科研之友
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摘要
Robust and thin membranes of ultra-high molecular weight polyethylene (UHMW-PE) were obtained from a commercial powder material via a melt-drawing technique without any solvent treatment. A combination of rolling and compressing successfully erases the powder boundaries within the initial films, which gives a defect-free structure in a biaxially melt-drawn membrane. The resultant tensile strength was improved up to 90 MPa, but the membrane thickness could be reduced to 6 mu m. Such membrane robustness and thinning are achieved by extended chain crystallization induced during biaxial melt-drawing.
- 出版日期2014
