粗糙度对碳纤维布增强聚丙烯力学性能影响

为了研究粗糙度对碳纤维布增强聚丙烯力学性能的影响。通过打磨的方式制作出有着不同表面粗糙度的聚丙烯试件并在其试件上粘贴相同几何尺寸、相同数量的碳纤维布,同时在制作试件的过程中注重对涂刷胶层厚度的控制,制作出15个试件,进行了A,B,C三组拉伸实验。实验结果表明:粗糙度对碳纤维布增强聚丙烯拉伸性能的提高有着显著的影响,B,C组实验结果表明在相同的试验力下,粗糙度数值在0.141~2.751的范围内递增时,试件抗变形能力逐渐增强,试件的变形量逐渐减小。同时随着粗糙度数值的递增,实验中的试验力位移曲线在试验力0.5~0.6 kN的范围内线形斜率数值由0.61增长到5.61,且提升幅度也随着粗糙度的增加逐渐增大。

Effect of Roughness on Mechanical Properties of Polypropylene Reinforced by Carbon Fiber Cloth

In order to study the effect of roughness on mechanical properties of polypropylene reinforced by carbon fiber sheets.Polypropylene specimens with different surface roughness were made by grinding and pasted on the specimens with the same geometric size and the same number of carbon fiber sheets.Meanwhile,during the process of making specimens,15 specimens were made and three groups of tensile experiments were carried out A,B,C.The experimental results show that the roughness has a significant effect on the improvement of the tensile property of polypropylene strengthened by carbon fiber cloth.The experimental results of group B and group C show that under the same experimental force,when the roughness value increases in the range of 0.141-2.751,the deformation resistance of the specimen gradually increases and the deformation amount of the specimen gradually decreases.At the same time,with the increase of roughness value,the value of linear slope of the test force-displacement curve in the range of 0.61 to 5.61 within the test force range of 0.5-0.6 kN in the experiment,and the increase amplitude also increases gradually with the increase of roughness.