Hierarchical solid-state structure and mechanical property relationships in cross-rolled polyethylene
Hierarchical solid-state structure and mechanical property relationships in cross-rolled polyethylene
复制标题
交叉轧制聚乙烯的分级固态结构与力学性能关系
DOI:
10.1016/j.polymer.2022.125039
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发表时间:
2022
期刊:
影响因子:
4.6
通讯作者:
Baer, E.
中科院分区:
文献类型:
--
作者:
McMullen, N.;Zhang, C.;Cheng, C.;Wnek, G.E.;Olah, A.;Baer, E.
Deformation of polyethylene by bidirectional cold rolling was investigated. The objective was to better understand the evolution of the hierarchical structure with thickness reduction and the effect on mechanical properties. At a 60% thickness reduction, the thickness recovery after rolling peaked, and the density and crystallinity decreased rapidly resulting in greater optical clarity. Tensile specimens were deformed in uniaxial tension, and it was observed that the yield mechanism shifted from necking and whitening to a diffuse yielding process with extent of rolling. Concomitant greater work hardening, fracture stress, and elastic recovery were also observed upon fracture at both 25 °C and −40 °C. Scanning electron micrographs of the fracture surface revealed discrete buckled microlayers. Furthermore, dynamic mechanical analysis (DMA) revealed the loss tangent peaks associated with the beta and alpha relaxations shifted, suggesting that dilatation rather than compaction was the dominant mode of deformation at 60% thickness reduction.
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DOI:
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发表时间:
1994
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影响因子:
--
作者:
J. Snyder;A. Hiltner;E. Baer
通讯作者:
E. Baer
DOI:
--
发表时间:
1975
期刊:
影响因子:
--
作者:
S. Bahadur
通讯作者:
S. Bahadur
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
S. Pan;H. R. Brown;A. Hiltner;E. Baer
通讯作者:
E. Baer
DOI:
--
发表时间:
1967
期刊:
影响因子:
--
作者:
J. Williams;H. Ford
通讯作者:
H. Ford
DOI:
--
发表时间:
1961
期刊:
影响因子:
--
作者:
Bryce Maxwell;P. Rothschild
通讯作者:
P. Rothschild