EP2590817A1 - Hitzeschutzmittel in folienform - Google Patents
Hitzeschutzmittel in folienformInfo
- Publication number
- EP2590817A1 EP2590817A1 EP11731240.5A EP11731240A EP2590817A1 EP 2590817 A1 EP2590817 A1 EP 2590817A1 EP 11731240 A EP11731240 A EP 11731240A EP 2590817 A1 EP2590817 A1 EP 2590817A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- hybrid film
- film according
- film
- intumescent layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/02—Inorganic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10311—Intumescent layers for fire protection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
Definitions
- the invention relates to a heat protection agent and a process for its preparation, in particular a heat protection agent in the form of a roll-up coated film, and to the use of the heat protection agent in a heat protection element.
- Translucent heat protection elements are known in various embodiments and are used inter alia as components.
- the support elements are mostly glass plates, but other translucent materials, such as plastics, are used. Particularly high demands are placed on the heat protection on components which are used in the form of glazing for facades and as delimitations of interior spaces, such as partitions and doors, or in shipbuilding and offshore.
- heat-insulating translucent laminated glasses are known in which a layer of dried water-containing alkali metal silicate is arranged between two glass surfaces. When heat is applied to this laminated glass, for example in the event of a fire, the intumescent layer foams from alkali lisilicate, and the water contained in the alkali silicate layer evaporates.
- the intumescent layer becomes impermeable to heat radiation and forms an effective protection against the undesirable heat transfer for a certain time.
- the glass plates shatters, the glass parts adhere to the inflated foam layer.
- several glass plates and intumescent layers of alkali silicate are arranged one behind the other.
- EP 1 431 027 describes heat protection agents for
- the heat protection means comprises at least one hybrid film system in which at least one film is coated with intumescent material.
- at least one constituent of the film system should have a silicate base, in particular with a molar ratio between SiC> 2 and Na 2 O, between 2.0 and 6.5, preferably 3-5.0.
- the layers produced by this process are brittle and / or have cracks and / or bubbles or a low residual moisture.
- the object of the invention was to provide a heat-protection agent in the form of a hybrid film which has good heat-protection properties, gives optically good values, can be transported well, stored and laminated.
- the hybrid film system comprises at least one carrier film and at least one intumescent layer, wherein the intumescent layer is a water-containing silicate composition consisting of:
- M2O selected from the group consisting of sodium oxide, potassium oxide, lithium oxide and mixtures thereof
- Oxides of polyvalent cations in the context of the present invention are, in particular, C 1 -C 3 -B 2 O 3, SnC 2, TiC 2, ZnO and mixtures thereof, zinc oxide-containing mixed oxides, in particular aluminum-doped mixed oxides such as Zn 2 Sn 2 O 3, zinc stannates (ZnSnO x ) or sodium-potassium Zinc stannates (Na-K-ZnSnO x ).
- a hybrid film system according to the invention which comprises at least one support film and at least one intumescent layer is obtainable by curing a dispersion containing S1O2 with alkali metal hydroxide, the dispersion containing S1O2 being composed of
- SiO 2 may comprise not more than 5% by weight of oxides of polyvalent cations, in particular not more than 3% by weight
- the carrier film preferably has high elasticity. This has the advantage that the film increases the mechanical properties of a heat protection agent produced by means of the hybrid film and - provided sufficient elasticity or flexibility of the intumescent layer - can be transported rolled up. Especially preferably, the carrier film has high
- a starting material For use in hybrid films, a starting material has been found to be particularly suitable, the curing of which is carried out by reaction of SiO 2 with hydroxide ions, in particular by means of a potassium hydroxide solution, and in the presence of a defoamer and a polyol.
- hydroxide ions in particular by means of a potassium hydroxide solution
- defoamer and a polyol in particular by means of a potassium hydroxide solution
- the defoamer a siloxane which may optionally act as an internal primer, promotes degassing of the intumescent layers during manufacture, i. During and after pouring onto the film, so that the infusion can be done faster and / or when mixing the components and / or during infusion so small bubbles arise that they during drying respectively. Hardening process disappear, i. are no longer visually perceptible.
