Study on wear characteristics of carbon fiber at needle end in prefabricated composite weaving

Abstract

Carbon fiber composites are widely used in aerospace, military and other fields. Their tensile properties are mainly borne by interwoven carbon fibers, wear of carbon fiber seriously affects the mechanical properties of carbon fiber composite material. In the process of prefab weaving, the end of the weaving needles carrying the movement of the carbon fibers causes serious wear on the fibers. In order to study the effect of weaving needle parameters and process parameters on the wear of carbon fiber bundle, a friction and wear experimental device of carbon fiber bundle was made. According to the research results, the corresponding parameters were optimized to reduce the wear of the carbon fiber bundle during weaving. The wear of carbon fiber bundle modified by imidazoline surfactant was also studied. The effects of fiber tension, weaving angle and needle end angle on the wear of carbon fiber bundle were studied by the control variable method. The wear of carbon fiber bundle was characterized by image binarization, SEM scanning and residual fracture strength detection. The residual fracture strength of the optimized weaving needles was increased by 23.92%, the residual fracture strength of the modified carbon fiber bundle increased by 14.57% after needle end wear.

Keywords

• Carbon fiber
• Abrasion
• Modified
• Hairiness