Pascal cobalt form nh1420 composition and coating method using the same

Abstract

The objective of the present invention is to provide a polyurethane foam composition having multifunctionality that can secure high density and high strength, as well as corrosion resistance, water and moisture resistance, and flame retardancy, with just a single application of polyurethane foam, and a construction method using the same.

Description

Technology Field

[0001] The present invention relates to a Pascal cobalt foam composition and a Pascal cobalt foam construction method using the same, and more specifically, to a high-density and high-waterproof multifunctional Pascal cobalt foam composition for preventing corrosion of steel plates and a Pascal cobalt foam construction method using the same. Background Technology

[0003] Rigid polyurethane foam is widely used in shipyards and construction sites due to its excellent mechanical strength, dimensional stability, and thermal insulation performance, and is known as a material for building panels, panels for cold storage warehouses, and insulation for tanks containing LNG, LEG, and LPG.

[0004] Conventional methods for manufacturing commercially available rigid polyurethane foam mainly involve preparing a mixture by mixing polyether polyol, polyester polyol, foam stabilizer, catalyst, blowing agent, etc., and then additionally mixing in an isocyanate-based compound and spraying it using low-pressure and high-pressure foaming machines.

[0005] In addition, Korean Registered Patent No. 10-2153060 is disclosed as prior art regarding such a 'polyol premix composition for rigid polyurethane foam'.

[0006] The polyol premix composition for rigid polyurethane foam according to the first prior art above comprises 100 parts by weight of polyol and 3 to 30 parts by weight of a blowing agent, wherein the polyol comprises 50 to 80 parts by weight of polyether polyol and 20 to 50 parts by weight of polyester polyol, and the blowing agent comprises a hydrohaloolefin.

[0007] Polymethylene polyphenyl diisocyanate (polymeric MDI) can be reacted in an amount of 80 to 150 parts by weight per 100 parts by weight of the polyol, and, for example, in an amount of 90 to 130 parts by weight.

[0008] The isocyanate index (NCO / OH ratio) of the above polymethylene polyphenyl diisocyanate may be 50 to 150, for example, 100 to 140. When a compound having an isocyanate index in the above range is reacted with a polyol according to the first prior art, the reactivity of the manufactured rigid polyurethane foam is excellent, and the free foam density, thermal conductivity, compressive strength, and flame retardancy may be improved.

[0009] The blowing agent plays the role of forming foam cells inside the insulation material by generating gas during the polymerization reaction process. Since it exists inside the cells after the rigid polyurethane foam is formed, it is desirable to use a material with low thermal conductivity and high stability, and a hydrohaloolefin-based blowing agent can be used.

[0010] The above-mentioned hydrohalolefin blowing agent may include, for example, a hydrofluoroolefin (HFO) blowing agent or a hydrochlorofluoroolefin (HCFO) blowing agent.

[0011] The above blowing agent may be included in an amount of 3 to 30 parts by weight per 100 parts by weight of polyol. By using the blowing agent within the above numerical range in the first prior art, the density of the rigid polyurethane foam can be controlled. The density of the rigid polyurethane foam according to the first prior art is 40 to 210 kg / m³. 3 It can be adjusted, for example, 80 to 140 kg / m² 3 It can be adjusted. Within the above numerical range, the rigid polyurethane foam according to the first prior art can be optimized for use as a building panel, a cold storage panel, and an internal / external insulation material for tanks such as LNG, LEG, and LPG.

[0012] In addition, in addition to the blowing agent being a hydrohalolefin-based (hydrofluoroolefin (HFO), hydrochlorofluoroolefin (HCFO)) blowing agent, additional blowing agents, such as water or volatile blowing agents, may be added.

[0013] The above polyol premix composition may further include a foam stabilizer, and the foam stabilizer may be included in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the polyol.

[0014] The above-mentioned foam stabilizer can prevent cells from merging with each other or the generated cells from being destroyed when cells are formed within the foam, and can improve the mixability between other compositions, as well as the stability and uniformity of the cells, and may include a silicone-based foam stabilizer.

[0015] At this time, the above-mentioned foam stabilizer may be used in the form of a mixture of a silicone foam stabilizer and a non-silicone foam stabilizer, and accordingly, not only can the phenomenon of pinholes occurring in the foam be suppressed, but the quality of the manufactured foam can also be improved by ensuring that the surface of the manufactured foam is formed flat.

[0016] The above polyol premix composition may further include a flame retardant as needed, for example, in an amount of 5 to 30 parts by weight per 100 parts by weight of the polyol. If the flame retardant is included in an amount of less than 5 parts by weight, the effect on improving flame retardancy may be negligible, and if it is included in an amount of more than 30 parts by weight, a problem may arise in which the degree of reaction between the polyol and the polymethylene polyphenyl diisocyanate decreases as the relative composition ratio of the polyol decreases.

[0017] The above polyol premix composition may further include a catalyst as needed, and the catalyst may be included in an amount of 10 parts by weight or less per 100 parts by weight of the polyol. If the content of the catalyst exceeds 10 parts by weight, the reaction rate will no longer be improved, and the effectiveness of the catalyst may decrease.

[0018] The above catalyst is configured to accelerate or delay the reaction rate between the polyol and the polymethylene polyphenyl diisocyanate without directly participating in the polymerization reaction, and although the type is not particularly limited, for example, an amine-based catalyst, a potassium catalyst, or a tin-based catalyst may be used.

[0019] In the case of the polyurethane foam according to the first prior art above, the focus is only on density, strength, and thermal conductivity, and corrosion resistance or water and moisture resistance is not considered.

[0021] Meanwhile, Korean Registered Patent No. 10-2592278 (Waterproof insulation material using semi-fireproof polyurethane foam, polyurea, and flame-retardant polyurea coating, and a method for installing the same) is disclosed as a second prior art for providing a waterproof insulation material using semi-fireproof polyurethane foam, polyurea, and flame-retardant polyurea coating, wherein flame-retardant components are added to increase flame-retardant properties while maintaining excellent waterproofness or heat resistance.

[0022] In the case of the ‘waterproof thermal insulation material using semi-fireproof polyurethane foam and polyurea, flame-retardant polyurea coating’ according to the second prior art above, the polyurethane foam is formed by mixing and foaming (a1) a main component comprising 36 to 44 weight% polyester polyol, 18 to 22 weight% polypropylene glycol, 18 to 22 weight% inorganic flame retardant, 0.7 to 0.9 weight% foaming catalyst, 0.1 to 0.3 weight% gelation catalyst, 1.0 to 3.0 weight% trimerization catalyst, and 15 to 20 weight% blowing agent, and (a2) a curing agent comprising isocyanate, in a volume ratio of 2:2.5 to 3.5 of the main component and the curing agent. The polyurea coating layer is formed by mixing and spraying (b1) a main component comprising 70 wt% of a prepolymer, 20 wt% of a polyvinyl alcohol, and 10 wt% of an inorganic flame retardant, and (b2) a curing agent comprising 70 to 80 wt% of a polyol, 18 to 22 wt% of an ethylenediamine, 1 to 3 wt% of a pigment, 0.5 to 2.0 wt% of an antifoaming agent, 0.5 to 2.0 wt% of a moisture absorbent, and 0.5 to 2.0 wt% of a catalyst in a volume ratio of 1:0.8 to 1.2 of the main component and the curing agent.

