Natural hydromagnesite (hydromagnesite compound flame retardant) Hydromagnesite is a new type of high temperature resistant flame retardant, which can release water and CO2 successively under the action of heat. These decomposition and release processes can absorb a lot of heat, thereby reducing the flame retardant. The temperature of the flame on the surface of the burning polymer material can delay its degradation or make it difficult to burn; the water vapor and CO2 produced at the same time can cover the flame and reduce the concentration of combustible gas and oxygen in the combustion zone; in addition, the remaining MgCO3 and Mg(OH)2 can be decomposed And MgO, etc. can form a heat and mass transfer barrier layer on the surface of the polymer, hindering the continued decomposition of the polymer matrix and preventing droplets.
releases moisture at approximately 220°C (thermal decomposition)
Releases carbon dioxide at a temperature of about 330°C
· At a temperature of about 560°C, hydromagnesite particles aggregate on the surface of the burning polymer to form a stable cement-like coke layer, thereby inhibiting the combustion process and the spread of the flame through burning droplets.
·Hydromagnesite can be completely decomposed at 727°C and converted into…
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