| 摘要 |
<p>The invention relates to a rubber and leather fiber compound and to a process for preparing the same. The claimed compound comprises Carom 1502 type rubber and Carom 60 type rubber in an amount of 2000...2500 g and 150...300 g, respectively, 100 g of ZnO, 30 g of stearine, 390 g of rosin, 400...600 g of chrome leather waste, having the particle dimension ranging from 0.01 to 1 mm, 500...750 g of Ultrasil VN3, 0...250 g of precipitated chalk, 12,5 g of PBN type antioxidant and 145 g of curing agents. The claimed process consists in plastifying the two types of rubber for 10...20 min on a roll, the cylinders having a temperature t= 35°C and t= 40°C, the speed being of 27 rpm, the distance between the rolls being of 1.5...2.5 mm, the supply voltage being of 380 V, adding ZnO, stearine and rosin, stirring continuously for 2...5 min and adding half of the amount of waste leather, and after 10...15 min of stirring, the remainder of waste together with the Ultrasil VN3 being added, adding further the precipitated chalk and the PBN type antioxidant after 10...20 min of stirring, the mixture being stirred up to homogenization, adding further the couple of curing agents and the mixture being refined for 5...10 min.</p> |
