摘要
为开发双面聚乳酸(PLA)基辐射制冷非织造材料,以湿法纺丝和静电纺丝分别制备含二氧化硅(SiO_(2))、二氧化钛(TiO_(2))的PLA纤维,构建由湿法纺PLA基纤维(正面)和静电纺PLA基纤维(反面)的双层复合膜,并对其形貌、化学结构、亲疏水性、辐射制冷性能等进行研究。结果表明,湿法纺PLA基纤维内呈现多孔结构,静电纺PLA/SiO_(2)/TiO_(2)纤维比其他纤维直径明显细化。由两种纤维构建的复合膜正反两面疏水接触角升高的同时复合膜表面自清洁能力提升。辐射制冷效果测试发现,复合膜正面红外发射能力较好,反面具有较强的太阳光反射能力。与传统皮革样品相比,复合膜户外降温接近10℃,室内降温接近7℃。
In order to develop double-sided polylactic acid(PLA)-based radiative cooling nonwoven materials,PLA fibers containing silicon dioxide(SiO_(2))and titanium dioxide(TiO_(2))were prepared by wet spinning and electrospinning,respectively.A double-layer composite membrane consisting of wet spun PLA based fibers(front side)and electrospun PLA based fibers(back side)was constructed,and its morphology,chemical structure,hydrophilicity-hydrophobicity,and radiative cooling performance were studied.The results show that wet spun PLA based fibers exhibit a porous structure,while electrospun PLA/SiO_(2)/TiO_(2) fibers have significantly finer diameters than other fibers.The water contact angle on both sides of the composite membrane constructed from two types of fibers increases,while the self-cleaning ability of the composite membrane surface is improved.Through radiative cooling effect testing,it is found that the front side of the composite film has good infrared emission ability,while the back side has strong solar reflection ability.Compared with traditional leather samples,the outdoor cooling of the composite membrane is close to 10℃,and the indoor cooling is close to 7℃.
作者
刘润政
韩宗晟
黄晓卫
宁新
明津法
LIU Runzheng;HAN Zongsheng;HUANG Xiaowei;NING Xin;MING Jinfa(College of Textile&Clothing,Qingdao University,Qingdao 266071,Shandong,China;Industrial Research Institute of Nonwovens&Technical Textiles,Qingdao University,Qingdao 266071,Shandong,China;Shandong Engineering Research Center for Specialty Nonwoven Materials,Qingdao 266071,Shandong,China)
出处
《纺织高校基础科学学报》
2025年第5期9-16,共8页
Basic Sciences Journal of Textile Universities
基金
生物多糖纤维成形与生态纺织国家重点实验室课题(RZ2000003348,ZDKT202109)
企业合作项目(RH 2200000615)。
关键词
聚乳酸
复合膜
辐射制冷
溶液纺丝
polylactic acid
composite membrane
radiative cooling
solution spinning
