KR20160071140A - Constructing method of polyurethane flame retardant ground materials - Google Patents

Abstract

The present invention relates to a constructing method of a flame retardant polyurethane flooring material, and more particularly, to a constructing method of a flame retardant polyurethane flooring material, enabling construction of the flame retardant polyurethane flooring material with only five steps which includes: a surface treatment process; a first primer application process; a non-combustible material stacking process; a second primer application process; and an application process of a ′flame retardant polyurethane flooring material composition′ which is previously registered (Korean Patent Publication No. 10-1454357) by the applicant of the present invention. The present invention relates to the constructing method of the flame retardant polyurethane flooring material, capable of reducing air and a weight. In addition, by using the ′flame retardant polyurethane flooring material composition′ which is previously registered by the applicant of the present invention as described above, supplying at low costs is possible, costs for repairing are also not consumed due to lack of a crack or a desorption phenomenon, slip resistance is shown even when exposed to a haze or sea water during a voyage, and particularly, flame retardancy is improved such that flame propagation ability, smokability, and toxicity satisfies a national defense standard (KDS 7220-4001).

Description

TECHNICAL FIELD [0001] The present invention relates to a polyurethane flame retardant flooring material,

The present invention reduces the air and weight by reducing the construction process of the flame retardant flooring material to 5 levels by using the 'polyurethane flame retardant flooring composition' obtained by the applicant of the present invention (Korean Registered Patent No. 10-1454357) To a polyurethane flame retardant flooring material.

In the case of naval and maritime vessels in general, the main purpose is to combat combat, maritime safety and rescue, so that crew members can cause serious damage to knees and human body due to rapid movement and action in the event of a situation.

Therefore, the bottom of the vessel is usually constructed of polyurethane having a soft hardness in order to prevent the floating of a crew member, and Patent Documents 1 and 2 are related related arts.

However, since the conventional polyurethane flooring is weak to flame and smoke is generated in a large amount when a fire occurs, development of a polyurethane flooring added with flame retardant performance is required.

On the other hand, in the case of the polyurethane flooring having the flame retardancy as described above, since products manufactured by American Safety Corporation of the United States conform to international standards as in non-patent document 1, Import and construction.

However, the products manufactured by American Safety Corporation in the United States will cost about 500,000 won per 1m X 1m, cost about 5 billion won per ship, There is a problem that the maintenance cost is continuously consumed because cracks and detachment phenomena frequently occur due to the shrinkage and relaxation.

In addition, since it is relatively vulnerable to fire, there is a disadvantage that it leads to a large loss in the case of a fire in a ship, and when it is exposed to fogging or sea water during the voyage, the slip resistance is not exhibited.

In order to solve this problem, the applicant of the present invention has previously registered a 'polyurethane flame retardant flooring composition' as in Patent Document 3.

The 'polyurethane flame retardant flooring composition' previously registered by the applicant of the present invention is prepared by preparing a polyurethane flame retardant flooring composition by mixing a subject and a curing agent and then preparing a polyurethane flame retardant flooring composition using the polyurethane flame retardant flooring composition as described above However, by mixing the flame retardant into the above-mentioned curing agent, flame propagation, flame retardancy and toxicity are improved to meet the National Defense Standard (KDS 7220-4001).

Meanwhile, products manufactured by American Safety Corporation of the United States are manufactured in nine steps (surface treatment process (A100), corrosion-resistant primer application process (A200), adhesive application (A300), the epoxy underlayer forming step (A400), the epoxy primer coating step (A500), the epoxy intermediate film forming step (A600), the polymer decorative layer forming step (A700) and the first epoxy sealing coating step (Second operation with the second epoxy seal coating process (A900) after the car work), and thus the air is excessively consumed, and the weight is heavy.

Accordingly, the applicant of the present invention has found that by reducing the construction process of the flame-retardant flooring material to 5 stages by using the 'polyurethane flame retardant flooring composition' obtained by the applicant of the present invention (Korean Registered Patent No. 10-1454357) Completed.

Patent Document 1: Korean Patent Laid-Open Publication No. 10-2013-0067577 "Flame Retardant Urethane Composition" Patent Document 2: Korean Utility Model Registration No. 20-0263325, "Nonflammable composite panel and nonflammable composite panel using the same" Patent Document 3: Korean Patent Registration No. 10-1454357 entitled "Polyurethane flame retardant flooring composition"

Non-Patent Document 1: Product introduction page (http://www.astantislip.com/products.php) of American Safety's homepage of USA

The present invention relates to a method for producing a polyurethane resin composition, which comprises five steps of a surface treatment process, a first primer application process, a non-burnable material lamination process, a second primer application process, and a 'polyurethane flame retardant bottom material composition' application process pre- It is an object of the present invention to enable air and weight to be reduced by allowing the construction of the flame retardant flooring.

