Tensile and Interfacial Mechanical Properties for Single Aramid III Fibers under Dynamic Loading

• DOI: 10.3390/polym16060804
• Publication Date: 2024-03-13T17:23:11Z
• Authors: Fu Liu; Fangfang Li; Xuelei Li; Haobin Tian; Xudong Lei
• Keywords: Aramid; Tensile testing; Surface Modification; Tension (geology)

In this study, the traditional mini split Hopkinson tension bar (SHTB) was enhanced for dynamic mechanical performance testing of single fiber/resin interface composites. Single Aramid III fibers were modified using a polyamine modification treatment. Quasi-static and tensile tests conducted an electronic machine SHTB. The test results indicated that surface employing Catechol-Tetraethylenepentamine (Cat-TEPA) approach had negligible effect on properties fibers. microdroplet method introduced to measure interfacial shear strength (IFSS) fiber/waterborne polyurethane resin revealed increase in from 36.16 MPa 41.51 MPa. Furthermore, Scanning Electron Microscope (SEM) photography fiber after debonding exhibited regular grid structures area, which can prevent between microdroplet, thereby enhancing performance.