Rubber material selection guide xnbr or carboxylated nitrile abbreviation xnbr astm d2000 classification bf, bg. Engineering sciences mechanical properties of rubber an overview al. Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. This type of rubber has a high tensile strength ranging from 21 to 31 mpa. In the production of nbr, acrylonitrile ch2chcn and butadiene. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile acn and butadiene. Trade names include perbunan, nipol, krynac and europrene nitrile butadiene rubber nbr is a family of unsaturated copolymers of 2propenenitrile and various butadiene monomers 1,2butadiene and 1,3butadiene. Rubber sheet properties exposure to heat, sunlight, chemicals, ozone and oils, as well as pressure, tension, binding, stretching and folding will affect the performance of any rubber sheet product. The other chemicals used were of industrial purity. A flex class 1 nitrile sheet thickness mm 6 9 16 19 25 32 packing details length roll 40 mtrs. Pdf investigation of physical, mechanical and biodegradation. Acrylonitrile butadiene rubber nbr, usually shortened to nitrile, was developed in 1941 as the first oil resistant rubber.
It is the most widely used and economical elastomer. An important factor in the properties of nbr is the ratio of acrylonitrile groups to. White nitrile rubber sheet also has excellent tensile strength 6 mpa, minimum which allows it to be used to make gaskets. Pdf effect of nitrile butadiene rubber nbr on mechanical and. Nr, and styrenebutadiene rubber, which is the most important sort of synthetic. Nitrile has excellent resistance to oil, gasoline, solvents, mineral and vegetable oils, hydraulic fluid, and fuels. Nitrile orings are used with gasoline, crude oil, power steenngflllid, hexane, toluene, watel. Nitrile rubber nbr is the general term for acrylonitrile butadiene copolymer. The synthetic rubber manual, 9th edn, international institute of synthetic.
Nitrile white rubber food grade discount rubber direct. Its a synthetic rubber polymer known for its superior resistance to fuels such as kerosene, diesel, lubricating oils, grease and petroleum based transmission fluids nitrile bunan nbr is available in sheet, cloth inserted, extruded, or molded forms. Preparation of ldpeevapema, nano clay blend composite in the stage. Blending of nitrile rubber with plasticised pvc produces vinylbased thermoplastic elastomers. Technical information epdm rubber gaskets kastrade. Nitrile acrylonitrilebutadiene nitrile acrylonitrilebutadiene has very goodoil, gasoline and abrasion resistance. Its main applications are in fuel hoses, gaskets, rollers, and other products in which oil resistance is required. Following is the list of nitrile rubber properties. Pdf chemical degradation of nitrile rubber in biodiesel. Nitrile rubber can generally be used down to about 30c but special grades of nbr can work at lower temperatures too. Mechanical and biodegradation properties of nitrile butadiene rubber by. The polymer is made in the form of a latex or emulsion and can be used or processed very much like natural rubber latex. General features nitrile rubber is a copolymer of acrylonitrile acn and butadiene that is generally resistant to oil, fuel, aliphatic hydrocarbons, and other chemicals, but can be attacked by ozone, aromatic hydrocarbons, ketones, esters and aldehydes.
The properties of these rubber compounds are determined by its acn content, which is broken down into three classifications. Several studies have been carried out to reuse scraptires in a variety of rubber and plastic products, incineration for production of electricity, or as fuel for cement kilns, as well as in asphalt concrete. Rubber sheet properties material compatibility chart. Rubber material selection guide xnbr or carboxylated nitrile. Nitrile rubber nbr, bunan provides excellent oil resistance. Nbr or the nitrile synthetic rubber is considered the workhorse of the rubber products of the automotive and other industrial units. Identification of the substancemixture and of the companyundertaking product name. Excellent physical properties including abrasion and low temperature resistance. Nitrile often referred to as bunan rubber or perbunan is the most commonly used elastomer in the seal industry. Rubber material selection guide hnbr or highly saturated. Nitrile rubber is a copolymer of butadiene and acrylonitrile that possesses unique physical and chemical properties that make it one of the most widely used synthetic elastomers in the world.
