Trade names include perbunan, nipol, krynac and europrene. Rubber material selection guide nbr nitrile or buna n. It is also suitable for contact with aromatic hydrocarbons and most dilute alkalis and acids. Nitrile nbr nitrile often referred to as bunan rubber or perbunan is the most commonly used elastomer in the seal industry. Polymax nbr nitrile cord polymax nbr cord is widely used for applications involving resistance to petroleum oils minerals and vegetable oils. Nitrile sheet rubber is commonly used in the automotive and aeronautical industries where the nitrile elastomer is valued for its resistance to oils and certain types of fuels. Nitrile rubber, also known as bunan, perbunan, acrylonitrile butadiene rubber, and nbr, is a synthetic rubber copolymer of acrylonitrile acn and butadiene. A flex class 1 nitrile sheet thickness mm 6 9 16 19 25 32 packing details length roll 40 mtrs.
Rubber extrusions nitrile bunan general description. 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. Effect of different nitrile elastomers in down hole. Manufacturer of jagruti rubber sheet offers pure rubber sheeting, skirtboard, naturalsbr, nitrile nbr, neoprene cr, epdm, silicon and viton rubber for various industrial applications. Mechanical and electrical properties of natural rubber and. Pdf preparation and properties of nitrile rubbermontmorillonite. Nitrile rubber is a synthetic rubber made from a copolymer of acrylonitrile and butadiene.
Characteristic properties of silicone rubber compounds. Pdf the nitrile rubber nbrunmodified montmorillonite nammt clay nanocomposites were prepared by latex blending method followed by melt mixing of. Nitrile rubber possesses unique physical and chemical properties that make it one of the most widely used synthetic elastomers in the world. The curing and mechanical properties of nitrile nbr and natural rubber nr blends were carried out. Rubber is composed of many different ingredients that include the base elastomer, vulcanization agents, fillers and plasticizers. Grades with high acrylonitrile content have better oil resistance whereas low acrylonitrile content gives. Hnbr is widely known for its physical strength and retention of properties after longterm exposure to heat, oils and chemicals. This nitrile 70 durometer 70a specifications chart will help you determine if these nitrile material properties will be compatible with your rubber or oring seal application. Nitrile 70, nitrile rubber properties, nitrile specifications.
Martins rubber explain the advantages of natural rubber. The tensile strength increases by more than 100%, with a slight effect on the elongation, and the tear strength also increases considerably for these nbrsilicate nanocomposites, compared to neat nbr. Properties, behavior and uses natural rubber nr is the most often used rubber in the industry. Rubber cal nitrile commercial grade black 60a rubber sheet buna rubber 18 thick x 3ft width x 6ft length. Synthetic rubber comes in nearly a dozen major types with differing properties for various applications. Acrylonitrile butadiene rubber nbr, usually shortened to nitrile, is a unique elastomer. Rubber parts can therefore function as shock and vibration isolators andor as dampers. The nitrile rubber nbrunmodified montmorillonite nammt clay nanocomposites were prepared by latex blending method followed by melt mixing of compounding ingredients by using tworoll mill. The blends from acrylonitrile butadiene rubber nbr, chloroprene rubber cr and polyvinyl chloride pvc has been designed for products working in contact with oils.
Blend of natural rubber nr and nitrile rubber nbr imparts rubber with a balance in tensile strength and oil resistance,, while the other mechanical properties of the blend such as tear strength and abrasion resistance can be improved by the addition. It has good elastomeric properties and is also resistant to physical hazards like punctures, cuts, snags, abrasion, oil, caustics and aliphatic hydrocarbons. Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. Nitrile rubber belongs to the family of unsaturated copolymers of acrylonitrile and butadiene. Comparison chart for nitrile, carboxylated nitrile and hydrogenated nitrile order to saturate the hydrocarbon sequences in high nitrile compound with nitrile acn content of approximately 50%, commonly recommended for use with hydrocarbon fuels resistance than nitrile and has a good chemical low nitrile compound with nitrile acn content. Rubber material selection guide hnbr or highly saturated. Nitrile rubber, which is also called bunan or nbr, is an unsaturated synthetic copolymer. Nbr rubber,nitrile rubber properties,applications of nbr. Neoprene rubber, also known as polychloroprene or pc rubber, is an extremely versatile synthetic rubber offering oil, petroleum, and weathering resistance. An important factor in the properties of nbr is the ratio of acrylonitrile groups to. Acrylonitrilebutadiene rubber nbr properties and applications nitrile rubber nbr is commonly considered the workhorse of the industrial and automotive rubber products industries. The mechanical response of nitrile rubber can be tested in many different ways.
