CN1175062C - Coating composition for fire-preventing and acoustics use - Google Patents

Coating composition for fire-preventing and acoustics use Download PDF

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Publication number
CN1175062C
CN1175062C CNB99106707XA CN99106707A CN1175062C CN 1175062 C CN1175062 C CN 1175062C CN B99106707X A CNB99106707X A CN B99106707XA CN 99106707 A CN99106707 A CN 99106707A CN 1175062 C CN1175062 C CN 1175062C
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China
Prior art keywords
coating composition
sound insulation
compound
weight
several
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Expired - Fee Related
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CNB99106707XA
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CN1269385A (en
Inventor
丁尚钰
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Kk Three
Samson Co Ltd
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Kk Three
Samson Co Ltd
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Publication of CN1269385A publication Critical patent/CN1269385A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/008—Cement and like inorganic materials added as expanding or shrinkage compensating ingredients in mortar or concrete compositions, the expansion being the result of a recrystallisation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C04B28/105—Magnesium oxide or magnesium carbonate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0091—Organic co-binders for mineral binder compositions
    • C04B2103/0092—Organic co-binders for mineral binder compositions for improving green strength
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/20—Retarders
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/40—Surface-active agents, dispersants
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/44—Thickening, gelling or viscosity increasing agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/67—Biocides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Building Environments (AREA)
  • Paints Or Removers (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention obtains a coating compsn. which exhibits excellent fire resistance and sound absorbing performance in the min. coating thickness by incorporating specified proportions of a lightweight aggregate, a binder, a heat absorbing material, an expanding material and carbonaceous sound absorbing fibers. The coating compsn. contains 25-60 wt.% lightweight aggregate, 20-60 wt.% binder such as Portland cement, <=50 wt.% heat absorbing material, 5-30 wt.% expanding material such as silica and 2-20 wt.% carbonaceous sound absorbing fibers such as surfactant, thickener, strength enhancer, retarder and antibacterial agent such as pentachlorolaurate.

Description

A kind ofly be used to prevent fires and the coating composition of acoustical applications
Technical field
The present invention relates to a kind ofly be used to prevent fires and the coating composition of acoustical applications, and be particularly related to coating composition with excellent comprehensive performances, the intensity of steel skeleton construction that can under the high temperature in when burning, prevent coating composition wherein of the present invention reduce and the surface of the steel skeleton construction of internal force variation and wall by comprising buildings or top ceiling on spray the sound-proofing properties preferably that has.
Background technology
Along with the quick urbanization that causes densely inhabited district to increase in a large number, building large-area high-rise, make great efforts on narrow and small area, to hold a large amount of populations.In order to adapt to this situation, adopted steel skeleton construction in a large number.
But it is breakneck that steel skeleton construction is directly used in large-area high-rise, and promptly when finiss burns in fire, loss of life and personal injury is big in fire and the obnoxious flavour that produced.And steel skeleton construction produces under high temperature intensity and internal force further reduce, and can't bear its load and finally cave in.In this case, be badly in need of applying the surface of this steel skeleton construction with coating with fire prevention effect.
Explain the existing fp coating that is used for below.
According to the active ingredient of the coating that is used for fire resistance applications, they are divided into pearly-lustre rock, vermiculite, asbestos or their mixture; Coating method also is divided into the spraying method of fire prevention mould installation method and water mashed prod (slurry).
Up to now, the coating-forming agent that is used for fire resistance applications has had very big progress at aspect of performance.Particularly, in order to have better thermotolerance, the modern technologies development adopts some heat-sink materials under high temperature to go far towards the raising of resistivity against fire.Heat-sink material under high temperature plays the effect that absorbs ambient heat when catching fire, and their inside is in conjunction with destroyed (lose bonded water or produce carbon dioxide) simultaneously.These materials can prevent that flame is transmitted to Steel Skeleton, thereby have improved the resistivity against fire of coating-forming agent.Although these heat-sink materials play the effect that absorbs ambient heat under high temperature, owing to losing combination water or changing into carbon dioxide and lose its volume inevitably fast.The volume change of coating-forming agent causes large-area crack and crack on corresponding situation of building, more serious situation is that the coating material that adopts on corresponding situation of building peels off in ignition process, particularly peel off, and this has just weakened the intensity and the internal force of buildings from steel skeleton construction.
