Question

B) Explain why the sidewalls of your polyisoprene tires crack faster in LA or Denver than say Flagstaff or San Luis Obispo. Note: if you had tires made of polyurethane (Estane) or polyisobutylene (Butyl rubber) you wouldn't be seeing those cracks ?

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Answer the question in clear words and in very good description!!! Please type your answer. Thanks

Answer 1

Outer rubbersidewall layers comprising a natural cis plyisoprene and polybutadiene. these considerable dynamic distortion and flexing abrasion due to scuffing fatigue cracking and weathering such as example ozone aging.

pneumatic rubber tyres conventionally have relatively thin ,atmospherically exposed.

ESTANE AND POLYISOBUTYLENE

THESE HAVE GOOD FLEX PROPERTIES.

OZONE RESISTANCE and CUT GROWTH RESISTANCE and outstanding resistance to heat,aging,weathering,chemical attack,flexing,abrasion.