Dynamic Response of 3D Textiles Imbibed with Shear-Thinning Polyvinyl Alcohol Solutions
Source abstract
Abstract
The primary objective of this work is to provide new solutions to increase impact protection, using a three-dimensional textile imbibed with a shear-thinning fluid. An extensive analysis showed a scarcity of research papers related to the damping capacity of deformable porous materials imbibed with non-Newtonian fluid. No studies were found for shear-thinning fluid flow inside highly compressible foams or other soft, porous materials. The damping capacity of the imbibed material was evaluated using impact with a dropping weight. Polyvinyl alcohol solution mixed with water was used for imbibition of a three-dimensional textile. Hydrophilized carbon nanofibers were also added to the solution to augment the shear-thinning behavior. The measured impact force for imbibed samples showed an important reduction compared to the impact force for the dry material. This research does not focus on flow phenomena at the microstructural level but instead aims to highlight the macroscopic attenuation effect that occurs during the compression of the imbibed material.
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Research context
OpenAlex topics: Cellular and Composite Structures · Textile materials and evaluations · Natural Fiber Reinforced Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Machine Elements and Tribology, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania
Department of Bioresources and Polymer Science, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania
Military Technical University “Ferdinand I”, 050141 Bucharest, Romania
Funding
Romanian Ministry of Education and Research, CNCS—UEFISCDI
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