In order to overcome these defectives, in coating composition, contain some inorganic fibres, still, and its component, for example asbestos or glass fibre have caused the dermatitis on the health, and may cause fash.Sepiolite does not have effect to eliminating the stress that is caused by the volume change of coating-forming agent in combustion processes, and this is because it does not decompose under high temperature fully.
Disclosed adverse effect is as follows in existing document:
Japanese unexamined patent publication No. 6-32666 discloses the example of the coating-forming agent of employing inorganic fibre (asbestos, glass fibre etc.), but they are verified side effect is arranged, and is deleterious as dermatitis and to human body.
Above-mentioned patent has reported that a large amount of reemulsification powdexes that some coating-forming agents comprised are harmful, and it produces toxic gas in combustion processes.And, if adopt a spot of reemulsification powdex, be difficult for to form microfracture, and homalographic or big area crack in producing.And when adopting little vermiculite,, produced middle homalographic or large-area crack owing to can not control the vermiculite stress that combustion processes increases.
The existing in the prior art report of some shortcomings of coating-forming agent, promptly relevant with a spot of heat absorbent more thickness of bad resistivity against fire needs are 30 millimeters coating, this is that 1 hour fire prevention time is necessary.Because a large amount of heat absorbents has improved the resistivity against fire of coating-forming agent, but adopt the particle water glass with the extender coating to produce the bigger contraction that mostly is 0.7 higher density most and is caused under high temperature by heat absorbent, this has just caused coating-forming agent because peeling off of causing of its expansion and contraction.And, produce the particle water glass and be difficulty with uneconomic.
In order to overcome its shortcoming, be characterised in that wherein the coating composition (being disclosed in the European patent 661241) of producing the agglomerate that contains combination water contains the cement greater than 40%, but these combination water will be evaporated in the process that the neutralization of dry shrinkage process has heat to exist, and coating-forming agent is shunk.Because for overcoming some shortcoming, the glass fibre that adopts as peeling off and/or peeling off of coating-forming agent is deleterious to human body, most of people of job site are unwilling to handle glass fibre.
According to the ordinary method of the coating-forming agent that is used for fire resistance applications, added some inorganic fibres, as asbestos or glass fibre, be controlled at effectively under the state of drying or heat and shrink.Yet these inorganic fibres are deleterious to human body, and even do not add in the method suitable under the situation of any fiber by other, use to be that the extender prevent to be adopted by the crack that contraction causes does not act on the control problem relevant with the crack.
Simultaneously, the noise deadener agent is divided into (1) place mat type and (2) spary coating type according to method of operating coating reagent on top ceiling, wall and the floor of buildings.According to the chemical constitution of the material that is adopted, the noise deadener agent also is divided into (1) and has the porous sound insulation reagent of high frequency noise reduction coefficient (this paper is meant " NRC ") preferably, and (2) have wide-vibration and (3) resonance class sound insulation reagent of low frequency NRC value preferably.
Spraying class sound insulation reagent prepares as active ingredient by mixing inorganic fibre, tackiness agent, thickening material, mineral oil and other organic additive or their mixture or vermiculite or vegetable fibre.Although all these materials can obtain some character, as sound-absorbing and insulation effect, the danger that produces dust when the factory processes inorganic fibre is very big.Therefore to pay special attention to handle inorganic fibre, even followingly should have the operation of other compacting to come after spraying, to obtain enough intensity.
In recent years, making great efforts exploitation always and having better room air, prevent the sound insulation reagent of various noises, and these evolutionary operation(EVOP)s are for guaranteeing to prevent fires to greatest extent and sound insulation is formulated.
Summary of the invention
In order to overcome some defectives that conventional coating-forming agent has, the purpose of this invention is to provide a kind of fire prevention and sound damping composition of being used for, it has excellent comprehensive performances, wherein a) in combustion processes, can guarantee the security of steel skeleton construction, and can prevent coating-forming agent big area crack or peel off from the corresponding buildings position, and b) adopt less coat-thickness still can guarantee fire line and heat-sinking capacity.
