1. Expandable graphite can absorb harmful gases such as SO
Expandable graphite also has obvious adsorption effect on SO gas. The adsorption effect is closely related to temperature, and the adsorption effect at high temperature is more significant. In the process of preparing expandable graphite from expandable graphite, the anodized electrolyte is subjected to ultrasonic vibration, and the time of ultrasonic vibration is the same as the time of anodizing. Because the vibration of the ultrasonic wave on the electrolyte is beneficial to the polarization of the anode and the cathode, the speed of anodization is accelerated and the oxidation time is shortened. At low temperatures, the adsorption of expandable graphite on SO is dominated by physical adsorption. At high temperatures, the chemical adsorption is greatly increased, so the adsorption effect at high temperatures is also improved.
2. Expandable graphite can absorb heavy oil and other oily substances
Expandable graphite is a kind of adsorbent with excellent performance, especially it has a loose porous structure and strong adsorption capacity for organic compounds. 1g expandable graphite can absorb 80g petroleum, so expandable graphite is designed into various industrial greases And industrial oil adsorbents.
1. Expandable graphite as a new type of adsorbent due to the large internal mesh
Different from adsorbents of other materials, the internal molecules of expandable graphite are mainly medium and large pores, and most of them are in a connected state. The network connection between the layers is better. It has a good effect on the organic macromolecules adsorbing this heavy oil. Heavy oil molecules are easy to enter and quickly diffuse in the network system until they are filled with interconnected internal pores. Therefore, the adsorption effect of expandable graphite is better.
2. As a new type of adsorbent, expandable graphite has more pores on the surface.
Expandable graphite worms and worms are toothed with each other, and the surface pores formed are also more, which is conducive to the adsorption of macromolecular substances, showing a larger adsorption capacity, which can solve oils and organic non-polar substances. Flake graphite is natural crystalline graphite, which is shaped like fish phosphorus, belongs to the hexagonal crystal system, and has a layered structure. It has good high temperature resistance, electrical conductivity, heat conduction, lubrication, plasticity, acid and alkali resistance. Flake graphite is a natural solid lubricant with abundant resources and low price.