Butadiene rubber, synthetic rubber widely employed in tire treads for trucks and automobiles. Hydrogenated nitrile rubber hnbr final 30june2006 eye contact. The nitrile rubber properties that are listed below are for our most. Nitrile rubber nbr nitrile rubber is a copolymer of butadiene and acrylonitrile. 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. The properties vary depending on the acn content which ranges between 18% and 50%. 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 global nitrile butadiene rubber market size stood at usd 1. Alternating copolymers are produced when a zieglarnatta catalyst is employed. Hydrogenated nitrile butadiene rubber hnbr hydrogenated nitrile butadiene rubber hnbr, also known as highly saturated nitrile hsn, is widely known for its physical strength and retention of properties after longterm exposure to heat, oil and chemicals. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile acn and butadiene. Acrylonitrile butadiene rubber nbr, usually shortened to nitrile, is a unique elastomer. Higher the acn content, better resistance to oils, fuels and other chemicals but lower the flexibility. After the latex is processed, natural rubber becomes an elastomer with excellent mechanical properties. Nitrile butadiene rubber nbr, generally resistant to oil. Swelling properties of nitrilebutadiene rubber with different. The physical and chemical properties of nitrile rubber vary depending on the polymers composition of acrylonitrile.
Nitrile polymer, also known as buna n is a synthetic rubber, copolymer of acrylonitrile acn and butadiene. Timco rubber can work with your business to design and provide nitrile parts customized for the specific needs of your applications. This research concerns physical, mechanical properties and also biodegradation of nitrile butadiene rubber, which to be composed with the natural polymers. Physical and chemical properties of nitrile rubber varies depending on acn content. Preparation and mechanical properties of nitrile butadiene rubbersilicate nanocomposites weigwo hwanga, kunghwa weia, changmou wub adepartment of materials science and engineering, national chiao tung university, hsinchu 30049, taiwan, roc bdepartment of aeronautical materials, aeronautical systems research division, chungshan institute of science and technology. Following is the list of nitrile rubber properties. Abstract the nanocomposites of nitrilebutadiene rubber nbr and organo. Nitrile nitrile butadiene rubber nbr nitrile, or nbr is a family of unsaturated copolymers of 2propenenitrile and various butadienemonomers 1,2 butadiene and 1,3 butadiene.
Protective gloves made of nbr are available in versions ranging from thin and sensitive to thick and strong. Lili wu, yukui ding, jianwei zhen, qian zhang, siyang. Mechanical and morphological properties of polypropylene nitrile butadiene rubber compatibilized vulcanizates article in kgk rubberpoint 593. It is resistant to oil, fuel and other chemicals the more nitrile within the polymer, the higher the. Nbr6260 acrylonitrilebutadiene rubber product code. Hnbr hydrogenated nitrile rubber elastomer engineering. The effect of acrylonitrile content % acn level within the elastomers was evaluated as well.
Stearic acid is the major component of this layer which was measured to be 6 nm thick. Pdf the mechanical properties of a model hydrogenated. Although its physical and chemical properties vary depending on the polymers composition of nitrile, this form of. Nitrile 70, nitrile rubber properties, nitrile specifications mykin inc. Nitrile is widely used due to its resistance to oils, fuels, and other chemicals. It is broadly used in automotive parts and industrial goods. Nitrile butadiene rubber nbr nanocomposites are prepared with different contents ranging from 5 to 20 phr part per hundred parts of rubber of sinai sand. Nitrile rubber, also known as nitrile butadiene rubber nbr and bunan, is a synthetic copolymer composed of acrylonitrile and butadiene. It is used extensively in the petroleum and natural gas industries, and in applications such as water, sewer, mineral oil, and vegetable oil. It has excellent mechanical, thermooxidative and chemical resistant properties and an excellent operating temperature range. If irritation persists, continue flushing for 15 minutes, rinsing from time to time under eyelids. The spectrum was deconvoluted into seven component peaks a, b, c, g showing the different binding states of carbon. Pdf the nitrile rubber nbrunmodified montmorillonite nammt clay nanocomposites were prepared by latex blending method followed by melt mixing of. Nitrile rubber nitrile butadiene rubber, nbr of all the materials described here, protective gloves manufactured from nitrile butadiene rubber possess the greatest resistance to abrasion, puncturing, cutting and tearing.