In order to reach purpose of the present invention, be used to prevent fires and the sound damping coating composition be characterised in that to have following chemical composition, contain the light-duty agglomerate, 20～60 weight % tackiness agents of 25～60 weight %, less than the heat absorbent of 50 weight %, the carbonization sound insulation fiber of the extender of 5～30 weight % and 2～20 weight %.
Be used to prevent fires and this coating composition of sound insulation purposes is characterised in that material below further optionally adopting, wherein it contains:
Tensio-active agent less than 1.5 weight % of chemical constitution total amount its objective is the raising physical properties, as the dispersiveness of slurry, the effect of entrapped air and the lubricity in spraying process;
Less than the thickening material of 5 weight % of chemical constitution total amount, its objective is to guarantee that application job carries out and prevent producing any small crack at coatingsurface smoothly in drying process;
Less than the toughener of 2 weight % of chemical constitution total amount, its objective is to have special intensity in some places;
2 weight % retarding agents less than the chemical constitution total amount its objective is the coating time that provides enough; With
Antiseptic-germicide less than 1 weight % of chemical constitution total amount its objective is the sterilizing use to mould or bacterium.
According to the present invention; be used to prevent fires and this coating composition of sound insulation purposes has several advantages: when a) after carrying out coat operations, carrying out drying by injection; any shrinkage crack does not take place or peel off; b) extender prevents to shrink in combustion processes; c) under the situation that has the microfracture that causes by carbonization sound insulation fiber; by the string stress of dispersion treatment by tackiness agent or big thermal capacitance heat absorbent generation; thereby prevented the big area crack of coating-forming agent or peeled off; so just guarantee that with the form of good protection coating-forming agent has enough resistivity against fires, until finishing fireproofing.
According to the present invention, to being used to prevent fires and some components of the coating composition of sound insulation purposes illustrate in greater detail together with its mechanism.
The light-duty agglomerate of preparation 4～200 order sizes.It is from following material: the natural inorganic thing, as inflatable or unexpansive pearly-lustre rock, float stone, vermiculite, volcanic ash and float stone; The hollow solid circles spheroid for preparing in the mode that in glass system or inorganics, causes hole artificially; With one or several uses of selection in the organic agglomerate that constitutes by particle-styrofoam and pulverizing styrofoam.
Because the proportion of light-duty agglomerate is low, is 0.01～0.8g/cc, so reduced the load-carrying burden of buildings.In addition, owing in light-duty agglomerate, form many micropores, its thermal conductance low (0.03～0.04kcal/mh ℃).Known light-duty agglomerate has very good bulk properties, as sound absorbing, sound insulation and intensity, more helps to improve fire prevention, sound dampening properties and the sound absorbing power of coating-forming agent.Especially the pearly-lustre rock is nontoxic as food additive and is the acceptable material of human body.
If coating composition of the present invention contains the light-duty agglomerate greater than 60 weight %, when spraying work, it is quite favourable that the density of coating-forming agent and thermal conductance reduce, but its binding property and intensity are destroyed.On the contrary, if coating composition of the present invention contains the light-duty agglomerate less than 25 weight %, binding property and intensity improve, still the density and the thermal conductance variation of coating-forming agent when spraying operation.In this, the consumption of preferred light-duty agglomerate is 25～60 weight % of chemical constitution total amount.
The purpose of tackiness agent is bonding mutually between the surface that is used for suitably light-duty agglomerate being bonded in steel skeleton construction (perhaps corresponding situation of building is as top ceiling or wall) and/or the two kinds of light-duty agglomerate.Used tackiness agent is selected from cement (as portland cement, portland blast-furnace slag cement, silicon-dioxide cement, alundum cement and magnesia cement) or gypsum (as dehydrated gypsum, hemi-hydrated plaster and gypsum plaster), perhaps one or several in magnesium oxide and the sal epsom.
