Title :

Universal circulating impregnation method for the fabrication of durable flame-retardant plywood with low hygroscopicity and leaching resistance

Author(s) :

Lu, Jinhan [Auteur]
Chinese Academy of Forestry
Huang, Yuxiang [Auteur]
Chinese Academy of Forestry
Jiang, Peng [Auteur]
Chinese Academy of Forestry
Chen, Zhilin [Auteur]
Chinese Academy of Forestry
Bourbigot, Serge [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Fontaine, Gaelle [Auteur]
174496|||Unité Matériaux et Transformations - UMR 8207 [UMET]
300369|||Ecole Nationale Supérieure de Chimie de Lille [ENSCL]
1002334|||Unité Matériaux et Transformations - UMR 8207 [UMET]
Chang, Liang [Auteur]
Chinese Academy of Forestry
Zhang, Longfei [Auteur]
Chinese Academy of Forestry
Pan, Fangya [Auteur]
Chinese Academy of Forestry

Journal title :

Polymer Degradation and Stability

Abbreviated title :

Polymer Degradation and Stability

Volume number :

195

Pages :

109799

Publisher :

Elsevier BV

Publication date :

2022-01

ISSN :

0141-3910

English keyword(s) :

Durable
Wood structure
Ignition time
Graphitization
Phospho-carbonaceous structure

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

The low hygroscopic resistance of flame-retardant plywood prepared by impregnation decreases its durable flame retardancy and antifungal properties. In this study, we employed the circulating impregnation technology of ...
Show more >The low hygroscopic resistance of flame-retardant plywood prepared by impregnation decreases its durable flame retardancy and antifungal properties. In this study, we employed the circulating impregnation technology of veneer using 2 wt% melamine (MEL) solution, 15 wt% amino trimethylene phosphonic acid (AP) solution, and 2 wt% MEL solution again to prepare durable flame-retardant plywood via in situ synthesis of water-insoluble MEL amino trimethyl phosphate (MEL-AP) in wood structures. The presence of 11.2 wt% MEL-AP in plywood (MAM-PW) resulted in a V-0 rating in vertical burning (UL-94), a high limiting oxygen index of 36.2%, and a significant reduction in the peak-heat-release-rate (−35.7%) with a significantly longer ignition time compared with that of bare plywood. In addition, MAM-PW exhibited a lower moisture content (21%) and higher leaching resistance value (57%) than commercial flame-retardant-plywood (38% and 3%, respectively) after 7 days of testing. The MEL-AP deposits in wood micropores decomposed to polyphosphoric acids to facilitate the charring of wood under heat, leading to a smooth and bubble-shaped phospho-carbonaceous structure in the condensed phase. Simultaneously, inert gasses were released to dilute the flammable volatiles accompanied by wood decomposition in the gas phase. These results strongly suggest that circulating impregnation has great potential as a sustainable and efficient strategy to prepare fire-proofing plywood with excellent hygroscopic and leaching resistance.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2022-03-09T13:04:24Z
2022-03-10T09:01:47Z