液晶与显示2025，Vol.40Issue(11)：1588-1596,9.DOI:10.37188/CJLCD.2025-0202
基于层状硅酸镁锂纳米片体相增强聚甲基丙烯酸甲酯薄膜的水汽阻隔性能
Enhanced water vapor barrier performance of PMMA films reinforced by laponite nanosheets
摘要
Abstract
To address the loss of flexibility and increased risk of side penetration in commercially applied inorganic/organic composite encapsulation films—issues often resulting from overly thick organic layers,this study investigates strategies for synergistically optimizing the barrier properties and interlayer adhesion of thinned organic layers.We constructed a thinned"sandwich-structured"composite film by incorporating synthesized lithium magnesium silicate(Laponite)nanosheets,both pristine and modified with cetyltrimethylammonium chloride(CTAC),into a polymethyl methacrylate(PMMA)matrix,which was then laminated with silicon nitride(SiNx)layers.The results demonstrate that the incorporated nanosheets significantly enhance the water vapor barrier performance by creating a tortuous diffusion path.Compared to the pristine Laponite system,the CTAC-modified nanosheets,owing to their hydrophobic surface and superior dispersion within the PMMA matrix,led to a remarkable improvement in the overall performance of the CTAC-Laponite-PMMA composite.The resulting film exhibited an ultra-low surface roughness of 0.312 nm,ensuring excellent interfacial adhesion with the adjacent inorganic layers.Consequently,the water vapor transmission rate(WVTR)of the entire sandwich structure was further reduced to 5.90×10-5 g/(m2·day).This work demonstrates a novel approach to co-optimizing barrier properties and interfacial adhesion in thinned organic layers via organically modified nanosheets,offering a promising pathway for developing high-performance,ultra-thin flexible encapsulation.关键词
薄膜封装技术/纳米片/水汽透过率/有机改性Key words
thin film encapsulation/nanosheets/water vapor transmission rate/organically modified分类
信息技术与安全科学引用本文复制引用
栗旭阳,喻志农,张金慧,许海飞,程锦,陈祖新,梁海锋,朱学亮,薛建设,袁广才..基于层状硅酸镁锂纳米片体相增强聚甲基丙烯酸甲酯薄膜的水汽阻隔性能[J].液晶与显示,2025,40(11):1588-1596,9.基金项目
国家重点研发计划(No.2024YFB3614400) （No.2024YFB3614400）
国家自然科学基金(No.62441407) （No.62441407）
西安市科学技术协会青年人才托举计划(No.0959202513125) （No.0959202513125）
陕西省自然科学基础研究计划(No.2024JC-YBQN-0631) Supported by National Key R&D Program of China(No.2024YFB3614400) （No.2024JC-YBQN-0631）
National Natural Science Foundation of China(No.62441407) （No.62441407）
Young Talent Fund of Xi'an Association for Science and Technology(No.0959202513125) （No.0959202513125）
Natural Science Basic Research Program of Shaanxi(No.2024JC-YBQN-0631) （No.2024JC-YBQN-0631）
