KR102072720B1 - Coating solution with excellent airtight property and polymer retardant, and liquid storage bottle coated with the composition - Google Patents

Abstract

The present invention relates to a coating liquid having improved hermeticity and flame retardancy and a liquid storage container coated with the same.
The coating liquid having improved sealing property and flame retardancy according to the present invention is a primer composition coated on the surface of the liquid storage container to form a primer layer, a coating liquid composition coated on the primer layer to form a coating layer, and coated on the coating layer to modify the surface. Surface modifying compositions forming a layer.
By the above-described configuration, the present invention can be coated on a liquid storage container such as a paint bucket to enhance the flame retardant properties and to enhance the mechanical properties of the liquid storage container.

Description

COATING SOLUTION WITH EXCELLENT AIRTIGHT PROPERTY AND POLYMER RETARDANT, AND LIQUID STORAGE BOTTLE COATED WITH THE COMPOSITION}

The present invention relates to a coating liquid with improved sealability and flame retardancy and a liquid storage container coated with the same, and more particularly, to a liquid storage container such as a paint bucket, without opening or closing the entire liquid storage container, and formed on the upper surface of the container in a screw form. By coating the lid to open and close the inside, the remaining amount and condition of the liquid inside the liquid storage container can be easily observed, and when the liquid is discharged to the outside, the entire liquid storage container is contaminated through the screw type lid. The present invention relates to a coating liquid and a liquid storage container coated with the same, which can safely discharge liquids in small portions without being made, and which can be coated with a liquid storage container to enhance flame retardant properties and to enhance mechanical properties of the liquid storage container.

In general, paint in a large paint can is poured into a small container, and when the paint can is tilted to the side to pour the paint into another container and then erected, the paint at the edges flows down the outside of the paint can and falls to the floor. Often the bottom of the passage is dirty.

In order to prevent the paint from flowing down the floor of the paint bucket to the bottom, a groove is formed along the edge of the paint bucket, and a hole is formed in the bottom of the paint groove, publication number 1999-0041282. A paint bucket for preventing paint dripping, hereinafter referred to as "prior art").

The prior art is that the lid is smeared on the lid portion is coupled to the rim groove, the lid is dirty easily, when the paint is poured into the other container through the long hole in the paint a lot of paint flows into the rim groove around the long hole There are also disadvantages.

And conventional paint cans have no problem when there are few paints stored inside, but when they are tilted to the side in order to quickly pour paint into other containers in a filled state, the width of the paint falling down is wide so that some of the other paints It is likely to fall outside.

On the other hand, the conventional liquid container, such as through the pate can hold a variety of liquids, etc., the liquid container is provided with a discharge port to discharge the liquid contained therein to the discharge port.

The opening of the liquid container is equipped with an openable cap, and in particular, a liquid container containing lubricating oil or edible oil is generally equipped with a spout cap having a sealing function, and the spout cap has a spout of the liquid container. It can be pushed out or pulled out, and is formed in a structure capable of sealing and unsealing.

On the other hand, the discharge port of the conventional liquid container can be opened and closed by rotating the screw type, and through the outlet can discharge the material, for example, paint, etc. in the liquid container to the outside, by rotating the screw type to open and close There is a problem that the lid is easily broken or worn by a light external shock.

That is, a liquid container containing a liquid, such as a conventional paint, is divided into small portions or a screw-type lid formed on a part of the upper surface of the liquid container, rather than the entire lid of the liquid container, in order to prevent modification of the remaining liquid after use. To use, the screw-type lid is easily worn, especially when formed of a plastic material had a problem of ignition.