The present invention relates to a polyurethane flame retardant flooring method, comprising: a surface treatment step (S100) of removing foreign matter formed on a floor surface; A first primer coating step (S200) for bonding the bottom surface and the non-burnable material; Non-burnable material lamination process (S300); A second primer applying step (S400) for adhering the non-burnable material and the polyurethane flooring composition; And a polyurethane flame retardant coating composition (S500). The polyurethane flame retardant coating method of the present invention is a solution to the problem.

Here, the nonflammable material is preferably composed of 5 to 30 parts by weight of alumina cement mixed with 100 parts by weight of the lightweight aggregate.

The polyurethane flame retardant flooring composition is a polyurethane flame retardant flooring composition obtained by the applicant of the present invention (Korean Registered Patent Application No. 10-1454357), and comprises a part (A part, prepolymer) and a flame retardant And 400 parts by weight of a chain extender or a cross-linking agent, 600 parts by weight of a plasticizer, 400 parts by weight of an isocyanate 400 400 parts by weight of a chain extender or a crosslinking agent, 600 parts by weight of a plasticizer, 400 parts by weight of a pigment, 1000 parts by weight of a flame retardant, 200 parts by weight of a solvent, 100 parts by weight of a polyetherpolyol, 60 parts by weight of a curing agent additive, and 60 parts by weight of a reactive catalyst, wherein the chain extender or cross-linking agent is selected from the group consisting of ethylene glycol (EG), propylene glycol (PG) Recall (DEG), dipropylene glycol (DPG), butylene glycol (BG), sorbitol, glycerine, trimethylolpropane (TMP), pentaerythrityl triol (Pentaerythritol) or methylene bis 2-chloroaniline (MOCA) (DOP), dioctyl adipate (DOA), dibutyl phthalate (DBP), or diisobutyl phthalate (DIBP). The plasticizer may be used alone or in combination of two or more. Wherein the isocyanate is at least one selected from the group consisting of methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), hexamethylene diisocyanate (HMDI), isophorone diisocyanate (IPDI), meta xylene diisocyanate MXDI) Diisocyanate (H12 MDI) or xylene diisocyanate (XDI) made by adding hydrogen to a benzene ring of tetramethyl xylene diisocyanate (TMXDI) and methylene diphenyl diisocyanate (MDI) (Hydrogenated XDI) prepared by adding hydrogen to a benzene ring and made into an alicyclic group, Phosphates, phosphine oxides, phosphine oxide diols, phosphites, phosphonates, trialkyl phosphates, alkyldiaryls, phosphonates, phosphonates, phosphates, It may be used alone or in combination of two or more of the following compounds: Alkyldiaryl phosphate, Triaryl phosphate, Resorcinol bisphenyl phosphate (RDP), aluminum hydroxide, antimony oxide, magnesium hydroxide or boron- (H ₃ PO ₄ ), and the reactive catalyst used in the curing agent is triethylenediamine (TEDA) and 1,4-diazabicyclo [2.2 2] octene (1,4-diazabicyclo [2.2.2] octane), a dialkyltin dicarboxylate which is a carboxylate or an organotin compound of an alkali metal and quaternary ammonium, Or more used in combination with, and the pigments. And is used in combination with at least one of titanium oxide (TiO ₂ ), carbon black, iron oxide yellow, iron oxide red, heavy carbon or silica, and the solvent is at least one selected from the group consisting of xylene, toluene, methyl ethyl Ketone or methyl isobutyl ketone, and the above-mentioned additives for the curing agent are preferably used either singly or in combination of two or more among a dispersant, a defoaming agent or a precipitation inhibitor.

The present invention relates to a method for producing a polyurethane resin composition, which comprises five steps of a surface treatment process, a first primer application process, a non-burnable material lamination process, a second primer application process, and a 'polyurethane flame retardant bottom material composition' application process pre- By allowing the construction of the flame-retardant flooring material, air and weight can be reduced.

In addition, by using the 'polyurethane flame retardant flooring composition' previously registered by the applicant of the present invention as described above, it is possible to supply at low cost, and there is no phenomenon of cracking or detachment, and maintenance cost is not consumed. The flame retardancy can be improved by satisfying the Defense Standard (KDS 7220-4001), such as flame propagation, flame retardancy and toxicity, especially when exposed to seawater.

