FI124009B - Fire resistant cable / cable - Google Patents

Description

Fire resistant cable / cable

BACKGROUND OF THE INVENTION Field of the Invention

This invention relates to a wire or cable, and more particularly to a fire-resistant wire or cable having a fire-resistant insulation layer or a fire-resistant outer sheath.

Description of related technology

Flame retardant or flame retardant materials can be used as architectural or decorative materials. The architectural materials disclosed in Taiwan Patents Nos. 583,078 and 397,885 consist essentially of a filler layer which functions as a fire-resistant layer consisting of inorganic materials such as perlite, MgCl 2, MgO, CaCO 3 or cement. In addition, a rigid, fire-resistant laminate may be obtained from flexible substrates of fibrous or nonwoven materials blended with flame retardants, blowing agents and 50 to 80% by weight of inorganic materials.

Flame retardant coatings, which serve as decorative materials and are disclosed in Taiwan Patents Nos. 442,549, 499,469, and 419,514, comprise a combination of foaming and expanding agents, carbonating agents, flame retardants and adhesives that foam and expand, exposed to fire. U.S. Patent No. 5,723,515 discloses a flame retardant coating material comprising a fluid, expandable base material comprising foaming agents, an expanding agent, a carbonizing agent, a binder, a solvent, and a pigment, which improves fracture and shrinkage.

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^ 25 resistance. The blend described in U.S. Patent No. 5,218,027 is ™ prepared from a copolymer or terpolymer, a low modulus polymer and a

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V of the composition of the hydrocarbon elastomer. The flame retardant additive o comprises hydroxide of a Group I, Group II or Group III metal provided that | at least 1% by weight of the composition is in the form of organopolysiloxane.

U.S. Patent No. 6,262,161 relates to filled copolymer compositions of ethylene and / or alpha-olefin / vinyl or vinylidene monomers having improved properties when exposed to flame or ignition sources, and products thereof. The products may be in the form of film, sheet metal, multilayer structure, floor, wall or ceiling coverings, foams, fibers, electrical equipment or wiring and cable installations.

EP-A-10 330 569, JP-A-7 211 153, KR-A-9 201 723B and EP-A-0 029 234 disclose an outer sheath of a wire or cable comprising polyvinyl chloride (PVC). In addition, EP 0 769 789 and US 5 891 571 disclose the mixing of polyvinyl chloride with a calcium, zinc salt, magnesium salt, aluminum salt, phosphate, halogenated plasticizer, aluminum hydroxide, zinc distannate. In addition, JP Patent No. 1,041,112 discloses an outer jacket comprising a copolymer of ethylene-PVC and ethylene-vinyl acetate-PVC.

10 Due to the poor electrical insulation properties of PVC, a new insulation or outer sheath of fire-resistant wire or cable is required. U.S. Patent No. 6,303,681 (B1), U.S. Patent No. 5,166,250, JP Patent No. 2000,191,845, U.S. Patent No. 2006,148,939, and CA Patent No. 2,1010,057 disclose polypropylene (or polyethylene) ) with metal-15 oxide. JP-A-2005 322 474 discloses the blending of EVA and a copolymer of styrene-ethylene-butylene and Mg (OH) 2 to produce an insulating layer or outer sheath of a metal wire. US Patent No. 2005 0 205 290 describes mixing HDPE with borax glass to improve the flame retardant property of a fire resistant conductor. Conventional flame retardant polymer compositions are obtained by physically admixing an organic polymer and an inorganic flame retardant, with binders or surfactants typically incorporated to improve the dispersibility of the inorganic flame retardant. However, since the organic polymer does not react with the inorganic component and forms a well-structured composite by chemical bonding, conventional flame retardant compositions will readily melt, ignite, or produce flammable droplets when exposed to flame or ignition sources.

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BRIEF SUMMARY OF THE INVENTION Fire-resistant wires and cables are provided. Front | The 30-character embodiment of the fire-resistant wire or cable comprises conductor wires and an organic / inorganic composite as an insulating layer or an outer jacket as a layer. In particular, the organic / inorganic composite comprises an organic component and inorganic particles, wherein the organic component has a first reactive, functional group and the organic component comprises a polymer, copolymer or oligomer, and the inorganic particle has a second reactive, functional group. The inorganic organic particles are chemically bonded to the organic component by reaction between the first and second reactive functional groups. In addition, the organic / inorganic composite has been applied to the surface of the conductor wires by dipping or extrusion.

