作者：Wenqiang Mao, Yanxiong Pan, Xiangling Ji, Wei Jiang
关键字：热熔胶粘剂, 氯化聚碳酸丙烯酯, 聚丁二酸丁二醇酯, 扩链反应, 粘接性能
论文来源：期刊
具体来源：Polymer Bulletin, 2025, 82(10), 5121-5137
发表时间：2025年

摘要：传统热熔胶粘剂已广泛应用于汽车、纺织、电子等领域，但其制备原料过度依赖化石能源。氯化聚碳酸丙烯酯（CPPC）作为一种新型热熔胶粘剂，似乎是解决这一问题的一种策略，但提高CPPC基热熔胶粘剂综合性能仍是挑战。本文以二苯基甲烷二异氰酸酯（MDI）为扩链剂，将CPPC与聚丁二酸丁二醇酯（PBS）熔融共混。FTIR和GPC证实两种聚合物与MDI之间发生扩链反应，SEM照片显示扩链改善了CPPC/PBS共混物相容性。加入MDI后，CPPC/PBS/MDI共混物的热稳定性、储能模量（G''）、复数黏度（|η*|）、力学和粘接性能均得到提高。CPPC/PBS/MDI（80/20/1.25）共混物的拉伸强度和搭接剪切强度分别达到41.9 MPa和6.24 MPa，是CPPC/PBS（80/20）共混物的2.5倍和2.0倍。CPPC/PBS/MDI（30/70/1）共混物表现出良好粘接性能，搭接剪切强度为10.19 MPa。因此，具有更好热稳定性、力学和粘接性能的CPPC/PBS/MDI共混物在热熔胶粘剂领域具有应用潜力。

Abstract：The traditional hot melt adhesives have been widely used in automotive, textile, electronics and other fields, but the raw materials for their preparation are overly dependent on fossil energy. Chlorinated poly(propylene carbonate) (CPPC) as a new kind of hot melt adhesive seems to be one strategy to solve this problem. However, improving the comprehensive properties of CPPC-based hot melt adhesives is still a challenge. In this work, CPPC and poly(butylene succinate) (PBS) were melt blended using diphenylmethane diisocyanate (MDI) as a chain extender. FTIR and GPC confirmed that chain extension occurred between the two polymers and MDI. SEM micrographs showed chain extension improved the compatibility of CPPC/PBS blends. The thermal stability, storage modulus (G''), complex viscosity (|η*|), mechanical and adhesive properties of CPPC/PBS/MDI blends were improved upon adding MDI. The tensile strength and lap shear strength of the CPPC/PBS/MDI (80/20/1.25) blend reached 41.9 MPa and 6.24 MPa, respectively, which were 2.5 and 2.0 times that of the CPPC/PBS (80/20) blend. The CPPC/PBS/MDI (30/70/1) blend exhibited good adhesive properties with a lap shear strength of 10.19 MPa. Thus, CPPC/PBS/MDI blends with better thermal stability, mechanical and adhesive properties exhibited potential application in hot melt adhesives.

论文链接：https://doi.org/10.1007/s00289-025-05757-9