WO2015088112A1 - 열발포성 도포제 및 그 제조방법 - Google Patents

열발포성 도포제 및 그 제조방법 Download PDF

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WO2015088112A1
WO2015088112A1 PCT/KR2014/004329 KR2014004329W WO2015088112A1 WO 2015088112 A1 WO2015088112 A1 WO 2015088112A1 KR 2014004329 W KR2014004329 W KR 2014004329W WO 2015088112 A1 WO2015088112 A1 WO 2015088112A1
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Prior art keywords
sugar
caramel
mixing
coating agent
weight
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PCT/KR2014/004329
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English (en)
French (fr)
Korean (ko)
Inventor
조남욱
Original Assignee
한국건설기술연구원
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Priority claimed from KR20130153444A external-priority patent/KR101494801B1/ko
Application filed by 한국건설기술연구원 filed Critical 한국건설기술연구원
Priority to JP2016538758A priority Critical patent/JP6216461B2/ja
Priority to CN201480067718.0A priority patent/CN105829477B/zh
Publication of WO2015088112A1 publication Critical patent/WO2015088112A1/ko

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3878—Low-molecular-weight compounds having heteroatoms other than oxygen having phosphorus
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00—Manufacture of cellular products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2150/00—Compositions for coatings
    • C08G2150/60—Compositions for foaming; Foamed or intumescent coatings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon

Definitions

  • the present invention relates to a heat-foamable coating agent, and more particularly, by preparing a mixture of sugar phosphate caramel or sugar silica caramel in expanded graphite, a heat-foamable coating agent that allows the adhesive to foam by heat in case of fire to form a foam insulation layer; It relates to a manufacturing method.
  • a sandwich panel is a building material used for a wall of a building, a structure, etc., It is manufactured by interposing insulation materials, such as styrofoam, between a pair of steel plates, and bonding a steel plate and an insulation material with an adhesive agent.
  • a flame retardant is applied to the surface of the styrofoam insulation material, a method of foaming the styrofoam with the flame retardant applied to the surface of each foamed granule, and a method of injecting a flame retardant into the interior of the styrofoam. Is improving.
  • an adhesive is used to bond the steel sheet and the heat insulator, and the adhesive is also very weak in flame retardancy, and when the steel sheet is exposed to a fire, the adhesive burns out immediately due to its heat, which causes heat of fire. There is a problem that is easily transferred to the insulation.
  • the adhesive Since the adhesive is considered to have a negligible effect on the flame retardancy of the sandwich panel, the flame retardancy of the adhesive has been overlooked. However, according to the experimental results, there has been a significant difference in the flame retardancy of the sandwich panel according to the degree of flame retardancy of the adhesive.
  • the polyurethane bond which is a conventional general adhesive, is weak to fire and is not easily extinguished once ignited, and is known to adversely affect the human body by toxic gas and black smoke.
  • a two-part adhesive prepared by mixing A liquid and B liquid in the Republic of Korea Patent Publication No. 2009-0114898, A liquid containing an isocyanate, B liquid containing a polyol, B An adhesive comprising 5 to 35 parts by weight of an expandable filler and a sandwich panel using the same are disclosed.
  • Korean Laid-Open Patent Publication No. 2008-0001702 discloses a heat-foaming flame-retardant coating agent that foams by heat to form a nonflammable carbonized layer.
  • the heat-expandable flame-retardant coating agent of the published patent is mixed with water-dispersible rubber (Latex), expanded graphite powder, melamine flame retardant, ammonium phosphate flame retardant, monosaccharides, disaccharides, sugars including one or more of polysaccharides and the like It is dispersed and contains no halogen-based flame retardant, it is a biodegradable material, maintains the elasticity of rubber and has flexibility to bend. It foams more than 50 times the coating thickness when it is in contact with flame, and harmful to the environment during combustion. It does not generate gas.
  • thermally foamable coating agents such as two-component adhesives or thermally foamable flame retardant coatings as described above were generally used to use a polyurethane foam or a mixture of expanded graphite, but simple mixing is the expansion of graphite in the event of a fire, Although it is formed, it is easily blown due to the low specific gravity and the absence of the binding force of the expanded graphite, which causes a disadvantage that the foam layer is scattered and does not form a continuous heat insulating layer.
  • the present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to utilize isocyanate and polyol which is used as an adhesive or a filler of a refractory filler structure of a panel such as a sandwich panel, a fire door, a firewall.
  • a thermally foamable coating agent having excellent fire resistance and a manufacturing method thereof by adding expanded graphite and sugar phosphate caramel or sugar silica caramel to automatically foam by heat in the event of fire in case of fire to maintain a foam shape without being scattered after foaming.
