WO1980002086A1 - Mastique de protection contre le feu et dispositif d'arret d'incendie - Google Patents

Mastique de protection contre le feu et dispositif d'arret d'incendie Download PDF

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Publication number
WO1980002086A1
WO1980002086A1 PCT/US1979/000160 US7900160W WO8002086A1 WO 1980002086 A1 WO1980002086 A1 WO 1980002086A1 US 7900160 W US7900160 W US 7900160W WO 8002086 A1 WO8002086 A1 WO 8002086A1
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WO
WIPO (PCT)
Prior art keywords
mastic
fire
cables
solids
water
Prior art date
Application number
PCT/US1979/000160
Other languages
English (en)
Inventor
J Pedlow
Original Assignee
J Pedlow
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by J Pedlow filed Critical J Pedlow
Priority to PCT/US1979/000160 priority Critical patent/WO1980002086A1/fr
Priority to JP50158479A priority patent/JPS56500341A/ja
Priority to CA324,164A priority patent/CA1115450A/fr
Publication of WO1980002086A1 publication Critical patent/WO1980002086A1/fr
Priority to EP19790901244 priority patent/EP0025433A4/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0406—Details thereof
    • H02G3/0412—Heat or fire protective means
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C09D5/185—Intumescent paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/34—Filling pastes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/04—Sealing to form a firebreak device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings

Definitions

  • This invention relates to a fire protective mastic and fire stop for electrical cables and neighboring wall junctures or partitions through which the cables pass, the mastic comprising protective water vapor-evolving substances, other substances which intumesce or expand, and still others which glaze with sufficient heat and form a stable protective porous coating having a fused ceramic casing upon the electric cables and fire stop panels, when exposed to fire.
  • the mastic is also useful as a precast boot for mounting upon cables or splices, or as an air and fire seal or caulk disposed upon or between cables, the mastic filling cracks or crevices between cables or panels and cables, and serves as a coating upon fire stop panels and upon neighboring walls, and for wall paneling per se through which electric cables pass as a fire protective wall and in which the paneling or boot per se may be formed of the precast dry mastic.
  • Such coatings in contrast to the present fail to adequately meet the important fire and heat insulating needs to prevent destruction of cable jacketing and insulation-protecting critical power and multiple conductor control cables and to prevent propagation of fire along grouped cables in trays and through wall and floor pentrations at flaming temperatures often exceeding 1,900°F.
  • the mastic hereof contains large quantities such as 60 to 85% of a mixture of solids of several types, each with a distinct function to provide in combination a superior fire protective effect.
  • the solids are formed into a mastic by a binder resin dispersed in water in quantity to form a coherent coating when dry, whereby the solids and the disper ⁇ sion may be evenly mixed. Additional quantities of aqueous diluent may be added in the mixing, for conversion of the dispersion of resins and dry solids to a trowelable, coatable or even sprayable composition, as needed to provide the requisite fluidity for application.
  • Some of the solids include intumescing or decrepitating substances, typically cenospheres, which are fly-ash, inorganic particles evolved as dust from coal combustion and are very light, volatile and expandable with heat, like tiny fused ballons. It is that expansion of such gas evolving substances in combination with other vapor producing substances mixed therewith which, when the composition is heated under fire exposure at temperatures above about 1,000oF to activate the intumescing components and release vapors which convert the composition from a thin layercoating on a cable or panel to its expanded heat insulating form.
  • intumescent solids are present in the range of 5-40%, preferably about 7-25%.
  • compositions are of a chemical hydrate character, having chemically or physically combined water, such as hydrous oxides, silicates and other hydrated substances which firmly bond the water and which decompose with the heat of a fire and evolve large quantities of cooling, non-corrosive oxygen displacing and fireprotective water vapors.
  • hydrous oxides are typically hydrous alumina, magnesia and the other water evolving hydrous oxides and silicates.
  • These hydrated components are used in quantity of 10 to 40% and preferably in quantity of 15 to 30%.
