FR2598406A1 - Process for the preparation of a moulding material based on metal oxide, means for using this process and material obtained - Google Patents

Process for the preparation of a moulding material based on metal oxide, means for using this process and material obtained Download PDF

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FR2598406A1
FR2598406A1 FR8606872A FR8606872A FR2598406A1 FR 2598406 A1 FR2598406 A1 FR 2598406A1 FR 8606872 A FR8606872 A FR 8606872A FR 8606872 A FR8606872 A FR 8606872A FR 2598406 A1 FR2598406 A1 FR 2598406A1
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threshold
preparation
mixture
constituents
viscosity
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FR2598406B1 (en
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ADRIANSEN JEAN
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/003—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hybrid binders other than those of the polycarboxylate type
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C04B28/105—Magnesium oxide or magnesium carbonate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B9/00—Magnesium cements or similar cements

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Process for the preparation of a moulding material based on metal oxides. It is characterised in that: - a choice 5 is made of at least two plasticising agents 5a, 5b which include magnesium acetate 5a and a resin 5b, for example vinyl and/or acrylic; - a concentrated aqueous solution 6a of magnesium acetate is prepared 6; - the solution is stirred 7 slowly; - the solution 6a is brought 8 to a temperature close to a preestablished threshold St; - a base compound 10 containing magnesium oxide is mixed 9 with the above aqueous solution 6a while stirring slowly 7; - the temperature of the mixture being formed under the effect of the stirring 7 and then of the mixture 9a obtained is controlled 11 to maintain it at the preestablished threshold level St; - while the stirring of the mixture 9a is continued, any change in viscosity, and especially any gradual rise in this viscosity, is controlled 12; - the appearance of a preestablished viscosity threshold Sv is detected 13; - as soon as this threshold Sv appears, the mixture 9a being stirred, a vinyl or acrylic resin is intimately incorporated therein 14; - before the preparation obtained 14a sets solid, it is cast 15 into one and/or a number of suitable moulds.

Description

L'invention se rapporte a un procédé de préparation d'un matériau de moulage a base d'oxyde métallique, aux moyens pour la mise en oeuvre de ce procédé ainsi qu'au matériau obtenu. The invention relates to a process for the preparation of a molding material based on metal oxide, to the means for implementing this process and to the material obtained.

Notamment mais non exclusivement, l'invention intéresse les matériaux de moulage employés dans la confection de produits de construction. In particular but not exclusively, the invention relates to the molding materials used in the manufacture of construction products.

Dans ce domaine, on connais de nombreux materiaux de moulage constitués d'oxysulfates métalliques. In this field, many molding materials are known which consist of metal oxysulfates.

Pour realiser de tels matériaux, on mélange généralement en présence d'eau, deux composés secs dont un oxyde et un sulfate métallique. To make such materials, two dry compounds, including an oxide and a metal sulphate, are generally mixed in the presence of water.

La reaction chimique qui se produit au contact de l'eau est rapide et exothermique ; le corps formé est généralement très dur et insoluble dans l'eau. The chemical reaction which occurs on contact with water is rapid and exothermic; the formed body is generally very hard and insoluble in water.

Pour atténuer la spontanéité de la réaction et permettre aux constituants de s'agglomerer en une pâte malléable notamment afin d'ameliorer l'aptitude au moulage de tels matériaux, il est connu, par exemple, tel que cela est decrit (FR-A-2.512.437) d'ajouter a ces melanges un ou plusieurs corps organiques et/ou minéraux. To reduce the spontaneity of the reaction and allow the constituents to agglomerate into a malleable paste in particular in order to improve the moldability of such materials, it is known, for example, as described (FR-A- 2,512,437) to add to these mixtures one or more organic and / or mineral bodies.

Cette disposition donne de bons résultats mais elle se limite aux effets précités. This arrangement gives good results but it is limited to the aforementioned effects.

Ainsi, on reprôche aux matériaux élaborés à partir d'oxydes~ metalliques notamment d'oxydes de magnésium d'étire le siège de nombreuses micro-fissures et en outre de posséder une aptitude àl'usinage qui soit plus que médiocre. Thus, we blame the materials made from metal oxides ~ including magnesium oxides stretch the seat of many micro-cracks and in addition to have an aptitude for machining which is more than mediocre.

