| Title | Recyclable flame retardant phosphonated epoxy based thermosets enabled via a reactive approach |
|---|---|
| ID_Doc | 12373 |
| Authors | Klingler, WW; Rougier, V; Huang, ZY; Parida, D; Lehner, S; Casutt, A; Rentsch, D; Hedlund, KB; Barandun, GA; Michaud, V; Gaan, S |
| Title | Recyclable flame retardant phosphonated epoxy based thermosets enabled via a reactive approach |
| Year | 2023 |
| Published | |
| Abstract | The development of reusable fire-safe polymers with a prolonged lifetime heralds the switch for a transition towards circular economy. In this framework, we report a novel phosphonated thermoset which is composed of networked phosphonate esters containing both P-C and P-O bonds. Employing a simple one-pot, two-step synthetic methodology, oxirane groups of the epoxy resin were partially reacted with various amounts of reactive bis H-phosphonate monomer, and cured with a cycloaliphatic hardener to obtain multifunctional thermosets with up to 8% phosphorus (P) content. Though 2.5% P was adequate to achieve good flame retardancy, a concentration > 5% P was necessary for accomplishing material reprocessability and recyclability. These phosphonated thermosets exhibited high Tg (94 degrees C - 140 degrees C) and good thermal stability. Fire performance of the thermoset with 2.5% P via cone calorimetry showed effective reduction in the peak heat release rate (pHRR, 75%) and significant inhibition of total smoke production (TSP, 72.5%), which was attributed to the gas and condense phase actions of the phosphonate moieties. This thermoset was explored as a transparent fire-safe coating on wood where an intumescent flame retardant mechanism was observed. The phosphonated thermoset with higher P content (6%) demonstrated excellent damage reparability and thermomechanical reprocessability driven by transesterification induced network rearrangement. This thermoset was used for manufacturing flax fiber reinforced composite, to demonstrate its future application as a polymer matrix for composite materials. |
| https://doi.org/10.1016/j.cej.2023.143051 |
Similar Articles
| ID | Score | Article |
|---|---|---|
17790
|
Bascucci, C; Duretek, I; Lehner, S; Holzer, C; Gaan, S; Hufenus, R; Gooneie, A Investigating thermomechanical recycling of poly(ethylene terephthalate) containing phosphorus flame(2022) | |
| 10829
|
Ghomi, ER; Khosravi, F; Mossayebi, Z; Ardahaei, AS; Dehaghi, FM; Khorasani, M; Neisiany, RE; Das, O; Marani, A; Mensah, RA; Jiang, L; Xu, Q; Försth, M; Berto, F; Ramakrishna, S The Flame Retardancy of Polyethylene Composites: From Fundamental Concepts to Nanocomposites(2020)Molecules, 25, 21 | |
| 9789
|
Leng, YM; Zhao, X; Fu, T; Wang, XL; Wang, YZ Bio-Based Flame-Retardant and Smoke-Suppressing Wood PlasticComposites Enabled by Phytic Acid Tyramine Salt(2022)Acs Sustainable Chemistry & Engineering, 10.0, 15 | |
| 29471
|
Xue, YJ; Zhang, M; Feng, JB; Zhang, Y; Chevali, V; Song, F; Pan, Z; Peng, H; Zhou, YH; Song, PG Structure-fire-retardant property correlations in biodegradable polymers(2024)Applied Physics Reviews, 11.0, 3 | |
| 7190
|
Barczewski, M; Hejna, A; Andrzejewski, J; Anisko, J; Piasecki, A; Mróz, A; Ortega, Z; Rutkowska, D; Salasinska, K The Recyclability of Fire-Retarded Biobased Polyamide 11 (PA11) Composites Reinforced with Basalt Fibers (BFs): The Influence of Reprocessing on Structure, Properties, and Fire Behavior(2024)Molecules, 29, 13 | |
| 21655
|
Ben Omran, KM; Shwika, SI; Vuksanovic, MM; Marinkovic, AD; Jovanovic, A; Prlainovic, N; Vasilski, D Circular Economy Implementation In The Development Of Fire-Retardant Materials Used In Construction, Industry, And General-Purpose Products(2022)Metallurgical & Materials Engineering, 28.0, 2 | |
| 8529
|
Zhang, AL; Zhang, JZ; Liu, LA; Dai, JF; Lu, XY; Huo, SQ; Hong, M; Liu, XH; Lynch, M; Zeng, XS; Burey, P; Song, PA Engineering phosphorus-containing lignin for epoxy biocomposites with enhanced thermal stability, fire retardancy and mechanical properties(2023) |