A Predictive Instrument for Sensitive and Expedited Measurement of Ultra-Barrier Permeation
Jianfeng Wanyan,
Kun Cao,
Zhiping Chen,
Yun Li,
Chenxi Liu,
Runqing Wu,
Xiao-Dong Zhang,
Rong Chen
Affiliations
Jianfeng Wanyan
State Key Laboratory of Digital Manufacturing Equipment and Technology & School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Kun Cao
State Key Laboratory of Digital Manufacturing Equipment and Technology & School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Zhiping Chen
State Key Laboratory of Digital Manufacturing Equipment and Technology & School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Yun Li
State Key Laboratory of Digital Manufacturing Equipment and Technology & School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Chenxi Liu
State Key Laboratory of Digital Manufacturing Equipment and Technology & School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Runqing Wu
State Key Laboratory of Digital Manufacturing Equipment and Technology & School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Xiao-Dong Zhang
School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Corresponding authors.
Rong Chen
State Key Laboratory of Digital Manufacturing Equipment and Technology & School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Corresponding authors.
The reliable operation of flexible display devices poses a significant engineering challenge regarding the metrology of high barriers against water vapor. No reliable results have been reported in the range of 10–6 g∙(m2∙d)−1, and there is no standard ultra-barrier for calibration. To detect trace amount of water vapor permeation through an ultra-barrier with extremely high sensitivity and a greatly reduced test period, a predictive instrument was developed by integrating permeation models into high-sensitivity mass spectrometry measurement based on dynamic accumulation, detection, and evacuation of the permeant. Detection reliability was ensured by means of calibration using a standard polymer sample. After calibration, the lower detection limit for water vapor permeation is in the range of 10–7 g∙(m2∙d)−1, which satisfies the ultra-barrier requirement. Predictive permeation models were developed and evaluated using experimental data so that the steady-state permeation rate can be forecasted from non-steady-state results, thus enabling effective measurement of ultra-barrier permeation within a significantly shorter test period.