Un résultat que l'invention vise à obtenir est un procédé de préparation d'un matériau de moulage à partir d'oxydes métalliques qui permettent de conférer au matériau obtenu une structure homogène ainsi que des qualités optimales d'usinabilité. A result which the invention aims to obtain is a process for preparing a molding material from metal oxides which make it possible to give the material obtained a homogeneous structure as well as optimum qualities of machinability.

A cet effet, l'invention a pour objet un procédé du type précite notamment caractérisé en ce que
- on choisit au moins deux agents platisfiants parmi lesquels de l'acétate de magnésium et une résine par exemple vinylique et/ou acrylique,
- on prépare une solution aqueuse concentre en acétate de magnésium,
- on brasse lentement la solu-tion,
- on porte la solution à une température voisine d'un seuil préétabli,
- en brassant lentement, on mélange à la solution aqueuse précédente un composé de base contenant de l'oxyde de magnésium,
- on régule la température du mélange en formation sous l'effet du brassage puis du melange obtenu pour la maintenir au niveau du seuil préétabli,
- tout en perpétuant le brassage du mélange, on surveille toute variation de viscosité et notamment toute montée progressive de cette viscosité,
- on détecte l'apparition d'un seuil préétabli de viscosité,
- dès l'apparition de ce seuil, en brassant le mélange, on lui incorpore intimement une résine vinylique acrylique,
- avant la prise en masse de la preparation obenue, on coule celle-ci dans un et/ou des moules adéquats.To this end, the invention relates to a process of the aforementioned type, in particular characterized in that
at least two platisfiant agents are chosen, among which magnesium acetate and a resin, for example vinyl and / or acrylic,
- a concentrated aqueous solution of magnesium acetate is prepared,
- we slowly stir the solution,
- the solution is brought to a temperature close to a predetermined threshold,
- by stirring slowly, a basic compound containing magnesium oxide is mixed with the preceding aqueous solution,
the temperature of the mixture under formation is regulated under the effect of stirring and then of the mixture obtained in order to maintain it at the level of the preset threshold,
- while perpetuating the mixing of the mixture, any variation in viscosity is monitored, and in particular any gradual rise in this viscosity,
- the appearance of a pre-established viscosity threshold is detected,
- as soon as this threshold appears, by mixing the mixture, an acrylic vinyl resin is intimately incorporated into it,
- Before solidification of the preparation obtained, it is poured into one and / or suitable molds.

Les moyens pour la mise en oeuvre du procéde de l'invention sont quant à eux notamment caractérisés en ce qu'ils comprennent au moins un réceptacle equipé d'au moins :
- un moyen de dosage des constituants,
- un moyen de brassage de son contenu,
- un moyen de régulation de la température de son contenu,
- un moyen de détection du seuil de viscosité,
- un moyen de coulée dans un ou plusieurs moules.The means for implementing the process of the invention are in particular characterized in that they comprise at least one receptacle equipped with at least:
- a means of metering the constituents,
- a means of brewing its content,
- a means of regulating the temperature of its content,
a means of detecting the viscosity threshold,
- a means of pouring into one or more molds.

L'invention sera mieux comprise à l'aide de la description ci-apres faite à titre d'exemple non limitatif, en regard du dessin ci-annexé qui représente schématiquement un synoptique du procedé objet de l'invention. The invention will be better understood with the aid of the description below given by way of nonlimiting example, with reference to the attached drawing which schematically represents a block diagram of the process which is the subject of the invention.

En se reportant au dessin, on voit que pour élaborer un matériau de moulage 1 à partir d'oxydes métalliques, notamment d'oxydes de magnésium 2, on met 3 en solution aqueuse divers constituants 4 dont au moins certains réagissent entre eux puis, on melange 7 la préparation de manière à l'homogénéiser et enfin on coule 15 la preparation obtenue avant sa prise en masse. Referring to the drawing, it can be seen that in order to prepare a molding material 1 from metal oxides, in particular magnesium oxides 2, various constituents 4 are put into an aqueous solution 4 at least some of which react with each other and then, 7 mixes the preparation so as to homogenize it and finally the preparation 15 is poured in before it solidifies.

On note que, classiquement, lors de la préparation, on incorpore au melange au moins un agent plastifiant 5a, 5b. It is noted that, conventionally, during the preparation, at least one plasticizing agent 5a, 5b is incorporated into the mixture.

