Hydrophobic nanoporous material and wetting liquid together comprise a system with promising energy related applications. The mechanism of the interaction between liquid and solid phase is not fully explored. In this paper, based on the quasistatic compression experiments on investigating the mechanical behavior of ZSM-5 zeolite/NaCl solution system, the effects of two key parameters, that is, the pretreatment temperature of ZSM-5 zeolite and NaCl concentration, are parametrically and quantitatively investigated based on Laplace-Washburn equation. Results show that both pretreatment temperature and NaCl concentration raise the infiltration pressure and NaCl can also promote defiltration. The advancing contact and receding contact angle of zeolite-NaCl-air system increase with both pretreatment temperature and NaCl concentration, and the contact angle hysteresis decreases with NaCl concentration. Results may provide fundamental explanation to the nanoconfined liquid behavior and liquid-solid interaction, thus, to smartly control the mechanical properties of the liquid spring and bumpers for energy dissipation function.
The work is supported by International Joint Research Project sponsored by Tsinghua University (20121080050), National Natural Science Foundation of China (11172231 and 11102099), Individual-Research Founding State Key Laboratory of Automotive Safety & Energy, Tsinghua University (ZZ2011-112), DARPA (W91CRB-11-C-0112), National Science Foundation (CMMI-0643726), Chinese Post-Doctor Foundation, Changjiang Scholar Program from Ministry of Education of China, and World Class University Program through the National Research Foundation of Korea (R32-2008-000-20042-0).