The effect of processing conditions on the quality of fast cured out of autoclave composites will be explored in this session. As adoption in other industries such as automotive increases, the need for faster methods of production of high quality parts is required. While prepregs have not been considered a feasible option for fast cure, advances in resin formulation and prepreg format have allowed for prepregs that can be cured quickly. At shorter time scales, different factors will affect the part quality.
The prepregs employed in this study employed a vinyl hybrid along with a USCpreg format. Novel models for the unique kinetics and rheological behavior of this resin were developed. The through thickness air evacuation of USCpreg is modeled. These models were then jointly simulated and test conditions isolating various process characteristics were created. Panels were fabricated under these test conditions to assess their effect on laminate quality and performance. The importance of different factors during cure such as resin flow, air evacuation and resin cure were then assessed based on the models and produced panels.
- Understand the effects of processing characteristics on fast cure composites
- Understand the kinetics and rheological behavior of a novel class of resins with unique characteristics
- Understand the behavior of through thickness permeability in prepreg composites
Why Is This Important?
As composites are increasingly being employed, methods of faster production are becoming more important. Prepregs traditionally have taken hours to make a single part and employ expensive equipment such as autoclaves to ensure quality. Innovation in resin development and out of autoclave format has allowed for prepregs with the ability to cure quickly outside of an autoclave. Understanding the factors that affect the quality of fast cured prepregs is essential for the faster production demanded.