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High‐strength polyethylene
Author(s) -
Wu W.,
Black W. B.
Publication year - 1979
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760191606
Subject(s) - ultimate tensile strength , materials science , composite material , polyethylene , modulus , fiber , linear low density polyethylene , young's modulus , tension (geology) , yarn
Polyethylene (PE) continuous filaments having high tensile strength as well as high Young's modulus have been obtained from several linear polyethylene materials by stretching a partially oriented spun yarn to a draw ratio of ≃30. The high draw ratio was readily attained for linear PE fiber extruded at a temperature of at least 250°C and quenched in air while under some intermediate tension. The number average molecular weight of the polymer was found to have the predominant effect on the ultimate tensile strength of the drawn fiber. Yarn with a tensile strength of 19 gpd (167 kg/mm 2 ) and a Young's modulus of 854 gpd (7380 kg/mm 2 ) was produced. Yarn with a Young's modulus of 1145 gpd (9890 kg/mm 2 ) was made by sacrificing some tensile strength.