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Effect of silica nanoparticles on properties of waterborne polyurethanes

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Abstract

Waterborne polyurethane composites containing silica nanoparticles are synthesized successfully via the in situ polymerization. The structure, thermal stability, surface hardness, tensile strength, UV-Vis absorbance, dynamic mechanical properties and chemicals resistance of the resulting composites are investigated by FTIR, TEM, TGA, UV-Vis, DMA and chemicals soakage measurements. Results show that polyurethane molecules and silica nanoparticles are linked with covalent bonds. As a result, physical properties of polyurethane composites, such as thermal stability, surface hardness, weather and chemicals resistance are all improved when an appropriate concentration of silica nanoparticles are incorporated.

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Authors and Affiliations

  1. Key Laboratory of Road Bridge and Underground Engineering of Gansu Province, Lanzhou Jiaotong University, Lanzhou, 730070, China

    Li-bang Feng  (冯利邦), Yan-ping Wang & Xiao-hu Qiang

  2. School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China

    Li-bang Feng  (冯利邦), Yan-ping Wang, Xiao-hu Qiang & Shun-hua Wang

Authors
  1. Li-bang Feng  (冯利邦)
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  2. Yan-ping Wang
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  3. Xiao-hu Qiang
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  4. Shun-hua Wang
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Corresponding author

Correspondence to Li-bang Feng  (冯利邦).

Additional information

This work was financially supported by the Open Fund of Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province (No. Kfjj-10-05), and “Qing Lan” Talent Engineering Funds by Lanzhou Jiaotong University (No. QL-08-03A).

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Feng, Lb., Wang, Yp., Qiang, Xh. et al. Effect of silica nanoparticles on properties of waterborne polyurethanes. Chin J Polym Sci 30, 845–852 (2012). https://doi.org/10.1007/s10118-012-1175-6

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  • DOI: https://doi.org/10.1007/s10118-012-1175-6

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