If coating composition of the present invention contains the tackiness agent greater than 60 weight %, the binding property and the intensity of coating-forming agent are improved, but there are some shortcomings, a) owing to have higher density and thermal conductance, its resistivity against fire variation, b) the big stress of coating composition generation in combustion processes, and c) concentration of local stress causes large-area crack.On the contrary, if coating composition of the present invention contains the tackiness agent less than 20 weight %, the density of coating-forming agent and thermal conductance improve, but its binding property and intensity variation.In this, the consumption of preferred adhesive is 20～60 weight % of chemical constitution total amount.
Artificial heat absorbent is that form with first processed powders or agglomerate is from Wingdale, as lime carbonate, water anhydrite and caustic lime; Gypsum is as dehydrated gypsum, hemi-hydrated plaster and gypsum plaster; Aluminium hydroxide; Tai-Ace S 150; Borax; Magnesiumcarbonate; Magnesium hydroxide; Polynite, wilkinite; Sodium bicarbonate; Select one or several uses in water glass or the gaseous compound.The purpose of artificial heat absorbent is further to improve heat-sinking capacity, makes the heat of bonded water or carbon dioxide gas bulk absorption outside.
It is effective in Steel Skeleton or corresponding situation of building after applying that this heat absorbent is used for fire prevention and sound damping coating composition, it has absorbed the heat in the combustion processes, and discharge combination water or carbon dioxide, so this temperature that has reduced steel skeleton construction or corresponding situation of building increases suddenly; That is, this heat absorbent has the thermal resistance effect that is similar to other active ingredient on steel skeleton construction, and this effect goes far towards the resistivity against fire of coating composition.
If coating composition of the present invention contains the heat absorbent greater than 50 weight %, resistivity against fire improves, and the active ingredient outside the heat absorbent in the coating composition then produces linear big area crack, comes off and peels off because the shared less meeting of ratio is shunk coating composition.In this, the consumption of preferred heat absorbent is within the 50 weight % of chemical constitution total amount.
Extender adopts from silicon-dioxide, magnesium oxide, inflatable or unexpansive vermiculite, inflatable or unexpansive float stone and inflatable or unexpansive pearly-lustre rock selects one or several materials to use.
Coating composition if be used for preventing fires with the sound insulation purposes shrinks in combustion processes, and extender is effectively, and it plays the effect of compensation coating composition volume change, and the result has controlled the volume change of steel skeleton construction or corresponding situation of building effectively.Particularly, the volumetric expansion speed of silicon-dioxide is about 20% under high temperature.
As a result, coating-forming agent does not have the variation of any outside in combustion processes, and has improved coating-forming agent as corresponding position, as strong protectant resistivity against fire of Steel Skeleton.
If coating composition of the present invention contains the extender less than 5 weight %, in combustion processes, can not expect the desirable effect of playing, but surpassing under the situation of 30 weight %, the stress that is produced by coating-forming agent in combustion processes causes the crack of coating-forming agent in corresponding situation of building or peels off.In this, the amount of preferred extender adopts 5～30 weight % of chemical constitution total amount.
Carbonization sound insulation fiber uses by select one or several fibers from paper pulp, carbon fiber, cotton yarn, polyethylene fibre, styroflex, polypropylene fibre and dissolving pulp.
Carbonization sound insulation fiber can eliminate effectively be used for preventing fires and the coating composition of sound insulation purposes in the relevant big area crack of the contraction of combustion processes with peel off.The fiber of carbonization own produces microfracture in combustion processes, as on the coating-forming agent in carbonization zone the spider line being arranged, and helps to be dispersed in the stress that produces in the combustion processes.Without any variation, heat infiltrates the position that the big area crack is arranged or peel off can be prevented in corresponding situation of building, raises as temperature on the steel skeleton construction since coating-forming agent is bonded at corresponding situation of building.
If coating composition of the present invention contains the carbonization sound insulation fiber less than 2 weight %, can disadvantageously form tiny crack, and can't guarantee its heat-sinking capacity.On the contrary, if coating composition of the present invention contains the carbonization sound insulation fiber greater than 20 weight %, the intensity of coating composition reduces greatly.In this, the consumption of preferred carbonization sound insulation fiber is 2～20 weight % of chemical constitution total amount.
