Transcription of NBR RUBBER ITS CLASSIFICATION AND SELECTION …
1 PRODUCT DEVELOPMENT INFORMATIONVOLUME 1 ISSUE 10 MARCH 20121 of 4 NBR RUBBER ITS CLASSIFICATION ANDSELECTION CRITERIAACRYLONITRILE BUTADIENE RUBBER POPULARY KNOWN AS NITRILE RUBBER Plays an vital role in the RUBBER industry in designing several important products having usages in wide range of industries including Automotive, Industrial, Consumer, Textile, Aerospace, construction & Machinery industry, Food & Processing Nitrile RUBBER (NBR) is classified into Three Categories based on the Acrylo Nitrile content (ACN Content)
2 Later in Modern days, with the addition of Very low ACN content NBR RUBBER and Ultra High ACN content NBR RUBBER is also added in this 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 ACN CONTENTLOW NITRILEMEDIUM ACN CONTENTMEDIUM NITRILEHIGH ACN CONTENTHIGH NITRILEI nfluence of the acrylonitirle content on the glass transition temp.
3 Of Nitrile NITRILE RUBBER WITH LOW CONTENT MEDIUM CONTENT HIGH CONTENT Glass Transition Temp. Tg oC -45 -34 -20 Low Temperature, TR, oC -28 -20 -10 Compression Set, @ -20oC 40% 45% 45% Compression Set, @ RT 8% 8% 8% Compression Set, @ 120oC 45% 50% 55% Heat Resistance Temp., After 5 hr. 170oC 180oC 190oC Heat Resistance Temp., After 70 hr. 140oC 145oC 150oC Heat Resistance Temp. After 1000 hr. 110oC 115oC 120oC Working Temperature, in oC 125 125 125 Swelling in ASTM OIL#3, For 70 Hr. @ 100oC 25% 10% 5% Swelling in Fuel C, for 70 hr.
4 @ RT 45% 35% 25% PRODUCT DEVELOPMENT INFORMATIONVOLUME 1 ISSUE 10 MARCH 20122 of 4 INFLUENCE ON THE EFFECT OF ACN/BUTADIENE RATIO IN NITRILE RUBBER PROPERTIESWITH INCREASING ACN CONTENT, THE FOLLOWING PROPERTIES INCREASESP rocessabilityRate Of VulcanisationOil Resistance, Fuel & Grease ResistancePermanent Set(ie. Higher Compression Set)DensityHysteresis LossCompatibility With Other Polar Polymers Viz. Pvc, Phenolic Properties Tensile Strength, Modulus, HardnessWith Increasing ACN content , the following property decreasesLow Temperature FlexibilityResilienceGas PermeabilityNBR RUBBER IS DESIGNATED BY THE FOLLOWING LETTERS IN THE SAE j200 / ASTM D 2000 LINE CALL OUT's in the specification as.
5 NITRILE RUBBERBF , BG, BK, CHOVERALL CHARACTERISTICS OF A PROPERLY COMPOUNDED NBR RUBBER TYPES & ITS EXPECTED PROPERTIES PRODUCT DEVELOPMENT INFORMATIONVOLUME 1 ISSUE 10 MARCH 20123 of 4 SOME OF THE END PRODUCTS OF THE VERSATILE APPLICATIONS OF NITRILE RUBBERSELECTION CHART OF NITRILE RUBBERSPRODUCT DEVELOPMENT INFORMATION4 of 4 Ram ChCompany "Century Towers", 46, Barnaby Road, Kilpauk, Chennai - 600 010 Tel : +44 - 4353 9040 / 41 / 42 Fax : +44 - 4330 7050 Email : |Mumbai | 09821216311 | | | 044 | | | NOTE: * PERBUNAN & KRYNAC are the brand name of Nitrile RUBBER & manufactured by our principal SELECTION CHART OF NITRILE RUBBERSVOLUME 1 ISSUE 10 MARCH 2012
