Study on the performance of Nano-CaCO_3 and LLDPE based artificial turf fibers

摘要

In this paper, a new type of LLDPE/nano CaCO_3 composite based artificial turf yarns with good tensile property and UV resistance is introduced. The effect of nano CaCO_3 content on tensile properties shows that the tensile force reached the maximum value when the CaCO_3 content is about 7wt%, and the elongation at break gets to the highest point at 10wt%. After 3000h UV accelerated aging, the nano-CaCO_3 and LLDPE based artificial turf fiber yarns has tensile strength retention about 87%, and the elongation at break is higher than LLDPE. DSC results shows that with the increase of nano-CaCO_3 content, the crystallization temperature gradually increased, and the crystallinity degree declined. SEM images of cross sections of monofilament fibers show that nano CaCO_3 had a good dispersion in monofilament fiber matrix. These reasons give rise to the improved mechanical properties of turf yarns.