  • Still other solids in the mastic comprise a heat fusible ceramic frit which, when heated sufficiently upon an outer surface of the expanded coating, exposed to hi gh fire developed heat, glaze over and encase the expanded dry mastic as a fire protective film thereon, protecting the expanded coating and insulating the cables, or in or upon the fire stop panels or boots.
  • Such frit generally is a low fusible glass, typically a borosilicate glass frit generall y fusible in the range of about 700° to 1,500oF. It is usefully used in the range of about 5 to 40%, and preferably about 10 to 25%.
  • the composition includes a thermoplastic resin as a binder dispersed in water, the aqueous dispersion being mixed evenly with said solids to form the mastic .
  • the thermoplastic resin is present in quantities sufficient to form a flexible binder for the mastic composition when dry, as a coating upon the electrical cables or panels, or to bind the panels or boots upon drying into a strong structural form. Sufficient additional water is added in the mixing as stated, for supplying requisite fluidity for application.
  • the resinous solids are present in the quantity of about 15 to 40% of the dry composition, preferably 20 to 30%.
  • Such thermoplastic substances may be any useful thermoplastic binder resin, which is halogen-free, but which may melt and flow by heat developed during fire and allow the composition to expand to a heat insulating coating.
  • the typical resins for this purpose are halogen-free to avoid decomposition and release of noxious and corrosive halogen gases, and may be typically polyvinyl acetate, polyacrylic acid, polyacrylic lower alkyl esters, such as methyl or ethyl esters thereof, polymethacrylic acid and its lower alkyl esters, such as methyl and ethyl esters thereof, as well as mixtures of such acrylic resins, natural and artifical rubber latices, each as dispersions in water, said dispersions usally having from 25 to 75% of resin solids there in, usually 45 to 65% resin solids, the balance being water with minor quantities of dispersing agents.
  • the composition further includes small quantities of combustible fiber, such as cotton, rayon, aramide or the like, to provide a temporary coating stability for the wet or molten mastic.
  • the fiber need not be fire proof and may burn as the composition becomes heated when exposed to fire and will only be used in minor quantity, generally less than 5%, usually 0.5 to 2.0% to supply this, temporary binding function.
  • the composition will further contain among the solids, such fire retardant substances as antimony oxides, which develop vapors with heat along with the protective water vapors evolved. Antimony oxide also is a low fusible component and contributes to the formation of the fused frit casing during fire exposure.
  • Another fire retardant solid is zinc tetraborate which, through synergistic action, further improves the fire-retardant character of antimony oxide in the mixture.
  • These fire retardant antimony oxides and zinc tetraborates are each used in quantity of 2 to 15%, preferably 4 to 10% and 5 to 10% respectively.
  • solids may consist of emulsifying agents, typically Triton X 100, such as octylphenyl-polyethoxy ethanol, in quantity of about 0.5 to 5%.
  • Rust inhibitors generally in quantity of about 0.2 to 5%, such as potassium polyphosphoric acid esters.
  • Preservatives such as fungicides, which are mercury complexes, in quantity of about 0.01 up to about 0.05.
  • Viscosity controlling agents such as alkali metal salts of polycarboxylic acid or oil based liquid polysiloxanes in quantity of 0.2 to 5%.
  • Thickeners such as hydroxy ethyl cellulose and a clay type inorganic gelling agent, such as attapulgite clay in quantity of 0.1 to2%. These several minor additive components for these functions are used in quantity sufficient for the stated function, and each generally will be present in quantity of less than 10%, and usually from 0.2 to 2%.
  • halogenated resins as release halogen, typically chlorine, such as polyvinyl chloride or numerous halogenated plasticizers as also are commonly used in the fire proofing art and whose destruction and release by heat during cable failure, as by arcing, short circuitry or destruction by fire from other sources in the neighborhood of the cables and protectively coated with such fire proofing substances, as release halogen, are avoided, whereby the composition hereof releases no noxious and corrosive halogen gases.
  • the binder emulsion of resin in water is further mixed with the dry intumescing and fire proofing solids, and reduced with a small additional quantity of water as needed to homogeneously mix the filler solids and emulsion for application.
