WO2002028797A1 - Charge minerale reactive isolante - Google Patents
Charge minerale reactive isolante Download PDFInfo
- Publication number
- WO2002028797A1 WO2002028797A1 PCT/FR2001/003023 FR0103023W WO0228797A1 WO 2002028797 A1 WO2002028797 A1 WO 2002028797A1 FR 0103023 W FR0103023 W FR 0103023W WO 0228797 A1 WO0228797 A1 WO 0228797A1
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- WIPO (PCT)
- Prior art keywords
- mineral filler
- reactive
- binder
- insulating
- mineral
- Prior art date
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Classifications
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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
- 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
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
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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
- C04B28/02—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
Definitions
- the present invention relates to an insulating reactive mineral filler, said filler being in particular intended to create, by mixing with different binders such as polymerizable resins, adhesives in aqueous phase or hydraulic binders, an active non-tumescent protection against fire and / or thermal attacks causing a thermal shock, in particular greater than 1000 ° C.
- binders such as polymerizable resins, adhesives in aqueous phase or hydraulic binders, an active non-tumescent protection against fire and / or thermal attacks causing a thermal shock, in particular greater than 1000 ° C.
- the present invention also relates to an active insulating product against fire and / or thermal attack causing thermal shock greater than 1000 ° C.
- Said active insulating products are obtained by mixing the reactive charge, object of the invention, with different binders and can be used in the form of thin walls capable of maintaining a cold face when the other face is exposed to said fire or attack thermal.
- French patent FR 2 600 999 has described an insulating charge useful for producing an insulating material intended for the protection of pyrotechnic equipment. This protection must be able to withstand a high temperature, in particular greater than 800 ° C. in the hot phase for a short time but nevertheless greater than 20 minutes, while maintaining a temperature on the cold face less than 150 ° C. throughout the duration of exposure.
- the insulating material described in this prior patent is based on an insulating mineral filler bound by elastomeric organic resins or by a common mineral binder with hydraulic setting (commonly called "hydraulic binder").
- the mineral insulating filler is composed of a mixture comprising the weight proportions of the following compounds:
- nodules have a size of the order of 1 to 10 mm,
- This insulating material is intended to be used either as tamping between two rigid panels, or in polymerized mass.
- the binder can either be mineral in nature with incorporated hydraulic setting or organic in nature and polymerizable, being incorporated in a content of at least 10% of said filler.
- the connection of the filler can also be carried out by a mineral binder obtained by the surface react on between a talc and a sodium silicate in solution in water, this binder and int also used at a content of at least 10% of the load.
- This product is intended to withstand a high temperature for only a short period of 15 to 20 minutes corresponding to the regulatory time given to the security personnel to intervene and prevent the possible explosion of the pyrotechnic material. It appears in fact that beyond a period of 10 min, the temperature of the cold face increases rapidly in a substantially linear continuous manner from the initial temperature of approximately 100 ° C., until reaching a temperature greater than 350 ° C after 30 min.
- An object of the present invention is therefore to provide an insulating reactive mineral filler intended to create a non-tumescent active protection for several hours against fire and / or thermal attack causing thermal shock, in particular above 1000 ° C. .
- an object of the present invention is to provide an insulating reactive mineral filler making it possible to obtain, by mixing with a binder, in particular polymerizable resins, adhesives in aqueous phase or hydraulic binders, products which can be used as a wall under low thickness, in particular less than 25 mm and capable of maintaining a so-called cold face at a temperature below 130 ° C continuously for several hours, in particular more than 4 h, while the other so-called hot face is brought to more than 1000 ° C, especially over 1100 ° C.
- Another object of the present invention is to provide an insulating reactive product which verifies the lightness and processing characteristics adapted to the various possible industrial applications.
- Another object of the present invention is to provide a reactive mineral filler and a non-tumescent insulating reactive product, resistant to bursting in the event of thermal shock, and resistant to ablation in the event of high-impulse flames.
