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A cosmetics case having a dual sealing structure is designed to retain the volatile solvents in the cosmetic and hence ensure a longer life for the cosmetics. Both the foldable mirror and the lid, containing the make-up tools are sealed.
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In the present work, preliminary results of different hydrophobic surface treatments for gas diffusion layer (GDL) for PEM fuel cells are presented. This hydrophobic coating consists of new perfluoropolyether (PFPE) derivatives, in comparison to standard polytetrafluoroethylene (PTFE) dispersions. E
## Abstract Gas diffusion layers (GDLs) in the proton exchange membrane fuel cells (PEMFCs) enable the distribution of reactant gases to the reaction zone in the catalyst layers by controlling the water in the pore channels apart from providing electrical and mechanical support to the membrane elec
## Abstract A gas diffusion layer (GDL) with carbon prepared from paraffin wax was developed for the first time to impart hydrophobicity and porosity for fuel cell application. It is also intended to reduce the nonβfunctional binder content in the microporous layer and to achieve optimum performanc