- a primer has the effect that the adhesion of the intumescent layer to the fire-side film or the fire-side glass pane is reduced so that it leads in the event of fire to a large-scale detachment of the intumescent layer from the film / glass pane while avoiding breaks. Thanks to the use of an inner primer, the previous primer treatment of the glass panes can be dispensed with. Furthermore, the inner primer can also improve the release of the film, what for the production of glass elements without film is advantageous.
- silicon-containing compounds act as defoamers and primers in intumescent layer compositions without having a negative effect on the end properties of the intumescent layer has already been described in WO 2009/155719.
- such compounds are siloxanes.
- Siloxanes such as alkylsiloxanes, in particular polymonoalkylsiloxanes or polydialkylsiloxanes having short alkyl groups, for example linear or branched C 1 to C 4 alkyl groups, with 5 to 350 monomer units, preferably 15 to 350 monomer units, in particular 90 to 350 units, have proven particularly suitable Siloxanes, the polymer chain can be substituted at one or both ends (in or- and / or ⁇ -position) with alkyl, in particular methyl groups or optionally with other organic radicals.
- a particularly preferred siloxane is polydimethylsiloxane (also poly [oxy (dimethylsilylene)] or a- (trimethylsilyl) - ⁇ -methylpoly [oxy (dimethylsilylene)]) (Mw of from 1,000 to 30,000, preferably from 6,000 to 30,000, in particular from 10,000 to 25,000, Density 0.90 to 0.98 g / cm 3 , in particular around 0.98 g / cm 3 ).
- Such siloxanes can simultaneously act as defoamers and internal primers. They can be used individually or as a mixture.
- Suitable polydimethylsiloxanes are also known under the names dimethicone or dimethicone, polysilanes, E 900 and silicone oil.
- Suitable polydimethylsiloxanes are, for example, available from Dow Coming Corporation of Midland, Michigan, USA; Bayer Industrial Products GmbH & Co. KG, Leverkusen, DE; Wacker-Chemie GmbH, Kunststoff, DE and Acros Organics, Belgium to name only a few.
- ammonium salts of the polysiloxanes optionally together with free ammonia or else just the addition of ammonia or another which improves the appearance and / or the _ -
- the silica is pyrogenic S1O2
- siloxane provides better degassing and thus faster processing or processing time.
- the pot life can be varied within wide limits, and thanks to the siloxane-based defoamer according to the invention, the viscosity or stability of the heat-protective casting material essential for film coating without boundary limitation can be set.
- the cured intumescent layers are also characterized by improved compared to analog intumescent layers without siloxane fire properties.
- a suitable SiO 2 dispersion for solidification by means of alkali addition consists of:
- SiO 2 35-52% by weight of SiO 2, of which at most 5% by weight of oxides of polyvalent cations, in particular max. 3 wt .-%, can be
- polyol in particular glycerol and / or
- Ethylene glycol wherein the sum of all ingredients at least 99 wt .-% makes up, preferably 100 wt .-%
- Preferred intumescent layers in the cured state have a molar ratio of silicon dioxide to alkali metal oxide in the range of 5.2: 1 to 2.0: 1, in particular 3.5: 1 to 2.5: 1.
- This molar ratio may characterize a polysilicate or a mixture of polysilicate with therein enclosed nanoscale, ie invisible to the eye silicon dioxide particles.
- Layers are preferably in the range of 35% to 60% by weight, the content of silica in the range of 30 to 55% by weight, the content of alkali metal oxide (M2O) selected from the group consisting of sodium oxide , Potassium oxide, lithium oxide and mixtures thereof, is preferably at most 18 wt .-% and the polyol, in particular the glycerol content is usually 5 to 23 wt -.%.
- M2O alkali metal oxide
- the product In order to obtain good roll-up or unrollability without heating even with high modules, instead of a complete curing, in which the product not only receives the final hardness, but also becomes transparent, only a partial or pre-hardening can be made.
- the intumescent layer remains milky, but also more elastic. With only pre-curing or if plate material is to be produced even modules up to 6.0 can be used.
- suitable polyols such as ethylene glycol, propylene glycol and in particular glycerol.
- Such stabilized silicic acids can be solidified by addition of alkali, e.g. NaOH, KOH etc., with KOH being preferred over NaOH and / or by means of network formers such as aluminum oxide and boron oxide.
- alkali e.g. NaOH, KOH etc.
