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Influence of thermal conditioning on tensile behaviour of single basalt fibres

机译：热调节对单根玄武岩纤维拉伸性能的影响

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This article presents an experimental investigation of the effects of temperature and atmosphere on the tensile behaviour of basalt fibres. The heating conditions have been chosen in order to mimic those used in thermal recycling of polymer matrix composites. The change of properties Is investigated at room temperature on fibres heat-treated for 1 h up to 600 degrees C in air and in inert atmosphere (argon). The loss in fibre strength was found to be affected by both temperature and atmosphere with a significant strength loss occurring under the heating conditions used for high temperature incineration of polymer composites. Scanning electron images of fibre fracture surfaces after tensile tests for different environments and temperatures confirmed that failure originated from the fibre surface. The modulus of thermally treated basalt fibres increased with conditioning temperature and these effects have been discussed in terms of decomposition of the organic sizing and structural relaxation during thermal treatment while Xray diffraction excluded the effect of crystallization phenomena on the strength loss of basalt fibres after thermal exposure. (C) 2017 Elsevier Ltd. All rights reserved.
机译：本文介绍了温度和气氛对玄武岩纤维拉伸行为影响的实验研究。选择加热条件是为了模拟聚合物基复合材料热循环中使用的条件。在室温下，在空气和惰性气氛（氩气）中，在高达600摄氏度的温度下热处理1小时的纤维，研究了性能的变化。发现纤维强度的损失受温度和气氛的影响，在用于聚合物复合物的高温焚烧的加热条件下会发生明显的强度损失。在不同的环境和温度下进行拉伸测试后，扫描纤维断裂表面的电子图像，可以确认破坏是由纤维表面引起的。热处理玄武岩纤维的模量随调节温度的升高而增加，这些效应已在热处理过程中有机上浆的分解和结构松弛方面进行了讨论，而X射线衍射排除了结晶现象对热暴露后玄武岩纤维强度损失的影响。 。 （C）2017 Elsevier Ltd.保留所有权利。

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