Citation: Xiao-hu Qiang, Li-bang Feng, Yan-ping Wang, Shun-hua Wang. EFFECT OF SILICA NANOPARTICLES ON PROPERTIES OF WATERBORNE POLYURETHANES[J]. Chinese Journal of Polymer Science, ;2012, 30(6): 845-852. doi: 10.1007/s10118-012-1175-6 shu

EFFECT OF SILICA NANOPARTICLES ON PROPERTIES OF WATERBORNE POLYURETHANES

Corresponding author: Li-bang Feng,
Received Date: 27 February 2012
Revised Date: 29 March 2012

Fund Project: 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).

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.
- Nanosilica,
- Waterborne,
- Polyurethanes,
- Property
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