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林产化学与工业

林产化学与工业 ›› 2014, Vol. 34 ›› Issue (5): 122-126.doi: 10.3969/j.issn.0253-2417.2014.05.020

• 研究报告 • 上一篇    下一篇

环氧树脂复合富马海松酸改性水性聚氨酯的合成及性能研究

刘鹤, 徐徐, 商士斌, 宋湛谦   

  1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产化学工程重点开放性实验室;江苏省 生物质能源与材料重点实验室, 江苏 南京 210042
  • 收稿日期:2013-08-12 出版日期:2014-10-25 发布日期:2015-08-18
  • 作者简介:刘鹤（1981-），男，内蒙古通辽人，副研究员，博士，主要从事生物质资源利用研究；E-mail：liuheicifp@hotmail.com
  • 基金资助:
    国家自然科学基金资助项目（U1202265）

Synthesis and Properties of Fumaropimaric Acid-based Waterborne Polyurethane Modified by Epoxy Resin

LIU He, XU Xu, SHANG Shi-bin, SONG Zhan-qian   

  1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab.for Biomass Chemical Utilization;Key and Open Lab.of Forest Chemical Engineering, SFA;Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2013-08-12 Online:2014-10-25 Published:2015-08-18
  • Contact: 宋湛谦，研究员，博士生导师，研究领域为生物质资源利用；E-mail：songzq@hotmail.com E-mail:songzq@hotmail.com

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摘要： 以环氧树脂（E-51）和富马海松酸聚酯多元醇为原料，制备了环氧树脂复合富马海松酸改性水性聚氨酯，并探讨了环氧树脂E-51添加量对复合乳液和漆膜性能的影响。结果显示当E-51添加量为3 %时，漆膜的吸水率为10.2 %，拉伸强度为35.6 MPa，断裂伸长率为410.2 %，摆杆硬度为0.89。通过傅里叶红外光谱（FT-IR）、透射电镜（TEM）、差示扫描量热仪（DSC）及同步热分析仪（TGA）对样品的形态及结构进行了表征。结果表明：环氧树脂中的羟基和环氧基参与了反应，部分发生交联形成网络结构；随着环氧树脂添加量的增大，制备的复合乳液粒径增大，粒径分布变宽；同时改性后的复合漆膜的耐水性、热力学稳定性、力学性能及耐化学溶剂性增强。

关键词: 环氧树脂, 富马海松酸, 水性聚氨酯, 力学性能

Abstract: Fumaropimaric acid-based waterborne polyurethane (FWPU) emulsion modified by epoxy resin (EP) was synthesized. Influences of epoxy E-51 content on performances of emulsion and film were discussed. The results showed that when the content of E-51 was 3%, the tensile strength, water absorption, elongation at break and pendulum hardness of the film was 35.6 MPa, of 10.2%, of 410.2% and 0.89, respectively. The morphology and structure of the film and emulsion were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). It was verified by FT-IR analysis that the hydroxyl and epoxy groups in EP participated in reaction, and part of them formed network structure by crosslinking. The water resistance, thermal stability, mechanics performances and chemical resistance of films were improved with increase of EP content.

Key words: epoxy resin, fumaropimaric acid, waterborne polyurethane, mechanics performances

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