Preparation of Bi-directional Isotropic Self Strengthening UHMWPE Plate
At room temperature conditions,molded plates of ultra-high molecular weight polyethylene(UHMWPE)was formed by bi-directional rolling to achieve bi-directional self-reinforced samples,and the technical feasibility of bi-directional uniform improvement of the performance of molded plates was explored,and the influence of rolling ratios on the spherulite deformation of molded plates was investigated,as well as the correlation between the aggregated structure of self-reinforced plates and their mechanical properties.The results show that rolling refines the mean spherulites size of the original molded plate from 71.2 nm to microcrystals of 39.4 nm,and the crystallinity decreases from 45.2％to 40.2％.Some orthogonal crystal systems transform into monoclinic crystal systems.The self-reinforced sheet with a rolling ratio of 36.6％achieves tensile strength of 62 MPa and 60 MPa in both directions,respectively.
Solid State Self-enhancementRoll FormingUltra High Molecular Weight PolyethyleneOrientation
万方数据
维普
