Abstract
In this study, a comprehensive investigation is conducted to improve a surface film resin formulation for advanced composite applications. This surface film is designed to be co-cured with a base substrate made of carbon fiber/epoxy-based prepregs. The curing behavior of an epoxy resin formulation for a prepreg with a high glass transition temperature and a surface film formulation containing a high percentage of glass microspheres were characterized by isothermal and dynamic Differential Scanning Calorimetry, and rheometry; and the cure kinetics profiles were modeled. The effects of the curing system, glass microspheres, and accelerator on cure kinetics and rheological behavior were thoroughly investigated to assess the compatibility of these two resin systems to be used in a composite lay-up. Initial trials resulted in excessive bleeding of the surface film resin, and specific improvements have been made to accelerate the reaction so that the system co-cures without bleeding.
| Original language | English |
|---|---|
| Pages (from-to) | 14380-14390 |
| Number of pages | 11 |
| Journal | Polymer Composites |
| Volume | 46 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2025 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Keywords
- co-curing
- composites
- cure kinetics
- epoxy systems
- prepregs
- surface film