The Processing Characteristics and Mechanical Properties of Semi-Prepreg RTM Composites
A novel semi-prepreg resin transfer molding (RTM) process was developed to address difficulties associated with RTM process and to improve the mechanical properties of the resulting composites. Unidirectional semi-prepregs exhibiting relatively good overlay characteristics were prepared via prepolymerization of bismaleimide resin followed by wet winding. The processing characteristics and mechanical properties of composites fabricated via semi-prepreg RTM technology were compared with those of composites produced using a normal-prepreg compression molding process. Experimental results showed that the laminates fabricated by the semi-prepreg RTM process were of better internal quality and had superior mechanical properties as compared with laminates fabricated by the normal-prepreg compression molding process.
W. D. Li et al., "The Processing Characteristics and Mechanical Properties of Semi-Prepreg RTM Composites", Advanced Materials Research, Vol. 721, pp. 153-158, 2013