Weibull statistics of tensile strength distribution of gel-cast ultra-oriented film threads of ultra-high-molecular-weight polyethylene
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- 作者：Yu. M. Boiko ; V. A. Marikhin ; L. P. Myasnikova…
- 刊名：Journal of Materials Science
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：52
- 期：3
- 页码：1727-1735
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
- 出版者：Springer US
- ISSN：1573-4803
- 卷排序：52
文摘
Studies of the potentials of the multi-stage hot-zone drawing technique for enhancing the tensile strength (σ) of ultra-high-molecular-weight polyethylene (UHMWPE) gel-cast highly oriented film threads, the applicability of the Weibull statistics to the σ distribution, and the solvent role in the film thread strength are presented. It is shown that the results of a large number of mechanical measurements for two series of UHMWPE film threads drawn to an ultimate draw ratio (λ) of 120 from xerogels formed from 1.5 % solutions of UHMWPE in decalin or paraffin oil are satisfactorily described by the Weibull model. It is shown that the threads produced are characterised by an average strength σav = 4.7 GPa and 20 % of the samples have σ = 5.2–6.5 GPa. This is higher than the strength of the commercially available gel-spun oriented UHMWPE fibres of σ = 3.5 GPa. It is found that the solvent nature does not affect the tensile strength of the film threads but exerts a considerable influence on the long-term characteristics.