INSULATING RUBBER COMPOSITION

PROBLEM TO BE SOLVED: To provide an insulating rubber composition for forming a cold shrinking tube suitable for cable connector (including terminal connector portions) members. SOLUTION: This insulating rubber composition is obtained by blending 100 pts.wt. of an ethylene-propylene rubber mainly co...

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Bibliographic Details
Main Authors SHIMAZAKI MITSUO, ABE HIROYUKI, TANABE KOICHI, KURITA KOZO
Format Patent
LanguageEnglish
Published 05.03.1999
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
CABLES
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
CONDUCTORS
ELECTRICITY
INSULATORS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PROBLEM TO BE SOLVED: To provide an insulating rubber composition for forming a cold shrinking tube suitable for cable connector (including terminal connector portions) members. SOLUTION: This insulating rubber composition is obtained by blending 100 pts.wt. of an ethylene-propylene rubber mainly consisting of an ethylene- propylene-diene copolymer having a propylene content of from 35 to 55 wt.% and the weight average molecular weight/number average molecular weight ration of over 5 with a total of 40-120 pts.wt. of calcium carbonate and aluminum hydroxide, 10-90 pts.wt. of paraffin oil, 1-20 pts.wt. of carbon black and 0.5-5 pts.wt. of an organic peroxide. The insulating rubber composition possesses good electrical characteristics and an excellent processability for forming a cold shriking tube. A cold shrinking tube formed is excellent in elongation set characteristics, elongation characteristics and tracking resistance.
Bibliography:Application Number: JP19970226322