The length of acoutic fibre board greater than 30 millimeters situation under, when carrying out coat operations, can't form the suitable coating compounds agent.The length of therefore preferred acoutic fibre board is in 30 millimeters.
Other additive is described below.
The purpose of tensio-active agent is will be used to prevent fires and the coating composition of sound insulation purposes when being ejected on the corresponding situation of building, and can improve physical properties, as the dispersiveness of slurry, the effect and the lubricity of entrapped air.It can be from sodium based surfactants, phemyol surface active agent, based on the tensio-active agent of lignin with based on selecting one or several materials to use the tensio-active agent of melanocyte, and preferred amount is 1.5 weight % less than the chemical constitution total amount.
The purpose of thickening material is to be used for guaranteeing to operate better, and prevents to produce micro-cracks on the paint laminar surface when drying.It selects one or several to use from carboxymethyl cellulose (CMC), methylcellulose gum, polyethylene oxide, carbohydrate and swelling clay (wilkinite, diatomite etc.), and preferable amount is less than 5 weight % of chemical constitution total amount.
The purpose of toughener is the certain strength that is used to strengthen each position.It selects one or several to use from polyvinyl alcohol (PVC), polyvinyl acetate base ester (PVAc), acetate ethylidene vinyl ester (EVA), latex resin, vinyl acetate base resin, acetate vinyl chloride resin, acrylic resin, polyurethane, epoxy and phenolic resin, and preferable amount is less than 2 weight % of chemical constitution total amount.
The purpose of retarding agent is to be used to improve enough operating times.It selects one or several to use from animal proteinum and carbohydrate, and preferable amount is less than 2 weight % of chemical constitution total amount.
The purpose of antiseptic-germicide is to be used to resist the antimycotic of mould or bacterium or antibacterium purposes.It selects one or several to use from oxybenzene compound, organo-tin compound, organomercury compound, triaizine compounds, quaternary ammonium salt, sulfonyl pyridine halogenide, Vancide 89 compound, organocopper compound, organic nitrogen compound, iodine compound, silver compound, chloronaphthalene compound, dehydroabietylamine Pentachlorophenol and pentachloro-lauroleate, and preferable amount is less than 1 weight % of chemical constitution.
According to the present invention, be used to prevent fires and the thickness of the coating composition of sound insulation purposes when spraying one time greater than 60 millimeters.
Embodiment
The present invention adopts the following examples to be described in detail, but is not limitation of the invention, and these illustrate the embodiment of some preferred chemical constitutions.The following examples 1～6 and comparative example 1～3rd, coating composition of the present invention is used for fire resistance applications, and embodiment 7 is used for the sound insulation purposes.
Embodiment 1～6
According to the chemical constitution of following table 1, will contain in an amount of water of the mixture impouring of pearly-lustre rock, cement, gypsum plaster, silicon-dioxide, paper pulp and other additive and make slurry.With H shaped steel (300 * 300 * 10 * 20mmt, L2000mm) the surface of this slurry coating as sample.Keep 30 centimetres distance with 2m coating-forming agent and coating one side 3The emitted dose of/hr vertically sprays.Continue the spraying operation and break away from, measure the thickness of a spraying and applying until coating-forming agent on corresponding situation of building.Then thickness measuring instrument is vertically compressed into the situation of building, corresponding center that each wants working sample, measure each sample thickness with twice.More particularly, when the pin of measuring thickness arrives corresponding situation of building, apply enough power, follow mobile slide plate to keep the plane surface of coating-forming agent.With determinator and coating-forming agent after separating, adopting the thickness telltale is the thickness that unit measures coating composition with 1 millimeter.The sample of preparation is like this placed 4 weeks and fully aging.Measure the thickness and the density of coating-forming agent (coating), on macroscopic view, measure again coating-forming agent skew, peel off and the crack situation.And, in order to investigate the resistivity against fire of coating composition, each sample is placed in the process furnace temperature (according to the Heating temperature of the method for KS F2257 and ASTM E 119) of the coated side of each sample when measuring internal temperature and be 1000 ℃.Before carrying out coat operations, temperature sensor is connected on the sample, As time goes on adopt the sensor determination variation of temperature.After fire testing is finished, sample is taken out from process furnace, measure length, quantity and the situation of crackle, shown in following table 2.
