The bond behaviour of CFRP-to-steel bonded joint considerably depends on the properties of adhesives, and is significantly influenced by temperature. Meanwhile, different adhesives behave differently at elevated temperatures. Therefore, an in-depth understanding of the effect of temperature on CFRP-to-steel bonded joints with different adhesives is crucial. In this study, a total of 24 single-lap shear joints with four different types of adhesives, were investigated to examine the bond behaviour of CFRP-to-steel bonded joints at a temperature of 23 °C, at 15 °C below the glass transition temperature T_g-15 °C, and at 15 °C above the glass transition temperature T_g + 15 °C. The results indicate that 1) the failure mode of specimens was transformed from cohesive failure or CFRP delamination failure at room temperature to adhesive-steel interface failure with an increase in temperature, 2) the bond strength of all specimens was reduced by approximately 10% at T_g-15 °C, and 70% at T_g + 15 °C. Based on a literature review, an analytical model was proposed to predict the bond strength of the CFRP-to-steel bonded joints at elevated temperatures, 3) the bond-slip relationship of the joints with linear adhesive was changed from a trapezoidal to a triangular with an increase in temperature; However, the bond-slip relationship of the joints with a nonlinear adhesive didn’t change, and 4) the stiffness of the joints decreased with temperature owning to the degradation of the elastic modulus of adhesive.

CFRP与钢的粘结接头的粘结性能在很大程度上取决于粘合剂的性能，并且受温度的影响很大。同时，不同的粘合剂在高温下的行为也不同。因此，深入了解温度对使用不同粘合剂的CFRP与钢之间的粘结连接的影响至关重要。在这项研究中，共研究了24种具有四种不同类型胶粘剂的单搭接剪切接头，以研究CFRP与钢之间的粘结接头在23°C的温度和低于玻璃的15°C的温度下的粘结行为。转变温度T _g -15°C，并且比玻璃转变温度T _g高15°C + 15°C。结果表明：1）随着温度的升高，试样的破坏模式从室温下的内聚破坏或CFRP分层破坏转变为胶粘剂-钢界面破坏； 2）所有试样的粘结强度在室温下降低了约10％。T _g -15°C，T _g时为70％ + 15°C。在文献综述的基础上，提出了一种分析模型来预测高温下CFRP与钢之间的粘结强度，3）线性粘合剂的粘结滑移关系从梯形变为三角形随着温度的升高 然而，使用非线性粘合剂的接头的粘结-滑动关系没有改变，并且4）由于粘合剂的弹性模量的降低，接头的刚度随温度降低。