EP3899131A1

EP3899131A1 - Textile heat-, fire- and/or smoke-proof material

Info

Publication number: EP3899131A1
Application number: EP19809112.6A
Authority: EP
Inventors: Claude Hosotte; Markus LÄPPLE; Barbara Niederberger
Original assignee: Nolax AG
Current assignee: Nolax AG
Priority date: 2018-12-21
Filing date: 2019-12-02
Publication date: 2021-10-27
Also published as: CN113167015A; EP3670738A1; US20220042237A1; WO2020126433A1

Abstract

The invention relates to a textile heat-, fire- and/or smoke-proof material, comprising a flat, textile substrate which is coated with a polymer composition, the polymer composition containing a cross-linked silicone resin and metal pigments. The invention also relates to a method for producing a textile heat-, fire- and/or smoke-proof material, and to the use of a textile structure as heat protectors in vehicles and as fire and heat protection in buildings.

Description

Textile heat, fire and / or smoke protection material

The invention relates to a textile heat, fire and / or smoke protection material, comprising a textile, flat substrate which is coated with a polymer composition, the polymer composition containing a crosslinked polysiloxane and metal pigments ent, a method for producing a Textile heat, fire and / or smoke protection material and the use of a textile heat, fire and / or smoke protection material according to the general terms of the independent claims as a heat protector.

High combustion temperatures are necessary for the combustion of exhaust gases, for example in the engine compartment or exhaust systems. Cables and hoses, which are used in such systems (turbochargers, flame tubes, catalysts) and often consist of elastomers, must be permanently protected from such high temperatures to prevent their early aging and fatigue. Tired elastomers can tear or burst, which can result in further damage and, in the worst case, vehicle fire.

In order to protect the hoses or cables from hot / cold cycles who use the heat protection materials. These can be laminated, for example with an aluminum foil, a reflective coating or a glass fabric. Multicomponent systems are usually used for lamination, which require a primer, an additional bond and / or a backstroke. In some cases, systems are used that do not have sufficient heat resistance at temperatures> 300 ° C. Finally, paint, varnish and coatings are known, but they are not applied to textile structures but to flat devices and thus lose flexibility and deformability compared to textiles. In DE 10 2006 048 912 a glass fabric is provided with a primer made of polydimethylsiloxane. This primer is aluminized in a vacuum using gas phase separation and the product is given a backstroke. The product is sometimes used in close proximity to turbola. On the one hand, the method discussed is complex and expensive. On the other hand, the coatings peel off after a certain time when tested in a thermal oven at temperatures> 300 ° C.

It is known from EP 1 522 534 that heat barriers can be formed from a silicon-containing base substrate, a connecting layer and a protective layer with aluminates. However, neither flexible substrates nor one-component coatings are open-faced.

From US 2010/0258371 a curable coating made of polysiloxane resin and reflective metal pigments is known. However, the coating is applied to metal substrates of the automotive industry, such as titanium, iron or aluminum. The coating of a fabric is not disclosed.

EP 1 429 104 discloses a thermal camouflage tarpaulin for covering heat sources against detection of thermal imaging cameras. The aluminum powder is coated on silicone elastomer and / or bottom

included in the polyurethane base. The carrier textile includes glass filament.

However, the thermal camouflage can only be exposed to high temperatures of over 1000 ° C for periods of a few minutes and is therefore not powerful enough for use in the high temperature range.

US Pat. No. 6,872,440 discusses a composition of a glass fiber substrate which is coated with a binder material (acrylic latex) and a filler material (such as fly ash). additionally has a heat-reflecting layer, for example made of elastomer, aluminum fiber or ceramic. The coating is not only more complex, but also limited in terms of its design (flat substrate) and heat resistance (88 ° C) to its intended use in insulating roof construction.

