On August 26, 2019, China National Textile and Apparel Council (CNTAC) held a scientific and technological achievement appraisal meeting in Qingdao, Shandong Province for the projects of "Development of Electrostatic Charge Decay Tester" and "Development of Thermal Conductivity and Compressive Heat Resistance Testing System for Protective Clothing", both developed by Shandong Textile Research Institute. Sun Ximin, Deputy Director of the Department of Science and Technology Development of CNTAC, Ji Fang, President of Shandong Textile Research Institute, and other relevant personnel attended the meeting. An appraisal committee consisting of 7 experts including Wu Kefu, Research Fellow of Jilin Textile Metrology Center, and Xing Mingjie, Professor of Qingdao University, was invited for the appraisal meeting.
For the project of "Development of Electrostatic Charge Decay Tester", a dedicated 1200V step voltage generating device, a non-contact high-precision high-voltage electrostatic detection sensor, and an automatic control and data processing system have been developed. The sample is charged through the induction effect, and the changes in surface charge and voltage decay of the sample are detected in real time, with the shielding coefficient calculated automatically. The developed testing instrument complies with the technical requirements of EN 1149-3 Protective clothing - Electrostatic properties - Part 3: Test methods for measurement of charge decay.
For the project of "Development of Thermal Conductivity and Compressive Heat Resistance Testing System for Protective Clothing", systems such as controllable constant temperature heating, high-precision sensor and its calibration based on model establishment and integration technology, non-contact automatic in-position judgment, and dedicated data acquisition and automatic control have been developed. A thermal protective performance evaluation system based on the tolerance of human tissues to pain and second-degree burns has been established. The developed testing instrument complies with the technical requirements of ASTM F1060 Standard Test Method for Evaluation of Conductive and Compressive Heat Resistance (CCHR).
The experts of the appraisal committee listened to the report from the project undertaking unit and watched the on-site instrument demonstration. After inquiry and discussion, the appraisal committee unanimously agreed that the overall technologies of both "Development of Electrostatic Charge Decay Tester" and "Development of Thermal Conductivity and Compressive Heat Resistance Testing System for Protective Clothing" have reached the international advanced level, approved the passing of the scientific and technological achievement appraisal for the two projects, and suggested accelerating their further popularization and application.
