Inorganic composite structures enhanced by organic compounds

Details Inorganic composite structures enhanced by organic compounds Inorganic composite structures enhanced by organic compounds

C - Chemistry, Metallurgy

04

B

C04B 28/14 (2006.01) C04B 24/38 (2006.01) E04C 2/04 (2006.01)

Patent

CA 2514205

A composite structure is prepared from an aqueous slurry comprising a mixture of an inorganic material and a cellulose ether additive. The inorganic material hydrates in the presence of the additive to form a composite core substantially reinforced by the additive. Fibers, such as sized glass fibers, may be added to the slurry to synergistically improve the strength of the composite structure by combining with the additive. The concentration, viscosity grade and degree of substitution of the cellulose ether additive are selected to give the composite substantially improved nail pull resistance or flexural strength or both.

Cette invention concerne une structure composite préparée à partir d'une suspension aqueuse renfermant un mélange composé d'une matière inorganique et d'un additif d'éther de cellulose. La matière inorganique s'hydrate en présence de l'additif, ce qui permet d'obtenir une âme composite sensiblement renforcée par l'additif. Des fibres, telles que des fibres de verre calibrées, peuvent être ajoutées à la suspension afin que la résistance de la structure composite soit renforcée de façon synergétique par la combinaison avec l'additif. La concentration, le degré de viscosité et le degré de substitution de l'additif d'éther de cellulose sont sélectionnés afin que le composite bénéficie d'une résistance à l'arrachement des clous sensiblement accrue et/ou d'une résistance à la flexion sensiblement accrue.

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