Characteristics Of Natural Rubber

Most rubber in everyday use is vulcanized to a point where it shares properties of both.
Characteristics of natural rubber. At low temperature rubber becomes stiff and when it frozen it attains fibrous structure. The plasticity can be varied within certain ranges by chemicals. The performance characteristics of the natural rubber. Raw rubber when heated to 130 c becomes soft and plastic.
Natural rubber is an elastic substance obtained from the latex sap of trees especially those trees which belong to the genera hevea and ficus. Physical properties of crude natural rubber. Natural rubber isoprene has excellent dynamic properties. Once the rubber is vulcanized it is a thermoset.
Natural rubber is an elastomer and a thermoplastic. This latex rubber is mainly found in countries like brazil india indonesia malaysia and sri lanka. 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.
Has good flexibility its elastic modulus of 3 6mpa. However it does not do well with petroleum oils sunlight and ozone. Highly resistant to ozone and weathering. Polyacrylate is used in applications such as transmissions or anything where there is petroleum oils and high temperature.
2 natural rubber is a crystalline rubber crystals formed under external force stretching.