中国塑料 ›› 2025, Vol. 39 ›› Issue (12): 39-45.DOI: 10.19491/j.issn.1001-9278.2025.12.007

• 材料与性能 • 上一篇    下一篇

船舶用大豆油基聚氨酯涂层的制备与性能研究

刘运学(), 史息凡, 范兆荣, 谷亚新, 李香玉, 王晓丹   

  1. 沈阳建筑大学材料科学与工程学院,沈阳 110168
  • 收稿日期:2025-01-25 出版日期:2025-12-26 发布日期:2025-12-22
  • 作者简介:刘运学(1969-),男,山东青岛人,教授,硕士,主要从事高分子涂料、胶黏剂和建筑材料等方面的研究,13644004218@163.com

Preparation and performance of a soybean oil⁃based polyurethane coating for ships

LIU Yunxue(), SHI Xifan, FAN Zhaorong, GU Yaxin, LI Xiangyu, WANG Xiaodan   

  1. College of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,China
  • Received:2025-01-25 Online:2025-12-26 Published:2025-12-22

摘要:

以环氧大豆油与甲醇为原料在催化剂四氟硼酸的作用下制得大豆油基多元醇,然后与2,4⁃甲苯二异氰酸酯(TDI)反应制得大豆油基聚氨酯预聚体。采用傅里叶红外光谱对其微观结构进行表征。将聚氨酯预聚体涂在马口铁上,室温干燥7天后,对涂膜性能进行测试和表征,研究了n(—NCO)/n(—OH)(R值)与反应条件对涂膜接触角、物理性能和耐腐蚀性的影响。结果表明,当R值为2∶1,反应温度为70~75 ℃、反应时间为2 h时,得到的涂膜综合性能最佳。

关键词: 大豆油多元醇, 聚氨酯, 涂层, 性能

Abstract:

A soybean oil⁃based polyurethane prepolymer was synthesized by first reacting epoxidized soybean oil with methanol catalyzed by tetrafluoroboric acid, followed by reaction with 2,4⁃toluene diisocyanate. The chemical structure of the prepolymer was confirmed by Fourier⁃transform infrared spectroscopy. Coatings were prepared by applying the prepolymer onto tinplate substrates and curing at room temperature for seven days. The effects of the —NCO to —OH molar ratio (R value) and reaction conditions on the coating properties, including contact angle, physical properties, and corrosion resistance, were investigated. Results indicated that the coating prepared with an R value of 2∶1, a reaction temperature of 70~75 ℃, and a reaction time of 2 h exhibited the optimal comprehensive performance.

Key words: soybean oil polyol, polyurethane, coating, performance

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