Effect of thermal stresses on the EMI (electromagnetic interference) shielding of conductive plastics
The electrical properties of a number of filled and coated plastics were examined after subjecting the materials to rigorous thermal cycling between -20 and 80 C. Filled compounds that obtained their conductivity through the addition of carbon based conductive fillers maintained their conductivity throughout the thermal cycling. Compositions which contained metal fillers were able to maintain their conductivity only when a high temperature thermally stable polymer was used as the polymer matrix. Plaques coated by a zinc arc spray or with acrylic paints containing graphite, silver, and nickel particles were unaffected by thermal cycling. Plaques coated with an acrylic paint containing copper particles lost most of their conductivity during the changes in sample temperature. 10 references.
- Research Organization:
- Battelle Columbus Labs., OH
- OSTI ID:
- 5587244
- Journal Information:
- Poly. Compos.; (United States), Vol. 7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
REINFORCED PLASTICS
ELECTRICAL PROPERTIES
CARBON FIBERS
COMPOSITE MATERIALS
ELECTRIC CONDUCTIVITY
NICKEL
THERMAL CYCLING
THERMAL STRESSES
ELEMENTS
FIBERS
MATERIALS
METALS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PLASTICS
REINFORCED MATERIALS
STRESSES
SYNTHETIC MATERIALS
TRANSITION ELEMENTS
360404* - Materials- Polymers & Plastics- Physical Properties- (-1987)