Reinforcement of ceramic bodies with wollastonite

Details Reinforcement of ceramic bodies with wollastonite Reinforcement of ceramic bodies with wollastonite

C - Chemistry, Metallurgy

04

B

261/35

C04B 33/36 (2006.01)

Patent

CA 2287891

The use of wollastonite fibers having relatively long average fiber lengths as reinforcement agents for unfired sanitaryware bodies. The addition of refined wollastonite to sanitaryware bodies exhibited improved resistance to propagation of cracks, reduced drying and firing shrinkage, fluxing activity, an HF release inhibition upon firing. Reduced shrinkage and increased permeability improves the resistance to cracking during rapid drying and allows faster time schedules to be employed.

Cette invention concerne l'utilisation de fibres de wollastonite qui possèdent une longueur moyenne relativement importante, et qui peuvent être utilisées comme agents de renforts pour des articles d'équipement sanitaires qui ne sont cuits. L'addition de wollastonite raffinée à ces objets permet d'obtenir une plus grande résistance à la propagation des fissures, de réduire leur rétrécissement lors du séchage et de la cuisson, de leur conférer une activité de fluage, et d'inhiber les émissions de HF lors de la cuisson. La diminution du rétrécissement et une meilleure perméabilité donnent une meilleure résistance à la fissuration lors du séchage rapide, et offrent des délais de production plus courts.

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