STUDY ON THE THERMAL EXPANSION PERFORMANCE AND HYBRID EFFECT OF HYBRID COMPOSITES

The relationship between thermal expansion performance and hybrid structure, hybrid type and interface status of hybrid composites is analyzed with experiments. An estimated formula for the coefficient of hybrid effect of hybrid composites is presented, and validated by experiments. The influence of the thermal effect on the hybrid effect is analyzed. The value of the thermal expansion of interlaminar and sandwich hybrid composites decreases with increasing carbon fiber content. The value of the thermal expansivity of interlaminar hybrid composites with surface modification is larger than for that without modification.