摘要
为获得亲水性良好的聚丙烯非织造布,选用纳米二氧化硅溶胶为亲水成分,以聚丙烯酸酯乳液为胶黏剂,以异丙醇和去离子水为稀释剂配置亲水整理剂,然后将所得整理剂用于聚丙烯非织造布的亲水后整理。优化亲水整理剂中各组分的含量,探究后整理焙烘温度和时间,表征整理所得聚丙烯非织造布的亲水性能。结果表明:当二氧化硅溶胶质量分数为0.8%,聚丙烯酸酯质量分数为4.0%,异丙醇质量分数为24.0%,余量为水时,可获得性能良好的亲水整理剂;当烘干温度为60℃,烘干时间为300 s时,经亲水整理剂整理后的聚丙烯非织造布的水接触角为0°;相比未整理布样,整理后的非织造布的纤维表面出现胶黏剂和二氧化硅微球层组成的膜状物,断裂强力和断裂伸长几乎无变化,纯水通量明显增大;经60℃的水和乙醇分别处理3 h后,整理所得聚丙烯非织造布的接触角仅为23°和32°,证明制得的聚丙烯非织造布具有良好的亲水耐久性。
In order to obtain hydrophilic polypropylene nonwovens,a hydrophilic finishing agent was prepared by using nano-silica gel as hydrophilic ingredient,polyacrylate emulsion as the adhesive,isopropanol and deionized water as the diluent.Then,the finishing agent was applied for hydrophilic post-finishing of polypropylene nonwovens.The content of each component in the agent was optimized,and the baking temperature and time of the post-finishing were explored,respectively.The hydrophilic properties of the finished PP nonwovens were characterized.The results showed that:when the content of silica sol,the polyacrylate dose and the isopropanol dose were 0.8%,4.0%and 24.0%respectively,and the residue was water,a hydrophilic finishing agent with good performance could be obtained.When the drying temperature was 60℃,and the drying time was 300 s,the water contact angle of polypropylene nonwoven finished by the agent was 0°.Compared with the unfinished fabrics,a film-like structure composed of adhesives and silica microsphere layers appeared on the fiber surface of the finished nonwovens;the breaking strength and elongation were almost unchanged,and the pure water flux increased.After being cooked in water and ethanol at 60℃for 3 hours,the contact angles of the finished polypropylene nonwovens were only 23°and 32°,proving that the obtained polypropylene nonwovens have good hydrophilic durability.
作者
张向阳
李成才
朱海霖
赫雨萍
刘国金
ZHANG Xiangyang;LI Chengcai;ZHU Hailin;HE Yuping;LIU Guojin(Zhejiang Key Laboratory of Fiber Materials and Manufacturing Technology,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《浙江理工大学学报（自然科学版）》
2020年第4期457-463,共7页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
关键词
聚丙烯
非织造布
亲水整理
二氧化硅
耐久性
polypropylene
nonwovens
hydrophilic finishing
silica
durability