  • the mastic dries and sets by evaporation, at thicknesses of 1/2" to 11/2" thick flexible coating on the electrical cables and wall panels forming a heat insulating and fire proofing mastic as well as an effective heat insulating air seal and fire stop in panel form at interrupting walls through which the cables pass.
  • the mastic hereof is intended both as moldable mixture for forming into fire proofing boots to be installed upon cable joints and splices or on dry wall panels through which electrical cables may pass, or as a thick suspension in water to be applicable as a protective mastic filler and coating body upon and about a group of cables, entering, leaving and passing through a floor slab or fire wall, which may be formed of such or other fire protected wall panels.
  • the panels can also be formed as a laminate of rigid panel board such as ceramic fiber, gypsum or Transite, having such mastic coat applied and dried upon one or both surfaces thereof.
  • Fig. 1 shows a perspective of groups of mastic covered cables passing through a wall which may be protected by the fire stop paneling and mastic hereof;
  • Fig. 2 is an elevation of several trays of cables arranged in a vertical tier as they will pass through a fire wall protected by the paneling hereof;
  • Fig. 3 is a detail showing the mastic as an outer lamina layer upon a conventional heat resistant wall board base
  • Fig. 4 is a detail showing the mastic poured about cables passing through a floor opening
  • Fig. 5 illustrates a detail of a conduit carrying cables which is filled with mastic
  • Fig. 6 shows a section of a mastic coated cable.
  • a wall 10 of concrete or masonry separates spaces A and B as a partition for normal structural purposes and has a rectangular opening 12 cut therein for passage of a tier of trays 14 and 16 which support and partially enclose electrical cables 18.
  • These cables are conventional groups of power or multiple conductor control cables mounted, insulated and jacketed for purposes of electrical insulation and moisture imperviousness. Thus the cables may carry critical communication circuitry or conduct electrical power, ofttimes of high voltage.
  • any building construction has many cables as a valuable part thereof and, for whatever electrical purpose they serve, great damage can be done to the structure and cables by electrical faults, such as short circuitry or extraneously caused fire, such as by exposed to flaming combination of oil, trash or the like, developing destructive heat in the cables.
  • electrical faults such as short circuitry or extraneously caused fire, such as by exposed to flaming combination of oil, trash or the like, developing destructive heat in the cables.
  • the cables themselves are valuable in terms of the numerous communicating conductors and the redundant circuits which must be provided, as well as importance of wires which may be a part of the cables per se, all being desirable protected.
  • the coating hereof effectively protects cables longitudinally or vertically against propagation of any fire, regardless of source, so that fire cannot damage redundant control and power circuits and penetrade into critical control areas.
  • a further set of wall panels 26, 28 are mounted each with cut-away portions (not shown) to fit over the cables and close the wall opening 12, as well as to closely close any spaces between cables passing through the wall.
  • the cables pass directly through or themselves may each be enclosed in a supporting heat resistant metal sleeve or conduit tube (not shown). It is sometimes desirable to cover the interstices between the cables with loosely matted inorganic fiber which forms a filler for large spaces directing and supporting the mastic to close engagement with the cables and for allowing an overall coating as a bed of cables.
  • the mastic itself may be supplied alone to fill the space between the cables through the entire depth above the lower panel 24 up to a point above the surfaces of the cables as shown in Fig. 1, whereby, the cables become fully embedded within the dried mastic.
  • the mastic can be sprayed over the grouped cables as a 1/8" minimum thickness coating.
  • the mastic 30 is extended to cover the paneling 26, 28 and to fill all of the cracks and crevices therein, whereby the cables pass through the paneling and through the opening 12 of the wall 10, each crack, opening or space being filled with mastic. It may also be applied within conduit carrying cables to fill or plug the same as shown in Fig. 5. Moreover, the mastic is applied over the top of the cables and for secure closure of any cracks between panels, both around the panel edges as well as any spacing or cracks between the adjacent panels.
