Trace Copper Ion Chelation Efficiency at Extrusion Temperatures Exceeding 200°C
Effective metal deactivation in copper cable insulation requires precise chelation of trace copper ions that catalyze polymer degradation. Our Antioxidant 1024 serves as a direct drop-in replacement for BASF Irganox MD 1024, maintaining identical chelation kinetics while optimizing supply chain reliability. The N,N'-bis(3,5-di-butyl-4-hydroxyphenylpropionyl)hydrazine structure provides robust coordination with copper ions, preventing oxidative chain scission in PE and XLPE matrices. The chelation mechanism involves the coordination of copper ions with the hydroxyl and hydrazine functional groups, forming stable complexes that sequester the metal from the polymer matrix. This prevents the redox cycling of copper that accelerates hydroperoxide decomposition.
Field engineering analysis reveals a critical edge-case behavior during high-temperature extrusion. When processing temperatures consistently exceed 205°C with residence times approaching 4 minutes, the hydrazine linkage can experience thermal stress. This does not significantly reduce the assay value but can generate trace low-molecular-weight volatiles. In high-voltage insulation applications, these volatiles may contribute to micro-void formation or
