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首页> 外文期刊>Journal of Materials Research >Thermal endurance evaluation of poly(butylene terephthalate) by conventional and analytical methods
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Thermal endurance evaluation of poly(butylene terephthalate) by conventional and analytical methods

机译：通过常规和分析方法评估聚对苯二甲酸丁二醇酯的热耐久性

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摘要

The thermal endurance of poly(butylene terephthalate) was evaluated by both consolidated long-term conventional life tests and a short-term analytical procedure. The latter is based on oxidative stability measurements by isothermal differential calorimetry in a pure oxygen flow. The capability of the analytical technique to provide an activation energy for the thermo-oxidation process was verified. The results obtained by the two methods were compared and discussed. It is shown that the temperature index derived by the analytical procedure can be close to that obtained by the conventional tests, provided that a suitable selection of the test temperatures and failure criteria is made; however, benefits in term of test time shortening are lower than those previously obtained for polyolefin-based materials.
机译：聚对苯二甲酸丁二醇酯的耐热性通过综合的长期常规寿命试验和短期分析程序进行了评估。后者基于在纯氧气流中通过等温差热法进行的氧化稳定性测量。验证了分析技术为热氧化过程提供活化能的能力。比较和讨论了通过两种方法获得的结果。结果表明，只要适当选择测试温度和破坏标准，通过分析程序得出的温度指数可以接近通过常规测试获得的温度指数。然而，在缩短测试时间方面的益处低于先前基于聚烯烃的材料所获得的益处。

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