A COMPARISON BETWEEN TWO GROUND TIRE RUBBER SURFACE TREATMENTS TO PRODUCE COMPOUNDS BASED ON LINEAR LOW DENSITY POLYETHYLENE VIA ROTATIONAL MOLDING

摘要

This work compares the efficiency of two ground tire rubber (GTR) surface treatments:a coupling agent (maleated polyethylene,MAPE) addition via solution treatment and a devulcanization process using a microwave treatment.The treated and untreated GTR particles were dry-blended with linear low density polyethylene (LLDPE) to produce the compounds via rotational molding.In particular,the effect of MAPE and microwave treatments were investigated to modify the physical (density) and mechanical (tension,flexion and impact) properties of the resulting compounds at room temperature.The results showed that both GTR treatments led to limited increase of tensile strength and impact strength,while the tensile modulus,elongation at break,fiexural modulus and density were almost unchanged for a fixed GTR content.