阻燃剂
材料科学
生物复合材料
复合材料
三聚氰胺
透射率
锥形量热计
热固性聚合物
固化(化学)
三聚氰胺树脂
热解
化学工程
复合数
涂层
烧焦
工程类
光电子学
作者
Pratick Samanta,Archana Samanta,Céline Montanari,Yuanyuan Li,Lorenza Maddalena,Federico Carosio,Lars A. Berglund
标识
DOI:10.1016/j.compositesa.2022.106863
摘要
Transparent wood (TW) biocomposites combine high optical transmittance and good mechanical properties and can contribute to sustainable development. The safety against fire is important for building applications. Here, a "green" bleached wood reinforcement is impregnated by water soluble and flame-retardant melamine formaldehyde (MF) in a scalable process, for a wood content of 25 vol%. FE-SEM is used for characterization of optical defects and EDX to examine MF distribution at nanoscale cell wall pore space. Curing (FTIR-ATR), mechanical properties, optical transmittance (74% at 1.2 mm thickness) and flame-retardant properties are also characterized (self-extinguishing behavior and cone calorimetry), and scattering mechanisms are discussed. The fire growth rate of transparent wood was less than half the values for neat wood. Transparent wood/MF biocomposites show interesting wood-MF synergies and are of practical interest in building applications. Critical aspects of processing are analyzed for minimization of optical defects.
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