Domestic Patent Publication No. 10-2018-0014610 (published Feb 09, 2018) Domestic Patent No. 10-1597495 (registered February 18, 2016)

The present invention is formed on the upper surface of the liquid storage container, such as paint cans, etc., without opening and closing the entire liquid storage container is coated on the lid that can be opened and closed inside the container in the form of a screw, thereby remaining the amount of liquid in the liquid storage container and The condition can be easily observed, and when the liquid is discharged to the outside, the liquid can be safely discharged in small portions without contaminating the entire liquid storage container through the screw type lid, and the liquid storage container is coated to enhance the flame retardant characteristics. The present invention provides a composition comprising a primer composition, a coating liquid composition, and a surface modified composition having improved sealing property and flame retardancy, which can enhance mechanical properties of a liquid storage container, and a liquid storage container coated with the same.

In addition, the present invention is coated on the lid of the liquid container for opening and closing the discharge port by rotating in a screw type, it is possible to solve the problem that the lid is easily broken or worn by a light external impact, and when the plastic is formed of a fire The present invention provides a composition including a primer composition, a coating liquid composition, and a surface modified composition having improved sealing property and flame retardancy, which can block the problem of combustion in advance, and a liquid storage container coated with the same.

The various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The composition comprising the primer composition, the coating liquid composition and the surface modification composition with improved sealability and flame retardancy according to the invention is a primer composition which is coated on the surface of the liquid storage container to form a primer layer, which is coated on the primer layer to form a coating layer A coating liquid composition, and a surface modification composition coated on the coating layer to form a surface modification layer, wherein the primer layer composition includes 50 to 100 parts by weight of acrylic monomer, 10 to 30 parts by weight of reactive monomer, and 1 to 5 weight of coupling agent. Parts, 0.1 to 1 parts by weight of catalyst and 20 to 40 parts by weight of water are included in the mixture, and the coating solution composition is 50 to 150 parts by weight of polyester resin, 10 to 30 parts by weight of melamine resin, 10 to 20 expanded graphite powder Parts by weight, 5 to 15 parts by weight of 1,3,5-triglycidyl isocyanurate , 2 to 5 parts by weight of dodecanedioic acid and 10 to 20 parts by weight of the additive, the additive is 1 to 3 parts by weight of antioxidant, 1 to 3 parts by weight of light stabilizer, 0.1 to 1.0 parts by weight of film forming agent , 1 to 3 parts by weight of phosphorus monomer, 2 to 4 parts by weight of activated carbon and 0.1 to 0.3 parts by weight of insect repellent, the surface modification composition is ammonia (NH ₃ ) is used, the reaction consisting of ammonia (NH ₃ ) After heating the gas to 550 to 580 ° C., the surface modified layer is formed by spraying the heated reaction gas onto the coating layer at an injection speed of 500 to 800 m / s.

Specific details of other embodiments are included in the detailed description.

The composition including the primer composition, the coating liquid composition, and the surface modification composition with improved sealability and flame retardancy according to the present invention is formed on the upper surface of the liquid storage container, such as a paint bucket, without opening or closing the entire liquid storage container, and is screw-type inside the container. By coating the lid to open and close the liquid, the remaining amount and condition of the liquid inside the liquid storage container can be easily observed, and when the liquid is discharged to the outside, the entire liquid storage container is not contaminated through the screw-type lid. Liquid can be safely discharged in small portions, and the liquid storage container can be coated to enhance the flame retardant properties and to enhance the mechanical properties of the liquid storage container.

In addition, the composition comprising a primer composition, a coating liquid composition and a surface modification composition with improved sealability and flame retardancy according to the present invention is coated on the lid of the liquid container for opening and closing the outlet by rotating in a screw type, the lid is subjected to a light external impact It can easily solve the problem of failure or wear easily, and when formed of a plastic material can block the problem of combustion due to ignition in advance.

It will be fully understood that embodiments of the inventive concept may provide various effects not specifically mentioned.

