Pan Yingtong, Luo Zhonglin, Wang Biaobing
Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.
Polymers (Basel). 2020 Nov 23;12(11):2761. doi: 10.3390/polym12112761.
Modified ammonium polyphosphate (MAPP) was prepared as a novel mono-component intumescent flame retardant (IFR) via the ionic exchange between ammonium polyphosphate (APP) and piperazine sulfonate, which is synthesized by self-assembly using 1-(2-aminoethyl) piperazine (AEP) and -aminobenzene sulfonic acid (ASC) as raw materials. This all-in-one IFR integrating three functional elements (carbon, acid, and gas source) showed more efficient flame retardancy and excellent smoke suppression as well as better mechanical properties than the conventional APP. The incorporation of 22.5 wt.% MAPP into polypropylene (PP) eliminated the melt dripping phenomenon and passed the UL-94 V-0 rating. The results of the cone calorimetry test (CCT) revealed that the release of heat, smoke, and CO is significantly decreased, demonstrating that this novel IFR endows PP with excellent fire safety more effectively. For PP/MAPP composites, a possible IFR mechanism was proposed based on the analysis of the pyrolysis gas and char residues.
通过聚磷酸铵（APP）与哌嗪磺酸盐之间的离子交换制备了改性聚磷酸铵（MAPP），哌嗪磺酸盐是以1-(2-氨基乙基)哌嗪（AEP）和对氨基苯磺酸（ASC）为原料通过自组装合成的。这种集成了三种功能元素（碳源、酸源和气源）的一体化膨胀型阻燃剂（IFR）比传统的APP表现出更高效的阻燃性、优异的抑烟性以及更好的机械性能。将22.5 wt.%的MAPP加入到聚丙烯（PP）中消除了熔体滴落现象，并通过了UL-94 V-0等级测试。锥形量热测试（CCT）结果表明，热、烟和CO的释放量显著降低，这表明这种新型IFR能更有效地赋予PP优异的防火安全性。对于PP/MAPP复合材料，基于对热解气体和炭渣的分析提出了一种可能的IFR机理。
