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首页> 外文期刊>ACS Omega >Synthesis and Properties of UV-Curable Polyfunctional Polyurethane Acrylate Resins from Cardanol
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Synthesis and Properties of UV-Curable Polyfunctional Polyurethane Acrylate Resins from Cardanol

机译：腰果酚可紫外线固化的多官能聚氨酯丙烯酸酯树脂的合成及性能

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摘要

A novel UV-curable polyurethane acrylate (PUA) oligomer was synthesized by modifying cardanol with a polyfunctional acrylate precursor obtained through reacting pentaerythritol triacrylate with isophoronediisocyanate. Chemical structures of the obtained cardanol-based PUA (C-PUA) oligomer were confirmed by Fourier transform infrared and 1H NMR. Subsequently, viscosity and gel content of the C-PUA resins containing different quantities of hydroxymethyl methacrylate (HEMA) were characterized. The C-PUA oligomer possessed a viscosity of 8360 mPa s, which reduced to 115 mPa s when 40% of the HEMA diluent was added. Furthermore, thermal, mechanical, coating, and swelling properties of the resulting UV-cured C-PUA/HEMA materials were investigated. The ultimate biomaterials showed excellent performance, including a glass transition temperature (Tg) of 74–123 °C, maximum thermal degradation temperature of 437–441 °C, tensile strength of 12.4–32.0 MPa, tensile modulus of 107.2–782.7 MPa, and coating adhesion of 1–2. In conclusion, the developed C-PUA resins show great potential to be applied in UV-curable materials like coatings.
机译：通过用季戊四醇三丙烯酸酯与异佛尔酮二异氰酸酯反应获得的多官能丙烯酸酯前体对腰果酚进行改性，合成了一种新型的紫外线可固化聚氨酯丙烯酸酯低聚物。通过傅立叶变换红外光谱和1 H NMR确认得到的腰果酚基PUA（C-PUA）低聚物的化学结构。随后，表征了包含不同量的甲基丙烯酸羟甲酯（HEMA）的C-PUA树脂的粘度和凝胶含量。 C-PUA低聚物的粘度为8360 mPa s，当添加40％的HEMA稀释剂时粘度降低至115 mPa s。此外，研究了所得的紫外线固化的C-PUA / HEMA材料的热，机械，涂层和溶胀性能。最终的生物材料表现出优异的性能，包括74-123°C的玻璃化转变温度（Tg），最大热降解温度437-441°C，抗张强度12.4-32.0 MPa，抗张模量107.2-782.7 MPa和涂层的附着力为1-2。总之，已开发的C-PUA树脂显示出巨大潜力，可用于涂料等UV可固化材料中。

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