Tensile strength and elongation of the rotor spun composite yarn

The tensile strength and elongation of three kinds of cotton/ polyurethane rotor spun composite yarn with different structures were investigated theoretically and experimentally.Both experimental results and theoretical analysis indicate that the tensile strength and elongation properties of the composite yarns depend not only on the components of the yarn but also on the yarn structure.The tensile strength of the core yarn is the highest,the second is the folded yarn,and the lowest is the wrapped yarn.However,the wrapped yarn has the highest elongation,the folded yarn has the lowest and the core yarn ranks between the two.