Nitrile should not be used in highly polar solvents such as acetone and mek ozone. Effect of different nitrile elastomers in down hole. The effect of different nitrile butadiene rubber nbr, hydrogenated nitrile butadiene rubber hnbr, and carboxylated nitrile butadiene xnbr, were evaluated in a down hole packer application. Its a synthetic rubber polymer known for its superior resistance to fuels such as kerosene, diesel, lubricating oils, grease and petroleum based transmission fluids. Our rubber products are a proprietary blend of various polymers formulated to. Nitrilepvc resin blends nbrpvc pvc resins are blended with nitrile polymers to provide increased resistance to ozone and abrasion. Nitrile rubber, which is also called bunan or nbr, is an unsaturated synthetic copolymer. Nitrile rubber is resistant to oil, caustics, aliphatic hydrocarbons, and hydraulic fluids and chemicals. An elastomer is a solid, hence, the eventual progression to thermodynamic stability is the procession from a solid, to a liquid, ultimately a gas. Pdf nitrile butadiene rubber nbr as a high consumption of plastic is widely utilized. Complex, vulcanized acrylonitrile butadiene elastomer. General properties of elastomers elbex corporation. Resistance to alkalis and acids increases as the nitrile content of the compound increases.
Matl style code metro industries material specification rsbne60. Grades with high acrylonitrile content have better oil resistance whereas low acrylonitrile content gives better low temperature flexibility and resilience. Parcos most popular matelialfor orings is nitrile compound 420070. Nitrile gloves are made from a synthetic polymer that exhibits rubber like characteristics when vulcanised. Nitrile rubber sheet page 1 of 2 white, fda compliant. Hnbr is widely known for its physical strength and retention of properties after longterm exposure to heat, oils and chemicals.
Nitrile bunan nbr rubber is an economical material that provides high resistance to oils and hydrocarbon based fluids. Like nbr, this type of elastomer has excellent resistance to oils and fuels but. Nitrile, or bunan, is a copolymer of butadiene and acrylonitrile. Being a nitrile ru bber, it exhibits excellent resistance to oil especially food based oil and grease. As wells began producing increasing amounts of hydrogen sulfide h2s through stimulation or reservoir conditions coupled with higher production temperatures, sporadic seal and packer failures have been. Fluorosilicones combine most of the attributes of silicone with resistance to. These materials offer a versatile range of properties and are used in numerous applications. Acrylonitrilebutadiene rubber nbr properties and applications nitrile rubber nbr is commonly considered the workhorse of the industrial and automotive rubber products industries. Dmr nbr is a black nitrile butadiene rubber, commonly referred to as nbr, nitrile or buna. The properties of hydrogenated nitrile rubber hnbr depend upon the acrylonitrile content and the degree of hydrogenation of the butadiene copolymer. Nitrile butadiene rubber nbr is a family of unsaturated copolymers of 2propenenitrile and various butadiene monomers 1,2butadiene and 1,3butadiene. Nitrile rubber belongs to the family of unsaturated copolymers of acrylonitrile and butadiene. Nitrile 70, nitrile rubber properties, nitrile specifications.
The prefix cyano is used interchangeably with the term nitrile in industrial literature. Nbr rubber,nitrile rubber properties,applications of nbr. A study of thermal ageing of carboxylated nitrile rubber latex thin films foo yian tyan properties of rubbers are subject to change as a result of ageing, even during storage or during the use of rubber products. Several studies have been carried out to reuse scraptires in a variety of rubber and plastic products, incineration for production of electricity. Its high resistance to oils and chemicals make it a useful manufacturing material for the automotive seals and disposable glove industries. Nitrile is a synthetic latex, a rubber product resulting from research undertaken between the two world wars.
Nbr offers excellent resistance to petroleumbased oils and fuels, silicone greases, hydraulic fluids, water and alcohols. Nbr materials are one of the most commonly used elastomers in sealing applications. Timco rubber can work with your business to design and provide nitrile parts customized for the specific needs of your applications. Hnbr can be used with a wide range of temperatures 40c to 165c with minimal degradation of the compound. Rubber and elastomers overview professional plastics. Commercial nitrile bunan style 35 jump to navigation a smooth finish blended nitrile sheet, which is offered in a range of five durometers. Nitrile rubber, also called nitrile butadiene rubber nbr, bunan, is a synthetic rubber that provides excellent resistance to petroleumbased oils as well as mineral and vegetable oil. Liquid natural rubber used for compounding was prepared by thermal. Identification of the substancemixture and of the companyundertaking. It is commonly used to make hoses, seals, gloves, and many other industrial products.
