RHEOLOGICAL AND PHYSICAL PROPERTIES OF DECROSS-LINKED POLYETHYLENE FOAMS USING EXTRUDER

摘要

Recycling of thermosetting polymers such as crosslinked polyethylene have been taken a great attention because of deep consideration of prevention of environmental pollution and of resource conservation over the world. However, even this moment, most industrial wastes of crosslinked polymers are burned as fuel or disposed of in landfills because they are difficult to process into other useful material due to their low fluidity and poor moldability. Although there are some ways to recycle the waste XLPE such as thermal recycling, thermal decomposition and blending, these methods are not economical compared with material recycling. In this report, we investigated a thermo-plasticization method to recycle irradiation crosslinked polyethylene foam by using a continuous supercritical single screw extruder and reported the relationships between the rheological and physical properties of the decross-linked polyethylene.