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Preparation and Properties of Low Crystallinity Cross-linked Network Waterborne Polyurethane |
Received:June 08, 2022 |
DOI:10.11980/j.issn.0254-508X.2022.10.018 |
Key Words:waterborne polyurethane waterborne ink trimethylolpropane 2,2-dimethylolpropionic acid |
Fund Project:广东省普通高校特色创新类项目(2022KTSCX190);广东省普通高校重点科研平台项目(2022KCXT035)。 |
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Abstract:Taking Polybutylene glycol (PTMG) as the main raw material for the preparation of linear and cross-linked network waterborne polyurethane, the effect of the dosage of 2,2-dimethylolpropionic acid (DMPA) and trimethylolpropane (TMP) on physical properties of it was discussed in this study. The results showed that as the dosage of DMPA was increased from 2% to 10%, the particles of linear network waterborne polyurethane dispersion (LWPUD) became more uniform and regular, and the particle size of cross-linked network waterborne polyurethane dispersion (CWPUD) increased as the dosage of TMP was increased from 2% to 4%. |
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