The invention discloses a preparation method of a simulative
human body bone tissue model. The preparation method comprises the following steps of: 1, preparing semi-rigid
polyurethane foams from a first ingredient, wherein the semi-rigid
polyurethane foams are taken as osteoporotic tissues; and 2, preparing a
polyurethane integral
skin from a second ingredient, wherein the polyurethane integral
skin is taken as an appearance
bone tissue; the first ingredient comprises the following components in parts by weight: 100 parts of
polyester polyol PS2352, 1.5 parts of a surfactant B 8471, 2.2 parts of PELAT 9540, 0.5 part of POLYCAT 46 (
Potassium Acetate), 0.5 part of water, 30.0 parts of foamed HCFC-141b (Hydrochlorofluorocarbons-141b), and 250 parts of
isocyanate; and the second ingredient comprises the following components in parts by weight: 100 parts of the
polyester polyol PS2352, 1.5 parts of the surfactant B 8471, 2.2 parts of the PELAT 9540, 1.5 parts of the POLYCAT 46, 1.0 part of N,N-dimethyl
cyclohexylamine, 0.50 part of pentamethyl
diethylene triamine, 0.5 part of water, 40.5 parts of the foamed HFC-245Fa, and 250 parts of the
isocyanate. The model prepared with the preparation method has a high
simulation degree, the tissue structure and the hand feeling of the model are similar to those of
human body bone tissues, and simultaneously, the model has good physical properties, can be used repeatedly, and facilitates
teaching simulation.