Najat J.Saleh; Nabeela A. Mohammed
Abstract
High – density polyethylene is an important commercial polymer and it is widelyused for different engineering applications. In the present work, polymer blends werefabricated ...
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High – density polyethylene is an important commercial polymer and it is widelyused for different engineering applications. In the present work, polymer blends werefabricated by mixing two types of polyethylene, high – density polyethylene was mixedwith different weight percent of linear – low – density polyethylene using two – rollmill, the mixing machine was operated at a temperature of 135oC.A series of standard tests (destructive), tensile, impact, hardness, and compressionwere carried out on the prepared samples it was found that the addition of linear – low –density polyethylene to the high – density polyethylene leads to decrease in the modulusof elasticity, tensile strength, tensile strength at break and increase in the % elongation atbreak.For the impact test it was found that the addition of linear – low – densitypolyethylene caused an increase in the impact strength of the material, the polymer blendwith 45 % wt of linear – low – density polyethylene gave the highest value of impactstrength.On the other hand the hardness test was carried out and it was found that the additionof linear – low – density polyethylene leads to decrease the hardness of the polymerblends. Therefore, the neat high – density polyethylene gave the highest hardness value.
