Novel aluminised E-glass fibre reinforced unsaturated polyester composites, originally formulated for enhanced thermal and electrical shielding properties were evaluated in terms of their thermal performance. The thermal degradation of these specimens was analysed using a thermogravimetric analyser (TGA). The samples were heated from ambient temperature to 500 °C at a heating rate of 20 °C/min. All specimens were decomposed under dry nitrogen (N2) at a flow rate of 40 ml/min to yield gases and solid char. Aluminised E-glass composites were compared alongside the unmetallised E-glass and unreinforced composite. The major weight loss occurred between 200 and 400 °C. The unreinforced polyester had a maximum weight loss, 1.25%/°C, occurring at 360 °C. For the aluminised and unmetallised E-glass composites, the maximum rate of weight loss was 0.34 and 0.55%/°C, respectively. Experimental results show the degradation of the aluminised E-glass composites obtained from TGA tests is higher compared to those of unmetallised E-glass fibre and unreinforced polyester composite. This improvement is correlated to the aluminium coating.
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机译：评估了最初为提高热和电屏蔽性能而配制的新型镀铝E玻璃纤维增强不饱和聚酯复合材料的热性能。使用热重分析仪（TGA）分析这些样品的热降解。将样品以20°C / min的加热速率从环境温度加热到500°C。所有样品在干燥氮气（N2）下以40 ml / min的速度分解，产生气体和固体焦炭。将镀铝的电子玻璃复合材料与未金属化的电子玻璃和未增强的复合材料进行了比较。主要的失重发生在200至400°C之间。未经增强的聚酯在360°C时最大失重为1.25％/°C。对于镀铝和未镀金属的电子玻璃复合材料，最大失重率分别为0.34和0.55％/°C。实验结果表明，与未金属化的电子玻璃纤维和未增强的聚酯复合材料相比，通过TGA测试获得的含铝电子玻璃复合材料的降解率更高。这种改善与铝涂层有关。
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