When it comes to flame retardants, everyone is familiar with them. As the name suggests, they are used to prevent burning. Will be the same thoughtaluminum hydroxideAnd magnesium hydroxide these two materials, because they are more common in our lives, but what is the difference between them as a flame retardant.

In addition to the considerable impact on the environment, magnesium hydroxide andaluminum hydroxideThere are obvious contrast in thermal reaction, decomposition temperature, applicable polymer, flame retardant ability, etc. The performance of magnesium hydroxide flame retardant is better than that of aluminum hydroxide flame retardant. The thermal decomposition temperature of magnesium hydroxide is 320°C, which is higher than that of aluminum hydroxide by 180°C. Therefore, plastics filled with magnesium hydroxide flame retardant can withstand higher processing temperatures, because increasing the processing temperature during plastic processing is beneficial to speed up the extrusion speed and shorten the molding time. When the material processing temperature is higher than 180°C, Only magnesium hydroxide can be selected.

The decomposition energy of magnesium hydroxide (1.37KJ/g) is higheraluminum hydroxideThe decomposition energy (1.17KJ/g) and heat capacity are 17% higher, which helps to improve the flame retardant efficiency. The hardness of magnesium hydroxide particles is less than that of aluminum hydroxide, so the equipment friction is small, which is beneficial to extend the service life of production equipment. Magnesium hydroxide has a strong carbonization effect and a large amount of carbonization, thereby improving the flame retardant efficiency and reducing smoke production. The thermal decomposition product of magnesium hydroxide is Mgo, and its neutralization ability is stronger than the thermal decomposition product Al2o3 of aluminum hydroxide, which can quickly neutralize the acidic and corrosive gases (SO2.NO2.CO2, etc.) generated during the combustion of plastics. The smoking inhibition ability of magnesium hydroxide is stronger than that of aluminum hydroxide. In the EPDM resin, 75% filled magnesium hydroxide was mixed as compared with a single flame retardant filled with aluminum hydroxide.

The above content is introduced today. I believe that after reading the above content, we have clearly understood some differences between them. With the improvement of production process, the technology of producing magnesium hydroxide flame retardant with bittern as raw material is becoming more and more mature, and the production cost will be greatly reduced. Therefore, the advantages of magnesium hydroxide flame retardant is obvious, and there is a replacementaluminum hydroxideThe trend.