将聚硼硅氧烷（PB）阻燃剂分别与三种有机磷酸酯（OPP）阻燃剂进行复配，并将此复合阻燃剂添加到聚碳酸酯（Pc）中制备了阻燃PC材料（FR-PC）。采用极限氧指数（LOI）和锥形量热分析研究了PB对OPP／PC体系的协同阻燃作用。结果表明：阻燃剂总质量分数为5oA时，添加质量分数1．25％以上的PB可以提高OPP／PC体系的LOI；PB阻燃剂具有促进成炭的作用，可使OPP／PC复合体系在燃烧过程中释放的烟、热以及CO有不同程度的降低，燃烧过程趋于平缓，尤其使体系的烟释放量显著降低，三种OPP／PC阻燃体系的总烟释放量下降31．8％-51．0％，大大降低了火灾的危害性；添加适量PB能够提高OPP／PC体系的拉伸强度、弯曲强度及维卡软化点温度，并且使PC复合阻燃材料的透光率有所提高，保持了PC良好的透明性。
The flame-retardant polycarbonates （PC） were prepared by mixing the PC with different compounded flame retardants which were obtained by separately mixing the polyborosiloxane （PB） with three types of organophosphate （OPP）. The synergistic effect of PB on OPP/PC system was evaluated using limited oxygen index （LOI） and cone calorimeter analysis. The results show that, at 5 % mass fraction of total flame retardant addition, the compounded flame retardant with above 1.25% mass fraction of PB can improve the LOI of the PB - OPP/PC system. PB flame retardant promotes the char formation during the combustion of the PB- OPP/PC, which reduces the emission of the smoke, heat and CO. The total smoke release decreases by 31.8% to 51.0% when each of the three compounded flame retardants is added into PC. The combustion process is moderated and the hazard of fire is reduced. It is also found that the moderate addition of PB improves the tensile strength, flexural strength, vicat temperature and the transparency of PB - OPP/PC .
参考文献
| [1] | 黄国波,高建荣,贾建洪,等.有机磷氮系-蒙脱土/LDPE纳米复合材料的制备及阻燃性能[J].复合材料学报,2010,27(6):45-52. |
| [2] | Iji M, Serizawa S. Silicone derivatives as new flame retardants for aromatic thermoplastics used in electronic devices [J]. Polymers for Advanced Technologies, 1998, 9(10/11) : 593-600. |
| [3] | 贾修伟,刘治国.硅系阻燃剂研究进展[J].化工进展,2003,22(8):818-822. |
| [4] | Levchik S V, Weil E D. Overview of recent developments in the flame retardancy of polycarbonates [ J ]. Polymer International, 2005, 54(7): 981-998. |
| [5] | 高钧驰,杨荣杰.POSS/EPDM无机-有机杂化材料[J].复合材料学报,2011,28(1):68-71. |
| [6] | Lee K, Kim J, Bae J, et al. Studies on the thermal stabilization enhancement of ABS. Synergistic effect by triphenyl phosphate and epoxy resin mixtures [J]. Polymer,2002, 43(8): 2249-2253 |
| [7] | Xiao J F, Hu Y, Yang L, et al. Fire retardant synergism between melamine and triphenyl phosphate in poly (butylene terephthalate) [J]. Polymer Degradation and Stability, 2006, 91(9) : 2093-2100. |
| [8] | Feng J, Hao J W, Du J X, et al. Flame retardancy and thermal properties of solid bisphenol A bis(diphenyl phosphate) combined with montmorillonite in polyearbonate [J]. Polymer Degradation and Stability, 2010, 95(10):2041-2048. |
| [9] | Zhong H F, Wei P, Jiang P K, et al. Thermal degradation behaviors and flame retardaney of PC/ABS with novel silicon- containing flame retardant [J]. Fire and Materials, 2007, 31 (6) : 411-423. |
| [10] | Zhong H F, Wu D, Wei P, et aI. Synthesis, characteristic of a novel additive-type flame retardant containing silicon and its application in PC/ABS alloy [J]. Journal of Materials Science, 2007, 42(24) : 10106-10112. |
| [11] | 宋健,周文君,吕群,等.聚硼硅氧烷阻燃PC/ABS合金的制备与其阻燃性能[J].中国塑料,2010,24(8):28-31. |
| [12] | Huo Y, Fan Q G, Dembsey N A, et al. Improvements on flame retardant properties of PET/montmorillonite nanocomposite caused by polyborosiloxane [J ]. Materials Research Society Symposium Proceedings, 2007, 1007 (S12): 33-40. |
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