Strengthening and Toughening of Unsaturated Polyester by Using Some Additives in Gear Application

Abstract

In present paper a new composite materials of (polyester/ (GF, SiC, PVC, Cu)) was prepared and studied to be used in gear applications. Samples were prepared with range of short length fiber (0.02-0.08 mm) and the weight fraction of E-glass fiber varying from (0-25)% . The best sample according to the wear resistance criterion was selected and some additives were used to improve impact, tensile, hardness, and thermal conductivity . These additives are 5% SiC, 6% PVC and 4% Cu. Samples properties were evaluated by using standard mechanical and physical testing. The results show improvement in all mechanical and thermal properties. Although the tensile strength decreases with increasing volume fraction of fiber content.

Enhancing vinyl ester properties with eco‐friendly sustainable biochar filler

“…Biochar is also capable of improving the wear characteristics in polymers 14 . It is important to note that the characteristics of biochar vary depending on the source material; all biochar from different sources cannot produce the same properties due to their structural variations 15,16 . This property influences the nature of the composite when it is reinforced with polymer.…”