湖南工业大学学报2024，Vol.38Issue(1)：84-90,7.DOI:10.3969/j.issn.1673-9833.2024.01.012
高阻隔耐蒸煮复合包装用聚氨酯胶黏剂的制备与性能
Preparation and Properties of Polyurethane Adhesive for High-Barrier Retort-Resistant Composite Packaging
摘要
Abstract
Based on the reaction of oligomer polyester polyols with isocyanates,a polyurethane adhesive is synthesized with strong adhesion and cooking resistance,which can be used for high barrier composite packaging films,followed by an exploration into the effects of different reaction conditions on the properties of polyurethane adhesives and composite films.Research has found that the initial viscosity of the main agent is positively correlated with the reaction temperature.The higher the R value(the ratio of the amount of isocyanate groups to hydroxyl groups),the higher the initial viscosity and average peeling force of the composite film will be.However,when the R value is too high or the proportion of trialcohol to total alcohol is too large,the synthetic polyurethane adhesive tends to gelation.The composite membrane prepared under optimal conditions is characterzied with a water permeability of 1.05 g/(m2·d),an oxygen permeability of 0.62 cm3/(m2·d),and an improved high-temperature retort resistance performance.关键词
聚氨酯胶黏剂/复合包装/高阻隔性能/耐蒸煮Key words
polyurethane adhesive/composite packaging/high barrier property/retort-resistance分类
化学化工引用本文复制引用
杨坚,李孟琦,邱洁,陈润宇,刘祥贵,余嘉裕,刘跃军..高阻隔耐蒸煮复合包装用聚氨酯胶黏剂的制备与性能[J].湖南工业大学学报,2024,38(1):84-90,7.基金项目
国家自然科学基金委员会青年科学基金资助项目(51903083) （51903083）
湖南省教育厅科学研究基金资助项目(18B291) （18B291）