- KOH being preferred over NaOH and / or by means of network formers such as aluminum oxide and boron oxide.
- Preferred SiO 2 sources are precipitated silica and silica sols. Despite the pyrogenic S1O2 higher OH group density in the sol or on the surface of the precipitated silica and other particle sizes of the primary and secondary particles, precipitated silicas and / or silica sols have proven to be very suitable to control not only the pot life but also the casting viscosity. This can be achieved by varying the mixing ratios in a range from 50 mPas ⁇ l to 500 mPas! Taxes.
- the siloxane can be added either to the silicate- or silicon dioxide-containing component or to the hardener component, the alkali, or during the preparation of the interlayer. Since it may be advantageous, especially when using SiO 2 particle dispersions, to degas these dispersions, the defoamer is preferably added to the SiO 2 dispersion. Also possible, but at least not preferred for dispersions without addition of silica, would be addition of the defoamer during mixing of the dispersion with the hardener component.
- the defoamer if used, can be added to the dispersion and / or potassium hydroxide solution or added as a third component during the mixing of these two components.
- the amount of siloxane added is about 0.1-10% by weight.
- the addition is in particular 0.25 to 3 wt .-%, particularly preferably 0.25 to 2.5 wt .-% based on the mass of the cured
- the addition can be used in amounts of up to 10 wt .-%.
- An amorphous precipitated silica suitable for the preparation of a heat-protective layer has an SiC> 2 content of at least 98.5% by weight, preferably at least 98.8% by weight, in particular of at least 99.1% by weight, and a BET surface area of from about 20 to about 100 m2 / g. on.
- a BET of from 80 to 100 m 2 / g can be used for more highly concentrated dispersions
- the average primary particle size is usually from 10 to 70 nm, in particular from 20 to 40 nm, wherein larger average primary particle sizes can be used provided that, after curing, all particles are within the particle size distribution below the visible spectrum.
- the secondary particle size of the S1O2 has only an influence on the curing rate (smaller particles slower curing), but not on the dispersion resp. the intumescent layer itself.
- a suitable SiO 2 dispersion for solidification by means of alkali addition consists of:
- SiO 2 35-52% by weight of SiO 2, of which at most 5% by weight of oxides of polyvalent cations, in particular max. 3 wt .-%, can be
- glycerol 7.5 to 30 wt .-% glycerol and / or ethylene glycol.
- Presently preferred dispersions comprise: 47.0% by weight of S1O2
- alkylsiloxane 0.25-3% by weight of alkylsiloxane, in particular polydimethylsiloxane,
- alkylsiloxane 0.25-3% by weight of alkylsiloxane, in particular polydimethylsiloxane,
- the polyol in particular glycerol or ethylene glycol, and KOH serve to stabilize the S1O2 particles in the dispersion.
- the polyol also serves to lower the freezing point and increase the elasticity.
- SiC> 2 content of 45 to 50 wt .-% has proven to be advantageous because at such a content, a sufficient amount of KOH can be mixed as a solution and still highly concentrated intumescent layers are available. Concentrations of up to 52% by weight are possible, with high demands on the dispersing devices being from about 49 to 50% by weight.
- Ammonia may be present in the intumescent layer to improve, for example, properties, in absolute quantities (i.e., calculated as NH 3 100%) from approx.
- Si02 _ dispersion amounts up to about 6 wt .-% aqueous ammonia solution have (32 wt .-%), especially up to about 2.5 wt .-% aqueous ammonia solution by weight (32 wt .-%), and minimum amounts of 0.1 .-%, preferably 0.5 wt .-% aqueous ammonia solution (32 wt .-%) proved to be suitable.
- the preparation of the dispersion may be as described in WO 2009/155719, the disclosure of which is incorporated herein by reference in its entirety.
- the process for producing an intumescent coating composition is effected by adding potassium hydroxide solution to the dispersion or the sol and solidifying it.
- the solidification takes place without dehydration.
- the intumescent coating composition is applied to the carrier film by means of a coating process and subsequently cured.
- the hardening usually follows in an oven batchwise or continuously.
- the oven temperature is usually 60 to 85 ° C, preferably 70 to 80 ° C.
