About this Abstract |
Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Presentation Title |
Elemental Sulfur Assisted Interface Functionalization of Woven Carbon Fiber PEEK Composites |
Author(s) |
Emile Motta de Castro, Amir Asadi |
On-Site Speaker (Planned) |
Emile Motta de Castro |
Abstract Scope |
Achieving direct improvements the interface load transfer behavior of Carbon Fiber (CF) – PEEK composites is challenging as their high thermal and chemical stability complicates developing scalable chemical functionalization methodologies. The process is further complicated by the high processing temperature (>360°C) required to process the composite. In this work, we have developed a simple approach to increase interface interactions, and improve the interlaminar strength, by in-situ functionalizing the composite during consolidation with a controlled addition of elemental sulfur. Elemental sulfur was dissolved in toluene and subsequently spray coated (0.05% wt of composite) onto a porous CF-PEEK fabric then consolidated into a panel via compression molding. Using Differential Scanning Calorimetry and Fourier Transform Infrared Spectroscopy, we confirmed that at elevated temperatures above 265°C, elemental sulfur reacts with PEEK and CF to diminish oxygen containing functional groups. This indicates that chain scission within PEEK, and surface reduction of CFs are the driving mechanisms behind initiating new interface interactions and improving the load transfer capabilities using elemental sulfur. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |