화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.21, No.1, 27-34, January, 2013
DOI10.1007/s13233-012-0185-0  Export Citation
Nanoclay, intumescent flame retardants, and their combination with chemical modification for the improvement of the flame retardant properties of polymer nanocomposites
Guobo Huang, Jianguo Yang, Xu Wang1, and Jianrong Gao1, †
  • School of Pharmaceutical and Chemical Engineering, Taizhou University, Linhai, 317000, P. R. China
  • 1State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
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The flame retardancy of nanoclay, intumescent flame retardants (IFRs), and their combination with chemical modification is investigated in poly(methyl methacrylate) (PMMA) nanocomposites. 2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]-undecane-3,9-dioxide-disubstitutio-acetamide-N,N,N-triethyl-ammonium bromide (PDEABMMT) and 2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]-undecane-3,9-dioxide-disubstitutio-acetamide-N,N-dimethyl-N-hexadecyl-ammonium bromide (PDHAB-MMT) are prepared by ion exchange of sodium montmorillonite with phosphorus-nitrogen containing quarternary ammonium salts including PDEAB and PDHAB. The X-ray diffraction (XRD) and transmission electron microscopy (TEM) results show that PDHAB-MMT achieves tood dispersion in the PMMA matrix and the corresponding nanocomposites PMMA/PDHAB-MMT are formed. The incorporation of PDHAB-MMT into the PMMA matrix obviously improves the nanocomposite thermal properties. Cone calorimeter experiments indicate that the flame retardancy of nanoclay, IFRs, and their combination with chemical modification showed a 5%, 5%, and 9% reduction in the peak heat release rates of PMMA, respectively. The scanning electron microscopy and TEM images confirm that a compact and dense char is formed for PMMA/PDHAB-MMT nanocomposites after combustion.
Keywords:nanocomposites;clay;intumescent flame retardant;poly(methyl methacrylate)
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