It is therefore an object of the invention to overcome the disadvantages of the prior art. In particular, a flexible structure for insulation against heat and protection against fire and / or smoke is to be provided. The structure should be resistant to high temperatures over long periods of time, in particular also be suitable for use in the automotive sector. Manufacturing should be simple and cost effective.

The invention relates to a textile heat, fire and / or smoke protection material, comprising a textile, flat substrate which is coated or completely or partially impregnated with a polymer composition, the polymer composition containing a crosslinked polysiloxane and metal pigments.

Crosslinked polysiloxane in the sense of this invention is to be understood as a polysiloxane which has resulted from polymerization reactions, in particular condensation reactions, of silicone resin.

A silicone resin in the sense of this invention is curable to form crosslinked polysiloxane; In the case of silicone resin, some of the silicon atoms in the resin are mutually linked via oxygen atoms in branched structures before curing. The silicone resin is produced from a pre-crosslinking reaction of oligosiloxanes, which units of the formula

- (RiRzSi-O) comprise, wherein RI and R2 independently of one another represent hydrogen, hydroxyl, alkoxy, alkyl, aryl, vinyl groups and n represents a natural number between 1 and 100, preferably between 5 and 60. The oligosiloxanes preferably have at least partially reactive groups at the positions R 1, R, in particular hydrogen, hydroxyl and / or alkoxy groups. Particularly preferably, the oligosiloxanes have at the positions R 1, R _{2, in} addition to the hydrogen, hydroxy and / or alkoxy groups, some organic side groups, in particular alkyl and / or aryl side groups, in particular methyl and / or phenyl side groups or combinations thereof. The silicone resin can be in the form of an emulsion or dispersion.

The polymer composition comprising a crosslinked polysiloxane and metal pigments preferably contains> 60% by weight, particularly preferably> 70% by weight and very particularly preferably> 80% by weight of crosslinked polysiloxane.

A crosslinked polysiloxane according to the invention can have a high twist; it can be tough but flexible. A crosslinked polysiloxane according to the invention has proven to be particularly heat-resistant compared to alternative polymers, for example silicone-based elastomers. Insulation materials based on cross-linked polysiloxane according to the invention are distinguished by the fact that they are non-flammable even at temperatures above 800 ° C.

Known formulations from the heat protection sector, for example heat, fire and / or smoke protection materials based on polyurethane and / or polydimethylsiloxane, cannot withstand high temperatures in the long term, that is to say only for a few minutes. A textile structure coated according to the invention, on the other hand, exhibits a high heat reflection effect, even if it is exposed to temperatures> 450 ° C. over a long period, up to 150 hours. The hit reflective effect was described as a heat delta after the heavy availability test standard DBL 5307-5.2 of the automotive industry (Mercedes-Benz AG). The heat delta is the difference between a first temperature measured on a first side of a specimen facing a heat source and a second temperature on the opposite side of the specimen from that Heat source is turned away, is measured. The details of the test arrangement can be found in the examples below.

If a textile fire and / or smoke protection material according to the invention is subjected to a flame-retardant test in accordance with DBL 5307-5.2, the heat delta remains constant over several hours at temperatures up to 500 ° C. The coated structure does not lose any significant proportions of the metal pigment even after several hours in the thermal furnace. After 120 minutes at 800 ° C, the metal pigment continues to adhere to the textile. Flammability is not observed even at temperatures> 800 ° C.

The textile according to the invention is particularly suitable for use as a smoke apron in the sense of the European standard for smoke and heat control DIN EN 12101. However, the textile is also suitable for use in the automotive industry. The textile shows very good results in the media resistance test according to ASTM D896-04, for example against petrol, diesel, motor oil, brake fluid, brake cleaner and road salt solutions.

The crosslinked polysiloxane can be a crosslinked polysiloxane with organic side groups, the side groups being independent of one another and preferably being selected from the group consisting of alkyl, aryl, hydrogen, hydroxy and alkoxy, and combinations thereof. The crosslinked polysiloxane preferably has at least partially side chains with phenyl groups, methyl groups and / or combinations thereof. The use of phenyl Side groups has the advantage that a particularly high heat resistance of the coated or impregnated substrate can be achieved. In addition, phenyl groups are more compatible with other resins and with fillers.

