Characteristics Of Natural Rubber
Some natural rubber sources such as gutta percha are composed of trans 1 4 polyisoprene a structural isomer that has similar properties.
Characteristics of natural rubber. Natural rubber is an elastomer and a thermoplastic. 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. Technically speaking natural rubber is an elastomer or an elastic hydrocarbon polymer. The performance characteristics of the natural rubber.
The plasticity can be varied within certain ranges by chemicals. Most rubber in everyday use is vulcanized to a point where it shares properties of both. The physical properties of crude natural rubber are indicated below. Once the rubber is vulcanized it is a thermoset.
Polyacrylate is used in applications such as transmissions or anything where there is petroleum oils and high temperature. However it does not do well with petroleum oils sunlight and ozone. Has good flexibility its elastic modulus of 3 6mpa. At low temperature rubber becomes stiff and when it frozen it attains fibrous structure.
I e if it is heated and cooled it is degraded but not destroyed. Natural rubber isoprene has excellent dynamic properties. 2 natural rubber is a crystalline rubber crystals formed under external force stretching. Raw rubber when heated to 130 c becomes soft and plastic.
This latex rubber is mainly found in countries like brazil india indonesia malaysia and sri lanka.