Cure and strain monitoring of novel unsaturated polyester/phenolic resin blends in the vacuum infusion process using fibre Bragg gratings
Cure and strain monitoring of novel unsaturated polyester/phenolic resin blends in the vacuum infusion process using fibre Bragg gratings
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DOI：
10.1177/0021998314568165
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发表时间：
2015-01
影响因子：
2.9
通讯作者：
A. Aktas;S. Boyd;R. Shenoi
中科院分区：
文献类型：
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作者：
A. Aktas;S. Boyd;R. Shenoi
近年来，为了改善不饱和聚酯树脂的耐火性能，人们对不饱和聚酯树脂与酚醛树脂的共混进行了一些研究。然而，在复合材料制造过程中，还没有关于不饱和聚酯/酚醛共混物的固化和应变监测的公开研究。在这项研究中，将不卷曲的三轴玻璃布预制件注入不饱和聚酯/酚醛共混物中，并使用光纤布拉格光栅传感器监测复合材料内部的应变发展，因为漫长而复杂的固化阶段在不同的温度下进行。无应变光纤Bragg光栅传感器和热电偶被用于温度监测和补偿，以获得真实的应变发展和残余应变。这一结果与一项研究有关，该研究提出了不饱和聚酯/酚醛共混物的固化分析。不饱和聚酯和酚醛树脂在共混物中不相容，表现出不同的固化机理，在菌株发育结果中也可以观察到这一点。本文首次尝试(I)在真空浸渍过程中处理这些新型树脂系统，(Ii)使用光纤布拉格光栅监测长而复杂的高温固化周期和真空浸渍过程中的应变发展。
In recent years, a few research studies have been published on the blending of unsaturated polyester and phenolic resins for the purpose of improving the fire properties of unsaturated polyester resins. However, there has been no published study on the cure and strain monitoring of unsaturated polyester/phenolic blends during composite manufacturing. In this study, non-crimp triaxial glass fabric preforms were infused with the unsaturated polyester/phenolic blends, and the strain developments inside the composites were monitored using fibre Bragg grating sensors, as the long and complex curing stages were progressing at different temperatures. Strain-free fibre Bragg grating sensors and also thermocouples were utilised for temperature monitoring and compensation in order to obtain true strain developments and residual strains. The results were associated with a study presenting the cure analyses of unsaturated polyester/phenolic blends. The unsaturated polyester and the phenolics were found to be incompatible and exhibited different curing mechanisms in the blends, which were also observable in the strain development results. This paper has been the first attempt to (i) process these novel resin systems in the vacuum infusion process and (ii) monitor the long, complex and high-temperature cure cycles and the strain developments in the vacuum infusion process using fibre Bragg gratings.