- the present invention provides an insulating reactive mineral filler, characterized in that it comprises at least a mixture of particles of:
- a first component chosen from hydrated expanded mineral compounds based on silicate, the melting point of which is greater than 1400 ° C., and the particulate structure of which is an open structure, and - a second component comprising at least:
- an organic bentonite derivative preferably an organic montmorillonite derivative, and / or
- precipitated silica or precipitated silicate having a high specific surface, preferably a BET specific surface of at least 25 m 2 / g, more preferably at least 100 m 2 / g.
- Said second component is a "thixotropic compound", that is to say a compound capable of forming a thixotropic gel with a liquid.
- the term “expanded” means that said mineral compound has undergone a heat treatment at a temperature higher than its calcination temperature - the calcination temperature being the temperature from which the compound is completely dehydrated - and that it increases several times volume by the fact that the water molecules initially contained when released, expand the structure, in particular by allowing a large volume of air to attach to said structure.
- hydrated is understood to mean that said expanded mineral compound rehydrates after said heat treatment and has a weight content of water of 1 to 15%, preferably 3 to 10%.
- open structure is understood to mean a structure allowing the air bound to the structure to escape therefrom when said compound is subjected to thermal aggression, in particular to an impact greater than 1000 ° C., without destroying the structure, in particular without that the overpressure created by the increase in air volume causes the structure to burst.
- hydrated expanded mineral compound based on silicate means a compound which comprises as majority elementary constituent the element Si, which is in the form of silica or silicate.
- said first component is chosen from expanded vermiculite and expanded perlite.
- said expanded mineral compound has a structure which does not include a fully partitioned hollow zone, that is to say no closed cavity, that is to say also a structure having openings allowing any fluid which it contains to to be able to escape from it in the absence of physicochemical bond.
- the second component comprises a mixture of: . organic bentonite derivative, preferably an organic montmorillonite derivative, and
- precipitated silica or precipitated silicate having a high specific surface, preferably a BET specific surface of at least 25 m 2 / g, more preferably at least 100 m 2 / g.
- a reactive insulating mineral filler according to the invention comprises a second component which comprises:
- an organic bentonite derivative preferably an organic montmorillonite derivative, and. precipitated silica having a high specific surface, preferably a BET specific surface of at least 100 m 2 / g, more preferably at least 150 m 2 / g.
- an advantageous mineral filler comprises the following weight proposals: 20 to 50% of expanded vermiculite and / or of expanded perlite, preferably vermiculite,
- organic bentonite derivatives also called “organophilic bentonite”.
- the mineral filler according to the invention can be used with a binder which can also be a cold polymerizable resin, a hydraulic binder or an adhesive in aqueous phase, the choice of binder and its proportions being a function of the intrinsic characteristics sought.
- a binder which can also be a cold polymerizable resin, a hydraulic binder or an adhesive in aqueous phase, the choice of binder and its proportions being a function of the intrinsic characteristics sought.
- binder of organic binders consisting of polymerizable two-component mixtures comprising a polymer resin and a hardening agent, for example the two-component silicone resins sold by the companies RHODIA (FRANCE) and GENERAL ELECTRIC (USA) under RTV references.
- This type of binder is more particularly suitable for producing products made of solid materials.
- adhesives in aqueous phase can also be used, in particular for producing materials intended to be coated or to be impregnated, in particular in a substrate made of non-woven material or fibrous substrate.
- Mention may be made, for example, of aqueous dispersions of acrylic copolymers or of PVA (polyvinyl alcohol).
- a reactive charge according to the invention mixed with binders of different natures, provides materials making it possible to obtain a finished product combining all the desired advantages listed above, and in addition a classification of fire behavior (flammability) according to NF standards and ISO, MO or M1 depending on the binder used.
- the charge according to the invention therefore consists of a first component which acts as a catalyst and a second component, the thixotropic compound which acts as an active element or reagent.
