Abstract
Resin Transfer Molding (RTM) is one of the composite manufacturing technique that consists in injecting a resin pre-catalysed thermosetting in a closed mold containing a dry fiber preform, where the resin is impregnated. In this sense, the aim of this research is to study theoretically and experimentally the RTM process. Experimental and simulations of the rectilinear infiltration of polyester resin (filled and non filled with CaCO 3 ) in mold with glass fiber preform were performed in cavity with dimensions 320 · 150 · 3.6 mm. Numerical results of the filling time and fluid front position over time were assessed by comparison with experimental data and good accuracy was obtained. It was verified that, the CaCO 3 content affect resin velocity during filling, the permeability of the reinforcement and resin viscosity, thus the filling time is affected strongly.
Highlights
Composite material can be defined as a combination of two or more materials on a macroscale to form a useful material, often showing properties that none of the individual independent components shows [1]
There are a wide variety of processing methods available to produce polymer matrix composites such as hand lay up, injection molding, filament winding, Resin Transfer Molding (RTM) and its variations (RTM light, VARTM, etc.)
RTM technique consists in positioning the preform within the mold
Summary
Composite material can be defined as a combination of two or more materials on a macroscale to form a useful material, often showing properties that none of the individual independent components shows [1]. RTM technique consists in positioning the preform (i.e. porous fibrous reinforcement in the shape of the piece) within the mold. The mold, containing the preform and moist air, is closed and resin is injected into the mold cavity until the fibrous reinforcement is fully impregnated. The mold is opened and the composite is removed from the mold. This composite may still require finishing operations and/or to go through a postcuring process. The RTM mold must have at least one inlet port for resin injection and one outlet to enable, during resin injection, the output of air from inside the mold
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