Conformement à l'invention
- on choisit 5 au moins deux agents platisfiants 5a, 5b parmi lesquels de l'acétate de magnésium 5a et une resine 5b par exemple vinylique et/ou acrylique,
- on prépare 6 une solution aqueuse 6a concentrée en acétate de magnésium,
- on brasse 7 lentement la solution,
- on porte 8 la solution 6a à une température voisine d'un seuil St préétabli,
- en brassant lentement 7, on mélange 9 à la solution aqueuse 6a précédente un composé de base 10 contenant de l'oxyde de magnésium 2,
- on régule 11 la température du mélange en formation sous l'effet du brassage 7 puis du mélange 9a obtenu pour maintenir cette température au niveau du seuil St préétabli,
- tout en perpétuant le brassage du mélange 9a, on surveille 12 toute variation de viscosité et notamment toute montée progressive de cette viscosité,
- on détecte 13 l'apparition d'un seuil préétabli Sv de viscosité,
- dès l'apparition de ce seuil Sv, en brassant le mélange 9a, on lui incorpore 14 intimement une résine 5b vinylique ou acrylique,
- avant la prise en masse de la préparation obtenue 14a, on coule 15 celle-ci dans un et/ou des moules adéquats.In accordance with the invention
at least two platisfiant agents 5a, 5b are chosen, among which magnesium acetate 5a and a resin 5b, for example vinyl and / or acrylic,
an aqueous solution 6a concentrated in magnesium acetate is prepared 6,
- the solution is stirred 7 slowly,
- the solution 6a is brought 8 to a temperature close to a preset threshold St,
by slowly stirring 7, 9 is mixed with the preceding aqueous solution 6a a base compound 10 containing magnesium oxide 2,
the temperature of the mixture being formed is regulated 11 under the effect of stirring 7 and then of the mixture 9a obtained in order to maintain this temperature at the level of the preset threshold St,
- while perpetuating the mixing of the mixture 9a, monitoring 12 any variation in viscosity and in particular any gradual rise in this viscosity,
- the appearance of a predetermined viscosity threshold Sv is detected 13,
- as soon as this threshold Sv appears, by mixing the mixture 9a, there is intimately incorporated therein a vinyl or acrylic resin 5b,
- Before solidification of the preparation obtained 14a, it is poured 15 into one and / or suitable molds.

Dans un mode preféré de réalisation de l'invention, la oréparation du matériau de moulage met en oeuvre du sulfate de magnésium. In a preferred embodiment of the invention, the separation of the molding material uses magnesium sulfate.

Tel que cela est connu, ce constituant va se combiner avec l'oxyde de magnésium pour former un oxysulfate de magnésium très dur. As is known, this constituent will combine with magnesium oxide to form a very hard magnesium oxysulfate.

Selon une caracteristique de l'invention, l'acétate de magnésium n'est pas uniquement un plastifiant mais, à l'instar du sulfate de magnésium, il donne un compose solide l'oxyacetate de magnésium dont la dureté est moins importante que celle de 1 'oxysulfate de magnésium mais qui présente l'avantage d'être un matériau plastique. According to a characteristic of the invention, magnesium acetate is not only a plasticizer but, like magnesium sulfate, it gives a solid compound magnesium oxyacetate whose hardness is less important than that of 1 magnesium oxysulfate but which has the advantage of being a plastic material.

La combinaison solide des deux composés oxysulfate de magnésium et oxyacétate de magnésium (majoritaire) donne les propriétés mécaniques voulues.  The solid combination of the two compounds magnesium oxysulfate and magnesium oxyacetate (majority) gives the desired mechanical properties.

A noter que cet oxyacétate de magnesium n'a jamais été utilisé pour un tel matériau. Note that this magnesium oxyacetate has never been used for such a material.

L'ajout d'agents plastifiants est primordial pour obtenir un matériau susceptible d'etre facilement usiné. The addition of plasticizers is essential to obtain a material capable of being easily machined.

Conformément à l'invention, lorsque le matériau de moulage 1 contient du sulfate de magnésium, on incorpore 16 celui-ci 16a lors de l'étape de préparation 6 de la solution aqueuse 6a d'acétate de magnésium. According to the invention, when the molding material 1 contains magnesium sulphate, 16 16a is incorporated during the preparation step 6 of the aqueous solution 6a of magnesium acetate.

