Hyperbranched degradable polyurethane material and preparation method thereof

The invention relates to the technical field of C09J175/04, in particular to a hyperbranched degradable polyurethane material and a preparation method thereof. The hyperbranched degradable polyurethane material is prepared from the following raw materials in parts by weight: 3 to 12 parts of polyester polyol, 4 to 9 parts of castor oil, 6 to 9 parts of aliphatic polyisocyanate, 1 to 2.5 parts of chain extender and 0.01 to 0.15 part of catalyst. The degradable polyol polycaprolactone polyol and the biological material castor oil are adopted, a series of degradable polyurethane materials are prepared by adjusting the proportion of the raw materials, good physical and chemical properties are achieved, the preparation method is easy and convenient to operate and easy to control, meanwhile, the cost of the needed raw materials is low, the current resource saving development law is met, and the degradable polyurethane material has good application prospects. Polyurethane materials with corresponding mechanical prop