[0023] At this time, in the above (A) polyurethane foam, the polyester polyol has a weight-average molecular weight of 300 to 600, the propylene glycol has a weight-average molecular weight of 800 to 1,200 g / mol, the foam catalyst is a mixture of PMDETA (pentamethyl diethylene triamine) and BDMEE (di-(N,N-dimethyl aminoethyl)ether), the blowing agent is a mixture of 18 to 22 parts by weight of hydrochlorofluorocarbon (HCFC-141b), 0.8 to 1.2 parts by weight of water, 0.01 to 0.2 parts by weight of dibutyltin dilauric acid, and 0.4 to 0.6 parts by weight of sodium dodecyl sulfate, and the curing agent is an isocyanate, specifically MDI (Methylene diphenyl diisocyanate) with an NCO content of 27 to 33 weight%; In the above (B) polyurea coating, the prepolymer is a mixture of 80 to 120 parts by weight of polyether polyol having a weight-average molecular weight of 1,800 to 2,200 and 50 to 70 parts by weight of isocyanate, the polyvinyl alcohol has a weight-average molecular weight of 800 to 1,200, and the catalyst may be dibutyltin dilaurylate.

[0024] However, in the case of the aforementioned second conventional technology, polyurethane foam must be coated with polyurea, and since the combination of these must be optimized, construction is quite difficult and time-consuming, and there is a problem that it is susceptible to corrosion, especially because the structure of the outer coating layer and the inner urethane foam layer are different.

[0026] On the other hand, a large amount of ammonia gas is generated in pig barns, cattle barns, and poultry farms (hereinafter collectively referred to as "livestock barns"). Furthermore, livestock such as pigs, cattle, and chickens do not eat and become less active when it is cold in winter; in other words, if they do not eat, the growth rate of such livestock decreases, causing significant damage to the farm. Moreover, if there is no insulation, not only does productivity decrease and feed costs increase, but livestock also consume more energy to maintain their body temperature. If there is no insulation, livestock do not use the feed they eat to gain weight or produce eggs (milk) for survival, but instead pour it into maintaining their body temperature.

[0027] Furthermore, poorly insulated livestock barns experience significant internal temperature fluctuations, which are a major culprit in undermining the immune systems of livestock. If cold outside air enters directly during the winter or ventilation is blocked to maintain the internal temperature, ammonia gas accumulates, leading to frequent respiratory diseases such as pneumonia and rhinitis. Additionally, sudden temperature changes cause extreme stress to the animals, triggering digestive disorders like diarrhea. Moreover, young animals may huddle together to escape the cold, resulting in crushing or suffocation accidents.

[0028] Furthermore, while conventional livestock barns inevitably rely heavily on steel structures to maximize space efficiency, the ammonia gas generated within the barn accelerates the corrosion of the steel and the deterioration of the building.

[0029] Therefore, in this regard as well, in existing livestock barns, urethane foam is applied as a first step for heat retention and insulation, a rubber-based polyurea coating is applied as a second step to protect the urethane foam and maintain its durability, and a topcoat such as urethane paint is applied as a third step to prevent and protect against the yellowing of the polyurea.

[0030] Nevertheless, in the case of existing livestock barns, the amount of general waste is reduced by 3mm to 5mm per year due to external ammonia gas, so the above 3-step process usually needs to be performed once every 3 or 5 years. Prior art literature

[0032] Korean Registered Patent No. 10-2153060 (Polyol premix composition for rigid polyurethane foam) Korean Registered Patent No. 10-2592278 (Waterproof insulation material using semi-noncombustible polyurethane foam, polyurea, and flame-retardant polyurea coating, and method of construction thereof) The problem to be solved

[0033] The present invention aims to solve the problems of the prior art, and its purpose is to provide a multifunctional urethane foam composition (named 'Pascal Cobalt Foam Composition' in this specification) and a construction method using the same, which can secure high density and high strength, as well as corrosion resistance, water and moisture resistance, and flame retardancy, with just one application of polyurethane foam. means of solving the problem

[0035] A Pascal cobalt foam composition according to one aspect of the present invention for achieving the above objective comprises, as a main component (10), 230 to 400 parts by weight of a polyether polyol having a number average molecular weight of 1,500 to 2,500 and a hydroxyl functional group divalent, based on 1,000 parts by weight of the total weight of the main component; 65 to 95 parts by weight of an aromatic diamine-based crosslinking agent; 100 to 150 parts by weight of a halocarbon blowing agent; 130 to 250 parts by weight of a reactive polyol crosslinking aid; 30 to 50 parts by weight of a flame retardant; 90 to 130 parts by weight of an amine catalyst for urethane foaming; 1 to 10 parts by weight of water (H2O); and 30 to 50 parts by weight of a reaction control additive. The present invention is characterized by mixing the main component (10) to form the curing agent (20), and mixing the main component (10) and the curing agent (20) based on the total weight of the curing agent, 350 to 600 parts by weight of isocyanate; 150 to 270 parts by weight of polyether polyol having a number average molecular weight of 1500 to 2500 of hydroxyl functional groups; 190 to 340 parts by weight of MDI-based polyisocyanate; and 35 to 65 parts by weight of plasticizer and viscosity modifier, and mixing the main component (10) and the curing agent (20) in a weight ratio of 0.7 to 1.5:1.

[0036] Preferably, the above subject (10) is characterized by the addition of 16 to 38 parts by weight of a surfactant for stabilizing cell structure; 10 to 20 parts by weight of a color pigment (paste); and 15 to 25 parts by weight of a balanced amine catalyst.

[0037] More preferably, the number average molecular weight of the hydroxyl functional group divalent used in the subject (10) is 1800 to 2200 and the content is 270 to 360 parts by weight, the aromatic diamine-based crosslinking agent is 71 to 89 parts by weight, the halocarbon blowing agent is 115 to 135 parts by weight, the reactive polyol crosslinking aid is 160 to 220 parts by weight, the flame retardant is an organic phosphorus-based flame retardant with a content of 34 to 46 parts by weight, the amine catalyst for urethane foaming is 100 to 120 parts by weight, the water (H2O) is 3 to 8 parts by weight, the reaction control additive is 34 to 46 parts by weight, and the surfactant for cell structure stabilization is a silicone surfactant and foam stabilizer with 10 to 20 parts by weight and a silicone surfactant and cell structure regulator with 6 to 18 parts The composition is characterized by being in parts by weight, the color pigment (paste) is in parts by weight of 12 to 18, the balanced amine catalyst is in parts by weight of 17 to 23, the isocyanate used in the curing agent (20) is in parts by weight of 400 to 550, the number average molecular weight of the hydroxy functional group divalent is 1800 to 2200 and the content is 180 to 240 parts by weight, the MDI-based polyisocyanate is characterized by being in parts by weight of 130 to 240 parts by weight of a first polyisocyanate such as Polymeric MDI and 60 to 100 parts by weight of a second polyisocyanate such as Carboimide-modified MDI, and the plasticizer and viscosity modifier is in parts by weight of 40 to 56.

