Clay film

Details Clay film Clay film

C - Chemistry, Metallurgy

01

B

C01B 33/40 (2006.01)

Patent

CA 2538173

The present invention provides a clay film with excellent flexibility, whose main component is natural clay or synthetic clay, and in which there is uniform orientation in the clay particle layer, and relates to a novel clay film that has enough mechanical strength to be used as a self-supporting film, and has a structure in which layers of clay particles are highly oriented, and in which the main constituent component of the clay film is mica, vermiculite, montmorillonite, iron montmorillonite, beidellite, saponite, hectorite, stevensite, or nontronite, and which has excellent flexibility, undergoes no structural change at high temperatures of 250°C and up to 600°C, contains no pinholes, and has a gas permeation coefficient of less than 3.2 x 10 -11 cm2s-1cmHg-1 at room temperature for helium, hydrogen, oxygen, nitrogen, or air.

Cette invention concerne un film d'argile comprenant comme élément principal de l'argile naturel ou de l'argile synthétique, présente une orientation uniforme des particules laminées, est remarquable par sa souplesse, a une robustesse mécanique suffisante pour s'auto-suffire et possède une structure dans laquelle les particules d'agiles sont fortement orientées. Le composant principal de ce film d'argile est constitué par du mica, de la vermiculite, de la montmorillonite, de la montmorillonite de fer, de a beidellite, de la saponite, de l'hectorite, de la stenvensite ou de la nontronite, ne subit aucun changement strucuturel même à de hautes températures comprises entre 250 et 600 ·C, est exempt de trous en tête d'épingle et possède un coefficient de perméabilité aux gaz inférieur à 3,2 x 10?-11¿ cm?2¿s?-1¿cmHg?-1¿pour l'hélium, l'oxygène et l'air à la température ambiante.

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