  • the thermally expandable coating agent according to the present invention for achieving the above object is made by mixing isocyanate and polyol, expandable graphite (Expandable Graphite), sugar phosphate caramel or sugar silica caramel and foamed by heat to form a heat insulating layer It is done.
  • One method for preparing a heat-foamable coating agent of the present invention comprises the steps of mixing sugar (Sucrose) and phosphoric acid (Phosphoric Acid) by sugar phosphate decomposition to form a sugar phosphate caramel; Mixing and stirring the sugar phosphate caramel, expanded graphite, and a dispersant in a polyol; And mixing isocyanate with the mixture of caramel saccharide and expanded graphite.
  • sugar Sugar
  • Phosphoric Acid phosphoric acid
  • Another method for preparing the thermally foamable coating agent of the present invention comprises the steps of preparing sugar silica caramel by adding and dissolving sugar in colloidal silica; Mixing and stirring the sugar silica caramel, expanded graphite, and a dispersant in a polyol; And mixing isocyanate with the mixture of sugar silica caramel and expanded graphite.
  • the thermally expandable coating agent using the expanded graphite and sugar phosphate decomposition reaction according to the present invention has the effect that the foamed form is maintained without being scattered by the plume pressure or the wind pressure of the fire.
  • thermally foamable coating agent having a high expansion ratio and having a hard carbide film to block toxic gases and excellent fire resistance.
  • FIG. 1 is a perspective view and an enlarged cross-sectional view of a fire resistant sandwich panel to which a heat-foaming coating agent according to the present invention is applied.
  • 2 is a diagram showing the molecular formula of sugar.
  • FIG. 3 is a flow chart illustrating a method of manufacturing a thermally expandable coating agent according to an embodiment of the present invention.
  • Figure 4 is a flow chart illustrating a method of manufacturing a thermally expandable coating agent according to another embodiment of the present invention.
  • the fire resistant sandwich panel 10 has a structure in which a core 12, which is a heat insulating material, is interposed between two steel sheets 11, and the core 12 is a heat applied to a surface of the steel sheet 11.
  • the foamable coating agent 13 is firmly bonded to the steel plate 11.
  • the thermally expandable coating agent 13 of the present invention functions as an adhesive.
  • the thermally expandable coating agent (13) is characterized in that the fire resistance by using expanded isocyanate and polyol while adding expanded graphite and sugar phosphate caramel or sugar silica caramel. More specifically, the thermally expandable coating agent 13 is a two-component adhesive prepared by reacting the liquid A and liquid B to the building structure (steel plate of the sandwich panel in this embodiment) in a predetermined ratio, and reacting the same.
  • the solution A is made of isocyanate
  • the solution B is made by adding expanded graphite and sugar phosphate caramel or sugar silica caramel to the polyol.
  • the thermally expandable coating agent 13 formed by mixing and stirring such liquids A and B has adhesiveness and thermal expansion properties, and is a separate viscous char (charcoal soot) so that the expanded graphite expanded by heat is not scattered.
  • charcoal soot viscous char
  • the heat-expandable coating agent 13 has the characteristic that the expanded graphite is foamed upon contact with heat by adding expanded graphite.
  • the foamed layer by expanded graphite can maintain the best effect when the foamed form is maintained without being scattered by the plume pressure or the wind pressure of the fire. In order to maintain such a foamed form is necessary to prevent mold collapse, in order to achieve the dual effect of preventing the scattering of the expanded graphite using the viscosity of the carbohydrate or sugar silica caramel in the present invention, also suppress the combustion. It was.
  • thermoly foamable coating agent of the present invention Referring to one embodiment of a method for producing a thermally foamable coating agent of the present invention as follows.
  • sugar generally corresponds to ⁇ -D-glucopyranosyl- ⁇ -D-fuructopranoside and is a sweet non-reducing disaccharide.
  • sugar beet is derived from sugar beet. It is found in all plants with photosynthetic capacity.
  • sugar produced in general is used.
  • Sugar is usually a disaccharide, the molecular formula is C 12 H 22 O 11 , the decomposition of the sugar by the heat is made as shown in [Formula 1] below.
  • Emission of a large amount of water according to the formula (1) is the specificity of sugar decomposition, such a sugar is environmentally harmless, it is easy to biodegrade when buried, there is an advantage that no harmful gas is produced even at combustion.
  • Some types of bacteria have sugar phosphate decomposition, which breaks down sugars into ⁇ -D-glucose-1-phosphate and D-fructose in the presence of phosphates.
