Search results for "HNBR"

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Eröffnungsfeier des Passagierverkehrs in Riga vom neuen Bahnhof "Riga-Glawnaja" (Haupt-Bahnhof) über die neue Düna-Eisenbahnbrücke

1914

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Dzelzceļu būveЖелезнодорожные узлы - РигаEisenbahnbrücke - RigaRailway engineering:TECHNOLOGY::Civil engineering and architecture::Building engineering [Research Subject Categories]Railway Bridge - RigaDzelzceļa tilts (Rīga Latvija)Eisenbahnen - Geschichte (Lettland)Dzelzceļa līnijas - atklāšana (Latvija Rīga)Железнодорожные путиDzelzceļi - projektēšana un celtniecība (Latvija Rīga)Latvijas dzelzceļš - vēsture
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Long-term ISO 23936-2 sweet oil ageing of HNBR

2021

Abstract A hydrogenated nitrile butadiene rubber (HNBR) compound is subjected to ageing in a simulated oil and gas environment in accordance with ISO 23936-2 standard at two elevated temperatures (130 °C and 150 °C) for a period of up to 9 months. Shore D hardness, thermal expansion, dynamic mechanical analysis (DMA), Fourier transform infrared (FTIR) spectroscopy, compression and compression set (CS) measurements are made before and after the chemical exposure. The hardness, modulus at short times, degree of relaxation and CS increases while the coefficient of thermal expansion in HNBR tends to decrease with ageing time and temperature. Temperature is shown to impose a greater effect on th…

Materials sciencePolymers and PlasticsISO 23936-2Organic Chemistry:Plast- og komposittmaterialer: 523 [VDP]Compression setViscoelasticityContext (language use)Material degradationDynamic mechanical analysisHNBRThermal expansion:Polymer and plastics: 523 [VDP]TP1080-1185ddc:540Stress relaxationShore durometerPolymers and polymer manufactureComposite materialGlass transitionSweet oil ageingElastic modulus
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