The present invention relates to a polyester tire cord, which is made of a polyester fiber, has at least 1.2 g/d of 5% LASE measured by ASTM D885 at 80°C, has at least 1.0 g/d of 5% LASE measured by ASTM D885 at 120°C, and has at least 65% toughness retention at 80°C and 120°C. The tire cord of the present invention has a modulus equivalent to that of rayon even in a high-temperature environment of at least 120°C, and has excellent dimensional stability and heat resistance, and thus can be advantageously applied to a high-performance tire.
La présente invention concerne un câble en polyester pour pneu, qui est constitué d'une fibre de polyester, présente au moins 1,2 g/d de 5 % LASE mesuré selon la norme ASTM d885 à 80 °C, présente au moins 1,0 g/d de 5 % LASE mesuré selon la norme ASTM d885 à 120 °C, et présente au moins 65 % de maintien de la ténacité à 80 °C et 120 °C. Le câble de pneu de la présente invention présente un module équivalent à celui de la rayonne même dans un environnement à température élevée d'au moins 120 °C, et présente une excellente stabilité dimensionnelle et une excellente résistance à la chaleur, et peut ainsi être avantageusement appliqué à un pneu haute performance.
본 발명은 폴리에스터 원사로 구성되고, 80℃에서 ASTM D885에 의해 측정되는 5% LASE가 1.2 g/d 이상이고, 120℃에서 ASTM D885에 의해 측정되는 5% LASE가 1.0 g/d 이상이며, 80℃ 및 120℃에서의 터프니스 유지율이 65% 이상인 것을 특징으로 하는 폴리에스터 타이어 코드에 관한 것으로, 본 발명의 타이어 코드는 120℃ 이상의 고온 환경에서도 레이온과 대등한 탄성률을 갖고, 치수안정성 및 내열성이 우수하여 고성능 타이어에 유리하게 적용될 수 있다.
POLYESTER TIRE CORD HAVING EXCELLENT HEAT RESISTANCE, AND TIRE COMPRISING SAME
CÂBLE EN POLYESTER POUR PNEU AYANT UNE EXCELLENTE RÉSISTANCE À LA CHALEUR, ET PNEU LE COMPRENANT
내열성이 우수한 폴리에스터 타이어 코드 및 그를 포함하는 타이어
2021-03-11
Patent
Electronic Resource
Korean
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / D01F Chemische Gesichtspunkte bei der Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern , CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS / D02G CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS , Kräuseln oder Texturieren von Fasern, Fäden, Garnen oder Zwirnen |
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