Research reveals superior flame retardancy in polyurethane acrylates, indicating enhanced mechanical properties compared to petroleum-based alternatives.
A series of nonhalogen UV‐curable polyurethane acrylates (PUA) were synthesized using polyethylene carbonate diol (PECD), isophorone diisocyanate, hydroxyethyl acrylate, a reactive phosphorus‐containing acrylate, and pentaerythritol triacrylate. The flame retardancy, mechanical properties, hardness, abrasion resistance, and solvent absorption of the PECD‐based UV‐cured polyurethane were systematically studied and compared to polyester and polyether‐based analogues. Infrared spectroscopy confirmed successful PECD‐PUA synthesis. Results demonstrate the PECD confers superior flame retardancy compared to conventional petroleum‐based materials, achieving a limiting oxygen index of 28.2% and UL‐94 5VB rating, alongside excellent comprehensive performance: tensile strength of 15.56 MPa, pencil hardness of 6H, abrasion loss of 0.52%, and strong adhesion (Grade 3). This work presents a green strategy for synthesizing high‐performance, environmentally friendly polyurethanes, reducing reliance on petroleum resources.
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Lun et al. (2025) studied this question.
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