  • two trays of cables pass through the wall 10 with the construction described.
  • the cables may be present in any number and arranged in the trays in any grouping.
  • Additional cables may be passed through the wall of that construction by cutting through the light precast panels, cutting away some of the mastic and penetrating through the panel in a circular cut in a manner to accommodate one or more additional cables to be added from time to time, and the new cable being readily thrust through a newly formed cut portion.
  • the newly added cables are coated with more fresh mastic and any cracks or crevices remaining about the newly added cables in the panels are further coated and sealed with more mastic, whereby additional cables are easily added from time to time.
  • trays can be assembled in a tier of trays passing to or through the wall, depending upon the wall size according to the size and height needed above the floor 32, whereby two stacks or more trays as may be needed to accommodate all of the cables can be used.
  • the separate stacks of cables C and D may be further separated by a partitioning wall 34, in which larger panels of the mastic hereof are assembled as a separating partition 34 and the partition may be supported as shown by angle iron brackets 36. It may be useful to separate the panels by a central laminated layer 38 which may be of metal wire or glass fiber or other reinforcing material.
  • the fire stop wall may be formed of fire proof paneling material, resistant to heat, whereby to operate as a fire-protective shield or partition between the opposite wall sides of spaces, as an easily assembled fire stop partition through which a group of cables pass, whereby the protective wall prevents heat and flame transfer, as well as the transfer of noxious vapors or smoke to its opposite wall side where continuing or redundant circuits may be Installed.
  • the fire stop wall is intended to prevent transfer of heat, to the wall side opposite to that facing fire exposure and remains relatively cool on the opposite wall side from the high temperatures that may develop from a cable failure.
  • the paneling may be formed of other useful pre-cast fire proof materials, but often is of the same dried mastic material as the mastic, also being applied as a coating upon the cables hereof, the mastic being cast into panels for assembly as dried panels in the fire stop wall hereof.
  • Fig. 3 illustrates a panel board which can be of any commercial ceramic fiber rigid insulating board 40 and which has coated thereon a thin 1/8 to 1/4" coating 42 of the mastic hereof.
  • cables disposed as groups or individual cables in sleeves are mounted pass through a floor slab 10 with the mastic hereof poured about and with the sleeve to form an air seal as well as a fire stop.
  • Fig. 5 shows the detail wherein a conduit which may penetrate a wall or floor, and carrying one or more cables is filled with a mastic, applied by caulking or troweling.
  • the present composition Is highly heat and fire protective. It evolves only non-corrosive vapors, such as water vapors, antimony oxides and zinc tetraborate. It produces a porous heat expanded heat insulating body protective of the cable when destructive heat is applied, the coating, being developed by expansion of the intumescent substances and evolving gases, which convert the coating to an expanded, porous, heat insulating body.
  • the coating further contains a heat fusible frit which forms a glaze, strengthening and protecting the coating despite very high temperatures, whereby the coating is low heat transfering and does not powder, flake or peel off the surface of the cable to which it was applied.
  • thermoplastic component first in the presence of heat softens the thermoplastic component.
  • the intumescing substances such as cenospheres and the hydrousoxides with enough heat begin to expand as well as to evolve water vapor.
  • the antimony oxide at higher temperatures can evolve its vapors.
  • the fiber which is ultimately heat decomposable operates in the cold to help bond the composition into a firm strong and crack-free coating while it dries. As the initial heating is applied, the thermoplastic binder melts, but the fiber tends to prevent the resin from flowing away, maintaining the integrity of the composition while it steadily expands with the heat.
  • the fiber and the resin may be charred to an infusible porous mass, developed by the expanding intumescing solids.
  • the expanding mass carried much of the fusible frit to the coating surface, where at high heat exposure temperatures, the frit can fuse protectively as a refraction shell over the porous mass to prevent further heat passing into or from central or inner cable portions.
  • the glazed frit serving further as a reinforcing shell to prevent further ingress of great heat and prevents the mass from peeling or flaking away from its protective position about the cable.