The following embodiments will provide a detailed description with reference to the accompanying drawings.

Brief Description of the Drawings

The invention will be more fully understood by reading the following detailed description and examples with reference to the accompanying drawings, in which: Figure 1 is a schematic figure showing a method of manufacturing a fire resistant outer sheath according to Example 1.

Detailed Description of the Invention

The following description is a preferred way of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and is not to be construed as limiting. The scope of the invention is best defined by the following claims.

In the present invention, inorganic particles having reactive functional groups after or after surface modification are well dispersed in an organic component such as a polymer, monomer, oligomer, prepolymer or copolymer, and reacted therewith for improved flame retardant and mechanical properties. . The organic / inorganic composite may be blended into a suitable continuous phase, depending on the type of organic component, to provide a flame-retardant coating material.

The organic / inorganic composite typically comprises 10 to 90% by weight of an organic component and 90 to 10% by weight of inorganic particles. Preferably, the organic / inorganic composite comprises 30 to 70% by weight of the organic component S and 70 to 30% by weight of the inorganic particles, and more preferably it comprises 40 to 60% by weight of the organic component and 60 to 40% by weight.

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30% by weight of inorganic particles.

Since the organic component and the inorganic particles can be reacted directly by mixing them together to form covalent or ionic bonds, the organic component of the organic / inorganic composite neither melts nor ignites, thus preventing the flame from igniting and spreading.

After combustion, the organic component of the organic / inorganic composite 4 is converted to a carbonaceous layer, and the inorganic particles dissipate heat by radiation heat transfer. Further, since the organic / inorganic composite does not comprise a halide compound, no toxic halogen-containing gas is released during the combustion of the organic / inorganic composite.

The fire-resistant coating material according to the invention is in slurry form. The organic component in the coating material may be a polymer, monomer, oligomer, prepolymer or copolymer, while the organic component in the solidified coating may be an oligomer, polymer or copolymer. For purposes of the invention, the term "polymer" refers to compounds having a number average molecular weight of 1500 to more than 1,000,000 daltons, while "oligomer" refers to compounds having a number average molecular weight of 200-1499 daltons.

[0012] In an organic / inorganic composite, the organic component and the inorganic particles are chemically bonded together by the reaction of the respective reactive functional groups. Reactive functional groups of the organic component and the inorganic particles include, but are not limited to, -OH, -COOH, -NCO, -NH3, -NH2, -NH and epoxy groups. For example, an organic component having -COOH or -NCO groups (eg, organic acid or reactive polyurethane) may be used to react with inorganic particles having -OH groups (eg, metal hydroxide). In addition, the organic component containing the epoxy groups can be used to react with inorganic particles having -NH 2 groups. Alternatively, the organic component having -OH groups (eg, polyvinyl alcohol) may react with the inorganic particles having -COOH or -NCO groups, and the organic component having -NH 2 groups may react with the inorganic particles, containing epoxy groups.

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Organic components suitable for use in the present invention include any monomers, oligomers, monopoly

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Mers, copolymers or prepolymers containing the aforementioned reactants functional groups. Reactive functional groups may be located on the backbone or side chain of the polymer. Preferred organic components are

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g polyorganic acid, polyurethane, epoxy compound, polyolefin and polyamine.

o Polyorganic acid includes homopolymers or copolymers containing carboxylic or sulfonic acids such as poly (ethylene-coacrylic acid) and poly (acrylic-co-maleic acid). Typical examples of the epoxy compounds include bis (3,4-epoxy-6-methylcyclohexylmethyl) adipate, vinylcyclohexene dioxide, diglycidyl tetrahydrophthalate, diglycidylhexahydrophthalate, bis- (2,3-epoxycyclopentyl) ether phenethyl resin epoxy, resin. Suitable polyamines include polyamine and polyimide. Typical pre-5 examples of polyamines are nylon 6 ((NH (CH 2) 5 CO) n), nylon 66 ((NH (CH 2) 6 -NH-CO (CH 2) 4 CO) n) and nylon 12 ((NH (CH 2) n CO) )of). The polyimide includes a diamine such as 4,4-oxydianiline, 1,4-bis (4-aminophenoxy) benzene, or 2,2-bis [4- (4-aminophenoxy) phenyl] propane; and also includes a polyimide synthesized by diamine and dianhydride, such as oxydiphthalic anhydride, pyromellitic acid dianhydride or benzophenone tetracarboxylic acid dianhydride. Suitable polyolefins include copolymers of an olefin monomer and a monomer containing the aforementioned reactive functional groups. It should be noted that the organic component also includes a monomer, an oligomer, a copoly-15 and a prepolymer of the typical polymers described above. Further, the organic components may be used singly or in a mixture of two or more.