- Hardening can be carried out under dehydration, for example, by curing in "dry" air or “dry” inert gas atmosphere, which is not optimal for two reasons: The water content is reduced, which leads to worse results in case of fire and the surface cures too quickly out, which can lead to inhomogeneities. Preference is therefore given to curing in a moist atmosphere, in particular in a moist protective gas or after application of a cover film, which can be removed after curing or remain on the intumescent layer as part of the hybrid film.
- the curing can be carried out in one step completely or in a two-stage process with first a pre-curing, in which the intumescent layer is cured only to the extent that the required for transport and handling stability is obtained, whereupon in a further step, the actual curing (also referred to as final curing) takes place, in which in addition to the final strength and transparency is obtained.
- the final cure can be accomplished on the film, e.g. after transport in roll form, unwinding and cutting, to plan foils, or after application of the intumescent layer between glass plates.
- the two-stage curing is particularly suitable for films with modules from 6.0: 1 to 4.0: 1.
- the molar ratio of silica to alkali metal oxides in the intumescent layer may be in
- the processing properties and the final properties of the intumescent layer and the hybrid film can be widely controlled.
- the processing properties such as the pot life and the viscosity can be controlled by varying (i), the viscosity additionally by (ii), the elasticity and the behavior in case of fire by (ii) and (iii) Variations are possible thanks to the presence of the siloxane (iv) without affecting the optical properties.
- Reduction of glass corrosion can be achieved by admixing oxides of polyvalent cations that are not soluble in alkaline medium if the intumescent layer should come into direct contact with glass.
- the defoamer (iv) may be either the silicon dioxide or silicate-containing composition and / or the hardener prior to mixing together the intumescent
- the heat protection casting material are added. Since the siloxanes which are suitable as antifoams often also act as internal primers, it is possible to pretreat the carrier belts. ⁇ . , w. , , -. ,
- te i. the carrier film and / or one coated by means of the hybrid film glass can be dispensed with a primer.
- an outer primer in addition to using an inner primer or instead of an inner primer (e.g., when the defoamer exhibits no or poor inner primer action).
- auxiliary layer Invention referred to as an auxiliary layer.
- the intumescent layer can be applied by means of various coating methods. These include, for example, a dipping method in which a film touches the surface of a pourable mass on one side at a constant speed, or knife coating, in which the pourable mass is metered onto a film on one side by means of pumps and nozzles and uniformly to the predetermined layer thickness by a subsequent doctor blade or roll order, in which two themselves
- All these coating methods are precured and / or cured at elevated temperature in a oven, batchwise or continuously.
- the precuring takes place for example at temperatures of 60 to 85 ° C, in particular 70 to 80 ° C for about 1 to 3 hours.
- the subsequent curing takes place in the same temperature range for about 4 to 8 hours.
- These values apply to layer thicknesses of the intumescent layer of about 0.5 to 1.5 mm.
- Both hardening and pre-curing take place in an oven, such as a convection oven, infrared oven or radiation oven.
- Curing can, as mentioned above, with water removal, i. under substantially dry air or inert gas atmosphere or preferably with preservation of water. Water retention during curing is achieved by the ambient atmosphere, for example nitrogen, having a water content which corresponds at least to the water content of the layer to be hardened.
- a cover sheet can be applied before curing at elevated temperature.
- This cover film may remain in the hybrid film composite or be removed after curing.
- it can only be applied during curing and, if necessary, as transport protection
- Cover film - adhesion-reducing coated ie provided with a release layer, for example be siliconized.
- the cover film is sealed in the edge region against the carrier film. This can be done by not coating the carrier film in the edge region with heat protection casting material, so that the film is heat-sealed, welded or after application of a heat-resistant adhesive in this area preferably releasable sealant, such as a hot melt adhesive, can be glued.
- This application of sealant in the edge region is preferably carried out directly before the application of the cover sheet and in approximately the same thickness as the heat protection casting material in order to ensure a good, even application of the cover sheet to the intumescent layer.
- a cover sheet which is not intended to remain in the composite can be transparent, opaque or light-tight.
- the carrier foil is heat-resistant for use in heat protection. It can be made of plastic or metal. It also preferably increases the mechanical stability of the heat protection elements.
- a suitable film is translucent and preferably transparent.
- Other carrier films that can be used, but preferably do not remain in the glass composite, are, for example, polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP) and polyurethane (PUR).
