| abstract |
Disclosed are an aqueous polyurethane emulsion for an ultra-thin polyurethane condom with low modulus and high strength, and a preparation method therefor, wherein the aqueous polyurethane emulsion comprises: 15-18 parts by mass of a macromolecular diol, 4-6 parts by mass of a diisocyanate, 0.6-0.9 parts by mass of a hydrophilic chain extender, 0.4-0.8 parts by mass of a micromolecule chain extender, etc. The prepared aqueous polyurethane emulsion has characteristics such as a low modulus, a high strength and a high resilience. |