Suitable inorganic particles for use herein are those which, initially or after surface modification, have corresponding functional groups which are capable of reacting with the functional groups of the organic component. Preferred inorganic particles include hydroxides, nitrides, oxides, carbides, metal salts and inorganic layered materials. Hydroxides include metal hydroxides such as Al (OH) 3 or Mg (OH) 2. Nitrides include, for example, BN and S13N4. Carbides include, for example, SiC. Metal salts include, for example, CaCC> 3. Inorganic layered materials include, for example, clay, talc, and layered double hydroxide (LDH), where the clay may be smectite clay, vermiculite, halloocyte, sericite, saponite, monmorillonite, beidellite, nontronite, mica. Inorganic particulates

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The box may also be used as a mixture of two or more. For example, acids with reactive functional groups may be used in combination with metal hydroxide. Suitable inorganic particles include microparticulate particles and nanoparticulate particles. Nanoparticulate particles having diameters in the range of 1-100 nm are particularly preferred because the smaller the 00 µ particle size, the larger the surface area per unit weight, and the organic component and inorganic particles can be directly mixed for reaction with covalent or to form ionic bonds, or the reaction may be carried out in various solvents (e.g., water, ethanol or methyl ethyl ketone). The reaction temperature is usually from room temperature to about 150 ° C and the reaction time may vary from 10 minutes to a few days depending on the starting materials used.

The fire-resistant coating material 5 according to the invention has a wide application range. For example, it is suitable as a fire-resistant material for coating interior structures and structural steel. In addition, it can be used as a coating material for cable sheaths, conductive sheaths or foaming materials. Fire-resistant coating material can also be used on surfaces of flammable objects in vehicles such as airplanes, ships, cars and trains. Thus, various additives may be incorporated by those of ordinary skill in the art depending upon the particular application. For example, a flame retardant such as melamine phosphates, red phosphorus, and a phosphorus based flame retardant may be present to improve fire protection. A silane (such as TEOS or TEVS) or siloxane may be present to enhance structural integrity and facilitate curing. Glass sand and fiberglass may be present to improve heat resistance and strengthen structural integrity. The amount of these additives is typically in the range of 0.1 to 20 parts by weight per 100 parts by weight of the organic / inorganic composite.

In one embodiment of the invention, the organic / inorganic composite is applied to the surface of the conductor wires by dipping or extrusion to provide a fire-resistant wire or cable, such as a power line, a computer cable, or a communication cable. Because the organic component and the inorganic particles are chemically bonded (as compared to conventional physically mixed products), the flame-retardant composite of the invention will not melt, ignite or produce flammable droplets when exposed to flame or ignition sources. The flame retardant property of the Pa-5 long-lasting wire or cable is sufficient flame

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^ retarding feature to pass the UL 1581 vertical conductor v flame test VW-1.

[0018] In some embodiments of the invention, the fire-resistant conductor | or the cable may comprise an organic / inorganic composite as an insulating layer covering the wires and an outer sheath such as PVC or nylon

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g organic / inorganic composite. In some embodiments of the invention, the fire resistant cable or cable may comprise an insulating layer such as 00 35 PE or PP covering the conductor wires and an organic / inorganic composite as an outer sheath covering the insulating layer. More specifically, the insulating layer 7 and the outer sheath layer may be formed in batches and co-extruded simultaneously.

