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rubber. The Columbia Encyclopedia, Sixth Edition. 2001-07 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 fl for strength and whiting for stiffening; antioxidants; plasticizers, usually in the form of oils, waxes, or tars; accelerators; and vulcanizing agents. Used and waste rubber may be reclaimed by grinding followed by devulcanization with steam and chemicals, refining, and remanufacture. Silicone rubbers are organic derivatives of inorganic polymers, e.g., the polymer of dimethysilanediol. www.bartleby.com /65/ru/rubber.html   (1423 words)

RUBBER, Crude rubber is insoluble in water, alkali, and weak acid; it is soluble in benzene, gasoline, chlorinated hydrocarbons, and carbon bisulfide. It enabled rubber technologists to measure rapidly the deterioration caused by various conditions, especially exposure to atmospheric oxygen, and to adopt the use of agents, called antioxidants, that notably prolonged the useful life of heavy rubber articles, such as automobile tires. One type is the rubber mill, consisting of two power-driven steel rollers, which rotate at different rates in a trough to shear and knead the rubber until it is broken down to a soft and pliable condition. www.history.com /encyclopedia.do?articleId=221032   (4208 words)

Your Document-Electric Library Rubber, a substance obtained from a wide variety of plants growing principally in the tropics and secreting a milky liquid in the roots, stem, branches, leaves, or fruit, or in tubes under the bark. Rubber is sheeted on calenders by feeding rubber, previously plasticized on a mill, between the upper and middle rolls. Rubber cements are used for adhering paper to paper, rubber to rubber, or rubber to metal, and for impregnating cloth with rubber. www.slac.com /tree/research/styrene/rubber.html   (11256 words)

Rubber - MSN Encarta   (Site not responding. Last check: ) Natural rubber is obtained from the milky white fluid called latex, found in many plants; synthetic rubbers are produced from unsaturated hydrocarbons. Crude rubber from other plant sources is generally contaminated by an admixture of resins that must be removed before the rubber is suitable for use. Crude rubber is insoluble in water, alkali, and weak acid; it is soluble in benzene, gasoline, chlorinated hydrocarbons, and carbon disulfide. encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761556347   (571 words)

Rubber - Uncyclopedia Rubber is an elastic carbon thing which occurs as a milky semen (known as condom) in the sap of several varieties of plants. Rubber is believed to have been named by Hello, who discovered in 1770 that dried latex rubbed out rubbing out the rude words he wrote on a fish.. The para rubber tree initially grew somewhere hot and sunny, where it was the main source of what limited amount of latex rubber was consumed during much of the 19th century. uncyclopedia.org /wiki/Rubber   (721 words)

Rubber - Wikipedia, the free encyclopedia Rubber is an elastic hydrocarbon polymer which occurs as a milky colloidal suspension (known as latex) in the sap of several varieties of plants. Rubber's stress-strain behavior exhibits the Mullins effect, the Payne effect and is often modeled as hyperelastic. Natural rubber is often vulcanized, a process by which the rubber is heated and sulfur, peroxide or Bisphenol are added to improve resilience and elasticity, and to prevent it from perishing. en.wikipedia.org /wiki/Rubber   (1453 words)

Rubber Faqs Prior to 1839, the properties of rubber were dictated by the surrounding temperature. General purpose synthetic rubber has its origin in two gases: butadiene, a by-product of petroleum refining, and styrene, captured either in the coking process or as a petroleum refining by-product. Five gallons are used as feedstock (from which the substances that combine to form synthetic rubber are derived), while two gallons supply the energy necessary for the manufacturing process. www.rma.org /about_rma/rubber_faqs   (620 words)

Rubber is Critical, and Vulnerable | EnergyBulletin.net | Peak Oil News Clearinghouse   (Site not responding. Last check: ) While it is encouraging to note that rubber is one of the only materials used throughout the automotive industry that can be supplied from a renewable resource, it turns out there are some very significant problems to notice here. Synthetic rubber requires petrochemicals as a feedstock for its manufacture, using roughly 3.5 times more oil than what is required for a rubber tree plantation. The millions of rubber trees there are all clones coming from only a handful of seeds originating from the Amazon, and descendents are taken as cuttings from these trees. www.energybulletin.net /5408.html   (1129 words)