FIG. 1 is a flow chart of a polyurethane flooring construction method using a product manufactured by American Safety Corporation of the United States
FIG. 2 is a flow chart of a method of constructing a polyurethane flame retardant flooring material according to the present invention
Fig. 3 is a photograph showing the result of the cold repeat test, the accelerated weathering resistance test and the flame resistance test in Examples and Comparative Examples according to the present invention

In order to accomplish the above-mentioned effects, the present invention relates to a polyurethane flame-retardant flooring material construction method, wherein only parts necessary for understanding the technical construction of the present invention are explained, and the description of other parts is omitted so as not to disturb the gist of the present invention .

Hereinafter, a method of constructing a polyurethane flame retardant flooring according to the present invention will be described in detail.

2, the method for manufacturing a polyurethane flame retardant flooring material according to the present invention includes a surface treatment step (S100), a first primer coating step (S200), a nonflammable material laminating step (S300), a second primer coating step S400) and a polyurethane flame retardant coating composition (S500).

The surface treatment step (S100) is a step of cleaning the bottom surface of the ship to which the bottom material is to be applied, and removes various foreign substances and the like formed on the bottom surface.

The first primer coating step (S200) is a step for bonding the bottom surface and a non-burnable material to be described later and is applied in a thickness of 0.1 to 1.0 mm, but the coating thickness corresponds to the material of the bottom surface or the environment of use or the thickness of the non- And can be variously varied.

Meanwhile, the primer to be used may be a high-urethane primer of Jeongseok Chemical Co., Ltd. or an epoxy primer of the company, which is used for flooring construction, but is not limited thereto. Primers can be selected and used.

The nonflammable material lamination step (S300) is a step for improving the incombustibility of the bottom material by laminating the non-burnable material on the bottom surface coated with the first primer, 30 parts by weight are mixed.

The lightweight aggregate is an aggregate having a specific gravity of less than 2.50 when the aggregate is divided according to the specific gravity. In the present invention, an artificial lightweight aggregate such as slate, slag, fly ash, vermiculite or puffed clay can be applied.

In addition, the alumina cement is a cement mixed with aluminum oxide in an amount of 30 to 40% by weight, which is excellent in fire resistance. On the other hand, when the content of the alumina cement is less than 5 parts by weight, there is a fear that the nonflammable material is not properly formed, and when it is more than 30 parts by weight, the durability of the flooring material may decrease.

Further, the non-burnable material having the above-described thickness has a thickness of 3 to 50 mm, but its thickness can be variously changed depending on the material of the bottom surface, the use environment, or the coating thickness of the polyurethane flame retardant flooring composition to be described later.

The second primer coating step (S400) is a step for bonding the nonflammable material and the polyurethane flooring composition, and is applied in a thickness of 0.1 to 1.0 mm. However, the coating thickness is not limited to the material of the bottom surface or the use environment, And can be variously varied corresponding to the coating thickness of the flooring composition.

Meanwhile, the primer to be used may be a high-urethane primer of Jeongseok Chemical Co., Ltd. or an epoxy primer of the company, which is used for flooring construction, but is not limited thereto. Primers can be selected and used.

The polyurethane flame retardant coating composition (S500) may be applied to a floor material without causing cracking or detachment of the flooring material and exhibiting slip resistance. In addition, the flame retarding property, ductility, -4001), and it is applied in a thickness of 1.0 to 5.0 mm. However, the coating thickness may vary depending on the material of the bottom surface, the use environment, and the like.

The 'polyurethane flame retardant flooring composition' obtained by the applicant of the present invention (Korean Registered Patent No. 10-1454357) is used.

Specifically, the polyurethane flame retardant flooring composition is formed by blending a part (A part, prepolymer) and a curing agent (B part, resin binder) mixed with a flame retardant.

More specifically, the polyurethane flame retardant flooring composition is prepared by blending a mixture of a subject and a curing agent in a weight ratio of 1: 4. If the blending ratio of the curing agent and the mixture exceeds the above range, use of the composition as a flooring may become difficult.

The subject matter consists of 400 parts by weight of chain extender or crosslinking agent, 600 parts by weight of plasticizer, 400 parts by weight of isocyanate and 0.06 part by weight of catalyst, based on 100 parts by weight of polyether polyol.

The polyether polyol used in the subject matter preferably has a weight average molecular weight of 450 to 3000 and has 2 or 3 OH functional groups.

The chain extender or cross-linking agent used in the above subject is a reactive monomolecule used for strengthening polymerization or intermolecular bonding and is a bifunctional substance such as a diol or a diamine as a chain extender, Triol, tetraol, and polyamine are referred to as cross-linking agents.

Examples of the chain extender or crosslinking agent include ethylene glycol (EG), propylene glycol (PG), diethylene glycol (DEG), dipropylene glycol (DPG), butylene glycol (BG), sorbitol, glycerin, trimethylolpropane ) Or pentaerythritol may be used alone or in combination of two or more.