Example 1

300 g of polyethylene-coacrylic acid (15 wt% acrylic acid-5 pola) was charged to the reactor, preheated to 110-120 ° C and stirred at 300 rpm. 324.0 g deionized water and 324.0 g aqueous ammonia were added to the reactor to give a white emulsion after stirring for 10 minutes. Thereafter, 300 g of aluminum hydroxide powder was added to the rector to give a white slurry after 10 minutes of mixing. As shown in Figure 10, slurries 200 of 0.25 mm thickness, 0.53 mm thickness and 1.02 mm thickness were applied separately in a container 400 to the surface of copper wire 100 (size: 14AWG / 3G) to form an outer sheath layer 300 and placed then oven, dried at 60 ° C for 60 minutes, 80 ° C for 60 minutes, 100 ° C for 60 minutes, 120 ° C for 30 minutes, 140 ° C for 30 minutes and finally poured at 160 ° C. for 240 minutes.

Upon complete cure of the resulting fire-resistant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 1. In no case did the outer / shell layers of organic / inorganic composites light up or burn (or attached to the top of the specimen). In addition, the burning waste dripped from the sample did not ignite the cotton on the bottom so that it passed the VW-1 flame test for UL1581 vertical wire.

Thus, since the organic / inorganic composite comprises a reactive product obtained by bonding polyethylene-coacrylic acid

25 -COOH functional group -OH for aluminum hydroxide powder

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with the ^ group, a fire-resistant wire or cable with an organic / non-organic composite as an insulating layer or outer sheath had been improved

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V retardant, o

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Table 1 8

Thickness No. Afterburning for every 15 Flag- Cotton Rating municipal flame alignment frozen? lights up? keen

Flame duration recorded ___ recorded in seconds ______ 0.25+ 1. 2. 3. 4. 5. yes / no yes / no Pass-through 0.05 _________ see__head mm 1 No No No No No No__ No__X__ 2 No No No No No No No __3 No No No No No No__ No__X__ After burning every 15 se- Flag Cotton Rating municipal flame alignment frozen? lights up? keen

Flame duration recorded in ___ recorded in seconds ______ 0.53+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No No No No No No__________ 2 No No No No No No__________ No No No No No No__no__X__ Afterburner for every 15 Flag- Cotton Rating municipal flame alignment frozen? lights up? keen

Flame duration recorded ___ recorded in seconds____ 1.02 ± 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No No No No No No No______X__ 2 No No No No No No No No__X__ __3 No No No No No No_________ Example 2 o ™ 300 g of polyethylene-coacrylic acid (15% by weight of acrylic acid).

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V a) was charged to the reactor, preheated to 110-120 ° C and then stirred at 300 rpm. Thereafter, 300 g of aluminum hydroxide powder was added to the reactor to give a white slurry after stirring for 10 minutes.

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The white slurry was fed to an extruder and copper wires (size: 14AWG / 3G) having an 'outer layer of 0.2 mm thick, 0.5 mm thick and 1 mm thick, were co-extruded at 130 ° C. and then placed in an oven, dried at 60 ° C for 60 minutes, at 80 ° C for 60 minutes, at 100 ° C for 60 minutes, at 120 ° C for 30 minutes, at 140 ° C. minutes and finally cast at 160 ° C for 240 minutes.

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Upon complete cure of the resulting fire-resistant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 2. In no case did the outer / shell layers of the organic / inorganic composites light up or burn (5 attached to the top of the specimen). In addition, the burning waste dripped from the sample did not ignite the cotton on the bottom so that it passed the VW-1 flame test for UL1581 vertical wire.

Thus, since the organic / inorganic composite comprises a reactive product obtained by bonding polyethylene-coacrylic acid 10 with aluminum hydroxide powder, a fire-resistant wire or a cable having an organic / inorganic composite as an insulating layer or outer sheath, the flame retardant was improved.

Table 2

Thickness No. Afterburn for every 15 Flag- Cotton Rating after municipal flame alignment is lit? lights up?

Flame duration recorded in ___ registered in seconds ______ 0.2+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No No No No No No no__ no__X__ 2 No No No No No No No__X__ __3 No No No No No No__no__X__ After burning every 15 se- Flag Cotton Rating after municipal flame alignment returns? lights up?

