A MIDDLE TEMPERATURE CURING EPOXY MATRIX USED IN PRESSURE VESSEL FOR REVERSE OSMOSIS

摘要

A middle-temperature curing epoxy resin, aimed to be matrix of pressure vessel with filamentrnwet-winding for reverse osmosis, was developed using a new type curing agent in the formulation.rnThe examinations of viscosity, curing behavior and mechanical properties of epoxy resin and itsrncomposites indicate that the epoxy possesses low viscosity and long pot life at room temperature,rngood mechanical properties, and can gel and cure over 80℃. Furthermore, the strengthrnconversion ratio of the glass fiber reaches 82.8%, and fatigue resistance is 150,000 times withoutrndamages. In addition, content of water is less than 0.95% when dipped in water after 360 days. So,rnthe experimental results prove that the middle-temperature curing epoxy system is very suitablernfor filament wet-winding of pressure vessel for reverse osmosis.