Nitrile has very good oil and gasoline resistance, superior resistance to petroleumbased hydraulic fluids, a wide range of service temperatures, good resistance to hydrocarbon solvents, and very good resistance to alkalis and acids. When deciding between latex, nitrile and vinyl glovesit can be a little confusing trying to determine which type of glove is the ideal choice. 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. Nitrile 60 durometer buna 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. Two common synthetic rubber compounds are known as epdm and nitrile rubber. For assistance in identifying the appropriate polymer or material, or to develop and formulate a nbr or nitrile buna n rubber compound to meet your specific application and performance requirements, please contact rahco rubber, inc. This is the difference between neoprene and nitrile rubber. Material properties of epdm, nbr, and fpm rubber seals. 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. Aug 27, 2017 it has excellent uv and ozone resistance, good flame resistance, good oil and solvent resistance, and good tensile and harness properties. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile acn and butadiene. The example shown here used uniaxial compression at different strain rates and strain cycles. 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. Nbr offers excellent resistance to petroleumbased oils and fuels, silicone greases, hydraulic fluids, water and alcohols.
The properties and characteristics of manufactured rubber products may vary based on polymer type and formulation. Mohammod aminuzzaman supervisor from the department chemical science, faculty of science, and assistant prof. Nitrile rubber nbrclay nanocomposites were prepared by cocoagulating the nbr latex and clay aqueous suspension. Bulletin of the transilvania university of bra sov vol. Natural rubber is composed of the polymer polyisoprene. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic. Rubber material selection guide xnbr or carboxylated nitrile abbreviation xnbr astm d2000 classification bf, bg. 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. The nitrile rubber properties that are listed below are for our most popular nitrile 70 durometer 70a rubber material compound. Polymax nbr rubber cord also has good mechanical properties, low compression set and is most cost effective.
Nitrile rubber ram gasket material data sheet the co upays products are used for a uultiplicity of purposes ad as the co upay has o cotrol over the ethod of their app lications or use, the company excludes all conditions or warranties, expressed or implied by statute or otherwise, as to their products andor their fitness for any. Although its physical and chemical properties vary depending on the polymers composition of nitrile, this form of synthetic rubber is unusual in being. Black nitrile rubber sheet has generally good physical properties including mechanical strength. Difference between neoprene and nitrile rubber compare the. Timco rubber can work with your business to design and provide nitrile parts customized for the specific needs of your applications.
Please note that information presented here is general to nitrile polymer. Properties of rubber polymer base good points bad points natural rubber the raw material to make natural rubber comes from trees produces compounds with high tensile strength, tear strengt h, tear and abrasion resistance c an be used at low temperatures, low compression set, high resilience. We can change the formulation of the rubber so that the specifications meet your needs. Acrylonitrile butadiene rubber nbr, usually shortened to nitrile, was developed in 1941 as the first oil resistant rubber. For example, if you need to find rubber compression properties, rubber weather resistance or even rubber ozone resistance for your orings, you can find the best combination of elastomer properties by using this oring material guide for your application. Nitrile nbr is the polymer of choice for applications requiring oil and solvent resistance. Preparation and mechanical properties of nitrile butadiene. Rubber blending is commercially important because it gives a balance of properties which one rubber alone cannot provide.
The rubber is collected from the latex in a series of steps involving preservation, concentration, coagulation, dewatering, drying, cleaning, and blending. Specific physical and chemical resistances vary by compound formulation. Several studies have been carried out to reuse scraptires in a variety of rubber and plastic products, incineration for production of electricity. Or better yet, use the rubber chart to find which material will best suit your environment. Most commonly used general purpose oring material because of relative low cost, good mechanical properties, and basic resistance to many common lubricants. Crude natural rubber is found in the juices of many plants shrubs, vines, and trees, the principal of which is the hevea brasiliensis tree, native to brazil. Physical properties of nitriles chemistry libretexts. Hnbr can be used with a wide range of temperatures 40c to 165c with minimal degradation of the compound. A lip sealing ring constitutes the seal between socket an spigot end. Schaefer introduction rubber is a unique material that is both elastic and viscous. The tear properties of these crosslinked nbrsilicate nanocomposites display the similar trend to that of their tensile mechanical properties. Swelling properties of nitrilebutadiene rubber with different. The chemical and physical properties of nitriles are given belownitriles are somewhat like colorless solids and liquids having unique odors. Rubber material selection guide hnbr or highly saturated nitrile.
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. Sulfurless cure system for carboxylated acrylonitrile butadiene latex films and its cytotoxicity properties article pdf available december 2015 with 1,053 reads how we measure reads. It is commonly used to make hoses, seals, gloves, and many other industrial products. They have boiling points measuring between 82118 c. The amount of oil resistance in nitrile rubber depends on the percentage of acrylonitrile. This nitrile 70 durometer 70a specifications chart will help you determine if these. Nitrile rubber nbr is commonly considered the workhorse of the industrial and automotive rubber products industries. Nitrile rubber nbr is the general term for acrylonitrile butadiene copolymer. Typically, a small percentage of other materials including proteins, fatty acids, resins, and inorganic materials are found in natural rubber.