- this thixotropic compound by combining with the binder used in the form of gel, creates physicochemical bonds at the extremely solid molecular level between said gelling agent and water or organic binder. These connections can only be broken by strongly endothermic reactions during a fire or a major thermal attack.
- the first component acts as a catalyst, because it absorbs very quickly, initially, the heat flux to which the product is exposed and restores this heat flux gradually to the reagent by convection and by radiation.
- the catalyst makes it possible to initiate and maintain the endothermic reaction which consumes the thermal flow by causing the rupture of the connections between gelling agent and binder.
- This faculty for absorbing the heat of the catalyst is linked to the presence of air in the expanded compounds, which by their open structure, are capable of withstanding the high temperatures concerned, as explained below in Example 14.
- said thixotropic mineral compound is organophilic bentone.
- said thixotropic mineral compound is precipitated silica or precipitated silicate.
- Fillers comprising both organophilic bentonite which is a thixotropic agent suitable for a non-polar organic binder and precipitated silica or precipitated silicate which are thixotropic agents suitable for a polar binder, in particular an aqueous solution, are advantageous, because they can thus be formulated with any polar or hydrophobic binder.
- these fillers have the additional advantage that the gelling agent of the organophilic bentonite type has an additional texturing function, in the case of a mixture with a polar binder, such as a hydraulic binder intended to form a gel with supply of aqueous solution.
- the presence of precipitated silica or precipitated silicate is advantageous, because it increases the thixotropy of the filler, the precipitated silica and silicate also binding to organic binders, which compensates the fact that the organophilic bentone is capable of binding only with a quantity of organic binder less than the quantity of polar binder capable of binding with the precipitated silica or silicate.
- the reactive charge according to the present invention is in the form of a powder comprising particles of variable particle size, generally between 1 ⁇ m and 4 mm, which combine with the various binders to form stable products producing no harmful emanation during its storage, its implementation and its reaction to heat.
- This reactive charge according to the invention is composed of a mixture of several products of mineral origin obtained by grinding, washing, drying and sizing, and assembled by kneading according to a particular formulation where in particular the compounds described below.
- Vermiculite is a hydrated mineral compound from the group of phyllosilicates, also known under the name "hydrated mica phlogopite”. Vermiculite is in the form of characteristic lamellar particles which can be clearly discerned under microscopy. Lamellar particles of vermiculite have the remarkable property of increasing in volume several times when they are heated to high temperature, in particular above 600 ° C. by the fact that air is associated with its structure enclosed between the lamellae. The product obtained is known to those skilled in the art under the name of "exfoliated vermiculite” or “expanded vermiculite”. Several sources of vermiculite are thus known in South Africa, China, Brazil, clouds and the USA.
- the expanded vermiculite particles according to the present invention more particularly have a size of 200 ⁇ m to 1.5 mm (size of their largest dimension).
- the weight proportions of the main constituents of an expanded vermiculite, more particularly used according to the invention, are as follows:
- the other secondary constituents in terms of weight proportions in the expanded vermiculite can be: K 2 O, MnO, NaO 2 , TiO 2 , P 2 O s in proportions generally less than 0.5%.
- Expanded vermiculite is marketed in particular by companies SCHUNDLER (USA) and CMMP (FRANCE) (Materials and Raw Materials Counter) and EFISOL (FRANCE).
- Perlite is a form of glass, i.e. a volcanic silica rock of transparent to black color, whose particles have the characteristic of increasing in volume up to 20 times when they are heated to a temperature higher than 850 ° C.
- the perlite particles burst like a "popcorn", which allows the water it contains to vaporize and thus creates small cavities in which air is trapped.
- the particle size of expanded perlite and more particularly from 100 ⁇ m to 4 mm.
- the color of the expanded perlite particles is white and their density is approximately 30 to 200 kg / m 3 . Expanded perlite is sold by the company SCHUNDLER.
