TUBELESS TYRE

Butyl rubber is not compatible with natural rubber, SBR, nitrile rubber or with any other elastomer having an appreciable degree of unsaturation modified butyls (chlorobutyl and bromobutyl) are compatible with such elastomers and used as liners in tubeless tyres to improve air retention. 

An assembly of outer cover (or tyre) fitted with an inner tube and mounted on a metal rim or wheel, the inner tube is inflated with air under pressure which supports the load of the vehicle. In the tubeless tyre no separate inner tube is fitted, the outer cover itself being so constructed as to retain the inflation air. 

The main applications of butyl rubber are in wire and cable applications, inner tubes, inner liners in tubeless tyres, tyre curing bladders, and pharmaceutical closures, the latter utilising the low... 

Halobutyl rubber is one of the BR species (chlorinated and brominated rubber) having the advantage of being able to be vulcanised with any type of rubber [23]. Due to this, the demand for halobutyl rubber is constantly growing, whereas the demand for BR has dropped. Halobutyl rubber is an excellent raw material for the tyre industry in the manufacture of tubeless tyres, high temperature and conveyor belts, and so on. [24]. Chlorinated rubber is generally produced on a commercial scale. 

Since butyl rubbers were first manufactured, inner tubes have been their most important application, despite the advent of tubeless tyres. This... 

Halobutyl rubbers are used in applications requiring butyl rubber behaviour but in which either standard butyl rubber cannot be used, or the halobutyl rubbers offer sufficient technical advantages over regular butyl to compensate for their higher cost. Thus, halobutyl rubbers are used in tubeless tyre inner liners, white sidewall and cover strip stocks, and blends... 

The functions of the inner liner in a tubeless tyre are to retain air in the tyre, to maintain air pressure at the correct level (which is important in terms of rolling resistance and tyre life) and to prevent air and moisture from penetrating the tyre carcass in amounts sufficient to cause damage to, or loss of cohesion of, the carcass components. 

The part of the pneumatic tyre assembly which holds the inflation air under pressure. It is protected by the outer cover or tyre and, in giant sizes, protected from rim damage by the flap . Inner tubes are primarily made of butyl rubber. Some cycle tubes still use NR. See Tubeless. Inorganic... 

Normally refers to the inner tube of a pneumatic tyre assembly but may refer to any component of a rubber product which is in tubular form, e.g., the inner lining of a fire hose. See Tubing. Tubeless... 

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