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Natural Rubber Cup lumps At Competitive Price

Natural Rubber Cup lumps At Competitive Price

450 ~ 500 / Metric Ton

|

Minimum Order

Place of Origin:

-

Price for Minimum Order:

Minimum Order Quantity:

40 Metric Ton

Packaging Detail:

50 KG BAGS

Delivery Time:

25-28 days

Supplying Ability:

1000 Metric Ton per Month

Payment Type:

T/T, Western Union, Money Gram

الاتصال الآن
عضو مجاني

الشخص الذي يمكن الاتصال به Mr. smtsstockandsuppliestrading

Stonemill Office Park, Greenstone House, 300 Acacia Road, Darrenwood, Johannesburg, Gauteng

الاتصال الآن

Description

 

Natural rubber is obtained from the milky secretion (latex) of various plants, but the only important commercial source of natural rubber (sometimes called Par rubber) is the tree Hevea brasiliensis. The only other plant under cultivation as a commercial rubber source is guayule ( Parthenium argentatum ), a shrub native to the arid regions of Mexico and the SW United States. To soften the rubber so that compounding ingredients can be added, the long polymer chains must be partially broken by mastication, mechanical shearing forces applied by passing the rubber between rollers or rotating blades. Thus, for most purposes, the rubber is ground, dissolved in a suitable solvent, and compounded with other ingredients, e.g., fillers and pigments such as carbon black for strength and whiting for stiffening; plasticizers, usually in the form of oils, waxes, or tars; accelerators; and vulcanizing agents. The compounded rubber is sheeted, extruded in special shapes, applied as coating or molded, then vulcanized. Most Par rubber is exported as crude rubber and prepared for market by rolling slabs of latex coagulated with acid into thin sheets of crepe rubber or into heavier, firmly pressed sheets that are usually ribbed and smoked

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