聚氨酯类玻璃高分子的合成及其紫外屏蔽性能  

Synthesis of polyurethane vitrimer and its UV shielding performance

作　　者：张译心 余雅科 靳刘萍 赵伟 ZHANG Yi-xin;YU Ya-ke;JIN Liu-ping;ZHAO Wei(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2025年第2期8-15,36,共9页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(22171172,21774071)。

摘　　要：类玻璃高分子(vitrimer)是一类具有动态共价键交联网络的高分子,由于其兼具传统热塑性高分子和热固性高分子的性质,近年来引起广泛关注.然而,目前关于vitrimer的研究主要集中在力学性能和再加工性上,忽略了其特殊分子结构赋予的功能特性.基于此,本文在室温、无催化剂条件下,通过双(六元环)碳酸酯和多元胺的高效加成聚合反应,成功合成了一类新型聚氨酯vitrimer,并系统研究了其紫外线屏蔽性能.实验结果表明,所得vitrimer材料不仅在紫外区域表现出卓越的屏蔽效果,而且在可见光区域保持高透过性.此外,研究发现所得vitrimer紫外线屏蔽性能可借助丝网辅助紫外光辐照技术进行按需调节,以适应不同环境下对紫外屏蔽效果的需求.本研究不仅拓展了vitrimer材料在光学材料领域的应用潜力,而且为新型高可见光透过紫外屏蔽材料的开发提供了研究方向.Vitrimers are a class of polymers characterized by a dynamic covalent bond cross-linked network.Due to their combination of properties from both traditional thermoplastic and thermosetting polymers,they have garnered widespread attention in recent years.However,current research on vitrimers primarily focuses on their mechanical properties and reprocessing characteristics,often overlooking the functional properties conferred by their unique molecular structure.In this study,we successfully synthesized a series of polyurethane vitrimers through the efficient addition polymerization reaction of bis(cyclohexyl)carbonate and polyamines under room temperature and without catalysts,systematically investigating their ultraviolet(UV)shielding performance.Experimental results indicate that the resulting vitrimer materials not only exhibit excellent shielding effectiveness in the UV region but also maintain good transparency in the visible light range.Furthermore,studies have found that the UV shielding performance of the resulting vitrimer can be dynamically adjusted using screen-assisted UV irradiation technology,allowing for customization to meet the UV shielding requirements under different environmental conditions.This research not only expands the application potential of vitrimer materials in the field of optical materials but also provides a direction for the development of new high-transparency UV shielding materials.

关 键 词：聚氨酯 类玻璃高分子 紫外屏蔽性能 透明性 光控调节 

分 类 号：TS102.42[轻工技术与工程—纺织工程]