阻隔材料静电屏蔽性能测试方法的实验研究

分析了目前国际上有关静电屏蔽性能测试的标准方法,针对我国目前缺少与国军标GJB2605-96配套的测试装置,作者参照美国电子工业协会标准EIA-541研制了一套静电屏蔽性能测试装置,并将此与美制静电屏蔽测试表ACL-500进行了对比实验,结果表明:在试验基板接地与不接地的两种情况下,试样内感应的峰值电压相差很大;试样的尺寸大小对测试结果影响不大;为了保证所测试的结果具有可比性,必须保持电容探头离试样袋口相等的距离。

EXPERIMENTAL STUDY ON TEST METHODS'OF ELECTROSTATIC SHIELDING PROPERTY OF BARRIER MATERIAL

In this paper, current world - wide test methods on electrostatic shielding property of barrier materials are analyzed. Due to the lack of a complete test set for GJB 2605-96, we have built a test unit on electrostatic shielding property refered to the standard EIA-541 (Electrostatic Institute of America). Contrast test has been carried out by using self - built test unit with electrostatic shielding test meter ACL-500 made in U. S. A. The result shows that there are great differences in the induced voltages inside samples under test, in the cases of test base grounding and not grounding. And there is a little influence caused by dimensions of samples. In order to make a comparison of test results, equal distance between capacitance detector and open side of test bag must be assured in each test.