Nitrile is a general purpose oil resistant polymer which has good solvent, oil, water and hydraulic fluid resistance, good compression set, abrasion resistance and tensile strength. Nitrile rubber, also called nitrilebutadiene rubber nbr, bunan, is a synthetic rubber that provides excellent resistance to petroleumbased oils as well as mineral and vegetable oil. Good physical properties and chemical resistance to the most common hydraulic fluids makes nbr an excellent sealing material. Epdm enhance the ozone resistance of nbr without reduction in physical. Effect of nitrile butadiene rubber nbr on mechanical and tribological properties of composite friction brakes. Nitrile rubber of medium acrylonitrile content, chemaprene n339, a product from synthetics and chemicals, bereilly, india was used for the study. By selecting an elastomer with the appropriate acrylonitrile content in balance with other properties, industrial nitrile rubber nbr is used in. Nitriles are found in many useful compounds, including methyl cyanoacrylate, used in super glue, and nitrile rubber, a nitrilecontaining polymer used in latexfree laboratory and medical gloves. Nitrile butadiene rubber nbr is a family of unsaturated copolymers of 2propenenitrile and various butadiene monomers 1,2butadiene. Trade names include perbunan, nipol, krynac and europrene. A wide variety of nitrile rubber properties options are available to you, there are 111 suppliers who sells nitrile rubber properties on, mainly located in asia. Nitrile rubber nbr, an oilresistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene. Rubber material selection guide hnbr or highly saturated nitrile.
Nitrile rubber is a typical material used in aut omotive systems, e. Matl style code metro industries material specification. The example shown here used uniaxial compression at different strain rates and strain cycles. Hnbrs have better oil and chemical resistance than nitrile rubbers and can also withstand much higher temperatures. The properties and characteristics of manufactured rubber products may vary based on polymer type and formulation. Please note that information presented here is general to nitrile polymer.
The top countries of suppliers are china, japan, from which the percentage of nitrile rubber properties supply is 99%, 1% respectively. Properties of rubber styrene butadiene sbr o riginally developed as a low cost substi tute for natural rubber but not necessarily always the case good water resistance and a brasion resistance maximum continuous operating temperature about 225 f p oor weathering, but can overcome with specific raw materials. There are some differences, which make this polymer unique. Here you will find our nitrile specifications chart which can also be downloaded in pdf.
The general properties of common polymers used in sheet rubber shown in the chart below are not intended to be used to make final choices for a. Contact timco for more information about custom nitrile parts for your business. The pvc also provides a significant improvement in solvent resistance yet maintains similar chemical and physical properties, commonly noted among nitrile elastomers. Petroleum, solvents, coal tar solvents, aromatic hydrocarbons. Nitrile rubber properties depends on the acrylonitrile content and with the increase in the can content, its tg glass transition temperature is also increased which will also increase the brittleness temperature of the nitrile rubber. Timco rubber can work with your business to design and provide nitrile parts customized for the. Nitrilepvc resin blends minnesota rubber and plastics. Bulletin of the transilvania university of bra sov vol. Rubber material selection guide nbr nitrile or buna n. The mechanical response of nitrile rubber can be tested in many different ways. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic. Nitrile has excellent resistance to oil, gasoline, solvents. The most stable thermodynamic state highest entropy is a gas.
Nitrile must be specially compounded for resistance to ozone, sunlight and natural aging. Its temperature range dry heat is approximately 40c 120c. Plasticizer, dibutylphthalate was of laboratory reagent grade. Background information on the actual rubber products and their expected environment and service conditions is also presented. The solutions youre looking for with the personal attention you deserve. Animal and vegetable fats, oils, greases, ozone, strong and oxidizing chemicals.
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