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Rubber is a natural polymer of isoprene (polyisoprene), and an elastomer (a stretchy polymer). Polymers are simply chains of molecules that can be linked together. Rubber is one of the few naturally occurring polymers and prized for its high stretch ratio, resilience, and water-proof properties.
Hevea brasiliensis is a tall deciduous tree growing to a height of up to 43 m (141 ft) in the wild. Cultivated trees are usually much smaller because drawing off the latex restricts their growth. The trunk is cylindrical and may have a swollen, bottle-shaped base. The bark is some shade of brown, and the inner bark oozes latex when damaged.
The Amazon rubber cycle or boom (Portuguese: Ciclo da borracha, Brazilian Portuguese: [ˈsiklu da buˈʁaʃɐ]; Spanish: Fiebre del caucho, pronounced [ˈfjeβɾe ðel ˈkawtʃo]) was an important part of the socioeconomic history of Brazil and Amazonian regions of neighboring countries, being related to the commercialization of rubber and the genocide of indigenous peoples.
Firestonenaturalrubber.com. Firestone Natural Rubber Company, LLC is a subsidiary of the Bridgestone Americas, Inc. Headquartered in Nashville, Tennessee, the company operates the largest contiguous rubber farm in the world in Harbel, Liberia, which first opened in 1926.
The tread is a thick rubber, or rubber/composite compound formulated to provide an appropriate level of traction that does not wear away too quickly. [71] The tread pattern is characterized by a system of circumferential grooves, lateral sipes, and slots for road tires [26] or a system of lugs and voids for tires designed for soft terrain or ...
The International Rubber Regulation Agreement was a 1934 accord between the United Kingdom, India, the Netherlands, France and Thailand that formed a cartel of major rubber producing nations to restrict global rubber production and maintain a stable, high price for natural rubber. [1] In 1979 a new agreement was formed - an International ...
Firestone established the Firestone Natural Rubber plantation in Harbel, Liberia in 1926. From 1926 until the outbreak of the First Liberian Civil War in 1990, the Firestone Natural Rubber Company was the largest plantation of its kind in the world. [49] It was originally envisioned for 350,000 people to be employed on the newly created ...
Ebonite is a brand name for a material generically known as hard rubber, obtained via vulcanizing natural rubber for prolonged periods. Ebonite may contain from 25% to 80% sulfur and linseed oil. [1][2] Its name comes from its intended use as an artificial substitute for ebony wood. The material has also been called vulcanite, [3] although that ...