  • the composition functions similarly either as a component of the total panel body or as an even outer layer on the paneling, whereby the mastic substance thereof will expand with heat protectively as a fire barrier or stop.
  • One side of the panel of great heat exposure absorbs and prevents passage of heat, acting as a heat and fire stop partition or protective wall, allowing little heat to pass to the opposite side which remains comparatively cool.
  • a similar effect is achieved both by using ordinary non heat conductive paneling substances such as commercially available insulating board of ceramic fiber which, however, is coated with the mastic hereof to improve the wall paneling as a fire stop through which the cables pass.
  • the water component hereof is free water.
  • the resinous emulsion may be quite thick and more water to that contained in the resinous emulsion is usually added merely supplied as free water in quantity sufficient to adjust the mixture to a trowelable down to sprayable mastic as desired
  • various surfactants such as Triton X 100 an alkylphenoxy, polyloweralkyleneoxy, loweralkanol in which the alkyl has 1-2 carbon atoms, and the product may contain from about 10-40 alkylenoxy groups.
  • the resinous binder hereof is dispersed as an emulsion water in concentration of 45 to 65% resin solids the remainder being water.
  • Minor additives may be supplied to improve the body and flexibility, typically an anti foam agent such as Colloid 677, an oil based polysiloxane, thickeners such as hydroxylethyl cellulose, rust inhibitors such as Strodex PK-90, a potassium polyphosphoric acid ester, and preservatives of an anti-fungal nature, such as Troysan, an organic mercurial complex.
  • Such additives will be used in the minor quantity 0.1 to 5% and sometimes as high as 10%, but generally less than 1%, and usefully less than 0.2% such as 0ol to 1%, and are generally mixed in a carrier such as a propylene glycol in quantity usually less than 2%, such as 0.5 - 1%.
  • the dry components are mixed and evenly blended with the plastic to form a heavy mastic, adding a small quantity of water in the range stated, sufficient to bring the mastic up to an applicable viscosity upon the cables assembled and panels as shown, filling all of the openings, cracks and crevices.
  • the mastic formed as described may be extruded into sheets of desired thickness, such as 1/4 to 1 1/2 inches thick.
  • the wet extruded panel may be set merely by drying evaporation of the water at ambient temperatures. It is sometimes preferred to form the panels thinner, sometimes as thin as 1/4 inch paneling and form panels in pairs of lamina of 2, 3 or more, as desired, and fastened across the opening 10 with metalic fasteners 38 as shown.
  • a preferred form is a single layer of 1/8 to 1/4 inch thick coating upon a board of 1/2 to 1 inch thick body.
  • the cables themselves are encased in coating, which may be thin and flexible or may be applied as a filler mastic between a group of cables which pass through the paneling, cut with holes to allow cables or trays having a number of separately spaced cables to pass through from side to side of the fire stop wall, and the cracks and crevices about each cable are then filled with the mastic.
  • coating which may be thin and flexible or may be applied as a filler mastic between a group of cables which pass through the paneling, cut with holes to allow cables or trays having a number of separately spaced cables to pass through from side to side of the fire stop wall, and the cracks and crevices about each cable are then filled with the mastic.
  • the mastic is applied by spraying, trowelling or brushing upon the cables, between the cables, upon the fire stop wall as a coating and as the paneling substance from which the wall per se is formed.
  • the additives consist of 13 lbs. of propylene glycol, 6 lbs. of Colloid 677, oil based liquid polysil- oxane, 1.5 lbs. of hydroxy methyl cellulose, 6.5 lbs. of rayon fiber, 1.5 lbs. of Strodex PK 90, potassium poly- phosphoric acid ethyl ester and 0.5 lbs. of a mercurial complex preservative.
  • the entire mixture being a viscous dispersion in water. Separately, a dispersion of 1.0 lbs.
  • Triton X 100 which is octyl phenyl polyethyleneoxy- ethanol, and 5.7 lbs. of Tamol, sodium salt of polycarboxy- lic acid, are dispersed in 50 lbs. of water.
  • the aqueous solution of dispersing agents and additives is used to dilute the first resinous emulsion.
  • dry powders consisting of 190 lbs. of hydrous aluminum oxide, 90 lbs. of cenospheres, 80 lbs. of zinc tetraborate, 68 lbs. of antimony oxide and 163 lbs. of frit, a low temperature borosilicate glass essentially lead-free calcium silicate ceramic glass, available from the Ferro Corporation as FB- 282.
  • Thickeners such as Attagel 40 are added to the extent of 10 lbs. to control consistency.
  • the dried powders are mixed into the diluted liquid emulsion to form a spray- able mastic which is sprayed upon electrical cables and upon fire stop panels.
  • the mastic dries at ambient temperatures in air to form approximately a 1/8 to 1/4 inch thick, on average, coating, firmly and flexibly adherent to the cable surface.
  • the base of the panel is commercial ceramic fiber board, such as Kaowool, Duraboard board of 1 inch thickness.
  • the coated panel of this example about 1" was tested according to ASTME 119 by supporting the panel above a flame having an average firing temperature of 1725°F. The flame impinges against the coated side and the temperature of the uncoated side was measured to determine the heat transfer effect. It was found in a series of three hour burning tests that the maximum temperature measured on the uncoated side was about 330oF for the board with a 1/4" coating the . heated mastic generated only a small amount of smoke, the coating remained well adherent to the insulating board. For a 1/8" thick coating with mastic the average transferred temperature was 350°F.
  • a similar mastic as example 1 was formed using a commercial mixture of polyacrylate resins dispersed in water available as UCAR 163, having similarly about 60% of polyacrylate total solids, of which 58% was mixed polyacrylics, the remainder being additives as in example 1.
  • This thick resin was similarly diluted with water and additives, thinning the thick emulsion and into which Is added the powders as example 1.
  • the mastic coated upon the cables as shown is flexible and fire resistant by the same tests, and is highly heat insulating, a 1" thick panel coated with the mastic to a thickness of 1/8" average, and similarly exposed to a 1725°F exposed flame for a three hour time period, transferred the average temperature to the opposite side of about 345°F over the test period.
  • the mastic of example 2 was formed by similarly thinning the commercial resinous dispersion of polyacrylic resins, reducing the extra quantity of water used in the thinning to 15 lbs., whereby, the mastic was thicker and trowelable. In this form it was cast into panels and used as a fire stop panel in a test by exposure to a 1700-1750oF flame. The maximum temperature on the cool side a 1" panel was 285°F, on average over a three hour test period, the panel expanding and charring in the area of the applied heat, but conducted no flame when the burner was withdrawn. As shown in Fig.
  • one or more cables can be passed vertically through a masonry floor, for which purpose they may be mounted within a pre-formed sleeve and the mastic poured around the sleeve.
  • the mastic may also, as shown in Fig. 5 be filled into the body of the sleeve or applied only in separated portions thereof for support, and sealing the cables for prevention of gas flow between spaces separated by the floor.
  • the mastic will be filled or applied around the outside of the sleeve as shown to a selected depth, and other fire stop paneling as shown in Fig. 1 may also be used to close the floor opening.
  • Fig. 6 shows a single cable having a dried precoated film of mastic thereon, a form in which the cable itself may be handled.
