PENGARUH HIBRID RESIN DENGAN VARIASI SUSUNAN MAT DAN WOVEN ROVING TERHADAP KETAHANAN KOROSI PADA FLUIDA ASAM PHOSPAT DAN KEKUATAN TARIK
Abstract - In chemical plants, corrosion problems often occur due to fluid acidity. Such as the installation of a phosphoric acid plant in one of the Manyar Roomo Gresik area factories which has a fairly high acidity level. To overcome this, the plant installation uses materials such as Fiberglass Reinforced Plastics which are strong and resistant to corrosion. The material is made from a layer of woven roving and mat laminated using resin, catalysts and other additives. In this final project, we will examine Fiberglass Reinforced Plastics material with a variety of hybrid compositions from 411-157 BQTN EX and Mat and WR arrangements. In this test there is a test of Immersion test and Tensile test to determine the corrosion resistance and material strength. Tests on materials were carried out using 36 specimen samples consisting of 3 types of resin hybrid compositions and 3 types of Mat and WR arrangements. The tensile test process refers to ASTM D-638 "Standard Test Method for Tensile Properties of Plastics" while the Immersion Test refers to ASTM-G31. From the above research the highest corrosion rate and the lowest tensile strength value of FRP hybrid resin specimens (50% DERAKANE 411 50% 157 BQTN EX) with layer 1 variations (w, m, m, w, m, m, m, w) ) which is 0.01641 mm / year and 123.95 MPa. It can be concluded that specimens that have the greatest tensile strength and are corrosion resistant to phosphoric acid fluids with pH1 and temperature70 ° are specimens that have a high percentage of DERAKANE 411 resin and a large amount of woven roving on the layer arrangement.