Dans une forme avantageuse de mise en oeuvre, on incorpore 17 à un moment quelconque de la préparation du matériau 1 au moins un agent de gonflement 17a
Dans un mode préféré de mise en oeuvre, l'agent de gonflement 17a consiste en de la poudre de polystyrène.In an advantageous embodiment, at least one blowing agent 17a is incorporated at any time during the preparation of the material 1.
In a preferred embodiment, the blowing agent 17a consists of polystyrene powder.

Dans une autre forme de mise en oeuvre, l'agent de gonflement 17a est de la sciure de bois. In another embodiment, the blowing agent 17a is sawdust.

Ces matériaux renforcent en outre le caractère isolant thermique du matériau de moulage. These materials also reinforce the thermal insulating nature of the molding material.

Dans une forme avantageuse de mise en oeuvre, dans l'une des etapes d'ajout de constituants qui précède l'étape de coule 15 du matériau, on ajoute 18 de la silice 18a dans la préparation. In an advantageous form of implementation, in one of the stages of adding constituents which precedes the stage of pouring 15 of the material, 18 of silica 18a is added to the preparation.

Lorsque le matériau doit avoir une couleur particulière, on procède tel que précédemment pour incorporer 19 un ou plusieurs agents colorants 19a. When the material must have a particular color, the procedure is as above to incorporate 19 one or more coloring agents 19a.

Les moyens pour la mise en oeuvre du procéde selon l'invention comprennent au moins un réceptacle 20 equipé d'au moins:
- un moyen de dosage 21 des constituants 4,
- un moyen de brassage 22 de son contenu,
- un moyen de régulation 23 de la température de son contenu,
- un moyen de détection 24 du seuil de viscosité Sv,
- un moyen de coulée 25 dans un ou plusieurs moules 25a
Le matériau obtenu selon le procedé est caracterise en ce qu'il est élaboré à partir d'au moins trois constituants 4 melangés en solution aqueuse, lesquels constituants se composent principalement
- l'un 10 de base, d'oxyde de magnesium 2,
- le suivant d'acetate de magnésium 5a,
- le dernier de résine organique 5b.The means for implementing the method according to the invention comprise at least one receptacle 20 equipped with at least:
a metering means 21 for the constituents 4,
a means 22 for mixing its content,
a means 23 for regulating the temperature of its content,
a means 24 for detecting the viscosity threshold Sv,
- A casting means 25 in one or more molds 25a
The material obtained according to the process is characterized in that it is produced from at least three constituents 4 mixed in aqueous solution, which constituents are mainly composed
- one 10 of base, of magnesium oxide 2,
- the following of magnesium acetate 5a,
- the last of organic resin 5b.

De préférence, ce matériau comprend en masse les proportions suivantes de cpnstituants 4
- eau combinee 30 %
- oxyde de magnésium 30 % plus ou moins 5 X
- acétate de magnésium 20 % plus ou moins 5 %
- silice 10 %
- sulfate de magnesium 8 % plus ou moins 2 %
- résine 2 %
Bien entendu, ces proportions sont proposées à titre indicatif et peuvent varier selon les caracteristiques souhaitées pour le matériau.Preferably, this material comprises by mass the following proportions of components 4
- combined water 30%
- magnesium oxide 30% more or less 5 X
- magnesium acetate 20% plus or minus 5%
- silica 10%
- magnesium sulfate 8% plus or minus 2%
- 2% resin
Of course, these proportions are offered for information only and may vary depending on the characteristics desired for the material.

Ces proportions varient notamment lorsqu'on incorpore à la préparation du matériau un agent de gonflement 17a. These proportions vary in particular when a blowing agent 17a is incorporated into the preparation of the material.

De préférence, le seuil de temperature St est située à environ 200. Cette valeur convient pour les proportions précitées. Preferably, the temperature threshold St is situated at approximately 200. This value is suitable for the abovementioned proportions.

Dans tous les cas, le seuil de temperature St résulte d'essais et il est détermine pour que l'activité des constituants entre eux soit retardée afin de permettre une préparation homogene du matériau. In all cases, the temperature threshold St results from tests and it is determined so that the activity of the constituents between them is delayed in order to allow a homogeneous preparation of the material.