1 to 3 are photographs showing a liquid storage container coated with a composition including a primer composition, a coating liquid composition, and a surface modification composition with improved sealability and flame retardancy according to the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the invention to those skilled in the art.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

The composition including the primer composition, the coating liquid composition, and the surface modification composition with improved sealability and flame retardancy according to the present invention is formed on the upper surface of the liquid storage container, such as a paint bucket, without opening or closing the entire liquid storage container, and is screw-type inside the container. By coating the lid to open and close the liquid, the remaining amount and condition of the liquid inside the liquid storage container can be easily observed, and when the liquid is discharged to the outside, the entire liquid storage container is not contaminated through the screw-type lid. Liquid can be safely discharged in small portions, and the liquid storage container can be coated to enhance the flame retardant properties and to enhance the mechanical properties of the liquid storage container.

1 to 3 are photographs showing a liquid storage container coated with a composition including a primer composition, a coating liquid composition, and a surface modification composition with improved sealability and flame retardancy according to the present invention.

1 to 3, the composition including the primer composition, the coating liquid composition and the surface modification composition with improved sealability and flame retardancy according to the present invention is coated on a liquid storage container such as paint cans to enhance the flame retardant properties and liquid storage container Can enhance the mechanical properties.

The composition comprising the primer composition, the coating liquid composition and the surface modification composition with improved sealability and flame retardancy according to the invention is a primer composition which is coated on the surface of the liquid storage container to form a primer layer, which is coated on the primer layer to form a coating layer A coating liquid composition, and a surface modification composition coated on the coating layer to form a surface modification layer.

The primer composition may be coated on the surface of the liquid storage container to form a primer layer. The primer composition may be cured on the surface of the liquid storage container to form a coating film, thereby strengthening the surface of the liquid storage container and providing water (H). _It is possible to prevent various gases (for example, O ₂ , CO _2, etc.) that cause infiltration or corrosion of ₂ O) from contacting the surface of the liquid storage container and to prevent corrosion of the surface of the liquid storage container.

The primer layer composition may include an acrylic monomer, a reactive monomer, a coupling agent, a surfactant, a catalyst, and water. The primer layer composition may include 50 to 100 parts by weight of an acrylic monomer, 10 to 30 parts by weight of a reactive monomer, and a coupling agent 1 To 5 parts by weight, 0.1 to 1 parts by weight of the catalyst and 20 to 40 parts by weight of water may be included in combination.

The acrylic monomer may be any one or more selected from the group consisting of butyl (meth) acrylate, methyl (meth) acrylate, acryronitrile and acrylic acid methacrylic acid.

The reactive monomer may be used to improve the adhesion of the primer composition to the surface of the liquid storage container, and the reactive monomer may be any one or more selected from arylmethacrylate and glycidylmethacrylate.

The coupling agent is N- (2-aminoethyl) -3-aminopropyltrimethoxysilane (N- (2-aminoethyl) -3-aminopropyltrimethoxysilane) or 3-glycidoxypropyl trimethoxysilane (3-Glycidoxypropyl trimethoxysilane Any one or more selected from) may be used.

The catalyst may be used to promote the reaction. Any one or more selected from ammonium persulphate (APS) or benzoyl peroxide (BPO) may be used as the catalyst.

The water is used as a solvent and may be used to adjust the viscosity of the primer composition.

The coating liquid composition comprises a polyester resin, melamine resin, expanded graphite powder, 1,3,5-triglycidyl isocyanurate (1,3,5-triglycidal isocyanurate), dodecanedioic acid and additives, and The additives may be prepared by mixing antioxidants, light stabilizers, film forming agents, phosphorus monomers, activated carbon and insect repellents.

In addition, the coating liquid composition in the present invention is 50 to 150 parts by weight of polyester resin, 10 to 30 parts by weight of melamine resin, 10 to 20 parts by weight of expanded graphite powder, 1,3,5-triglycidyl isocyanurate (1 , 3,5-triglycidyl isocyanurate) 5 to 15 parts by weight, 2 to 5 parts by weight of dodecanedioic acid and 10 to 20 parts by weight of the additive, the additive is 1 to 3 parts by weight of antioxidant, light stabilizer 1 To 3 parts by weight, film forming agent 0.1 to 1.0 parts by weight, phosphorus monomer 1 to 3 parts by weight, activated carbon 2 to 4 parts by weight and 0.1 to 0.3 parts by weight of the insect repellent may be included.