- a cover film is advantageous or else a carrier film whose two sides have different adhesion properties to the intumescent layer, so that the film can be unrolled without breaking the intumescent layer.
- the hybrid films are very well suited for the production of heat protection glazings.
- the hybrid film if appropriate, with removal of the carrier film and / or the cover sheet between two glass plates and connected thereto.
- glass plates for example, completely or partially, thermally or chemically toughened glass are used.
- the rolled-up, precured or cured hybrid film is stretched in a unwinding device and this unwinding device is then clamped in a first laminating unit such that the carrier film comes down and the intumescent layer comes up. Then a glass plate is placed on the intumescent layer and connected to it, preferably by pressing. Subsequently, the hybrid film at the beginning - and if still protruding at the end - of the glass element is cut off.
- the glass plate connected to the hybrid film is removed from the first laminating unit and placed with the glass side down on a second laminating unit.
- the carrier film can be stripped off or even remain on the intumescent layer, depending on the desired properties and the film properties.
- a second glass plate or a glass plate also provided with an intumescent layer is placed on the intumescent layer.
- the upper glass plate is connected to the lower, provided with an intumescent coating glass plate, in particular by pressing.
- the cover film can-as already mentioned above-be peeled off or remain in the composite. If the cover film is left in the glass composite, it preferably has the same properties as the carrier film.
- the production of a glass composite with such a film can be carried out in two stages analogously to the above procedure, wherein the orientation of the film, ie whether the cover film or the carrier film is first connected to a glass pane, does not matter.
- the production of a But glass composite can also be done directly, ie by placing the hybrid film, eg carrier film side, on a first glass plate followed by applying a second glass plate on the other side of the hybrid film, eg cover film side, and pressing after each step or only after the application of the second glass plate.
- An intumescent layer covered on two sides with film has the advantage that the alkaline glass attack of the intumescent layer on the glass panes is prevented or at least reduced, depending on the permeability of the films.
- this process step - if at all - is primarily applied to glass composites which are produced with hybrid films which are provided with cover film and sealed and in which these films remain in the glass composite , In the case of other glass composites, it must be clarified beforehand how much they can already be sealed, or which vacuum may be applied for how long, so that the intumescent layer is not impaired.
- a temperature in the abovementioned range and a vacuum of 50 to 150 mbar, in particular 50 to 75 mbar, are suitable.
- An evacuation step does not bring an advantage to all films, but is well suited for polyvinyl butyral films.
- the glass composite is then cured at 60 to 85.degree. C., in particular at 70 to 80.degree. C., for 4 to 6 hours, in particular after application of a marginal seal.
- the precured or cured hybrid film is already present as a "fixed size", ie in a fixed size, then the above procedure is applied analogously: A carrier film with the intumescent layer facing upwards is applied to the laminating unit, then a glass plate is applied to the intumescent The glass plate connected to the hybrid film is removed from the first laminating unit and placed with the glass side down on a second laminating unit.
- a second glass plate or a glass plate also provided with an intumescent layer is then placed on the intumescent layer
- the upper glass plate is provided with the lower layer provided with an intumescent layer Glass plate, in particular by pressing, connected.
- the lamination process described above can be repeated depending on the desired thickness of the disc or the intumescent layer. After reaching the desired thickness, open edges of the glass sheet are sealed by means of adhesive tape or polymeric sealant.
- the inventive method thus enables the production of heat protection elements in the form of hybrid films, which can be produced in plates or roll form, transported as such and / or stored and glued, for example, in the glasswork on a glass.
- the composite is then completed by applying at least one final glass sheet.
- the glass composite may have more than one hybrid film or at least its intumescent
- Layer per glass sheet include as well as several separated by at least one hybrid film glass sheets.
- heat protection elements made of a plurality of intumescent layers each arranged between two carrier elements are preferred, wherein the carrier elements can be foils or glass panes.
- the hybrid films can - if their format does not conform to the glass format - be cut to the desired size before application to the glass or after application to the glass or in the finished glass composite. It is also within the scope of the invention to produce large glass composites, which are then cut to the desired size. By sealing the edges, a composite glass suitable as a heat protection element is then produced from the finished glass composite.
- This sealing can be done for example by means of a butyl and silicone composition, polysulfite, hotmelt or a fast-curing rubber polymer.
