Keywords
Water polyurethane
Curing agent
Two-package
Double modification
Submitted : 2023-12-24
Accepted : 2024-01-08
Published : 2024-01-23
Abstract
By using HDI and TMP as the main raw materials, polyethylene glycol 400 (PEG400) is used as a nonionic hydrophilic modifier, and sodium hydroxyethyl sulfonate is used as an ionic hydrophilic modifier to synthesize adual hydrophilic modified polyurethane curing agent. Research revealed that introducing PEG400 for hydrophilic chainsegments and sodium hydroxyethyl sulfonate for hydrophilic ionic groups in the polyurethane curing agent componentleads to a uniform distribution of hydrophilic components, significantly enhancing compatibility with the aqueous polyolcomponent, and results in excellent film performance. The synthesis process and film were characterized using Fouriertransform infrared spectroscopy and high-resolution scanning electron microscopy in the study.
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