The polymer composition can contain at least one further polymer which is different from cross-linked polysiloxane. For example, in addition to crosslinked polysiloxane, the polymer composition can contain at least one further polymer which is selected from the group: polyacrylate, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, styrene-acrylate copolymer, ethylene-vinyl acetate copolymer, acrylate Urethane copolymer, polyurethane copolymer, vinyl chloride-ethylene, vinyl chloride-vinyl acetate, vinyl chloride-vinyl acetate-ethylene copolymer and combinations thereof. The further polymer can have been provided in the form of a co-emulsion or co-dispersion.

The polymer composition comprising a crosslinked polysiloxane, at least one further polymer and metal pigments preferably contains between 5 and 30% by weight of the at least one further polymer, particularly preferably between 10 and 20% by weight.

A polymer composition containing, in addition to crosslinked polysiloxane, at least one other suitable polymer proves to be more elastic, more flexible, less brittle and therefore more suitable for coating a textile substrate. The polymer composition containing at least one further suitable polymer also adheres better to the substrate; it does not crumble when the substrate is folded, gathered and folded. In addition, the additional polymer can be selected so that the aluminum pigments are better integrated.

The textile, flat substrate can be a fabric, scrim or fleece. The fabric, scrim or fleece can contain fibers, in particular glass fibers or mineral fibers. Polyaramide fibers, for example Kevlar, or oxidized, thermally stabilized polyacrylonitrile (PAN) fibers, for example Panox®, are also conceivable.

Textile structures are flexible, foldable, gatherable and flexible. They can be easily adapted to the needs of the place of use, such as complex cable or hose structures. Anyone who avoids the unnecessary material costs and prevents unnecessary material from interfering, for example in the engine compartment. Textile structures can be provided in a space-saving manner for fire protection installations, for example as smoke protection curtains or heat protection roller shutters. Their flexibility distinguishes textile structures insbesonde ^¬ re-surface over barriers or insulation panels. At the same time, textile structures are more resistant than varnishes or paints thanks to the fabric, scrim or fleece structure. They offer an advantageous compromise between insulation substance and adaptability to the space available on site.

The metal pigments have high heat stability. They are preferably aluminum pigments. Pigments made of chrome, silver or copper are also conceivable, in addition or as an alternative to the aluminum pigments. Aluminum is preferred due to the suitable melting point and economic considerations.

The metal pigments can be in the form of flakes or flakes and / or a maximum diameter of 1 to in area

100 pm, preferably 5 to 45 pm, having, determined by analysis Siebana ^¬. The metal pigments of the non-leafing type are preferably used, which are distributed uniformly in the film matrix. Before the metal pigments are used in the form of a VOC-free paste for aqueous systems. The textile, two-dimensional substrate is coated with a polymer composition or completely or partially impregnated, this polymer composition preferably containing metal pigments in a minimum proportion of 7% by weight of the polymer composition, preferably between 10 and 25% by weight. %, particularly preferably between 12 and 20% by weight. A relatively high proportion of metal pigments can better ensure the heat resistance of the heat, fire and smoke protection material.

The textile heat, fire and / or smoke protection material can be such that the substrate is only coated on one side. Despite the simple coating, the heat, fire and / or smoke protection material has the required heat and fire resistance.

The invention further relates to a method for producing a textile heat, fire and / or smoke protection material, preferably a textile heat, fire and / or smoke protection material as described above, comprising the steps:

- Providing a textile, flat substrate;

- Applying a dispersion or emulsion to at least part of the substrate, the dispersion or emulsion containing an emulsified or dispersed silicone resin and metal pigments;

- Hardening the applied dispersion or emulsion to a coating.