Lili wu, yukui ding, jianwei zhen, qian zhang, siyang. It is extracted in the form of latex from the bark of the hevea tree. The nitrile rubber properties that are listed below are for our most. The lip sealing ring ensures quick and efficient jointing of the pipe system while providing a tight seal in case of both pressure and vacuum. General properties of elastomers elastomer page butyl 2 epdm ethylenepropylenediene modified 3 natural rubber 4 neoprene 5 nitrile bunan 6. This research concerns physical, mechanical properties and also biodegradation of nitrile butadiene rubber, which to be composed with the natural polymers. Rubber physical properties charts and data and sheets. It is the most widely used and economical elastomer. Nitrile 70, nitrile rubber properties, nitrile specifications mykin inc. Unless they are specially compounded, nitrile is not resistant to. Martin bailey, jonathan fisher registered in england no. Following is the list of nitrile rubber properties. Grades with high acrylonitrile content have better oil resistance whereas low acrylonitrile content gives better low temperature flexibility and resilience. Background information on the actual rubber products and their expected environment and service conditions is also presented.
Rubber material selection guide nbr nitrile or buna n robinson. Structure and properties of nitrile rubber nbrclay. Although the term rubber is used rather loosely, it usually refers to the compounded and vulcanized. Dmr nbr is a black nitrile butadiene rubber, commonly referred to as nbr, nitrile or buna. Nr is a polymer of cisisoprene units linked together at 14 positions. Rubber properties, rubber mechanical properties, oring. It can be produced by freeradical emulsion polymerization of butadiene with 15 to 45 percent acylonitrile either hot hot rubber or cold cold rubber. Originally synthesized in germany in 1929, nbr rubber became coveted by industrial countries across the world because of the unique oilresistant traits it possessed.
Nitrile rubber is most popular for its oil resistance, although its also tough and temperature resistant. Nbr acrylonitrile butadiene rubber, bunan, nitrile. The lone pair electrons on the nitrogen are contained in a sp hybrid orbital which makes them much less basic and an amine. Blending of nitrile rubber with plasticised pvc produces vinylbased thermoplastic elastomers. Engineering sciences mechanical properties of rubber an overview al. Nbr materials are one of the most commonly used elastomers in sealing applications.
Nbr is actually a complex family of unsaturated copolymers of acrylonitrile and butadiene. Here you will find our nitrile specifications chart which can also be downloaded in pdf. After the latex is processed, natural rubber becomes an elastomer with excellent mechanical properties. Pdf investigation of physical, mechanical and biodegradation. Nitrile rubber is a copolymer of butadiene and acrylonitrile and has excellent oil and solvent resistance, but low uv and ozone resistance. These characteristics make neoprene a natural fit for the automotive world, where neoprene rubber applications are used for many exposed parts that can encounter oil or petroleum. A superior reinforcing filler for highperformance nitrile rubber composites shubham c. We also acknowledge previous national science foundation support under grant numbers 1246120.
Nitrile rubber nbr nbr is a family of unsaturated copolymers of acrylonnitrile can and butadiene monomers. It is broadly used in automotive parts and industrial goods. Curing and mechanical properties of nitrile and natural rubber. It will tolerate a large amount of elongation 400% before breaking and has excellent tear strength 40 nmm. Nitrile rubber can generally be used down to about 30c but special grades of nbr can work at lower temperatures too. The nitrile rubber nbrunmodified montmorillonite nammt clay nanocomposites were prepared by latex blending method followed by melt mixing of compounding ingredients by. This type of rubber has a high tensile strength ranging from 21 to 31 mpa. All about nitrile rubber properties, applications and uses.
Latex gloves latex gloves are natural material, made out of rubber. Nitrile rubber is resistant to oil, caustics, aliphatic hydrocarbons, and hydraulic fluids. The characteristics of the designed blends either binary blends nbrpvc or pvccr or ternary blends nbr. Characterizing the mixtures examined the natural rubber is the most often used type of mixture of the rubber industry nowadays which is produced from the milklike fluid from latex of certain tropical trees. Its main applications are in fuel hoses, gaskets, rollers, and other products in which oil resistance is required. Nitrile has good mechanical properties and high wear resistance relative to other elastomers. Lets take a closer look at the attributes and benefits of each type of glove. It is meant for use in pads, seals and gaskets, among many other applications. Nitrile rubber nbr, an oilresistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene.
The strong dynamic properties of natural rubber make it ideal for use cases requiring high tensile strength, low compression set, strong rebound, with tear, and abrasion resistance. Nitrile rubber nbr, also called nitrile butadiene rubber, an oilresistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene. More acrylonitrile makes the rubber more resistant to swelling from oil, stronger, and less permeable to gases. In the production of nbr, acrylonitrile ch2chcn and butadiene. While polyisoprene can also be made synthetically, producing what is known as synthetic natural rubber. These materials offer a versatile range of properties and are used in numerous applications. Rubber material selection guide xnbr or carboxylated nitrile. 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. Good physical properties and chemical resistance to the most common hydraulic fluids makes nbr an excellent sealing material. Transmission electron microscopy showed that the silicate layers of clay were dispersed in the nbr matrix at the nano level and had a planar orientation. Nitrile bunan sheet rubber products from warco biltrite.
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