- the elementary composition of perlite more particularly comprises the following elements, in the following weight proportions,
- precipitated silica is a generic term known to those skilled in the art which designates compounds comprising at least 40% of SiO 2 with a BET specific surface of at least 25 m 2 / g, more particularly 25 at 800 m / g and preferably at least 100 m 2 / g obtained by precipitation of an alkali silicate solution, generally sodium silicate, by reaction with acids, optionally partially replaced by metal salts. These precipitates are then filtered, dried and ground to give particles of 1 to 100 ⁇ m, particularly 10 to 100 ⁇ m.
- precipitates When the acid used for precipitation is completely or partially replaced by metal salts, such as calcium chloride or aluminum sulphate, precipitates are obtained which contain a reduced SiO 2 content, in particular particles comprising from 20 to 80% of SiO 2 and from 20 to 40 of AI 2 O 3 and from 2 to 30% of Na 2 O with a specific surface of 35 to 150 m 2 / g. These precipitates with a reduced SiO 2 content are then also called “precipitated silicates” or “synthetic silicates”. These “precipitated silicates” or “synthetic silicates” also have the particularity of having a high structural humidity greater than 10%, in particular from 15 to 20%. Preferably, a high purity synthetic sodium silico-aluminate is used which, due to its structural humidity of 20%, has an action delaying the appearance of flame when used with an organic binder.
- metal salts such as calcium chloride or aluminum sulphate
- precipitated silica and “precipitated silicates” are marketed by Degussa (Germany) under the Sipernat ® brand.
- Organic bentonite derivatives also called organophilic bentonite gelling agents or betone gelling agents, are known to those skilled in the art. These are products consisting of organic derivatives of clay mineral compounds, in particular bentonite of the montmorillonite type resulting from the ion exchange reaction between the natural clay mineral compounds. They are made from a smectic clay composed mainly of natural hydrated aluminum silicates and a little magnesia, mainly bentonite of the montmorillonite type. The mineral cations of the mineral compound, in particular bentonite, are replaced by organic cations. Products of this type are produced by the company CECA ® (FRANCE), under the brand CLARSOL ® .
- the particle size of the organophilic bentonite particles according to the present invention is more particularly from 0.1 to 200 ⁇ . They include a certain amount of bound water, in particular a moisture content by weight of 5 to 15%.
- organophilic mineral gelling products have a specific weight of between 1.7 and 1.8 kg / dm 3 , a loose density of less than 0.45, a water content of less than 15%, a pH of between 8.5 and 10.5.
- Organic bentonite derivative gelling agents have the property of forming thixotropic gels in organic liquids.
- Organic bentonite derivatives by their organophilic nature, have a hydrophobic character. However, these organic derivatives of organophilic bentonite retain a polar and hydrophilic character. There is indeed 1 to 3% of water strongly included in the crystallization network of these compounds, and this quantity is necessary to ensure good gelling properties, which would be reduced if it were eliminated before freezing.
- the different types of organic bentonite derivatives are differentiated by the relative proportions of the polar and non-polar constituents that compose them.
- gelling agent depends on the polarity of the dispersion medium for which the charge is intended.
- organic binders comprising in particular organic binders based resin or organic polymers, which are low polarity media, it preferably uses an organic derivative of Bentone sold under CLARSOL ® by the company CECA (FRANCE).
- An insulating reactive mineral filler according to the present invention can comprise adjuvants depending on the application of the product for which it is intended.
- a refractory mineral compound chosen from:
- particles of a silico-aluminous refractory compound with a high chamotte content of class 40 or 42 that is to say containing at least 40% of AI 2 O 3 , which improves the refractoriness and the resistance in an oxidizing medium
- Neutron retarding agents can also be used as an adjuvant, in particular for producing an enclosure for transporting radioactive materials, in particular fissile materials.
- These neutron retarding agents can be of the graphite or zinc borate or borate type.