On the other hand, if the content of the chain extender or crosslinking agent is less than 400 parts by weight based on 100 parts by weight of the polyether polyol, the function of strengthening the intermolecular bonding may be insufficient. If the content of the chain extender or crosslinking agent exceeds 400 parts by weight, There is a possibility that this may become bad.

The plasticizer used in the above-mentioned subject is added to improve the plasticity. It is used alone or in combination with 2 or more of dioctyl phthalate (DOP), dioctyl adipate (DOA), dibutyl phthalate (DBP) or diisobutyl phthalate If the content of the plasticizer is less than 600 parts by weight based on 100 parts by weight of the polyether polyol, the effect of improving the plasticity may be insufficient. If the plasticizer content exceeds 600 parts by weight, the physical properties and appearance of the flooring material There is a possibility that it becomes bad.

The isocyanate used in the above-mentioned subject is added to prepare a flip-polymer by reacting with the polyol, and is selected from the group consisting of methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), hexamethylene diisocyanate (HMDI) Diisocyanates made of alicyclic groups by adding hydrogen to benzene rings of furandiisocyanate (IPDI), meta xylene diisocyanate (MXDI) tetramethyl xylene diisocyanate (TMXDI), and methylene diphenyl diisocyanate (MDI) (H12 MDI) or a diisocyanate (hydrogenated XDI) prepared by adding hydrogen to a benzene ring of xylene diisocyanate (XDI) in an alicyclic group, or a combination of two or more thereof, and diphenylmethane diisocyanate `-Diphenylmethane diisocyanate, MDI) is used, and diisocyanate such as toluene diisocyanate (TDI) is also used The. In this case, MDI and MDI prepolymer may be used as monomers. NCO% is preferably in the range of 20 to 33%, and when TDI is also used as the prepolymer, NCO% is preferably in the range of 4.5 to 10%.

On the other hand, when the content of the isocyanate is less than 400 parts by weight based on 100 parts by weight of the polyether polyol, the prepolymer may not be synthesized properly. When the content of the isocyanate exceeds 400 parts by weight, flame retardancy There is a possibility that it will not.

When the catalyst to be used in the subject is said to be to improve the reactivity of each composition, phosphoric acid (H ₃ PO ₄₎ the uses, the amount of the catalyst with respect to the polyether polyol 100 parts by weight, 0.06 parts by weight is less than the reactive It is difficult to expect an improvement effect. If it exceeds 0.06 part by weight, the physical properties of the flooring material may be poor.

400 parts by weight of a chain extender or a crosslinking agent, 600 parts by weight of a plasticizer, 400 parts by weight of a pigment, 1000 parts by weight of a flame retardant, 200 parts by weight of a solvent, 60 parts by weight of a curing agent additive, 60 parts by weight.

The polyether polyol, chain extender or cross-linking agent, and plasticizer used in the curing agent are omitted because they have already been described above in the description of the above-mentioned subject.

However, the chain extender or cross-linking agent used in the curing agent may be at least one selected from the group consisting of ethylene glycol (EG), propylene glycol (PG), diethylene glycol (DEG), dipropylene glycol (DPG), butylene glycol (BG), sorbitol, In addition to trimethylol propane (TMP) and pentaerythritol, methylene bis-2-chloroaniline (MOCA) may be used alone or in combination with two or more of them as a curing agent.

The pigments used for the curing agent are added to impart color to the flooring material and serve as a filler. These pigments include titanium dioxide (TiO ₂ ), carbon black, iron oxide yellow, iron oxide red, Silica. When the content of the pigment is less than 400 parts by weight based on 100 parts by weight of the polyether polyol, the function of the pigment may be insufficient. When the amount of the pigment exceeds 400 parts by weight There is a possibility that the physical properties and appearance of the flooring become poor.