  • the enzyme reaction for making sugar is known as a glycosyl transfer reaction from UDP-glucose to D-fructose or D-fructose-6-phosphate.
  • sugar synthase EC 2.4.1.13
  • sugar synthase EC 2.4.1.13
  • sugar phosphatase SPS, EC 2.4.1.14
  • Sugar phosphate a product, is irreversibly dephosphorized by phosphatase and becomes sugar.
  • Phosphoric acid decomposition refers to a reaction in which a phosphoric acid is added to a molecule to degrade.
  • An enzyme that catalyzes such R1-R2 + H3PO4 R1-OPO3H2 + R2H reaction is collectively referred to as phosphatase, and glycogen phosphatase is representative.
  • phosphatase since the phosphatase of sugar is used, since phosphatase is widely known in the industry, it is not described separately in the present invention.
  • FIG. 3 describes a method for producing a thermally foamable coating agent according to the present invention using such a phosphoric acid decomposition reaction.
  • step S1 20 to 70 parts by weight of phosphoric acid is mixed with 100 parts by weight of sugar as a disaccharide and reacted (step S1).
  • sugar phosphate decomposition reaction uses the above-mentioned sugar phosphate decomposition reaction, and dark brown sugar phosphate caramel is formed as a final product.
  • Sugar phosphate is in the form of sugar 6-phosphate, which uses Sucrose-Phosphate Synthase as an enzyme to catalyze this reaction.
  • the product, sugar 6-phosphate is amorphous and takes the form of an unknown caramel.
  • sugar phosphate caramel is to prevent such mold collapse. That is, since carbosaccharide is excellent in viscosity, it has a dual effect of preventing the scattering of expanded graphite and suppressing combustion.
  • a foam stabilizer or a reaction accelerator may be added as other additives.
  • foaming agent When foaming agent is used to make polyurethane foam, etc., emulsification (easy mixing of raw materials), promotion of cell growth (growing bubbles, lowering the pressure difference between bubbles, preventing the diffusion of gas, urethane cells become large and uneven To prevent the cell membrane from stabilizing (preventing problems such as cell breakage due to bubble destabilization, unification and thinning of the cell membrane when viscosity rises), and uniformity of product density.
  • the expanded graphite and dispersant are added to the sugar phosphate caramel to dilute and agitate to complete liquid B (step S2).
  • 200 to 800 parts by weight of polyol for urethane is diluted with 100 parts by weight of sugar phosphate caramel and stirred.
  • a nonionic surfactant such as ethylene oxide addition type surfactant may be used.
  • the polyol for urethane is usually an initiator such as a polyfuntional alcohol or an aromatic amine having at least two hydroxyl groups (Hyroxyl Group, -OH) or an amine group (-NH2), and propylene oxide (Propylene).
  • an initiator such as a polyfuntional alcohol or an aromatic amine having at least two hydroxyl groups (Hyroxyl Group, -OH) or an amine group (-NH2), and propylene oxide (Propylene).
  • a substance obtained by reacting Oxide, PO) or ethylene oxide (Ethylene Oxide, EO) under appropriate conditions is used.
  • polyols are broadly classified into polyether polyols and polyester polyols, and according to the present invention, polyols may be appropriately selected and used.
  • Expandable Graphite refers to the formation of the graphite interlayer compound through the chemical treatment of natural scale graphite. When the compound receives heat, it expands together with the chemical component to form a kind of film.When the styrofoam or urethane containing expanded graphite is heated, that is, when a fire occurs, the expanded film acts as a protective film and thus a flame retardant effect. Will cause. The foamed layer by the expanded graphite is maintained in the foamed form without being scattered by the plume pressure or the wind pressure of the fire. Expanded graphite, also known as soft graphite, is widely used in the industry, and thus a detailed description thereof will not be given here.
  • step S2 the solution produced by mixing sodium octaborate tetrahydrate in solid phase with metasilicate on colloid is added to the second step (step S2) to enhance flame retardancy.
  • This sodium octaborate solution serves to suppress the combustion of the combustible substrate and to assist the Char formation when the adhesive component or the combustion component is mixed.
  • sodium octaborate solution When the sodium octaborate solution is formed, 10 to 40 parts by weight of the metasilicate colloidal phase is mixed with respect to 100 parts by weight of sodium octaborate.
  • sodium octaborate solution thus prepared is mixed with caramel phosphate, 10 to 50 parts by weight of sodium silicate solution is added to 100 parts by weight of caramel phosphate caramel.
  • petroleum or petrolatum may be added to maintain the viscosity of the liquid B.
