FIRE RESISTANT ELEMENT

Abstract

The fire resistant interlayer for use in a fire resistant element is suitable for use in a fire resistant element. The fire resistant interlayer is arrangeable between two support elements. The fire resistant interlayer is a silicon based polymer, wherein the polymer is polymerised from starting component comprising silicon. In particular the polymer is polymerised from a dispersion of SiO2 nanoparticles, and/or silicic acid, a silane compound; in particular halogenated silane, in particular chlorinated silane and/or fluorinated silane; a silanol compound, a siloxane compound a derivate thereof and/or a mixture thereof dissolved, dispersed and/or emulsified a solvent.

Claims

1. A fire resistant interlayer for use in a fire resistant element, wherein the fire resistant interlayer is arrangeable between at least two support elements, wherein the fire resistant interlayer is a silicon based polymer gel, said silicon based polymer gel is polymerised from a starting component comprising a dispersion of SiO2 nanoparticles, and/or silicic acid, a silane compound; a silanol compound, a siloxane compound, a derivate thereof and/or a mixture thereof.

2. The fire resistant interlayer according to claim 1, wherein the silicon based polymer gel is a silicon based hydrogel, wherein the silicon based hydrogel is polymerised from an aqueous dispersion, emulsion and/or solution of the starting component, wherein the aqueous dispersion is of SiO2 nanoparticles, silicic acid, a silane compound; in particular a halogenated silane; a silanol compound, siloxane compound, a derivative thereof and/or a mixture thereof dissolved, dispersed and/or emulsified in water.

3. The fire resistant interlayer according to claim 1, wherein the starting component is the dispersion of SiO2 nanoparticles, wherein the SiO2 nanoparticles (3) are capable to perform an autopolymerisation resulting in the polymerised polymer gel interlayer.

4. The fire resistant interlayer according to claim 1, wherein the starting component is the dispersion of SiO2 nanoparticles, wherein the SiO2 nanoparticles are stabilised in a cationic manner, and wherein a destabilising agent is present for polymerisation of the SiO2 nanoparticles, the destabilising agent being an anionic agent.

5. The fire resistant interlayer according to claim 1, wherein the starting component is the dispersion of SiO2 nanoparticles, wherein the SiO2 nanoparticles have a particle size of less or equal to 25 nm.

6. The fire resistant interlayer according to claim 1, wherein the pH of the polymerised silicon based polymer gel interlayer is less or equal to 6.

7. The fire resistant interlayer according to claim 1, wherein the silicon based polymer gel is essentially dimensionally stable.

8. The fire resistant interlayer according to claim 1, wherein the silicon based polymer gel is a poly-silicic-acid based polymer gel.

9. A fire resistant element comprising at least two support elements and a transparent fire resistant interlayer according to claim 1, wherein the two support elements are arranged essentially parallel to each other and wherein the fire resistant interlayer is arranged between the support elements.

10. The fire resistant element according to claim 9, wherein at least one support element comprises a primer layer on a flat side facing the fire resistant interlayer.

11. A method for manufacturing a fire resistant element, comprising the steps of: providing at least one first support element and at least one edge limitation, said edge limitation is arranged peripheral along the edge of the first support element, so that the first support element and the edge limitation form a receptacle; providing a starting component comprising a dispersion of SiO2 nanoparticles (3), and/or silicic acid, a silane compound; a silanol compound, a siloxane compound, a derivate thereof and/or a mixture thereof, filling the starting component into the receptacle; polymerising the starting component to form a silicon based polymer gel as a fire resistant interlayer.

12. The method according to claim 11, wherein the first support element together with at least one second support element is provided, said second support element is spaced from the first support element, wherein the edge limitation is an edge sealing between the first and the second support element and said edge limitation is arranged peripheral along their edge, and the starting component is filled into a space before a polymerisation, said space is formed between the first and the second support element and forms the receptacle.

13. The method according to claim 11, wherein the SiO2-nanoparticles have a particle size of less or equal to 25 nm.

14. The method according to claim 11, wherein in an additional step, a primer is deposited onto at least one support element on a side facing the fire-protection layer before the supporting element is brought into contact with the starting component.