The flame retardant used in the curing agent is added to impart flame retardancy to the polyurethane flame retardant composition according to the present invention, and a phosphorus compound and an inorganic flame retardant are used. Halogen compounds are effective mainly in the gas phase reaction, while the phosphorus flame retardant is a solid phase reaction And it is effective for urethane flooring and paint containing a large amount of oxygen. On the other hand, the phosphorus flame retardant firstly produces polyphosphoric acid by pyrolysis, which is esterified and dehydrogenated to produce char, and the resulting char is able to block oxygen and heat. Polyphosphoric acid, a nonvolatile polymer, has the effect of reducing the thermal decomposition reaction by blocking oxygen and latent heat by forming a carbon layer. In addition, the addition of a substance such as phosphine to polyphosphoric acid helps to form a char, which prevents carbon from being oxidized to form carbon monoxide and carbon dioxide, thereby reducing afterglow. The flame retardant containing phosphorus may be phosphorus, phosphine oxide, phosphine oxide diol, phosphite, or phosphonate. Due to the red color of the flame retardant itself, the compound water is reddish and its use is limited. There is no silver toxicity and is thermally stable, but caution is required if contact with water is toxic and emits phosphine gas, which is a potentially explosive hazard in a confined space. Phosphate flame retardants include Trialkyl phosphate, Alkyldiaryl phosphate and Triaryl phosphate in monomeric form and Resorcinol bisphenyl phosphate in the form of oligomer RDP). Among the inorganic flame retardants, aluminum hydroxide, antimony oxide, magnesium hydroxide and boron-containing compounds are the most frequently used. Unlike organic flame retardants, inorganic flame retardants are not volatilized by heat and decompose to release gases such as water, carbon dioxide, dioxide, and hydrochloric acid, and are mostly endothermic. In the gas phase, the combustible gas is diluted and the plastic surface is applied to prevent access to oxygen. At the same time, there is an effect of reducing the generation of plastic cooling and pyrolysis products through the endothermic reaction at the surface of the solid phase. In addition, in the case of a boron compound, a glass-like protective layer on the surface of a solid is formed to block oxygen and heat. Aluminum hydroxide is the most used inorganic flame retardant because it is inexpensive and easy to inject.

On the other hand, when the content of the flame retardant is less than 1000 parts by weight based on 100 parts by weight of the polyether polyol, the flame retardancy may be insufficient. When the content is more than 1000 parts by weight, And there is a fear that the physical properties of the bottom material may become poor.

The solvent used for the curing agent is added in order to improve the moldability and workability by controlling the viscosity of the composition, and may be used alone or in combination of two or more among xylene, toluene, methyl ethyl ketone or methyl isobutyl ketone, If the content of the solvent is less than 200 parts by weight based on 100 parts by weight of the polyether polyol, it is difficult to expect an improvement in moldability and workability. If the content of the solvent exceeds 200 parts by weight, There is a fear that it becomes poor.

The additives for the curing agent can be appropriately selected and used by appropriately selecting a known agent such as a dispersant, a defoaming agent, and a precipitation inhibitor in consideration of the molding of the flooring material, the working environment, the use environment and the kind of the composition. For example, BYK-9076 (BYK Chemie), BYK-054 and BYK-066 (N) (BYK Chemie) as antifoaming agents, and Pangel B-20 (EM Sullivan Associates) as antisettling agents.

On the other hand, it is preferable that 60 parts by weight of the additive for the curing agent is used as 100 parts by weight of the polyether polyol.

The reactive catalyst used in the curing agent may be a cha-amine, an aprotic salt, or an organometallic compound, which is added to promote the urethane reaction and improve the conversion rate. As the tertiary amine, triethylene diamine (TEDA) and 1,4-diazabicyclo [2.2.2] octane can be used. As the aprotic salt, quaternary ammonium and carboxylate salts of an alkali metal can be used, and as the organometallic compound, organic tin compounds such as dialkyltin decarboxylate can be used.

On the other hand, if the content of the reactive catalyst is less than 60 parts by weight based on 100 parts by weight of the polyether polyol, the reaction promoting effect may be insufficient. If the amount is more than 60 parts by weight, physical properties of the bottom material may be poor.

Therefore, the present invention can be applied to a surface treatment process (S100), a first primer coating process (S200), a nonflammable material lamination process (S300), a second primer coating process (S400) The polyurethane flame retardant flooring material can be applied only by five steps of the urethane flame retardant flooring composition 'application step (S500), and the air and the weight can be reduced. In addition, as described above, By using the 'polyurethane flame retardant flooring composition', it is possible to supply at low cost, and there is no cracking or desorption phenomenon, so that the maintenance cost is not consumed. In addition, the slip resistance can be expressed even when exposed to misting or seawater during navigation, Flame propagation, flammability and toxicity can be improved by satisfying the National Defense Standard (KDS 7220-4001).

Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited to the examples.

1. Construction of polyurethane flame retardant flooring

(Example 1)

The first primer is applied to a thickness of 0.1 mm (S200), and a non-burned material having a thickness of 3 mm is laminated on the upper surface of the first primer (S300). Then, the second primer (S400), and a polyurethane flame retardant flooring composition was applied to the upper surface of the polyurethane flame retardant flooring composition to a thickness of 1.0 mm (S500) to prepare a polyurethane flame retardant flooring material.