Flame duration recorded in ___ seconds ______ 0.5 + 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header £ 2 mm 1 No No No No No no__ no__X__ g 2 No No No No No No__no__X__ cg__3 No No No No No No No__no__X__ V Afterburn each 15 Flag- Cotton Classification o After the flame is applied, is it lit? lights up? x Flame duration recorded ___ in seconds ______ ^ 1.0+ 1.2.3.4.5. yes / no yes / no Passes no pass "0.05 __________ header ^ mm 1 No No No No No No no No No__X__ ° 2 No No No No No No No No No No No No No X No __3 10

Example 3

300 g of polymaleic acid-coacrylic acid was charged to the reactor, preheated to 110-120 ° C and then stirred at 300 rpm. Thereafter, 300 g of magnesium hydroxide powder was added to the reactor to give a white slurry after stirring for 10 minutes. After cooling, the white slurry turned to a yellow solid. The yellow solid was fed to an extruder and copper wires (size: 14AWG / 3G) with 0.2 mm thick, 0.5 mm thick and 1 mm thick outer jacket layer were prepared by co-extruding at 130 ° C and placed then oven, dried at 60 ° C for 60 minutes, at 80 ° C for 60 minutes, at 100 ° C for 60 minutes, at 120 ° C for 30 minutes, at 140 ° C for 30 minutes and finally poured at 160 ° C. for 240 minutes.

Upon complete cure of the resultant fire resistant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 3. In no case did the outer / outer layers of organic / inorganic composites ignite and the flags attached to the top of the specimen In addition, the burning waste dripped from the sample did not ignite the cotton on the bottom so that it passed the VW-1 flame test for UL1581 vertical wire.

Thus, since the organic / inorganic composite comprises a reactive product obtained by bonding the polymaleic acid-coacrylic acid with magnesium hydroxide powder, a fire-retardant wire or a cable having an organic / inorganic composite as an insulating layer or an outer sheath, .

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Table 3

Thickness No Afterburning every 15 seconds- Flag Cotton Rating after flame alignment lit? lights up?

Flame duration recorded in seconds 0.2+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 passes mm 1 No No No No No No no__ no__X__ 2 No No No No No no____________ No No No No No No no__no__X__ After burning every 15 seconds, after the flame has been applied, does the Cotton Classification come back? lights up?

Flame duration logged in ___in seconds ______ 0.5+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 passes

mm 1 No No No No No No No X

2 No No No No No No No No__ No__X__ __3 No No No No No No No No__X__ After every 15 seconds the Flag Cotton rating is lit after the flame is applied? lights up?

Flame duration logged in ___in seconds_______ 1.0+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ passes mm 1 No No No No No no__no__X__ 2 No No No No No No__no__X__

3 No No No No No No No X

Example 4

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500 g reactive polyurethane (with 8% -NCO groups)

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. was charged to the reactor and then stirred at 300 rpm. 500 g of aluminum hydroxide powder was added to the reactor to give a white slurry after 5 minutes of stirring. The sludge in the tank was applied separately at 1.04 mm | thickness, 2.15 mm thickness, and 2.97 mm thickness for dipping copper wires (size: 14AWG / 3G) and then placed at room temperature 24

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g for hours.

Upon complete cure of the resulting flame-retardant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 4. In no case were the outer / outer layers of organic / inorganic composites ignited or adhered ( to the top of the sample), ignited or burned. In addition, the burning waste dripped from the sample did not ignite the cotton on the bottom so that it passed the VW-1 flame test for UL1581 vertical wire.

Thus, since the organic / inorganic composite comprises a reactive product obtained by bonding the -NCO functional groups of the reactive polyurethane with the functional OH groups of the aluminum hydroxide powder, a fire-retardant wire or cable containing the organic / inorganic composite or as an outer sheath, was an improved flame retardant.

Table 4

Thickness No. Afterburn for every 15 Flag- Cotton Rating after municipal flame alignment is lit? lights up?

Flame duration recorded ___ recorded in seconds ______ 1.04 + 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No No No No No No_________ 2 No No No No No No_________ No No No No No No__no__X__ After burning every 15 se- Flag Cotton Rating after municipal flame alignment returns? lights up?

