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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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竹基多孔碳材料的制备及其协同阻燃环氧树脂研究
DOI: 10.11777/j.issn1000-3304.2015.14442, PP. 897-905
Keywords: 多孔碳材料,环氧树脂,聚磷酸铵,协同作用,阻燃机理
Abstract:
以KOH为致孔剂,制备了竹基微孔多孔碳材料(PCM);将PCM与聚磷酸铵(APP)添加于环氧树脂(EP),研究了PCM协同APP阻燃EP复合材料的作用及机理.BET吸附、扫描电子显微镜(SEM)及X射线光电子能谱(XPS)分析显示,PCM6的比表面积、孔容、孔径分别为2063m2/g、0.9cm2/g、1.8nm;粒径为1~5μm;表面存在C—C,C—O—,C=O及COO—等活性基团.极限氧指数(LOI)、UL94垂直燃烧及锥形量热仪(Cone)研究表明,0.8wt%的PCM6与3.1wt%的APP复合可使EP复合材料的LOI由24.6%提高到27.3%,热释放速率峰值降低45.4%,PCM6表现出良好的协同阻燃作用.热失重分析及XPS研究表明,PCM6提高了阻燃EP复合材料的热稳定性,催化APP释放NH3、H2O,加快了交联成炭的速度及热解产物焦磷酸(酯)的形成,由此揭示了PCM协同APP阻燃EP的作用机理.
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