The influence of wax content on the physical properties of low-density polyethylene-wax blends

摘要

The influence of wax content on the thermal mechanical and viscoelatic properties of low-density polymethylene (LDPE)-oxidized wax miscible blends have been investigated.It was found that small concentration of wax improved physical properties such as thermal stability,elastic modulus and yield stress.At higher concentrations,however,due to crystal phase separation,wax deteriorates the thermal as well as the mechanical properties.It was also shown that a formerly established two-process model fro the stress relaxation in semicrystalline polymers could be used for the explanation of viscoelastic behaviour of the blends.