Originally synthesized in germany in 1929, nbr rubber became coveted by industrial countries across the world because of the unique oilresistant traits it possessed. The copolymerization occurs in an aqueous emulsion. Nbr is actually a complex family of unsaturated copolymers of acrylonitrile and butadiene. 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. Nitrile rubbers are copolymers of butadiene and acrylonitrile. Carboxylated nitrile rubber xnbr composite containing organic filler was fabricated on labscale, tworoll mill. Nitrile butadiene rubber nbr has a very good basic properties such as oil resistance over a wide range of temperature, heat ageing resistance, and fuel, alcohol resistance, but it has resilience, tensile and tear properties not as good as natural rubber 1, 12.
Acrylonitrile butadiene rubber nbr, usually shortened to nitrile, was developed in 1941 as the first oil resistant rubber. With our brands perbunan, krynac and baymod n we offer a broad range of grades for multiple applications. Rubber blends butadiene rubber natural rubber styrene butadiene rubber miscibility blending of rubbers is often used to enhance the properties of rubber products. Jun 07, 2001 hydrogenated nitrile rubber hnbr is a viable alternative to polychloroprene for many automotive applications such as timing belts, seals and hoses. Nitrile 70, nitrile rubber properties, nitrile specifications.
Its main applications are in fuel hoses, gaskets, rollers, and other products in which oil resistance is required. 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. Material properties hnbr 90 hsn90, hnbr 90 duro material code. Comparison on properties of acrylonitrile styrene butadiene rubber nsbr and styrene butadiene rubber sbr nitrile rubber nbr blends authors yotwadee chokanandsombat, supanut owjinda, chakrit sirisinha, bangkok corresponding author. Timco rubber can work with your business to design and provide nitrile parts customized for the specific needs of. When free radicals are used, a random copolymer is obtained. Recommended use of the chemical and restrictions on use. Nitrile polymer manufacturer goodyear rubber company. Preparation, structure and properties of nitrilebutadiene rubber. Pdf preparation and properties of nitrile rubbermontmorillonite. 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. Nbr rubber,nitrile rubber properties,applications of nbr. It has outstanding resistance to oil, gasoline, petroleum based hydraulic fluids and hydrocarbon solvents.
The term has also been applied to copolymers of other dienes andor nitriles. Acrylonitrile nitrile butadiene rubber nbr, bunan nbr rubber is a thermoset elastomer or rubber material. Rubber material selection guide hnbr or highly saturated. Mechanical and physical properties of nanosilicanitrile. Nitrile rubber nbr, also called nitrile butadiene rubber, an oilresistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene. Nitrile butadiene rubber, commonly known as nbr or bunan, is formulated for hydrocarbon service. This study deals with blends containing rubber only because of the elimination of the potential side effects of the additives. Good physical properties and chemical resistance to the most common hydraulic fluids makes nbr an excellent sealing material.
Mykins rn00170, nitrile bunan 70 durometer, is a general purpose copolymer of butadiene and acrylonitrile. Properties of natural and styrene butadiene rubbers with. Grades with high acrylonitrile content have better oil resistance whereas low acrylonitrile content gives better low temperature flexibility and resilience. Pdf cure characteristics and mechanical properties of. Nitrile rubber nbr, bunan is a copolymerized synthetic rubber of acrylonitrile and butadiene. Butyl is not recommended for use with petroleum oils, fluids, or solvents. Nitrile rubber, also known as bunan, perbunan, or nbr, is a synthetic rubber copolymer of acrylonitrile acn and butadiene. In addition to its excellent elastomeric properties, it is resistant to oil, caustics, and aliphatic hydrocarbons. Abstract poor physical and chemical attraction between nitrile butadiene rubber nbr matrix and filler resulted in low thermal properties. Nitrile rubber, which is also called bunan or nbr, is an unsaturated synthetic copolymer.
