Crosslinkable polymer compounds for lead wire insulation, gaskets and liners in a refrigeration environment
AssigneeChamplain Cable Corporation
InventorStefan Ultsch
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Abstract
Insulation compounds are described that have been formulated for use in a refrigeration environment. The materials consist of crosslinkable compounds made from ionomer (EAS), polyether block amide (PEBA), polybutyleneterephthalate (PBT) homo- or copolymers, and/or polyvinylidenefluoride (PVDF). The insulation compounds are intended for use as wire insulation and in the fabrication of gaskets and liners. The compounds show superior resistance to refrigerants such as HCFC-22, HCFC-123, and HFC-134a. Crosslinking provides resistance to creeping under heat and pressure.
Claims6
A melt extrudable, crosslinkable polymer insulation composition for use in a refrigeration environment, comprising:
- a) approximately 50 to 100 vol % of at least one ionomer, and
- b) approximately 0 to 50 vol % of polyether block amides consisting of linear chain rigid polyamide segments interspaced with flexible polyether segments, and wherein (a) and (b) are cross-linked to provide a polymer insulation that withstands a harsh refrigeration environment.
Dependencies are inferred from the claim text.