Synergistic effect between a novel hyperbranched charring agent and ammonium polyphosphate on the flame retardant and anti-dripping properties of polylactide
Synergistic effect between a novel hyperbranched charring agent and ammonium polyphosphate on the flame retardant and anti-dripping properties of polylactide
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新型超支化炭化剂与聚磷酸铵对聚丙交酯阻燃和抗滴落性能的协同作用
DOI：
10.1016/j.polymdegradstab.2010.02.011
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发表时间：
2010-05-01
影响因子：
5.9
通讯作者：
Wang, Yu-Zhong
中科院分区：
文献类型：
--
作者：
Ke, Chen-Hao;Li, Juan;Wang, Yu-Zhong
合成了一种新型的三嗪衍生物超支化多胺炭化剂（HPCA），并用H-1 NMR和FTIR对其进行了表征。在聚乳酸（PLA）树脂中加入HPCA和聚磷酸铵（APP）作为膨胀型阻燃剂（IFR）体系，使PLA具有阻燃性和耐滴性。通过极限氧指数（LOI）、UL-94垂直燃烧、锥形量热和热重分析（TGA）测试，研究了IFR-PLA复合材料的可燃性和热稳定性。结果表明，IFR体系对RA具有良好的阻燃和防滴性能。TGA曲线表明HPCA具有良好的成焦能力，与APP结合可产生明显的协同效应。这一作用极大地促进了IFR-PLA复合材料的成焦，从而提高了阻燃性能。此外，利用XPS、FTIR和SEM对炭渣的结构和形貌进行了研究。(C) 2010 Elsevier Ltd.版权所有。
A novel hyperbranched polyamine charring agent (HPCA), a derivative of triazines, was synthesized and well characterized by H-1 NMR and FTIR. HPCA and ammonium polyphosphate (APP) were added into polylactide (PLA) resin as an intumescent flame retardant (IFR) system to impart flame retardancy and dripping resistance to PLA. The flammability and thermal stability of IFR-PLA composites were investigated by limiting oxygen index (LOI), UL-94 vertical burning, cone calorimetry and thermogravometric analysis (TGA) tests. The results showed that the IFR system had both excellent flame retardant and anti-dripping abilities for RA. The TGA curves suggested that HPCA has good ability of char formation and when combined with APP, would induce synergistic effect which could be clearly observed. This effect greatly promoted the char formation of IFR-PLA composites, hence improved the flame retardant property. Additionally, the structure and morphology of char residues were studied by XPS, FTIR and SEM. (C) 2010 Elsevier Ltd. All rights reserved.