Degradable epoxy thermosetting materials for electrical insulation: dynamic network, dielectric reliability, and recycling strategies

Research Overview

According to the study published in Progress in Organic Coatings, Volume 222, Part A (January 2027), authors Zhongbing Duan, Hui Zhong, Li Zhang, I.U. Rakhmonov, and N.N. Kurbonov proposed a reliability oriented design approach for biodegradable epoxy thermosetting materials used in electrical insulation, covering three levels: dynamic networks, dielectric reliability, and recycling strategies. This study discusses the degradability of materials and the reliability of electrical insulation within the same framework, providing a new design perspective for the performance maintenance and post retirement treatment of thermosetting materials under long-term service conditions.

Dynamic Networks and Dielectric Reliability

Epoxy thermosetting materials are widely used in the field of electrical insulation, but once their cross-linked networks are formed, they are difficult to reshape and recycle.

. This study focuses on dynamic network design, attempting to endow materials with the ability to be reprocessed or degraded while maintaining insulation performance. For the polymer additive industry, this direction intersects with polymer aging and stabilization technology: dynamic networks may undergo structural rearrangement under the influence of thermal, electrical, and environmental factors, and their long-term stability, weather resistance, and ability to maintain dielectric properties all need to be evaluated during the formulation and processing stages. The dielectric reliability mentioned in the study actually refers to the problem of performance degradation of materials under the combined action of electric field and aging stress, which is similar in methodology to the degradation mechanisms of antioxidant systems and photo stable systems.

The industry significance of recycling strategies

Research considers recycling strategies as part of reliability design, rather than as a remedial measure after the fact.

. This approach has implications for the application of polymer additives: in degradable or recyclable thermosetting systems, the selection of stabilizing additives needs to balance the protective effect during service life with the requirements for depolymerization or reprocessing after retirement. The migration, compatibility, and synergistic behavior of traditional HALS, UVA, and antioxidant systems in thermosetting matrices may change due to the presence of dynamic networks; The design of complex systems also requires a re examination of their distribution and efficiency in reversible crosslinking environments. Although this study focuses on electrical insulation scenarios, its discussion on dynamic networks and dielectric reliability provides a valuable framework for the study of the adaptability of stabilization agents in new recyclable thermosetting materials.

Implications for Aging and Stabilization Technology

From a technical insight perspective, the value of this study lies in moving the recycling issue at the end of material life to the design stage, which is consistent with the emphasis on full lifecycle performance management in the field of polymer aging and stabilization.

. For practitioners engaged in the development of antioxidant systems, photostable systems, and composite systems, the emergence of degradable epoxy thermosetting materials means that stabilization schemes need to face more complex matrix chemical environments: the presence of dynamic bonds may alter the pathways of free radical capture, hydrogen peroxide decomposition, and other processes, and may also affect the shielding efficiency of UVA and the regeneration cycle of HALS. The study did not provide specific additive formulations or aging data, but its proposed reliability oriented design logic deserves further attention in research related to weather stability and processing stability.

Conclusion

Overall, this study integrates dynamic networks, dielectric reliability, and recycling into a unified design framework, providing ideas for the sustainable development of epoxy thermosetting materials for electrical insulation.

. For the polymer additive industry, its significance lies not in providing ready-made stabilization solutions, but in reminding that with the development of degradable and recyclable thermosetting systems, the design of antioxidant systems and photostable systems needs to simultaneously consider service reliability and end treatment requirements, and the evaluation dimensions of compounding systems should also be expanded accordingly.

Information source:Reliability-driven design of degradable epoxy thermosets for electrical insulation: Dynamic networks, dielectric reliability, and circular recycling strategies， Organized by Herun Chemical.