The present invention is directed a pneumatic agricultural or industrial tire (20) comprising a casing (21) and a rubber tread (32A, 32B, 34) disposed radially outwardly of the casing (21), the tread having an inner tread (34) and a plurality of tread lugs (50) projecting radially from the inner tread (34), said casing (21) having at least one component (22, 26, 28), said component comprising textile cord and a rubber composition in contact with the textile cord, the rubber composition comprising
100 parts by weight of at least one diene based elastomer, including from 75 to 15 parts by weight of polybutadiene and 25 to 85 parts by weight of at least one additional diene based elastomer selected from the group consisting of styrene-butadiene rubber, synthetic polyisoprene and natural polyisoprene;
0.1 to 8 parts by weight of at least one accelerator selected from benzothiazoles and dithiophosphates and exclusive of sulfenamides;
1 to 15 parts by weight of at least one resin selected from phenolformaldehyde resins, aliphatic cyclic hydrocarbon resins, and aromatic hydrocarbon resin;
10 to 150 parts by weight of a filler selected from the group consisting of carbon black, silica, and starch/plasticizer composite filler; and
0.3 to 3 parts by weight of sulfur;
wherein each lug has a width in a range of from 2 cm to 10 cm and length in a range of from 2 cm to 60 cm, and a height in a range of from 2 cm to 10 cm, and wherein the tread has a net-to-gross ratio in a range of from 15 to 40 percent as measured around the entire 360° circumference of a normally inflated and normally loaded tire contacting a flat hard surface.
本发明涉及一种充气农业或工业轮胎(20),包括胎体(21)和从胎体(21)径向向外设置的橡胶胎面(32A、32B、34),胎面具有内胎面(34)和从内胎面(34)径向伸出的多个胎耳(50),所述胎体(21)具有至少一个部件(22、26、28),所述部件包括纺织帘线和与纺织帘线接触的橡胶组合物,所述橡胶组合物包括
100 份(按重量计)至少一种二烯基弹性体,包括 75 至 15 份(按重量计)聚
丁二烯和 25 至 85 份(按重量计)至少另外一种二烯基弹性体,该弹性体选自由
丁苯橡胶、合成聚
异戊二烯和天然聚
异戊二烯组成的组;
0.1 至 8 份(按重量计)至少一种
促进剂,该
促进剂选自
苯并噻唑和
二硫代磷酸 酯,但不包括亚
氨基磺酸盐;
1 至 15 份(按重量计)至少一种
树脂,选自
苯酚甲醛树脂、脂肪族环状烃
树脂和芳香族烃
树脂;
10 至 150 份(按重量计)选自碳黑、
二氧化硅和淀粉/
增塑剂复合填料组的填料;以及
0.3 至 3 重量份的
硫;
其中每个胎耳的宽度范围为 2 厘米至 10 厘米,长度范围为 2 厘米至 60 厘米,高度范围为 2 厘米至 10 厘米,并且胎面的净毛比范围为 15%至 40%,该范围是在正常充气和正常装载的轮胎接触平硬表面的整个 360° 圆周上测量的。