期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 27, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201703289
关键词
flammability; halloysite; layer-by-layer assembly; polyurethane foams; smoke release
类别
资金
- Ministry of Education and Science of the Russian Federation [14.Z50.31.0035]
In an effort to develop a more environmentally benign flame retardant for polyurethane foam (PUF), layers of halloysite clay nanotubes (HNT) stabilized by branched polyethylenimine (BPEI) or poly(acrylic acid) (PAA) are deposited from aqueous suspensions to create multilayered nanocomposite coatings. PUF is very flammable and widely used in upholstered furniture throughout the world. Foam treated with five BPEI-HNT/PAA-HNT bilayers, deposited using layer-by-layer assembly, is rendered self-extinguishing in open flame testing. Cone calorimetry reveals that this coating reduces the peak heat release rate (pkHRR) by 62%. Due to the tubular morphology of HNT, small volatile gasses given off during combustion are trapped, so total smoke release (TSR) is reduced by 60%. Infrared spectroscopy suggests this multilayer film survives during combustion, forming an HNT-rich barrier that prevents mass and energy transfer during open flame testing and calorimetry. The significant reductions in pkHRR and TSR, along with the self-extinguishing behavior, indicate that these halloysite-based multilayer films have the potential to greatly improve PUF fire safety. The low cost and natural abundance of HNT makes this technology especially amenable to widespread use.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据