Effect of RTV Silicon Rubber on Some Mechanical Properties of Epoxy/Polyester Polymer Blends

Abstract

Abstract In this research the epoxy/RTVsilicon rubber and unsaturated polyester / RTVsilicon rubber blends were prepared by adding varying weight (3,5, 7,10 and 20)% of (SR ) to either of EP and UPE resins.The aim of research to analyze effect of RTV silicone rubber composition (3, 5, 7, 10 and 20) wt% of the mechanical properties of the epoxy and unsaturated polyester. Mechanical propertiessuch as impact strength, shore D hardness, young modulusand flexural strength were tested.The experimental results showed that the specimensof EP/SR and UPE/SR blends have a maximum values of impact strength (8.13 KJ/m2 and 11.91 KJ/m2) at the addition of 10% SR and 5% SR respectively.Hardness No. decreased slightly when the content of SR increased at a range of 3% to 20% in both of EP/SR and UPE/SR.Also flexural strength decreased rapidly when the content of SR increased at a range of 3% to 20% in both of EP/SR and UPE/SR.