Get information about nitrile polymer including physical, mechanical, and thermal properties as well as environmental and chemical resistances. Grades with high acrylonitrile content have better oil resistance whereas low acrylonitrile content gives better low temperature flexibility and resilience. 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. It will tolerate a large amount of elongation 400% before breaking and has excellent tear strength 40 nmm. Denka neoprene 571 copolymer of chloroprene and sulfur. Ionic elastomers based on carboxylated nitrile rubber xnbr and. Following is the list of nitrile rubber properties. Blending in latex form of natural rubber and nitrile latices. It can be produced by freeradical emulsion polymerization of butadiene with 15 to 45 percent acylonitrile either hot hot rubber or cold cold rubber. Use adhesives in well ventilated area and always consult the material safety data sheet for specific precautions. Nitrile rubber nbrclay nanocomposites were prepared by cocoagulating the nbr latex and clay aqueous suspension. Its main applications are in fuel hoses, gaskets, rollers, and other products in which oil resistance is required.
Nitrile rubber can generally be used down to about 30c but special grades of nbr can work at lower temperatures too. Black nitrile rubber sheet has generally good physical properties including mechanical strength. Sheet rubber properties resistance properties ratings are in decreasing order excellent, good, fair, poor physical properties availability tolerance on width width tolerance mechanical environmental thickness tolerance tolerance on thickness. The chemical and physical properties of nitriles are given belownitriles are somewhat like colorless solids and liquids having unique odors. Timco rubber can work with your business to design and provide nitrile parts customized for the specific needs of your applications. The nitrile rubber properties that are listed below are for our most popular nitrile 70 durometer 70a rubber material compound.
Nitrile rubber nbr, acrylonitrilebutadiene rubber categories. Nitrile 70, nitrile rubber properties, nitrile specifications mykin inc. It is extracted in the form of latex from the bark of the hevea tree. They have boiling points measuring between 82118 c. The rubber is collected from the latex in a series of steps involving preservation, concentration, coagulation, dewatering, drying, cleaning, and blending. A flex class 1 nitrile sheet thickness mm 6 9 16 19 25 32 packing details length roll 40 mtrs. For further information on the material or this msds. With appropriate commercial practices, the nitrile rubber sheet material product is safe to handle and in storage.
Pdf the nitrile rubber nbrunmodified montmorillonite nammt clay nanocomposites were prepared by latex blending method followed by melt mixing of. Nitrile bunan nbr rubber is an economical material that provides high resistance to oils and hydrocarbon based fluids. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic. Natural rubber is composed of the polymer polyisoprene. What links here related changes upload file special pages permanent link. Properties, behavior and uses natural rubber nr is the most often used rubber in the industry. 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. The effect of acrylonitrile content % acn level within the elastomers was evaluated as well. Copolymer of chloroprene and sulfur, dupont neoprene 571 liquid dispersion contains a high modulus copolymer of chloroprene and sulfur made in an anionic colloidal system.
Nitrile nbr nitrile often referred to as bunan rubber or perbunan is the most commonly used elastomer in the seal industry. Pdf effect of nitrile butadiene rubber nbr on mechanical and. Nitrile rubber is resistant to oil, caustics, aliphatic hydrocarbons, and hydraulic fluids. In this study, nitrilebutadiene rubber nbr based nanocomposites reinforced with pvc as a polymeric filler and nife2o4as nanofllers with. Mohammod aminuzzaman supervisor from the department chemical science, faculty of science, and assistant prof. 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. Nitrile rubber nbr nitrile rubber is a synthetic rubber produced by polymerization of acrylonitrile with butadiene. 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. 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 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. This type of rubber has a high tensile strength ranging from 21 to 31 mpa. Martins rubber explain the advantages of natural rubber. Martin bailey, jonathan fisher registered in england no. Nitrile rubber belongs to the family of unsaturated copolymers of acrylonitrile and butadiene.
