DE102018102007A1 - Fire protection molding for covering a cable or a pipe or a structural part of a building - Google Patents

Abstract

The invention relates to a fire protection molding (F) for wrapping a cable, a conduit or a structural part of a building, wherein the fire protection molding (F) in the cross-sectional view has the shape of a polygon (P). The polygon (P) has inwardly facing corners (EI) and outwardly facing corners (EA), wherein the number of inwardly facing corners (EI) is a natural number ≥ 2, and the number of outwardly facing corners (EA ) is a natural number ≥ 3. Here, the number of outwardly facing corners (EA) is greater than or equal to the number of inwardly facing corners (EI). The fire protection molding (F) has a fire protection material (B) or consists of a fire protection material (B).

Description

Technical field of the invention

The present invention relates to a fire protection molding for wrapping a cable or a conduit or a plurality thereof or a structural part of a building or a technical system, in particular a system-based built-in component according to claim 1, and the use of a polygon as a shape for a cross section of a fire protection molding according to claim 11th

In the context of the present invention, a fire protection material is understood to mean a material which is suitable for protecting a single-layered (or multi-layered) and completely wound object, such as a cable, a conduit or a construction part of a building, in such a way that, after a 90 or preferably 120 minutes of flame or heat from outside at a temperature of about 1100 ° C, the temperature within the space surrounded by the fire protection material to at most 180 ° C, preferably at most 120 ° C, preferably at most 100 ° C, in particular at most 90 ° C. , rises. This allows the conditions of DIN standards DIN 4102 Part 11 and / or DIN 4102 Part 21 and / or compliant with UL 1709 / ASTM and / or according to IEC 60331-21 fire protection material according to the invention. In this case, the fire protection material according to the invention meets the standards mentioned even if the object to be protected with the fire protection material according to the invention is moved or arranged freely in the room and not in a wall or ceiling, so that the object to be protected without fire protection measures, such as wrapping in the invention Fire protection material, in case of fire would be exposed directly to a flame.

The same as explained above for the fire protection material according to the invention also applies to the fire protection molding according to the invention, which is a spatially configured body, in particular a hollow body, which has the fire protection material as defined above or consists of such a fire protection material.

State of the art

Known fire protection materials and in particular fire protection moldings usually have rectangular cross-sectional shapes, e.g. Cable channels, on. These consist for example of metal sheets as a base or support material, which are coated or lined with an Intumiszensmaterial or rock wool plates or calcium silicate plates. The Intumiszensmaterial (fire protection component) inflates when exposed to heat, whereby a fire protection effect of the protected material is protected with the fire protection material.

The conventional fire protection materials and in particular conventional fire protection moldings have the disadvantage that, for a given maximum layer thickness of the fire protection material or of the fire protection molding produced therewith, the amount of coating material which supports the fire protection effect is limited depending on the outer circumferential or circumferential surface of the fire protection molding ,

On the other hand, the predetermined maximum layer thickness of the fire protection material can not be increased arbitrarily, for example, to apply more coating material, since the used fire protection material or this having fire protection molding is otherwise too bulky. As a result, it would take too much space during installation and / or it would not or only with difficulty be able to be integrated into existing spatial conditions.

Furthermore, there is in the known from the prior art fire protection moldings the disadvantage that these in the structural design for the protection of, for example, cables or lines over several meters through a room just in the usually provided for a fire protection material support materials on a too low stiffness and too high Weight and must be carried with suitable substructures. This is because the layer thickness of the carrier material can not be chosen arbitrarily large, otherwise a formation of fire protection moldings, which have bulges and bends, can no longer be ensured. Due to instability the fire protection effect may be impaired.

If the described fire protection materials used to protect, for example, power cables or lines, there is also the risk that when wrapping the cables or lines with Forming the fire protection materials or otherwise bending the fire protection materials cracks in the surface. This may eventually cause moisture to enter the coating from the outside and wash out the intumescent material that expands upon exposure to heat or otherwise be adversely affected by the action of moisture. Consequently, this fire protection material tends to lose its fire protection properties due to weather conditions.

Object of the invention

Object of the present invention is therefore to provide an improved fire protection molding. In this case, the fire protection molding for the protection of cables, pipes or structural parts of a building is suitable, even if they are laid or arranged freely in the room and not in walls or ceilings. Preferably, the fire protection molding should be made compact and space-saving and in case of fire an increased fire protection effect, in particular an improved ratio of provided mass of fire-protective coating material to the initial volume of the fire protection molding. In the further preferred embodiment, the fire protection molded part is to be sufficiently bendable for the formation of narrow bends, and yet have sufficient mechanical rigidity. At the same time a sufficient fire protection effect is sought, which should be maintained despite aging to a sufficient extent.

Description of the invention

The object is achieved by the fire protection molding according to claim 1. In this case, a fire protection molding for wrapping a cable, a line or a structural part of a building, such as a pillar or support, claimed. In this case, the fire protection molding preferably has the shape of an elongated hollow body. The fire protection molding has in the cross-sectional view of the shape of a polygon, preferably a star, in particular an equilateral star on. The polygon has inwardly facing corners and outwardly facing corners, the number of inwardly facing corners being a natural number ≥ (greater than or equal to) 2, preferably between 2 and 64, preferably between 2 and 32, in particular between 5 and 16 , is; and wherein the number of outwardly facing corners is a natural number ≥ (greater than or equal to) 3, preferably between 3 and 64, preferably between 3 and 32, in particular between 5 and 16. The number of outward facing corners is greater than or equal to the number of inward facing corners. The fire protection molding has a fire protection material or consists of a fire protection material.

By means of the fire protection molding according to the invention can be, in particular if this is in a tubular shape, easily accomplish a montage friendly fire protection of cables or pipes. The previous box-shaped fire protection channels can be advantageously replaced by the fire protection molding according to the invention, wherein the fire protection molding according to the invention also has a smaller footprint compared to the conventional fire protection channels due to its flexibility.

By having the shape of a polygon in the cross-sectional view of the fire protection molding according to the invention, on the one hand a compact, space-saving design of the fire protection molding is realized. On the other hand, the rigidity and mechanical stability of the fire protection molded article due to the polygon shape of the cross section of the fire protection molding with inwardly and outwardly facing corners ("zigzag" shape) compared to a conventional circular or rectangular cross-sectional shape is significantly improved. In a Faltenbalgausführung the fire protection molding according to the invention, in which the kinked edges are arranged transversely to the longitudinal axis, thus even a form-fitting route protection is possible.

In addition, this polygon shape offers the possibility that the heat-inflating fire protection material, which comprises the fire protection molding or from which it consists, inflates to a circular or circular cross-sectional shape, with the "zigzag" contour to a more or less straight , which smoothes circular shape approximating line. As a result, the radius of the fire protection molding rises in case of fire or strong heat (and only in case of fire or strong heat) and the fire protection increases in terms of improved insulation of the enclosed with the fire protection article against the effects of heat from the outside. The radius of the fire protection molding after inflation against the original polygon structure is considerably increased. This again increases the distance of the object to be protected in the interior of the fire protection molding to the hot environment.

Furthermore, the "zigzag" contour has the advantage that the length of the circumference of the "zigzag" contour is increased over the circumference of a circle, even if the circle had the same radius as the circumference of the polygon. In other words, the circumferential area of the "zigzag" contour is considerably increased compared to that of a simple circle because the "zigzag" contour can inflate to the shape of a larger circle in case of fire, much like a bellows of an accordion when mounted. Thus, the available surface for receiving a self-inflating fire protection material surface on the inside and on the outside of the fire protection molding is significantly increased. If the fire protection molding according to the invention can be coated with a total of more fire protection material, this can increase the fire protection effect due to the design. Furthermore, by means of the "zig-zag" contour a better dissipation of the temperature of the flame acting on the fire protection molding from the outside flames can be achieved.

Thus, for example, in the case of a conventional fire hose with a substantially circular cross section during a fire, the flame impinging on the fire hose is divided and flows around the fire hose similar to air a wing during an aircraft flight. In this case, the two partial flows of the flame meet on the opposite, the flame-facing side of the flow around the fire hose together again, similar to the partial flows of air behind the wing. Due to the occurring in this area association of the flames, the temperature at the adjacent thereto part of the surface of the fire hose is particularly high.