  • Step S3 After spraying the B liquid made of the polyol mixture for carbosaccharide and urethane polyol and A isocyanate as a main component on a steel sheet, mixing and reacting with a mixing plate to produce a thermally foamable coating agent while expanding to a certain degree (Ste S3).
  • methylene diphenyl diisocyanate (MDI) was used as isocyanate.
  • Methylene diphenyl diisocyanate is an aromatic diisocyanate chemical here. Methylene diphenyl diisocyanate is largely divided into MDI monomer and Polymeric MDI.
  • the MDI monomer is composed of three isomers of 2,2'-MDI, 2,4'-MDI, and 4,4'-MDI. Esau selects and uses any one of three isomers or mixtures thereof to suit its purpose.
  • the sandwich panel is manufactured by placing the core material 12 thereon and applying pressure thereto.
  • the liquid A and B constituting the heat-expandable coating agent 13 is applied between the steel plate 11 and the core material 12 of the sandwich panel and adhered (step S4), and the final result is a flame retardant material or Semi-combustible material will be realized.
  • the manufacturing process of the sandwich panel is the same as the existing coating and bonding method, it is excellent in workability, it is possible to adjust the coating amount according to the flame retardant performance.
  • Experimental results by the applicant it was confirmed that the 200 to 1000 g / m 2 is good.
  • sugar silica caramel is prepared by adding 50 to 80 parts by weight of sugar to 100 parts by weight of colloidal silica to dissolve it (step S11).
  • step S12 15 to 30 parts by weight of sugar silica caramel and 20 to 50 parts by weight of expanded graphite are added to 100 parts by weight of a polyol having a molecular weight of 1000 g / mol to 3000 g / mol and stirred.
  • the solution B is completed by adding a surfactant, a solvent, a flame retardant, a catalyst, and an auxiliary agent to the product produced through step S12, followed by stirring (step S13).
  • a surfactant e.g., sodium octaborate
  • a solvent e.g., sodium octaborate
  • a flame retardant e.g., sodium octaborate
  • a catalyst equently, the solution B is completed by adding a surfactant, a solvent, a flame retardant, a catalyst, and an auxiliary agent to the product produced through step S12, followed by stirring (step S13).
  • the sodium octaborate solution generated by mixing the solid sodium octaborate tetrahydrate to the meta silicates on the colloid may be added.
  • one or more of petroleum or petrolatum may be further added to maintain the viscosity of the liquid B.
  • the liquid B prepared as described above and the liquid A consisting of isocyanate are sprayed on a steel plate in an actual process line and stirred through a mixing plate to start a urethane reaction and expand (step S14), using the adhesive formed at this time.
  • the method of manufacturing the panel is the same as the existing coating and bonding method, but in order to produce a flame retardant or semi-non-flammable panel, a coating amount of 200 to 1000 g / m 2 is required depending on the flame retardant performance.
  • thermally foamable coating agent of the present invention when the thermally foamable coating agent of the present invention is applied to a building structure such as a sandwich panel, foaming is performed by heat during a fire to suppress the generation of flame and to block the heat, and B of the thermally foamable coating agent 13 Due to the excellent viscosity of the sugar phosphate caramel or sugar silica caramel added to the liquid, it is possible to obtain the dual effect of preventing the scattering of the expanded graphite and suppressing combustion.
  • the heat-expandable coating agent of the above-described embodiment and A liquid containing an isocyanate; Polyol, Expandable Graphite, and B liquid containing sugar phosphate caramel or sugar silica caramel were individually applied to a building structure (steel plate of sandwich panel), and then stirred and reacted to prepare a thermally foamable coating agent.
  • a thermally foamable coating agent may be prepared by directly mixing an isocyanate-containing solution with a mixture of polyol, expandable graphite, and sugar phosphate caramel or sugar silica caramel, and then applying it to a building structure.
  • the heat-foaming coating agent of the above-described embodiment was applied as a heat-foaming adhesive that attaches the core of the sandwich panel to the steel sheet and forms a foam insulation layer in case of fire, but can also be applied to the honeycomb reinforcement of the fire door or a flame retardant / shielding coating.
  • the heat-foaming adhesive of the present invention can be usefully applied to foaming fillers, such as fire-resistant filling structure to prevent the penetration of flame or harmful gas by filling the pipe and the bottom surface of the apartment or building or between the pipe and the wall.
  • the present invention can be applied to sandwich panels, firewalls, fire doors, building panels, refractory filling structures for preventing harmful gas and flame penetration between pipes and floors or pipes and walls.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
PCT/KR2014/004329 2013-12-10 2014-05-14 열발포성 도포제 및 그 제조방법 WO2015088112A1 (ko)

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