Toothed belt

The belt main body (11) of the toothed belt (B) is formed from a rubber composition. The rubber composition contains a hydrogenated nitrile rubber having a bound acrylonitrile content of 15-30% by mass, has a hardness of A70-A80 at a test temperature of 25 DEG C, and has a cold resistance index of 0...

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Bibliographische Detailangaben
Hauptverfasser:	MEKI YOSHITAKA, SHINDO MASAHIRO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES BLASTING CHAINS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ENGINEERING ELEMENTS AND UNITS FITTINGS PREDOMINANTLY USED THEREFOR GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WEAPONS
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Beschreibung
Zusammenfassung:	The belt main body (11) of the toothed belt (B) is formed from a rubber composition. The rubber composition contains a hydrogenated nitrile rubber having a bound acrylonitrile content of 15-30% by mass, has a hardness of A70-A80 at a test temperature of 25 DEG C, and has a cold resistance index of 0.25 or less as defined by formula (I) after being exposed to an environment at a temperature of 140 DEG C for 144 hours and thermally aged. Cold resistance index = 5% modulus at a test temperature of-40 DEG C/hardness at a test temperature of 25 DEG C. 齿形带(B)的带主体(11)由橡胶组合物形成。该橡胶组合物中含有结合丙烯腈量在15质量％以上30质量％以下的氢化丁腈橡胶，且在试验温度为25℃时的硬度在A70以上A80以下，且在140℃的温度环境中暴露144小时而热老化后，由下述式(I)定义的耐寒指标在0.25以下，耐寒指标＝试验温度为-40℃时的5％模量/试验温度为25℃时的硬度(I)。