In contrast, in the fire protection molding according to the invention, the presence of the "zigzag" contour, as described above, on the one hand causes an extension of the flow path of the flame (or of the flame "partial streams") around the fire protection molding. As a result, the two flame "partial streams" when meeting on the back of the fire protection molding in comparison to the conventional fire hose with circular cross-section in their intensity (temperature and flow velocity) are attenuated. On the other hand, the presence of the "zigzag" contour causes a stronger turbulence of the respective flame "partial flow" when flowing around the fire protection molding. As a result, the respective partial flow is additionally attenuated because of increased scattering or spreading, with the temperature of the flame dropping further, in particular on the rear side of the fire protection molded part. Consequently, the fire protection effect over conventionally used cross-sectional shapes without "zigzag" contour is increased by the shape of the fire protection molding according to the invention.

The fire protection molding according to the invention is flexible, bendable and / or shapeable or engageable in a shape which is tubular or substantially tubular. The fire protection molding according to the invention can also be easily mounted and has a lower intrinsic mass compared to the conventional fire protection channels, which has advantages in the mechanical stability under heat.

The fire protection molding according to the invention can, preferably in tubular form, in the laying of cables or pipelines (new installation) are used for wrapping the same. But it can also be used for the subsequent protection of existing cables, pipes or cable ducts or the like. Due to their space requirements or installation restrictions, this option was usually not available with the previously used fire protection ducts. In this case, the material to be protected can be wrapped overlapping in the assembled state with a flat portion of the fire protection molding. Ideally, the overlap, also called rollover, is at least 10 cm to ensure proper fire protection. In the overlapping arrangement of the fire protective molding in the region of the overlap, when the inwardly facing corner of the outer layer is placed on the inward facing corner of the inner layer and accordingly the outwardly facing corner of the outer layer is disposed on the outwardly facing corner of the inner layer is the "zigzag" shape contributes in case of fire or force from the outside similar to a tilting of moldings or a positive connection to further mechanical stabilization of the fire protection molding. The fire protection molding can then preferably mechanically, for example. By means of a galvanized binding wire or clamps are attached. Thus, the star-shaped configuration of the contour of the fire protection molding according to the invention provides a simple, but well-secured closure of the construction.

Another advantage of the fire protection molding according to the invention is that due to the above-described "zigzag" shape of the contour of the fire protection molding enveloped with the fire protection molding subject without further structural aids such as holding devices or the like, forcibly in all directions in a predetermined minimum distance from the environment of the fire protection molding is held. In contrast, the cable to be protected in a conventional fire protection channel seen in cross-section due to gravity on the lowest point of the fire protection channel. Thus, the cable to be protected separates only the thickness of the fire protection channel from the environment. On the other hand For example, the distance of the cable to be protected from the environment is the thickness of the fire hose plus the difference of the radii of incircle on which the inward-facing corners are located and the perimeter on which the outward-facing corners are located. Depending on the selected geometry, this difference can amount to a multiple of the thickness of the fire protection molding.

If the number of inwardly facing corners is 3 or greater, the mechanical stability of the fire protection molding according to the invention is particularly great.

Advantageous embodiments of the fire protection molding according to the invention are the subject of the dependent claims.

Thus, the polygon may have at least one inscribed circle and at least one circumference. The inwardly facing corners are arranged on the inscribed circle or on a plurality of inner circles. Further, the outwardly facing corners are disposed on the circumference or on a plurality of orbits.

If the polygon in the above-explained sense has a shape with a single circle and a circle, the height of the ridge, that is, the amount of the difference between the radii of the circle and the circle, is the same for all corners. As a result, the assembly of the fire protection molding is facilitated in particular when providing a flashover or an overlap.

The amount of the difference of the radii of incircle and perimeter, ie the comb height, is preferably between 5 and 50 mm, preferably between 8 and 25 mm, in particular between 10 and 20 mm. If a small comb height is selected, a particularly homogeneous temperature distribution on the surface of the fire protection molding is advantageously achieved in the event of a fire. If, on the other hand, a large comb height is selected, in particular above the preferred range given above, a rather inhomogeneous temperature distribution on the surface of the fire protection molding with elevated temperatures in the region of the corners is achieved in the event of fire.

If the polygon in the above-explained sense has a shape with a plurality of inner circles and / or orbits, the design width for the fire protection molding according to the invention is considerably expanded.

Further, the amount of the difference of the radius of the outermost circumference and the radius of the innermost inscribed circle, i.e., the maximum crest height, may be between 5 and 50 mm, preferably between 8 and 25 mm, in particular between 10 and 20 mm.

According to the inventor's knowledge, setting the difference amount as defined above allows to set the distance of the object to be protected and the environment. As a result, the fire protection properties, in particular the fire resistance duration or the insulating effect of the fire protection molding according to the invention can be adjusted as needed.

The amount of difference in the radius of the outermost perimeter and the radius of the innermost inscribed circle, that is, the maximum crest height, may be between 5 and 25 mm, preferably between 10 and 20 mm. If the maximum height of the ridge is less than 5 mm, the contour of the fire protection part is somewhat too shallow, so that a sufficient amount of fire protection material or coating material may not be applied. If the maximum comb height exceeds 25 mm, the risk of tearing of the substrate at the edge (outwardly facing corner in the cross-sectional view) is increased. Particularly preferred is the range of 10 to 20 mm, in particular 15 mm, since in this case a sufficiently large area for receiving the fire protection material or coating material is given and at the same time a high mechanical stability is ensured.

Additionally or alternatively, the radius of the outermost circumference between 9 and 200 mm, preferably 15 to 150 mm, amount.

Additionally or alternatively, the radius of the innermost inscribed circle may be between 5 and 100 mm, more preferably between 10 and 60 mm, in particular between 10 and 50 mm.

With the setting of the radius of the outermost circumference and / or the radius of the innermost inscribed circle on the specified areas, it is possible, the outer peripheral surface of the invention To set fire protection molding targeted. Thus, when setting the outer peripheral surface, for example, be taken into account which peripheral surface is necessary, for example, to apply the required to achieve a given fire protection mass of fire protection coating material on the fire protection molding, without exceeding a maximum thickness of the fire protection molding.

Furthermore, the fire protection material may comprise a carrier material. This contains the carrier material a fibrous silicate, preferably a calcium silicate and / or a silicon silicate, or the carrier material consists of one of these or any mixture thereof.

Additionally or alternatively, the carrier material may have an average layer thickness in the range of 0.5 to 4 mm, preferably 1.5 to 2 mm. In this case, it is preferably possible for the layer thickness at any point of the carrier material to deviate from the mean layer thickness of the carrier material (T) by at most 20%, preferably by at most 10%, in particular by at most 5%.

Additionally or alternatively, the carrier material may be formed as a braided yarn, a woven fabric, a braided braid or a lattice structure.

Fibersilikat is a high temperature resistant material, which is characterized in particular as a wickerwork or yarn by a low density and thus a low mass-related load of the protected good. Alternatively, the use of a basalt tissue as the carrier material is conceivable.

If the average layer thickness of the substrate exceeds the value of 4 mm, the fire protection molding becomes too stiff and can no longer be wrapped around the object to be protected. If the average layer thickness of the carrier material falls below the value of 0.5 mm, the insulating effect of the carrier material and / or the mechanical stability is / are possibly insufficient.

The fire protection material may comprise a first coating material, wherein the first coating material is applied to the carrier material or contained in the carrier material.

The first coating material may be applied on one or both sides of the carrier material, wherein a one-sided application is preferred. The first coating material may be applied to the inner and / or outer peripheral surface or lateral surface of the fire protection molding, preferably on the inner circumferential surface of the fire protection molding.

• Xylol (CAS-Nr. 1330-20-7), vorzugsweise in einem Massenanteil von 12,5 bis 20 %;
• Kohlenwasserstoffe, C9, Aromate (CAS-Nr. 64742-95-6), vorzugsweise in einem Massenanteil von 5 bis 12,5 %;
• Reaktionsprodukt: Bisphenol-A-Epichlorhydrinharze mit durchschnittlichem Molekulargewicht 700 bis 1100 (CAS-Nr. 25068-38-6), vorzugsweise in einem Massenanteil von 5 bis 12,5 %;
• Butan-1-ol (CAS-Nr. 71-36-3), vorzugsweise in einem Massenanteil von 5 bis 10 %;
• Trizinkbis(orthophosphat) (CAS-Nr. 7779-90-0), vorzugsweise in einem Massenanteil von 5 bis 12,5 %;
• Ethylbenzol (CAS-Nr. 100-41-4), vorzugsweise in einem Massenanteil von 1 bis 5 %;
• 4-Hydroxy-4-methyl-pentan-2-on (CAS-Nr. 123-42-2), vorzugsweise in einem Massenanteil von 1 bis 5 %;
• Lösungsmittelnaphtha (Erdöl), leicht aromatisiert (CAS-Nr. 64742-95-6), vorzugsweise in einem Massenanteil von 0,1 bis 0,25 %; und Siliciumdioxid (CAS-Nr. 7631-86-9), vorzugsweise in einem Massenanteil von 1 bis 5 %.

