Characteristics Of Natural Rubber

Natural rubber is an elastomer and a thermoplastic.

Characteristics of natural rubber.

At low temperature rubber becomes stiff and when it frozen it attains fibrous structure. Physical properties of crude natural rubber. Has good flexibility its elastic modulus of 3 6mpa. Highly resistant to ozone and weathering.

Most rubber in everyday use is vulcanized to a point where it shares properties of both. Polyacrylate is used in applications such as transmissions or anything where there is petroleum oils and high temperature. I e if it is heated and cooled it is degraded but not destroyed. 2 natural rubber is a crystalline rubber crystals formed under external force stretching.

Some natural rubber sources such as gutta percha are composed of trans 1 4 polyisoprene a structural isomer that has similar properties. The plasticity can be varied within certain ranges by chemicals. This latex rubber is mainly found in countries like brazil india indonesia malaysia and sri lanka. However it does not do well with petroleum oils sunlight and ozone.

Technically speaking natural rubber is an elastomer or an elastic hydrocarbon polymer. Natural rubber is an elastic substance obtained from the latex sap of trees especially those trees which belong to the genera hevea and ficus. The physical properties of crude natural rubber are indicated below. Natural rubber isoprene has excellent dynamic properties.

Once the rubber is vulcanized it is a thermoset.