Flame duration recorded ___ recorded in seconds ______ 2.15+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No No No No No No_________ 2 No No No No No No_________ No No No No No No__no__X__ g Afterburner for every 15 seconds- Flag Cotton Rating ^ after the municipal flame has been exposed? lights up? ^ Flame duration recorded 4- 4-___ in seconds ______ ° 2.97+ 1. 2. 3. 4. 5. yes / no yes / no Passes no more than 0.05 __________ header mm 1 No No No No No No No__X__

ra 2 No No No No No No No X

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o 3 No No No No No No No X

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Example 5

500 g of reactive polyurethane (with 8% -NCO groups) dissolved in 300 g of DMAC were charged into the reactor and then stirred at 300 rpm. 500 g of aluminum hydroxide powder was added to the reactor to give a white slurry after 5 minutes of stirring. The slurries in the tank were applied separately by dipping the copper wires (size: 14AWG / 3G) at a thickness of 0.21 mm, a thickness of 0.49 mm and a thickness of 0.98 mm. After drying the copper wires with slurry for 24 hours, they were placed in an oven at 105 ° C for 24 hours.

Upon complete cure of the resultant fire resistant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 5. In no case did the outer / outer layers of organic / inorganic composites ignite and the flags (attached to the top of the specimen) . In addition, the drip-15 burning waste from the sample did not ignite the cotton on the bottom so that it passed the UL1581 vertical wire flame test VW-1.

Thus, since the organic / inorganic composite comprises a reactive product obtained by bonding the -NCO functional groups of the reactive polyurethane with the -OH groups of the aluminum hydroxide powder, a fire-resistant wire or cable having an organic / inorganic composite as an insulating or as an outer jacket, had an improved flame retardant capability.

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Table 5 14

Thickness No Afterburning every 15 seconds- Flag Cotton Rating after flame alignment lit? lights up?

Flame duration recorded in seconds 0.21 ± 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 passes mm 1 No No No No No No no no No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No no__no__X__ After burning every 15 seconds, after the flame has been applied, does the Cotton Classification come back? lights up?

Flame duration logged in ___in seconds_______ 0.49+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 passes

mm 1 No No No No No No No X

2 No No No No No No No No__ No__X__ __3 No No No No No No No No__X__ After every 15 seconds the Flag Cotton rating is lit after the flame is applied? lights up?

Flame duration logged in ___in seconds_______ 0.98+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ passes mm 1 No No No No No no______X__ 2 No No No No No No__no__X__

3 No No No No No No No X

Example 6

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500 g reactive polyurethane (with 8% -NCO groups)

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. was charged to the reactor and then stirred at 300 rpm. To the reactor was added 450 g of magnesium hydroxide powder and 50 g of modified nano-clays containing -OH functional groups to give after 5 minutes of stirring | white slurry. The slurries in the tank were applied separately to copper wires of 1.10 mm thickness, 2.26 mm thickness and 2.95 mm thickness (size:

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g 14AWG / 3G) by dipping and then placed at room temperature for 24 hours. After the resulting fire resistant wire had completely cured, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 6. In no case are organic / inorganic the outer shell layers of the composites did not light up, nor did the flags (which were attached to the top of the sample) ignited or burned. In addition, the burning waste dripped from the sample did not ignite the cotton on the bottom so that it passed the VW-1 flame test for UL1581 vertical wire.

Thus, since the organic / inorganic composite comprises a reactive product obtained by bonding the -NCO functional groups of the reactive polyurethane with the magnesium hydroxide powder and the -OH functional groups of the clay, a fire-resistant wire or cable containing an organic / inorganic composite as an insulating layer or outer sheath, was a flame retardant flame retardant feature.

Table 6

Thickness No. Afterburn for every 15 Flag- Cotton Rating after municipal flame alignment is lit? lights up?

Flame duration recorded ___ recorded in seconds ______ 1,10+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No No No No No No No No__X__ 2 No No No No No No No No__X__ __3 No No No No No No__no__X__ After burning every 15 se- Flag Cotton Rating after municipal flame alignment returns? lights up?