- alumina trihydrate is a generic term known to those skilled in the art which designates compounds comprising at least 60% of AI 2 O 3 and having a high natural humidity, in particular greater than 30%.
- the various additives do not exceed 30% by weight of the total composition of the mineral filler. 1 to 500 ⁇ .
- a reinforcement can also be created by adding organic or mineral fibers, preferably in a volume content of 0.5 to 5%, relative to the total volume of the mineral filler without fiber, in particular fibers from 5 to 50 mm in length. , more particularly from 10 to 40 mm, more particularly still glass fibers.
- the present invention also relates to an active insulating product against fire and / or thermal attack causing a thermal shock, in particular greater than 1000 °, characterized in that it comprises an insulating material resulting from the mixture of a mineral filler according to l invention, and an organic or mineral binder.
- said binder is an organic binder and said insulating material comprises in relative weight proportion between said filler and said organic binder:
- said binder is a mineral binder and said insulating material comprises in relative volume proportion between said filler and said mineral binder, in particular hydraulic binder:
- it is in the form of a wall at least 10 mm, preferably at least 25 mm thick, and it is capable of maintaining a cold face. at a temperature below 130 ° C continuously for more than 4 h, while the other hot face is brought to more than 1100 ° C.
- the present invention provides active insulating products against fire, that is to say developing an endothermic reaction consuming an aggressive heat flux, intended in particular for the fields of building, public works, petrochemicals, packaging, transport and of the industry in general.
- the present invention provides load-bearing structures, that is to say taking up static or dynamic forces, such as posts, walls, arches, slabs or non-load-bearing structures, such as partitions, false ceilings, doors, tiles. , protective coating of frames, covering of various elements in the building or of safety devices using active insulators.
- Said insulating materials according to the invention have the advantage of being implemented by molding, tamping, projection, plating, hanging, coating or even by impregnation.
- Said insulating materials and the products according to the invention can be used in all technical fields where long-term protection against the effects of a fire is required and which require the use of products having both lightness (similar density 1) and low thickness.
- the following fields can be mentioned more particularly:
- Example 1 shows two temperature profiles of two products tested in cold face to Example 14.
- the expanded vermiculite used in the examples is marketed by the company under the reference EFISOL Vermex ® FINE, whose characteristics are:
- the precipitated silica used in Examples 1 to 13 below is sold by Degussa under the reference Sipernat ® 22S and has the following characteristics:
- the precipitated silica used in Example 14 is a synthetic sodium silicoaluminate sold by Degussa under the Sipernat ® reference 44 and has the following composition:
- a refractory compound with a very high alumina content was used such as common corundum for a temperature below 1900 ° C, which increases the refractoriness and corrosion by metal oxides and has the following composition:
- the gelling Bentonite used could also be a product marketed by CECA under the brand CLARSOL ® W100 with the following features:
- composition natural sodium montmorillonite base, Wyoming origin - particle size between 10 and 200 ⁇ m - Humidity 8 to 12% - gray color,
- the binders based on polymerizable resins used were in particular the RTV141 silicone resin from the company RHODIA, which consists of a two-component mixture for a proportion of the resin / hardener mixture of 10/10 by weight, according to a cross-linking mechanism by polyaddition.
- RTV 11 - RTV 31 - RTV 627) and single-component (RTV 112 - RTV 118) mixtures sold by the company GENERAL ELECTRIC (USA) may be suitable.
- furan resins in particular the two-component mixture of UF / FA type marketed by the company BORDEN CHIMIE (ENGLAND), under the reference TC557.
- a neutron slowing agent was used, which could be of the graphite or zinc borate type or even anhydrous borate sold by the company CMMP.
- the retarding agent was incorporated into the other elements of the mineral filler in powder or granular form.
- alumina the composition of which is:
- alumina trihydrate is marketed in particular by the company HUBER engineered materials (Denmark) under the brand MICRAL®
- the mineral fillers were prepared in the mixing and kneading of the various mineral compounds in a horizontal rotary mixer. It is possible to identify the different types of particles in the filler by comparison in microscopic analysis with the reference samples. By “mass spectroscopy”, it is also possible to identify the mineral compounds of each particle.
- the reactive mineral fillers according to the invention intended to be mixed with resin binders were mixed in the relative weight proportions of 50% of filler for 50% of binder.
- the mineral fillers intended to be mixed with hydraulic binders were mixed in relative volume proportions of 70% of powdery mineral filler for 30% of hydraulic binder.
- EXAMPLE 1 Mineral filler for use with a hydraulic binder of the molten cement or aluminous cement type.
- the mineral filler comprises the following composition in weight proportion:
- EXAMPLE 2 Mixture of the mineral filler of Example 1 with a hydraulic binder of the cement type.
- Example 1 The mineral filler of Example 1 is mixed with an aluminous cement of the molten type, sold by the company LAFARGE under the name "CIMENT FONDU LAFARGE" in the relative volume proportions of 30% of cement for 70% of mineral filler according to the following protocol:
- Example 1 Saturate with water by injecting steam or water spray on the mineral filler powder of Example 1 to obtain a wet pulverulent product, the relative proportions of mineral filler powder and water being 1 Kg of insulating mineral filler powder for 1 I of water.
- the end user only has to use the amount of water required to take up the hydraulic binder, ie 0.6 l of water. It should be noted that if the dry mineral filler powder is mixed directly with the hydraulic binder, adding water only after mixing, there is a heterogeneity of the mixture (appearance of lumps) and a non-homogeneous hydraulic setting, d 'where it results in the risk of cracking of the finished product.
- EXAMPLE 3 Reactive mineral filler intended to be mixed with an adhesive binder in the aqueous phase.
- the filler comprises the following components in the following weight proportions: - expanded vermiculite: 43%,
- This mineral filler is useful for being mixed in particular with an adhesive binder in the aqueous phase.
- EXAMPLE 4 Reactive mineral filler useful for mixing with a silicone elastomer binder.
- the active mineral filler has the relative weight proportions of the following components: - expanded vermiculite: 45%,
- This reactive inorganic filler is intended for a mixture in relative weight proportions of 50/50, with reference RTV 141 silicone elastomer ® from Rhodia.
- EXAMPLE 5 Reactive mineral filler useful for a product which must exhibit resistance at a temperature of 1300 to 1400 ° C. in a strongly oxidizing medium.
- the mineral filler included the composition in the following relative weight proportions: - expanded vermiculite: 42%,
- This mineral filler is more particularly intended to be mixed at the rate of 50/50 with a binder of the polymerizable resin type.
- EXAMPLE 6 Reactive mineral filler useful for a product which must exhibit resistance at a temperature of 1300 to 1400 ° C. in a strongly oxidizing medium for use with a hydraulic binder.
- the reactive mineral filler comprises the composition in the following relative weight proportions:
- This mineral filler can be mixed with a hydraulic binder in relative volume proportions of 30% load for 70% hydraulic binder.
- the reactive mineral filler comprises the composition in the following relative weight proportions:
- EXAMPLE 8 Reactive mineral filler for the production of a product which must stand at temperatures of 1300 to 1600 ° C. in an oxidizing medium, and intended for use with a hydraulic binder.
- the reactive mineral filler comprises the composition in the following relative weight proportions:
- EXAMPLE 9 Reactive mineral filler for use with a resin binder to produce a product having resistance at a temperature of 1300 to 1800 ° C. in a reducing atmosphere.
- the reactive mineral filler comprises the composition in the following weight proportions:
- EXAMPLE 10 Reactive mineral filler for use with a hydraulic binder to produce a product having resistance at a temperature of 1300 to 1800 ° C. in a reducing atmosphere.
- EXAMPLE 11 Reactive mineral filler comprising a neutron retarding adjuvant intended for mixing with a resin binder.
