Re: Automobile tires and friction

[Bernard Cleyet <anngeorg@PACBELL.NET>]

It destructs (as in destructive distillation in a vacuum) before it
melts?

What is the nature of the melting of poly methyl methacrylate?   Or are
you implying it never solidifies (like glasses).

bc who's curious and too lazy to research in my materials texts


John Barrer wrote:

> Tires do not melt when heated (moderately); rather
> they soften. Vulcanized rubber is a cross-linked
> structure that cannot "melt" unless some of the
> cross-links (vulcanization sites) or other chemical
> bonds are broken, so the prospect of a liquid rubber
> layer seems pretty remote. John Barrere
>
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