The comparative example 1～3
Based on the chemical coating composition of following table 1, will contain in an amount of water of the mixture impouring of pearly-lustre rock, cement, gypsum plaster, silicon-dioxide, paper pulp and other additive and make slurry.With the H shaped steel (300 * 300 * 10 * 15mmt) of this slurry coating as sample.Mensuration and embodiment 1～3 aging and physical properties carry out equally, shown in following table 2.
Table 1. chemical coating composition
Composition Embodiment The comparative example
1 2 3 4 5 6 1 2 3
Light-duty agglomerate The pearly-lustre rock 35 28 35 24 30 30 40 37 35
Float stone - - - 20 - 20 - - -
Tackiness agent Cement 30 11 - - 43 13 45 43 40
Magnesium oxide - 12 20 20 - 12 - - -
Sal epsom - 3 5 5 - 3 - - -
Heat absorbent Gypsum plaster 12 - - 10 8 5 - - 11.5
Wingdale - 26 - - - - - - -
Aluminium hydroxide - 10 10 10 10 5 - - -
Extender Silicon-dioxide 15 7 25 6 6 6 - - 12
The sound insulation fiber of carbonization Paper pulp 8 3 5 15 3 3 2 8 1.5
Additive In right amount
Water In right amount
The resistivity against fire of table 2. sample and crackle situation
Character Embodiment The comparative example
1 2 3 4 5 6 1 2 3
Width after the injection (millimeter) 20 20 19 20 20 19 19 20 20
Resistivity against fire (℃) 198 185 198 196 193 211 - - 531
Density (kg/m 3) 357 412 357 312 334 321 533 485 521
The crack state Length (millimeter) 7～44 10～ 110 7～44 2～34 8～49 8～95 55～ 2000 76～ 1450 42～ 1200
Width (millimeter) 0.01 ～0.2 0.01 ～0.9 0.01 ～0.2 0.01 ～ 0.17 0.01 ～1.2 0.01 ～0.8 1～4 1～14 0.1～ 2
Sheet Surpass 400 Surpass 250 Surpass 400 Surpass 600 Surpass 250 Surpass 300 About 20 About 35 About 50
Character Microfracture better disperses Microfracture better disperses Microfracture better disperses Microfracture better disperses Microfracture better disperses Microfracture better disperses The major part of peeling off is peeled off Peel off Part is peeled off
The thickness of Pen Sheing (millimeter) once 67 38 85 76 58 35 12 16 11
From above-mentioned table 2 as seen, its explanation of the present invention be used to prevent fires and the coating composition of sound insulation purposes with the fire protection coating agent that acts on steel skeleton construction the time, meet fully Korean ConstructionLaw defined requirement (1000 ℃ 1 hour and less than 350 ℃).It further specifies after spraying operation, and coating-forming agent does not produce any crack, peels off and peels off.
To be about 20 millimeters spraying consistent with carry out thickness as coating, and when the sample with embodiments of the invention 1～6 preparation was placed in 1000 ℃ the High Temperature Furnaces Heating Apparatus 1 hour, their internal temperature was less than 200 ℃.On the contrary, the sample that is prepared by conventional coating composition shows impossible its internal temperature of measuring, and perhaps its internal temperature is greater than 500 ℃.Even this explanation conventional composition has satisfied resistivity against fire, owing to take place medium or big area crack or peel off in the agent of combustion processes floating coat, heat can infiltrate coating material.
In addition, its explanation is because the coating-forming agent thickness of conventional coating composition less than 20 millimeters, comprises that the aged spraying coating process carries out 2 to 5 times, so that with the timed interval coating steel skeleton construction of 1 hour, 2 hours and 3 hours, can obtain enough resistivity against fires.But obvious coating of the present invention is carried out primary coating by injection and is just had enough thickness.Coating composition of the present invention is compared the efficient of having carried out coat operations having improved economically with ordinary method, this is because each hour can be used the coating-forming agent of 2 times of amounts.
