The effect of simultaneous heat/fire and impact on carbon fibril and particle release from carbon fiber-reinforced composites,Polymer Composites

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The effect of simultaneous heat/fire and impact on carbon fibril and particle release from carbon fiber-reinforced composites
Polymer Composites ( IF 4.8 ) Pub Date : 2021-09-02 , DOI: 10.1002/pc.26290
Robert Chapple ₁ , Baljinder K. Kandola ₁ , Peter Myler ₁ , Laurent Ferry ₂ , José‐Marie Lopez‐Cuesta ₂ , Carine Chivas‐Joly ₃ , Emmajane L. Erskine ₄

Affiliation

A novel laboratory scale testing equipment has been designed and developed, which combines impact and heat/fire conditions to enable the testing of composite laminates, including the ability to capture debris/particles released during the test. This incorporates a pendulum impactor to create impact whilst the sample is exposed to a cone heater at a particular heat flux for a specified period of time. A protocol for testing samples under different conditions and capturing particles released, both from the front and back faces, along with effluents has been provided. A carbon fiber-reinforced epoxy composite was impacted whilst being exposed to different heat fluxes for a range of time periods. A loss of stiffness related to the heating exposure time was found to affect the damage type. At lower heat fluxes, the captured particles included broken carbon fibers, decomposed resinous particles and resin coated fibers. Quantitative and morphological analyses of captured particles demonstrated that the sizes of decomposed resin particles and fibers reduced with longer exposure time or increased heat flux. This information could be useful to provide insight into potential health hazards of components of the composites.

中文翻译：

同时热/火和冲击对碳纤维增强复合材料中碳原纤维和颗粒释放的影响

设计和开发了一种新型实验室规模的测试设备，它结合了冲击和热/火条件，能够测试复合层压板，包括捕获测试过程中释放的碎片/颗粒的能力。这结合了一个摆锤式冲击器来产生冲击，同时样品在特定的热通量下暴露于锥形加热器指定的时间段。提供了在不同条件下测试样品并捕获从正面和背面释放的颗粒以及流出物的协议。碳纤维增强环氧树脂复合材料受到冲击，同时暴露于不同的热通量一段时间。发现与加热暴露时间相关的刚度损失会影响损坏类型。在较低的热通量下，捕获的颗粒包括断裂的碳纤维、分解的树脂颗粒和树脂涂层纤维。捕获颗粒的定量和形态分析表明，分解的树脂颗粒和纤维的尺寸随着暴露时间的延长或热通量的增加而减小。此信息可能有助于深入了解复合材料组件的潜在健康危害。

更新日期：2021-11-09

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