The influence of fiber-matrix adhesion on the linear viscoelastic creep behavior of 'as received' and 'surface modified' carbon fibers (AR-CF and SM-CF, respectively) reinforced polyphenylene sulfide (PPS) composite materials was investigated. Short-term tensile creep tests were performed on ±45° specimens under six different isothermal conditions, 40, 50, 60, 65, 70 and 75 °C. Physical aging effects were evaluated on both systems using the short-term test method established by Struik. The results showed that the shapes of the curves were affected neither by physical aging nor by the test temperature, allowing then superposition to be made. A unified model was proposed with a single physical aging and temperature-dependent shift factor, aT,te . It was suggested that the surface treatment carried out in SM-CF/PPS had two major effects on the creep response of CF/PPS composites at a reference temperature of 40 °C: a lowering of the initial compliance of about 25 % and a slowing down of the creep response of about 1.1 decade.

中文翻译：

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纤维-基体粘合对CF / PPS复合材料蠕变行为的影响：温度和物理老化特性。

研究了纤维-基体粘合对“原样”和“表面改性”碳纤维（分别为AR-CF和SM-CF）增强的聚苯硫醚（PPS）复合材料的线性粘弹性蠕变行为的影响。短期拉伸蠕变测试是在40、50、60、65、70和75°C的六个不同等温条件下对±45°样品进行的。使用Struik建立的短期测试方法评估了两个系统的物理老化效果。结果表明，曲线的形状既不受物理老化的影响，也不受测试温度的影响，从而可以进行叠加。提出了一个统一模型，该模型具有单个物理老化和与温度相关的位移因子aT，te。