Research on Light-transmitting Polyurethane Elastomer Cathode Materials Applied in Electrostatic Bonding
ZHAO Haocheng1,*, LIU Cuirong2, YAO Zhiguang3, ZHANG Ying1, ZHANG Zhichao1, LIU Qianxiu1
1 Faculty of Energy Chemistry and Materials Engineering, Shanxi Institute of Energy, Jinzhong 030600, Shanxi, China 2 College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China 3 Faculty of Mechanical and Electrical Engineering, Shanxi Institute of Energy,Jinzhong 030600, Shanxi, China
Abstract: Three kinds of transparent polyurethane elastomer electrolyte cathode materials (TPUEEs) for electrostatic bonding are prepared through raw material formulation selection, molecular structure design and synthesis process optimization. Having theamorphous structure, the crystallinity of the materials are low, and their transmittance in the visible region are more than 80%. The TPUEEs are characterized by good heat resis-tance that the 5% thermal decomposition temperatures Td, 5% are higher than 200 ℃. The glass transition temperatures Tg are lower than -40 ℃ showing good flexibility. All TPUEEs have high ionic conductivity meeting the requirements of electrostatic bonding for cathode materials, and the highest value at 70 ℃ (the temperature required for bonding) is reached to 1.9×10-3 S·cm-1 for TPUEE3. The jointing of TPUEEs and aluminum (Al) sheet (TPUEEs-Al) is realized by electrostatic bonding characterized by thermal guidance and dynamic field. A clear intermediate bonding layer of TPUEEs-Al can be observed in the SEM image, in which the bonding strength of TPUEE3-Al can be reached to 0.91 MPa. This study realizes the electrostatic bonding seal of light-transmitting polymer cathode materials, which provides some theoretical basis and reference experience for the application of electrostatic bonding in flexible optoelectronic devices.
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2023, Vol. 37 
