The physical properties of crude natural rubber are indicated below.
Characteristics of natural rubber.
Most rubber in everyday use is vulcanized to a point where it shares properties of both.
At low temperature rubber becomes stiff and when it frozen it attains fibrous structure.
Highly resistant to ozone and weathering.
Natural rubber is an elastic substance obtained from the latex sap of trees especially those trees which belong to the genera hevea and ficus.
I e if it is heated and cooled it is degraded but not destroyed.
The performance characteristics of the natural rubber.
This latex rubber is mainly found in countries like brazil india indonesia malaysia and sri lanka.
Some natural rubber sources such as gutta percha are composed of trans 1 4 polyisoprene a structural isomer that has similar properties.
Polyacrylate is used in applications such as transmissions or anything where there is petroleum oils and high temperature.
Once the rubber is vulcanized it is a thermoset.
Physical properties of crude natural rubber.
Natural rubber is made up of solid particles suspended in a milky white liquid called latex that drips from the bark of certain tropical and subtropical trees.
Natural rubber is an elastomer and a thermoplastic.
Natural rubber isoprene has excellent dynamic properties.
The plasticity can be varied within certain ranges by chemicals.
Technically speaking natural rubber is an elastomer or an elastic hydrocarbon polymer.
However it does not do well with petroleum oils sunlight and ozone.