Influence of nano-LDHs on char formation and fire-resistant properties of flame-retardant coating

被引：235

作者：

Wang, ZY ^{[1
]}

Han, EH ^{[1
]}

Ke, W ^{[1
]}

机构：

[1] Chinese Acad Sci, Met Res Inst, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

PROGRESS IN ORGANIC COATINGS | 2005年 / 53卷 / 01期

关键词：

APP/PER/EN coating; Char formation; intumescent flame-retardant coating; nano-size magnesium aluminum-layered double hydroxides (nano-LDHs); flame-retardant nano-concentrates;

D O I：

10.1016/j.porgcoat.2005.01.004

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Flame-retardant nano-coatings were prepared by adding flame-retardant nano-concentrates to APP/PER/EN coating. Dispersion morphology and stability principle of nano-size magnesium aluminum-layered double hydroxides (nano-LDHs) have been studied by using transmission electron microscopy (TEM). Relation of added amount of nano-concentrates in flame-retardant coating to flame-retardant properties for APP/PER/EN system has been studied by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), differential thermal analysis (DTA), thermogravimetry (IG) and fire protection test. It was indicated that nano-LDHs could catalyze the esterification reaction between ammonium polyphosphate and pentaerythritol, and IPN network formed by nano-size thermal-decomposed products of LDH could efficiently enhance char formation and structure of char layer. Only specific content (1.5%) of nano-LDHs in flame-retardant coating could efficiently improve its char layer structure and fire-resistant properties. Nano-LDHs (1.5%) greatly improve mechanical properties (bonding strength, bending resistance and resistance to freeze-thaw cycle) of flame-retardant coating. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：29 / 37

页数：9

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