| abstract |
The invention discloses a preparation method of organic silicon thermoplastic polyurethane, which comprises the following steps: i, mixing macromolecular organic silicon containing active hydrogen, other macromolecular compounds containing active hydrogen and diisocyanate at the temperature of 50-90 ℃ according to a certain mode, and reacting to obtain an isocyanate-terminated prepolymer; and II, uniformly mixing the prepolymer obtained in the step I with a small molecular chain extender, pouring the mixture and curing. The organic silicon thermoplastic polyurethane prepared by the method has good mechanical property, and also has excellent hydrophobic property and low temperature resistance. |