Take ceramic fiber products as new type of coal cup pads to determine the plastometric indices,and the possibility of replacing the traditional asbestos round pads is discussed through experimental study.The results show that the maximum thickness(Y value)of the plastic layers measured by using the new type of coal cup pad of both manual method and automatic methodare within the uncertainty range of the Certified Reference Material.There is no significant difference in the accuracy and precision of the maximum thickness(Y value)measured by the new type of coal cup pads and the asbestos round pads,and the two different materials of coal cup pads can replace each other.The final shrinkage(X value)measured by new type of coal cup pads are systematically higher than that measured by the asbestos round pads,but its differences are within the reproducibility limits specified in GB/T 479-2016.The volume curve of the new type of coal cup pads are consistent with that of the traditional asbestos round pads.
plastometric indicesnew typecoal cup padsubstitutability
NETL
NSTL
万方数据
维普
