Shear thickening fluid/carbon nanotube foam shock-resistant energy-absorbing material, preparation method and application

Abstract

The invention discloses a shear thickening liquid / carbon nanotube foam anti-impact energy-absorbing material, a preparation method and an application. The preparation method includes: placing the carbon nanotube foam into a reaction chamber, and introducing carrier gas, carbon source and reducing gas into the reaction chamber, and forming the carbon nanotube foam on the surface of the carbon nanotube foam and the depositing amorphous carbon inside to obtain a carbon nanotube foam deposited with amorphous carbon; The shear thickening liquid / carbon nanotube foam anti-impact and energy-absorbing material is obtained by immersing in the liquid. The shear thickening liquid / carbon nanotube foam anti-shock and energy-absorbing material prepared by the invention is light in weight, good in flexibility, and has good impact resistance and energy-absorption performance. At the same time, the preparation method provided by the invention is simple and easy to control, and can be applied to actual production , has certain economic and social effects.

Description

Shear thickening liquid / carbon nanotube foam shock-resistant energy-absorbing material, preparation method and application technical field The invention belongs to composite material technical field, be specifically related to a kind of shear thickening liquid / carbon nanotube foam impact resistance Energy absorbing material, preparation method and application. Background technique Energy absorption is a very important function in the field of materials, and energy-absorbing materials can absorb the energy generated when the material is impacted. Therefore, energy-absorbing materials are widely used in military and civilian fields such as automobiles, aircraft, packaging, and body armor. Structural design is particularly critical to the energy absorption of energy-absorbing materials during impact resistance. When the human body or property is impacted The impact-resistant structure can absorb the energy brought by the impact to a certain extent to achieve the effect...

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Problems solved by technology

Rigid and semi-rigid impact-resistant energy-absorbing materials increase the weight of impact-resistant protective materials, and are not easy to bend, heavy to wear, and inconvenient to move; The material has excellent strength, modulus and energy-absorbing properties, but it is difficult to package. In the actual application process, the shear thickening liquid is prone to sedimentation and leakage, which affects the impact resistance and energy-absorbing effect. In order to enhance the protective effect, it is usually By increasing the number of layers of fiber braids or inserting ceramic plates, this increases the weight of the impact-resistant energy-absorbing material to a certain extent and affects the flexibility of personnel movements; Although impact flexible energy-absorbing materials are light in weight and good in flexibility, their energy-absorbing effects are poor, and they cannot dissipate energy in a timely manner when subjected to high-speed impacts, and strong impact energy will still remain on personnel or property equipment. cause personal or equipment damage to a certain extent

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