Duration of flame recording ___ recorded in seconds ______ 2.26 ± 1.2.3.4. 5. Yes / No Yes / No Pass Not Pass 0.05 __________ Head mm 1 No No No No No No No__________ No No No No No No__ No__X__ __3 No No No No No No__no__X__ g Afterburn each 15 Flag- Cotton Rating ^ municipal flame alignment after the return? lights up? ^ Flame duration recorded 4- 4-___ in seconds ______ ° 2.95+ 1. 2. 3. 4. 5. yes / no yes / no Pass Not within 0.05 __________ header mm 1 No No No No No No________

ra 2 No No No No No No No X

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o 3 No No No No No No No X

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Example 7 16

500 g of reactive polyurethane (with 7.6% -NCO groups) was charged into the reactor and then stirred at 300 rpm. 450 g of modified titanium dioxide powder and 50 g of modified clay containing 5 functional -OH groups were added to the reactor to give a white slurry after 5 minutes of stirring. The slurries in the tank were separately applied at 0.7mm thickness, 1.46mm thickness and 2.00mm thickness by dipping copper wires (size: 14AWG / 3G) and then placed at room temperature for 24 hours and set at 80 ° C: in the oven for 24 hours.

Upon complete curing of the resulting fire-resistant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 7. In no case did the outer / outer layers of the organic / inorganic composites ignite and the flags . In addition, the drip-15 burning waste from the sample did not ignite the cotton on the bottom so that it passed the UL1581 vertical wire flame test VW-1.

Thus, since the organic / inorganic composite comprises a reactive product obtained by linking reactive polyurethane functional -NCO groups with modified titanium dioxide powder and clay functional -OH groups, a flame-retardant wire or cable containing an organic / inorganic composite as an insulating layer or outer sheath, was an improved flame retardant property.

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Table 7

Thickness No. Afterburn for every 15 Flag- Cotton Rating after municipal flame alignment is lit? lights up?

Flame duration recorded in seconds 0.70+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 header mm 1 No No No No No no__ no__X__ 2 No No No No No no__ no__X__ __3 No No No No No No__no__X__ After burning every 15 se- Flag Cotton Rating after municipal flame alignment returns? lights up?

Flame duration recorded ___ recorded in seconds ______ 1.46 + 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 headers

mm 1 No No No No No No No X

2 No No No No No No No No__ No__X__ __3 No No No No No No__ No__X__ After burning every 15 sec- Flag Cotton Classification after municipal flame exposure returns? lights up?

Flame duration recorded ___ recorded in seconds ______ 2.00+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No No No No No No No No__X__ 2 No No No No No No No__X__

3 No No No No No No No X

Comparative Example 1

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500 g reactive polyurethane (with 7.6% -NCO groups)

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. was charged to the reactor and then stirred at 300 rpm. To the reactor was added 500 g of silica heated to 80 ° C for 6 hours to give a white slurry after stirring for 5 minutes. The sludge in the tank was spread individually 0.72mm thick, 1.31mm thick and 2.01mm thick for copper wires (size: 14AWG / 3G) by dipping and then placed

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g at room temperature for 24 hours, placed in an oven at 80 ° C for 24 hours and finally poured at 25 ° C for 72 hours.

Upon complete cure of the resulting fire-resistant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 8. In all cases, the outer / outer layers of organic / inorganic composites ignited and the flags (attached to the top of the specimen) . The experiment was considered unsuccessful. In addition, the burning waste from the sample ignited the 5 cotton placed around the sample.

Thus, since the -OH functional groups on the silica were removed by heating for 6 hours at 80 ° C, there was not enough reaction of the -OH groups with the -NOO functional groups of the reactive polyurethane. Thus, in Comparative Example 1, the outer sheath of the fire-resistant conductor 10 does not comprise the organic / inorganic composite disclosed herein and has a poor flame retardant property.

Table 8

Thickness No. Afterburn for every 15 Flag- Cotton Rating after municipal flame alignment is lit? lights up?

Flame duration recorded in seconds 0.72+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 head mm 1 No 120 (fully burned) __ yes__ no ___ X_ 2 82 (fully burned) __ yes__ yes ___ X_ __3 66 (fully burned) __ yes__ no ___ X_ Afterburner after every 15 Flag- Cotton rating after municipal flame exposure is on? lights up?