Quant au seuil Sv, il résulte également d'essais notamment d'essais de coulabilité de la préparation. As for the threshold Sv, it also results from tests in particular from tests of flowability of the preparation.

A titre indicatif-, on fixe le seuil Sv à environ 600 cent i poi ses.  As an indication, the threshold Sv is fixed at around 600 hundred i pois ses.

Claims (10)

REVENDICATIONS - avant la prise en masse de la préparation obenue (14a), on coule (15) celle-ci dans un et/ou des moules adequats. - Before solidification of the preparation obtained (14a), the latter (15) is poured into one and / or suitable molds. - dès l'apparition de ce seuil (Sv), en brassant le mélange (9a), on lui incorpore (14) intimement une résine vinylique ou acrylique, - as soon as this threshold appears (Sv), by mixing the mixture (9a), it is incorporated (14) intimately with a vinyl or acrylic resin, - on détecte (13) l'apparition d'un seuil préétabli (Sv) de viscosité, - the appearance (13) of a predetermined viscosity threshold (Sv) is detected, - tout en perpétuant le brassage du mélange (9a), on surveille (12) toute variation de viscosite et notamment toute montee progressive de cette viscosite,  - while perpetuating the mixing of the mixture (9a), we monitor (12) any variation in viscosity and in particular any gradual rise in this viscosity, - on regule (11) la température du mélange en formation sous l'effet du brassage (7) puis du melange (9a) obtenu pour la maintenir au niveau du seuil (St) préétabli, the temperature of the mixture being formed is regulated (11) under the effect of stirring (7) and then of the mixture (9a) obtained in order to keep it at the level of the preset threshold (St), - en brassant lentement (7), on mélange (9) à la solution aqueuse (6a) précédente un composé de base (10) contenant de l'oxyde de magnesium,  - by stirring slowly (7), a basic compound (10) containing magnesium oxide is mixed (9) with the above aqueous solution (6a), - on porte (8) la solution (6a) à une température voisine d'un seuil (St) préétabli, - the solution (6a) is brought (8) to a temperature close to a predetermined threshold (St), - on brasse (7) lentement la solution, - the solution is stirred (7) slowly, - on prépare (6) une solution aqueuse (6a) concentrée en acetate de magnésium, - an aqueous solution (6a) concentrated in magnesium acetate is prepared (6), - on choisit (5) au moins deux agents platisfiants t3a, 5b) parmi lesquels de l'acétate de magnésium (5a) et une resine (5b) par exemple vinylique et/ou acrylique, - at least two platifying agents t3a, 5b) are chosen (5) among which magnesium acetate (5a) and a resin (5b), for example vinyl and / or acrylic, 1. Procédé de fabrication d'un matériau de moulage ''i a base d'oxydes métalliques notamment d'oxydes ie magneii J. selon lequel procédé on met en solution aqueuse divers c.estitJdnts (4) dont au moins certains sont susceptibles de ragir entre eux puis on mélange et enfin on coule la préparation cstenue, e procedé étant CARACTERISE en ce que 1. A method of manufacturing a molding material '' based on metal oxides, in particular oxides ie magneii J. according to which method is put in aqueous solution various c.estitJdnts (4) at least some of which are liable to react between them then mixing and finally pouring the cstenue preparation, e process being CHARACTERIZED in that 2. Procédé selon la revendication 1 caractérisé en ce qu'on incorpore (17) à un moment quelconque de la préparation du matériau (1) au moins un agent de gonflement (17a). 2. Method according to claim 1 characterized in that incorporates (17) at any time of the preparation of the material (1) at least one swelling agent (17a). 3. Procéde selon la revendication 1 caracterise en ce que lorsque le matériau de moulage (1) contient du sulfate de magnesium, on incorpore (16) à celui-ci (16a) lors de l'étape de préparation (6) de la solution aqueuse (6a) d'acétate de magnésium.  3. Method according to claim 1 characterized in that when the molding material (1) contains magnesium sulfate, it is incorporated (16) therein (16a) during the step of preparation (6) of the solution aqueous (6a) magnesium acetate. 4. Procédé selon la revendication 1 caractérise en ce que dans l'une des étapes d'ajout de constituants qui precede l'étape de coulée (15) du matériau, on ajoute (18) de la silice dans la préparation. 