| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Engineering -- From Ideas to Practice: An EPD Symposium in Honor of Jiann-Yang Hwang
|
| Presentation Title |
Influence of Weathering on the Mechanical Performance of an Aramid Fabric |
| Author(s) |
Anderson Oliveira da Silva, Ricardo Weber, Rodrigo Nascimento, Sergio Neves Monteiro |
| On-Site Speaker (Planned) |
Sergio Neves Monteiro |
| Abstract Scope |
The influence of weathering simulation on the mechanical performance of an aramid fabric was investigated by standard exposure related to degradation conditions of (i) ultraviolet radiation (UV); (ii) moisten by washing (MW) and (iii) UV+MW. Analysis of Fourier Transform Infrared (FTIR) and X-ray Diffraction (XRD) characterized the modifications that occurred in the physical-chemicals properties of the aramid fabric. The aramid fabric was evaluated by tensile test conventional. FTIR and XRD analyses revealed that photolysis produces scission of the polyaramid macromolecular chains on the most ordered surface of the fiber (fiber cover), while hydrolysis modifies the orientation and size of the crystals in the amorphous region inside the aramid fiber (fiber core), generating an increase in defects. The results show with the tensile strength of the aramid fabric decreased for all evaluation groups, UV, MW, and UV+MW (4.92, 2.45, 2.63 N/tex) respectively when compared to non-irradiated sample (6.1 N/tex). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Polymers, Environmental Effects, Characterization |