Degradable flame retardant and preparation method thereof

The invention relates to the technical field of flame retardant preparation, in particular to a degradable flame retardant and a preparation method thereof.The flame retardant is prepared from 100-500 parts of chlorinated paraffin, 20-1000 parts of polylactic acid, 10-550 parts of aluminum hydroxide, 50-620 parts of magnesium hydroxide, 90-450 parts of chlorosulfonic acid, 11-130 parts of sodium hydroxide and 1-5 parts of rhodochrosite. According to the application, a layer of polylactic acid is coated outside the flame retardant, and a degradable material is also used in the aspect of material selection, so that the flame retardant can be degraded, and when the flame retardant is used for retarding flame, the external polylactic acid is burnt, the internal flame retardant is exposed, internal rhodochrosite bursts due to the generated high temperature, so that the flame retardance of the flame retardant is improved, and the service life of the flame retardant is prolonged. And the flame retardant inside is ex