  • Various modifications will occur to those skilled in the art, particularly other hydrous oxides and other known ceramic frits may be substituted, but no halogen containing substance will be used. Accordingly, it is intended that the disclosure be regarded as exemplary and not limiting, except as defined in the claims.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Fireproofing Substances (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

Un mastic de protection contre le feu sans substances halogenes comprend comme composants essentiels une fritte en ceramique a basse fusion, des solides hydrates contenant de l'eau liee chimiquement qui se degage sous forme de vapeur d'eau de protection contre le feu lorsqu'ils sont chauffes, des composes incumescents qui se dilatent par la chaleur pour former un corps isolant poreux, dilate ou mousseux, des composes d'ignifuges qui possedent un effet de coupure du feu, telle que l'oxyde d'antimoine et le tetraborate de zinc, et des materiaux liants qui sont des resines thermoplastiques et servent a lier les composants en un revetement flexible lorsqu'il est applique, les materiaux liants etant disperses sous forme d'emulsion dans de l'eau et melanges avec les autres composants pour former un mastic. Avec addition supplementaire d'eau, le mastic peut etre converti et avoir une viscosite voulue pour etre applique a la truelle, par enrobage ou pulverisation. Le mastic est applique sous la forme d'un enrobage (15) ou d'une botte precoulee sur un ou un groupe de plusieurs cables electriques de puissance et de commande pour arreter la propagation du feu et empecher l'auto-allumage des cables par des foyers d'incendie dus a une surcharge ou autres defauts electriques, ou de l'huile, des detritus ou autres en feu. Le mastic est faconne avantageusement en panneaux protecteurs contre le feu (30) qui, une fois seches, peuvent etre montes comme une paroi de protection isolant une section de cables passant d'une zone a une autre (A, B) comme un dispositif d'arret d'incendie. Le panneau entier peut etre forme de mastic seche, ou le mastic peut etre revetu sur une ou deux faces de panneaux isolants tels que des plaques en fibre ceramique, pour reduire egalement le gradient de temperature du panneau lorsqu'il est expose au feu et par la meme reduire de maniere sensible la temperature sur la face froide de 50-70 degres F, reduisant au minimum le danger d'auto-inflammation des gaz ou materiaux combustibles tels que l'isolation, les gaines des cables ou autres materiaux inflammables.
PCT/US1979/000160 1979-03-23 1979-03-23 Mastique de protection contre le feu et dispositif d'arret d'incendie WO1980002086A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/US1979/000160 WO1980002086A1 (fr) 1979-03-23 1979-03-23 Mastique de protection contre le feu et dispositif d'arret d'incendie
JP50158479A JPS56500341A (fr) 1979-03-23 1979-03-23
CA324,164A CA1115450A (fr) 1979-03-23 1979-03-26 Mastic extincteur et coupe-feu
EP19790901244 EP0025433A4 (fr) 1979-03-23 1980-10-08 Mastic de protection contre le feu et dispositif d'arret d'incendie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1979/000160 WO1980002086A1 (fr) 1979-03-23 1979-03-23 Mastique de protection contre le feu et dispositif d'arret d'incendie
WOUS79/00160 1979-03-23

Publications (1)

Publication Number Publication Date
WO1980002086A1 true WO1980002086A1 (fr) 1980-10-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1979/000160 WO1980002086A1 (fr) 1979-03-23 1979-03-23 Mastique de protection contre le feu et dispositif d'arret d'incendie

Country Status (3)

Country Link
EP (1) EP0025433A4 (fr)
JP (1) JPS56500341A (fr)
WO (1) WO1980002086A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062298A2 (fr) * 1981-03-31 1982-10-13 FIBERGLAS CANADA Inc. Etanchéité durcissant à la chaleur pour accouplements flexibles
WO1983004041A1 (fr) * 1982-05-07 1983-11-24 A/S Norsk Kabelfabrik Materiau resistant au feu
EP0271248A1 (fr) * 1986-12-09 1988-06-15 Minnesota Mining And Manufacturing Company Barrière coupe-feu pour le passage de conduits au travers d'une ouverture dans une paroi
GB2409682A (en) * 2003-12-16 2005-07-06 Huda Morgan Polycarboxylic acids with cenospheres