15. A method for manufacturing a fire resistant interlayer, comprising the steps of providing a starting component comprising a dispersion of SiO2 nanoparticles, and/or silicic acid, a silane compound; a silanol compound, a siloxane compound, a derivate thereof and/or a mixture thereof dissolved, dispersed and/or emulsified in a solvent, wherein the dispersion of SiO2 nanoparticles comprises SiO2 nanoparticles having a particle size of less or equal to 25 nm; polymerising the starting component as silicon based polymer gel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0081] The subject matter of the invention will be explained in more detail in the following text with reference to exemplary embodiments, which are illustrated in the attached drawings, in which schematically shows:

[0082] FIG. 1a and FIG. 1b different assemblies of a fire resistant element.

DETAILED DESCRIPTION OF THE INVENTION

[0083] In principle, identical parts are provided with the same reference symbols in the figures.

[0084] While the invention will be described as it relates to the present preferred embodiments of the invention, it is distinctly understood that the invention is not limited thereto, but may be otherwise variously embodied and practised within the scope of the claims.

[0085] FIGS. 1a and 1b, schematically show the structure of a fire resistant element 5, which includes a fire resistant interlayer 1 based on a silicon based polymer 10, in particular a silicon based hydrogel. The figures show: [0086] FIG. 1a: A fire resistant element 5 with two support elements 2.1, 2.2 with a fire resistant interlayer 1 arranged there between with an edge limitation 6 respectively an edge sealing. The fire resistant element 5 can be manufactured, for example, by way of curing the educts of the fire resistant interlayer 1 that are first filled in fluid form into the intermediate space/receptacle defined with the help of the edge limitation 6 (edge sealing), between the support elements 2.1, 2.2, and are cured there. The support elements 2.1, 2.2 include a primer 7 at the flat side that faces the fire resistant interlayer 1. The primer can alternatively also be deposited only onto one of the two support elements 2. [0087] FIG. 1b: A fire resistant element 5 with three support elements 2.1, 2.2, 2.3 with fire resistant interlayers 1.1, 1.2 arranged in between the support elements, and each with an edge limitation 6.1, 6.2. A fire resistant element 5 with more than three support elements 2.1, 2.2, 2.3 and more than two fire resistant interlayers 1.1, 1.2 is also possible.

[0088] A few examples for the manufacture of a fire resistant element 5 respectively the fire resistant interlayer are specified hereinafter in Table 1.

TABLE-US-00001 TABLE 1 Composition of the educts of the polymerised, silicon based polymer. Probe A [%].sup.a B [%].sup.b C [%].sup.c D [%] 1 61.9 12.4 0.9 24.8.sup.d1 2 62.0 12.4 0.8 24.8.sup.d2 3 70.4 28.2 1.4 0 4 70.9 28.4 0.7 0 5 99.0 0 1.0 0 .sup.astarting component containing silicon, w[silicon containing starting component] = 30%; .sup.bwater; .sup.cHCl (37%); .sup.d1saturated boric acid solution; .sup.d2saturated solution of borax.

[0089] Table 1 shows the composition of the educts, the compositions are polymerised as the silicon based polymer. The share of the several educts A-D is given in percent by weight (% respectively wt %). Component A is a starting component containing silicon with 30 wt % starting component containing silicon, educt B is water (H2O respectively H.sub.2O), educt C is 37% hydrochloric acid and D is an additive, being for example d1 saturated boric acid solution or d2 saturated solution of borax. The component A can be dissolved, emulsified and/or dispersed in a solvent respectively carried by a vehicle. The component A can be a SiO2 nanoparticle dispersion with 30 wt % SiO2. The component A can be a solution, emulsion and/or dispersion of silicic acid, a silane compound; in particular halogenated silane, in particular chlorinated silane and/or fluorinated silane; a silanol compound, a siloxane compound a derivate thereof and/or a mixture thereof, wherein the content of the silicon including component is 30 wt %. The content of the silicon including starting component can be varied. Furthermore, the composition of the educts of the polymerised, silicon based polymer can be varied.

[0090] Other additives as for example sodium chloride, magnesium chloride, boron compounds, stannates, aluminium hydroxide compounds, magnesium hydroxide compounds etc. can also be used.

[0091] Furthermore, other solvents respectively dispersion/emulsion media, and/or vehicles can be used, such as alcohols, polyols, organic solvents etc.

[0092] The silicon based polymer gel can be polymerised, respectively cured, at different temperatures.

[0093] The silicon based polymer gel includes the silicon based polymer entrapping/enclosing the solvent respectively vehicle carrying the starting component.