PLA/PEG@SiO_(2)超细纤维包装材料及其日间辐射降温性能  

PLA/PEG@SiO_(2)Microfiber Packaging and Its Daytime Radiation Cooling Performance

作　　者：李晗 张恒 赵珂 杨自强 甘益 秦子轩 翟倩 甄琪 LI Han;ZHANG Heng;ZHAO Ke;YANG Ziqiang;GAN Yi;QIN Zixuan;ZHAI Qian;ZHEN Qi(College of Intelligent Textile and Fabric Electronics of Zhongyuan University of Technology,Zhengzhou 451191,China;Henan Yeesain Health Technology Co.,Ltd.,Zhengzhou 452373,China;College of Fashion Technology of Zhongyuan University of Technology,Zhengzhou 451191,China)

机构地区：[1]中原工学院智能纺织与织物电子学院,郑州451191 [2]河南逸祥卫生科技有限公司,郑州452373 [3]中原工学院智能服饰与服装学院,郑州451191

出　　处：《材料导报》2024年第20期290-296,共7页Materials Reports

基　　金：河南省高校科技创新人才支持计划(24HASTIT011);河南省重大科技专项(231100320200);中原工学院优秀科技创新人才支持计划(K2023YXRC01);中原工学院学科骨干教师支持计划(GG202422)。

摘　　要：超细纤维材料兼具有纸的印刷性、加工性和膜的阻隔性、贴合性,广泛适用于柔性包装领域,如何有效降低包装内温度并保证物资安全是柔性包装材料领域和安全防护纺织品领域的共性关键问题。基于此,本工作提出将二氧化硅(SiO_(2))引入聚乳酸/聚乙二醇(PLA/PEG)共混体系中,通过熔喷非织造方法制备PLA/PEG@SiO_(2)超细纤维材料,并对其物理结构、力学性能和辐射降温性能进行试验分析。结果表明:SiO_(2)对PLA成核结晶有积极作用,可以有效改善PLA结晶行为;SiO_(2)颗粒负载于纤维表面,有效提升了纤维表面粗糙度(Sa);随着SiO_(2)质量分数从0%增大到2.5%,纤维平均直径从2.65μm增大至7.11μm,表面粗糙度从7.4μm增大至12.7μm。受益于上述超细纤维结构特征,PLA/PEG@SiO_(2)超细纤维材料样品发射率和反射率最高可至87.5%和98.1%,测试温差最高可达8.9℃,具有优异的日间辐射降温性能。同时,PLA/PEG@SiO_(2)超细纤维材料样品对水、茶和咖啡等液体有优异的屏蔽性能,并表现出良好的可印刷书写性和异形裁剪性,有望为柔性包装和户外运动等领域提供一种新型日间辐射降温用柔性纤维材料。Microfiber materials are widely used in the field of flexible packaging with both the printability and processability of paper,and the barrier and laminating properties of film,there is a key problem common to the field of flexible packaging materials and safety textiles:how to effectively reduce the internal temperature of the package to ensure the safety of materials.Based on this,this work proposes to introduce silicon dioxide(SiO_(2))into poly lactic acid/poly ethylene glycol(PLA/PEG)blending system,then prepare PLA/PEG@SiO_(2)microfiber material by melt blown,and test its physical structure,mechanical properties and radiative cooling properties.The results show that SiO_(2)has a positive effect on the nucleation and crystallization of PLA,which can effectively improve the crystallization behavior of PLA;SiO_(2)particles can be loaded on the fiber surface,which effectively improves the surface roughness(Sa)of the fibers;and as the mass ratio of SiO_(2)is increased to 2.5%,the average diameter of the fibers increases to 7.11μm,and the surface roughness increases to 12.7μm.Benefit from the above microfiber structure characteristics of microfiber material samples emissivity and reflectivity up to 87.5%and 98.1%,the test temperature difference of up to 8.9℃,with excellent daytime radiation cooling performance.In addition,the PLA/PEG@SiO_(2)microfiber material exhibits excellent shielding performance against liquids such as water,tea and coffee,exhibit good printability and shaped cutability,which is expected to provide a new flexible fiber material for daytime radiative cooling in the fields of flexible packaging and outdoor sports.

关 键 词：超细纤维 包装 聚乳酸(PLA) 二氧化硅(SiO_(2)) 熔喷 日间辐射降温 非织造 

分 类 号：TB484[一般工业技术—包装工程]