The fire protection material may further comprise a primer, wherein the primer preferably contains or consists of a primer, a hardener and a thinner. The primer contains:

• Xylene (CAS No. 1330-20-7), preferably in a mass fraction of 12.5 to 20%;
• Hydrocarbons, C9, aromatics (CAS No. 64742-95-6), preferably in a proportion by mass of 5 to 12.5%;
• Reaction product: bisphenol A-epichlorohydrin resins of average molecular weight 700 to 1100 (CAS No. 25068-38-6), preferably in a mass fraction of 5 to 12.5%;
• Butan-1-ol (CAS No. 71-36-3), preferably in a mass fraction of 5 to 10%;
• Trizinc bis (orthophosphate) (CAS No. 7779-90-0), preferably in a mass fraction of 5 to 12.5%;
• Ethylbenzene (CAS No. 100-41-4), preferably in a mass fraction of 1 to 5%;
• 4-hydroxy-4-methylpentan-2-one (CAS No. 123-42-2), preferably in a mass fraction of 1 to 5%;
• Solvent naphtha (petroleum), lightly flavored (CAS No. 64742-95-6), preferably in a proportion by mass of 0.1 to 0.25%; and silica (CAS No. 7631-86-9), preferably in a mass fraction of 1 to 5%.

• Hexamethylen-1,6-diisocyanat, Homopolymer (CAS-Nr. 28182-81-2), vorzugsweise in einem Massenanteil von wenigstens 40 %;
• Kohlenwasserstoffe, C9, Aromate (CAS-Nr. 64742-95-6), vorzugsweise in einem Massenanteil von 25 bis 40 %;
• Hexamethylen-1,6-diisocyanat (CAS-Nr. 822-06-0), vorzugsweise in einem Massenanteil von 0,25 bis 0,5 %;
• Dimethylbis[(1-oxoneodecyl)oxy]stannan (CAS-Nr. 68928-76-7), vorzugsweise in einem Massenanteil von 0,1 bis 0,25 %; und
• n-Butylacetat (CAS-Nr. 123-86-4), vorzugsweise in einem Massenanteil von 1 bis 5 %.

The hardener contains:

• Hexamethylene-1,6-diisocyanate, homopolymer (CAS No. 28182-81-2), preferably in a proportion by mass of at least 40%;
• Hydrocarbons, C9, aromatics (CAS No. 64742-95-6), preferably in a mass fraction of 25 to 40%;
• Hexamethylene-1,6-diisocyanate (CAS No. 822-06-0), preferably in a proportion by mass of 0.25 to 0.5%;
• Dimethylbis [(1-oxoneodecyl) oxy] stannane (CAS No. 68928-76-7), preferably in a proportion by mass of 0.1 to 0.25%; and
• n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 1 to 5%.

• Xylol (CAS-Nr. 1330-20-7), vorzugsweise in einem Massenanteil von wenigstens 40 %;
• Butan-1-ol (CAS-Nr. 71-36-3), vorzugsweise in einem Massenanteil von 20 bis 25 %;
• Ethylbenzol (CAS-Nr. 100-41-4), vorzugsweise in einem Massenanteil von 12,5 bis 20 %; und
• n-Butylacetat (CAS-Nr. 123-86-4), vorzugsweise in einem Massenanteil von 20 bis 25 %.

The thinner contains:

• Xylene (CAS No. 1330-20-7), preferably in a proportion by mass of at least 40%;
• Butan-1-ol (CAS No. 71-36-3), preferably in a mass fraction of 20 to 25%;
• Ethylbenzene (CAS No. 100-41-4), preferably in a mass fraction of 12.5 to 20%; and
• n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 20 to 25%.

The respective mass fraction of the constituents of the primer, the hardener and the diluent preferably relate to the mass of the primer. The mass ratio of the primer to the hardener is preferably 4 to 6, preferably 5, to 1.

The inventor has surprisingly found that good adhesion of the first coating material to the carrier material is achieved by the presence of a primer.

Furthermore, it has been observed that even after the application of the primer to the first coating material which is already on the carrier material, a good adhesion of the first coating material to the carrier material can be achieved. This is probably due to the fact that the primer diffuses from the outside through the first coating material and unfolds its adhesion between the first coating material and the carrier material.

The first coating material inflates when exposed to heat or foams and unfolds in this way a heat protection effect. An impairment of the heat protection effect of the first coating material by the primer does not take place. Surprisingly, the primer with the composition according to the invention causes no or no relevant chemical change of the first coating material. Thus, in contrast to other primers, the primer according to the invention causes no or no appreciable increase in the rigidity of the first coating material, which would make it more difficult to bend the fire protection material.

In addition, the presence of the primer avoids the formation of cracks in the first coating material or significantly reduces the formation of cracks when the fire protection material is bent or curved into the fire protection molding of the present invention, i.e., a polygonal casing for cables. As a result, penetration of moisture with the mentioned negative consequences is avoided or at least reduced. Consequently, the fire protection molding retains its fire protection properties when used as a sheathing of a cable or a pipe even under the influence of moisture. Thus, the fire protection molding according to the invention is weather-resistant when used outdoors and insensitive to e.g. Extinguishing material, such as water from a sprinkler system.

• Triphenylphosphat (CAS-Nr. 115-86-6), vorzugsweise in einem Massenanteil von < 1 %;
• Nonylphenolethoxylat (CAS-Nr. 9016-45-9), vorzugsweise in einem Massenanteil von < 1 %;
• Ammoniumhydroxid (CAS-Nr. 1336-21-6), vorzugsweise in einem Massenanteil von < 1 %;
• Pyrithionzink (CAS-Nr. 13463-41-7), vorzugsweise in einem Massenanteil von 0,1 bis 0,2 %;
• Terbutryn (CAS-Nr. 886-50-0), vorzugsweise in einem Massenanteil von 0,1 bis 0,2 %; und
• Zinkoxid (CAS-Nr. 1314-13-2), vorzugsweise in einem Massenanteil von 0,1 bis 0,2 %;
• wobei sich der jeweilige Massenanteil vorzugsweise auf die Masse des Einkomponentenmaterials (1K) bezieht.

In a further embodiment, the first coating material may contain or consist of a one-component material. The one-component material ( 1K) preferably the following substances:

• Triphenyl phosphate (CAS No. 115-86-6), preferably in a mass fraction of <1%;
• Nonylphenol ethoxylate (CAS No. 9016-45-9), preferably in a mass fraction of <1%;
• Ammonium hydroxide (CAS No. 1336-21-6), preferably in a mass fraction of <1%;
• Pyrithione zinc (CAS No. 13463-41-7), preferably in a proportion by mass of 0.1 to 0.2%;
• Terbutryn (CAS No. 886-50-0), preferably in a proportion by mass of 0.1 to 0.2%; and
• Zinc oxide (CAS No. 1314-13-2), preferably in a proportion by mass of 0.1 to 0.2%;
• wherein the respective mass fraction is preferably based on the mass of the one-component material ( 1K) refers.

In a further embodiment, the fire protection molding may further comprise a second coating material. The second coating material may be applied to the primer or to a mixture of the primer and the first coating material. In this case, the second coating material may contain or consist of a first two-component material, a second two-component material and preferably the thinner.

• Xylol (CAS-Nr. 1330-20-7), vorzugsweise in einem Massenanteil von 1 bis 5%;
• Ethylbenzol (CAS-Nr. 100-41-4), vorzugsweise in einem Massenanteil von 1 bis 5 %;
• leichte, aromatische Lösungsmittelnaphtha (Erdöl) (CAS-Nr. 64742-95-6), vorzugsweise in einem Massenanteil von 0,5 bis 5 %;
• 1,3,3- Trimethyl-N-(2-methylpropyliden)-5-[(2-methylpropy-liden)amino]cyclohexanmetylamin (CAS-Nr. 54914-37-3), vorzugsweise in einem Massenanteil von 0,25 bis 0,5 %;
• Dimethylbis[(1-oxoneodecyl)oxy]stannan (CAS-Nr. 68928-76-7), vorzugsweise in einem Massenanteil von 0,1 bis 0,25 %;
• n-Butylacetat (CAS-Nr. 123-86-4), vorzugsweise in einem Massenanteil von 12,5 bis 15 %;
• 2-Methoxy-1-methylethylacetat (CAS-Nr. 108-65-6), vorzugsweise in einem Massenanteil von 1 bis 5; und
• Ethyl-3-ethoxypropionat (CAS-Nr. 763-69-9), vorzugsweise in einem Massenanteil von 1 bis 5 %.

