Characteristics Of Natural Rubber

The performance characteristics of the natural rubber. Once the rubber is vulcanized it is a thermoset. Natural rubber isoprene has excellent dynamic properties.

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Raw rubber when heated to 130 c becomes soft and plastic.

Characteristics of natural rubber.

At low temperature rubber becomes stiff and when it frozen it attains fibrous structure. 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. Technically speaking natural rubber is an elastomer or an elastic hydrocarbon polymer.

2 natural rubber is a crystalline rubber crystals formed under external force stretching. This latex rubber is mainly found in countries like brazil india indonesia malaysia and sri lanka. Most rubber in everyday use is vulcanized to a point where it shares properties of both. However it does not do well with petroleum oils sunlight and ozone.

Polyacrylate is used in applications such as transmissions or anything where there is petroleum oils and high temperature. The plasticity can be varied within certain ranges by chemicals. Highly resistant to ozone and weathering. Natural rubber is an elastomer and a thermoplastic.

Has good flexibility its elastic modulus of 3 6mpa. 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. Some natural rubber sources such as gutta percha are composed of trans 1 4 polyisoprene a structural isomer that has similar properties. Physical properties of crude natural rubber.

I e if it is heated and cooled it is degraded but not destroyed.

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