植物油基聚酯酰胺的合成及其胶黏剂应用
Poly(ester amide)derived from Low-Value Plant oil as Reusable Low-Temperature Tolerant Adhesives
以植物油来源的长链二酸 C21 为原料,利用熔融缩聚法制备多种交联型聚酯酰胺,对其热力学性质及胶结性能进行表征分析。结果表明:聚酯酰胺内部的羟基和酯基是可再加工的。酯基、酰胺基和游离二羧酸之间的氢键具有很强的内聚性和界面附着力。因此,聚酯酰胺在热熔胶应用方面显示出巨大的潜力。其中,PEA1.3的最佳抗剪强度为 11.0 MPa,更重要的是在低温条件下,即使在液氮(-196℃)中,也能保持较高的粘附性能,为生物质制备可重复使用和耐低温粘合剂提供了理论依据。
A variety of cross-linked polyester amides were prepared from long chain dicarbonate(C21,derived from vegetable oil)by melt polycondensation.Their thermodynamic properties and cementation properties were characterized.The results show that the hydroxyl group and ester group in polyester amide can be reprocessed.The hydrogen bond between ester group,amide group and free dicarboxylic acid has strong cohesibility and interfacial adhesion.Therefore,polyester amide shows great potential in the application of hot melt adhesive.Among them,the best shear strength of PEA1.3 is 11.0 MPa.More importantly,it can maintain high adhesion performance under low temperature conditions,even in liquid nitrogen(-196℃),which provides a theoretical basis for the preparation of reusable and low-temperature resistant adhesive from biomass.
何娟;丁永良;汪钟凯;
安徽农业大学林学与园林学院 合肥 230036;安徽农业大学林学与园林学院 合肥 230036;安徽农业大学林学与园林学院 合肥 230036;
vegetable oil polyester amide adhesive low-temperature tolerant.
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