具有负泊讼比效应的高分子共混物的结构和工程实现

A real-time measurement system of Poisson’s ratio with the.accuracy of 0.001 micormeter were designed and produced, and the data.collection velocity of the system is 1 millisecond, which provided.a good base for the research work. Primary exploration on the possible.negative Poisson’s ratio effect of polyolefin blends confirmed our.assumption that some polymer blends do exhibit negative Poisson’s.ratio effect. The results showed that a special polyolefin endexhibit a Poisson’s ratio of – 8 with a duration of 25 seconds. Anda steady system with a a Poisson’s ratio of –2.4 was found. On thebasis of the phenomena observed in the xprements, a Rotation-Cavitation model was oncluded to clarify the mechanism of thenegative Poisson’s ratio effect

申请人提出具有网状串珠结构由特殊加工方法形成曲折形态的聚合物共混物具有负泊松比效应。拟详细研究有负泊松比效应的聚合物共混物的结构特征，探索呈现此行为的机理，考查成型中的形态变化，提出工程实现条件，奠定开发应用材料的基础。负泊松比效应材料受外力时呈现膨胀而不同于通常材料，其研究在材料结构设计和开发上有特别重要的意义。