The first primer used was a high-urethane primer (product name) manufactured by Jungseok Chemical Co., Ltd., the second primer used was an epoxy primer (product name) manufactured by the same company, and the non-burnable material was lightweight And 5 parts by weight of alumina cement was mixed with 100 parts by weight of the aggregate. The polyurethane flame retardant flooring composition was prepared by mixing 400 parts by weight of butylene glycol, 600 parts by weight of dioctyl phthalate, 400 parts by weight of isocyanate and 0.06 part by weight of phosphoric acid (H ₃ PO ₄ ) were fed into a four-necked reactor at a time. While the temperature was gradually raised while nitrogen was continuously fed, the temperature was raised to 60 ° C., When the temperature reached 79 캜, it was maintained for 4 hours, and the target NCO% was reached. 400 parts by weight of methylene bis 2-chloroaniline (MOCA) was dissolved in 600 parts by weight of dioctyl phthalate (DOP) at a high temperature, and then 100 parts by weight of polyether polyol, 400 parts by weight of titanium dioxide (TiO ₂ ) and 200 parts by weight of xylene Minute, and 1000 parts by weight of phosphate was added thereto. The mixture was dispersed for about one hour using a basket mill and stopped when the degree of softening reached about 3, and 20 parts by weight of BYK-9076 (BYK Chemie) 20 parts by weight of BYK-054, 20 parts by weight of Pangel B-20 and 60 parts by weight of triethylene diamine (TEDA), and the mixture was stirred at a medium speed for about 30 minutes to prepare a curing agent. By weight.

(Example 2)

After removing the foreign materials on the bottom surface (S100), the first primer is applied to a thickness of 1.0 mm (S200), and a non-burnable material having a thickness of 50 mm is laminated on the top surface (S300) Was applied in a thickness of 1.0 mm (S400), and a polyurethane flame retardant flooring composition was applied on the upper surface thereof to a thickness of 5.0 mm (S500) to construct a polyurethane flame retardant flooring.

The first primer used was Epoxy Primer (product name) manufactured by Jungseok Chemical Co., Ltd., and the second primer was a high urethane primer (product name) manufactured by the same company. The non-burnable material was lightweight And 100 parts by weight of an aggregate were mixed with 30 parts by weight of alumina cement. The polyurethane flame retardant flooring composition was prepared by mixing 400 parts by weight of butylene glycol, 600 parts by weight of dioctyl phthalate, 400 parts by weight of diisocyanate and 0.06 part by weight of phosphoric acid (H ₃ PO ₄ ) were put into a four-necked reactor at a time. While slowly introducing nitrogen into the four-necked reactor, the temperature was gradually raised. When the temperature reached 60 ° C, Reaches 79 < 0 > C, it is maintained for 4 hours and reaches the target NCO%. , A mixture of methylene bis 2-chloroaniline (MOCA) 400 parts by weight of dioctyl phthalate (DOP) 600 parts by weight was dissolved at elevated temperature a polyether polyol 100 parts by weight of titanium dioxide (TiO ₂₎ 400 parts of weight parts of xylene and 200 parts by weight After dispersing at a high speed for about 60 minutes, 1000 parts by weight of phosphate was added and dispersed for about one hour by using a basket mill. When the degree of softening became about 3, the mixture was stopped. 20 parts by weight of BYK-9076 (BYK Chemie) , 20 parts by weight of BYK-054, 20 parts by weight of Pangel B-20 and 60 parts by weight of triethylene diamine (TEDA), and the mixture was stirred at a medium speed for about 30 minutes to prepare a curing agent. 4 were used.

(Comparative Example 1)

(A100), a corrosion-resistant primer was applied to a thickness of 0.1 mm (A200), an adhesive was applied to the upper surface of the adhesive layer to a thickness of 0.1 mm (A300), and then an epoxy primer layer (A400). An epoxy primer was applied to the top surface (A500) at a thickness of 0.1 mm (A500) to form an epoxy intermediate film to a thickness of 3 mm (A600) (A700). A first epoxy sealant coating (A800) and a second (A900) coating were applied to the upper surface of the substrate to a thickness of 1 mm to form a polyurethane flooring.

The anticorrosive primer used was MS-7CZ (product name) manufactured by American Safety Company of USA, BC-100 (product name) of the same company was used as the adhesive, MS-1600 (product name) of the same company was used as the epoxy interlayer, and the CF layer of the same company was used as the epoxy primer. -100 (product name) was used, and the epoxy sealing cushioning agent was SC-100 (product name) of the same company.

2. Evaluation of polyurethane flame retardant flooring

The polyurethane flame retardant flooring constructed by the construction method according to Example 1 and Comparative Example 1 was evaluated based on the following Defense Standard (KDS 7220-4001) and the test method as follows, and the results are shown in Table 1 below .