The polyester resin may be prepared by the reaction including ethylene glycol, isophthalic acid and terephthalic acid.

That is, the polyester resin used in the present invention may be prepared by the following manufacturing method.

First, 60 to 80 parts by weight of ethylene glycol, 35 to 45 parts by weight of isophthalic acid, 350 to 450 parts by weight of terephthalic acid and 1 to 3 parts by weight of tetrabutylammonium chloride as a catalyst, a column equipped with a nitrogen gas pipe and a cooling device, a stirrer and a thermometer. And the flask containing the heater was gradually heated up.

Next, when the temperature reaches 150 ° C. to 160 ° C., the condensed water is distilled out, and the reaction temperature is raised to 250 ° C. to 260 ° C. while managing the glycol in the condensed water. Then, 1 to 3 parts by weight of tributyl phosphite is added thereto. Prepolymers having a hydroxyl value of 35 to 40 mgKOH / g, an acid value of 6.5 to 7.5 mgKOH / g, a viscosity of 5,000 to 6,000 cPs (175 ° C., Brookfield viscosity) and a number average molecular weight of 2,500 to 3,500 were prepared.

Next, a flask containing a column, a stirrer, a thermometer, and a heater equipped with a nitrogen gas pipe and a cooling device was charged with 2000 to 3000 parts by weight of the prepolymer, 150 to 250 parts by weight of trimellitic anhydride and 25 to 35 parts by weight of adipic acid. After heating at -250 [deg.] C., the reactant temperature was maintained at 240-250 [deg.] C. and reacted while removing condensed water. Finally, in order to increase the degree of polymerization of the resin, unextracted condensed water and unreacted substances in the polyester resin are removed under a nitrogen atmosphere and a pressure of 50 to 200 mmHg, and 5 to 10 parts by weight of ethyl triphenylphosphonium bromide is added to the polyester. Resin was prepared. At this time, the final polyester resin prepared showed an acid value of 50 to 55 mgKOH / g, a viscosity of 3,500 to 4,500 cPs (200 ° C., Brookfield viscosity), a glass transition temperature of 55 to 60 ° C., and a number average molecular weight of 3,500 to 4,000.

The melamine resin has a weight ratio of 30 to 40 parts by weight of melamine, 20 to 30 parts by weight of formaldehyde, 10 to 30 parts by weight of water, 1 to 3 parts by weight of diethylene glycol and 1 to 2 parts by weight of sodium hydroxide at a temperature of 35 to 45 ° C. After adjusting the pH of the mixed solution to 7.5 to 8.0 by preparing a mixed solution, the mixed solution was polymerized for 1 to 3 hours at a temperature of 93 to 97 ℃, the polymerized reactant 30 to 35 2 to 7 parts by weight of (5-Ethyl-2-methyl-1,3,2-dioxaphosphorinan-5 based on 100 parts by weight of the cooled reactant after cooling to ℃ and adjusting the pH to 7.5 to 7.8 It can be prepared by the addition of -yl) methyl dimethyl phosphonate P-oxide.

The expanded graphite powder is powdered expanded graphite, and in general, graphite is a mineral formed by layering planar macromolecules in which six-membered rings of carbon atoms are infinitely connected in a planar manner, and its property is a good conductor of electricity. Due to its layered structure, it is flexible and active, and is easy to split, but is a macromolecule and has low reactivity.

However, since graphite is only connected by the van der Waals force between the carbon planes of the polysene structure, it is 35.5 nm wider than the 14.2 nm spacing between the carbon atoms, thus forming interlayer compounds by inserting other atoms into the gaps between the layers. Can be. In other words, the interlayer compound is made by inserting many atoms, molecules or ions into the gap between the planes while maintaining the network plane of the graphite crystal.

