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ASTM D5288使用多电极材料测定电绝缘材料追踪摄影系数标准试验方法
日期:2012-02-07 17:56
at the University of Cincinnati, NEMA laboratory. It is felt by the members of the Industrial Laminates Section of NEMA that using copper electrodes gives a more realistic value for a tracking index, related to the resin system used to reinforce the substrate of a laminate. In general, tracking tests made with copper electrodes tend to give lower values than platinum electrodes in the same type of test. It is a fact that copper is more widely used than platinum for electrical conductors.
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