Item Defense Standard
(KDS 7220-4001) Example 1 Example 2 Comparative Example 1 weight ? 1.47 g / cm ² ? 0.90 g / cm ² ? 0.90 g / cm ² ? 1.81 g / cm ² Heat resistance
flow ≤1.6 mm ≤0.79mm ≤0.79mm X softening none none none X friction
Coefficient


Static friction
(Rubber) Dry: ≥0.6,
Wet: ≥0.7,
Oily: ≥0.3 Dry: ≥0.6,
Wet: ≥0.7,
Oily: ≥0.3 Dry: ≥0.6,
Wet: ≥0.7,
Oily: ≥0.3 X Dynamic friction
(Rubber) Dry: ≥0.4
Wet: ≥0.7
Oily: ≥0.1 Dry: ≥0.4
Wet: ≥0.7
Oily: ≥0.1 Dry: ≥0.4
Wet: ≥0.7
Oily: ≥0.1 X Static friction
(leather) Dry: ≥0.6
Wet: ≥0.5 Dry: ≥0.6
Wet: ≥0.5 Dry: ≥0.6
Wet: ≥0.5 X Dynamic friction
(leather) Dry: ≥0.3
Wet: ≥0.4 Dry: ≥0.3
Wet: ≥0.4 Dry: ≥0.3
Wet: ≥0.4 X Cold Repetition Test Crack, peeling, corrosion
none Crack, peeling, corrosion
none Crack, peeling, corrosion
none has exist Solvent resistance Weight: ≤2%
Volume: ≤3% Weight: ≤2%
Volume: ≤2% Weight: ≤2%
Volume: ≤2% X Accelerated weathering Discoloration, cracking, deterioration
none Discoloration, cracking, deterioration
none Discoloration, cracking, deterioration
none has exist Saltwater Withdrawal, separation,
No corrosion, no corrosion Withdrawal, separation,
No corrosion, no corrosion Withdrawal, separation,
No corrosion, no corrosion has exist Abrasion resistance ≤1.27 mm ≤1.27 mm ≤1.27 mm X adhesion
burglar
Early ≥1,723KPa ≥1,723KPa ≥1,723KPa X Oxygen exposure ≥ 70% of the initial value ≥ 70% of the initial value ≥ 70% of the initial value X Cold repeat ≥ 70% of the initial value ≥ 70% of initial value ≥ 70% of the initial value X Fire resistance

flame
Propagation -1 deck cover
CFE (KW / m ² ) ≥ 20
Qsb (MJ / m < ² >)> 1.5
Qt (MJ)? 0.7
Qp (KW / m ² )? 0.4
- surface flooring
CFE (KW / m ² ) ≥7
Qsb (MJ / m ² )? 0.25
Qt (MJ)? 2
Qp (KW / m ² )? 10 CFE (KW / m ² ) ≥7
Qsb (MJ / m ² )? 0.25
Qt (MJ)? 2
Qp (KW / m ² )? 10 CFE (KW / m ² ) ≥7
Qsb (MJ / m ² )? 0.25
Qt (MJ)? 2
Qp (KW / m ² )? 10 X Ductility -1 deck cover
Dm? 400
- surface flooring
Dm? 500 -1 deck cover
Dm? 400
- surface flooring
Dm? 500 -1 deck cover
Dm? 400
- surface flooring
Dm? 500 X Toxic
gas CO? 1450 ppm
Br? 600 ppm
HCL 600 ppm
HCN? 140 ppm
HF 600 ppm
SO ₂ ? ₂₀ ppm
NOx? 350 ppm CO? 1450 ppm
Br? 600 ppm
HCL 600 ppm
HCN? 140 ppm
HF 600 ppm
SO ₂ ? ₂₀ ppm
NOx? 350 ppm CO? 1450 ppm
Br? 600 ppm
HCL 600 ppm
HCN? 140 ppm
HF 600 ppm
SO ₂ ? ₂₀ ppm
NOx? 350 ppm X <Test method (test institute)>

MIL-PFR-24613A (Korea Testing and Research Institute for Chemical Convergence Tests), weight, heat resistance, coefficient of friction, repeated cold test, solvent resistance, accelerated weather resistance, flame resistance, abrasion resistance,

Flame propagation: IMO FTP Code MSC Res A. 653 (16) or ASTM E 648 (Disaster Prevention Research Institute)

Flammability: IMO FTP Code Annex 1, Part 2 or ASTM E 662 (Disaster Prevention Research Institute)

Toxic gases: IMO FTP Code Annex 1, Part 2 (Disaster Prevention Research Institute)

<Note>

Cold repeat test, accelerated weathering and flame resistance test results: see FIG. 3

X: Failure to comply with national defense standards

As shown in Table 1, the polyurethane flame retardant flooring material applied by the construction method according to Examples 1 and 2 of the present invention can reduce the weight as compared with Comparative Example 1, The flame retardancy, flammability and toxicity can be improved by satisfying the National Defense Standard (KDS 7220-4001). In addition, the construction method of Comparative Example 1 is composed of 9 steps (A100 to A900), whereas the construction method according to Embodiments 1 and 2 of the present invention is such that the polyurethane flame retardant flooring can be constructed by only 5 steps (S100 to S500) It can be understood that the air can be shortened.