4. Method according to claim 1 characterized in that in one of the stages of adding constituents which precedes the stage of casting (15) of the material, silica is added (18) in the preparation. 5. Procédé selon la revendication 1 caractérisé en ce que lorsque le matériau doit avoir une couleur particuliere, dans l'une des etapes d'ajout de constituants qui précède l'étape de coule (15) du matériau, on ajoute un ou plusieurs agents colorants (19a). 5. Method according to claim 1 characterized in that when the material must have a particular color, in one of the stages of adding constituents which precedes the stage of casting (15) of the material, one or more agents are added dyes (19a). 6. Procédé selon la revendication 1 caractérise en ce que le seuil de température (St) est determine de manière que l'activité des constituants entre eux soit suffisamment retardée pour permettre une préparation homogène du matériau. 6. Method according to claim 1 characterized in that the temperature threshold (St) is determined so that the activity of the constituents between them is sufficiently delayed to allow a homogeneous preparation of the material. 7. Moyens pour la mise en oeuvre du procedé selon l'une quelconque des revendications 1 à 6 caracterises en ce qu'ils comprennent au moins un réceptacle (20) équipé d'au moins 7. Means for implementing the method according to any one of claims 1 to 6, characterized in that they comprise at least one receptacle (20) equipped with at least - un moyen de dosage (21) des constituants (4), - a metering means (21) of the constituents (4), - un moyen de brassage (22) de son contenu, - a means of mixing (22) its content, - un moyen de régulation (23) de la temperature de son contenu, a means of regulating (23) the temperature of its content, - un moyen de detection (24) du seuil de viscosite (Sv),  a means of detection (24) of the viscosity threshold (Sv), - un moyen de coulée (25) dans un ou plusieurs moules (25a). - A means of casting (25) in one or more molds (25a). 8. Moyens selon la revendication 7 caractérisés en ce qu'on fixe le seuil (St) à environ 600 centipoises. 8. Means according to claim 7 characterized in that the threshold is fixed (St) at about 600 centipoise. 9. Matériau obtenu par la mise en oeuvre du procedé selon les revendications 1 à 6 caractérisé en ce qu'il est elaboré à partir d'au moins trois constituants (4) mélangés en solution aqueuse, lesquels constituants se composent principalement : 9. Material obtained by implementing the process according to claims 1 to 6, characterized in that it is produced from at least three constituents (4) mixed in aqueous solution, which constituents are mainly composed: - l'un (10) de base, d'oxyde de magnésium (2), - one (10) of base, of magnesium oxide (2), - le suivant d'acétate de magnésium (5a),  - the next of magnesium acetate (5a), - le dernier de résine organique (5b). - the last of organic resin (5b). 10. Matériau selon la revendication 9 caracterise en ce qu'il comprend en masse les proportions approximatives suivantes de constituants 10. Material according to claim 9 characterized in that it comprises by mass the following approximate proportions of constituents - eau combinée 30 % - combined water 30% - oxyde de magnésium 30 % plus ou moins 5 %  - magnesium oxide 30% plus or minus 5% - acétate de magnésium 20 % plus ou moins 5 %  - magnesium acetate 20% plus or minus 5% - silice 10 % - sulfate de magnésium 8 X plus ou moins 2 % - résine 2 X  - silica 10% - magnesium sulphate 8 X more or less 2% - resin 2 X
FR8606872A 1986-05-09 1986-05-09 PROCESS FOR THE PREPARATION OF A MOLDING MATERIAL BASED ON METAL OXIDE, MEANS FOR CARRYING OUT SAID MATERIAL Expired FR2598406B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE80262C (en) *
DE178013C (en) *
DE596673C (en) * 1932-02-06 1934-05-11 Emil Glaser Process for the production of a mass which sets and hardens by the action of water or steam
WO1984000921A1 (en) * 1982-08-27 1984-03-15 Donald W Thomson Foam insulation and a process for producing the same and insulating the cavities of structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE80262C (en) *
DE178013C (en) *
DE596673C (en) * 1932-02-06 1934-05-11 Emil Glaser Process for the production of a mass which sets and hardens by the action of water or steam
WO1984000921A1 (en) * 1982-08-27 1984-03-15 Donald W Thomson Foam insulation and a process for producing the same and insulating the cavities of structures

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