Method for preparing water polyurethane by solventless method
A water-based polyurethane and solvent-free technology, applied in the field of preparation of water-based polyurethane, can solve the problems of flammable and explosive organic solvents, air pollution, and strong odor, and achieve the effects of low cost, not easy to damage, and simple operation
Inactive Publication Date: 2006-11-29
SHANGHAI UNIV
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A process for preparing water polyurethane by non-solvent method includes such steps as proportional reaction between polyisocyanate and polyol to obtain isocyanate terminated oligomer, cooling, adding water, strong stirring while adding the aqueous solution of triethylamine and ethyldiamine or divinyltriamine, and extending chain while dispersing.
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Property | Measurement | Unit |
Breaking strength | 22.54 | MPa |
Breaking strength | 16.82 | MPa |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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