Journal of Shanghai University(Natural Science Edition) ›› 2021, Vol. 27 ›› Issue (4): 677-685.doi: 10.12066/j.issn.1007-2861.2174

• Research Articles • Previous Articles     Next Articles

Development of high-accuracy water-vapor transmission rate test model using electrical method

LI Zewen1,2, ZHANG Jianhua1,2, GUO Aiying2()   

  1. 1. School of Mechatronics and Automation, Shanghai University, Shanghai 200444, China
    2. Key Laboratories of Advanced Display and System Application, Shanghai University, Shanghai 200444, China
  • Received:2018-11-27 Online:2021-08-20 Published:2021-07-22
  • Contact: GUO Aiying E-mail:gayshh@shu.edu.cn

Abstract:

A high-precision problem of the traditional electrical method for determining the water-vapor transmission rate (WVTR) was analysed, and a high-accuracy WVTR test model with current distribution characteristics correction was developed. Based on the test model, a complete and simple WVTR test system was designed. The system hardware required high-adaptive fixtures for easy maintenance and a fully enclosed test environment, and the software included multi-threading, time-error compensation, and adaptive correction algorithms. The theoretical analysis and experimental test results showed that the modified WVTR test model and system satisfied the design requirements of low costs, high precision, and high accuracy.

Key words: encapsulation, water-vapor transmission rate (WVTR), electrical method, error compensation

CLC Number: