FR2600999A1 - Heat-insulating material for severe environment - Google Patents

Heat-insulating material for severe environment Download PDF

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Publication number
FR2600999A1
FR2600999A1 FR8605147A FR8605147A FR2600999A1 FR 2600999 A1 FR2600999 A1 FR 2600999A1 FR 8605147 A FR8605147 A FR 8605147A FR 8605147 A FR8605147 A FR 8605147A FR 2600999 A1 FR2600999 A1 FR 2600999A1
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France
Prior art keywords
load
insulating
thermal insulator
binder
insulator according
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Granted
Application number
FR8605147A
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French (fr)
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FR2600999B1 (en
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EISENSCHMIDT MICHEL
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EISENSCHMIDT MICHEL
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Priority to FR8605147A priority Critical patent/FR2600999B1/en
Publication of FR2600999A1 publication Critical patent/FR2600999A1/en
Application granted granted Critical
Publication of FR2600999B1 publication Critical patent/FR2600999B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/10—Clay
    • 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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/14—Explosion or fire protection arrangements on packages or ammunition
    • F42B39/18—Heat shields; Thermal insulation
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00974—Uses not provided for elsewhere in C04B2111/00 for pyrotechnic applications, e.g. blasting

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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)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Civil Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The insulating material comprises an insulating filler and a binder, the insulating filler being in the form of a homogeneous unstratified mixture of various particles of which at least 20 % consist of clay of montmorillonite, illite or halloysite type. A passive insulating material can be added to the insulating filler and the binder employed is inorganic or organic in nature. The invention is particularly intended for the thermal protection of pyrotechnic equipment subjected to a severe environment.

Description

I1 existe actuellement une demande aigue,mais insatisfaite par le marc hé actuel,de protection thermique pour des matériels pyrothecniques soumis à un environnement sévère. Cette protection doit pouvoir supporter des températures élevées, supérieures à 8000C en face chaude pendant des durées supérieures à vingt minutes,tout en maintenant des températures en face froide inférieures à 1500C pendant toute la durée d'exposition . Pour combler ce vide,nous avons mis au point un isolant présentant les carastéristiques suivantes . There is currently an acute demand, but not satisfied by the current market, for thermal protection for pyrothecnic materials subjected to a severe environment. This protection must be able to withstand high temperatures, above 8000C on the hot face for periods longer than twenty minutes, while maintaining temperatures on the cold face below 1500C for the entire duration of exposure. To fill this void, we have developed an insulator with the following characteristics.

L scliptí, : IxoLre isolant est à base d'une charge minérale lée par des résines organique élastomères,ou par un liant minéral courant à prise hydraulique. Ce produit est stable dans le temps et n'est pas sujet à des émanations nocives ou corrosives pendant la période de stockage ou lors d'une agression thermique.Notre produit est destiné à être utilisé soit en bourrage entre deux parois rigides,soit en masse polymérisée. L scliptí,: IxoLre insulator is based on a mineral filler bound by organic elastomeric resins, or by a common mineral binder with hydraulic setting. This product is stable over time and is not subject to harmful or corrosive fumes during the storage period or during a thermal attack. Our product is intended to be used either as tamping between two rigid walls, or in mass polymerized.

Notre produit est un composite,faisant intervenir simultanément et /ou successivement des phénomènes actifs comme la vaporisation,ou passifs comme la résistivité thermique .Les parties actives sont constituées d'argiles chez lesquelles une agression thermique déclanche des réactions de déshydratation trés endothermiques.Les parties passives sont des oxydes d'alumine et des catalyseurs carbonés,ainsi que certaines formes de silice
Notre produit répond aux demandes du marché par ses performances Thermiques et se situe dans la zone de 20 minutes à 1 heure 30 minutes selon son épaisseur avec maxi de 35mm
Dans l'isolant selon l'invention, la charge isolante se présente sous la forme d'un mélange homogène non stratifié de diverses particules, dont au moins 20 % sont constituées d'argile de type Montmorillonite (Bentonite, Beidellite ou Nontronite) ou Illite ou
Halloysite.L'eau liée naturellement dans ces matériaux, ne l'est que de manière très lache ; elle pénètre leurs réseaux en quantité correspondant à la tension de vapeur d'eau dans le milieu ambiant, et peut etre enlevée du réseau sans destruction de celui-ci. Le phénomène est réversible la réhydratation pouvant être naturelle ou artificielle.Our product is a composite, involving simultaneously and / or successively active phenomena such as vaporization, or passive phenomena such as thermal resistivity. The active parts consist of clays in which thermal aggression triggers very endothermic dehydration reactions. passive are alumina oxides and carbon catalysts, as well as some forms of silica
Our product responds to market demands by its thermal performance and is in the region of 20 minutes to 1 hour 30 minutes depending on its thickness with a maximum of 35mm.
In the insulator according to the invention, the insulating filler is in the form of a homogeneous non-layered mixture of various particles, at least 20% of which consist of clay of the Montmorillonite (Bentonite, Beidellite or Nontronite) or Illite type. or
Halloysite. The water naturally bound in these materials is only very loose; it penetrates their networks in an amount corresponding to the vapor pressure of water in the ambient medium, and can be removed from the network without destroying it. The phenomenon is reversible, rehydration can be natural or artificial.

On peut adjoindre à la charge un isolant passif detype argile expansée pour au moins 15 % de la dite charge,
On peut aussi adjoinre à la charge un isolant passif de type silice micronisée pour au moins 5 % de la dite charge.It is possible to add to the load a passive insulator of the expanded clay type for at least 15% of said load,
It is also possible to add to the load a passive insulator of the micronized silica type for at least 5% of said load.

On peut encore adjoinre à la charge un isolant passif de type Oxyde d'alumine pour au moins 5 % de la dite charge. It is also possible to add to the load a passive insulator of the aluminum oxide type for at least 5% of said load.

Le liant peut indifféremment être de nature minérale à prise hydraulique (avec adjonction d'un agent gonflant pour annuler les retraits), incorporé pour au moins 10 46 de la charge ou de nature organique et polymérisable. étant incorporé à teneur d'au moins 10 % de la dite charge. The binder can be either mineral in nature with hydraulic setting (with the addition of a blowing agent to cancel shrinkage), incorporated for at least 10 46 of the filler or of organic and polymerizable nature. being incorporated with a content of at least 10% of the said charge.

La liaison de la charge peut être réalisée par un liant minéral obtenu par la réaction de surface entre un talc et un silicate de sodium en solution dans l'eau ; ce liant étant utilisé à au moins 10 46 de la dite charge. The bonding of the filler can be carried out by an inorganic binder obtained by the surface reaction between a talc and a sodium silicate in solution in water; this binder being used at least 10 46 of said load.

On peut incorporer à au moins 5 96 de la dite charge des particules carbonnées, dans le but de faire agir sur elle l'eau libérée par l'isolant actif ; la réaction obtenue, très endothermique, est la fabrication du gaz à l'eau, bien connue des chimistes et des physiciens0 I1 est précisé que les particules carbonnées doivent être incorporées dans la masse isolante et réparties dans celle-ci en évitant toute concentration en strates. Carbon particles can be incorporated into at least 5% of the said charge, with the aim of causing the water released by the active insulator to act on it; the reaction obtained, very endothermic, is the manufacture of gas with water, well known to chemists and physicists0 I1 it is specified that the carbonaceous particles must be incorporated into the insulating mass and distributed in it avoiding any concentration of strata .

Les valeurs et paramètres des phénomènes de vaporisation sont donnés par le diagramme de Mollier The values and parameters of the vaporization phenomena are given by the Mollier diagram

Claims (2)

R E V E N D I C A T I O N S 1o Isolant thermique, en particulier pour des matériels pyrotechniques, comprenant une charge isolante et un liant, caractérisé en ce que la charge isolante se présente sous la forme d'un mélange homogène non stratifié de diverses particules dont au moins 20 % sont constitués d'argile de type Montmorillonite (Bentonite, Beidellite ou Nontronite), ou Illite ou HalloysiteO 2.Isolant thermique selon la revendication i, caractérisé par-l'adjonction à la charge isolante d'un isolant passif de type argile expansée pour au moins 15 % de ladite charge,CLAIMS 1o Thermal insulator, in particular for pyrotechnic materials, comprising an insulating filler and a binder, characterized in that the insulating filler is in the form of a homogeneous non-layered mixture of various particles of which at least 20% consist of clay of Montmorillonite type (Bentonite, Beidellite or Nontronite), or Illite or HalloysiteO 2. Thermal insulator according to claim i, characterized by the addition to the insulating charge of a passive insulator of the expanded clay type for at least 15% of said charge, 3. - Isolant thermique selon la revendication 1 ou la revendication 2, caractérisé par l'adJonction à la charge isolante d'un isolant passif de type silice micronisée pour au moins 5 % de ladite charge. 3. - Thermal insulator according to claim 1 or claim 2, characterized by the addition to the insulating load of a passive insulator of the micronized silica type for at least 5% of said load. 4o Isolant thermique selon l'une quelconque des revendications 1 à 3, caractérisé par l'adJonction à la charge isolante d'un isolant passif de type oxyde d'alumine pour au moins 5 % de ladite charge. 4o thermal insulator according to any one of claims 1 to 3, characterized by the addition to the insulating load of a passive insulator of the alumina oxide type for at least 5% of said load. So Isolant thermique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le liant utilisé est de nature minérale à prise hydraulique, avec adjonction d'un agent gonflant pour annuler les retraits, et ést incorporé à hauteur d'au moins 10 ffi de la charge. So thermal insulator according to any one of claims 1 to 4, characterized in that the binder used is of mineral nature with hydraulic setting, with the addition of a swelling agent to cancel shrinkage, and is incorporated at a height of at least 10 ffi of the load. 6o Isolant thermique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le liant utilisé est de nature organique et polymérisable et est incorporé à hauteur d'au moins 10 % de la charge, 6o thermal insulator according to any one of claims 1 to 4, characterized in that the binder used is organic and polymerizable in nature and is incorporated at least 10% of the filler, 7. Isolant thermique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la liaison de la charge est réalisée par un liant minéral obtenu par la réaction de surface entre un talc et un silicate de sodium en solution dans l'eau, ce liant étant utilisé à au moins 70 de ladite charge 7. Thermal insulator according to any one of claims 1 to 4, characterized in that the bonding of the filler is carried out by an inorganic binder obtained by the surface reaction between a talc and a sodium silicate in solution in water , this binder being used at least 70 of said load 8. Isolant thermique selon la revendication 7, caractérisé en ce qu'on incorpore, à hauteur d'au moins 5 % de ladite charge, des particules carbonnées dans le but de faire agir sur elles l'eau libérée par l'isolant actif, les dites particules carbonnées devant Entre incorporées dans l & masse isolante et réparties dans celle-ci en évitant toute concentration en strates,  8. Thermal insulator according to claim 7, characterized in that carbonaceous particles are incorporated, at least 5% of said charge, with the aim of causing the water released by the active insulator to act on them, the said carbon particles in front of Entre incorporated into the insulating mass and distributed therein, avoiding any concentration of strata,
FR8605147A 1986-04-10 1986-04-10 THERMAL INSULATION FOR A SEVERE ENVIRONMENT Expired - Fee Related FR2600999B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8605147A FR2600999B1 (en) 1986-04-10 1986-04-10 THERMAL INSULATION FOR A SEVERE ENVIRONMENT

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Application Number Priority Date Filing Date Title
FR8605147A FR2600999B1 (en) 1986-04-10 1986-04-10 THERMAL INSULATION FOR A SEVERE ENVIRONMENT

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Publication Number Publication Date
FR2600999A1 true FR2600999A1 (en) 1988-01-08
FR2600999B1 FR2600999B1 (en) 1990-12-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2814740A1 (en) 2000-10-03 2002-04-05 2M2F INSULATING REACTIVE MINERAL LOAD
US8079465B2 (en) 2004-07-14 2011-12-20 Bae Systems Plc Safety packaging

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532448A (en) * 1939-05-22 1941-01-24 William Maxwell Improvements in or relating to means for stemming in blasting operations
FR905394A (en) * 1942-12-01 1945-12-03 Improvement to silicate-based paints ensuring their adhesion to plaster, wood, metals and other materials
US3049079A (en) * 1957-11-18 1962-08-14 Hercules Powder Co Ltd Waterproof container and closure therefor
CH459858A (en) * 1965-12-15 1968-07-15 Continental Capital Control Ct Additive for cement-based mixes and process for their preparation
ZA694554B (en) * 1969-06-27 1971-02-24 African Explosives & Chem Improvements in explosive compositions and their use
EP0010345A1 (en) * 1978-10-20 1980-04-30 KAISER ALUMINUM & CHEMICAL CORPORATION Method of repairing a refractory structure
WO1981002857A1 (en) * 1980-03-31 1981-10-15 J Mclaren Flame retardant plywood panel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532448A (en) * 1939-05-22 1941-01-24 William Maxwell Improvements in or relating to means for stemming in blasting operations
FR905394A (en) * 1942-12-01 1945-12-03 Improvement to silicate-based paints ensuring their adhesion to plaster, wood, metals and other materials
US3049079A (en) * 1957-11-18 1962-08-14 Hercules Powder Co Ltd Waterproof container and closure therefor
CH459858A (en) * 1965-12-15 1968-07-15 Continental Capital Control Ct Additive for cement-based mixes and process for their preparation
ZA694554B (en) * 1969-06-27 1971-02-24 African Explosives & Chem Improvements in explosive compositions and their use
EP0010345A1 (en) * 1978-10-20 1980-04-30 KAISER ALUMINUM & CHEMICAL CORPORATION Method of repairing a refractory structure
WO1981002857A1 (en) * 1980-03-31 1981-10-15 J Mclaren Flame retardant plywood panel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 75, no. 10, 6 septembre 1971, page 111, no. 65773x, Columbus, Ohio, US; & ZA-A-69 04 554 (AFRICAN EXPLOSIVES AND CHEMICAL INDUSTRIES LTD.) 28-12-1970 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2814740A1 (en) 2000-10-03 2002-04-05 2M2F INSULATING REACTIVE MINERAL LOAD
WO2002028797A1 (en) 2000-10-03 2002-04-11 2M2F Insulating reactive mineral filler
US8079465B2 (en) 2004-07-14 2011-12-20 Bae Systems Plc Safety packaging

Also Published As

Publication number Publication date
FR2600999B1 (en) 1990-12-21

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