The first two-component material preferably contains the following substances:

• Xylene (CAS No. 1330-20-7), preferably in a mass fraction of 1 to 5%;
• Ethylbenzene (CAS No. 100-41-4), preferably in a mass fraction of 1 to 5%;
• light, aromatic solvent naphtha (petroleum) (CAS No. 64742-95-6), preferably in a proportion by mass of 0.5 to 5%;
• 1,3,3-Trimethyl-N- (2-methylpropylidene) -5 - [(2-methylpropylidene) amino] cyclohexane-methylamine (CAS No. 54914-37-3), preferably in a proportion by mass of 0.25 to 0.5%;
• Dimethylbis [(1-oxoneodecyl) oxy] stannane (CAS No. 68928-76-7), preferably in a proportion by mass of 0.1 to 0.25%;
• n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 12.5 to 15%;
• 2-methoxy-1-methylethyl acetate (CAS No. 108-65-6), preferably in a mass fraction of 1 to 5; and
• Ethyl 3-ethoxypropionate (CAS No. 763-69-9), preferably in a mass fraction of 1 to 5%.

• Hexamethylen-1,6-diisocyanat Homopolmyer (CAS-Nr. 28182-81-2), vorzugsweise in einem Massenanteil von wenigstens 40 %;
• Aromate, Kohlenwasserstoffe, C9 (CAS-Nr. 64742-95-6), vorzugsweise in einem Massenanteil von 25 bis 40 %;
• Hexamethylen-1,6-diisocyanat (CAS Nr. 822-06-0), vorzugsweise in einem Massenanteil von 0,25 bis 0,5 %;
• Dimethylbis[(1-oxoneodecyl)oxy]stannan (CAS-Nr. 68928-76-7), vorzugsweise in einem Massenanteil von 0,1 bis 0,25 %; und
• n-Butylacetat (CAS-Nr. 123-86-4), vorzugsweise in einem Massenanteil von 1 bis 5 %.

The second bicomponent material preferably contains the following substances:

• Hexamethylene-1,6-diisocyanate homopolmyer (CAS No. 28182-81-2), preferably in a proportion by mass of at least 40%;
• Aromatics, hydrocarbons, C9 (CAS No. 64742-95-6), preferably in a mass fraction of 25 to 40%;
• Hexamethylene-1,6-diisocyanate (CAS No. 822-06-0), preferably in a proportion by mass of 0.25 to 0.5%;
• Dimethylbis [(1-oxoneodecyl) oxy] stannane (CAS No. 68928-76-7), preferably in a proportion by mass of 0.1 to 0.25%; and
• n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 1 to 5%.

The respective mass fraction of the constituents of the first two-component material and of the second two-component material preferably relates to the mass of the second coating material. The thinner preferably accounts for the remaining mass fraction of the second coating material.

The presence of the second coating material has the advantage that the swelling or foaming of the first coating material is accelerated so that the fire protection effect of the first coating material is produced more rapidly. Furthermore, the second coating material advantageously constitutes a protective layer for the first coating material, for example against external mechanical damage.

The inventively proposed primer is also chemically compatible with the second coating material, so that the second coating material is not or not significantly impaired or changed in its chemical properties. Rather, the primer causes an improvement in the adhesion of the second coating material on the first coating material, so that the mechanical stability of the fire protection material is improved overall.

In a preferred embodiment of the fire protection molding, the first coating material may have an average layer thickness in the range of 0.5 to 4 mm, preferably 1.5 to 2 mm. In this case, the layer thickness of the first coating material may differ from the mean layer thickness of the first coating material at any point preferably by at most 20%, preferably by at most 10%, in particular by at most 5%.

If the mean layer thickness of the first coating material is too low, adequate fire protection can not be ensured. If the average layer thickness is too large, the fire protection effect can not be further improved and coating material is wasted. For the first coating material, an average layer thickness in the range of 1.5 to 2 mm is optimal, since hereby a high insulating effect can be achieved with relatively little use of material.

In a preferred embodiment of the fire protection molding, the second coating material may have an average layer thickness in the range of 0.5 to 4 mm, preferably 1.5 to 2 mm. Alternatively, the first coating material and the second coating material together may have an average layer thickness in the range of 1 to 4 mm. In this case, the layer thickness of the second coating material may preferably differ from the average layer thickness of the second coating material at any point by at most 20%, preferably by at most 10%, in particular by at most 5%. Or the layer thickness of the combination of the first coating material and the second coating material at any point by at most 20%, preferably at most 10%, in particular at most 5%, of the average layer thickness of the combination of the first coating material and the second coating material differ.

If the average layer thickness of the second coating material is too low, adequate fire protection can not be ensured. If the average layer thickness is too large, the fire protection effect can not be further improved and coating material is wasted. For the second coating material, an average layer thickness in the range of 1.5 to 2 mm is optimal, since hereby a high insulating effect can be achieved with relatively little use of material.

1. (a) Bereitstellen eines Trägermaterials;
2. (b) Aufbringen eines ersten Beschichtungsmaterials auf das Trägermaterial; wobei das Aufbringen des ersten Beschichtungsmaterials vorzugsweise durch Tauchen, Rollen oder Spritzen erfolgt; und vorzugsweise Abbinden lassen für wenigstens 1 Stunde (1 h), vorzugsweise wenigstens 2 Stunden; und
3. (c) Aufbringen eines Primers auf das in Schritt (b) erhaltene, beschichtete Trägermaterial; und vorzugsweise Abbinden lassen für wenigstens 1 Stunde, vorzugsweise wenigstens 2 Stunden; wodurch das Brandschutzmaterial erhalten wird; und
4. (d) Formen des in Schritt (c) erhaltenen Brandschutzmaterials derart, dass dieses die Gestalt eines länglichen Hohlkörpers aufweist, wobei das Brandschutzmaterial in der Querschnittsansicht die Gestalt eines Polygons, vorzugsweise eines Sterns, insbesondere eines gleichseitigen Sterns, aufweist. Dabei weist das Polygon nach innen weisende Ecken und nach außen weisende Ecken auf, wobei die Anzahl der nach innen weisenden Ecken eine natürliche Zahl ≥ 2, vorzugsweise zwischen 2 und 64, beträgt; wobei die Anzahl der nach außen weisenden Ecken eine natürliche Zahl ≥ 3, vorzugsweise zwischen 3 und 64, beträgt; und wobei die Anzahl der nach außen weisenden Ecken größer oder gleich der Anzahl der nach innen weisenden Ecken ist; wodurch das Brandschutzformteil erhalten wird.

The fire protection molding according to the invention can preferably be produced by the process described below, the process having at least the steps:

1. (a) providing a support material;
2. (b) applying a first coating material to the substrate; wherein the application of the first coating material is preferably carried out by dipping, rolling or spraying; and preferably allowing to set for at least 1 hour (1 h), preferably at least 2 hours; and
3. (c) applying a primer to the coated support material obtained in step (b); and preferably allowing to set for at least 1 hour, preferably at least 2 hours; whereby the fire protection material is obtained; and
4. (d) shaping the fire protection material obtained in step (c) so that it has the shape of an elongate hollow body, wherein the fire protection material in the cross-sectional view has the shape of a polygon, preferably a star, in particular an equilateral star. In this case, the polygon has inwardly facing corners and outwardly facing corners, wherein the number of inwardly facing corners is a natural number ≥ 2, preferably between 2 and 64; wherein the number of outward-facing corners is a natural number ≥ 3, preferably between 3 and 64; and wherein the number of outwardly facing corners is greater than or equal to the number of inwardly facing corners; whereby the fire protection molding is obtained.

The primer is preferably the primer defined in claim 5. The carrier material is preferably the carrier material defined in claim 2. In addition, the first coating material is preferably the first coating material defined in at least one of claims 5, 6 or 8.

The inventive method is characterized by easy handling and high flexibility.

• (e) Aufbringen eines zweiten Beschichtungsmaterials auf das in Schritt (c) erhaltene Brandschutzmaterial; und vorzugsweise Abbinden lassen für wenigstens 1 Stunde, vorzugsweise wenigstens 2 Stunden.

In a further embodiment, the method may further include the step prior to step (d):

• (e) applying a second coating material to the fire protection material obtained in step (c); and preferably allowing to set for at least 1 hour, preferably at least 2 hours.

