The invention discloses a low-cost fire-retardant
polyurethane foaming heat-preservation material. The low-cost fire-retardant
polyurethane foaming heat-preservation material is characterized by being prepared from a material A and a material B in parts by weight as follows through the steps of mixing,
casting, reacting and
ageing: the material A comprises 100 parts of polyether glycol, 3-4 parts of a
silane coupler KH-550, 2-3 parts of nanometer ore residue, 1.0-1.2 parts of
magnesium stearate, 1-2 parts of butylmercaptooxo-
stannane, 3-4 parts of water, 10-20 parts of aluminum
hydroxide powder, 12-16 parts of expanded
perlite powder, 10-12 parts of talcum
powder, 2-3 parts of
methylisothiazolinone and 6-8 parts of modified attapulgite; and the material B comprises 30-34 parts of diphenyl
methane diisocyanate. According to the low-cost fire-retardant
polyurethane foaming heat-preservation material disclosed by the invention, the modified attapulgite and the aluminum
hydroxide powder are added, so that the low-cost fire-retardant polyurethane foaming heat-preservation material is a good physical
fire retardant, and has an excellent fire-retardant effect; and the nanometer ore residue, the expanded
perlite powder and the talcum powder are used for filling, so that the strength of the material is enhanced; besides, the low-cost fire-retardant polyurethane foaming heat-preservation material has definite tenacity, and is relatively low in density, resistant to
ageing, resistant to yellowing, non-toxic, harmless and
environmentally friendly.