The Rubber Group Press Area Rubber Group, located at 15 Centre Road, eliminated hazardous waste from the manufacturing process and reduced its energy consumption by 45 percent (or 49,200 kilowatts per hour per month) and its water consumption by 90 percent (or 313,366 gallons of water per quarter). Some innovations the Rubber Group implemented were just common sense: the lights and the heat are turned off at night; in the summer, the windows are opened in the morning and the air-conditioner is not turned on until someone says that it's too hot; and each room has individual heat controls. Rubber Group also invested in energy-efficient lights that use reflectors to make as much light as the old lights while consuming less power, and it purchased thermal blankets to insulate molding areas to minimize heat loss. www.rubber-group.com /rubber_group_news.html   (2749 words)

RUBBER TREES It was not until the late nineteenth century, 1888, that John Boyd Dunlop invented the Rubber Pneumatic Tyre. Despite these technological breakthroughs the solid rubber tyre continued to be the dominant tyre and it was not until 1889 that the pneumatic tyre caught on. The rubber tree may be used to reconstitute new forests on poor or degraded soils. www.speedace.info /rubber.htm   (1615 words)

Rubber Uncured rubber "pre-forms" are manually placed into a central "pot" and fed into the individual cavities through a sprue / gating system similar to injection molding. As the mold closes, rubber is forced into the shape of the mold cavity. Uncured rubber is continuously heated and forced into a closed mold, under high pressure and constant temperature to form part shape. www.icsales.net /cat/Rubber.html   (165 words)

Rubber Rubber is a name given to a lot of different polymers that are all elastomers. The first rubber was the natural kind from the sap of hevea trees in Central America. Rubber actually got its name when people in Britain figured out that it could be used to erase or "rub out" mistakes made with a pencil. www.pslc.ws /macrog/kidsmac/rubber.htm   (1223 words)

Rubber bullet - Wikipedia, the free encyclopedia Rubber and wooden bullets are often used in riot control and to disperse protests. Rubber bullets, powered only by a primer, are often used for short-range indoor target practice or training, generally only with handguns. The X-Ring Rubber Bullet, the only widely-available brand of recreational rubber bullet, resembles an airgun "diablo" pellet, and is available in diameters for.38/.357/9 mm.,.44, and.45 calibers, and are loaded into brass or plastic cases; an enlarged flash hole is recommended to reduce the likelihood of primer "setback", which can stop a revolver's cylinder from rotating. en.wikipedia.org /wiki/Rubber_bullet   (470 words)

CRB Fundamentals Rubber is a natural or synthetic substance characterized by elasticity, water repellence, and electrical resistance. The rubber is then pressed between rollers to consolidate the rubber into slabs or thin sheets and is air-dried or smoke-dried for shipment. Synthetic rubber is made of raw material derived from petroleum, coal, oil, natural gas, and acetylene and is almost identical to natural rubber in chemical and physical properties. www.crbtrader.com /fund/articles/rubber.asp   (823 words)

KIDCYBER TOPICS Rubber plantations were established in Africa, Central and South America and in Asian countries such as Indonesia, Thailand, Vietnam and the Philippines. This rubber is crude rubber, and is ready to be shipped to factories to be processed in different ways to make many different products. Rubber is also used to make many mechanical parts such as gaskets, belts and seals. www.kidcyber.com.au /topics/tripIndrubb.htm   (632 words)

Rubber Rubber is a program whose purpose is to handle all tasks related to the compilation of LaTeX documents. The purpose of Rubber is to make the building of a document automated, from the source files to the final document file, replacing the work of a Makefile. Rubber is written entierly in the language Python, using features from version 2.2. www.pps.jussieu.fr /~beffara/soft/rubber   (383 words)

Rubber Bullets Don't Get Rubber Stamp - CBS News Those bullets are in fact made of metal encased in a rubber shell, and are different from the original rubber bullets first used in 1970 by the British in Northern Ireland. The British rubber bullets were designed to be fired at the ground so that they would bounce up and hit the legs of demonstrators. In the study, the scientists documented for each patient which regions of the body were hit, whether the bullets penetrated the flesh, the severity of the injuries, surgeries that were needed and the final outcome. www.cbsnews.com /stories/2002/05/24/health/main510084.shtml   (998 words)

The Rubber Group - Custom Molded & Standard Rubber Parts Since 1986, The Rubber Group has produced and distributed rubber products for a variety of industries like yours including Medical/Healthcare, Transportation, Process Control and a variety of industrial applications from high tech printing equipment to precision measuring devices. If we don't have the right part for your application, you can take advantage of The Rubber Group's full range of custom manufacturing capabilities: custom molded parts, custom extruded profiles, die cutting and fabrication and all with a full compliment of value added processes. Rubber parts are shipped worldwide, produced with lean manufacturing practices on timely and efficient Kanban schedules. www.rubber-group.com   (268 words)