• (d) Formen des in Schritt (e) erhaltenen Brandschutzmaterials derart, dass dieses die Gestalt eines länglichen Hohlkörpers aufweist, wobei das Brandschutzmaterial in der Querschnittsansicht die Gestalt eines Polygons, vorzugsweise eines Sterns, insbesondere eines gleichseitigen Sterns, aufweist. Dabei weist das Polygon nach innen weisende Ecken und nach außen weisende Ecken auf, wobei die Anzahl der nach innen weisenden Ecken eine natürliche Zahl ≥ 2, vorzugsweise zwischen 2 und 64, beträgt; wobei die Anzahl der nach außen weisenden Ecken eine natürliche Zahl ≥ 3, vorzugsweise zwischen 3 und 64, beträgt; und wobei die Anzahl der nach außen weisenden Ecken größer oder gleich der Anzahl der nach innen weisenden Ecken ist; wodurch das Brandschutzformteil erhalten wird.

If the above-described step (e) is carried out in the method according to the invention, step (d) of the method described above is correspondingly:

• (d) shaping the fire protection material obtained in step (e) such that it has the shape of an elongated hollow body, wherein the fire protection material in the cross-sectional view has the shape of a polygon, preferably a star, in particular an equilateral star. In this case, the polygon has inwardly facing corners and outwardly facing corners, wherein the number of inwardly facing corners is a natural number ≥ 2, preferably between 2 and 64; wherein the number of outward-facing corners is a natural number ≥ 3, preferably between 3 and 64; and wherein the number of outwardly facing corners is greater than or equal to the number of inwardly facing corners; whereby the fire protection molding is obtained.

In this case, the second coating material is preferably the second coating material defined in at least one of claims 7 or 9.

The fire protection molding according to the invention is particularly suitable for the protection of cables and wires, so for wrapping tubular articles with a relatively small diameter, in particular in the range of 10 to 50 mm. In such enclosures, the fire protection molding is particularly suitable to form curvatures with small radii. The crack formation is suppressed to the extent that the fire protection effect of the fire protection material according to the invention even under external influence of moisture, such. Outdoor rainfall or exposure to spray water in confined areas is maintained.

• Triphenylphosphat (CAS-Nr. 115-86-6), vorzugsweise in einem Massenanteil von < 1 %;
• Nonylphenolethoxylat (CAS-Nr. 9016-45-9), vorzugsweise in einem Massenanteil von < 1 %;
• Ammoniumhydroxid (CAS-Nr. 1336-21-6), vorzugsweise in einem Massenanteil von < 1 %;
• Pyrithionzink (CAS-Nr. 13463-41-7), vorzugsweise in einem Massenanteil von 0,1 bis 0,2 %;
• Terbutryn (CAS-Nr. 886-50-0), vorzugsweise in einem Massenanteil von 0,1 bis 0,2 %; und
• Zinkoxid (CAS-Nr. 1314-13-2), vorzugsweise in einem Massenanteil von 0,1 bis 0,2 %.

In an advantageous embodiment, the first coating material may contain or consist of a one-component material. The one-component material preferably contains the following substances:

• Triphenyl phosphate (CAS No. 115-86-6), preferably in a mass fraction of <1%;
• Nonylphenol ethoxylate (CAS No. 9016-45-9), preferably in a mass fraction of <1%;
• Ammonium hydroxide (CAS No. 1336-21-6), preferably in a mass fraction of <1%;
• Pyrithione zinc (CAS No. 13463-41-7), preferably in a proportion by mass of 0.1 to 0.2%;
• Terbutryn (CAS No. 886-50-0), preferably in a proportion by mass of 0.1 to 0.2%; and
• Zinc oxide (CAS No. 1314-13-2), preferably in a proportion by mass of 0.1 to 0.2%.

In this case, the respective mass fraction may preferably relate to the mass of the one-component material.

If the first coating material contains or consists of the one-component material as described above, it is characterized by good expansion or foaming properties and thus by a good fire-protection effect.

According to the invention, an optimal number of outwardly facing corners can also be determined by an angle α (inner angle) enclosed by the legs of the respective, outwardly facing corner being within a predetermined range. Thus, the angle enclosed by the legs of at least one, preferably all, outwardly facing corner α between 10 and 60 °, preferably 20 to 40 °, amount. If the angle α is too small, there is a risk that the fire protection molding or its coating at the edge (outward facing corner in the cross-sectional view) tears or tended to damage or disrupt the function there. If the angle α is too great, the mechanical stability of the fire protection molding is too low and the amount of applicable fire protection material or coating material is too low.

The object of the invention is further achieved by the use according to claim 11. In this case, the use of a polygon, preferably a star, in particular an equilateral star, proposed as a shape for a cross section of a fire protection molding. In this case, the polygon has inwardly facing corners and outward facing corners. The number of inward facing corners is a natural number ≥ 2, preferably between 2 and 32. The number of outward facing corners is a natural number ≥ 3, preferably between 3 and 32. The number of outward facing corners is greater than or equal to equal to the number of inward facing corners.

According to a preferred embodiment of the use according to the invention, the fire protection molding may be a fire protection molding according to one of claims 1 to 10.

The advantages disclosed in connection with the fire protection molding according to the invention apply analogously to the use according to the invention.

Further disclosure of the invention

According to the invention, the primer G of the primer P, in particular the primer with the name "Seevenax primer 113 -74 "(Mankiewicz Gebr. & Co., Hamburg), the hardener H of the hardener with the name" Seevenax 115-74 "(Mankiewicz Gebr. & Co., Hamburg) and the thinner V a thinner of the name "Thinner 903-76" (Mankiewicz Gebr. & Co., Hamburg).

• Triphenylphosphat (CAS-Nr. 115-86-6), Massenanteil von < 1 %;
• Nonylphenolethoxylat (CAS-Nr. 9016-45-9), Massenanteil von < 1 %;
• Ammoniumhydroxid (CAS-Nr. 1336-21-6), Massenanteil von < 1 %;
• Pyrithionzink (CAS-Nr. 13463-41-7), Massenanteil von 0,1 bis 0,2 %;
• Terbutryn (CAS-Nr. 886-50-0), Massenanteil von 0,1 bis 0,2 %; und
• Zinkoxid (CAS-Nr. 1314-13-2), Massenanteil von 0,1 bis 0,2 %;
• wobei sich der jeweilige Massenanteil auf die Masse des Einkomponentenmaterials 1K bezieht.

According to the invention, the first coating material S1 the one-component material 1K Containing the following composition:

• Triphenyl phosphate (CAS No. 115-86-6), mass fraction of <1%;
• Nonylphenolethoxylate (CAS No. 9016-45-9), mass fraction of <1%;
• Ammonium hydroxide (CAS No. 1336-21-6), mass fraction <1%;
• Pyrithione zinc (CAS No. 13463-41-7), mass fraction of 0.1 to 0.2%;
• Terbutryn (CAS No. 886-50-0), mass fraction of 0.1 to 0.2%; and
• Zinc oxide (CAS No. 1314-13-2), mass fraction of 0.1 to 0.2%;
• wherein the respective mass fraction is based on the mass of the one-component material 1K refers.

According to the invention, the second coating material S2 as the first two-component material 2K1 a topcoat of the name "ALEXIT topcoat 467-76 383N flame red 3000 matt" (Mankiewicz Gebr. & Co., Hamburg) included. Furthermore, the second coating material S2 as the second two-component material 2K2 a hardener of the name "ALEXIT-Hardener / Hardener 405 -74 "(Mankiewicz Gebr. & Co., Hamburg).

The primer according to the invention, in particular the primer, the hardener and the thinner, the first coating material, in particular the one-component material, the second coating material, in particular the first two-component material and the second two-component material, may contain further customary substances known to the person skilled in the art and technical unavoidable impurities. so that the sum of the ingredients of each considered material is 100%.

• 1 ist eine schematische Querschnittsansicht einer ersten Ausführungsform des erfindungsgemäßen Brandschutzformteils;
• 2 ist eine schematische Querschnittsansicht einer zweiten Ausführungsform des erfindungsgemäßen Brandschutzformteils;
• 3 ist eine schematische Darstellung eines Inkreises und eines Umkreises der ersten Ausführungsform des erfindungsgemäßen Brandschutzformteils;
• 4 ist eine schematische Querschnittsteilansicht einer dritten Ausführungsform des erfindungsgemäßen Brandschutzformteils;
• 5 ist eine schematische Darstellung einer Mehrzahl von Inkreisen und einer Mehrzahl von Umkreisen der dritten Ausführungsform des erfindungsgemäßen Brandschutzformteils;
• 6 ist eine schematische Ansicht eines Zustandes des erfindungsgemäßen Brandschutzformteils vor und nach einer Brand- oder Hitzeeinwirkung; und
• 7 (7a bis 7g) ist eine Darstellung einer Auswahl an Ausgestaltungen der Kontur exemplarischer Ausführungsformen des erfindungsgemäßen Brandschutzformteils.

Preferred embodiments of the fire protection molding according to the invention are the subject of the drawing.

