Abstract
Two kinds of novel phosphorus-containing polyether toughening agents were synthesized and characterized by 1H nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectra (FTIR). Afterwards, a series of phenolic foams with different loadings of phosphorus-containing toughening agents were prepared. The apparent density and scanning electron microscopy (SEM) results showed that the addition of 5 wt% toughening agents increased the expansion ratio and promoted the formation of uniform cells. The limiting oxygen index (LOI) values of modified phenolic foams decreased with the increase of modifier content, but it still remained at 40% even if the amount of modifier loadings was 10 wt%. UL-94 results showed all samples can pass V0 rating, indicating the modified foams still have great flame retardance. Microscale combustion calorimetry (MCC) results indicated that the peak heat release rate (PHRR) and total heat release (THR) of the modified foams were reduced by 42% and 35%, respectively, compared to the pure phenolic foams. Moreover, the thermal stability of samples was investigated by thermogravimetric analysis (TGA). The mechanical properties were evaluated and correlated with composition and structural features.
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References
Sarier N, Onder E (2008) Thermochim Acta 475:15–21
Ozkan DB, Onan C (2011) Appl Energ 88:1331–1342
Ji GQ, Wang JP (2010) Proceedings of the 7th International Conference on Tall Buildings 331–340.
Stec AA, Hull TR (2011) Energ Buildings 43:498–506
Guo QG, Lei SW, Zhang DQ, Shi JL, Liu L, Wei XH (2010) J Appl Polym Sci 117:3545–3550
Shen HB, Lavoie AJ, Nutt SR (2003) Compos Part a-Appl S 34:941–948
Shen HB, Nutt S (2003) Compos Part a-Appl S 34:899–906
Lei SW, Guo QG, Zhang DQ, Shi JL, Liu L, Wei XH (2010) J Appl Polym Sci 117:3545–3550
Rangari VK, Hassan TA, Zhou YX, Mahfuz H, Jeelani S, Prorok BC (2007) J Appl Polym Sci 103:308–314
Auad ML, Zhao LH, Shen HB, Nutt SR, Sorathia U (2007) J Appl Polym Sci 104:1399–1407
Choi MH, Byun HY, Chung IJ (2002) Polymer 43:4437–4444
Li T, Zhang L, Jiang HM, Chen JZ, Li XF (2010) Thirteenth national conference on packaging engineering. Tncpe 13:137–141
Wang FY, Ma CCM, Wu WJ (2001) J Appl Polym Sci 80:188–196
Liu YY, Wang SJ, Xiao M, Meng YZ (2007) Res J Chem Environ 11:84–103
Wang LC, Jiang JQ, Jiang PK, Yu JH (2010) J Polym Res 17:891–902
Wu K, Song L, Wang ZZ, Hu Y (2009) J Polym Res 16:283–294
Wang X, Hu Y, Song L, Xing WY, Lu HD, Lv P, Jie GX (2010) Polymer 51:2435–2445
Nutt SR, Shen HB (2005) U.S.Patent 6,841,584.
Orpin M (2010) U.S. Patent 7,718,751.
Braun U, Balabanovich AI, Schartel B (2006) Polymer 47:8495–508
Wu K, Hu Y, Song L, Lu HD, Wang ZZ (2009) Ind Eng Chem Res 48:3150–7
Wu K, Song L, Hu Y, Lu HD, Kandola BK, Kandare E (2009) Prog Org Coat 65:490–7
Acknowledgment
The work was financially supported by National Basic Research Program of China (973 Program) (2012CB719701), the joint fund of National Natrual Science Foundation of China (NSFC) and Civil Aviation Administration of China (CAAC) (No. 61079015) and the Program for Specialized Research Fund for the Doctoral Program of Higher Education (201003402110006).
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Yang, H., Wang, X., Yuan, H. et al. Fire performance and mechanical properties of phenolic foams modified by phosphorus-containing polyethers. J Polym Res 19, 9831 (2012). https://doi.org/10.1007/s10965-012-9831-7
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DOI: https://doi.org/10.1007/s10965-012-9831-7