硫酸钡在全钢子午线轮胎下三角胶中的应用

Application of Barium Sulfate in Lower Bead Filler of All-steel Radial Tire

研究硫酸钡在全钢子午线轮胎下三角胶中的应用。结果表明:与生产配方胶料相比,试验配方胶料的F_(L)减小,F_(max)增大,表明试验配方胶料的交联密度增大;试验配方胶料的t_(10)和t_(90)的变化不大,硫化返原略快;与生产配方硫化胶相比,试验配方硫化胶的密度明显增大、邵尔A型硬度略增大、定伸应力相当、拉伸强度略减小,60℃时的损耗因子略减小,导热性能提高。在全钢子午线轮胎下三角胶中使用硫酸钡部分替代炭黑,对胶料性能影响不大,生产成本降低。

The application of barium sulfate in the lower bead filler of all-steel radial tire was studied.The results showed that,compared with the production formula compound,F_(L) of the test formula compound decreased,F_(max) increased and the crosslinking density of the test formula compound increased,the change of t_(10) and t_(90) of the test formula compound was little,and the reversion of vulcanization was slightly faster.Compared with the production formula vulcanizate,the density of the test formula vulcanizate increased significantly,the Shore A hardness increased slightly,the modulus was equivalent,the tensile strength decreased slightly,the loss factor at 60 ℃ was reduced slightly,and the thermal conductive property was improved.The use of barium sulfate as a partial substitute for carbon black in the lower bead filler of all-steel radial tire had little effect on the properties of the compound and the production cost was reduced.