- the reactive mineral filler comprises the composition in the following weight proportions:
- EXAMPLE 12 reactive mineral filler comprising a neutron retarding adjuvant intended for mixing with a hydraulic binder.
- the reactive mineral filler comprises the composition in the following weight proportions: - expanded vermiculite: 40%,
- Reactive mineral filler comprising a flame retardant adjuvant intended for mixing with an organic binder:
- Example 2 The product of Example 2 (mineral filler + hydraulic binder) exhibited a class MO non-flammability.
- the product of Example 4 (mixture of mineral powder + resin binder) exhibited a non-flammability of class M1.
- the PCS (Higher Calorific Power) of the reactive mineral fillers according to the invention is composed of three basic elements, expanded vermiculite, gelling agent bentone and precipitated silica or silicate (s), without binder, measured according to standard ISO 1716, is always negative , in particular from 0 to - 0.5 MJ / kg, more particularly still, the PCT of the mineral filler of Example 4 is - 0.311 MJ / kg.
- a plate of the products obtained in Examples 2 and 4 (hydraulic binder and silicone binder) of dimensions 300 mm ⁇ 300 mm over an average thickness of 25 mm was exposed to an ablative flame constituted by a high-impulse propane torch (flow rate 100 l / s).
- the temperature difference between the two faces of the plate was quantified.
- the hot side was exposed to a temperature of 1150 ° C, which corresponds to the maximum temperature reached in a fire after 2 hours.
- the cold face did not exceed a temperature of 125 ° C in contact with said face, it being understood that a deviation of just 5 mm from said plate makes it possible to drop the temperature by 50 ° C.
- thermocouple probes The temperature was recorded using thermocouple probes at different locations.
- Probe n ° 3 symmetrically at the measuring point of probe n ° 1 in contact with the plate.
- Probe n ° 5 placed symmetrically with the probe n ° 2, in contact with the plate outside the area covered by the flame.
- Thermocouple probes at high temperature were used on the hot face brand THERMOCOAX ® type K series 9009 CHROME-ALUMEL coated INCONEL intended for a range of use from - 18 to 1316 ° C, with an accuracy of 0.61 ° C .
- thermocouples were used on the cold face brand THERMOCOAX ® type J series 8555 FER-CONSTANTAN sheathed in stainless steel intended for a range of use from - 18 to 871 ° C, with an accuracy of 55 ° C.
- the 5 probes were each connected to a HONEYWELL VERSAPRI NT ® version 13311/2 temperature recording device. The test took place in an enclosed room protected from the wind. The plate to be tested was presented vertically placed on a metal easel. The axis of the flame was perpendicular to it.
- Example 4 silicon binder
- FIG. 1 the temperature profiles recorded on the cold face are shown with the probe No. 3 of the plate for two different mineral fillers mixed with the same silicone resin binder at a 50/50 weight ratio.
- Curve A was obtained with a mineral filler comprising the following weight proportions: - 40% of pure bentonite (PROLABO ® ),
- Curve A which corresponds to a product described in patent FR 2,600,999, does not have any palliation, the peak reached at 350 ° C. after approximately 1600 seconds of exposure to the propane torch corresponds to the shutdown for invalidation of the 'experience, the temperature on the cold face having largely exceeded the values authorized by the protocol, and the plate starting to disintegrate.
- an insulating mineral filler according to the invention compared to a mineral filler as described in the patent FR 2 600 999 are partly due to the particular structure of vermiculite and perlite compared to that of expanded clay.
- expanded clay is made up of large particles, namely nodules from 1 to 10 mm, which contain air inside. It is indeed a semi-closed structure having an internal structure quite comparable to that of millstone, having both closed cells or cavities, and open cavities separated by thicknesses of a few hundredths to 0, 1 mm. These cavities contain air which can escape through those which are open, but which is trapped and cannot escape freely from those which are closed.
