Friction transmission belt

Details Friction transmission belt Friction transmission belt

F - Mech Eng,Light,Heat,Weapons

16

G

F16G 1/00 (2006.01) C08K 7/22 (2006.01) C08L 21/00 (2006.01) F16G 1/08 (2006.01) F16G 5/20 (2006.01)

Patent

CA 2679037

A V-ribbed belt (10) includes a lower rubber layer (12), an adhesive rubber layer (16), and a canvas (22). The lower rubber layer (12) contains short fibers (14) a part of which is projecting from the friction surface (12S) of the lower rubber layer (12). In the lower rubber layer (12), generation of abnormal noise is prevented when the V-ribbed belt (10) is used by using FEF which is carbon black having an average nitrogen surface area of 49 m2/g or less (ASTM D1765-01) as a reinforcement agent, and by providing minute unevenness on the friction surface (12S). Furthermore, appropriate surface roughness is maintained even after the short fibers (14) projecting from the friction surface (12S) have worn down by employing the reinforcement agent, and generation of abnormal noise can be suppressed.

La présente invention concerne une courroie striée (10) comprenant une couche inférieure en caoutchouc (12), une couche adhésive en caoutchouc (16) et de la toile (22). La couche inférieure en caoutchouc (12) contient de la fibre courte (14), certaines de ces fibres dépassant de la surface (12S) de la couche inférieure en caoutchouc. Dans la couche inférieure en caoutchouc (12), on utilise comme agent renforçant du FEF qui est un noir de carbone dont la superficie moyenne en azote n'excède pas 49 m2/g selon ASTM D1765-01, ce qui permet de produire une fine irrégularité superficielle (12S) de la couche inférieure en caoutchouc. Cela permet d'éviter la production de bruit pendant l'utilisation de la courroie striée (10). En outre, grâce à l'utilisation de l'agent de renforcement, on arrive à conserver une rugosité superficielle appropriée, même après disparition par usure de la fibre courte (14) dépassant de la surface (12S) de la couche inférieure en caoutchouc, et donc à bloquer la production de bruit.

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