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首页> 外文期刊>Polymer Degradation and Stability >Halogen-free flame retarded poly(butylene terephthalate) (PBT) using metal oxides/PBT nanocomposites in combination with aluminium phosphinate
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Halogen-free flame retarded poly(butylene terephthalate) (PBT) using metal oxides/PBT nanocomposites in combination with aluminium phosphinate

机译：金属氧化物/ PBT纳米复合材料与次膦酸铝结合使用的无卤阻燃聚对苯二甲酸丁二酯（PBT）

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摘要

The flame retardancy of poly(butylene terephthalate) (PBT) containing aluminium diethlyphosphinate (AlPi) and/or nanometric metal oxides such as TiO_2 or Al_2O_3 was investigated. In particular the different active flame retardancy mechanisms were discovered. Thermal analysis, evolved gas analysis (TG-FTIR), flammability tests (LOI, UL 94), cone calorimeter measurements and chemical analyses of residues (ATR-FT1R) were used. AlPi acts mainly in the gas phase through the release of diethylphosphic acid, which provides flame inhibition. Part of AlPi remains in the solid phase reacting with the PBT to phosphinate-terephthalate salts that decompose to aluminium phosphate at higher temperatures. The metal oxides interact with the PBT decomposition and promote the formation of additional stable carbonaceous char in the condensed phase. A combination of metal oxides and AlPi gains the better classification in the UL 94 test thanks to the combination of the different mechanisms.
机译：研究了含有二乙次膦酸铝（AlPi）和/或纳米金属氧化物（如TiO_2或Al_2O_3）的聚对苯二甲酸丁二酯（PBT）的阻燃性。特别是发现了不同的活性阻燃机理。使用了热分析，逸出气体分析（TG-FTIR），可燃性测试（LOI，UL 94），锥形量热仪测量和残留物化学分析（ATR-FT1R）。 AlPi主要在气相中通过释放二乙基磷酸来提供火焰抑制作用。 AlPi的一部分保留在固相中，与PBT反应生成次膦酸酯-对苯二酸盐，后者在较高温度下分解为磷酸铝。金属氧化物与PBT分解相互作用，并在冷凝相中促进形成其他稳定的碳质炭。由于不同机制的结合，金属氧化物和AlPi的组合在UL 94测试中获得了更好的分类。

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  • 来源
    《Polymer Degradation and Stability》 |2009年第8期|1245-1253|共9页
  • 作者

    E. Gallo; U. Braun; B. Schartel; P. Russo; D. Acierno;

  • 作者单位

    Department of Materials and Production Engineering, University of Naples 'Federico II', Piazzale Tecchio 80, 80125 Naples, Italy;

    BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany;

    BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany;

    Department of Materials and Production Engineering, University of Naples 'Federico II', Piazzale Tecchio 80, 80125 Naples, Italy;

    Department of Materials and Production Engineering, University of Naples 'Federico II', Piazzale Tecchio 80, 80125 Naples, Italy;

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  • 正文语种 eng
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  • 关键词

    poly(butylene terephthalate); flammability; metal oxide nanocomposite; metal phosphinate;

    机译：聚对苯二甲酸丁二酯;易燃;金属氧化物纳米复合材料;金属次膦酸盐;

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