US EPA

7448496 

Journal Article 

Abrasive erosion of polyurethane 

Zhang, SW; He, RY; Wang, DG; Fan, QY 

2001 

Yes 

Journal of Materials Science
ISSN: 0022-2461
EISSN: 1573-4803 

36 

20 

5037-5043 

English 

10.1023/A:1011814506377 

WOS:000172237100026 

http://link.springer.com/10.1023/A:1011814506377
Exit
 

The surface physical and chemical effects of abrasive erosion of polyurethane in three different fluids (H2O, polyacrylamide and NaOH) containing quartz particles have been investigated respectively. The surface profiles, elements constitutions, binding energies and functional groups of polyurethane surfaces before and after abrasive eroding have been analyzed with scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectrometer (FT-IR). The surface physical effects of the abrasive erosion process were found to be microcutting, high-cycle fatigue and plastic fracture. The surface chemical effects turned out to be mechanical rupture of macromolecular chains, thermal decomposition of the allophanate groups and the biuret groups, hydrolysis of carbamate groups, and surface oxidative degradation. 

Fatigue of materials; Fourier transform infrared spectroscopy; Fracture; Hydrolysis; Oxidation; Pyrolysis; Scanning electron microscopy; Surface properties; Surface treatment; Wear resistance; X ray photoelectron spectroscopy; Abrasive erosion; Elements constitutions; Polyacrylamide; Sodium hydroxide; Polyurethanes