- the hybrid foils are - assuming suitable carrier foils - of high optical quality and permeability. They have good aging resistance and heat protection properties.
- the hybrid films can be made flexible, so that they are at least after heating to 40 to 60 ° C again flawlessly unroll.
- the hybrid films are very well suited for one or more layers to a glass plate, for example a float glass plateau or a prestressed glass plate laminated and then, optionally after removal of the carrier film to be covered by another glass plate. This process can also be repeated several times to make a thicker sandwich system.
- Hybrid foils which are provided on both sides with a plastic film or removable siliconized paper and sealed in the edge area, can work well and - as can be rolled up - stored space-saving for later use.
- Vacuum pump based on compressed air with a venturi system. Such a pump is suitable for achieving - in relation to the amount of air - very large and a very high vacuum level of about 70 mbar.
- Ultra Turrax stirrer as disperser, which works according to a rotor / strator principle.
- a SiO 2 was used with a BET 50 m ⁇ / g and a primary particle size of 55 nm.
- Potassium hydroxide solution consisting of:
- the sol was stirred for about 5 min to homogeneity and then heated to about 50 - 60 ° C with further stirring with the heating module. This temperature was maintained, the sol boiled under vacuum and evaporated 1.96 kg of water. Subsequently, the mixture was cooled down to 20 ° C without vacuum.
- SiC 4 -dispersions were prepared with the following SiO 2 composition or amount based on the amounts indicated above:
- One of the dispersions / brine (a) to (f) was initially charged and mixed with potassium hydroxide solution according to 3.3.
- the stirrer was turned on and stirred until the mixture was homogeneous. While stirring, the heating module was heated to about 50-55 ° C. When reaching 50 ° C, the mixture was held for 45 min with stirring at a temperature of 50-55 ° C until the
- the heat protection casting compound was filled into the storage container of the application nozzle.
- the PET film to be coated was observed in accordance with the web guidance Abroll uncomfortable-> coating table-> drying oven ->. Retractor clamped.
- the coating thickness was adjusted by adjusting the gap between the film and the application nozzle to a gap of 1 mm.
- the setting was made with a feeler gauge on the right and left outside of the film.
- the dosing pump volume was adjusted as a function of the web speed.
- the web speed was set to 0.1 m / s, because at too high a speed, coating defects were found in the form of thinner application or breakage of the wet film.
- the coating process was initiated by starting the retractor and the metering pump.
- the hardening of the layer took place in a drying tunnel with moist protective gas (nitrogen) under flooding at a slight overpressure of about 10 Pa.
- the temperature was 80 ° C.
- the hybrid film was tested for transparency.
- the heat protection casting material was as in Example 1 Chap. 1 to 4 prepared
- the heat protective casting material was filled in the reservoir of the application nozzle.
- the PET film to be coated was clamped in accordance with the web guide unwinding device -> coating table -> laminating roller -> drying oven -> retractor and the cover sheet was clamped under consideration of the web guide unwinding -> laminating roller -> drying oven -> retractor.
- a hotmelt dispenser was used to apply an edge seal, which applies the hotmelt to the edge of the carrier film which is not coated with intumescent layer immediately prior to the application of the cover film.
- the adjustment of the hotmelt dosing device took place analogous to the setting of the coating thickness (see below).
- the coating thickness was adjusted by adjusting the gap between the film and the application nozzle to a gap of 1 mm.
- the setting was made with a feeler gauge on the right and left outside of the film.
- the dosing pump volume was adjusted as a function of the web speed.
- the web speed was set to 0.1 m / s, because at too high speed coating defects were found in the form of thinner application or tearing of the wet film.
- the coating process was initiated by starting the retractor and the metering pump.
- the hardening of the intumescent layer was carried out in a drying tunnel with protective gas (nitrogen) under flooding at a slight overpressure of about 10 Pa, although protective atmosphere is not necessary in this embodiment.
- the temperature was 80 ° C.
- the hybrid film was tested for transparency and imperviousness of the edges.