That is, when the interlayer compound or residual compound coated with an acid such as sulfuric acid is rapidly heated to a temperature close to 1000 ° C. between the layers of graphite, the acid is vaporized to generate gas and the graphite pressure is increased by several tens to several hundreds. It is expanded by ship, which is called expanded graphite.

In the present invention, the expanded graphite may play a role of providing thermal insulation performance with non-combustibility because the expanded graphite expands by 30 to 50 times and forms char in a process of increasing the temperature to 180 ° C. or more during a fire. .

The 1,3,5-triglycidyl isocyanurate and dodecanedioic acid are used as a curing agent, and the dodecanedioic acid has a molecular weight of 230 to 280 prepared using crystalline C9 to C12 dibasic acids having a purity of 99% or more. By using dodecanedioic acid, it is possible to secure physical properties such as adhesion, flexibility, chemical resistance, and corrosion resistance through reaction with the polyester resin, and mechanical properties such as high hardness can be secured.

In addition, the 1,3,5-triglycidyl isocyanurate and dodecanedioic acid are used in combination to perform a curing reaction with the polyester resin to secure mechanical and chemical properties, using the composition according to the invention It is possible to secure the gloss of the coating film of the manufactured clay brick.

In the present invention, the 1,3,5-triglycidyl isocyanurate preferably has a glass transition temperature (Tg) of -20 ° C or lower and a number average molecular weight (Mn) in a range of 1000 to 1500.

The antioxidant may be tetrakis [methylene-3- (dodecylthio) propionate] methane, the light stabilizer is bis (1,2,2,6,6-pentamethyl-4-piperidinyl) 2-butyl-2- (4-hydroxy-3,5-di-tert-butylbenzyl) propanedioate can be used.

In the present invention, the antioxidant and the light stabilizer are included in the coating liquid composition, thereby suppressing radical decomposition of the UV blocking and cured coating film, thereby preventing environmental defects of the coating film and defects generated when applying the line.

The film forming agent may be used to further improve the storage stability of the coating solution and to improve the minimum temperature (lowest film temperature: MFFT) to obtain a uniform film. For example, the film forming agent may be 2,2,4-trimethyl. -1,3-pentanediol monoisobutyrate (2,2,4-Trimethyl-1,3-Pentanediol monoisobutyrate) can be used.

The phosphorus monomer may be used to improve adhesion to the liquid storage container cap to which the coating liquid is applied and to improve the rust resistance. In the present invention, the phosphorus monomer may be mono alkyl phosphate or dialkyl phosphate. Any one or more selected from alkyl phosphate) may be used. Specifically, for example, the phosphorus monomer may be bis [2- (methacryloxy) ethyl] phosphate (Bis [2- (methacyloyloxy) ethyl] phosphate, DMEP). , At least one selected from the group consisting of 2- (methacryloyloxy) ethyl phosphate (MMEP) and tris 2- (methacryloyloxy) ethyl phosphate (TMEP) Any one or more may be included.

The activated carbon is a carbon aggregate in which micropores are developed. The activated carbon may change an internal surface area by an activation process, and has excellent properties of absorbency and adsorption that adsorption with surrounding liquid or gas is performed by an internal carbon atom functional group.

In the present invention, the activated carbon also implements the adsorption removal effect of harmful substances discharged from the liquid storage container, and gradually discharges the water absorbed in the drying process after coating liquid coating to increase the drying time to suppress the occurrence of cracks or cracks due to rapid drying can do.

In addition, in the present invention, the activated carbon has a hardness of 90% by mass or more, a packing density of 0.50 to 0.55 g / ml, a specific surface area of 1,000 to 1,200 m ² / g, and a pore distribution of 5 to 10 mm in pore diameter and 900 mg / g or more of iodine adsorption force. A pore volume of 0.50 ml / g, pH 8-9, phenol adsorption force 19 ml / g, and M · B decolorizing force 160-200 ml / g may be used.

