Natural rubber, synthetic rubber & neoprene.

Jorge Godínez Leal y Bruno Moral Delgado1º A

Natural Rubber

What is it?

Polymers of isoprene.

With minor impurities.

And water.

Origin and history

Origin: South America.

Seeds were brought to Europe in the XIXcentury.

Small plants were sent to some SouthernAsian countries.

Current sources: Brazil, Malaysia, Congo…

Properties

Easily oxidized by air.

Sensitive to heat.

Soft.

Elastic.

Uses

Rubber tubes.

Shoe soles & door stoppers.

Rubber bands.

Rubber hoses and rubber caps.

Synthetic rubber

What is it?

Elastomer, more elastic under stress thanothers.

Can return to previous size after stress.

Substitute of natural rubber.

Origin and history

Bouchardat created a type in 1897.

Fritz Hofmann obtained first syntheticrubber in 1909.

It take a big demand in vehicles.

Properties

Resistant again heat and flames.

Flexible in low temperatures.

Electricity and heat insulator

Resistant to wear aging.

Uses

To form:

Tyres of vehicles.

Adhesive tapes.

Hoses.

Shoe soles.

Wire and cable insulation.

Neoprene

What is it?

Type of synthetic rubber.

It have a lot of applications.

Is the rubber with more uses.

Origin and history

Invented by company DuPont.

First rubber produced in comany scale.

Obtained from synthetic rubber.

Properties

Very flexible.

High durability.

Fire, fat, oil, sun light and water salinity resistant.

It’s corroded by the sun and rain.

Serious pollution effects.

Uses

Pipes.

Leashes.

Gloves.

Sleeping bags.

Hoses.

Wetsuits.

The End