High-strength polyethylene
| Autor: | W. Wu, W. B. Black |
|---|---|
| Rok vydání: | 1979 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Tension (physics) Modulus General Chemistry Polymer Polyethylene Linear low-density polyethylene chemistry.chemical_compound chemistry Ultimate tensile strength Materials Chemistry Molar mass distribution Fiber Composite material |
| Zdroj: | Polymer Engineering and Science. 19:1163-1169 |
| ISSN: | 1548-2634 0032-3888 |
| DOI: | 10.1002/pen.760191606 |
| Popis: | 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/mm2) and a Young's modulus of 854 gpd (7380 kg/mm2) was produced. Yarn with a Young's modulus of 1145 gpd (9890 kg/mm2) was made by sacrificing some tensile strength. |
| Databáze: | OpenAIRE |
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