纯振动场作用下聚合物粘弹性能的微观研究  

MICROCOSMIC RESEARCH OF VISCOELASTICITY OF POLYMER UNDER PURE VIBRATION FIELD

作　　者：曾广胜[1] 瞿金平[1] 徐百平[1] 何和智[1] 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程研究中心,广州510640

出　　处：《现代塑料加工应用》2005年第2期9-13,共5页Modern Plastics Processing and Applications

基　　金：国家自然科学基金资助项目(20074010);国家自然科学基金仪器基金资助项目(20027002)。

摘　　要：通过对聚合物大分子与其他低分子的比较,指出了聚合物大分子具有独特分子结构、大的相对分子质量和长的分子链,以及由此引起的一系列特有的物理化学性能。从微观的角度解释了振动场作用下,聚合物大分子的运动情况,提出了聚合物大分子在振动状态下的橡皮筋模型,比较了直接加热与纯振动场作用下两种不同换能方式对聚合物固体材料塑化性能的影响,得出了纯振动场作用比直接加热更能促进聚合物材料塑化的结论。按照橡皮筋模型的原理,建立了相应的力学模型,运用偏微分方法对该力学模型进行求解,找出了振动场对高聚物的作用机理。Macromolecule of polymer and small molecule of other thing were compared, special structure, big molecular weight and long molecular chain of polymer were pointed,which brought a series of physical chemistry performance. Movement of polymer molecule with vibration field was explained from microcosmic molecule aspect. The elastic band model of polymer molecule with vibration field was brought forward, the influence upon the plastic capability of polymer molecule,which was made by heating or vibration was compared, and the effect of vibration was more useful than that of heating. According to the theory of the plastic band model, a dynamics model was build and solved with the help of the knowledge about parting differential coefficient. The mechanism about the vibration field and polymer was found.

关 键 词：场作用 微观研究 粘弹性能 聚合物大分子 物理化学性能 相对分子质量 直接加热 力学模型 聚合物材料 分子结构 塑化性能 振动状态 运动情况 微分方法 作用机理 橡皮筋 低分子 分子链 体材料 高聚物 振动场 

分 类 号：TQ317[化学工程—高聚物工业]