[0038] Additionally, preferably, the above subject (10) is further characterized by the addition of 5 to 15 parts by weight of a chain extender for increasing polyurethane chain length and forming a network; 1 to 10 parts by weight of a flowability regulator for ensuring stability during storage of color pigments; and 1 to 10 parts by weight of an auxiliary polyol for adjusting physical properties for controlling viscosity / reactivity, controlling foam hardness / elasticity, and assisting in cell structure stability.

[0039] More preferably, the above subject (10) is further provided with 0.5 to 5 parts by weight of a moisture absorbent; 1 to 7 parts by weight of a bismuth-based catalyst; and 1 to 9 parts by weight of a tin-based metal catalyst; and the above curing agent (20) is further provided with 0.5 to 5 parts by weight of a storage stabilizer.

[0040] Additionally, preferably, the above subject (10) is further characterized by the addition of 80 to 120 parts by weight of graphite (Carbon) as a functional filler and 35 to 65 parts by weight of red phosphorus as a flame retardant, based on 1000 parts by weight of the above subject.

[0041] In addition, preferably, the above-mentioned main component and hardener are mixed in a weight ratio of 0.9 to 1.2:1.

[0042] Meanwhile, a method for constructing Pascal Cobalt Foam using a Pascal Cobalt Foam composition according to another aspect of the present invention for achieving the above objective comprises: (a) a step of selecting a construction site to be constructed with the Pascal Cobalt Foam composition and removing foreign substances from the construction site (S100); (b) a step of performing a urethane primer work as a urethane primer mixing and first primer treatment after step (a) (S200); and (c) a step of performing a Pascal Cobalt Foam work by applying the Pascal Cobalt Foam composition after step (b) (S300). Effects of the invention

[0044] The Pascal Cobalt Foam composition according to the present invention enables a multifunctional urethane foam capable of securing not only high density and high strength, but also corrosion resistance, water and moisture resistance, and flame retardancy, and has the advantage of being able to be applied with just one spray using a spray method.

[0045] In addition to the above objectives, other objectives and advantages of the present invention will become apparent through the detailed description of embodiments with reference to the accompanying drawings. Brief explanation of the drawing

[0047] FIG. 1 is a drawing showing the raw material mixing process of a Pascal cobalt foam composition according to one aspect of the present invention. FIG. 2 is a flowchart of a Pascal cobalt foam construction method using a Pascal cobalt foam composition according to another aspect of the present invention. Figure 3 is a photograph showing the construction process of Pascal Cobalt Foam using the Pascal Cobalt Foam composition according to the present invention. FIGS. 4 and 5 are photographs showing the completion of the application of Pascal Cobalt Foam to a livestock barn roof using the Pascal Cobalt Foam composition according to the present invention. Specific details for implementing the invention

[0048] Hereinafter, preferred embodiments of the Pascal Cobalt Foam composition according to the present invention and the Pascal Cobalt Foam construction method using the same will be described in detail with reference to FIGS. 1 to 5.

[0049] FIG. 1 is a diagram showing the raw material mixing process of a Pascal Cobalt Foam composition according to one aspect of the present invention, and FIG. 2 is a flowchart of a Pascal Cobalt Foam construction method using a Pascal Cobalt Foam composition according to another aspect of the present invention.

[0050] Figure 3 is a photograph showing the process of constructing Pascal Cobalt Foam using the Pascal Cobalt Foam composition according to the present invention, and Figures 4 and 5 are photographs showing the completion of constructing Pascal Cobalt Foam on a livestock barn roof using the Pascal Cobalt Foam composition according to the present invention.

[0051] In describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the invention, such detailed description is omitted. Furthermore, while preferred embodiments of the present invention will be described below, it is understood that the technical concept of the present invention is not limited thereto and can be modified and implemented in various ways by those skilled in the art.

[0053] (Raw material composition of Pascal Cobalt Foam)

[0054] First embodiment

[0055] First, the Pascal cobalt foam composition (30) according to one aspect of the present invention is prepared by mixing the main component (10) and the hardener (20) for the Pascal cobalt foam composition, as shown in FIG. 1, in advance, and then mixing the main component (10) and the hardener (20) in a ratio of 0.7 to 1.5:1, preferably 0.9 to 1.2:1, and most preferably 1 to 1.15:1 just before application and spraying. The composition of the main component (10) used in the Pascal cobalt foam composition is as follows.

[0056] 1) Theme Combination:

[0057] Based on 1,000 parts by weight of the total weight of the subject, ① 230 to 400 parts by weight (preferably 270 to 360 parts by weight, more preferably 300 to 330 parts by weight, most preferably 316 parts by weight) of a polyether polyol (e.g., SC2204) having an average molecular weight of hydroxyl functional groups (number average molecular weight: hereinafter the same) of 1,500 to 2,500 (preferably 1,800 to 2,200, most preferably 2,000); ② 65 to 95 parts by weight (preferably 71 to 89 parts by weight, more preferably 76 to 84 parts by weight, most preferably 80 parts by weight) of an aromatic diamine-based crosslinking agent (e.g., DiEthyl Toluene DiAmine (DETDA)); ③ 100 to 150 parts by weight of a blowing agent (e.g., a halocarbon blowing agent such as HCFC-141b, HFC-245fa, HFC-365mfc, or an HFO-based blowing agent) (preferably 115 to 135 parts by weight, more preferably 121 to 130 parts by weight, most preferably 126 parts by weight); ④ 130 to 250 parts by weight of a reactive polyol crosslinking aid (e.g., AK1001) (preferably 160 to 220 parts by weight, more preferably 180 to 200 parts by weight, most preferably 190 parts by weight); ⑤ Flame retardant (e.g., TCPP (Tris(1-chloro-2-propyl) phosphate)) 30 to 50 parts by weight (preferably 34 to 46 parts by weight, more preferably 38 to 43 parts by weight, most preferably 40 parts by weight).8 parts by weight); ⑥ 90 to 130 parts by weight of amine catalyst for urethane foaming (e.g., KR403) (preferably 100 to 120 parts by weight, more preferably 106 to 115 parts by weight, most preferably 111 parts by weight); ⑦ 1 to 10 parts by weight of water (H2O) (preferably 3 to 8 parts by weight, more preferably 4 to 6 parts by weight, most preferably 5 parts by weight); and ⑧ 30 to 50 parts by weight of reaction control additive (e.g., Diethanolamine DEOA_W) (preferably 34 to 46 parts by weight, more preferably 38 to 43 parts by weight, most preferably 40.7 parts by weight); are mixed to form the main component (10).

[0058] In addition, additives and functional additives that aid in foam structure formation may be added, based on 1,000 parts by weight of the total weight of the main component (hereinafter the same as in the first embodiment), ⑨ 16 to 38 parts by weight of a silicone surfactant for cell structure stabilization (preferably 10 to 20 parts by weight of a silicone surfactant and foam stabilizer (e.g., HR370) and 6 to 18 parts by weight of a silicone surfactant and cell structure regulator (e.g., ZF-22); more preferably 13 to 17 parts by weight of a silicone surfactant and foam stabilizer and 10 to 14 parts by weight of a silicone surfactant and cell structure regulator; most preferably 15 parts by weight of a silicone surfactant and foam stabilizer and 11.8 parts by weight of a silicone surfactant and cell structure regulator); It is preferable to further include 10 to 20 parts by weight of color pigment (paste) (preferably 12 to 18 parts by weight, more preferably 14 to 16 parts by weight, most preferably 15 parts by weight); and 15 to 25 parts by weight of balanced amine catalyst (triethylenediamine) (e.g., HL ACAT L33) (preferably 17 to 23 parts by weight, more preferably 19 to 21 parts by weight, most preferably 20 parts by weight).

