Barbed line hydrogel aggregate and preparation method and mechanical property testing method thereof

The invention provides a barb line hydrogel aggregate as well as a preparation method and a mechanical property testing method thereof, and belongs to the technical field of polymer fibers. The aggregate comprises a hydrogel matrix and a barb line, homonymous barbs and/or reverse barbs are cut on the surface of the barb line, and the barb line penetrates through the hydrogel matrix. The preparation method comprises the following steps: arranging the shaping frame between the first sheet body and the second sheet body, forming a through hole in the shaping frame, enabling the internal space of the shaping frame to be communicated with the outside through the through hole, injecting a reaction solution into the accommodating space through the through hole, enabling the accommodating space to be filled with the reaction solution, and performing low-temperature shaping to obtain the aggregate. The testing method comprises the following steps: applying a stretching and/or pulling-out acting force to the barb line