- the rolled-up, hybrid film was stretched in a unwinding device and this unwinding device was then clamped in a laminating unit so that the film came down, the intumescent layer lay upwards. Then, a cleaned glass plate was laid flat on the intumescent layer and pressed the glass plate with a laminating to the intumescent layer. Subsequently, the film was cut off at the beginning and at the end of the glass element. The glass plate bonded to the hybrid film was removed and placed flat with the glass side down on another laminating unit. The PET film was peeled off and a clean or likewise provided with an intumescent layer glass plate (with optionally peeled PET film) placed on the intumescent layer. The upper glass plate was pressed with the laminating roller to the lower glass element coated with heat protection material.
- the lamination process described above can be repeated depending on the desired thickness of the disc or the intumescent layer. After reaching the desired thickness, open edges of the glass sheet were sealed by means of adhesive tape or polymeric sealant.
- Table 4 shows the results of fire tests which have been carried out according to the standards EN 1363/1364. Table 4:
- Non-tempered float glass or laminated safety glass can be used instead of ESG, depending on the static requirements.
- the film thickness refers to the thickness of the intumescent layer in the glass composite, i. after removal of the carrier film used of 500 ⁇ .
- the fire classes were determined according to EN 1363/1364
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CH11012010 | 2010-07-05 | ||
PCT/CH2011/000153 WO2012003593A1 (de) | 2010-07-05 | 2011-06-24 | Hitzeschutzmittel in folienform |
Publications (1)
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EP2590817A1 true EP2590817A1 (de) | 2013-05-15 |
Family
ID=44318479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11731240.5A Withdrawn EP2590817A1 (de) | 2010-07-05 | 2011-06-24 | Hitzeschutzmittel in folienform |
Country Status (3)
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EP (1) | EP2590817A1 (de) |
TW (1) | TW201210811A (de) |
WO (1) | WO2012003593A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017108976B4 (de) * | 2017-04-26 | 2020-01-16 | Martin Elze | Brandschutzmaterial zum Umhüllen eines Kabels oder einer Leitung und/oder zum Ausbilden eines Formteils mit wenigstens einer gekrümmten Oberfläche, Verfahren zum Herstellen desselben, ein damit hergestelltes Brandschutzmaterial und eine Verwendung eines Primers in einem Brandschutzmaterial |
AT523824B1 (de) | 2020-06-10 | 2021-12-15 | Eine Illarion | Brandschutzsystem |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH110110A (de) | 1923-05-07 | 1925-05-16 | Farbenfab Vorm Bayer F & Co | Verfahren zur Darstellung eines Azofarbstoffes. |
US5565273A (en) | 1992-08-11 | 1996-10-15 | Vetrotech Ag | Transparent heat protection element |
DE19720269A1 (de) | 1997-05-14 | 1998-11-19 | Inst Neue Mat Gemein Gmbh | Nanokomposit für thermische Isolierzwecke |
EP1431027A1 (de) | 2002-12-18 | 2004-06-23 | Scheuten Glasgroep | Brandschutzmittel und Verfahren zu seiner Herstellung |
WO2004082933A1 (en) * | 2003-03-19 | 2004-09-30 | Pilkington Plc | Fire resistant glazings |
GB0514753D0 (en) * | 2005-07-19 | 2005-08-24 | Pilkington Plc | Fire resistant glazings |
GB0514749D0 (en) * | 2005-07-19 | 2005-08-24 | Pilkington Plc | Fire resistant glazings |
WO2007118887A1 (fr) * | 2006-04-19 | 2007-10-25 | Agc Flat Glass Europe Sa | Vitrage anti-feu |
GB0700518D0 (en) * | 2007-01-11 | 2007-02-21 | Pilkington Deutschland Ag | Laminated glazing |
WO2009155714A1 (de) * | 2008-06-26 | 2009-12-30 | Gevartis Ag | Materialien zur herstellung lichtdurchlässiger hitzeschutzelemente und mit solchen materialien hergestellte lichtschutzelemente sowie verfahren zu deren herstellung |
-
2011
- 2011-06-24 EP EP11731240.5A patent/EP2590817A1/de not_active Withdrawn
- 2011-06-24 WO PCT/CH2011/000153 patent/WO2012003593A1/de active Application Filing
- 2011-06-29 TW TW100122820A patent/TW201210811A/zh unknown
Non-Patent Citations (1)
Title |
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See references of WO2012003593A1 * |
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TW201210811A (en) | 2012-03-16 |
WO2012003593A1 (de) | 2012-01-12 |
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