As described above, a textile, fabric or nonwoven, optionally made of glass fibers or mineral fibers, can serve as the textile, flat substrate.

For the purposes of this invention, dispersion or emulsion meant that in addition to the dispersed metal pigments, the others Additives, in particular silicone resin, other polymers, fillers, additives to suppress flammability, can be present in a dispersed and / or emulsified state.

The silicone resin can preferably be produced from oligosiloxanes with side groups and chain lengths, as defined above. The silicone resin particularly preferably has, in addition to the hydrogen, hydroxyl and / or alkoxy groups, side chains with methyl and / or phenyl groups and combinations thereof, since such silicone resins react to give particularly heat-resistant coatings, as described above. The silicone resin emulsion can be a methyl / phenyl silicone resin emulsion (Me / Ph-Si resin)

Hydroxy or alkoxy groups as a side group of the siloxane main chains of the silicone resin lead to better curing. During curing, condensation reactions between polysiloxane segments are favored. However, reactions can also follow between silicone resin on the one hand and fillers, other resins, other monomeric or prepolymeric fractions in co-dispersion or co-emulsion, other additives and / or substrates.

It is preferred that the dispersion or emulsion is applied to only one upper side of the textile, flat substrate. Even with a simple line, the advantageous properties are achieved as described above, in particular the simple coated substrate passes the flame retardant test standard DBL 5307 and fulfills the smoke and heat control standard according to DIN EN 12101. No further coatings are required for this, which saves the process time and efficient.

When applied, the silicone resin is in the form of a dispersion or emulsion, preferably in the form of an aqueous dispersion. The SI- Liquor resin dispersion can exist as a one-component system. Such a one-component system can simply be networked with heat input. The handling of such a one-component system is relatively simple. In addition, material costs can be saved compared to multi-component systems.

The dispersion or emulsion can contain a co-dispersion or co-emulsion. In addition to the silicone resin, there is also a polymer which is different from polysiloxane in the dispersion or emulsion, preferably a co-dispersion comprising polyacrylates, ethylene-acrylic acid copolymers, ethylene-methacrylic acid copolymers, styrene-acrylate copolymers, Ethylene-vinyl acetate copolymers, acrylate-urethane copolymers, polyurethane copolymers, vinyl chloride-ethylene, vinyl chloride-vinyl acetate, vinyl chloride-vinyl acetate-ethylene copolymers and / or combinations thereof.

After hardening, the dispersion or emulsion serves not only as its main function as an insulator and fire / smoke protection, but also as a binding agent. A binding agent can strengthen or support the fabric at the point of the warp / weft crossing.

The dispersion or emulsion can be water-based. “What is based on water” means that the continuous phase is water. A water-based dispersion or emulsion can penetrate well into the substrate, is easy to handle, is good for the health and the environment.

The hydroxy and alkoxy groups of the silicone resin can react together after a condensation reaction, which leads to post-crosslinking of the silicone resin and thus to hardening. The condensation reaction can be accelerated by adding a tin-based catalyst, for example dibutyltin dilaurate. The Post-crosslinking is preferably carried out with the addition of heat, preferably in a temperature range between 100 and 300 ° C., particularly preferably between 120 and 250 ° C. and very particularly preferably between 150 and 230 ° C. Such a post-crosslinking, in particular post-crosslinking of the silicone resin, results in a particularly high heat resistance of the coating.

Preferably, after applying the dispersion or emulsion to at least part of the substrate and before the applied dispersion or emulsion has hardened, an intermediate step is carried out, namely drying the dispersion or emulsion at 25 to 75 ° C., preferably at 40 up to 60 ° C. However, the dispersion or emulsion can also be dried and cured during a single temperature treatment, in which case a temperature gradient can be used, for example starting at 50 ° C. and ending at 230 ° C.

The dispersion or emulsion can contain organic solvents. However, the solvent content should not exceed 6% by weight. On the one hand, a low solvent content helps to protect the environment and on the other hand increases occupational safety.