[0059] Furthermore, as an auxiliary agent to increase strength, hardness, and stability, it is even better to add 5 to 15 parts by weight of a chain extender (e.g., 1,4-Butylene Glycol) for increasing polyurethane chain length and forming a network (preferably 7 to 13 parts by weight, more preferably 9 to 11 parts by weight, most preferably 10 parts by weight); 1 to 10 parts by weight of a flowability regulator (e.g., Silica M5) for the storage stability of color pigments (preferably 3 to 8 parts by weight, more preferably 4 to 6 parts by weight, most preferably 5 parts by weight); and 1 to 10 parts by weight of an auxiliary polyol (e.g., PU2242) for controlling physical properties, controlling viscosity / reactivity, foam hardness / elasticity, and assisting in cell structure stability (preferably 3 to 8 parts by weight, more preferably 5 to 7 parts by weight, most preferably 6.1 parts by weight).

[0060] Additionally, trace amounts of a moisture absorbent and a metal catalyst may be added, such as 0.5 to 5 parts by weight of a moisture absorbent (e.g., Incozol 2) (preferably 1 to 3 parts by weight, more preferably 1.3 to 2 parts by weight, most preferably 1.5 parts by weight); 1 to 7 parts by weight of a 9% bismuth-based catalyst (e.g., BINL A9) (preferably 1.7 to 4 parts by weight, more preferably 2.2 to 3 parts by weight, most preferably 2.5 parts by weight); and 1 to 9 parts by weight of a tin-based metal catalyst (e.g., PB 24%) (preferably 2 to 6 parts by weight, more preferably 3 to 4 parts by weight, most preferably 3.6 parts by weight).

[0061] 'SC2204', which is used as the polyether polyol in the above subject, is manufactured through an EO (Ethylene Oxide) addition polymerization reaction unlike other polyols, and has a faster curing speed and superior mechanical properties such as tensile strength and tear strength compared to general polyols.

[0062] In addition, 'DETDA', which is used as the crosslinking agent, is a crosslinking agent used to promote curing and enhance mechanical properties of polyurea. It has an aromatic ring (toluene) and two amine groups (-NH₂), so it reacts rapidly with isocyanates in urethane or polyurea systems, forms a high-strength network, and has excellent heat resistance and chemical resistance.

[0063] Previously, HCFC-141b was mainly used as a halocarbon blowing agent, but since it contains chlorine (Cl) and is classified as an ozone-depleting substance, it is being phased out globally in accordance with the Montreal Protocol, and there is currently a trend toward switching to HFC-245fa and HFC-365mfc, which have an ozone depletion potential (ODP) of 0, or next-generation eco-friendly blowing agents such as HFO series, or water blown methods.

[0064] In polyurethane manufacturing and chemical processes, water acts not merely as a simple solvent, but as a powerful chemical catalyst and blowing agent. Particularly in polyurethane foam manufacturing processes involving flame retardants like TCPP, water plays a decisive role as a chemical blowing agent. Water reacts directly with isocyanate (-NCO) groups to generate carbon dioxide (CO2) gas; the CO2 produced in this process forms bubbles within the liquid resin, causing the foam to expand. Furthermore, the reaction between water and isocyanate forms urea bonds, which enhance the hardness and heat resistance of the final product and act as a trigger to control the overall process speed. Consequently, these bonds are treated as critically as catalysts in the field. The intense heat generated from the reaction between water and isocyanate creates a "self-catalytic" effect that accelerates the main reaction between polyol and isocyanate, meaning that even very fine adjustments to the amount of water can completely alter the density and volume of the urethane foam.

[0065] In addition, 'AK-1001' acts as a chain extender or crosslinking aid as a reactive polyol. More specifically, 'AK-1001' is an additive added to polyols (main components) for urethane foam, just like HR370 and KR403, but functionally it falls into a different category from catalysts or surfactants, namely acting as a crosslinkable polyol or chain extender. That is, as a substance having OH groups that directly participates in the urethane foam reaction, it controls the polymer chain length and crosslink density, thereby playing a role in controlling the mechanical strength of the foam and stably adjusting the foam structure.

[0066] HR370, which is a surfactant and foam stabilizer, performs foam stabilization functions such as stabilizing the bubble membrane formed by CO₂ foaming and preventing coalescence; cell structure control functions such as controlling cell size, cell uniformity, and the open cell / closed cell ratio; functions such as maintaining a balance between the gelation reaction and the blowing reaction; and foam appearance improvement functions such as preventing pinholes, preventing collapse, and forming a uniform density.

[0067] For example, ZF-22, which is a surfactant and cell structure regulator, strongly promotes the "blowing reaction" in which water and isocyanate react to produce carbon dioxide (CO2). It has reactive groups such as hydroxyl groups (-OH) within its molecular structure, so it is directly bonded to the polyurethane matrix (polymer structure) during the reaction process. Consequently, the catalyst does not leak out even after the product is finished, so it does not emit a characteristic amine odor and is an environmentally friendly material.

[0068] Meanwhile, 'KR403', an amine catalyst for urethane foaming, is a catalyst based mainly on organometallic compounds, and when manufacturing polyurethane foam (PU Foam), it precisely controls the reaction rate between polyol and isocyanate to optimize the size of the bubbles and the curing speed.

[0069] On the other hand, 'TCPP (Tris(1-chloro-2-propyl) phosphate)' as a flame retardant is a flame retardant widely used in the manufacture of urethane foam, and is typically a liquid additive of the chlorinated phosphate ester series. Since urethane foam is fundamentally a highly flammable material, flame retardants are added in almost all cases to satisfy fire safety standards. In particular, in this invention, additional flame retardants such as red phosphorus are used to further enhance flame retardant performance, and this will be described later with different examples.

[0070] On the other hand, regarding 'DEOA_W', a diethanolamine used as a reaction-regulating additive, the 'W' at the end generally signifies a solution mixed with water; strictly speaking, DEOA_W is more of a crosslinker or chain extender than a catalyst itself. However, because it directly influences the reaction rate and the formation of the foam structure, it is treated in the field as a reaction regulator in a broad sense. It performs a foam stabilization function by connecting polyurethane molecular chains through the crosslinking reaction to increase the hardness and elasticity of the foam, and by supporting the cell structure to prevent collapse when the foam expands, thereby improving moldability. However, since pure DEOA crystallizes at room temperature or has high viscosity, making it difficult to handle, it is transferred or blended in the form of an aqueous solution (usually 85% concentration) to maintain a stable liquid state for ease of handling. Furthermore, since the water contained in the aqueous solution reacts with the isocyanate to generate carbon dioxide, it also naturally serves to aid in foaming.

