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A Study the Effect of UV Light on Pigmented and Unpigmented LDPE | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 27, Issue 4, 2009, Pages 706-716 PDF (453.49 K) | ||
| DOI: 10.30684/etj.27.4.7 | ||
| Authors | ||
| Najat J.saleh; Zanaib Y.shnean | ||
| Abstract | ||
| In the present work, specimens of polymeric composites were prepared from LDPE with different wt% of TiO2 and Fe2O3 using a single screw extruder which operated at a temperature of (150-170) Co. Results obtained reveal that after the addition of 7% of TiO2 to LDPE, some of mechanical properties improved for example tensile strength increased from (18.50 )MPa to (28.12) MPa tensile at break increased from (14.96) MPa to (26.02) MPa, modulus of elasticity increased from (63) MPa to (193.98) MPa, hardness increased from (48 ) to(75),while impact strength decreased from (0.18 ) to (0.02). After the exposure to UV light all mechanical properties declined but pigment LDPE still has higher mechanical properties unpigmented LDPE. Empirical equations were reached which could be used to calculate one of the mechanical properties in terms of exposure time, weight percent of pigment content and other mechanical properties. | ||
| Keywords | ||
| composite material; low; density polyethylene; pigment; Weathering | ||
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