Abstract: This paper tested viscosity of the unsaturated polyester resin (UPR) adding aluminum hydroxide (ATH) in different temperatures and the content of accelerator by digital viscosity instrument, and simulated VARTM(resin transfer molding) and RTM(vacuum assisted resin transfer molding) process using a composite part. The simulation results show that: the filling time of VARTM process is not longer than RTM process, and when the inlet is larger than the outlet, the filling time of VARTM process is almost equal to RTM process, when the inlet is smaller than the outlet, the filling time of VARTM Process is less than RTM's.

Key words: ATH, UPR, orthogonal experiment, RTM, VARTM, PAM-RTM, simulation