| Preparation of Waterborne Polyurethane Emulsion and Its Application in Latex Products |
| Received:September 16, 2021 Revised:September 16, 2021 |
| DOI：10.12136/j.issn.1000-890X.2022.02.0103 |
| Key Words: waterborne polyurethane emulsion；latex product；condom；glove |
| Author Name | Affiliation | E-mail | | OUYANG Wei* | ChemChina Zhuzhou Rubber Research & Design Institute Co.，Ltd | oy_wei@163.com | | HU Han | ChemChina Zhuzhou Rubber Research & Design Institute Co.，Ltd | | | CAI Keping | ChemChina Zhuzhou Rubber Research & Design Institute Co.，Ltd | |
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| Abstract: |
| The effects of the amount (mass fraction) of dimethylol butyric acid，the mole ratio of
isocyanate group （—NCO）/hydroxyl group（—OH），the total amount (mass fraction) and mole ratio of
polytetrahydrofuran ether（PTMEG2000） and polypropylene glycol （PPG2000） on the properties of the
waterborne polyurethane emulsion and its latex products （condoms and gloves）were studied. The results
showed that，when the DMBA amount was 3%，—NCO/—OH mole ratio was 1. 5/1，the total mass fraction
of PTMEG2000 and PPG2000 was 68%，and the mole ratio of PTMEG2000/PPG2000 was adjusted to 9/1，
the waterborne polyurethane emulsion with small particle size，blue light appearance and good stability
was prepared, and the tensile strength and elongation at break of the condoms prepared by this waterborne
polyurethane emulsion reached 27. 8 MPa and 1 010%，respectively. When the emulsion was prepared by
using PTMEG2000 as the only hydroxyl component，the maximum tensile strength and tear strength of the
gloves produced by using the emulsion could reach 37. 5 MPa and 54 kN·m-1 respectively. |
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