C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 41/50 (2006.01) C04B 41/68 (2006.01) C09D 5/24 (2006.01) C23F 13/12 (2006.01)
Patent
CA 2322395
An electrically conducting microcapillary composite matrix, produced by applying a painting or coating material on mortar or concrete, which painting or coating material comprises at least one of the following compounds: alumino-silicate of the summation formula aM2 O*bAl2O3 *cSiO2, with a ratio of c/b ranging from 1 to 40, preferably ranging from 5 to 20, and a ratio of a/b ranging from 1 to 25, preferably ranging from 5 to 15, with M = Li, Na, K; alumino-hydroxo--complex of the summation formula M x Al(OH)y, with x ranging from 1 to 3 and y ranging from 4 to 6, with M = Na, K; aluminum phosphates, preferably condensed aluminium phosphates in combination with water-soluble alkali silicates. The electrical conductivity of the painting or coating material is achieved by admixing electrically conducting pigments and/or fiber materials. The painting or coating material optionally comprises alkali silicates, reactive alumino-silicates, preferably metakaolin, microsilica, Kieselsol, water--dispersible organic polymers and dispersing agents, thickening agents, water retention agents, film formers, fillers, additives, fiber materials. The specific electric resistance of the microcapillary composite matrix, measured on its surface, is less than 25 ohm.cm, preferably less than 5 ohm.cm.
L'invention concerne une matrice composite microcapillaire éelctroconductrice, obtenue par application d'un agent de badigeonnage ou de revêtement sur du mortier ou du béton, contenant au moins un des composés suivants: aluminosilicate de la formule brute aM2O*bAl2O3*cSiO2, avec un rapport c/b de l'ordre de 1 à 40, de préférence de l'ordre de 5 à 20 et un rapport de a/b de 1 à 25, de préférence de l'ordre de 5 à 15, avec M = Li, Na, K; complexe alumino-hydroxo de la formule brute MxAl(OH)y, x étant compris entre 1 et 3 et y, entre 4 et 6, avec M = Na, K; phosphate d'aluminium, de préférence phosphate d'aluminium condensé, en relation avec des silicates alcalins solubles dans l'eau. La conductivité électrique de l'agent de badigeonnage ou de revêtement s'obtient par mélange de pigments et/ou de substances fibreuses électroconducteurs. La résistance électrique spécifique de la matrice composite microcapillaire, mesurée à la surface, est inférieure à 25 Ohm.cm, de préférence inférieure à 5 Ohm.cm.
Blake Cassels & Graydon Llp
Schwarz Wolfgang
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