期刊
PROGRESS IN ORGANIC COATINGS
卷 135, 期 -, 页码 123-134出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2019.05.043
关键词
Polyethylene glycol borate; Transparent fire-retardant coatings; Flame retardancy; Smoke suppression; Thermal stability
资金
- National Natural Science Foundation of China [51676210]
- Hunan Provincial Natural Science Foundation of China [2018JJ3668]
- National Key R&D Program of China [2017YFB1201204]
A series of novel phosphorus and boron-containing flame retardants (PPEAs) were synthesized via the esterification of cyclic phosphate ester (PEA) and polyethylene glycol borate (PEG-BA) with different mass ratio, and then well characterized by Fourier transform infrared (FTIR) spectroscopy and H-1 nuclear magnetic resonance (H-1 NMR) spectroscopy. The obtained PEA and PPEAs were applied in amino resin to produce transparent fire-retardant coatings applied on wood substrates. The results of transparency analysis and fire protection tests show that the fire-retardant coatings containing PEG-BA exhibit a high degree of transparency even at a high PEG-BA content and supply excellent fire protection for the wood substrates simultaneously. Cone calorimeter and smoke density tests show that the introduction of PEG-BA exerts excellent synergistic effect on reducing the heat release and smoke production of the coatings, and an excessive content of PEG-BA will diminish this synergistic effect. Especially, when the mass ratio of PEA/PEG-BA is 80:20, the obtained MPPE3 coating exhibits 51.5% reduction in peak heat release rate, 48.1% reduction in total heat release and 59.7% reduction in smoke density rating compared to those of the MPPEO without PEG-BA. Thermo-gravimetric (TG) analysis shows that the introduction of PEG-BA improves the residual weight and high-temperature stability of the coatings. In addition, the same addition of PEG-BA exerts better synergistic effects on the fire performance and char formation of the fire-retardant coating than those of polyethylene glycol (PEG). The superior flame retardancy and smoke suppression properties of the coatings containing PEG-BA can be ascribed to the formation of more phosphorus and boron-containing crosslinking structures and aromatic structures in the condensed phase that produce a more thermally stable, compact and intumescent char against fire during burning.
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