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. 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 synthetic rubber is also known as nbr, acrylonitrilebutadiene rubber, acrylonitrile rubber, nitrilebutadiene rubber, and nr. For proper adhesion, temperatures must be over 60 of 15oc and must not exceed 120of 49oc. See section 9 of the polycorp rubber lining application manual for specific cementing adhesion notes. Nitrile butadiene rubber nbr is a family of unsaturated copolymers of 2propenenitrile and various butadiene monomers 1,2butadiene. Rubber blending is commercially important because it gives a balance of properties which one rubber alone cannot provide. 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 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. Acrylonitrile butadiene rubber nbr, usually shortened to nitrile, is a unique elastomer. Mechanical and unlubricated sliding wear properties of nitrile.
Nbr is an acrylonitrilebutadiene copolymer, and it is a rubber that excels significantly in oil resistance. For example, the addition of fillers can reinforce or modify properties, or additional plasticizer can increase elongation and lower durometer. Trade names include perbunan, nipol, krynac and europrene. Nr is a polymer of cisisoprene units linked together at 14 positions. In the production of nbr, acrylonitrile ch2chcn and butadiene. The nitrile rubber properties that are listed below are for our most. 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.
Identification of the substancemixture and of the companyundertaking. Effect of nitrile butadiene rubber nbr on mechanical and tribological properties of composite friction brakes. Rubber material selection guide xnbr or carboxylated nitrile. Common name neoprene natural polyisoprene butyl chlorinated butyl buna n sbr hypalon vamac ethylene propylene rubber polyethylene teflon crosslinked polyethylene modified crosslinked polyethylene composition name chlorprene. Investigation and optimization of mechanical properties of nitrile. A preliminary study of morphology and mechanical properties n. Quality industrial rubber goods since 1921 potomac rubber company 9011 hampton overlook capitol heights. Nitrile rubbers are copolymers of butadiene and acrylonitrile. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile acn and butadiene.
Tongcher national metal and materials technology center 114 thailand science park, paholyothin rd. Mechanical and electrical properties of natural rubber and. 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. Rubber material selection guide nbr nitrile or buna n. After the latex is processed, natural rubber becomes an elastomer with excellent mechanical properties. Acrylonitrile butadiene rubber nbr, usually shortened to nitrile, was developed in 1941 as the first oil resistant rubber.
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. Nbr rubber,nitrile rubber properties,applications of nbr. While polyisoprene can also be made synthetically, producing what is known as synthetic natural rubber. Neoprene retains its good physical properties during long term exposure to most oils, greases, gasolines. It is the most widely used and economical elastomer. Here you will find our nitrile specifications chart which can also be downloaded in pdf. Hnbr can be used with a wide range of temperatures 40c to 165c with minimal degradation of the compound. The term has also been applied to copolymers of other dienes andor nitriles.
Nitrile 70, nitrile rubber properties, nitrile specifications. Effect of different nitrile elastomers in down hole. The tribological behaviors of filled nbr were tested by a. Structure and properties of nitrile rubber nbrclay. Pdf preparation and properties of nitrile rubbermontmorillonite.
Typically, a small percentage of other materials including proteins, fatty acids, resins, and inorganic materials are found in natural rubber. In this study, the filled nitrile rubber nbr was prepared with micro glass flake gf. The particulate nature of pvc and the degree of nitrile groups in the nbr are responsible to the pvcnbr blends morphologies leading to an optimization of the mechanical properties when the rubber. Nitrile rubber nbr, an oilresistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene. It is broadly used in automotive parts and industrial goods. Nbr offers excellent resistance to petroleumbased oils and fuels, silicone greases, hydraulic fluids, water and alcohols. Hnbr is widely known for its physical strength and retention of properties after longterm exposure to heat, oils and chemicals. Nitrile rubber nbr is the general term for acrylonitrile butadiene copolymer. Rubber material selection guide xnbr or carboxylated nitrile abbreviation xnbr astm d2000 classification bf, bg. This nitrile 70 durometer 70a specifications chart will help you determine if these nitrile. Natural rubber has excellent tensile, elongation, tear resistance, resilience, and electrical insulation. Rubber is composed of many different ingredients that include the base elastomer, vulcanization agents, fillers and plasticizers.
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