为分析有机硅（ Si）／可膨胀石墨（ EG）对聚丙烯／热塑性聚氨酯／（ PP／TPU）共混物性能的影响，通过差示扫描量热（DSC）、扫描电镜（SEM）、热重分析（TGA）、锥形量热仪（CONE）等表征方法对复合材料体系的结晶行为、热稳定性能、燃烧行为及残炭形貌特征进行了研究。结果表明：EG是一种有效的阻燃剂，能显著提高材料的阻燃性能；Si的存在对PP／TPU／EG复合材料有促进结晶作用，熔点增加，耐热性能得以提高，但Si的添加对复合材料体系的阻燃性能有一定的抑制作用，表明Si与EG复配在阻燃PP／TPU共混物时在阻燃效果上具有反协同效应。
To analyze the effect of organic silicone ( Si ) and expandable graphite ( EG ) on the properties of polypropylene/thermoplastic polyurethane (PP/TPU) ,the crystallization behavior, thermal stability, flammability and char morphology of the flame retardant composites were investigated by differential scanning calorimeter ( DSC ) , scanning electron microscope ( SEM ) , thermogravimetric analysis ( TGA ) and cone calorimeter test (CCT). The results indicated that EG was an efficient additive in improving the flammability of the polymer matrix. The crystallization temperature and thermal stability of PP/TPU/EG composites from DSC and TGA were improved due to the addition of Si with EG. However, the Si powder restrained the flame retardancy of the PP/TPU/EG composites, which indicated that there was an anti?synergistic effect on the flammability between the powdered Si resin modifiers and EG in the flame retardant PP/TPU composites.
参考文献
| [1] | KANNAN M, BHAGAWA SS, JOSE T, et al. Prepara-tion and characterization of nanoclay filled polyure-thane/polypropylene blends [J]. Polymer Engineering and Science, 2010, 50 (9):1878-1886.,2010. |
| [2] | LIU W F, QU J P, JIA S K, et al. Study on mechani-cal properties and phase morphology of thermoplastic polyurethane/polypropylene blends prepared with vane extruder [J]. Advanced Materials Research, 2012, 600:256-260.,2012. |
| [3] | JIAO Y H, WANG X L, WANG Y Z, et al. Thermal degradation and combustion behaviors of flame-retardant polypropylene/thermoplastic polyurethane blends [J]. Journal of Macromolecular Science, Part B:Physics, 2009, 48 (5):889-909.,2009. |
| [4] | LAI X J, ZENG X R, LI H Q, et al. Preparation and properties of flame retardant polypropylene with an intumescent system encapsulated by thermoplastic polyurethane[J]. Journal of Macromolecular Science, Part B:Physics, 2012, 51 (1):35-47.,2012. |
| [5] | CHEN X L, JIAO C M. Synergistic effects of hydroxy silicone oil on intumescent flame retardant polypropylene system[J]. Fire Safety Journal, 2009, 44 (8):1010-1014.,2009. |
| [6] | 李芬,罗运军,李晓萌,李杰.磷-氮阻燃水性聚氨酯在涤丝纺上的阻燃研究[J].材料科学与工艺,2011(04):36-40. |
| [7] | ZHANG G H, WU J S, WANG W P, et al. Character-izations of expanded graphite/polymer composites pre-pared by in situ polymerization[J]. Carbon, 2004, 42 (14):2839-2847.,2004. |
| [8] | SENGUPTA R, BHATTACHARYA M, BANDYO-PADHYAY S, et al. A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites[J]. Progress in Polymer Science, 2011, 36 (5):638-670.,2011. |
| [9] | GARDELLE B, DUQUESNE S, VANDEREECKEN P, et al. Characterization of the carbonization process of expandable graphite/silicone formulations in a simulated fire[J]. Polymer Degradation and Stability, 2013, 98 (5):1052-1063.,2013. |
| [10] | DING L P, SONG R J, LI B. An easy-to-obtain silicone-containing flame retardant and its effects on the combustion of polycarbonate [J]. Journal of Applied Polymer Science, 2012, 126 (5):1489-1496.,2012. |
| [11] | CHEN X L, YU J, GUO S Y. Structure and properties of polypropylene composites filled with magnesium hydroxide [J]. Journal of Applied Polymer Science, 2006, 102 (5):4943-4951.,2006. |
| [12] | XIE X L,LI R K Y, TJONG S C, et al. Structural properties and mechanical behavior of injection molded composites of polypropylene and sisal Fiber [J]. Polymer Composites, 2002, 23 (3), 319-328.,2002. |
| [13] | 张顺,吴宁晶,李美江.有机硅阻燃剂的研究进展[J].高分子通报,2010(12):72-77. |
| [14] | 吴宁晶,张顺,刘漫.聚丙烯/有机硅阻燃体系的热降解行为研究[C].2011年全国阻燃学术会议论文集,2011:206-209. |
| [15] | CHEN X L, YU J, QIN J, et al. Combustion behaviour and synergistic effect of zinc borate and microencapsu-lated red phosphorus with magnesium hydroxide in flame-retarded polypropylene composites[J]. Polymers& Polymer Composites, 2011, 19(6):491-496.,2011. |
| [16] | WU X F, WANG L C, WU C, et al. Flammability of EVA/IFR (APP/PER/ZB System) and EVA/IFR/Synergist (CaCO3, NG, and EG) composites [J]. Journal of Applied Polymer Science, 2012, 126(6):1917-1928.,2012. |
| [17] | 胡小平,李俊江,汪关才,卢忠远,李鸿波,杨文彬,周元林.海泡石的剥离改性及阻燃不饱和聚酯[J].材料科学与工艺,2010(04):469-473. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%