Composites that have been coated with a dispersion or emulsion according to the invention retain their original properties, such as flexibility, even after drying. The material does not stiffen due to the coating.

The constituents of the dispersion or emulsion can be premixed. The dispersion or emulsion according to the invention is knife-coated directly onto the textile substrate. A pre-primer is not necessary. A back stroke is also not necessary. You can work with a single coat of coating. The invention but also includes methods in which several, in particular two to five lines are used.

The dispersion or emulsion may include other ingredients. For example, the composition may have added pigments and / or fillers for the high-temperature performance, for the viscosity setting and for improved coating.

The dispersion or emulsion can also contain thickeners, preferably inorganic and particularly preferably highly disperse silica, without a deterioration in heat resistance compared to organic thickeners. Thickeners can simplify the applicability of the dispersion or emulsion.

Other additives may include neutralizing agents, dispersing agents, rheology aids, thickening agents, defoaming agents such as biocide, or wetting agents.

The dispersion or emulsion preferably has a pH between 6 and 10 at the time of application.

The pH value is used for the formulation and compatibility of the components. Furthermore, the pH value of the dispersion or emulsion should be chosen so that it does not attack the metal particles.

The dispersion or emulsion can be applied over a large area. The application weight is preferably at least 70 g / m ² . The dispersion or emulsion can then be dried at a defined temperature between room temperature and 150 ° C., preferably 30 ° C. to 100 ° C. and particularly preferably 50 ° C. to 80 ° C. The dispersion or emulsion can be applied by means of a roller, stencil, knife or spray.

The different application has the advantage that the silicone resin can be applied to different substrates and according to the intended use.

The solids content of the dispersion or emulsion is preferably over 50 percent by weight and particularly preferably between 60 and 80 percent by weight.

A high solids content has the advantage in aqueous systems that faster drying is possible or less energy is required for drying. The solids content can result from a high proportion of silicone resin, fillers and / or insoluble additives. However, the solids content should not exceed 50% by weight.

Additives can be added to suppress the combustibility of the coated substrate.

The dispersion or emulsion can have a viscosity of 500 to 40Ό00 mPa s, preferably a viscosity of 1Ό00 to 30Ό00 mPa s and very particularly preferably a viscosity of 2Ό00 to 10Ό00 mPa s.

The viscosity values were determined using the Brookfield method with a Brookfield DVI +. The measurements for the viscosities of 500 to 40Ό00 mPa s were carried out at 23 ° C with a spindle 4 at 20 rpm.

A system according to the invention can be low-viscosity so that the textile structure is well wetted. Due to the lower viscosity ity of the dispersion or emulsion compared to conventional 100% silicone resin, the dispersion or emulsion can penetrate the glass fabric very well. Chain / weft crossings are clearly solidified.

Textile heat, fire and / or smoke protection materials are particularly suitable for components in the automotive industry, especially for the engine and exhaust area, but also for structural fire protection.

The invention therefore relates to the use of a textile heat, fire and / or smoke protection material as described above in the construction sector and as a heat protector in a vehicle. Components with such heat, fire and smoke protection materials can make a significant contribution to safety. On the one hand, the components are more durable than previously used components due to the material properties, on the other hand, the spread of fires and damage to buildings / engines can be significantly restricted due to the advantageous properties.

EXAMPLE

The following example serves for illustration and is not intended to limit the scope of the invention.

An isoGLAS filament fabric (GIVIDI) with a weight of 420 g / m ² and a thickness of 0.5 mm was used as the textile, flat substrate. Table 1 shows the basic raw materials are listed by two playing liable for ^¬ aqueous coatings.

The examples according to the invention are referred to below as test specimen 1 (PK1) and test specimen 2 (PK2).

