工艺技术

光固化PUA/SiO2复合树脂的制备与性能研究

  • 蔡瑞杰 ,
  • 吴德敏 ,
  • 蔡党润 ,
  • 孙踊壮 ,
  • 鲍泽农 ,
  • 张胜文
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  • 江南大学化学与材料工程学院,江苏无锡214122

网络出版日期: 2026-03-31

Preparation and Properties of UV-curable PUA/SiO2 Composite Resin

  • CAI Ruijie ,
  • WU Demin ,
  • CAI Dangrun ,
  • SUN Yongzhuang ,
  • BAO Zenong ,
  • ZHANG Shengwen
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  • School of Chemistry and Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China

Online published: 2026-03-31

摘要

【目的】改善光固化聚氨酯的强度与柔韧性。【方法】使用 NN-二甲基丙烯酰胺(DMAA)对纳米 SiO2进行改性并与聚氨酯丙烯酸酯(PUA)复合,制备了 PUA/SiO2复合树脂。重点研究了改性 SiO2含量对 PUA树脂及复合膜微观结构和性能的影响。【结果】改性 SiO2均匀分散于 PUA基体中,且对 PUA树脂黏度影响较小。改性 SiO2含量为 5%时,复合膜力学性能显著提升,模量、拉伸强度、断裂伸长率分别达到 0. 55 GPa、20. 72 MPa、132. 49%(分别提升 27. 91%、67. 78%、27. 95%),同时保持较高透明性(透光率 91. 25%、雾度 4. 04%)。【结论】制备的光固化 PUA/SiO2复合树脂在高强度、高柔韧性、高透明性涂层与膜材料领域应用前景广阔。

本文引用格式

蔡瑞杰 , 吴德敏 , 蔡党润 , 孙踊壮 , 鲍泽农 , 张胜文 . 光固化PUA/SiO2复合树脂的制备与性能研究[J]. 涂料工业, 2026 , 56(6) : 24 -29 . DOI: 10.12020/j.issn.0253-4312.2025-367

Abstract

[Objective] In order to improve the strength and toughness of UV-curable polyurethane materials.[Methods] A PUA/SiO2 composite resin was prepared by compoundingpolyurethane acrylate(PUA)with nano-silica(SiO2)surface-modified by N,N-dimethylacrylamide(DMAA). The effects of modified SiO2 content on the microstructure and properties of PUA resins andits films were investigated systematically.[Results]The modified SiO2 nanoparticles were uniformlydispersed in PUA matrix and had a slight influence on the viscosity of PUA resin. The mechanicalproperties of composite film were significantly improved at a modified SiO2 content of 5%. The modulus, tensile strength and elongation at break reached 0. 55 GPa,20. 72 MPa,and 132. 49%(representingincreases of 27. 91%,67. 78% and 27. 95%),respectively,while high transparency was maintained with a light transmittance of 91. 25% and a haze of 4. 04%.[Conclusion]The above composite resin features high strength,high toughness,and high transparency,thus exhibiting broad application prospects in the field of coatings and film materials.
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