The insect repellent is used to prevent the influx of insects, insects, etc. In the present invention, the insect repellent is Allethrin, Bifenthrin, Cyhalothrin, Cypermethrin ( Cypermethrin, Cyfluthrin, Deltamethrin, Etofenprox, Fenvalerate, Permethrin, Phenothrin, Pralethrin ), Resmethrin, Tetramethrin, Tralomethrin and Transfluthrin, at least one selected from the group more specifically N, N-diethyl -m-toluamide (N, N-diethyl-m-toluamide) or 1-piperidinecarboxylic acid-2- (2-hydroxyethyl) -1-methylpropyl ester [1-piperidinecarboxylic acid-2- (2-hydroxyethyl) -1-methylpropyl ester] can be used at least one selected from .

The surface modification composition is a composition for forming a nitride layer with a predetermined thickness by heat treatment on the top of the coating layer, the surface modification composition may be used ammonia (NH ₃ ).

That is, the surface modification composition may form a surface modification layer by heating a reaction gas made of ammonia (NH ₃ ) to a constant temperature and then spraying the upper portion of the coating layer for a predetermined time. In the present invention, a known reaction chamber may be used. By heating the reaction gas made of ammonia (NH ₃ ) to 550 to 580 ° C, the surface modified layer may be formed by spraying the heated reaction gas on the coating layer at an injection speed of 500 to 800m / s.

At this time, the reaction gas made of ammonia (NH ₃ ) is a reaction of 2NH ₃ ⇔ 3H ₂ + 2N, as a result of the nitrogen atoms in the surface of the coating layer to form a surface modification layer to improve the flame resistance, corrosion resistance, wear resistance Liquid storage containers may be formed.

Hereinafter, a composition including a primer composition, a coating liquid composition, and a surface modification composition having improved sealability and flame retardancy according to the present invention will be described in more detail with reference to the accompanying drawings.

<Example>

The primer composition was coated on the surface of the liquid storage container to form a primer layer, the coating liquid composition was coated on the primer layer to form a coating layer, and the surface modification composition was coated on the coating layer to form a surface modification layer.

The primer composition was formulated in a weight ratio of 8 parts by weight of acrylic monomer, 20 parts by weight of reactive monomer, 3 parts by weight of coupling agent, 0.5 parts by weight of catalyst and 20 to 40 parts by weight of water.

In addition, the coating solution composition is 100 parts by weight of polyester resin, 20 parts by weight of melamine resin, 15 parts by weight of expanded graphite powder, 1,3,5-triglycidyl isocyanurate (1,3,5-triglycidyl isocyanurate) 10 It is blended in the weight ratio, 4 parts by weight of dodecanedioic acid and 15 parts by weight of the additive, the additive is 2 parts by weight of antioxidant, 2 parts by weight of light stabilizer, 0.2 parts by weight of film-forming agent, 2 parts by weight of phosphorus monomer, activated carbon 3 parts by weight and 0.2 parts by weight of the insect repellent were included.

In addition, the surface modification composition was used ammonia (NH ₃ ).

<Comparative Example>

The coating solution was configured in the same manner as in the above example, but in the comparative example, only the primer composition and the surface modification composition were included, and the coating solution composition forming the coating layer was not included.

1. Property comparison

After comparing the physical properties of the coating layer prepared according to the Examples and Comparative Examples, the physical properties are shown in Table 1 below.

Item Example Comparative example Compressive Strength (Kgf / cm ² ) 355 240 Absorption rate (%) 10 10 Bending strength (Kgf / cm ² ) 82 75 Porosity (%) 20 19 Heavy Metal Dissolution Test Not detected Not detected Abrasion Resistance (g) 0.4 0.52 Coating layer thickness (mm) 4.2 4.0

※ Heavy Metal Dissolution Test Items: Hg, Cu, Cr + α, Pb, Cd, As, CN-(mg / L)

Examining the above [Table 1], it was confirmed that the coating layer prepared according to the embodiment is excellent in compressive strength, bending strength and the like, compared to the coating layer prepared according to the comparative example, and also excellent in wear resistance.

