Characterization of thermo-physical and hardness properties of unsaturated polyester resin hybrid nano composites Sihama Issa Salih1, Waleed Bdaiwi Salih2, Husam Sakin Hamad2. (2018). Iraqi Journal of Physics, 16(37), 136-148. https://doi.org/10.30723/ijp.v16i37.85