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Study of Mechanical Properties of PP/LLDPE Crosslinked Blend

Pang Jo Chun

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Abstract

PP/LLDPE blends with good mechanical properties were prepared by means of two step crosslinking process The results of experiments indicated that when the blending ratio of PP/LLDPE/SBS/Crosslinking agent was 80/20/10/3 (mass ratio), the impact strength, tensile strength and elongation at break of the blend were 466 3J/m, 27 1MPa and 715 1% respectively, increased by 262%, 8 28% and 115% respectively, compared with those of non crosslinked PP/LLDPE blend The existence of crosslinking action made the brittle ductile transition point of the blends shift in advance The increase of the content of the crosslinking agent could improve the mechanical properties of the blends, but the improvement decreased with the increase of the content of the crossling agent

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What this paper is about

PP/LLDPE blends with good mechanical properties were prepared by means of two step crosslinking process The results of experiments indicated that when the blending ratio of PP/LLDPE/SBS/Crosslinking agent was 80/20/10/3 (mass ratio), the impact strength, tensile strength and elongation at break of the blend were 466 3J/m, 27 1MPa and 715 1% respectively, increased by 262%, 8 28% and 115% respectively, compared with those of non crosslinked PP/LLDPE blend The existence of crosslinking action made the brittle ductile transition point of the blends shift in advance The increase of the content of the crosslinking agent could improve the mechanical properties of the blends, but the improvement decreased with the increase of the content of the crossling agent

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Available abstract

PP/LLDPE blends with good mechanical properties were prepared by means of two step crosslinking process The results of experiments indicated that when the blending ratio of PP/LLDPE/SBS/Crosslinking agent was 80/20/10/3 (mass ratio), the impact strength, tensile strength and elongation at break of the blend were 466 3J/m, 27 1MPa and 715 1% respectively, increased by 262%, 8 28% and 115% respectively, compared with those of non crosslinked PP/LLDPE blend The existence of crosslinking action made the brittle ductile transition point of the blends shift in advance The increase of the content of the crosslinking agent could improve the mechanical properties of the blends, but the improvement decreased with the increase of the content of the crossling agent

Key concepts: Materials science, Linear low-density polyethylene, Ultimate tensile strength, Elongation, Composite material, Brittleness, Polymer blend, Izod impact strength test

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