IRHD

AcronymDefinition
IRHDInternational Rubber Hardness Degree
IRHDInactive Rheumatic Heart Disease
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Instrumentation: Hardness testers H14 (IRHD); H17A (Shore), micro hardness testers H12 (IRHD), H17M (Shore); densimeter X22B; rapid plastimeter P14; compression stress relaxometer C11; aging chamber 07E, 014; DeMattia flex testing machine F15/16, Mooney viscometer V3, thickness gauges; compression set, plasticity and resilience; specimen preparation equipment
The highest difference of -1.5 IRHD was found to be in the NBR material with melt mixer samples belonging to the Melt mixer N-20 curing time batch.
Changes in the samples of the qualities of physical-- mechanical properties following a 12 month attack of MERO--Jet A--1 mixture Solution Sample content Hardness, Elongation, Strength, MERO/Jet IRHD % kPa A-1, wt.
Feasterville, PA 19053 (215)-355-6900 Fax: (215)-354-1803 Website: www.hardnesstesters.com Email: newage.info@ametek.com Rick Wismer, sales manager Instrumentation: Hardness testers for IRHD and durometer scales in both regular and micro, built in SPC, RS232 output, fully automated for reduced operator influence Nikon Inc., Instrument Group 1300 Walt Whitman Rd.
Properties Co-BR Nd-BR Co/Nd-BR Mooney viscosity (ML1 + 4@100[degrees]C) BR gum 41.1 42.9 42.4 Compounded BR 66.4 77.4 83.9 Curing properties at 160[degrees]C [M.sub.L] (dN m) 3.36 3.29 3.11 [M.sub.H] (dN m) 18.3 20.2 20.1 [ts.sub.1] (min) 3.18 2.75 3.43 [tc.sub.90] (min) 10.6 9.63 10.4 Mechanical properties Tensile strength (MPa) 15.2 18.8 19.2 Elongation at break (%) 400 440 470 Hardness (cure @145[degrees]C) (IRHD) 62 66 66 Rebound (%) 54 57 60 Abrasion (%wt loss) 8.8 7.9 8.3 FIG.
MAPRA Technik Co--BAREISS For Bareiss of Germany - IRHD & SHORE hardness testers, Abrasion & Rebound testers.
To complete the mechanical properties, IRHD hardness was measured using a Bareiss Digi Test in accordance with the Method N test stipulated by ISO 48.
Instrumentation: Flardness testers F114 (IRHD); H17A (Shore), micro hardness testers H12 (IRHD), H17M (Shore); densimeter X22B; rapid plastimeter P14; compression stress relaxometer C11; aging chamber 07E, 014; DeMattia flex testing machine F15/16, Mooney viscometer V3, thickness gauges; compression set, plasticity and resilience; specimen preparation equipment
Feasterville, PA 19053 215 355-6900 Fax:215 354-1803 Website: www.hardnesstesters.com Email: newage.info@ametek.com Rick Miller, sales manager Instrumentation: Hardness testers for IRHD and durometer scales in both regular and micro, built in SPC, RS232 output, fully automated for reduced operator influence