| 摘要 |
A toothed belt is provided that has excellent environment resistance, high load resistance, high stiffness, and achieves high accuracy, light weight, compactness and low noise.;A toothed belt is provided with a belt body including a plurality of core wires juxtaposed in the width direction of a rubber portion, a plurality of tooth rubber portions formed on one surface of the belt body, and a tooth cloth covering the surface of the tooth rubber portions. The rubber portion contains dioctyl sebacate and trimellitic acid ester in a mass part ratio of 1:19 to 1:1, the mass percentage of the dioctyl sebacate to the whole quantity of the rubber portion is less than 4 mass %, and the mass percentage of the total quantity of the dioctyl sebacate and the trimellitic acid ester to the whole quantity of the rubber portion is in a range from 4 mass % to 8 mass %. |
| 主权项 |
1. A toothed belt, comprising:
a belt body formed of a rubber portion containing hydrogenated nitrile rubber and a polymer alloy formed by dispersing zinc methacrylate in the hydrogenated nitrile rubber, and in which a plurality of core wires are embedded; a tooth rubber portion more than one of which is juxtaposed on at least one surface of the belt body; and a tooth cloth portion formed by impregnating a cloth with a rubber composition containing hydrogenated nitrile rubber, and covering the tooth rubber portion, wherein the rubber portion contains dioctyl sebacate and trimellitic acid ester in a mass part ratio of 1:19 to 1:1, a mass percentage of the dioctyl sebacate to a whole quantity of the rubber portion is less than 4 mass %, and a mass percentage of a total quantity of the dioctyl sebacate and the trimellitic acid ester to the whole quantity of the rubber portion is in a range from 4 mass % to 8 mass %. |
