Pengaruh Komposisi Kobalt Dan Katalis Terhadap Kekuatan Tarik Sambungan Pipa Fiberglass Reinforced Plastic (Frp)

Abstract

Fiberglass Reinforced Plastic (FRP) pipes are widely used in piping systems exposed to corrosive environments, such as seawater cooling systems in Gas and Steam Power Plants (PLTGU). This study aims to analyze the effect of cobalt and catalyst composition on the tensile strength of FRP pipe joints. The joining process used the butt and wrap joint method, with cobalt (5 ml and 10 ml) and catalyst (15 ml and 20 ml) as variables. Test specimens were prepared in dogbone shape following ASTM D638 standard and tested using tensile test. From visual observations imbalances in the mix composition, such as excessive use of cobalt or catalyst, can cause the resin to harden too quickly and cause cracks on the inside of the joint. From the tensile testing of the specimens, it was found that the highest strength value occurred at a dose of 5 ml cobalt and 15 ml catalyst with a value of 155.97 MPa, while the smallest value occurred at a dose of 10 ml cobalt and 20 ml catalyst with a value of 85.62 MPa.