Nanofluid energy absorbing material

High-performance, shock-resistant, shock-absorbing and energy-absorbing protective materials are widely used in national defense, industrial construction, automobile safety, child protection, sporting goods and daily life, such as armor, body armor, explosion-proof clothing, stab-resistant clothing, Aircraft landing gear, highway isolation piers, safety helmets, car bumpers, sports shoes and sports protective gear, precision instrument packaging, shock and noise reduction systems, etc. Therefore, this type of material has long been the scientific and industrial circles Research and development hotspots.

The energy absorption density per unit mass and the energy absorption density per unit volume are the key to the protective performance of protective materials. In this regard, scientists from various countries have carried out a lot of research work, including research on high-energy-absorbing materials, and optimization of the topology and geometric structure of energy-absorbing components. , Macro-design and optimization of protective structure, etc. Various energy absorption mechanisms (such as plastic instability, phase transition, friction dissipation, surface/interface energy absorption) are used to increase the energy absorption density of the protective structure.

However, what is unsatisfactory is that most of the materials on the market currently have a maximum energy absorption density of only about 20J/g, which is far from meeting the requirements for protection performance under general shock and vibration conditions. The required security is even further different.