Rubber material selection guide hnbr or highly saturated nitrile. Nitrile butadiene rubber is a family of unsaturated copolymers of 2propenenitrile and various butadiene monomers 1,2butadiene and 1,3butadiene. Hydrogenated nitrile rubber hnbr properties depend upon the acrylonitrile content and the degree of hydrogenation of the butadiene copolymer. The properties of these rubber compounds are determined by its acn content. Nitrile rubber nbr is commonly considered the workhorse of the industrial and automotive rubber products industries. In addition, it can offer good resistance to alkalis and acids.
The mechanical response of nitrile rubber can be tested in many different ways. Mechanical and physical properties of nanosilicanitrile butadiene. The nitrile rubber properties that are listed below are for our most popular nitrile 70 durometer 70a rubber material compound. Nitrile rubber nbr, also called nitrilebutadiene rubber, an oilresistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene. The resulting butadiene rubber material is not just oil resistant, but also features good tear and abrasion resistance. Carboxylated nitrile butadiene rubberhybrid filler composites show the typical shape of a spectrum, which was recorded from a cellulose material. Pdf investigation of physical, mechanical and biodegradation. Dmr nbr is a black nitrile butadiene rubber, commonly referred to as nbr, nitrile or buna. Acrylonitrilebutadiene rubber nbr properties and applications nitrile rubber nbr is commonly considered the workhorse of the industrial and automotive rubber products industries. Nitrilebutadiene rubber nbr rubber, bunan irp plant.
Rubber material selection guide nbr nitrile or buna n. About nbr this type of synthetic rubber is used in applications requiring resistance to. It can be produced by freeradical emulsion polymerization of butadiene with 15 to 45 percent acylonitrile either hot hot rubber or cold cold rubber. Flush eyes thoroughly with water, taking care to rinse under eyelids. Nitrilebutadiene rubber nbr is particularly known for its excellent heat. Preparation and mechanical properties of nitrile butadiene. Carboxylated nitrile butadiene rubberhybrid filler composites. Nitrile nbr nitrile often referred to as bunan rubber or perbunan is the most commonly used elastomer in the seal industry.
Material safety data sheet acrylonitrilebutadiene rubber. By selecting an elastomer with the appropriate acrylonitrile content in balance with other properties, the rubber compounder can use nbr in a wide variety of application areas. By selecting an elastomer with the appropriate acrylonitrile content in balance with other properties, the rubber compounder can use nbr in a wide variety of application areas requiring oil, fuel, and chemical resistance. Reinforcement effect of nanocellulose on thermal stability of nitrile. Butyl has poor resistance to aromatic hydrocarbons e. Nitrile nbr rubber polymer products arp materials inc.
Arlanxeo is one of the biggest producers of nbr worldwide. This is due to nitriles compatibility with most environments as well as its relative cost compared to other rubber materials. In handbook of antiblocking, release, and slip additives third edition, 2014. Influence of microstructure in nitrile polymer on curing characteristics. The tensile and tear mechanical properties are much higher than that of neat nbr. Nitrile rubber nbrclay nanocomposites were prepared by cocoagulating the nbr latex and clay aqueous suspension. The decomposition temperature of the nanocomposites increases slightly. Nitrile rubber belongs to the family of unsaturated copolymers of acrylonitrile and butadiene. The auto industry is far from the only beneficiary of nitrile rubber though.
Structure and properties of nitrile rubber nbrclay. Here you will find our nitrile specifications chart which can also be downloaded in pdf. Nitrile often referred to as bunan rubber or perbunan is the most commonly used elastomer in the seal industry. Material safety data sheet acrylonitrile butadiene rubber msds no. Nbr is commonly extensive use in petroleum and automobile industries. Preparation and properties of nitrile rubbermontmorillonite nanocomposites via latex blending article pdf available in journal of materials science 4122. Mechanical and morphological properties of polypropylene. A typical carbon black reinforced hydrogenated nitrile butadiene rubber hnbr was exposed to a mix of hydrocarbons toluene, heptane and cyclohexane at elevated temperatures and pressure in order to chemically age the material. It is commonly used to make hoses, seals, gloves, and many other industrial products.
