Mechanical, Electrical and Thermal Characteristics of HAF/ CR/LDPE Composites | ||||
| Egyptian Journal of Solids | ||||
| Article 6, Volume 32, Issue 2, 2009, Page 165-176 PDF (208.2 K) | ||||
| DOI: 10.21608/ejs.2009.148847 | ||||
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| Abstract | ||||
| The effect of low density polyethylene (LDPE) concentrations on the mechanical, electrical and thermal characteristics of HAF/CR/LDPE composites has been studied. The elastic modulus values obtained from the stress – strain curves verify the requirements of the standard linear solid model. The first cycle hysteresis area FAH and the elastic recovery (ER) were found to be dependent on the (LDPE) content. The d.c. conductivity was found to decrease with increasing (LDPE) concentrations and showed a marked drop at the crystalline melting temperature of (LDPE) phase, 393 K, followed by an increase above this temperature with average activation energy 0.79 eV. The crystalline melting temperature obtained from the conductivity _ temperature relationship in agreement with that obtained by using differential scanning calorimetry (DSC). The temperature dependence of d.c. conductivity above 393 K was in favour of the variable range hopping (VRH) model. | ||||
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