Abstract
Coinjection resin transfer molding (CIRTM) requires an impermeable barrier layer to prevent undesired mixing of resins injected into the mold. This study involves in situ formation of this barrier layer using a thermoplastic polyester powder binder attached to a fabric during the preforming stage. The powder binder is sprinkled onto the glass fabric and melted by use of heat and pressure, to form the separation layer. A number of factors such as preforming temperature, pressure and time that govern the spread of individual binder particles into a film and the subsequent impregnation into the fabric are evaluated. Lateral spread of particles on nonporous substrate is studied and verified. A series of models are used to predict the impregnation of the binder melt into the fabric at the given preforming conditions. The optimized preforming conditions for impermeable film formation were determined for a biaxial weave fabric. Coinjected laminates using the in situ barrier layer were manufactured and their performance was shown to be comparable to conventional CIRTM laminates using the short beam shear test.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
