹纤维配比及产品定量对材料强力及可冲散性的影响。结果表明:水中加入分散剂CMC质量分数为1.00%时,竹纤维在水中的分散性好,分散度达95.83%,且制备的竹纤维可冲散非织造材料的均匀性好;随着长纤维(8 mm竹纤维)比例的增加,竹纤维可冲散非织造材料的断裂强力呈明显上升趋势,可冲散率(P)逐步下降;随着产品定量的增加,竹纤维可冲散非织造材料的断裂强力明显上升,P逐步下降;在CMC溶液质量分数为1.00%、5 mm竹纤维/8 mm竹纤维质量比为70/30、产品定量为80 g/m^(2)时,制备的竹纤维可冲散非织造材料兼具良好的力学性能及可冲散性能,干态纵向断裂强力为30.93 N、干态横向断裂强力为12.35 N,P为86.30%。
Dispersible bamboo-fiber nonwoven materials were fabricated using bamboo fibers as raw material and environmentally friendly degradable sodium carboxymethyl cellulose(CMC)as both a dispersant and a binder via wet-laid process.The effects of CMC solution concentration on the dispersibility of bamboo fibers in water,as well as the influences of ratio of bamboo fibers with different lengths and product basis weight on the mechanical properties and dispersibility of the resulting materials,were investigated.The results showed that bamboo fibers exhibited excellent dispersibility in water at a CMC mass fraction of 1.00%,achieving a dispersion degree of 95.83%,and the prepared nonwoven materials showed high uniformity;increasing the proportion of long fibers(8 mm bamboo fiber)led to a marked enhancement in breaking strength,whereas the dispersibility(P)gradually decreased;similarly,an increase in basis weight resulted in significant improvements in breaking strength accompanied by a gradual reduction in P;and under the optimal conditions as follows:1.00%CMC by mass fraction,a 70/30 mass ratio of 5 mm bamboo fiber to 8 mm bamboo fiber,and a basis weight of 80 g/m^(2),the prepared dispersible bamboo-fiber nonwoven materials exhibited both superior mechanical properties and high dispersibility,with dry longitudinal breaking strength of 30.93 N,dry transverse breaking strength of 12.35 N,and P of 86.30%.
作者
朱佳慧
张星
ZHU Jiahui;ZHANG Xing(School of Textile Science and Engineering,Xi′an Polytechnic University,Xi′an 710048)
出处
《合成纤维工业》
2025年第6期17-22,共6页
China Synthetic Fiber Industry
基金
陕西省重点研发项目(2021GY-212)。
关键词
竹纤维
可冲散非织造材料
湿法成网
力学性能
可冲散性能
bamboo fiber
dispersible nonwoven materials
wet-laid process
mechanical properties
dispersibility
