The study of the bending property of the epoxy (Ep / MgO) and (Ep/SiO2) composites in natural conditions and after immersion in chemical solution. IJP [Internet]. 2019 Jan. 5 [cited 2024 Apr. 29];16(39):93-102. Available from: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/107