国产子午线轮胎专用天然橡胶应用试验

通过对国产子午线轮胎专用天然橡胶的化学分析、物理性能检验和进行胎面胶、胎体胶的小配合、大配合胶料试验，并与进口天然橡胶试验结果进行对比，研制了一批用国产子午线轮胎专用天然橡胶生产的９．００Ｒ２０全钢子午线轮胎作里程试验。试验结果表明，国产专用天然橡胶只要适当降低塑性初值（Ｐ＿０）和生胶门尼粘度，按国际通用标准进行包装，完全可以代替马来西亚标准橡胶（ＳＭＲ１０和ＳＭＲ２０）用于子午线轮胎生产中。

Application Experiment of Domestic Natural Rubber Special for Radial Tires

The chemical analysis,physical property test,compounding experiment of tread and carcass stocks in laboratory and production were carried out of domestic NR speical for radial tires from which a number of 9. 00R20 all steel radial tires were made. The results were compared with those of imported NR. The road test was made on the test tires. The test results showed that domestic NR could replace Standard Malaysian Rubber (SMR 10 and SMR 20) for radial tires provided that its initial plasticity and viscosity decreased properly and its packing was in accordance with the relative international standard.