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CAOUTCHOUC ISOBUTYLENE [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2008-02-06

English

Subject field(s)
  • Rubber
DEF

A synthetic elastomer produced by catalytic copolymerization of isobutene (isobutylene) with no more than 3% of isoprene; the latter is necessary to permit vulcanization with sulfur-accelerator systems.

OBS

It is superior to natural rubber in resistance to attack by oxygen and ozone, in dielectric strength, and particularly in [its] ability to retain inner gases, a property which makes it valuable as an inner lining for tubeless tires.

CONT

Isobutylene Isoprene Rubber (IIR). Butyl is a common term used for the isobutylene isoprene elastomer. As the name implies, butyl is comprised of isobutylene with a small amount of isoprene. It is known for its excellent resistance to water, steam, alkalis, and oxygenated solvents. Another outstanding characteristic is low gas permeation. Butyl is capable of providing high energy absorption (dampening) and good hot tear strength.

Key term(s)
  • isobutylene-isoprene rubber
  • GRI

French

Domaine(s)
  • Caoutchouc
DEF

Copolymère de l'isobutène et du butadiène.

OBS

Les butylcaoutchoucs les plus courants renferment environ 2 % d'isoprène. [...] leur exceptionnelle imperméabilité aux gaz, très supérieure à celle du caoutchouc naturel, [...] est la propriété la plus remarquable des butylcaoutchoucs. Ils constituent la matière première de la quasi-totalité des chambres à air des pneumatiques utilisés dans l'aviation et l'automobile.

OBS

caoutchouc butylique : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

Key term(s)
  • caoutchouc butyl

Spanish

Campo(s) temático(s)
  • Caucho
DEF

Copolímero de 97% de isobutileno y 3% de isopropeno. Resistente a la abrasión, a la luz solar y al envejecimiento. Impermeable a gases. Amortigua golpes y vibraciones. Soporta la combustión.

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