Influence of ferric hydroxide on smoke suppression properties and combustion behavior of intumescent flame retardant silicone rubber composites
Influence of ferric hydroxide on smoke suppression properties and combustion behavior of intumescent flame retardant silicone rubber composites
复制标题
氢氧化铁对膨胀型阻燃硅橡胶复合材料抑烟性能及燃烧行为的影响
DOI：
10.1007/s10973-014-4108-5
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发表时间：
2015-01-01
影响因子：
4.4
通讯作者：
Gu, Yuanxiang
中科院分区：
文献类型：
--
作者：
Liu, Li;Zhuo, Jinlong;Gu, Yuanxiang
为了提高硅橡胶（SR）的阻燃性能，研制了一种新型的含膨胀型阻燃剂（IFR）和氢氧化铁（FeOOH）的硅橡胶（SR）杂化材料，采用锥形量热仪（CCT）和热重分析（TG）研究了FeOOH与IFR在无卤阻燃SR/IFR共混物中的协同阻燃作用。从CCT获得的数据表明，具有4.0质量% FeOOH的SR/IFR/FeOOH样品在所有样品中具有最低的HRR、SPR、TSR、THR和SF。数字照片给出了积极的证据，IFR与FeOOH之间存在协同效应。TG结果表明，FeOOH的加入提高了SR/IFR/FeOOH的高温热稳定性。除了传统的锥形量热仪测试研究外，还对SR/IFR/FeOOH的热降解动力学进行了深入的研究，以揭示SR/IFR/FeOOH优异阻燃性能的机理。FeOOH可以改善阻燃性，增加整个降解过程中的热稳定性，并加强形成热稳定和冷凝屏障的能力，用于传热和传质。SR/IFR/FeOOH的这些吸引人的特征表明本文提出的方法是制备非常有效的阻燃剂和相应的超级阻燃SR的良好途径。
New silicone rubbers(SR)-based hybrid material containing intumescent flame retardant (IFR) and ferric hydroxide (FeOOH) has been developed in order to improve flame retardancy of SR. The synergistic effects of FeOOH with IFR in halogen-free flame retardant SR/IFR blends have been studied by cone calorimeter test (CCT) and thermogravimetric analysis (TG). The data obtained from the CCT indicate that the SR/IFR/FeOOH sample with 4.0 mass% FeOOH has the lowest HRR, SPR, TSR, THR, and SF among all samples. The digital photo graphs give positive evidence that there is a synergistic effect between IFR with FeOOH. The TG results reveal that FeOOH can enhance the thermal stability of SR/IFR/FeOOH at high temperature. Besides the traditional investigations on cone calorimeter tests, an intensive study on the thermo-degradation kinetics was carried out to reveal the mechanism of the outstanding flame retarding performance of the SR/IFR/FeOOH. FeOOH can improve the flame retardancy, increase the thermal stability during the whole process of degradation, and strengthen the ability to form a thermally stable and condensed barrier for heat and mass transfer. These attractive features of SR/IFR/FeOOH suggest that the method proposed herein is a good approach to prepare very effective flame retardants and corresponding super flame retarding SR.