国产高模量低收缩聚酯帘线在高性能轿车子午线轮胎中的应用

Application of domestically produced DSP to performance tire

研究了国产尺寸稳定性较佳的高模量低收缩聚酯帘线 (简称DSP)在高性能轿车子午线轮胎中的应用。试验结果表明 ,国产DSP帘线的尺寸稳定性好 ,经耐久性和高速性能试验后轮胎外直径只比试验前膨胀 0 3%～ 0 5 % ,断面宽变化率绝对值为 0 2 %～ 0 7% ;其热收缩率小 ,在高温硫化下可以不用后充气 ;国产DSP帘线的强力保持率和滞后损失率均与进口 1X30帘线接近 ;试制的采用DSP轮胎的耐久性达到 2 0 0h ,高速性能达到 2 90km·h- 1 。

The application of domestically produced DSP to performance tire was investigated.The test results showed that the overall diameter of test tire after endurance and speed tests was only 0.3%～0.5% greater than that of tire before tests,and the absolute value of sectional width changed by 0.2%～0.7%;the test tire didn′t need post-cure because of lower thermal shrinkage of domestically produced DSP;the strength retension and hysteresis of domestically produced DSP cord were similar to those of imported 1X30 DSP cord;and the endurance of test DSP tire reached 200 h and the speed reached 290 km·h -1,which could meet the requirements for V speed-rated tire.