摘要:
L'incention concerne un procédé de contrôle du fonctionnement d'une pile à combustible comportant au moins une membrane (2), comportant les étapes suivantes : • mise en contact d'au moins deux moyens conducteurs (P1,P2), avec deux éléments de surface différents d'une même première plaque conductrice, ladite plaque pouvant être une plaque de distribution (50) appartenant à une première cellule (10), • mesure d'une ou plusieurs tensions électriques, entre lesdits moyens conducteurs, reliés électriquement à un dispositif de mesure de tension électrique (200).
摘要:
The invention relates to copolymers including a chain of repeating siloxane units of at least two different types, a first type of repeating siloxane unit including at least one -OH group on the silicon atom of the repeating siloxane unit and a second type of repeating unit including at least one pendant chain on the silicon atom of said repeating unit, said pendant chain consisting of a polymer chain including a concatenation of repeating units supporting at least one group of formula -PO 3 R 1 R 2 , where R 1 and R 2 are, separately, a hydrogen atom, an alkyl group or a cation. The invention is useful in grafting inorganic particles.
摘要:
The invention relates to a method for preparing a composite material comprising a polymer matrix and a filler consisting of inorganic ion-exchange particles, including a step comprising the in situ synthesis of said particles inside the polymer matrix.
摘要:
The invention relates to a method for manufacturing a composite bipolar plate from a composition comprising at least one flake graphite and at least one thermoplastic polymer. Said method comprises the following consecutive steps: (a) dry sieving of the composition by means of a sieve for which the mesh diameters are less than or equal to 1000 μm, (b) dry blending of the sieved composition, (c) deposition of the blended composition in a mould, said mould preferably being preheated, (d) moulding by thermocompression of the blended composition with induction heating of the mould, and (e) removal from the mould of the thermocompressed composition leading to the obtaining of the composite bipolar plate. The invention also relates to a composite bipolar plate manufactured by said method, the use of this composite bipolar plate and a fuel cell comprising such a composite bipolar plate.