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US 11,066,337 B2Granted
Inorganic foam based on calcium sulfoaluminate
AssigneesConstruction Research & Technology GmbH, De Cavis AG
InventorsSarunas Turcinskas, Bernhard Feichtenschlager, Gerhard Albrecht, Pauline Petit, Urs Gonzenbach, Philip Sturzenegger
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Abstract
The present invention relates to a process for preparing a particle-stabilized inorganic foam based on calcium sulfoaluminate, to a particle-stabilized inorganic foam based on calcium sulfoaluminate, to a cellular material obtainable by hardening and optionally drying the particle-stabilized inorganic foam based on calcium sulfoaluminate, and to a composition for preparing an inorganic foam formulation for providing a particle-stabilized inorganic foam based on calcium sulfoaluminate.
Claims22
A process for preparing an inorganic foam comprising the steps of
- (1) mixing
- (i) at least one group of inorganic particles;
- (ii) at least one amphiphilic compound;
- (iii) at least one inorganic binder mixture comprising
- (iiia) at least one calcium sulfoaluminate mixture, and optionally
- (iiib) at least one further inorganic binder selected from the group consisting of hydraulic binders, latent hydraulic binders, pozzolanic binders, and mixtures thereof;
- (iv) water;
- and optionally
- (v) at least one additive;
- and
- (2) foaming the resulting foam formulation by chemical, physical or mechanical foaming;
- wherein the at least one calcium sulfoaluminate mixture contains a) ye'elimite (4CaO×3Al2O3×SO3) and optionally belite (2CaO×SiO2) and b) anhydrite (CaSO4), calcium sulfate hemihydrate (CaSO4×0.5H2O) and/or gypsum (CaSO4×2H2O), in a weight ratio of a):b) of from 90:10 to 60:40.
9 more elements
An inorganic foam comprising
- (i) at least one group of inorganic particles;
- (ii) at least one amphiphilic compound;
- (iii) at least one inorganic binder mixture comprising
- (iiia) at least one calcium sulfoaluminate mixture, and optionally
- (iiib) at least one further inorganic binder selected from the group consisting of hydraulic binders, latent hydraulic binders, pozzolanic binders, and mixtures thereof;
- (iv) water;
- and optionally
- (v) at least one additive;
- wherein the at least one calcium sulfoaluminate mixture contains a) ye'elimite (4CaO×3Al2O3×SO3) and optionally belite (2CaO×SiO2) and b) anhydrite (CaSO4), calcium sulfate hemihydrate (CaSO4×0.5H2O) and/or gypsum (CaSO4×2H2O), in a weight ratio of a):b) of from 90:10 to 60:40.
6 more elements
A composition for preparing an inorganic foam formulation comprising as components
- (i) at least one group of inorganic particles;
- (ii) at least one amphiphilic compound;
- (iii) at least one inorganic binder mixture comprising
- (iiia) at least one calcium sulfoaluminate mixture, and optionally
- (iiib) at least one further inorganic binder selected from the group consisting of hydraulic binders, latent hydraulic binders, pozzolanic binders, and mixtures thereof;
- wherein
- the components (i), (ii), and (iii) are present separately;
- or the components (i) and (ii) are present as a mixture and the component (iii) is present separately;
- or
- the components (i), (ii) and (iii) are present as a mixture;
- wherein the at least one calcium sulfoaluminate mixture contains a) ye'elimite (4CaO×3Al2O3×SO3) and optionally belite (2CaO×SiO2) and b) anhydrite (CaSO4), calcium sulfate hemihydrate (CaSO4×0.5H2O) and/or gypsum (CaSO4×2H2O), in a weight ratio of a):b) of from 90:10 to 60:40.
8 more elements
A process for preparing an inorganic foam comprising the steps of
- (1) mixing
- (i) at least one group of inorganic particles;
- (ii) at least one amphiphilic compound;
- (iii) at least one inorganic binder mixture comprising
- (iiia) at least one calcium sulfoaluminate mixture, and optionally
- (iiib) at least one further inorganic binder selected from the group consisting of hydraulic binders, latent hydraulic binders, pozzolanic binders, and mixtures thereof;
- (iv) water;
- and optionally
- (v) at least one additive;
- and
- (2) foaming the resulting foam formulation by chemical, physical or mechanical foaming;
- wherein the at least one further inorganic binder is a mixture of metakaolin and fly ash.
9 more elements
A process for preparing an inorganic foam comprising the steps of
- (1) mixing
- (i) at least one group of inorganic particles;
- (ii) at least one amphiphilic compound;
- (iii) at least one inorganic binder mixture comprising
- (iiia) at least one calcium sulfoaluminate mixture, and optionally
- (iiib) at least one further inorganic binder selected from the group consisting of hydraulic binders, latent hydraulic binders, pozzolanic binders, and mixtures thereof;
- (iv) water;
- and optionally
- (v) at least one additive;
- and
- (2) foaming the resulting foam formulation by chemical, physical or mechanical foaming;
- wherein the at least one inorganic binder mixture (iii) comprises
- (iiic) at least one cement selected from CEM I, CEM II, CEM III, CEM IV, CEM V cements, according to DIN EN 197-1 (11/2011), or calcium aluminate cement.
10 more elements
A process for preparing an inorganic foam comprising the steps of
- (1) mixing
- (i) at least one group of inorganic particles;
- (ii) at least one amphiphilic compound;
- (iii) at least one inorganic binder mixture comprising
- (iiia) at least one calcium sulfoaluminate mixture, and optionally
- (iiib) at least one further inorganic binder selected from the group consisting of hydraulic binders, latent hydraulic binders, pozzolanic binders, and mixtures thereof;
- (iv) water;
- and optionally
- (v) at least one additive;
- and
- (2) foaming the resulting foam formulation by chemical, physical or mechanical foaming;
- wherein step (1) comprises the steps of
- (1a) dispersing the at least one group of inorganic particles, the at least one amphiphilic compound, and optionally the at least one additive in water to obtain an aqueous dispersion;
- and
- (1b) mixing the aqueous dispersion with the at least one inorganic binder mixture.
12 more elements
Dependencies are inferred from the claim text.