Biaxial Stretching of Ultrahigh Strength Polyolefinic Gel Films UHMWPE and UHMWPP

超高分子量聚乙烯（UHMPVPE）和聚丙烯 （聚丙烯）聚合物凝胶纤维，如果适当取向，可以产生良好的， 机械性能可与一些最强的材料相媲美 例如钢和碳纤维。 凝胶UHMWPE纤维显示出高的 在纵向方向上的强度，但其强度在 横向方向有些受限。 为了改善尺寸 稳定性和实现均匀的机械强度， 纤维的双轴取向和交联正在进行中。 这 基本的，实验性的研究，当完成时，预计将找到一个 凝胶UHMWPE纤维在航空航天和海洋应用中的更广泛用途。

Ultrahigh molecular weight polyethylene (UHMPVPE) and polypropylene (UHMWPP) polymer gel fibers, if properly oriented, can yield good mechanical properties comparable to some of the strongest materials such as steels and carbon fibers. The gel UHMWPE fibers show high strength in the longitudinal direction but their strength in the lateral direction is somewhat limited. To improve dimensional stability and achieve uniform mechanical strength, a combination of biaxial orientation and cross-linking of the fibers is underway. This fundamental, experimental study, when completed, is expected to find a broader use of gel UHMWPE fibers in aerospace and marine applications.