Nitrile rubbers are broadly defined as copolymers of a diene and a vinyl unsaturated nitrile. The effects of different particle sizes of recycled nitrile glove rnbrg on curing characteristics and physical properties of natural rubberstyrene butadiene rubberrecycled nitrile glove nr. Nbr6260 acrylonitrile butadiene rubber product code. Nitrile rubber is a copolymer of butadiene and acrylonitrile. Dec 19, 2016 german chemists, working for ig farben, patented a group of acrylonitrilebutadiene copolymers in 1934 while buna n was produced in the united states during world war ii as grn government rubbernitrile. Nt 52 physical properties nominal units hardness astm d 2240, 23 c 6575 shore a2 tensile strength astm d 412, 23 c 102 kgcm2 elongation at break astm d 412, 23 c 250 % compression set astm d 395, 100 c, 22 h, 25 % rubber compound to meet your specific application and performance requirements, please contact rahco rubber, inc. Trade names include perbunan, nipol, krynac and europrene.
Nitrile rubber can generally be used down to about 30c but special grades of nbr can work at lower temperatures too. Paper open access tensile and oil resistance properties of. Nitrile rubber is generally resistant to aliphatic hydrocarbons but, like natural rubber, can be attacked by ozone, ketones, esters and aldehydes. Nbr ozoneresistant properties and electrical insulation properties bad. The example shown here used uniaxial compression at different strain rates and strain cycles.
It has the highest thermal conductivity and a moderately high tensile strength among rubber. Acrylonitrile butadiene rubber nbr nitrile rubber nbr. Material safety data sheet acrylonitrilebutadiene rubber msds no. Nitrile butadiene rubber nbr is a family of unsaturated copolymers of 2propenenitrile and various butadiene monomers 1,2 butadiene and 1,3 butadiene. It consists of polybutadiene, an elastomer elastic polymer built up by chemically linking multiple molecules of butadiene to form giant molecules, or polymers. Interfacial layers were formed on the surfaces of molds used with nitrile butadiene rubber compounds. Component peak a appears from saturated hydrocarbons c x h y. Nitrile butadiene rubber nbr is a family of unsaturated copolymers. This is due to nitrile s compatibility with most environments as well as its relative cost compared to other rubber materials. Material properties hnbr 80 hsn80, hnbr 80 duro material code. Acrylonitrile content of 26% of the small rubber eye glass transition temperature tg 52 c, crisp temperature 47 c, and acrylonitrile content of 40% of the nitrile rubber glass transition temperature of 22 c. Urm universal rubber manufactury nitrile rubber nbr. To maintain the properties of nitrile rubber, store in a cool, dry place with temperature below 75f.
Nitrile rubber nbr, acrylonitrile butadiene rubber categories. Rubber component design has remained a tedious work because of poor material models inadequately representing hyperelastic and viscohyperelastic behaviour. The organic filler originated from the olive husk powder ohp. Mechanical and physical properties of nanosilicanitrile butadiene rubber composites cured by gamma irradiation article pdf available in egyptian journal of petroleum july 2017 with 111 reads. The polymer contains no nitrosamines or substances that may be a source of nitrosamines. This chapter will focus primarily on emulsionpolymerized copolymers of 1, 3 butadiene and acrylonitrile, which represent the bulk of the commercially available nitrile elastomers.
Pdf properties of natural rubberstyrene butadiene rubber. Carbon black cb is used to enhance the mechanical properties of nitrile butadiene rubber nbr compounds compared with unfilled compounds. Butadiene chemical name polyisoprene styrene butadiene isobutylene isoprene ethylene propylene butadiene. Chakrit sirisinha department of chemistry and center of excellence for innovati. They have rather better oil and chemical resistance than nitrile rubber and can withstand much higher temperatures. Specifically, the tensile and tear mechanical properties of the nbrlayered silicates increase by 200 and 60%, respectively. Synthetic polybutadiene rubber br1243 nd is a product of polymerization of butadiene in solution in the presence of rareearth metalbase catalysts with addition of an antioxidant, which contains at least 96% of 1,4cisbonds.
Pdf the effects of different particle sizes of recycled nitrile glove rnbrg on curing characteristics and physical properties of natural. Rubber material selection guide nbr nitrile or buna n robinson. It has the special property of being resistant to hydrocarbon liquids. Nitrile rubber is made by combining butadiene and acrylonitrile into one single compound through a chemical reaction process.