Table 1 : Name Chemical Cha- trade name Share in the share of the characterization (manufacturer) Composition- Composition for PKlung for PK2

Si resin aqueous Me / Ph-Si silres 86.20% by weight 68.67% by weight

Resin emulsion EP 52 M

(50% solids (Wacker Si content) licone)

Prepolymer Aqueous Acrylate (nolax AG) n / a 17.17% by weight

Proportions in dispersion

Co- (60% solids

Dispersion stop)

Al pigments aqueous non-Aquamet 12.88% by weight 12.88% by weight leafing aluminum CP / 2600/60

paste, 60% Schlenk

Solids content

Defoamer combination of Agitan 701 0.02 wt% n / a

liquid coal minting

Hydrogens,

Silicones, oxyalkylated ver

bindings, modes

hard feast

fabrics and not

ionic emulga

goals

Verdr- Based on polyacrylate BorchiGel A 0.9% by weight 1.28% by weight based on LA OMG boron

The following four samples were used for comparison, which are referred to below as comparison samples (VM):

- VM1: isoGLAS filament fabric with coating according to Table 1, but without Al pigments - VM2: glass fabric, 430g / m ² , with several lines based on polysiloxane, product TG-430-G-SI from Valmieras Stikla Skiedra AS, intended as a heat layer in the automotive sector;

- VM3: glass fabric with stainless steel threads, with a coating based on polyurethane, including Al pigments, product TG-550 / 9LV4A F120 1 from HKO Heat Protection Group;

- VM4: isoGLAS filament fabric coated with a hot

sealable adhesive comprising ethylene-acrylic acid copolymer dispersion and silicone resins, as well as an aluminum foil.

PRODUCTION OF THE TEST BODIES

The isoGLAS filament fabric (approx. 60 x 30 cm) was coated on one side with the respective aqueous formulation for PK1 or PK2 (approx. 80 g / m ² , dry). The sample was then dried in an oven at 50 ° C. for 20 minutes and activated at 230 ° C. for 20 minutes. The sample sizes required for the test methods (to be taken from the method specification in each case) were cut. Samples are stored for one day.

PRODUCTION OF THE COMPARATIVE PATTERN

For VM1, an isoGLAS filament fabric with a weight of 420 g / m ² and a thickness of 0.5 mm (approx. 60 x 30 cm) was coated on one side with an aqueous formulation (approx. 80 g / m ² , dry). The aqueous formulation consisted of 99% by weight of aqueous Me / Ph-Si resin emulsion (50% solids content, Silres EP 52 M) and 1% by weight of polyacrylate-based thickener (BorchiGel A LA). The swatch was oven dried at 50 ° C for 20 minutes and activated at 230 ° C for 20 minutes. The sample sizes required for the test methods were cut. Storage of samples for one day. For VM2 and VM3, commercially available products from the automotive and heat protection sectors were purchased (details above).

An isoGLAS filament fabric (GIVIDI) with a weight of 420 q / m ² and a thickness of 0.5 mm (approx. 60 x 30 cm) was provided for VM4. In addition, an aqueous formulation was provided, consisting of 35% by weight heat-sealable adhesive based on aqueous ethylene-acrylic acid copolymer dispersion (nolax S35.3110), 52% by weight aqueous Me / Ph-Si resin emulsion (50% Solids content, Silers MPF 52 M from Wacker Silicone), 13% by weight calcined kaolin (Kamin 70), 0.02% by weight defoamer (Agitan 701, Münzing) and 0.5% by weight dispersant. The aqueous formulation was applied to the matt side of an aluminum foil with a thickness of 25 mh (approx. 70 g / m ² ). The iso GLAS filament fabric (a piece of approx. 20x30cm) was placed lengthways (with the back downwards) directly into the still wet film and pressed on evenly.

The swatch was oven dried at 50 ° C for 20 minutes and activated at 230 ° C for 20 minutes. The sample sizes required for the test methods were cut. Samples are stored for one day.