2. Measurement of smoke

The smokeability of the liquid storage container prepared through the above example was measured, and the measurement criteria thereof are shown in the following [Table 2], and the measurement results are shown in the following [Table 3].

ranking Test Items Exam conditions Conformance criteria Nonflammable Material
(1st grade) nonflammable
(Electric combustion) Temperature difference between maximum temperature and final equilibrium temperature (℃) 750 ° C,
20 minutes combustion 20 ℃ or less Mass loss rate 30% less than Gas Hazard Average stoppage time mouse More than 9 minutes Semi-non-combustible material
(Level 2) Cone calorimeter Total heat emission (MJ / m ² ) About 800 ° C,
10 minutes combustion 8 MJ / m ² or less Time (seconds) when the heat release rate exceeds 20 kW / m ² 10 seconds or less Change of all melting of core material, penetrating crack and hole Visually No cracks, holes and melting of core material Gas Hazard Average stoppage time mouse More than 9 minutes Flame Retardant Materials
(Level 3) Cone calorimeter Total heat emission (MJ / m ² ) About 800 ° C,
5 minutes combustion 8 MJ / m ² or less Time (seconds) when the heat release rate exceeds 20 kW / m ² 10 seconds or less Changes in all melting of core materials, through cracks and holes Visually No cracks, holes and melting of core material Gas Hazard Average stoppage time mouse More than 9 minutes

Example standard Cone calorimeter Total Release Rate (MJ / m ² ) 4.22 8 MJ / m ² or less Time (seconds) when the heat release rate exceeds 20 kW / m ² 0 10 seconds or less Edges of all melted cores, cracks and holes none No cracks, holes and melting of core material emitting smoking none - Judgment Flame retardant second class equivalency

As shown in [Table 3], the liquid storage container prepared according to the embodiment was confirmed that the excellent flame retardancy exhibits the physical properties corresponding to the second flame retardant.

As mentioned above, although one preferred embodiment of the present invention has been described, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Could be. Therefore, it should be understood that one embodiment described above is illustrative in all respects and not restrictive.

Claims (1)

A primer composition coated on the surface of the liquid storage container to form a primer layer, a coating liquid composition coated on the primer layer to form a coating layer, and a surface modification composition coated on the coating layer to form a surface modification layer,
The primer layer composition is contained in a weight ratio of 50 to 100 parts by weight of acrylic monomer, 10 to 30 parts by weight of reactive monomer, 1 to 5 parts by weight of coupling agent, 0.1 to 1 parts by weight of catalyst and 20 to 40 parts by weight of water, The reactive monomer may be any one or more selected from arylmethacrylate and glycidylmethacrylate.
The coating solution composition is 50 to 150 parts by weight of polyester resin, 10 to 30 parts by weight of melamine resin, 10 to 20 parts by weight of expanded graphite powder, 1,3,5-triglycidyl isocyanurate (1,3,5- triglycidyl isocyanurate) 5 to 15 parts by weight, 2 to 5 parts by weight of dodecanedioic acid and 10 to 20 parts by weight of the additive, the additive is 1 to 3 parts by weight of antioxidant, 1 to 3 parts by weight of light stabilizer, 0.1 to 1.0 parts by weight of film-forming agent, 1 to 3 parts by weight of phosphorus monomer, 2 to 4 parts by weight of activated carbon, and 0.1 to 0.3 parts by weight of insect repellent,
The surface modification composition is ammonia (NH ₃ ) is used, after heating the reaction gas consisting of ammonia (NH ₃ ) to 550 to 580 ℃, the heated reaction gas at the spraying rate of 500 to 800m / s over the coating layer A composition comprising a primer composition, a coating liquid composition, and a surface modified composition having improved sealability and flame retardancy, wherein the surface modified layer is formed by spraying with a.

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