US8070895B2 (en) 2007-02-12 2011-12-06 United States Gypsum Company Water resistant cementitious article and method for preparing same
US8329308B2 (en) 2009-03-31 2012-12-11 United States Gypsum Company Cementitious article and method for preparing the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184661A (ja) * 1985-02-13 1986-08-18 Canon Inc 機器の管理装置
JPS61184662A (ja) * 1985-02-13 1986-08-18 Canon Inc 機器の管理装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090764A (en) * 1957-12-26 1963-05-21 Benjamin Foster Company Intumescent mastic coating
US3370191A (en) * 1964-01-31 1968-02-20 Ford Motor Co Electrical machines and interconnections therefor
US3662201A (en) * 1970-12-14 1972-05-09 Gen Motors Corp Commutation system for dynamoelectric machines
US3861425A (en) * 1971-12-06 1975-01-21 Owens Corning Fiberglass Corp Coating composition
US3906321A (en) * 1973-10-15 1975-09-16 Jalal Tawfiq Salihi Direct current motors
US3912671A (en) * 1974-05-23 1975-10-14 Denki Kagaku Kogyo Kk Flame-retardant resinous composition
US3928210A (en) * 1972-01-17 1975-12-23 Dyna Therm Corp Fire protective composition for use with electrical cables
US3940549A (en) * 1973-03-30 1976-02-24 Advance Coatings Co. Fire-resistant resin
US3959705A (en) * 1974-12-27 1976-05-25 Jalal Tawfiq Salihi Direct current motors with improved commutation
US4018983A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Electrical arc and fire protective sheath, boot or the like
US4018962A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Arc and fireproofing tape

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090764A (en) * 1957-12-26 1963-05-21 Benjamin Foster Company Intumescent mastic coating
US3370191A (en) * 1964-01-31 1968-02-20 Ford Motor Co Electrical machines and interconnections therefor
US3662201A (en) * 1970-12-14 1972-05-09 Gen Motors Corp Commutation system for dynamoelectric machines
US3861425A (en) * 1971-12-06 1975-01-21 Owens Corning Fiberglass Corp Coating composition
US3928210A (en) * 1972-01-17 1975-12-23 Dyna Therm Corp Fire protective composition for use with electrical cables
US3940549A (en) * 1973-03-30 1976-02-24 Advance Coatings Co. Fire-resistant resin
US3906321A (en) * 1973-10-15 1975-09-16 Jalal Tawfiq Salihi Direct current motors
US3912671A (en) * 1974-05-23 1975-10-14 Denki Kagaku Kogyo Kk Flame-retardant resinous composition
US3959705A (en) * 1974-12-27 1976-05-25 Jalal Tawfiq Salihi Direct current motors with improved commutation
US4018983A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Electrical arc and fire protective sheath, boot or the like
US4018962A (en) * 1975-04-09 1977-04-19 Pedlow J Watson Arc and fireproofing tape

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Dainichi-Nippon Cables Review No. 61 issued September, 1976 Dainichi-Nippon Cables Ltd., Osaka, Japan, T. YABUKI et al., New Types of Fire Retardant Materials and their Application to Fire Protection of Cables, pages 56-71. *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062298A2 (fr) * 1981-03-31 1982-10-13 FIBERGLAS CANADA Inc. Etanchéité durcissant à la chaleur pour accouplements flexibles
EP0062298A3 (en) * 1981-03-31 1983-03-23 Fiberglas Canada Inc. Heat hardening sealant-gel for flexible couplings
WO1983004041A1 (fr) * 1982-05-07 1983-11-24 A/S Norsk Kabelfabrik Materiau resistant au feu
EP0271248A1 (fr) * 1986-12-09 1988-06-15 Minnesota Mining And Manufacturing Company Barrière coupe-feu pour le passage de conduits au travers d'une ouverture dans une paroi
GB2409682A (en) * 2003-12-16 2005-07-06 Huda Morgan Polycarboxylic acids with cenospheres
US8070895B2 (en) 2007-02-12 2011-12-06 United States Gypsum Company Water resistant cementitious article and method for preparing same
US8568544B2 (en) 2007-02-12 2013-10-29 United States Gypsum Company Water resistant cementitious article and method for preparing same
US8329308B2 (en) 2009-03-31 2012-12-11 United States Gypsum Company Cementitious article and method for preparing the same

Also Published As

Publication number Publication date
EP0025433A4 (fr) 1981-08-27
EP0025433A1 (fr) 1981-03-25
JPS56500341A (fr) 1981-03-19

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