Abstract:

       We prepared imitation tiles with polyurethane as adhesive and fly ash and CaCO₃ as filling.We also performed their mechanical performance test and SEM scanning analysis.Results show that the maximal rupture modulus of fly ash and CaCO₃ filled imitation tile of 3 300 N and 2 300 N, the maximal damage strength of 50 MPa and 35 Mpa, the minimal wear resistance volume of 289 mm³ and 445 mm³ and the minimal water absorption rate of 0.95% and 0.85% are reached when filling content and forming strength are 72%~78% and 21~109 MPa.The synthetical enhancement effect of fly ash is better than that of CaCO₃.

Key words: polyurethane, imitation tile, fly ash, CaCO3