HEAT RESISTANCE INFRARED RADIATORS (standard DBL5307-5.2)

To test the heat resistance, the test specimens (including comparison samples) were cut to a size of 25 x 25 cm. The test specimens were sprayed in the middle with a size of approx. 2.5 x 2.5 cm with a heat-resistant paint (exhaust paint).

The test specimens were placed on a stainless wire mesh made of tungsten. An infrared source was arranged below the test specimen at a distance of 20 mm from the grate. A Krelus quartz heater with a nominal output of 2KW was used as the infrared heater. The IR emitter was aligned with the test specimen. The temperature of the IR radiator was measured by a first pyrometer in the radiator and set to 459 ° C. A second pyro meter was arranged on the side of the test specimen facing away from the IR radiator, at a distance of 2 cm from the test specimen. The test specimen was irradiated at a temperature of 459 ° C. for 2 hours. The temperature differences between the first and the second pyrometer (heat delta) at the beginning of the two-hour irradiation (Ai) and at the end of the two-hour irradiation (D2) were now determined.

FIRE TEST (standard DBL 5307-5.3)

The firing test was carried out using a BBW kiln from Wazau, Berlin. The test specimens (including the comparative sample) were cut to a size of 56 cm x 16 cm and fixed on a support. The Bunsen burner was lit and left to burn for at least 2 minutes before the test started. The burner was then directed onto the specimen at a distance of 2 cm from the test specimen. The test specimen was exposed to flame for 5 seconds horizontally (ignition test) and 15 seconds horizontally (flammability test).

HEAT RESISTANCE THERMAL OVENS

The respective test specimens (including the comparative sample) were stored standing on a frame at 400 ° C for 1 h in a high-temperature furnace.

RESULTS

Table 1 lists the test results of the individual formulations in the heat resistance test (infrared), in the burning test and in the heat resistance test (thermal oven). Table 2

Heat- A ₁ = 99 ° CD ₂ = 94 ° C & _! = 0 ° CD ₂ = 79 ° CD ₂ = 0 ⁰ CA _! = 109 ^o C resistance A ₂ = 96 ° CD ₂ = 91 ° C Ä ₂ = 0 ° CD ₂ = 61 ° CD ₂ = 0 ° CD ₂ = 107 ° C

IR

Firing test 5 sec: none 5 sec: none 5 sec: none 5 sec: none 5 sec: none 5 sec: no fung

Speak inflammation inflammation inflammation inflammation inflammation inflammation speak

DBL 5307-5

3 15 sec: 15 sec: (firing path 4 15 sec: 15 sec: 15 sec:

no ent no ent cm) no ent no ent no inflammation flame 15 sec: flame; Al flaming; Flame none Ent Powder falls smoke

flame however from lung; Brenn

(Burning path 6 places white

cm)

Heat- no color ^¬ no color ^¬ no color ^¬ no color ^¬ pattern will adhesion aluminum resistant changes ^¬ che changes ^¬ che changes ^¬ che changes ^¬ bilateral film> 1.5 N nity

Thermal insulation; tion; tion; tion; White; in the T-Peel oven

Alupigmente Alupigmente Alupigmente Alupigmente Alupigment Test in adhering to adhering to adhering to adhering to falls off, leaning against sample sample sample strong smoke ^¬ ASTM D 1876 development

The tests show that the test specimens coated with polymer compositions according to the invention perform very well in all three tests. The samples VM2 and VM4 also branched in the IR test

similarly good shielding against the beam temperature of 459 ° C. However, the sample VM2 disintegrated after 15 seconds in the burning test and showed a more decreasing shielding effect during the two-hour test under IR radiation. The pattern VM4 shows good heat and fire resistance, but is achieved by laminating with an aluminum foil, whereby the advantages of the textile structure (flexibility, foldability, gatherability) and the efficiency of the manufacturing process are lost.

Claims

1. Textile heat, fire and / or smoke protection material, comprising a textile, flat substrate which is coated with a polymer composition or is completely or partially impregnated, the polymer composition containing a crosslinked polysiloxane and metal pigments.