Embodiment 7
Have the chemical constitution identical, will contain in an amount of water of the mixture impouring of pearly-lustre rock, cement, gypsum plaster, silicon-dioxide, paper pulp and other additive, make slurry with embodiment 1.For several groups of samples, employing Barmlite (thickness: 10 millimeters, size: 1.2 meters * 1.2 meters) and the foam styrene foam (thickness: 50 millimeters, size: 1.2 meters * 1.2 meters) as raw material, again coating composition is used on these materials.
Be ejected on the Barmlite with coating composition, thickness is respectively 10 millimeters (samples 1), 20 millimeters (sample 2), 30 millimeters (sample 3) and 50 millimeters (sample 4).This coating composition is ejected on foam-styrenic foams, and thickness is respectively 10 millimeters (samples 5) and 20 millimeters (sample 6).The density of prepared sample is at 320～370kg/m 3Scope in.
These samples 1～6 are transferred in the soundproof room, and, concentrated each unit sample in order to measure sound absorbing power.For the size of the sample that satisfies KS F 2805 methods (being used for measuring the method for sound absorption coefficient) regulation at reverberation chamber, with these 6 samples be placed on the soundproof room that surrounds with steel construction (2.93 meters * 3.63 meters, the total area: 10.64m 2) the center, its opening is with adhesive tape and seal gum sealing, to measure the noise reduction ratio.Therefore, fill same material in the slit between one group of sample.Table 3 below the NRC value of measuring by the method for measuring sound absorbing coefficient in reverberation chamber is listed in.
Table 3. endothermic nature
Sample Primary frequency (Hz) Average N RC value
125 250 500 1000 2000 4000
1 0.09 0.19 0.42 0.43 0.56 0.68 0.40
2 0.11 0.23 0.46 0.54 0.65 0.72 0.47
3 0.17 0.36 0.64 0.68 0.73 0.72 0.60
4 0.26 0.60 0.78 0.72 0.76 0.75 0.72
5 0.05 0.19 0.36 0.51 0.61 0.70 0.42
6 0.12 0.32 0.58 0.61 0.69 0.72 0.55
Above-mentioned table 3 as seen, this test-results is not based on the sample determination of group.With under any sample bonded situation not producing the sample of a group, there is not the bonding part to help to improve its average N RC.
Shown in top table 3, adopt foam-styrenic foams as raw material, noise reduction coefficient has raising slightly.Although do not adopt foam-styrenic foams as raw material, when applied thickness was 50 millimeters, the NRC value of coating composition of the present invention was 0.72, was better than conventional sound insulation reagent.But, because all porous sound insulation reagent are low in the NRC of low frequency range value, preferably adopt wide vibration sound insulation reagent, as glued board, Barmlite, plasterboard be as raw material, and more preferably styrofoam is as foam-styrenic foams.
As mentioned above, can prove of the present inventionly to be used to prevent fires and the coating composition of sound insulation purposes has the resistivity against fire preferably that the resistivity against fire that satisfies Korea Construction Law requires (less than 350 ℃) when applied thickness is 20 millimeters, and its resistivity against fire proof is better than the coating-forming agent that routine is used for fire resistance applications.More particularly, coating composition of the present invention has successfully reduced coat-thickness, according to various mechanism, has the thermal resistance effect as light-duty agglomerate porousness, and this fire protection requirement with KoreaConstruction Law is consistent.And then coating composition of the present invention can prevent that coating-forming agent from peeling off from corresponding situation of building, thereby guarantees good resistivity against fire.Because coating composition of the present invention has good sound absorbing power and better operability, it can control the hostile environment situation effectively.Particularly, coating composition of the present invention is because in fact its enough resistivity against fire has increased the flameproof effect of steel skeleton construction, this is owing to the microfracture that produces in the agent of combustion processes floating coat can make coating-forming agent attached on the corresponding situation of building, finishes until fireproofing.

Claims (12)

1. one kind is used to prevent fires and the coating composition of sound insulation purposes, it contains the tackiness agent of light-duty agglomerate, 20～60 weight % of 25～60 weight %, less than the heat absorbent of 50 weight %, the carbonization sound insulation fiber of the extender of 5～30 weight % and 2～20 weight %, the granularity of wherein said light-duty agglomerate is the 4-200 order, and proportion is 0.01-0.8g/cc.
