拉胀材料即具有负泊松比的材料.文中在简要介绍负泊松比起源的基础上,重点阐述了拉胀高分子材料目前现有的四大种类:泡沫聚合物、微孔聚合物、拉胀纤维和复合材料,并简述其研究现状.介绍了不同研究者关于拉胀性机理研究的观点、模型,指出拉胀机理的研究有待深入,就拉胀高分子材料领域中的研究方向和热点问题提出了一些独到的观点和看法,介绍了笔者在该方向上的相关工作和思路,并对拉胀高分子这一新材料品种的广阔应用前景予以展望.
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