2. Textile heat, fire and / or smoke protection material according to claim 1, wherein the crosslinked polysiloxane has side groups, preferably organic side groups, the side groups being independent of one another and preferably being selected from the group consisting of alkyl, aryl -, Hydro gene, hydroxy, alkoxy and combinations thereof.

3. Textile heat, fire and / or smoke protection material according to claim 1 or 2, wherein the polymer composition contains at least one further polymer which is different from crosslinked polysiloxane, preferably at least one further polymer selected from the group consisting of polyacrylate, ethylene -Acrylic acid copolymer, ethylene-methacrylic acid copolymer, styrene-acrylate copolymer, ethylene-vinyl acetate copolymer, acrylate-urethane copolymer, polyurethane copolymer, vinyl chloride-ethylene, vinyl chloride-vinyl acetate, vinyl chloride-vinyl acetate-ethylene copolymer and combinations thereof .

4. Textile heat, fire and / or smoke protection material according to one of the preceding claims, wherein the textile, flat substrate is a fabric, scrim or fleece.

5. Textile heat, fire and / or smoke protection material according to one of the preceding claims, wherein the textile, flat Ge substrate fibers, especially glass fibers or mineral fibers, contains.

6. Textile heat, fire and / or smoke protection material according to one of the preceding claims, wherein the metal pigments are aluminum pigments.

7. Textile heat, fire and / or smoke protection material according to one of the preceding claims, wherein the metal pigments are platelet-shaped or flake-shaped and / or in the area a maximum diameter of 1 to 100 gm, preferably 5 to 45 gm, can be determined by sieve analysis.

8. Textile heat, fire and / or smoke protection material according to one of the preceding claims, wherein the proportion of metal pigments in the polymer composition at least 7% by weight, preferably between 10% by weight and 25% by weight, particularly preferably comprises between 12% by weight and 20% by weight.

9. A method for producing a textile heat, fire and / or smoke protection material, in particular a textile heat, fire and / or smoke protection material according to one of the preceding claims, comprising the steps:

- Providing a textile, flat substrate;

- Applying a preferably aqueous dispersion or emulsion to at least part of the substrate, the dispersion or emulsion containing an emulsified or dispersed silicone resin and metal pigments;

- Hardening the applied dispersion or emulsion to a coating.

10. The method according to claim 9, wherein the dispersion or emulsion is present as a co-dispersion or co-emulsion, additionally comprising a dispersed or emulsified polymer which is different from polysiloxane, preferably a co-dispersion comprising polyacrylates, ethylene-acrylic acid copolymers, ethylene-methacrylic acid copolymer, styrene-acrylate copolymers, ethylene-vinyl acetate copolymers, acrylate-urethane copolymers , Polyurethane copolymer, vinyl chloride-ethylene, vinyl chloride-vinyl acetate, vinyl chloride-vinyl acetate-ethylene copolymer and / or combinations thereof.

11. The method according to any one of claims 9 or 10, wherein the dispersion or emulsion is applied to only one top of the textile, flat substrate.

12. The method according to any one of claims 9 to 11, wherein the solids content of the dispersion or emulsion at the time of the order is over 50% by weight, preferably between 60% and 80%.

13. The method according to any one of claims 9 to 12, wherein the dispersion or emulsion at the time of application has a viscosity of 500 to 40Ό00 mPa s, preferably 1Ό00 to 30Ό00 mPa s, be determinable according to the Brookfield method.

14. The method according to any one of claims 9 to 13, wherein the curing of the dispersion or emulsion substantially by drying and then activating in a temperature range between 100 and 300 ° C, particularly preferably between 120 and 250 ° C and very particularly preferably between 150 and 230 ° C he follows.

15. Use of a textile heat, fire and / or smoke protection material according to one of claims 1 to 8 and / or receives Lich according to a method according to one of claims 9 to 14, as heat protectors in vehicles and as fire and heat protection in buildings.