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Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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AU2001293937A AU2001293937A1 (en) | 2000-10-03 | 2001-10-01 | Insulating reactive mineral filler |
EP01974414A EP1322570A1 (fr) | 2000-10-03 | 2001-10-01 | Charge minerale reactive isolante |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/12557 | 2000-10-03 | ||
FR0012557A FR2814750A1 (fr) | 2000-10-03 | 2000-10-03 | Charge reactive destinee a creer des protections actives non tumescente contre l'incendie et/ou les agressions thermiques cause de chocs thermiques superieur a 1000° c |
FR00/15602 | 2000-12-01 | ||
FR0015602A FR2814740B1 (fr) | 2000-10-03 | 2000-12-01 | Charge minerale reactive isolante |
Publications (1)
Publication Number | Publication Date |
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WO2002028797A1 true WO2002028797A1 (fr) | 2002-04-11 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/FR2001/003023 WO2002028797A1 (fr) | 2000-10-03 | 2001-10-01 | Charge minerale reactive isolante |
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Country | Link |
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EP (1) | EP1322570A1 (fr) |
AU (1) | AU2001293937A1 (fr) |
FR (1) | FR2814740B1 (fr) |
WO (1) | WO2002028797A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003280969A1 (en) * | 2002-07-17 | 2004-02-02 | Microtherm International Limited | Thermally insulating moulded body and method of manufacture |
WO2012087259A2 (fr) * | 2010-12-25 | 2012-06-28 | Peryum Araştirma Geliştirme İnşaat Makine Elektronik Danişmanlik Hizmetleri Sanayi Ticaret Limited Şirketi | Matériaux d'isolation / de construction alternatifs et leur procédé de production |
WO2016186593A1 (fr) | 2015-05-15 | 2016-11-24 | Çerezci Alperen | Matériaux de construction ayant une propriété d'isolation thermique élevée et procédé de fabrication |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1830253A (en) * | 1931-01-03 | 1931-11-03 | American Colloid Co | Composition material |
EP0217569A2 (fr) * | 1985-09-10 | 1987-04-08 | Calvin Shubow | Composition pour ignifugation et isolation |
FR2600999A1 (fr) | 1986-04-10 | 1988-01-08 | Eisenschmidt Henri | Isolant thermique pour environnement severe |
US4795776A (en) * | 1987-01-29 | 1989-01-03 | Dixon International Limited | Fire-resistant composition |
FR2733538A1 (fr) * | 1995-04-25 | 1996-10-31 | Naud Jean Paul | Element coupe feu isophonique en materiau composite |
-
2000
- 2000-12-01 FR FR0015602A patent/FR2814740B1/fr not_active Expired - Fee Related
-
2001
- 2001-10-01 AU AU2001293937A patent/AU2001293937A1/en not_active Abandoned
- 2001-10-01 EP EP01974414A patent/EP1322570A1/fr not_active Withdrawn
- 2001-10-01 WO PCT/FR2001/003023 patent/WO2002028797A1/fr not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1830253A (en) * | 1931-01-03 | 1931-11-03 | American Colloid Co | Composition material |
EP0217569A2 (fr) * | 1985-09-10 | 1987-04-08 | Calvin Shubow | Composition pour ignifugation et isolation |
FR2600999A1 (fr) | 1986-04-10 | 1988-01-08 | Eisenschmidt Henri | Isolant thermique pour environnement severe |
US4795776A (en) * | 1987-01-29 | 1989-01-03 | Dixon International Limited | Fire-resistant composition |
FR2733538A1 (fr) * | 1995-04-25 | 1996-10-31 | Naud Jean Paul | Element coupe feu isophonique en materiau composite |
Also Published As
Publication number | Publication date |
---|---|
AU2001293937A1 (en) | 2002-04-15 |
FR2814740B1 (fr) | 2003-07-04 |
EP1322570A1 (fr) | 2003-07-02 |
FR2814740A1 (fr) | 2002-04-05 |
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