• 1 is a schematic cross-sectional view of a first embodiment of the fire protection molding according to the invention;
• 2 is a schematic cross-sectional view of a second embodiment of the fire protection molding according to the invention;
• 3 is a schematic representation of an inscribed circle and a circumference of the first embodiment of the fire protection molding according to the invention;
• 4 is a schematic cross-sectional partial view of a third embodiment of the fire protection molding according to the invention;
• 5 is a schematic representation of a plurality of incursions and a plurality of circuits of the third embodiment of the fire protection molding according to the invention;
• 6 is a schematic view of a state of the fire protection molding according to the invention before and after a fire or heat; and
• 7 ( 7a to 7g) is an illustration of a selection of embodiments of the contour of exemplary embodiments of the fire protection molding according to the invention.

1 is a schematic cross-sectional view of a first embodiment of the fire protection molding according to the invention F , The fire protection molding F contains a fire protection material B or consists of this. The first embodiment of the fire protection molding according to the invention F has the shape of an equilateral star with six outward-facing corners EA or tips P and six inward-facing corners EGG on. Here are the outward facing corners EA on a single perimeter U arranged. The inward facing corners EGG are on a single incircle I arranged. The distance between the inscribed circle I and the circle U is indicated by the difference D, which is a crest height of the respective peak P equivalent. The two legs of an outward facing corner EA include the angle α.

2 is a schematic cross-sectional view of a second embodiment of the fire protection molding according to the invention F , The fire protection molding F contains a fire protection material B or consists of this. The second embodiment of the fire protection molding according to the invention F has the shape of a star with eight outward facing corners EA or tips P and eight inward-facing corners EGG on. Here are the outward facing corners EA on a single perimeter U arranged. In contrast, four of the inward facing corners EGG on a first circle I1 and four on a second outer circle 12 arranged. The two legs of an outward facing corner EA include the angle α.

3 shows schematically the circle belonging to the first embodiment of the fire protection molding according to the invention I and perimeter U , The height of the crest of each tip is calculated P as the amount of the difference D of the radius RU of the perimeter U and the radius RI of the incircle I ,

4 is a schematic partial cross-sectional view of a third embodiment of the fire protection molding according to the invention F. The fire protection molding F contains a fire protection material B or consists of this. The third embodiment of the fire protection molding according to the invention F has the shape of a star with 24 outward facing corners EA or tips P and 24 inward facing corners EGG on. There are 12 outward facing corners EA on a first circle U1 and 12 on a second outermost circle U2 arranged. In addition, 12 of the inward facing corners EGG on a first circle I1 and 12 on a second outer circle 12 arranged.

5 schematically shows the third embodiment of the fire protection molding according to the invention F belonging incarnation I1 ; I2 and perimeters U1 ; U2 on. The maximum comb height is calculated as the amount of the difference D of the radius RU2 the outermost circle U2 and the radius RI1 of the innermost circle I1 ,

6 schematically shows the state of the fire protection molding F before (left side) and after a fire or heat (right side). Here it can be seen that due to the effect of heat, the shape of the fire protection molding F due to the swelling of the fire protection material B or a component of the fire protection material B (not shown) from the polygon or star shape to a shape that is circular or substantially circular (see right side). Here is the radius RF of the fire protection molding F after the fire or heat exposure greater than the radius RU Therefore, the fire protection molding will take part F after the fire or heat a significantly larger volume than before the fire or heat.

7 is a schematic representation of a selection of embodiments of the contour of exemplary embodiments of the fire protection molding according to the invention. Thus, the cross-sectional view of the fire protection molding according to the invention, for example, a polygon with three outwardly facing corners (EA = 3) and three inwardly facing corners (EI = 3) ( 7a) , a polygon with EA = 4 / EI = 4 ( 7b) , a polygon with EA = 6 / EI = 6 ( 7c ), a polygon with EA = 6 / EI = 6 ( 7d ), a polygon with EA = 7 / EI = 7 ( 7e) , a polygon with EA = 8 / EI = 8 ( 7f) or a polygon with EA = 16 / EI = 16 ( 7g) his.

Fire protection test of the fire protection molding according to the invention

A fire protection test for a cable based on IEC 60331-21: 1999-04 was carried out by a building inspectorate, testing and inspection body. The cable was once wrapped without wrapping and once wrapped with the fire protection molding according to the invention. The purpose of the test was to determine the insulation content of the cable without or with coating of the fire protection material according to the invention under the action of flame. In this case, the investigated fire protection molding has the following composition: Fibersilikat as a carrier material, a primer of the composition (including amounts) according to claim 5, a first coating material ( including amounts) according to claim 6 and a second coating material (including amounts) according to claim 7.

Conditions: Test cable: Sienopyr FR (L) M2XH 4x10 black 0.6 / 1kV (manufacturer: PRYSMIAN Kabel und Systeme GmbH), rated voltage up to 0.6 / 1 kV, test voltage 1000 V AC (phase - phase), test duration: 90 min.

Test procedure Fire protection test

The respective test cable of 1.2 m in length was straightened and stored temporarily. Test # 1 tested the cable without fire protection material. In test # 2, the cable was wrapped in a single layer and tested with the fire protection molding according to the invention. In test # 3, the cable was inserted into a cable tray, wherein the cable tray was enveloped in one layer with the fire protection molding according to the invention. The sample cable was positioned in the cable tray on the burner side (Test # 3). The electrical connection of the test leads was made in accordance with IEC 60331-21. The four wires of the cable were connected to L1, L2, L3 and N. The voltage between the phases was 1000 V AC. The cable holder or cable tray has been grounded. The current flow per conductor of 0.25 A was realized by four load resistors. The insulation resistance is displayed with an LED panel. The cable was flamed for a period of 90 minutes or until short-circuit with a burner according to IEC 60331-11. The temperature of the flame (750 to 800 ° C) also corresponded to the aforementioned standard. The test was carried out in the box in accordance with IEC 61034-1. All other specifications of the above-mentioned standard were also complied with. At the latest after 90 minutes, the burner was turned off. Table 1: Test evaluation of fire protection test: test description Short circuit or conductor breakage during 90 minutes of flame treatment Insulation retention complies with the standard #1 Cable without fire protection material yes, after 9:45 min No # 2 Cable single layer wrapped with fiction, fire protection molding No Yes # 3 Cable in cable tray, with cable tray one layer wrapped with fiction, fire protection molding No Yes

Results fire protection test

Test # 1: The test cord without fire protection material did not meet the requirements of the test. Already after 9:45 minutes the fuses were triggered by a short circuit.

Test # 2: The test cable, which was wrapped in one layer with the fire protection molding according to the invention, has met the requirements of the test in accordance with IEC 60331-21: 1999-04 (90 min), since during the 90 minutes flame and the cooling phase of 15 min , neither the fuses nor lights failed.

Test # 3: The test cable, which was placed in a cable tray, which was wrapped in one layer with the fire protection molding according to the invention, has met the requirements of the test in accordance with IEC 60331-21: 1999-04 (90 min), since during the 90- minutes of flame treatment and the cooling phase of 15 min. neither the fuses nor lights failed.

Lifetime analysis of the fire protection molding according to the invention under external conditions

• - ETAG 026-2 Version August 2011 Fire Stopping and Fire Sealing Products. Part 2: Penetration Seals
• - EOTA Technical Report 024 Version July 2009 Characterisation, Aspects of Durability and Factory Production Control for Reactive Materials, Components and Products

The subject of the investigation is the lifetime analysis of the fire protection molding according to the invention under external conditions according to the criteria and procedures laid down by the European Organization for Technical Assessment (EOTA) in the following reference documents for the assessment of fire protection products:

• - ETAG 026-2 Version August 2011 Fire Stopping and Fire Sealing Products. Part 2: Penetration Seals
• - EOTA Technical Report 024 Version July 2009 Characterization, Aspects of Durability and Factory Production Control for Reactive Materials, Components and Products

The rating is from the Instituto de Tecnologia de la Construcción de Cataluña; (ITeC). The experiments were carried out in an accredited laboratory.

Background and conditions of life analysis

• - UV-Exposition
• - Regen
• - Temperaturen zwischen -20°C und 70°C
• - Hohe Luftfeuchtigkeit

As part of the life analysis, a fire protection molded part according to the invention having the identical composition as the fire protection material described above and investigated in the fire protection test was investigated. The weather conditions for use correspond to the type X (outdoor use) defined in the reference documents referred to above, in particular EOTA TR 024 section 4.2.3. The rating of this category takes into account the following factors and in the order given:

• - UV exposure
• - Rain
• - Temperatures between -20 ° C and 70 ° C
• - High humidity

The lifetime assessment methods are based on a 10-year product life.

