Abstract:
Based on the phenomenological kinetic model, DiBenedetto equation, gelation model, the isothermal and non-isothermal curing kinetic of homemade rapid curing epoxy resin was studied, and the time-temperature-transfer (TTT) diagram was established. The resin system shows both longer open time and shorter cure time, as shown in TTT diagram, which serves as a guidance for rapid resin transfer molding(RTM) process design. The flow and impregnation of resin system into carbon fiber fabric was monitored, and the interfacial mechanical properties and microstructure of rapid prototyping carbon fiber/epoxy resin composites were also evaluated. The wettability of resin system at the injection temperature is good, and the mechanical properties and internal quality of carbon fiber/epoxy resin composites from rapid RTM process are acceptable.