In the sand dust environment, the wear rate of polymer tapes are on the magnitude of 10-6-10-4 and 10-5-10-3 (mm3/N.m) respectively.The wear rate of PEN tape is 4-14 times higher than PI tape.

• 沙尘环境中PI、PEN薄带的磨损率大小分别处于10-6-10-4、10-5-10-3数量级范围，PEN薄带的平均磨损率是PI薄带的4-14倍。