Methodology of lifetime analysis

The aim of the analysis is to prove whether a significant impairment of the fire protection properties of the fire protection molding according to the invention occurs as a result of climatic influences. For this purpose, tissue samples are subjected to accelerated aging cycles, as described below. Subsequently, the thermal efficiency of these aged tissue samples and the control samples of the fire protection molding according to the invention, which have not been exposed to the aging cycles, are determined to compare the results between the two types of samples. In order to test the thermal efficiency, the fire protection molding is placed on steel plates and the external fire curve samples are subjected to EN 1363-23 to determine the temperature increase of the steel plates protected by the fabric. The time until the steel plates reach a temperature of 280 ° C and 400 ° C and the expansion height are determined. Prior to the thermal efficiency test, the aged samples are measured for thickness, areal weight and appearance, both before and after the aging cycles.

• Phase 1: UV-Kammer

The accelerated aging samples have been subjected to the conditions for Type X according to EOTA TR 024 section 4.2.3. Aging has been carried out in two consecutive phases:

• Phase 1: UV chamber

Exposure of the samples in UV chamber for 28 days under the conditions according to EN ISO 4892-3 with a combination A.2 with lamps of type 1A (see Table 1 of the standard) and according to cycle No. 3 (see Table 4) (cf. EN ISO 4892-3: 2006 Plastics. Methods of exposure to laboratory light sources. Part 3: Fluorescent UV lamps ( ISO 4892-3: 2006 ).

• - 5 h Trockenphase (50 ± 3)°C und relative Luftfeuchte unter 15 %
• - 1 h Wasserbesprühung bei einer Kammertemperatur von (25 ± 3)°C

The exposure consists of 112 uninterrupted cycles, one cycle includes:

• - 5 h dry phase (50 ± 3) ° C and relative humidity less than 15%
• - 1 h water spray at a chamber temperature of (25 ± 3) ° C

The UV radiation (45 W / m ² , 290 nm to 400 nm) is maintained throughout all cycles.

Phase 2: climate chamber

Exposure of the samples in the climatic chamber for 14 days was according to the hydrothermal cycle defined in Table 2 below. Table 2: Hydrothermal cycles (RH = relative humidity). Day phase 1 (6 hours) 2 (6 hours) 3 (6 hours) 4 (6 hours) 1 and 2 (20 ± 3) ° C, (70 ± 3) ° C, (20 ± 3) ° C, (70 ± 3) ° C, saturation RF (20 ± 5)% RF saturation RF (20 ± 5)% RF 3 and 4 (20 ± 3) ° C, (30 ± 3) ° C, (40 ± 3) ° C, (30 ± 3) ° C, saturation RF (40 ± 5)% RF saturation RF (40 ± 5)% RF 5, 6 and 7 (-20 ± 3) ° C (40 ± 3) ° C, (-20 ± 3) ° C (40 ± 3) ° C, saturation RF saturation RF

The hydrothermal cycle is carried out twice until a continuous exposure of 14 days is achieved.

Results of life analysis

Table 3 lists the effects due to the accelerated aging of the aged samples before and after the exposure cycles as described above. Table 3: Effects of aging property Samples before testing Samples after UV chamber Samples after hydrothermal cycles total loss basis weight (kg / m ² ) 2,407 2,357 2,350 2.36% Thickness ¹ (mm) 1.64 1.62 1.47 10.3% Appearance - Occurrence of spots with white powder on the topcoat after aging in the UV chamber ¹ Due to the heterogeneous nature and roughness of the product surface a large dispersion in the determination of individual thicknesses. They are mean values however, the results are indicative.

Subsequently, the aged samples (after the cycles shown in Table 2) and the control samples (which have not been exposed to aging cycles) are subjected to a thermal efficiency test to compare the guard times of both sample types. Table 4: Thermal efficiency test (all values are averages of 10 samples tested) rehearse Time ¹ (minutes) to reach the rating temperature Final expansion height ² (mm) Expansion ratio ³ T = 280 ° C T = 400 ° C control 27.6 63.2 27.4 18.9 aged 26.9 58.1 28.5 20.0 ¹ In order to be able to compare the results of the control samples and the aged samples, the results were corrected with the basis weight, assuming a linear approach. ² Both the values for the expansion height and the expansion ratio are to be understood as guidelines due to the high dispersion of the individual values. ³ Ratio between final expansion height and thickness before testing

Evaluation of the lifetime analysis

1. (a) Die mittlere Zeit zum Erreichen der Bewertungstemperatur der gealterten Proben darf nicht kleiner sein als 85 % der mittleren Zeit bei den Kontrollproben.
2. (b) Die Einzelzeit zum Erreichen der Bewertungstemperatur aller gealterten Proben darf nicht kleiner sein als 80 % der mittleren Zeit bei den Kontrollproben.

According to the reference documents mentioned above, the following evaluation criteria are defined:

1. (a) The mean time to reach the evaluation temperature of the aged samples must not be less than 85% of the mean time for the control samples.
2. (b) The individual time to reach the evaluation temperature of all aged samples shall not be less than 80% of the mean time for the control samples.

The evaluation results according to these criteria are shown in Table 5. Table 5: Behavior of aged samples evaluation criterion Rating temperature rating T = 280 ° C T = 400 ° C (a) medium times 97.4% 92.0% Criterion is fulfilled (b) individual times all samples> 89% 1 sample = 78%, all other samples> 86% Criterion fulfilled (see comment below)

The average time required to reach the evaluation temperature of the aged samples (above evaluation criterion (a)) is at least 92% at both evaluation temperatures, thus satisfying the evaluation criterion (a).

When considering the individual times (above evaluation criterion (b)) all samples reach the evaluation temperature of 280 ° C in at least 89% of the mean time of the control samples. With regard to the evaluation temperature of 400 ° C, all but one sample are> 86%. Thus, the evaluation criterion (b) is easily met with one exception. The only sample that does not meet evaluation criterion (b) has a basis weight of 2.26 kg / m ² (2.21 kg / m ² after aging). This is the lowest value of all samples. The mass loss of the product due to aging cycles is acceptable.

Thus, no negative aging effect on the final thickness of the samples after the thermal efficiency test (final expansion height) is observed. The thickness determinations are to be understood as indicative of the uneven surface of the product, both for the initial fabric and for the expanded fire protection material after thermal efficiency testing.

Accordingly, the tested fire protection molding according to the invention for use in weather conditions of type X (outdoor use) with a planned life of 10 years is to be considered suitable.

In summary, it is found that the fire protection molding according to the invention fulfills both the requirements of the fire protection test and the life analysis. Thus, the fire protection molding according to the invention when used for wrapping a cable, a line, a structural part or a system-based built-in component offers improved fire protection due to its polygonal shape in the cross-sectional view. The fire protection effect can be further improved even in weather-related use by using the primer, by means of which crack formation in the coating of the fire protection molded part during the formation of radii, in particular narrow radii, is effectively avoided.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• DIN 4102 [0002]
• EN ISO 4892-3 [0096]
• EN ISO 4892-3: 2006 [0096]
• ISO 4892-3: 2006 [0096]

Claims (12)

