Effect of sample thickness on tensile properties of polyethylene

doi:10.19491/j.issn.1001-9278.2022.04.008

Abstract

Abstract:

This paper reported an investigation on the effect of sample thickness on tensile properties of polyethylene （PE）. Through the analysis of tensile tests of PE samples with different thickness， the thickness could generate a great influence on the strength， strain and tensile modulus of PE. However， there was no effect on the yield absorption energy per unit area. In the current design of plastic products， there have been hidden dangers with the tensile properties of PE materials and the thickness of products as two independent parameters.

Key words: polyethylene, thickness, strength, strain, modulus, absorbed energy

CLC Number:

TQ325.1⁺2

WEN Yuan, MAO Xianpeng, XU Kejie. Effect of sample thickness on tensile properties of polyethylene[J]. China Plastics, 2022, 36(4): 43-46.

Figures/Tables 9

Fig.1. Typical curve of polyethylene tensile test

Fig.2. Effect of sample thickness on upper yield strength

Fig.3. Relationship between upper absorption energy and sample cross?sectional area

Fig.4. Effect of specimen thickness on lower yield strength

Fig.5. Relationship between lower yield absorption energy and specimen cross?sectional area

Fig.6. Relationship between yield strength ratio and sample cross?sectional area

Fig.7. Effect of sample thickness on fracture strength

Fig. 8. Effect of sample thickness on tangent modulus

Fig.9. Tensile modulus at different specimen thicknesses

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