采用水解缩合法制备了三官能结构的聚硅氧烷阻燃剂.采用氧指数仪、锥形量热仪、TGA、热裂解-气相色谱/质谱(PY-GC/MS)和SEM研究了Karstedt催化剂(KC)对聚硅氧烷/聚碳酸酯(PC)复合材料热性能和阻燃性能的影响,并研究了该复合体系的阻燃机制.结果表明:在热裂解过程中KC促进了含乙烯基聚硅氧烷的交联,增强了聚硅氧烷/PC复合材料的耐热性能;KC抑制了聚硅氧烷/PC复合材料在燃烧过程的热释放,使材料的烟、CO、CO2产生过程延后,且峰值降低,提高了聚硅氧烷/PC的阻燃性能,降低了材料燃烧的危害性.但KC对聚硅氧烷/PC复合材料的极限氧指数(LOI)的影响较复杂,其LOI不仅取决于残炭量,还与燃烧炭层结构有关,在保持一定残炭量下,若KC使聚硅氧烷/PC的燃烧炭层更致密、均匀,则材料的LOI提高.
参考文献
| [1] | 王静,朱立群,李卫平,等.有机硅微胶囊-有机硅树脂复合涂层对空间Kapton的原子氧防护[J].复合材料学报,2009,26(4):36-40.Wang Jing,Zhu Liqun,Li Weiping,et al.Atomic oxygen erosion resistance of microcapsules-silicone coatings on Kapton[J].Acta Materiae Compositae Sinica,2009,26(4):36-40. |
| [2] | Hshieh F Y.Shielding effects of silica-ash layer on the combustion of silicones and their possible applications on the fire retardancy of organic polymers[J].Fire and Materials,1998,22(2):69-76. |
| [3] | 罗春晖,瞿金清,陈焕饮.助溶剂驱使溶胶-凝胶化SiO2/聚丙烯酸酯复合涂层[J].复合材料学报,2010,27(3):29-35.Luo Chunhui,Qu Jinqing,Chen Huanqin.Co-solvents induced sol-gel derived SiO2/polyacrylate composite films[J].Acta Materiae Compositae Sinica,2010,27(3):29-35. |
| [4] | Iii M,Serizawa S.Silicone derivatives as new flame retardants for aromatic thermoplastics used in electronic devices[J].Polymers for Advanced Technologies,1998,9(10):593-600. |
| [5] | 陈科,周文君,宋健.聚硅氧烷微粉阻燃剂的制备与应用[J].中国塑料,2009,23(8):87-90.Chen Ke,Zhou Wenjun,Song Jian.Preparation and application of polysiloxane flame retardant[J].China Plastics,2009,23(8):87-90. |
| [6] | Zhong H,Wei P,Jiang P,et al.Thermal degradation behaviors and flame retardancy of PC/ABS with novel siliconcontaining flame retardant[J].Fire and Materials,2007,31(6):411-423. |
| [7] | Zanetti M,Camino G,Canavese D,et al.Fire retardant halogen-antimony clay synergism in polypropylene layered silicate nanocomposites[J].Chemistry of Material,2002,14(1):189-193. |
| [8] | Marosi G,Marton A,Anna P,et al.Ceramic precursor in flame retardant systems[J].Polymer Degradation and Stability,2002,77(2):259-265. |
| [9] | Miebach T,Campbell J R,Marugan M M,et al.Flame retardant resinous compositions and method of making the same:WO Patent,03042305A1[P].2003-05-22. |
| [10] | 钟明强,宋栩冰.有机硅复合阻燃剂阻燃聚丙烯的研究[J].塑料工业,1991(3):46-49.Zhong Mingqiang,Song Xubing.On the flame-retardant PP by silicone composite system[J].China Plastics Industry,1991(3):46-49. |
| [11] | 赫丽华,刘平桂,宋江选.聚硅氧烷/聚己内酯/环氧树脂复合体系的制备及表面性能[J].复合材料学报,2009,26(3):60-66.He Lihua,Liu Pinggui,Song Jiangxuan.Preparation and surface properties of polydimethysiloxane/polycaprolactone/epoxy resin composites[J].Acta Materiae Compositae Sinica,2009,26(3):60-66. |
| [12] | Nobel M G,Brower J R.Flame retardant compositions:US Patent,3514424[P].1970-05-26. |
| [13] | Hayashida K,Ohtani H,Tsuge S,et al.Flame retarding mechanism of polycarbonate containing trifunctional phenylsilicone additive studied by analytical pyrolysis techniques[J].Polymer Bulletin,2002,48(6):483-490. |
| [14] | Hayashida K,Tsuge S,Ohtani H.Flame retardant mechanism of polydimethylsiloxane material containing platinum compound studied by analytical pyrolysis techniques and alkaline hydrolysis gas chromatography[J].Polymer,2003,44(19):5611-5616. |
| [15] | Karstedt B D,Scotia N Y.Platinum complexes of unsaturated siloxanes and platinum containing organopolysiloxanes:US Patent,3775452A[P].1973-11-27. |
| [16] | 周文君,杨辉.甲基苯基硅树脂的制备工艺优化及阻燃性能[J].化工学报,2006,57(9):2218-2222.Zhou Wenjun,Yang Hui.Synthesis optimization of silicone with methyl and phenyl and its flame-retardancy[J].Journal of Chemical Industry and Engineering,2006,57 (9):2218-2222. |
| [17] | Deshpande G,Rezac M E.The effect of phenyl content on the degradation of poly(dimethyldiphenyl) siloxane copolymers[J].Polymer Degradation and Stability,2001,74(2):363-370. |
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