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首页> 外文期刊>Journal of Applied Polymer Science >Ranking of rubber vulcanizates used as seals based on effect of accelerated aging
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Ranking of rubber vulcanizates used as seals based on effect of accelerated aging

机译：基于加速老化的作用，用作密封件的橡胶硫化橡胶的排名

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Technical properties such as hardness, tensile strength, ultimate elongation, and rebound resilience are popular in quality control, but the trend in these properties shows a generalized picture of the structure-property relations. Test specimens were aged in hot air by systematically varying the time and temperature from 24 to 96 h at 70 to 100 degreesC. For an effective comparison the observed values were plotted as a function of time, temperature, and formulations. The data thus obtained were correlated with shelf-aging in particular cases, and it was observed that aging at 100 degreesC for 24 h could be used for such formulations. A "sulfur donor" system cured nitrile-butadiene rubber (NBR) vulcanizate and an ethylene-propylene-diene (EPDM) vulcanizate showed the best retention of properties. Although the SEM micrograph of the NBK. was in agreement with this observation, the EPDM was not. (C) 2000 John Wiley & Sons, Inc. [References: 9]
机译：诸如硬度，抗张强度，极限伸长率和回弹力之类的技术特性在质量控制中很受欢迎，但是这些特性的趋势显示出结构-特性关系的一般情况。通过在70至100摄氏度下系统地将时间和温度从24到96 h进行系统改变，使试样在热空气中老化。为了进行有效比较，将观察到的值绘制为时间，温度和配方的函数。如此获得的数据在特定情况下与货架期相关，并且观察到对于这种制剂可以在100℃下老化24小时。用“硫供体”体系硫化的丁腈橡胶（NBR）硫化橡胶和乙烯-丙烯-二烯（EPDM）硫化橡胶显示出最佳的性能保留。虽然是NBK的SEM显微照片。与这一观察结果相符，EPDM与之不符。 （C）2000 John Wiley＆Sons，Inc. [参考：9]

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