Composites Part B: Engineering ( IF 13.1 ) Pub Date : 2021-02-11 , DOI: 10.1016/j.compositesb.2021.108717 Yuan-Yuan Zhang , Zheng Sun , Yuan-Qing Li , Pei Huang , Qing Chen , Shao-Yun Fu
Tensile creep behavior of short-carbon-fiber reinforced polyetherimide (SCF/PEI) composites is investigated at ambient temperature by short and long creep tests in this work. Influences of carbon fiber concentration and applied tensile stress on the creep performance of SCF/PEI composites are studied. Four viscoelastic models are employed to quantify the viscoelastic behavior of SCF/PEI composites and the effect of fiber surface treatment is discussed on the creep behavior. Short-term creep results show that a relatively high carbon fiber content and fiber surface thermal treatment lead to a relatively high creep resistance. In order to accelerate the short-term creep test, the time–temperature superposition principle (TTSP) is employed to detect the long-term creep behavior of SCF/PEI composites at ambient temperature. In addition, an attempt has been made to generate a master curve to approximate the long-term creep behavior of the SCF/PEI composites at ambient temperature.
中文翻译:
短碳纤维增强聚醚酰亚胺复合材料的拉伸蠕变行为
通过这项工作中的短时和长时蠕变测试,研究了短碳纤维增强聚醚酰亚胺(SCF / PEI)复合材料在环境温度下的拉伸蠕变行为。研究了碳纤维浓度和施加的拉应力对SCF / PEI复合材料蠕变性能的影响。四种粘弹性模型被用来量化SCF / PEI复合材料的粘弹性行为,并讨论了纤维表面处理对蠕变行为的影响。短期蠕变结果表明,较高的碳纤维含量和纤维表面热处理会导致较高的抗蠕变性。为了加快短期蠕变测试,采用时温叠加原理(TTSP)来检测SCF / PEI复合材料在环境温度下的长期蠕变行为。此外,