What material is the most buoyant? What material is the most buoyant? What material is most buoyant

Super material buoyancy Researchers in China recently reported on a miniature super-buoyancy boat made of new materials that is extremely buoyant and the size of a life jacket is enough to hold up a horse. Pan Qinmin, an associate professor from the School of Chemical Engineering at Harbin Institute of Technology, and his colleagues experimented with a variety of stamp-sized (4 cm long, 2 cm wide, 1 cm high) superhydrophobic microporous wire microships. They folded a 200-micron diameter copper wire mesh treated with a variety of substances such as silver nitrate to form the shape of a ship, and the surface of the ship was highly hydrophobic.

The entire experimental process was carried out under common experimental conditions using easily available materials. "It would be ideal to use alloys or plastics with higher hardness and lower density," says Pan, "because copper is a material that can be easily deposited on the surface of the copper mesh by a simple displacement reaction with a binary micro-nanostructure, which is essential for superhydrophobicity." Compared to other ordinary copper boats that do not use the new surface technology, the waterproof boat floats more smoothly, and even if the edge of the copper boat is already below the water level, it can still remain suspended and exhibit an amazing carrying capacity.

Even after physical damage, the waterproof boat can regain its superhydrophobicity. Professor Yin Yansheng, Dean of the Institute of Materials Science and Engineering at Ocean University of China, said: "The corrosion resistance of copper in the ocean has been praised by all walks of life, and its advantages are definitely better than aluminum.

However, due to the lack of copper resources in China and even in the world, a relatively cheap and lightweight aluminum is used as a partial replacement, just as we use aluminum tubes to replace copper tubes in the air conditioning industry. At the same time, the researchers also say that it is difficult to apply the material to the manufacture of ships, but it is likely to be applied to water machinery and equipment, such as environmental monitoring. This is because the air film on the surface of the superhydrophobic material will significantly reduce the air resistance and fluid resistance.

In order to apply this material to practice, in addition to continuing to expand and select mesh materials, it is necessary to conduct in-depth research on the stability of the surface structure of the material, especially the dynamic stability, the movement resistance of the material in water, etc. "The biggest highlight of this research is that it digests and absorbs basic research for meaningful applied research. Professor Gao Yuan, School of Environment and Materials, Yantai University, said.

At the same time, he pointed out that superhydrophobic materials are mainly carried out from two aspects: the preparation of surface micro-nano structures and the treatment of low surface energy substances. For practical applications, copper is susceptible to oxidation and not hard enough. Ship hulls are almost all made of steel alloys, and how to prepare or form micro-nano structures on the surface of these materials by low-cost engineering methods is an urgent problem to be solved.

Foam boards or boxes, the same is true for electrical appliances

It's better to say what you want, that will help you. I don't know how buoyant you want to be, how strong you are.

The lower the density, the greater the buoyancy, so the buoyancy of hydrogen is minimal in any medium. If you only think about solid materials, then I think it's lithium metal, but it's chemically reactive and difficult to use, and other smaller atoms are difficult to form solids, not considering wood, because wood has a lot of air in it to provide buoyancy.

1. Copper is a transition element, the chemical symbol Cu, English copper, atomic number 29. Pure copper is a soft metal, the surface is reddish-orange with metallic luster when it is just cut, and the element is rapidly cracked and purple-red. Good ductility, high thermal and electrical conductivity, so it is the most commonly used material in cables and electrical and electronic components, and can also be used as building materials, which can form many alloys.

2. The use of copper has a profound impact on the progress of early human civilization. Copper is a metal found in the earth's crust and oceans.

3. China's shipbuilding industry: the copper waterproof ship floats more smoothly, even if the edge of the copper ship is lower than the horizontal plane, it can still maintain a suspended state, and it shows an amazing carrying capacity. Even after physical damage, the waterproof boat can regain its superhydrophobicity.

It is a super-buoyant material for the nautical industry.

The magnitude of buoyancy depends on two factors: the volume of the object dislodged in the liquid or gas and the density of the liquid or gas. According to this principle, for a given liquid or gas, the object with the most buoyancy will be the one that can dispel the largest volume, and the density of that object should be less than that of the liquid or gas.

In liquids, the object with the most buoyancy is the one that has the largest volume and is less dense than that liquid. For example, a sponge that is large in size and less dense than water can produce greater buoyancy in water.

In gases, the same principle applies. The object with the most buoyant force is the one with the largest volume and less density than that gas. For example, the air sacs in a hot air balloon are filled with light hydrogen or helium gas, as these gases are less dense than the surrounding air, allowing the burning balloon to generate buoyancy.

According to Archimedes' principle, buoyancy refers to the upward thrust experienced by an object in a liquid or gas whose magnitude is equal to the weight of the liquid or gas dislodged by the object.

To sum up, the object with the most buoyancy should meet the following two conditions: it is the largest in volume and the density is less than the density of the liquid or gas in which it is located. Thus, sponges in water and light balloons in air are two examples.

Please note that objects with maximum buoyancy may vary for different liquids or gases. <>