Birthday Express : Rubber Ducky Party Supplies   (Site not responding. Last check: ) The Rubber Ducky theme was quite appropriate for our son's first birthday, especially since he had already received these little duckies before he was even born. We floated rubber ducks in a pond (punch bowl) and each child drew a duck with a shape on the bottom that corresponded to a ducky or bath themed prize. Using the rubber ducky theme made it easy to tailor the party so that my one-year-old had a good time, as well as the older kids at the party. www.birthdayexpress.com /bexpress/product.asp?sku=26953   (6559 words)

Rubber stamp - Wikipedia, the free encyclopedia Rubber stamping, also called stamping, is a craft in which some type of ink made of dye or pigment is applied to an image or pattern that has been carved, molded, laser engraved or vulcanized, onto a sheet of rubber. Rubber stamps for business are custom-made, showing an address, a corporate logo or something similar, or they are bought ready-made. The print from the carved rubber stamp is viewed as work of art on its own or one or several stamps are used to embellish a work of art with other components. en.wikipedia.org /wiki/Rubber_stamp   (827 words)

Rubber Natural rubber is made from the sap of the wild rubber tree. Rubber trees are native to tropical parts of South America and until the 1870's most rubber came from Brazil and other parts of South America. The rubber tree seedlings were later planted in large farms called plantations, in parts of South East Asia. www.kidcyber.com.au /topics/rubber.htm   (266 words)

Health and Safety in the rubber industry The Rubber Industry Advisory Committee (RUBIAC) Action Plan launched in June 1999 assisted the tyre, retread and general rubber goods sectors of the rubber industry to deliver an improved health and safety performance. Historically there was an excess of bladder cancer in rubber industry workers associated with the antioxidant beta-naphthylamine, which was banned in the 1950s. However, in 2001 RUBIAC reviewed the evidence on occupational cancers in the rubber industry and published a statement clarifying the position. This statement was updated in 2007. www.hse.gov.uk /rubber/index.htm   (323 words)

IISRP - We use Rubber in so many ways As Ralph Wolfe's poetic prose confirms, rubber is as indispensable to modern society as steel and wood and mortar. Synthetic rubber is man-made and is produced around the world in manufacturing plants that synthesize it from petroleum and other minerals. Depending on the chemicals used, products made of rubber can be as soft as a sponge, as resilient as a rubber band, or as hard as a bowling ball. www.iisrp.com /synthetic-rubber.html   (546 words)

Astlett Rubber Inc. Astlett Rubber is a trader and distributor of raw materials and we have been serving the rubber industry since 1885. Our decades worth of experience in the rubber industry means we have the best producers and transportation networks to provide our customers with the products and services they need. Natural Rubber is also available in a number of special chemical and physical forms. www.astlettrubber.com   (306 words)

Behind Chewing Gum | Bubble Gum Facts | History | Crisis | Tree | Rubber   (Site not responding. Last check: ) Chicle practically became non-existent after the war, so scientists were forced to come up with a new resin (tree sap or rubber.) Since then, gum bases have been made from various natural and unnatural resins. Gum base is mostly plastic and rubber but it also might have latex which is a natural ingredient. So what you should have learned is that the reason gum doesn't dissolve in your mouth is because you are chewing on a wad of rubber and/or latex with a bit of flavoring. www.kidzworld.com /site/p1057.htm   (446 words)

MRB - Towards Sustaining the Viability of the Malaysian Rubber Industry The most respected event in the world's rubber industry calendar, the International Rubber Conference 2008 or IRC2008, was launched by Datuk Peter Chin Fah Kui, Minister of Plantation Industries and Commodities, on 5 May 2008 in Kuala Lumpur. Malaysian Rubber Board (MRB) is pleased to announce the new line-up of MRB Board Members for the year 2008 and 2009. The Natural Rubber EST Database (http://genome.ukm.my/nrestdb/) is an online rubber gene bank containing sequence information, gene identities and functional classifications of rubber DNA sequences in the form of ESTs (Expressed Sequence Tags). www.lgm.gov.my   (450 words)

Rubber Raw Materials - Rubber, Rubber Stamp, Rubber Mulch, Rubber Face, Rubber Mat, Rubber Seal and more Neoprene is a kind of synthetic rubber via foam treatment, if change the component, will cause different specification.... It is two-component liquid silicone rubber (LSR), suitable for injection molding process in making key board and mobile keypad.... Neoprene Rubber is an excellent climate-proof tear-proof, and slip-proof low-rate closed-cell foaming material,... www.alibaba.com /catalogs/808/Rubber_Products.html   (455 words)

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