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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
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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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Keywords:
- Nanosilica,
- Waterborne,
- Polyurethanes,
- Property
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