Claim 1 be used to prevent fires and the coating composition of sound insulation purposes, wherein said light-duty agglomerate is selected from following one or several: the inorganic mineral of inflatable or unexpansive pearly-lustre rock, float stone, vermiculite, volcanic ash and pumiceous natural generation; The hollow solid circles spheroid for preparing in the mode that in glass system or inorganics, causes hole artificially; With the organic agglomerate that constitutes by particle styrofoam and pulverizing styrofoam.
Claim 1 be used to prevent fires and the coating composition of sound insulation purposes, wherein said tackiness agent is selected from following one or several: portland cement, portland blast-furnace slag cement, silicon-dioxide cement, alundum cement, magnesia cement, gypsum, gypsum plaster, magnesium oxide and sal epsom.
Claim 1 be used to prevent fires and the coating composition of sound insulation purposes, wherein said heat absorbent is selected from following one or several: Wingdale, the water lime, caustic lime, dehydrated gypsum, hemi-hydrated plaster, gypsum plaster, aluminium hydroxide, magnesium hydroxide, magnesiumcarbonate, lime carbonate, Tai-Ace S 150, borax, polynite, wilkinite, sodium bicarbonate and water glass.
Claim 1 be used to prevent fires and the coating composition of sound insulation purposes, wherein said extender is selected from following one or several: silicon-dioxide, magnesium oxide, inflatable or unexpansive vermiculite, inflatable or unexpansive float stone, inflatable or unexpansive perlite, magnesiumcarbonate, sillimanite, kyanite, andaluzite, bauxite, pyrophyllite, rhombspar, ferric oxide, Z 250, iron protoxide, illite, talcum, potash feldspar, lardite, zircon, silicon carbide, shale and clay.
Claim 1 be used to prevent fires and the coating composition of sound insulation purposes, wherein said carbonization sound insulation fiber is selected from following one or several: paper pulp, carbon fiber, cotton yarn, polyethylene fibre, styroflex, polypropylene fibre and dissolving pulp.
Claim 1 be used to prevent fires and the coating composition of sound insulation purposes, wherein said additive is selected from following one or several: tensio-active agent, thickening material, toughener, retarding agent and antiseptic-germicide.
Claim 7 be used to prevent fires and the coating composition of sound insulation purposes, wherein said tensio-active agent is selected from following one or several: sodium based compound, phenyl compound, based on the compound of lignin with based on the compound of melanocyte.
Claim 7 be used to prevent fires and the coating composition of sound insulation purposes, wherein thickening material is selected from following one or several: carboxymethyl cellulose, methylcellulose gum, polyethylene oxide, carbohydrate and swelling clay (wilkinite, diatomite etc.), the add-on of this thickening material is less than 5 weight %.
Claim 7 be used to prevent fires and the coating composition of sound insulation purposes, wherein toughener is selected from following one or several: polyvinyl alcohol, polyvinyl acetate base ester, acetate ethylidene vinyl ester, latex resin, vinyl acetate base resin, acetate vinyl chloride resin, acrylic resin, polyurethane, epoxy and phenolic resin, the consumption of this toughener is less than 2 weight %.
11. being used to of claim 7 prevents fires and the coating composition of sound insulation purposes, wherein retarding agent is selected from following one or several: animal proteinum or carbohydrate, the consumption of this retarding agent is less than 2 weight %.
12. being used to of claim 7 prevents fires and the coating composition of sound insulation purposes, wherein antiseptic-germicide is selected from following one or several: oxybenzene compound, organo-tin compound, organomercury compound, triaizine compounds, quaternary ammonium salt, sulfo group pyridinium halide, Vancide 89 compound, organocopper compound, organic nitrogen compound, iodine compound, silver compound, chloronaphthalene, dehydroabietylamine Pentachlorophenol and pentachloro-lauroleate, the add-on of this antiseptic-germicide is less than 1 weight %.
CNB99106707XA 1998-05-15 1999-05-14 Coating composition for fire-preventing and acoustics use Expired - Fee Related CN1175062C (en)

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