Although the method of constructing a polyurethane flame retardant flooring according to a preferred embodiment of the present invention has been described with reference to the above description and drawings, it is only described by way of example, and various changes and modifications may be made without departing from the technical idea of the present invention And modifications may be made by those skilled in the art.

S100: Surface treatment process
S200: First primer coating step
S300: Non-burnable material lamination process
S400: Second primer coating step
S500: Polyurethane flame retardant coating composition application process

Claims (3)

In a polyurethane flame retardant flooring material construction method,
A surface treatment step (S100) of removing foreign substances formed on the bottom surface;
A first primer coating step (S200) for bonding the bottom surface and the non-burnable material;
Non-burnable material lamination process (S300);
A second primer applying step (S400) for bonding the non-burnable material and the polyurethane flooring composition; And
(S500) of applying a polyurethane flame-retardant flooring composition.
The method according to claim 1,
The non-
Wherein the lightweight aggregate is composed of 5 to 30 parts by weight of alumina cement mixed with 100 parts by weight of the lightweight aggregate.
The method according to claim 1,
The polyurethane flame retardant flooring composition comprises:
(A part, prepolymer) and a flame retardant (B part, resin binder) at a weight ratio of 1: 4,
Based on 100 parts by weight of polyether polyol, 400 parts by weight of chain extender or crosslinking agent, 600 parts by weight of plasticizer, 400 parts by weight of isocyanate and 0.06 part by weight of catalyst,
400 parts by weight of a chain extender or a crosslinking agent, 600 parts by weight of a plasticizer, 400 parts by weight of a pigment, 1000 parts by weight of a flame retardant, 200 parts by weight of a solvent, 60 parts by weight of a curing agent additive, 60 parts by weight,
The chain extender or cross-linking agent may be selected from the group consisting of ethylene glycol (EG), propylene glycol (PG), diethylene glycol (DEG), dipropylene glycol (DPG), butylene glycol (BG), sorbitol, glycerin, trimethylolpropane ), Pentaerythritol or methylene bis 2-chloroaniline (MOCA) Or a combination of two or more thereof,
The plasticizer is used singly or in combination of two or more among dioctyl phthalate (DOP), dioctyl adipate (DOA), dibutyl phthalate (DBP) or diisobutyl phthalate (DIBP)
The isocyanate may be selected from the group consisting of methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), hexamethylene diisocyanate (HMDI), isophorone diisocyanate (IPDI), meta xylene diisocyanate (MXDI) Hydrogen is added to a benzene ring of a diisocyanate (H12 MDI) or xylene diisocyanate (XDI), which is made from an alicyclic group by adding hydrogen to a benzene ring of a diene isocyanate (TMXDI) or a methylene diphenyl diisocyanate (MDI) (Hydrogenated XDI), which are used alone or in combination of two or more,
The flame retardant may be at least one selected from the group consisting of phosphoric acid, phosphine oxide, phosphine oxide diol, phosphite, phosphonate, trialkylphosphate, (S) selected from the group consisting of Alkyldiaryl phosphate, Triaryl phosphate, Resorcinol bisphenyl phosphate (RDP), aluminum hydroxide, antimony oxide, magnesium hydroxide or boron- Used in combination,
The catalyst used in the above-mentioned subject uses phosphoric acid (H ₃ PO ₄ )
The reactive catalyst used in the curing agent is selected from the group consisting of triethylene diamine (TEDA), 1,4-diazabicyclo [2.2.2] octane, quaternary ammonium And a dialkyltin dicarboxylate, which is a carboxylate salt of an alkali metal or an organic tin compound, are used alone or in combination of two or more thereof,
The pigment comprises: It may be used alone or in combination with titanium dioxide (TiO ₂ ), carbon black, iron oxide yellow, iron oxide red, heavy carbon or silica,
The solvent may be used alone or in combination of two or more among xylene, toluene, methyl ethyl ketone or methyl isobutyl ketone,
Wherein the additive for a curing agent is used alone or in combination of two or more of a dispersing agent, a defoaming agent, and a precipitation preventing agent.

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