A Study of Some Mechanical, Thermal and Physical Properties of Polymer Blend with Iraqi Kaolin Filler

Abstract

In the present work, polymer blends were fabricated by mixing two polymersof polypropylene and poly (methyl methacrylate) mixed in different weightpercentage and different particle size of Iraqi kaolin. The study of somemechanical, physical and thermal conductivity properties was carried out on allcomposites. The mechanical tests included (impact, hardness, modulus ofelasticity, yield strength, elongation, stress at break and compression), Lee's discmethod was used to calculate the coefficient of the thermal conductivity ofspecimens before and after reinforcement with kaolin powder. The physicalproperties test included absorption tests, as well as X-ray measurement. Theresults have shown that after the reinforcement with different weight percent ofkaolin powder, most mechanical properties such as hardness , modulus ofelasticity and compression increase while impact and elongation decrease withincreasing in weight percentage and a decreasing in particle size. The results haveshown also that the coefficient of thermal conductivity decreases with increaseweight percentage the water gain is decreased with the increase in weight percentand decrease in particle size of the filler. X-ray diffraction pattern of filledsamples indicates that addition of kaolin adversely affects the crystallization ofPP/PMMA blend.