Preparation and characterization of the waterborne polyurethane modified with nanosilica
- 852 Downloads
The nano-SiO2 is used to modify the waterborne polyurethane, and the morphology and performance of the waterborne polyurethane (are studied in) prepared by the in-suit polymerization method and the blending method. The properties and structure have been characterized by fourier transform infrared spectra (IR), differential scanning calorimetry (DSC), Thermal gravimetric (TG), transmittance electron microscopy (TEM) and Dynamical Mechanical Analysis(DMA). The experiment results show that, compared with the blending method, the in-suit polymerization has more advantages in that the nano-SiO2 is evenly dispersed in the waterborne polyurethane, obviously in microphase separation and better in resistance to high temperature and water.
KeywordsWaterborne polyurethane Nanosilica Composite
Differential Scanning Calorimetry
Dynamical Mechanical Analysis
Fourier Transform Infrared Spectra
Transmittance Electron Microscopy
The authors are grateful for the financial support from the Natural Science Foundation of Hubei Province in China (Grants 2006ABA174).
- 4.Hou MH, Liu WQ, Li Y, Chen JH (2005) Waterborne polyurethane doubly modified by montmorillonite and siloxane. Yingyong HuaxueChin 22:1132–1136Google Scholar
- 5.Hou MH, Liu WQ, Li Y, Chen JH (2005) Preparation and characterization of waterborne polyurethane/silane montmorillonite nanocomposite. Shiyou HuagongChin 34:677–680Google Scholar
- 8.Jeong HM, Jang KH, Cho K (2003) Properties of waterborne polyurethanes based on polycarbonate diol reinforced with organophilic clay, journal of macromolecular science. Physics B 42:1249–1263Google Scholar
- 14.Cong SF, Yu LR (2003) Polyurethane coating, firsted, chemistry industrial publisher ltd., Perkin. Chapter 11:288Google Scholar