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HIGH-STRENGTH YARN POLYESTER YARN HAVING AN UNUSUALLY STABLE INTERNAL STRUCTURE, AND FIBER-REINFORCED AIR TIRES OBTAINED BY USING THIS YARN.
HIGH-STRENGTH YARN POLYESTER YARN HAVING AN UNUSUALLY STABLE INTERNAL STRUCTURE, AND FIBER-REINFORCED AIR TIRES OBTAINED BY USING THIS YARN.
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机译:具有异常稳定的内部结构的高强度纱涤纶纱,以及使用此纱所获得的纤维增强的空气轮胎。
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摘要
An improved high performance polyester (at least 85 mol percent polyethylene terephthalate) multifilament yarn possessing a novel internal structure is provided. The multifilament yarn of the present invention possesses a high strength (at least 7.5 grams per denier) and an unusually stable internal structure which renders it particularly suited for use in industrial applications at elevated temperatures. As described in detail hereafter the subject multifilamentary material exhibits unusually low shrinkage and hysteresis characteristics (i.e. work loss characteristics) coupled with the high strength characteristics normally associated with polyester industrial yarns. Accordingly, when utilized in the formation of a tire cord and embedded in a rubber matrix, a highly stable tire may be formed which exhibits a significantly lesser heat generation uon flexing.
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