Preparation and flammability properties of intumescent flame retardant-functionalized layered double hydroxides/polymethyl methacrylate nanocomposites

被引：26
作者：
Huang, Guobo [1 ]
Zhuo, Anan [2 ]
Wang, Liqiang [3 ]
Wang, Xu [4 ]
机构：
[1] Taizhou Univ, Sch Pharmaceut & Chem Engn, Linhai 317000, Peoples R China
[2] Zhejiang Univ Sci & Technol, Dept Biol & Chem Engn, Hangzhou 310023, Zhejiang, Peoples R China
[3] E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China
[4] Zhejiang Univ Technol, Coll Chem Engn & Mat, Hangzhou 310014, Zhejiang, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 130卷 / 1-2期
关键词：
Composite materials; Nanostructures; Polymers; Thermo-mechanical analysis; DOUBLE HYDROXIDE; SOLUTION INTERCALATION; STRUCTURAL-CHARACTERIZATION; THERMAL-PROPERTIES; MECHANICAL-PROPERTIES; CLAY NANOCOMPOSITES; EXFOLIATION; MELT; LDH; MONTMORILLONITE;
D O I：
10.1016/j.matchemphys.2011.07.047
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A phosphorus-nitrogen containing compound, N-(2-(5,5-dimethyl-1,3,2-dioxaphosphinyl-2-ylamino)-N-hexylformamide-2-propenyl acid (DPHPA), was synthesized and characterized. A novel flame retardant, namely DPHPA modified layered double hydroxides (DPHPA-LDHs), was prepared by ion-exchange of LDHs with DPHPA. The results from FT-IR. XPS, XRD and TEM showed that DPHPA intercalated LDHs and PMMA-DPHPA-LDHs nanocomposites had been prepared by in situ polymerization of PMMA with flame retardant DPHPA-LDHs. The storage modulus (E') and glass transition temperature (T-g) of the nanocomposites were enhanced by incorporating DPHPA-LDHs into the PMMA. The results of flammability showed that the addition of flame retardant DPHPA-LDHs enhanced the flame retardancy of PMMA significantly. Compared to pure PMMA, the PHRR of the nanocomposites filled with 5 wt% DPHPA-LDHs is reduced by about 35%. The results of SEM and TEM showed that a compact and dense intumescent char is formed for PMMA-DPHPA-LDHs nanocomposites after combustion. The functionalization of LDHs by intumescent flame retardant DPHPA can improve both the dispersion of LDHs in the polymer matrix and flame retardancy of the nanocomposites. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：714 / 720
页数：7
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