Home / Technical Support / Comparative Analysis of Polymer Flexible Anodes and Traditional Materials
Sep. 21, 2025
From a materials science perspective, significant differences exist between polymer flexible anodes and high-silicon cast iron anodes or mixed metal oxide anodes. Conductive polymer materials utilize polyolefinmatrix doped with carbon black, graphite and other conductive media, with volume resistivity controllable within 10-100 Ω·cm. Compared to traditional metal anodes, their electrochemical efficiency improves by approximately 40%, with self-corrosion rate reduced below 0.1 kg/A·year.
Regarding engineering economics, although flexible anodes have higher per-unit length cost, their comprehensive benefits are significant: first, reducing excavation volume by over 30%, particularly suitable for urban pipeline renovation projects; second, eliminating deep well groundbed construction, reducing installation difficulty; third, extending maintenance cycles to 3-5 years, substantially lowering operational costs. Technical performance comparisons show that in environments with soil resistivity exceeding 100 Ω·m, flexible anode systems improve current distribution uniformity by over 60% compared to traditional solutions.
However, certain limitations exist: mechanical strength is lower than metal anodes, requiring protection against sharp impact; long-term operating temperature should not exceed 65°C; microbial degradation may occur in soil with high organic content. Therefore, anode selection should involve full lifecycle cost analysis, choosing optimal solutions based on specific environmental parameters. This technology has been incorporated into ISO 15589-2 Appendix B, becoming an important option for buried facility corrosion protection.
Email:dinore@di-nol.com
Whatsapp:+86 138 9245 5776
