Everything about Rubber Technology totally explained
Rubber technology is the subject dealing with the transformation of
rubbers or
elastomers into useful products, such as
automobile tires.The materials includes
latex,
natural rubber,
synthetic rubber and other polymeric materials, such as
thermoplastic elastomers.
Vulcanization
Most rubber products are
vulcanized, a process which involves heating with a small quantity of sulphur (or equivalent
cross-linking agent so as to stabilise the polymer chains, over a wide range of temperature. This discovery was made by
Charles Goodyear in the 1844, but is a process restricted to polymer chains having a
double-bond in the backbone. Such materials include
natural rubber and
polybutadiene. The range of materials available is much wider however, since all polymers become elastomeric above their
glass transition temperature. However, the elastomeric state is unstable because chains can slip past one another resulting in
creep or
stress relaxation under static or dynamic load conditions. Chemical cross links add the stability to the network that's needed for most practical applications.
Processing of Rubber
Methods for processing rubber include
mastication and
calendering, both processes being essential to bring crude rubber into a state suitable for shaping the final product. The former breaks down the polymer chains, and lowers their
molecular weight so that
viscosity is low enough for further processing. After this has been achieved, various additions can be made to the material ready for cross-linking.
Further Information
Get more info on 'Rubber Technology'.
|
External Link Exchanges
Do you know how hard it is to get a link from a large encyclopaedia? Well we're different and will prove it. To get a link from us just add the following HTML to your site on a relevant page:
<a href="http://rubber_technology.totallyexplained.com">Rubber technology Totally Explained</a>
Then simply click through this link from your web page. Our crawlers will verify your link, extract the title of your web page and instantly add a link back to it. If you like you can remove the words Totally Explained and embed the link in article text.
As long as your link remains in place, we'll keep our link to you right here. Please play fair - our crawlers are watching. Your site must be closely related to this one's topic. Any kind of spamming, dubious practises or removing the link will result in your link from us being dropped and, potentially, your whole site being banned. |
