| Title |
Decomposition Kinetics and Lifetime Estimation of Thermoplastic Composite Materials Reinforced with rCFRP |
| ID_Doc |
14331 |
| Authors |
Abenojar, J; Aparicio, GM; Butenegro, JA; Bahrami, M; Martínez, MA |
| Title |
Decomposition Kinetics and Lifetime Estimation of Thermoplastic Composite Materials Reinforced with rCFRP |
| Year |
2024 |
| Published |
Materials, 17, 9 |
| DOI |
10.3390/ma17092054 |
| Abstract |
Because of the high demand for carbon fiber reinforced polymer (CFRP) materials across all industries, the reuse and/or recycling of these materials (rCFRP) is necessary in order to meet the principles of the circular economy, including recycling and reuse. The objective of this study is to estimate the lifespan of thermoplastic matrix composite materials reinforced with waste materials (CFRP), which undergo only a mechanical cutting process. This estimation is carried out through the thermal decomposition of polymers, including polymer matrix composite materials, which is a complex process due to the numerous reactions involved. Some authors calculate these kinetic parameters using thermogravimetric analysis (TGA) as it is a quick method, and it allows the identification of gases released during decomposition, provided that the equipment is prepared for it. This study includes a comparison between polyamides 11 and 12, as well as between polyamide composite materials with carbon fiber (CF) and polyamides reinforced with CF/epoxy composite material. The latter is treated with plasma to improve adhesion with polyamides. The behavior of weight as a function of temperature was studied at speeds of 3, 6, 10, 13, 17, and 20 degrees C/min, finding stability of the polyamides up to a temperature of 400 degrees C, which was consistent with the analysis by mass spectroscopy, where gas evolution is evident after 400 degrees C. The estimation of the lifespan was carried out using two different methods including the Toop equation and the free kinetics model (MFK). The energy of the decomposition process was determined using the MFK model, which establishes the energy as a function of the degree of conversion. It is estimated that at 5% decomposition, mechanical properties are lost. |
| Author Keywords |
lifetime; decomposition; thermoplastic resin; polyamide 11; polyamide 12; reuse of carbon fiber composites |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001219848600001 |
| WoS Category |
Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter |
| Research Area |
Chemistry; Materials Science; Metallurgy & Metallurgical Engineering; Physics |
| PDF |
https://doi.org/10.3390/ma17092054
|