Flame duration recorded ___ recorded in seconds ______ 1.31+ 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 header co mm 1 No 94 (fully burned) __ yes__no ___ X_

o 2 88 (fully burnt) yes yes X

(- (j__3 76 (fully burned)) __ yes__ yes ___ X_ T After burning every 15 sec- Flag Cotton Rating o After the flame has been applied, lights up? x Flame duration time register-

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___ in seconds ______ ^ 2,01+ 1. 2. 3. 4. 5. yes / no yes / no Passes through 0.05 header r ». ---------- o mm 1 No 88 (fully burnt) __ yes__ yes ___ X_

00 2 No 116 (fully burnt) yes no X

__3 97 (fully burned) __ yes__ yes ___ X_

Comparative Example 2 19

500 g of polyurethane (without -NCO groups) was charged into the reactor and then stirred at 300 rpm. 500 g of aluminum hydroxide powder was added to the reactor to give a white slurry after stirring for 5 minutes. The slurries in the tank were separately applied at 0.52mm thick, 1.17mm thick and 1.88mm thick by dipping copper wires (size: 14AWG / 3G) and then placed in an oven, dried at 60 ° C for 120 min. minutes, 80 ° C, 120 minutes, 100 ° C, 120 minutes, and finally cast at 120 ° C for 360 minutes.

Upon complete curing of the resulting fire-resistant wire, it was subjected to the UL 1581 vertical wire flame test VW-1, the results of which are shown in Table 9. In all cases, the outer / shell layers of the organic / inorganic composites ignited and the flags The experiment was considered unsuccessful. In addition, the burning waste from the 15 samples ignited the cotton placed around the sample.

Thus, since the polyurethane has no -NCO functional groups, there were no functional groups reacting with the -OH groups of the aluminum hydroxide powder. Thus, in Comparative Example 20, the outer sheath of the fire-resistant conductor does not comprise the organic / inorganic composite disclosed herein and has a poor flame retardant property.

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Table 9 20

Thickness No. Afterburn for every 15 Flag- Cotton Rating after municipal flame alignment is lit? lights up?

Flame duration recorded in seconds 0.52 ± 1.2.3.4. 5. Yes / No Yes / No Pass Not Pass 0.05 mm mm 1 No 79 (fully burnt) __ yes__ yes ___ X_

2 84 (fully burnt) yes yes X

__3 80 (fully burned) __ yes__ no ___ X_ After burning every 15 se- Flag Cotton Rating after municipal flame alignment is on? lights up?

Flame duration recorded ___ recorded in seconds ______ 1.17+ 1. 2. 3. 4. 5. yes / no yes / no Passes no more than 0.05 headers

mm 1 No 114 (fully burnt) yes yes X

2 96 (fully burnt) yes yes X

__3 82 (fully burned) __ yes__ yes ___ X_ After burning every 15 se- Flag Cotton Rating after municipal flame exposure is on? lights up?

Flame duration recorded ___ recorded in seconds ______ 1.88 + 1. 2. 3. 4. 5. yes / no yes / no Passes no 0.05 __________ header mm 1 No 83 (fully burned) __ yes__no ___ X_

2 88 (fully burnt) yes yes X

3 97 (fully burnt) yes yes X

Although the invention has been described by way of example and with respect to a preferred embodiment, it should be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements

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V 5 (which would be obvious to those skilled in the art). Accordingly, the broad scope of the appended claims should be construed to include all such modifications and similar arrangements.

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Claims (6)

1. Fire-resistant cable or cable, comprising: conductor trees; and organic / inorganic composite as insulating layer or outer shell layer; comprising an organic component having a first reactive functional isocyanate group, said organic component comprising a polymer, a copolymer or an oligomer; inorganic particles having a second reactive functional hydroxyl group; Wherein the inorganic particles are dispersed and chemically bonded to the organic component by a reaction between the first and second reactive functional groups and wherein the inorganic particles are metal hydroxide. A fire-resistant conduit or cable according to claim 1, wherein the organic / inorganic composite comprises 10-90% by weight of the organic component and 90-10% by weight of the inorganic particles. 3. Fire-resistant conduit or cable according to claim 1, wherein the organic / inorganic composite comprises 30-70% by weight of the organic component and 70-30% by weight of the inorganic particles. The fire-resistant conduit or cable of claim 1, wherein the organic component comprises polyolefin copolymers with isocyanate groups. The fire-resistant conduit or cable of claim 1, wherein the metal hydroxide comprises AI (OH) 3 or Mg (OH) 2. 6. Fire-resistant conduit or cable according to claim 1, wherein the organic / inorganic composite is widespread on the conductor wires by wetting or extrusion. C \ J C \ l O X IX CL 00 o o o CM