Accession Number:

AD0656196

Title:

HEAT AGING STUDIES OF CHEMICALLY CROSS-LINKED POLYETHYLENE,

Descriptive Note:

Corporate Author:

UNION CARBIDE CORP NEW YORK PLASTICS DIV

Personal Author(s):

• Tarbox,A. E.

Report Date:

1960-01-01

Pagination or Media Count:

30.0

Abstract:

Chemically cross-linked polyethylene without sufficient antioxidant degrades on heat aging, losing its tensile properties, compression cut-through resistance, flexibility at low temperatures, appearance and electrical properties. This material can be protected, however, with antioxidants to retain sufficient physical and electrical properties to become serviceable over a wide range of temperatures up to 136 deg. C. At least .5 of antioxidant per 100 parts of resin is considered necessary to accomplish this protection against heat aging. Additional testing must be conducted to determine the upper limits of antioxidant addition in order to predict longer continuous service use at elevated temperatures. The future for chemically cross-linked polyethylene is encouraging and the characteristics of this material are such that it should find use as electrical insulation in many areas where wires and cables are subject to abnormal temperatures. Author

Descriptors:

• *POLYETHYLENE PLASTICS
• AGING(MATERIALS)
• CROSSLINKING(CHEMISTRY)
• ANTIOXIDANTS
• ADDITIVES
• ELECTRICAL INSULATION
• TEMPERATURE
• TENSILE PROPERTIES
• COMPRESSIVE PROPERTIES
• MECHANICAL PROPERTIES
• DEGRADATION

Subject Categories:

• Miscellaneous Materials
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE