Correlation of accelerated aging and natural aging of glass fiber reinforced bromide epoxy vinyl ester composites
-
摘要: 选取我国典型气候条件下的万宁和拉萨这两个试验站，进行玻璃纤维/溴化环氧乙烯基酯3年的自然环境老化试验；同时在实验室环境下进行了玻璃纤维/溴化环氧乙烯基酯的湿热老化、热空气老化、光老化和高温浸水人工加速老化试验。测试老化后玻璃纤维/溴化环氧乙烯基酯的拉伸强度、弯曲强度和压缩强度等力学性能，研究了玻璃纤维/溴化环氧乙烯基酯在自然和实验室环境下的老化规律。用灰色理论中的灰色关联分析法计算了自然环境老化试验与人工加速老化试验的相关性。结果表明：以压缩强度为性能指标时，试验室加速光老化试验与自然环境老化试验的相关性最大，关联度达到了0.75左右。计算得到了加速光老化对拉萨和万宁自然老化的加速因子（AF）和加速转换因子（ASF），两地的ASF最终分别稳定在5.28和7.25。Abstract: The natural aging of glass fiber reinforced bromide epoxy vinyl ester composites was investigated in Wanning and Lasa stations of Chinese typical climate regions. Its accelerated aging experiments including hydrothermal, hot air, light and hot water were studied in laboratory at the same time. The mechanical properties including tensile strength, flexural strength, and compressive strength of glass fiber reinforced bromide epoxy vinyl ester composites after aging were tested. By using the grey correlation analysis method, the relationship between the natural aging and accelerated aging was calculated. The results show that the accelerated light aging has the best correlation with the natural aging, whose correlation degree reaches to 0.75 when taking compressive strength as property indicator. Accelerated factor (AF) and accelerated switch factor (ASF) between natural aging and accelerated light aging are obtained. The ultimate ASF in Lasa and Wanning is 5.28 and 7.25, respectively.
-
Keywords:
- bromide epoxy vinyl ester /
- natural aging /
- accelerated aging /
- correlation /
- accelerated factor
-
-
计量
- 文章访问数: 678
- HTML全文浏览量: 142
- PDF下载量: 427
下载:
