Sponge with good flame retardant property and production method thereof

The invention relates to a sponge with good flame retardant property and a production method thereof, and belongs to the field of sponge products, the sponge raw material comprises the following components: 80-100 parts of polyether polyol; 40 to 70 parts of toluene diisocynate; 5 to 30 parts of a hydroxyapatite nanowire cross-linked Al-PMOF flame retardant; 2-8 parts of a tin catalyst; 3 to 10 parts of chitosan; 1-2 parts of epoxy modified silicone oil; 4-8 parts of water; 2-6 parts of a foaming agent; the hydroxyapatite nanowire cross-linked Al-PMOF flame retardant is prepared from a hydroxyapatite nanowire and C48H26N4O10Al2, and the hydroxyapatite nanowire cross-linked Al-PMOF flame retardant is prepared from the hydroxyapatite nanowire and C48H26N4O10Al2. The preparation method has the beneficial effects that the hydroxyapatite nanowires and the C48H26N4O10Al2 are mixed and cross-linked, the aerogel is formed after freeze drying, the aerogel has nanoscale holes and is low in density, stable in chemical p