[0071] Finally, 'L33' as a balanced amine catalyst refers to a TEDA (Triethylenediamine)-based catalyst in which 33% of the amine catalyst is diluted in a solvent (usually dipropylene glycol, etc.), and is a balanced catalyst for maintaining a balance between the gel reaction and the blowing reaction in the urethane foam reaction of the present invention.

[0072] In contrast, 'BINL A9' is a bismuth metal catalyst used to promote urethane bonding due to the characteristics of hybrid polyurea (urethane + urea bond). While lead (Pb) catalysts were previously used, BINL A9 is now used as a replacement for lead due to environmental regulations regarding heavy metals.

[0073] In addition, 'PB 24%' as a metal catalyst (mainly a tin catalyst) promotes the urethane gelation reaction, accelerates the formation of a polymer network, and increases the foam curing speed, so the tin catalyst strongly promotes the polymer formation reaction.

[0074] 2) Curing agent formulation:

[0075] Meanwhile, the composition and mixing ratio of the curing agent (20) to be mixed with the above subject (10) are as follows.

[0076] Based on 1,000 parts by weight of the total weight of the curing agent, ① Isocyanate (for example, BASF’s ‘Lupranat’ ®② 350 to 600 parts by weight of MDI (preferably 400 to 550 parts by weight, more preferably 450 to 500 parts by weight, most preferably 472 parts by weight); ② 150 to 270 parts by weight of a polyether polyol (e.g., PP-2000) having an average molecular weight of hydroxyl functional groups (number average molecular weight: hereinafter the same) of 1500 to 2500 (preferably 1800 to 2200, most preferably 2000) (preferably 180 to 240 parts by weight, more preferably 200 to 220 parts by weight, most preferably 213 parts by weight); ③ 190 to 340 parts by weight of MDI-based polyisocyanate (preferably, 130 to 240 parts by weight of a first polyisocyanate such as Polymeric MDI (e.g., COSMONATE PL(ML)) and 60 to 100 parts by weight of a second polyisocyanate such as Carboimide Modified MDI (e.g., COSMONATE LL(=mm103C)); more preferably, 170 to 200 parts by weight of the first polyisocyanate and 75 to 85 parts by weight of the second polyisocyanate; most preferably, 186 parts by weight of the first polyisocyanate and 80 parts by weight of the second polyisocyanate); and ④ 35 to 65 parts by weight of a plasticizer and viscosity modifier (e.g., TCPP (Tris(1-chloro-2-propyl) phosphate)) (preferably 40 to 56 parts by weight, more preferably 45 to 51 parts by weight, most preferably 48 parts by weight); are mixed to form a curing agent (20).

[0077] Additionally, a small amount of storage stabilizer may be added, such as 0.1 to 3 parts by weight of a storage stabilizer (e.g., Benzoyl chloride) (preferably 0.5 to 2 parts by weight, more preferably 0.8 to 1.4 parts by weight, most preferably 1 part by weight).

[0078] In the above curing agent, the isocyanate has -NCO (isocyanate group) that is highly reactive with hydroxyl groups (-OH) in its molecular structure, so when the -NCO group meets the hydroxyl groups (-OH) of the polyol, a polyurethane bond is formed and self-foaming occurs; that is, when the isocyanate reacts with water (H2O), carbon dioxide (CO2) gas is generated, which acts as a natural foaming agent that causes the foam to expand.

[0079] Reaction equation: R-NCO + H2O → R-NH2 + CO2↑

[0080] In the field, isocyanates are generally referred to as "MDI," but in reality, they are subdivided according to their application. First, Monomeric MDI (Pure MDI) is a high-purity, transparent crystalline material primarily used in high-performance elastomers or artificial leather, while Polymeric MDI (PMDI) has high viscosity and controlled reactivity, making it most widely used in the manufacture of construction spray insulation or sandwich panels. For example, the isocyanate in the curing agent of this embodiment is BASF's 'Lupranat' ® MDI (Methylene Diphenyl Diisocyanate) products under the brand name are available. MDI is the most widely used isocyanate, with a very wide range of applications from rigid (insulation) materials to flexible (cushion) materials and adhesives.

[0081] The representative compound of pure MDI (Pure MDI) is 4,4'-Methylene diphenyl diisocyanate, and the representative component of Polymeric MDI (PMDI) is an oligomer mixture of Methylene diphenyl diisocyanate.

[0082] Cosmonate PL (or ML), belonging to the Polymeric MDI (PMDI) family, is the most widely used isocyanate in rigid polyurethane foam. It exhibits high functionality, resulting in increased crosslinking density, the formation of rigid foam, and excellent thermal insulation performance. On the other hand, while pure MDI forms a precise network due to its high reactivity, its poor handling characteristics as a solid make it preferable to use a mixture of the two rather than alone in foam applications. Meanwhile, Cosmonate PL (or ML) is a product family of Modified MDI produced by Kumho Mitsui Chemical. It has a significantly high Diplenylmethane diisocyanate content, which compensates for the disadvantages of Pure MDI—which exists as a solid at room temperature—by existing in a liquid state and possessing a linear structure with two functional groups. In other words, general monomer MDI is inconvenient to use because it is in a solid form at room temperature, whereas Cosmonate PL (or ML) is a type of mixture that is made into a liquid at room temperature, making storage and transport convenient. It provides appropriate speed and strength during the urethane reaction and does not harden easily even in winter, making it easy to work with, and also plays a role in increasing the elasticity, hardness, and mechanical strength of urethane foam products.

[0083] On the other hand, 'COSMONATE LL' is a modified MDI product in which a portion of Pure MDI is converted into carbodiimide to maintain a low-viscosity liquid state at room temperature. Since it is in a low-viscosity liquid state, processability and reaction speed can be controlled, and the processability of urethane foam can be improved. Therefore, it is more desirable to appropriately mix all of these (Pure MDI, Cosmonate PL (or ML) and Cosmonate LL).

[0084] In addition, the above 'Cosmonate LL' has a functional degree of about 2.1, and since it has not too many crosslinks and forms an appropriate network density, it creates high elasticity and is used as a type of elastomer.

[0085] Meanwhile, the above-mentioned polyether polyol 'PP-2000' plays a role in lowering the NCO% and increasing the overall molecular structure to produce a polymer by reacting the isocyanate of MDI with the hydroxyl group of the polyol.

[0086] On the other hand, the above TCPP (Tris(1-chloro-2-propyl) phosphate) is a raw material for phosphorus-based flame retardants, but here it is used to control the viscosity of the overall curing agent and to impart some plasticity.

[0088] Example 2

[0089] Meanwhile, as another example of raw material formulation for the Pascal Cobalt Foam composition, in order to further improve flame retardancy, the main component (10) is formulated by additionally mixing ⑫ 80 to 120 parts by weight of carbon as a functional filler (preferably 90 to 110 parts by weight, more preferably 96 to 104 parts by weight, most preferably 100 parts by weight) as a functional filler (such as thermal insulation and flame retardancy) based on 1000 parts by weight of the main component in the first example described above; and ⑬ 35 to 65 parts by weight of red phosphorus as a flame retardant (preferably 42 to 58 parts by weight, more preferably 47 to 53 parts by weight, most preferably 50 parts by weight); based on 1000 parts by weight of the main component in the first example described above.

