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用于不同工作温度的水性聚氨酯压敏胶粘剂的合理设计

Rational Design of Waterborne Polyurethane Pressure Sensitive Adhesives for Different Working Temperatures.

作者信息

Zhao Hui, Xu Ying, Luo Zhen, Gong Cui-Ran, Zheng Yang-Qing, Yu Li-Ming

机构信息

College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, China.

Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350000, China.

出版信息

Materials (Basel). 2022 Mar 8;15(6):2011. doi: 10.3390/ma15062011.

DOI:10.3390/ma15062011
PMID:35329462
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8949434/
Abstract

The appropriate pressure sensitive adhesion performances at working temperature are vital for the applications of waterborne polyurethane (WPU). Understanding the relationship among rheological behaviors, macromolecular structures and adhesive performances can be very useful to the rational design of waterborne polyurethane pressure sensitive adhesives (WPU-PSAs) for different operating temperatures, as well as other kinds of adhesives. In this study, four kinds of WPU-PSAs were prepared by reacting polypropylene glycol (PPG), hydrogenated hydroxyl-terminated polybutadiene (HHTPB), dimethyl alcohol propionic acid (DMPA), 1,6-hexamethylene diisocyanate (HDI) and four kinds of chain extenders. Gel permeation chromatography (GPC), swelling and rheology tests were used in parallel with an analysis of adhesive performances of the dried films of the adhesives. Results showed that, in addition to the nature of chain extenders playing a role on the rheological behaviors and adhesive performances of polymer, the gel content could be used to adjust the macromolecular structure and molecular weight distribution of polymer, thus distinctly affected the adhesive performances of PSA. The relationship among rheological behaviors, macromolecular structure and adhesive performances was investigated, and the rational design of WPU was achieved with appropriate pressure sensitive adhesion properties for different working temperatures of 25 and 60 °C.

摘要

水性聚氨酯（WPU）在工作温度下具有合适的压敏粘合性能对于其应用至关重要。了解流变行为、大分子结构和粘合性能之间的关系，对于合理设计适用于不同工作温度的水性聚氨酯压敏胶粘剂（WPU-PSA）以及其他类型的胶粘剂非常有用。在本研究中，通过使聚丙二醇（PPG）、氢化端羟基聚丁二烯（HHTPB）、二甲基乙醇丙酸（DMPA）、1,6-己二异氰酸酯（HDI）与四种扩链剂反应制备了四种WPU-PSA。凝胶渗透色谱法（GPC）、溶胀和流变学测试与胶粘剂干膜的粘合性能分析同时进行。结果表明，除了扩链剂的性质对聚合物的流变行为和粘合性能有影响外，凝胶含量可用于调节聚合物的大分子结构和分子量分布，从而显著影响PSA的粘合性能。研究了流变行为、大分子结构和粘合性能之间的关系，并实现了WPU的合理设计使其在25℃和60℃的不同工作温度下具有合适的压敏粘合性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d444/8949434/3f144b5b8275/materials-15-02011-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d444/8949434/274df3bbde20/materials-15-02011-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d444/8949434/daa68a90e717/materials-15-02011-g007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d444/8949434/3f144b5b8275/materials-15-02011-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d444/8949434/274df3bbde20/materials-15-02011-g001.jpg
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