تأثير التقوية بدقائق MgO على الصفات الحرارية و الميكانيكية لراتنج الأيبوكسي

الملخص EN

This research aims to, first : to increased thermal insulation to conbextra epoxy (EP-10) by additive magnesium oxide (MgO) with (5 μm) particle size as a filler with different Weight percentages (10 %, 20 %, 30 %) to resin and study the effect of this additive on thermal insulation of the resin.

Fourier equation was used to calculate the changing in thermal conductivity coefficient (k) for conbextra epoxy (EP-10) before and after addition of magnesium oxide, where the results show improved thermal insulation of the resin by reduced in thermal conductivity coefficient value after oxide addition, and the value of thermal insulation will increased with increasing of additive percentage of magnesium oxide, where it change from(0.24 W / m.ºC) before added oxide to (0.13 W/m.ºC) after addition (30 %) from oxide at temperature (40 ºC) which the best value from oxide additive.

The second : to study the mechanical behavior of the resin after reinforced it by the above weight percentage of magnesium oxide and studied its effect on mechanical properties of the resin which included : impact strength, tensile strength, and compression strength.

It has shown an improvement in these mechanical properties after reinforcement by magnesium oxide where the value of mechanical properties will increase with increasing percentage of reinforcement.

Impact strength increased from (30Kj / m2) to (39Kj / m2) , and tensile strength from (60Mpa)to (74Mpa), and compression strength from(132Mpa)to (146 Mpa), for reinforcing percentages 0 % and 30 % from magnesium oxide respectively.