[0090] The remaining components and hardener of the subject are the same.

[0091] At this time, the graphite acts as a functional filler that improves thermal insulation performance by blocking radiant heat, assists in flame retardancy, and improves mechanical strength and dimensional stability. In particular, graphite has a structure in which carbon atoms form hexagonal honeycomb-shaped layers, and because the bonds between these layers are weak, it has soft and slippery properties and is also used as a lubricant.

[0092] Furthermore, red phosphorus primarily acts in the 'solid phase' to block flames. When heat is applied, the red phosphorus oxidizes to generate phosphate-based substances, which form a hard charred layer on the plastic surface. This charred layer not only acts as a protective barrier preventing external oxygen penetration and heat transfer, but also offers a cooling effect by releasing moisture during the reaction process to lower the surrounding temperature. In short, the advantages of red phosphorus are that it exhibits strong flame-retardant performance even with a small amount added; as a halogen-free substance, it is environmentally friendly as it produces less toxic dioxins or corrosive gases during combustion compared to bromine (Br) or chlorine (Cl)-based flame retardants; and because the amount added is small, it possesses excellent mechanical properties that relatively well maintain the plastic's inherent strength and characteristics.

[0094] (Pascal Cobalt Foam Construction Method Using Pascal Cobalt Foam Composition)

[0095] Now, a method for constructing Pascal Cobalt Foam using a Pascal Cobalt Foam composition according to another aspect of the present invention will be described in detail with reference to FIG. 2.

[0096] ① First, a work area, such as the area or shape of the site to be constructed with the Pascal Cobalt Foam according to the present invention, is inspected, and after selecting the construction site, foreign substances are removed from the construction site (S100).

[0097] ② After the above foreign substance removal step (S100), a urethane primer application is performed as a urethane primer mixing and first primer treatment (S200).

[0098] In this case, the above-mentioned urethane primer is a prepolymer made from various polyol (R-OH) compounds and isocyanate (RN=C=O) compounds, and is cured in a manner where free isocyanate groups in the molecule combine with moisture in the air.

[0099] More specifically, for example, it is composed of a mixture of appropriate amounts of P1000 (a polyol with 2 functional groups and a molecular weight of 1000), GP4000 (a polyol with 3 functional groups and a molecular weight of 4000), TMP (Trimethylol Propane) (used for the hardness and fast drying properties of urethane primer), TDI (Toluene Diisocyanate) (reacts faster with moisture in the air compared to other isocyanates), Xylene, MEk, Toluene, DMC (solvent, used to lower the viscosity of the primer), and DBTDL (metal catalyst, a catalyst for creating a rapid polymer reaction during the synthesis of TDI and polyol).

[0100] ③ After the above urethane primer application step (S200), the Pascal Cobalt Foam application (S300), which is the core of the present invention, is performed.

[0101] For example, 1000 liters (1100 kg) of hardener (20) and 1000 liters (1100 kg) of main component (10) are mixed in a 1:1 weight ratio (see FIG. 1) and applied by spraying (see FIG. 3).

[0102] In order to further increase flame retardancy, as in the second embodiment, a flame retardant is added to the main component, and 1000 liters (1100 kg) of curing agent (20) and 1150 liters (1265 kg) of main component (10) are mixed in a weight ratio of 1:1.15 and applied.

[0103] Meanwhile, in the conventional method, polyurea is applied again after foaming the livestock barns, such as pig or cattle barns, making the process expensive and complex. Furthermore, in the case of pig or livestock barns, general foam is lost by 3 millimeters to as much as 5 millimeters per year due to external ammonia gas, so it must be reapplied every 3 or 5 years.

[0104] However, since the Pascal Cobalt Foam of the present invention is constructed by applying polyurea and urethane foam in a single process (S300) (the primer process (S200) can be omitted), the process is simple and economical, and the lifespan is approximately three times better than that of conventional foam. Furthermore, due to the 'Cosmonate LL' with elastomer (rubber) function, the Pascal Cobalt Foam of the present invention possesses extremely high elasticity, so the foam hardly breaks even when kicked, and it has superior elasticity and thermal insulation performance, as well as waterproofing and flame retardant performance (see FIGS. 4 and 5).

[0105] Additionally, since synthetic rubber, specifically polyurea, is added to the cobalt foam itself, construction can be done in one go, and construction can be completed in one go, the cobalt foam of the present invention has superior durability as the inside and outside are identical (whereas the existing method applies a polyurea topcoat due to yellowing, and the topcoat is almost 100% likely to peel off later due to ammonia gas in the livestock barn), the Pascal cobalt foam of the present invention does not discolor, so a topcoat is not required, and therefore the peeling of the topcoat is automatically prevented.

[0106] ④ Finally, after the above Pascal Cobalt Foam processing step (S300), the product is shipped out after undergoing a drying and curing step (S400) and quality verification.

[0107] For reference, rust, grease, and dust must be completely removed from the steel surface before application to maximize adhesion. If necessary, applying red lead (a Pb₃O₄ anti-corrosion pigment) or an anti-corrosion primer before spraying the urethane foam provides a double protection effect. Additionally, proper ventilation is required to allow internal gases to escape until the foam completely hardens, with a density of 60 kg / m³. 3 When properly applied, polyurethane foam serves as an excellent protective barrier against steel corrosion. (However, if the 'adhesion' with the metal surface breaks, it can actually become a poison that traps moisture, so ensuring strong adhesion during the initial application is of utmost importance.)

[0109] Preparation Example 1

[0110] First, the main component (10) is prepared by mixing: ① 316 parts by weight of a polyether polyol (SC2204) with an average molecular weight of 2000 and a hydroxyl functional group divalent (unit: kg, same applies hereinafter); ② 80 parts by weight of an aromatic diamine-based crosslinking agent (DETDA); ③ 126 parts by weight of a halocarbon blowing agent (HCFC-141b); ④ 190 parts by weight of a crosslinking aid ('Halla Chemical's AK1001); ⑤ 40.8 parts by weight of a flame retardant (TCPP); ⑥ 111 parts by weight of a catalyst ('Halla Chemical's KR403); ⑦ 5 parts by weight of water (H2O); and ⑧ 40.7 parts by weight of a reaction control additive ('Halla Chemical's DEOA_W).

[0111] Next, ① Isocyanate ('BASF's 'Lupranat' ® A curing agent (20) is prepared by mixing 472 parts by weight of (MDI); 213 parts by weight of a polyether polyol (PP-2000) having an average molecular weight of 2000 and 2 hydroxyl functional groups; 186 parts by weight of a polymer MDI (COSMONATE PL(ML)) and 80 parts by weight of a carbomimide-modified MDI (COSMONATE LL); and 48 parts by weight of a plasticizer and viscosity modifier (TCPP).

[0112] The Pascal Cobalt Foam work is performed by mixing these materials (10) and the hardener (20) in a 1:1 ratio.

[0114] Preparation Example 2

[0115] The above preparation example 1 is identical to the first preparation example, except that 15 parts by weight of ⑨ silicone surfactant and foam stabilizer (HR370 of Halla Chemical) and 11.8 parts by weight of silicone surfactant and cell structure regulator (ZF-22 of Halla Chemical); 15 parts by weight of ⑩ color pigment (paste); and 20 parts by weight of ⑪ amine catalyst (HL ACAT L33 of Halla Chemical) are further added to the subject matter of preparation example 1.

