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首页> 外文期刊>Journal of Applied Polymer Science >Fire performance and post-fire mechanical properties of polymer composites coated with hybrid carbon nanofiber paper
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Fire performance and post-fire mechanical properties of polymer composites coated with hybrid carbon nanofiber paper

机译：杂化碳纳米纤维纸涂布的聚合物复合材料的防火性能和防火性能

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摘要

In this study, glass fiber reinforced polyester composites were coated with carbon nanofiber/clay/ammonium polyphosphate (CCA) paper and carbon nanofiber/exfoliated graphite nanoplatelets/ammonium polyphosphate (CXA) paper. The composites were exposed to a heat flux of 35 kW/m ~2 during the cone calorimeter testing. The testing results showed a significant reduction in both heat release rates and mass loss rates. The peak heat release rate (PHRR) of CCA and CXA composite samples in the major decomposition period are 23 and 34% lower than the control sample, respectively. The time to reach the PHRR for the CCA and CXA composite samples are a 125% longer than the control sample. After the composite samples were exposed to heat for different time periods, their post-fire mechanical properties were determined by three-point bending testing. The three-point bending testing results show that the composite samples coated with such hybrid papers exhibit more than 20% improvement in mechanical resistance at early stages of combustion. The mechanism of hybrid carbon nanofiber paper protecting the underlying laminated composites is discussed.
机译：在这项研究中，玻璃纤维增​​强的聚酯复合材料涂有碳纳米纤维/粘土/聚磷酸铵（CCA）纸和碳纳米纤维/片状石墨纳米片/聚磷酸铵（CXA）纸。在锥形量热仪测试期间，复合材料暴露于35 kW / m〜2的热通量。测试结果表明，放热率和质量损失率均显着降低。在主要分解期间，CCA和CXA复合样品的峰值放热率（PHRR）分别比对照样品低23％和34％。 CCA和CXA复合样品达到PHRR的时间比对照样品长125％。复合材料样品暴露于不同时间的热量后，通过三点弯曲试验确定其燃烧后的机械性能。三点弯曲测试结果表明，涂​​覆有这种杂化纸的复合样品在燃烧早期显示出超过20％的机械阻力提高。讨论了混合碳纳米纤维纸保护下面的层压复合材料的机理。

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