Fire protection molding (F) for covering a cable, a pipe or a structural part of a building; wherein the fire protection molding (F) preferably has the shape of an elongated hollow body; wherein the fire protection molding (F) in the cross-sectional view of the shape of a polygon (P), preferably a star, in particular an equilateral star has; the polygon (P) having inwardly facing corners (EI) and outwardly facing corners (EA); wherein the number of inward-facing corners (EI) is a natural number ≥ 2, preferably between 2 and 32; wherein the number of outward-facing corners (EA) is a natural number ≥ 3, preferably between 3 and 32; wherein the number of outwardly facing corners (EA) is greater than or equal to the number of inwardly facing corners (EI); and wherein the fire protection molding (F) comprises a fire protection material (B) or consists of a fire protection material (B). Fire protection molding (F) after Claim 1 characterized in that the polygon (P) has at least one inscribed circle (I) and at least one circumference (U); wherein the inwardly facing corners (EI) are disposed on the inscribed circle (I) or on a plurality of incursions (11, 12, ...); and wherein the outwardly facing corners (EA) are disposed on the perimeter (U) or on a plurality of circling (U1, U2, ...). Fire protection molding (F) after Claim 2 , characterized in that the amount of the difference (D) of the radius (RU) of the outermost circumference (U) and the radius (RI) of the innermost inscribed circle (I) is between 5 and 50 mm, preferably between 8 and 25 mm, in particular between 10 and 20 mm; and / or wherein the radius (RU) of the outermost circumference (U) is preferably between 9 and 200 mm, preferably 15 to 150 mm; and / or wherein the radius (RI) of the innermost inscribed circle (I) is preferably between 5 and 100 mm, more preferably between 10 and 60 mm, in particular between 10 and 50 mm. Fire protection molding (F) according to one of Claims 1 to 3 , characterized in that the fire protection material (B) comprises a carrier material (T); wherein the carrier material (T) contains or consists of a fibrous silicate, preferably a calcium silicate and / or a silicon silicate; and / or wherein the carrier material (T) preferably has an average layer thickness in the range of 0.5 to 4 mm; and / or wherein preferably the layer thickness at any point of the carrier material deviates by at most 20%, preferably by at most 10%, in particular by at most 5%, from the mean layer thickness of the carrier material (T); and / or the carrier material (T) is formed as a braided yarn, a woven fabric, a braided braid or a lattice structure. Fire protection molding (F) according to one of Claims 1 to 4 characterized in that the fire protection material (B) further comprises a first coating material (S1); wherein the first coating material (S1) is applied to the carrier material (T) or contained in the carrier material (T); wherein the fire protection material (B) further comprises a primer (P); wherein the primer (P) preferably contains or consists of a primer (G), a hardener (H) and a thinner (V); wherein the primer (G) contains: xylene (CAS No. 1330-20-7), preferably in a mass fraction of 12.5 to 20%; Hydrocarbons, C9, aromatics (CAS No. 64742-95-6), preferably in a proportion by mass of 5 to 12.5%; Reaction product: Bisphenol A-epichlorohydrin resins with a molecular weight of 700 to 1100 (CAS No. 25068-38-6), preferably in a mass fraction of 5 to 12.5%; Butan-1-ol (CAS No. 71-36-3), preferably in a mass fraction of 5 to 10%; Trizinc bis (orthophosphate) (CAS No. 7779-90-0), preferably in a mass fraction of 5 to 12.5%; Ethylbenzene (CAS No. 100-41-4), preferably in a mass fraction of 1 to 5%; 4-hydroxy-4-methylpentan-2-one (CAS No. 123-42-2), preferably in a mass fraction of 1 to 5%; Solvent naphtha (petroleum), lightly flavored (CAS No. 64742-95-6), preferably in a proportion by mass of 0.1 to 0.25%; and silica (CAS No. 7631-86-9), preferably in a mass fraction of 1 to 5%; wherein the hardener (H) contains: hexamethylene-1,6-diisocyanate, homopolymer (CAS No. 28182-81-2), preferably in a proportion by mass of at least 40%; Hydrocarbons, C9, aromatics (CAS No. 64742-95-6), preferably in a mass fraction of 25 to 40%; Hexamethylene-1,6-diisocyanate (CAS No. 822-06-0), preferably in a proportion by mass of 0.25 to 0.5%; Dimethylbis [(1-oxoneodecyl) oxy] stannane (CAS No. 68928-76-7), preferably in a proportion by mass of 0.1 to 0.25%; and n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 1 to 5%; wherein the diluent (V) contains: xylene (CAS No. 1330-20-7), preferably in a mass fraction of 40 to less than 100%; Butan-1-ol (CAS No. 71-36-3), preferably in a mass fraction of 20 to 25%; Ethylbenzene (CAS No. 100-41-4), preferably in a mass fraction of 12.5 to 20%; and n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 20 to 25%; wherein the respective mass fraction of the constituents of the primer (G), of the hardener (H) and of the diluent (V) preferably relates to the mass of the primer (P); and wherein the mass ratio of the primer (G) to the curing agent (H) is preferably 4 to 6, preferably 5, to 1. Fire protection molding (F) after Claim 5 characterized in that the first coating material (S1) contains or consists of a one-component material (1K); wherein the one-component material (1K) preferably contains the following substances: triphenyl phosphate (CAS No. 115-86-6), preferably in a mass fraction of <1%; Nonylphenol ethoxylate (CAS No. 9016-45-9), preferably in a mass fraction of <1%; Ammonium hydroxide (CAS No. 1336-21-6), preferably in a mass fraction of <1%; Pyrithione zinc (CAS No. 13463-41-7), preferably in a proportion by mass of 0.1 to 0.2%; Terbutryn (CAS No. 886-50-0), preferably in a proportion by mass of 0.1 to 0.2%; and zinc oxide (CAS No. 1314-13-2), preferably in a proportion by mass of 0.1 to 0.2%; wherein the respective mass fraction preferably relates to the mass of the one-component material (1K). Fire protection molding (F) after Claim 5 or 6 characterized in that the fire protection material (B) further comprises a second coating material (S2); wherein the second coating material (S2) is applied on the primer (P) or on a mixture of the primer (P) and the first coating material (S1); the second coating material (S2) containing or consisting of a first bicomponent material (2K1), a second bicomponent material (2K2), and preferably the diluent (V); wherein the first two-component material (2K1) preferably contains the following substances: xylene (CAS No. 1330-20-7), preferably in a mass fraction of 1 to 5%; Ethylbenzene (CAS No. 100-41-4), preferably in a mass fraction of 1 to 5%; light, aromatic solvent naphtha (petroleum) (CAS No. 64742-95-6), preferably in a proportion by mass of 0.5 to 5%; 1,3,3-trimethyl-N- (2-methylpropylidene) -5 - [(2-methylpropylidene) amino] cyclohexane-methylamine (CAS No. 54914-37-3), preferably in a proportion by mass of 0.25 to 0, 5%; Dimethylbis [(1-oxoneodecyl) oxy] stannane (CAS No. 68928-76-7), preferably in a proportion by mass of 0.1 to 0.25%; n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 12.5 to 15%; 2-methoxy-1-methylethyl acetate (CAS No. 108-65-6), preferably in a mass fraction of 1 to 5%; and ethyl 3-ethoxypropionate (CAS No. 763-69-9), preferably in a mass fraction of 1 to 5%; wherein the second bicomponent material (2K2) preferably contains the following substances: hexamethylene-1,6-diisocyanate Homopolmyer (CAS No. 28182-81-2), preferably in a mass fraction of at least 40%; Aromatics, hydrocarbons, C9 (CAS No. 64742-95-6), preferably in a mass fraction of 25 to 40%; Hexamethylene-1,6-diisocyanate (CAS No. 822-06-0), preferably in a proportion by mass of 0.25 to 0.5%; Dimethylbis [(1-oxoneodecyl) oxy] stannane (CAS No. 68928-76-7), preferably in a proportion by mass of 0.1 to 0.25%; and n-butyl acetate (CAS No. 123-86-4), preferably in a mass fraction of 1 to 5%; wherein the respective mass fraction of the components of the first two-component material (2K1) and the second two-component material (2K2) preferably relates to the mass of the second coating material (S2); and wherein the diluent (V) preferably constitutes the residual mass fraction of the second coating material (S2). Fire protection molding (F) according to one of Claims 5 to 7 characterized in that the first coating material (S1) has an average layer thickness in the range of 0.5 to 4 mm; wherein preferably the layer thickness of the first coating material (S1) at any point by at most 20%, preferably at most 10%, in particular at most 5%, deviates from the average layer thickness of the first coating material (S1). Fire protection molding (F) after Claim 7 or 8th characterized in that the second coating material (S2) has an average layer thickness in the range of 0.5 to 4 mm; or the first coating material (S1) and the second coating material (S2) together have an average layer thickness in the range of 1 to 4 mm; and wherein preferably the layer thickness of the second coating material (S2) differs from the mean layer thickness of the second coating material (S2) at any point by at most 20%, preferably by at most 10%, in particular by at most 5%; or wherein preferably the layer thickness of the combination of the first coating material (S1) and the second coating material (S2) at any point by at most 20%, preferably at most 10%, in particular at most 5%, of the average layer thickness of the combination of differs first coating material (S1) and the second coating material (S2). Fire protection molding (F) according to one of Claims 1 to 9 , characterized in that one of the legs of at least one, preferably all, outwardly facing corner (EA) included angle (α) between 10 and 60 °, preferably 20 to 40 °. Use of a polygon (P), preferably a star, in particular an equilateral star, as a shape for a cross section of a fire protection molding (F); the polygon (P) having inwardly facing corners (EI) and outwardly facing corners (EA); wherein the number of inward-facing corners (EI) is a natural number ≥ 2, preferably between 2 and 32; wherein the number of outward-facing corners (EA) is a natural number ≥ 3, preferably between 3 and 32; and wherein the number of outwardly facing corners (EA) is greater than or equal to the number of inwardly facing corners (EI). Use after Claim 10 , characterized in that the fire protection molding (F) a fire protection molding (F) according to one of Claims 1 to 10 is.

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