[0117] Preparation Example 3

[0118] The above preparation example 2 is identical to the first preparation example, except that 10 parts by weight of a chain extender (1,4 Butylene Glycol) for increasing polyurethane chain length and forming a network; 5 parts by weight of a flow control agent (Silica M5) for ensuring stability during storage of color pigment; and 6.1 parts by weight of an auxiliary polyol ('Halla Chemical's PU2242) for adjusting physical properties are added.

[0120] Preparation Example 4

[0121] To the subject of Preparation Example 3 above, 1.5 parts by weight of a moisture absorbent (Incozol 2); 2.5 parts by weight of a 9% bismuth-based catalyst (BINL A9); and 3.6 parts by weight of a tin-based metal catalyst ('Halla Chemical's PB 24%)) were further added,

[0122] The only difference is that 1 part by weight of a storage stabilizer (Benzoyl chloride) is added to the curing agent of the above Preparation Example 3, and it is identical to Preparation Example 1.

[0124] Preparation Example 5

[0125] The above preparation example 1 is identical to the first preparation example, except that 100 parts by weight of graphite (Carbon) as a functional filler and 50 parts by weight of red phosphorus as a flame retardant are further added to the subject of preparation example 1.

[0127] In summary, the Pascal Cobalt Foam construction method using the Pascal Cobalt Foam composition according to the present invention has the following advantages.

[0128] 1) Since the polyurea component, which is a synthetic rubber component, is added to the cobalt foam itself, construction can be carried out in one go, the cobalt foam of the present invention has the same inner and outer surface and has a uniform density due to the foam stabilizer, and furthermore, the density is increased by appropriately combining a crosslinking agent and a crosslinking aid, and furthermore, the hardness is also improved due to reaction control additives and a plurality of catalysts.

[0129] While typical household insulation materials have a density of 20–30 kg / m³, the cobalt foam of the present invention has a density of approximately 60 kg / m³, which is capable of structural reinforcement among "rigid polyurethane foams," and also exhibits excellent pore-filling reinforcement capabilities and moisture resistance. In other words, the fact that the polyurethane foam of the present invention has a density of 60 kg / m³ means that it corresponds to a high-density foam that is much harder and has higher structural strength than general insulation materials (see [Table 1]).

[0130] To elaborate, high density means that the walls of the cells per unit volume are thick and dense. If the density is 60 or higher, the cells form an independent, closed-cell structure where they are not connected to each other. Thanks to this structure, water or moisture cannot penetrate, and it has high compressive strength that is hard enough to withstand being stepped on or subjected to heavy loads without deformation, so it can be used for rooftop waterproofing or parking lot flooring.

[0131] division Standard low-density foam (Density: approx. 20~30) High-density foam (Density: 60 or higher) Main use For interior wall insulation and filling Rooftop waterproofing, floor insulation, factory roof moisture resistance Usually (may be susceptible to moisture) Excellent (super waterproof) robbery Soft (easily pressed) Very hard (walkable)

[0132] Another point to note regarding the aforementioned high-density effect is that while general foam according to conventional technology can achieve a density of 60 or higher, even if the density is set to 50, the yield is 30m when foaming a thickness of approximately 10cm with one set (Liquid A: 250, Liquid B: 220). 2 Only to this extent is possible, but the cobalt foam (NH1420) product of the present invention is 100m under the same conditions 2 Since construction is possible for approximately [amount], it is about 3 times better.

[0133] 2) For the reasons mentioned above, the high-density urethane foam of the present invention has excellent corrosion resistance against iron, and due to its strong moisture and ammonia gas blocking effects, that is, because the formation of closed cells with a very dense cell structure is nearly perfect, it fundamentally blocks external moisture or groundwater from penetrating the surface of the iron, thereby preventing oxidative corrosion of the iron.

[0134] In parallel with this, it completely controls condensation, which is the main cause of iron corrosion, thereby isolating the metal surface from the external temperature to prevent it from dropping below the dew point, and also serves as a coating agent that blocks contact with air because it is sprayed directly onto the iron surface and adheres seamlessly.

[0135] 3) Thus, it contributes significantly to the operational efficiency of livestock barns, such as reducing heating and cooling costs due to insulation effects and reducing maintenance costs due to durability (see [Table 2]).

[0136] division Main effects Details Thermal insulation performance Energy saving Very low thermal conductivity reduces heating and cooling costs Condensation prevention environmental improvement Reduces the temperature difference between walls and ceiling to prevent condensation and inhibits mold and bacterial growth. Confidentiality gap sealing It fills even the finest gaps using a spray method, blocking the entry of outside air. durability long-term use It is resistant to moisture and does not corrode easily even in the humid environment inside livestock barns.

[0137] 4) Additionally, when foaming at low temperatures below -20 degrees, general foams exhibit a 'cracking phenomenon.' However, in the case of the urethane foam of the present invention, the 'cracking phenomenon' does not occur due to the foaming of urethanes such as COSMONATE PI(MI), Monomeric MDI, and DipIenylmethane diisocyanate, and due to the addition of a catalyst that increases the elasticity, hardness, and mechanical strength of the final product. This is because Diethanolamine DEOA-W is, strictly speaking, more of a crosslinker or chain extender than a catalyst itself, and it increases the hardness and elasticity of the foam by connecting the polyurethane molecular chains.

[0138] 5) Furthermore, for the reasons stated above, the high-density polyurethane foam of the present invention can serve as a powerful waterproofing layer beyond a simple thermal insulation material. That is, since it has a very low moisture permeability and absorbs almost no water (1.0g / 100cm² 2 (hereinafter), therefore, it has a simultaneous effect of preventing condensation and blocking rainwater. While general sheet waterproofing often results in leakage at overlapping parts, the urethane foam of the present invention is applied by spraying, making seamless construction possible. It can form a massive waterproof membrane with no seams at all, and simultaneously achieve thermal insulation and waterproofing. In other words, it blocks the hot heat from the rooftop in the summer and prevents leakage during the rainy season, while also having the additional effect of increasing the energy efficiency of the entire building and extending its lifespan.

[0139] 6) Flexural Breaking Load refers to the maximum load at which a material fails to withstand a flexural force when applied. Accordingly, the urethane foam of the present invention, under the same conditions (area 2m² 2 , density 60 kg / m³ 3It is possible to provide high-density rigid polyurethane foam that is much harder than general insulation materials.

[0140] Based on the above data, calculating the expected compressive strength, with a density of 60 kg / m³ 3 The standard compressive strength of rigid polyurethane foam is approximately as follows:

[0141] Compressive strength: approx. 4.0 ~ 5.5 kgf / cm² 2

[0142] This is unit area (m²) 2 Converted to: approximately 40 ~ 55 ton / m 2 am.

[0143] This means that it can withstand a load of approximately 3.5 kg to 5 kg per 1 cm × 1 cm area, and per square meter (m²) 2 It can withstand a load of approximately 35 to 50 tons per unit.

