Members of the class vary markedly in structure and p. Introduction global warming is a major environmental problem. The range of electric conductivity of all elastomers can be affected extensively. From view of their usage and basic properties these can be also divided onto. Properties, behavior and uses natural rubber nr is the most often used rubber in the industry. Characteristic properties of silicone rubber compounds. Nr is a polymer of cisisoprene units linked together at 14 positions. Types of rubber and basic properties all seals inc. There are polymers made by polymerizing a mixture of two or more monomers.
Rubber, its history, properties, and applications dtic. E these approximations break down for rubber and porous solids. Most is vulcanized and used in tire production though some is used for bubblegum unvulcanised form. Processing aids and softeners, such as oils and plasticizers, modify rubber to aid in mixing or molding operations. Excellent physical properties including abrasion and low temperature resistance. Presently, a lot of rubber types are on the market that can be divided into more groups in accordance with different criterion e. Hnbr has excellent resistance to sour oil and gas, steam, hot water and ozone. The base polymer is the primary component of all rubber recipes and is selected in order to obtain specific chemical and physical properties in the final product. Basic elastomers properties eriks tools chemical resistance guide oring calculator unit converter bellow selector rubber profile price calculator anti vibration selector. Today the latex is harvested by cutting the tree each day and collecting the latex in a cup. The raw material to make natural rubber comes from trees. The gauge length of the specimen should also be quoted. Allpurpose syn thetic rubber, flame resistant, resistant to abrasion, very. Rubber properties, rubber mechanical properties, oring.
An example is styrenebutadiene rubber sbr which is a copolymer of butadiene and styrene. Some of the most commercially important addition polymers are the copolymers. The fine properties of silicone rubber 15 2 meeting the increasingly diverse and sophisticated needs of industry with the unique properties of silicone rubbers the main ingredients of shinetsus silicone rubber compounds are unique raw silicone rubber gum and highpurity silica. At low temperatures the material will become brittle and. Rubber has a low modulus of elasticity and is capable of sustaining a deformation of as much as. Speak with us to help you choose the best product for your application. The properties of the rubber latex were discovered by native american cultures, who made rubber balls and used the latex for waterproofing. They have rather better oil and chemical resistance than nitrile rubber and can withstand much higher temperatures.
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