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High Temperature Polymeric Wire Insulation
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English
Abstract
The need for high temperature resistant polymeric wire insulation is recognized by the military/aerospace community and industrial companies. Dual use applications are here today for new polymeric coated or wrapped film wire insulation materials suitable for continuous or intermittent performance at ≥300°C. The new materials are necessary to replace state-of-the-art polyimide polymers such as KaptonR and fluorocarbon resins such as TeflonR and its derivatives. These existing and qualified insulation materials are generally limited to ≤250°C service and are not capable of meeting existing or emerging needs for higher temperature capable polymers suitable for highly demanding power generation and distribution applications.
TRW conducted an investigation under USAF sponsorship beginning in 1988 and concluding in 1991 on Contract F33615-88-C-2909 to identify and evaluate polymeric wire insulation candidates suitable for ≥300°C service. Five advanced polymeric materials were studied in this work employing Kapton as the control insulation material. The results of this work clearly demonstrated that two polymeric materials, Partially Fluorinated Polyimide (PFPI) and UpilexR S polyimide were vastly superior to Kapton in thermal-oxidative stability and retention of superior electrical properties at 300°C. Significant performance improvement of PFPI and Upilex S over Kapton were also determined for moisture, ultraviolet light and basic media exposure resistance.
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Authors
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Citation
Jones, R., "High Temperature Polymeric Wire Insulation," SAE Technical Paper 941187, 1994, https://doi.org/10.4271/941187.Also In
References
- Wright Laboratory Report No. WL-TR-91-2105 February 1992
- Hofer D. C. “Polyimides in Packaging for Electronics,” Proceedings of the ACS-sponsored Polyimide Symposium Reno, Nevada August 1987
- TRW
- “Pyralin R Polyimides,” E. I. DuPont De Nemours and Company Wilmington, Delaware
- “SIXEF R Polymers,” Hoechst-Celanese Corporation, Specialty Products Group Coventry, Rhode Island
- “UPILEX R Polyimide Film,” ICI Films Wilmington, Delaware
- “KAPTON R Polyimide Film,” E. I. DuPont De Nemours and Company Wilmington, Delaware
- TRW