[0144] 7) Finally, the cobalt foam of the first embodiment of the present invention has basic flame retardant performance due to the TCPP flame retardant, but in particular, the cobalt foam of the second embodiment of the present invention exhibits high-performance flame retardant properties due to graphite and red phosphorus.

[0145] On the other hand, although conventional urethane foam is basically a semi-fireproof product, if a polyurea coating is applied on it, the polyurea itself is not semi-fireproof, so it does not exhibit flame-retardant performance overall.

[0146] However, the cobalt foam of the present invention possesses basic flame retardant performance due to the TCPP flame retardant even in the case of the first embodiment, and in particular, in the case of the second embodiment of the present invention, the flame retardant performance is excellent due to the addition of a large amount of graphite and / or red phosphorus.

[0147] Furthermore, since graphite is added to the main component (rather than as a curing agent), the flame-retardant performance is further enhanced. Moreover, the addition of red phosphorus provides additional benefits; red phosphorus acts primarily in the 'solid phase' to block flames. When heat is applied, the red phosphorus oxidizes to produce phosphate-based substances. These substances form a hard carbonized film (a layer similar to charcoal) on the plastic surface. Since this formed carbonized layer acts as a protective barrier that prevents external oxygen from penetrating and blocks heat transfer to the interior, it exhibits superior flame-retardant performance. Additionally, the urethane foam of the present invention releases moisture during the reaction process, allowing for some cooling effects that lower the ambient temperature. Furthermore, as it is a halogen-free component, unlike bromine (Br) or chlorine (Cl)-based flame retardants, it generates less toxic dioxins or corrosive gases during combustion, making it environmentally friendly. Although it is not completely non-combustible, it is sufficient to provide time for evacuation during the initial stages of a fire. In addition, since red phosphorus exhibits strong flame-retardant performance even when added in small amounts, it can be added in smaller quantities compared to other types of flame retardants, so there is also an additional effect of maintaining the inherent strength and properties of the plastic relatively well.

[0148] Although the present invention has been described above according to one embodiment of the invention, it is obvious that changes and modifications made by a person skilled in the art within the scope of the technical concept of the present invention without departing from the spirit of the present invention are also included in the present invention. Explanation of the symbols

[0150] 10 : Pascal Cobalt Foam Topic 20: Pascal Cobalt Foam Hardener 30: Pascal cobalt foam composition

Claims

Claim 1 As a Pascal Cobalt Foam composition, as a first main component (10), based on 1000 parts by weight of the total weight of the first main component, 230 to 400 parts by weight of a polyether polyol having a number average molecular weight of 1500 to 2500 of a hydroxyl functional group divalent; 65 to 95 parts by weight of an aromatic diamine-based crosslinking agent; 100 to 150 parts by weight of a halocarbon blowing agent; 130 to 250 parts by weight of a reactive polyol crosslinking aid; 30 to 50 parts by weight of a flame retardant; 90 to 130 parts by weight of an amine catalyst for urethane foaming; 1 to 10 parts by weight of water (H2O); and 30 to 50 parts by weight of a reaction control additive; A Pascal cobalt foam composition characterized by comprising a first main component (10) by mixing to include, and a curing agent (20) by mixing to include, based on a total weight of 1000 parts by weight of the curing agent, 350 to 600 parts by weight of isocyanate; 150 to 270 parts by weight of polyether polyol having a number average molecular weight of 1500 to 2500 of hydroxyl functional groups; 190 to 340 parts by weight of MDI-based polyisocyanate; and 35 to 65 parts by weight of a plasticizer and viscosity modifier; and mixing the first main component (10) and the curing agent (20) in a weight ratio of 0.7 to 1.5:

1. Claim 2 A Pascal cobalt foam composition according to claim 1, characterized by further including 16 to 38 parts by weight of a surfactant; 10 to 20 parts by weight of a color pigment (paste); and 15 to 25 parts by weight of an amine catalyst in the first subject (10). Claim 3 In claim 2, the polyether polyol having a divalent hydroxyl functional group used in the first subject (10) is 270 to 360 parts by weight, the aromatic diamine-based crosslinking agent is 71 to 89 parts by weight, the halocarbon blowing agent is 115 to 135 parts by weight, the reactive polyol crosslinking aid is 160 to 220 parts by weight, the flame retardant is an organic phosphorus-based flame retardant with a content of 34 to 46 parts by weight, the amine catalyst for urethane foaming is 100 to 120 parts by weight, the water (H2O) is 3 to 8 parts by weight, the reaction control additive is 34 to 46 parts by weight, the surfactant is a silicone surfactant and foam stabilizer with 10 to 20 parts by weight and a silicone surfactant and cell structure regulator with 6 to 18 parts by weight, and the color pigment (paste) A Pascal cobalt foam composition characterized in that the curing agent (20) is 12 to 18 parts by weight, the amine catalyst is 17 to 23 parts by weight, the isocyanate used in the curing agent (20) is 400 to 550 parts by weight, the polyether polyol having a dihydroxy functional group is 180 to 240 parts by weight, the MDI-based polyisocyanate is 130 to 240 parts by weight of the first polyisocyanate of Polymeric MDI and 60 to 100 parts by weight of the second polyisocyanate of Carboimide-modified MDI, and the plasticizer and viscosity modifier is 40 to 56 parts by weight. Claim 4 A Pascal cobalt foam composition according to claim 2, characterized by further comprising, in the first subject (10), 5 to 15 parts by weight of a chain extender for forming a polyurethane network; 1 to 10 parts by weight of a fluidity regulator for ensuring stability during storage of color pigments; and 1 to 10 parts by weight of an auxiliary polyol for adjusting physical properties for controlling viscosity / reactivity, controlling foam hardness / elasticity, and assisting in cell structure stability. Claim 5 A Pascal cobalt foam composition according to claim 4, wherein the first subject (10) is further mixed to include 0.5 to 5 parts by weight of a moisture absorbent; 1 to 7 parts by weight of a bismuth-based catalyst; and 1 to 9 parts by weight of a tin-based metal catalyst; and the curing agent (20) is further mixed to include 0.5 to 5 parts by weight of a storage stabilizer. Claim 6 A Pascal cobalt foam composition characterized by further mixing 80 to 120 parts by weight of graphite (carbon) as a functional filler and 35 to 65 parts by weight of red phosphorus as a flame retardant into the first main component (10) according to claim 1, based on 1000 parts by weight of the first main component, to form a second main component, and mixing the second main component and the curing agent (20) according to claim 1 in a weight ratio of 0.7 to 1.5:

1. Claim 7 A Pascal cobalt foam composition according to claim 1, characterized by being formed by mixing the first main component and the curing agent in a weight ratio of 0.9 to 1.2:

1. Claim 8 A method for constructing Pascal Cobalt Foam using a Pascal Cobalt Foam composition, comprising: (a) a step of selecting a construction site to be constructed with the Pascal Cobalt Foam composition and removing foreign substances from the construction site (S100); (b) a step of performing a urethane primer work as a urethane primer mixing and first primer treatment after step (a) (S200); and (c) a step of performing a Pascal Cobalt Foam work by applying the Pascal Cobalt Foam composition of any one of claims 1 to 6 after step (b) (S300).

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