采用膨胀型阻燃剂（IFR）分别与蒙脱土（MMT）、硼酸锌（ZB）、MnO2阻燃协效剂复配制备了阻燃型红松木粉/聚丙烯复合材料。借助TG、DTG、DSC热分析技术深入探讨了IFR与阻燃协效剂间的协效性;并利用FTIR、SEM对协效性进行了验证。结果表明：三种阻燃协效剂与IFR间都存在一定的协效性;MMT的加入降低了热分解过程的热释放量,并显著提高了材料的残炭量;ZB的协效性主要体现在热分解的第二阶段,并使最终的残渣呈现出一种泡状结构;而MnO2主要在热分解的第一阶段发挥作用,可催化聚磷酸铵（APP）提前分解,同时降低体系的热解速率,并使残渣致密化。
The fire retarded synergistic agents of montmorillonoite（MMT）,zinc borate（ZB） and MnO2 were respectively blended with the intumescent fire retardant（IFR） to prepare the fire retarded korean pine wood flour/polypropylene composites.The fire retarded synergistic effect was evaluated by the thermal analysis of TG,DTG and DSC and was further validated by FTIR and SEM.The results indicate that there is some fire retardant synergy among the three kinds of synergistic agents and IFR.MMT decreases the heat release and increases the char residue significantly.The synergistic effect of ZB is mainly incarnated in the second stage of thermal decomposition,and it can result in the foamed char residue.While the role of MnO2 is in the first stage of thermal decomposition,and it promotes the decomposition of ammonium polyphosphate（APP） in advance,reduces the pyrolysis rate of the system,and makes the char residue more stable and dense.
参考文献
| [1] | Clemons C. Woodeplastic composites in the United States: The interfacing of two industries [J]. Forest Products Journal, 2002,52(6):10-18. |
| [2] | Garcia M, Hidalgo J, Garmendia I. Wood-plastics composites with better fire retardancy and durability performance [J]. Composites: Part A, 2009, 40(11): 1772-1776. |
| [3] | Stark N M, White R H, Mueller S A, et al. Evaluation of various fire retardants for use in wood flour-polyethylene composites [J]. Polymer Degradation and Stability, 2010, 95(9): 1903-1910. |
| [4] | Suppakarn N, Jarukumjorn K. Mechanical properties and flammability of sisal/PP composites: Effect of flame retardant type and content [J]. Composites: Part B, 2009, 40(7): 613-618. |
| [5] | Zhao Y S, Wang K J, Zhu F H,et al. Properties of poly(vinyl chloride)/wood flour/montmorillonite composites: Effects of coupling agents and layered silicate [J]. Polymer Degradation and Stability, 2006, 91(12): 2874-2883. |
| [6] | 吴志平, 胡云楚, 陈美琴, 等. 超细硼酸锌对LDPE/IFR体系抑烟性能的影响 [J]. 塑料科技, 2008, 36(7): 56-60. |
| [7] | Baysal E, Yalinkilic M K, Altinok M, et al. Some physical, biological, mechanical, and fire properties of wood polymer composite (WPC) pretreated with boric acid and borax mixture [J]. Construction and Building Materials, 2007, 21(9): 1879-1885. |
| [8] | 李 斌, 王建祺, 丁养兵. CuO对硬质PVC热解、阻燃和抑烟的锥形量热仪(CONE)研究 [J]. 高分子材料科学与工程, 1999, 15(5): 124-127. |
| [9] | 马晓燕, 梁国正, 鹿海军. 聚合物/天然硅酸盐黏土纳米复合材料 [M]. 北京: 科学出版社, 2009: 18. |
| [10] | Lakshmi M S, Narmadha B, Reddy B S R, et al. Enhanced thermal stability and structural characteristics of different MMT-clay/epoxy-nanocomposite materials [J]. Polymer Degradation and Stability, 2008, 93(1): 201-213. |
| [11] | Tang Y, Hu Y, Li B G, et al. Polypropylene/montmorillonite nanocomposites and intumescent, flame-retardant montmorillonite synergism in polypropylene nanocomposites [J]. Journal of Polymer Science Part A: Polymer Chemistry, 2004, 42(23): 6163-6173. |
| [12] | 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. |
| [13] | Modesti M, Lorenzetti A, Besco S, et al. Synerginsm between flame retardant and modified layered silicate on thermal stability and fire behaviour of polyurethane nanocomposite foams [J]. Polymer Degradation and Stability, 2008, 93(12): 2166-2171. |
| [14] | 翁诗甫. 傅里叶变换红外光谱分析 [M]. 北京: 化学工业出版社, 2010: 332-362. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%