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    How to achieve the flame retardant effect of expanded graphite

    Time:2023.10.31Browse:1

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    How to achieve the flame retardant effect of expanded graphite? The good physical and chemical structure of expanded graphite is widely used in industry. There are many applications that use the flame retardancy of expanded graphite, which has a good flame retardant effect. How can the effect be achieved? Today, the editor will explain how the flame retardant effect of expanded graphite can be achieved:




    1. Expanded graphite can generate many lightweight refractory carbon layers in fires, effectively isolating the radiation source of heat value onto the substrate and maintaining the substrate.




    2. Expanded graphite is an excellent conductor, and the prepared coating can avoid the accumulation of static charges, prevent fire, and prevent static electricity.




    3. Adding expanded graphite to coating materials can obtain flame-retardant and anti-static coatings, improving resistance to heat and fire characteristics.




    Starting from thermodynamic and surface chemistry issues, the adsorption mechanism of expanded graphite is explored. The analysis of the unique network like macropore structure on the surface and inside of expanded graphite, as well as the inherent graphite microcrystalline activity, determines its unique adsorption characteristics for coal tar like substances on the working surface.




    Expanded graphite refers to the formation of graphite interlayer compounds after acidification, which are quickly washed to neutral with water and then heated and dried into natural flake graphite, expanding into wormlike substances. It is called a graphite worm. Loose expanded graphite, as a porous carbon material, has a well-developed surface and internal pore structure, with an upward specific surface area of 50-200mm ²/ Gram is an excellent adsorbent. Expanded graphite has the characteristics of low density, light weight, high temperature resistance, corrosion resistance, and oxidation resistance. It has high chemical stability and non-toxic properties.




    There is a unique network like macroporous structure analysis and its inherent influence on graphite microcrystalline activity inside. How is the flame retardant effect of expanded graphite achieved? New adsorption materials play an irreplaceable role in wastewater hydrophobicity, adsorption purification, polar adsorption ability in non aqueous media, and high-temperature thermal decomposition masking of oil products.

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