KR20220013505A - Enclosure of distribution panel, motor control panel, distribution panel, and solar junction box with enhanced heat-resistant performance coated with inorganic non-combustible paint for fire diffusion prevention - Google Patents

Abstract

The present invention relates to an enclosure of a switchboard, a motor control panel, a distribution board, and a solar junction box with enhanced heat resistance to which an inorganic non-combustible paint for preventing the spread of fire is applied, which has an excellent effect of suppressing toxic gas in case of fire and excellent anti-condensation performance in addition to non-combustible performance and thermal insulation performance. In addition, the present invention can be used as a functional paint for fire occurrence in switchboards where fire problems frequently occur, humidity control is possible in a switchboard facility environment where humidity control is not easy because the same is normally sealed, there is excellent thermal insulation performance, the generation of toxic gas due to the formation of a paint layer after the painting process using paint is suppressed, and it is possible to provide an odorless and non-toxic paint.

Description

Enclosure of distribution panel, motor control panel, distribution panel, and solar junction box with enhanced heat-resistant performance coated with inorganic non-combustible paint for fire diffusion prevention}

The present invention relates to an enclosure of a switchboard, a motor control panel, a distribution board, and a solar junction box with enhanced heat resistance to which an inorganic non-combustible paint for preventing the spread of fire is applied. It relates to the enclosure of a switchboard, a motor control panel, a distribution board, and a solar junction box with enhanced heat resistance, coated with inorganic non-combustible paint for fire spread prevention, which has excellent performance and anti-condensation performance.

In general, on the inner wall of a building, the inner wall of a roof structure, the ceiling of an underground structure, etc. (hereinafter referred to as the 'structure'), the structure itself is constructed to be insulated from the outside in order to prevent dew condensation caused by the temperature difference with the outside, or the insulation material that enters the structure Although a paint is applied to the surface, this paint is a general paint having a function of only a paint, and is not a functional paint having an anti-condensation effect.

The conventional switchgear housing using a coating for preventing condensation of structures uses a general coating, and in order to give an effect of preventing condensation, the paint was manufactured by changing the type and content of the resin and additives, which are the main components of the coating. There is a problem that the prevention effect is not excellent.

Therefore, the switchboard enclosure using the conventional paint used for preventing condensation is a general paint that does not have a function of preventing condensation, so it does not have an excellent anti-condensation effect and is limited in application. There are problems in environmental protection and safety management, such as dripping of condensed water, excessive moisture generation due to operating conditions, corrosion of structures (switchboard enclosure), and mold generation.

This condensation phenomenon mainly refers to a phenomenon in which water droplets form on the inner wall surface of the room and the inner surface of a structure (switchboard enclosure) such as an electric box when the temperature difference between the inside and outside of a building is large, such as in winter. When dew condensation occurs in the enclosure), mold is generated on the wall or causes phenomena such as freezing and freezing, which can cause damage to the building structure and cause damage to the structure (switchboard enclosure) such as an electric box. In this case, it may cause electric shock or fire due to electric leakage caused by water droplets.

Such dew condensation is gradually increasing due to the increase in the temperature difference between the underground and the internal temperature as the depth of the underground structure (switchboard enclosure) increases, and the materials used become closed as buildings become larger and taller, and due to the improvement of living It is understood that the dew condensation phenomenon is increasing as the temperature difference with the outside caused by maintaining the temperature of the living space higher than necessary.

Synthetic resin paints currently in use have a problem in that they contain a large amount of harmful substances that can pollute the environment and have a fatal effect on the human body. In order to solve this problem, water-based paints composed of pigments, resins and additives are sometimes used as interior paints.

In addition, in recent years, the demand for eco-friendly water-based paint with a low content of harmful chemicals is increasing. However, even if it is an eco-friendly product, there is a limit to blocking the generation of harmful chemicals due to the organic compounds contained in the product itself.

Therefore, there is an urgent need for a switchboard enclosure using an eco-friendly paint capable of reducing the concentration of harmful chemicals such as volatile organic compounds and ammonia generated from building materials, etc. At the same time, it is possible to suppress the occurrence of mold by controlling the humidity in the room and preventing dew condensation, and for the development of the enclosure of the switchboard, the motor control panel, the distribution board, and the photovoltaic junction panel with enhanced heat resistance performance using a paint that can also increase the insulation effect. there is a need

(Patent Document 1) KR 10-1400718 B1

It is an object of the present invention to provide an enclosure of a switchboard, a motor control panel, a distribution board, and a solar junction box, the heat resistance performance of which is coated with an inorganic non-combustible paint for preventing the spread of fire is enhanced.

Another object of the present invention is not only non-combustible performance and thermal insulation performance, but also a switchboard, a motor control panel, a distribution board, and a solar panel with enhanced heat resistance coated with an inorganic non-combustible paint for preventing the spread of fire, which is excellent in suppressing toxic gas in case of fire and also in preventing condensation. It is to provide the housing of the optical junction box.

Another object of the present invention is that it can be used as a functional paint for fire occurrence in a switchboard where a fire problem frequently occurs, and it is possible to control humidity in a switchboard facility environment where humidity control is not easy because it is generally sealed, and thermal insulation performance It is also excellent in coating, and after the painting process using the paint, it suppresses the generation of toxic gas due to the formation of the paint layer, and enables the provision of an odorless, non-toxic paint.

In order to achieve the above object, in accordance with an embodiment of the present invention, an inorganic non-combustible paint for preventing fire spread is applied with enhanced heat resistance performance of the switchboard, the motor control panel, the distribution board, and the enclosure of the solar junction box is silica particles; dispersant; antifoam; titanium dioxide; calcium carbonate; menstruum; and a binder, wherein the surface of the silica particles is surface-modified by bonding with a silane compound, and the silane compound is dimethyldimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, tetraethoxysilane, and their may be selected from the group consisting of mixtures.

The binder may be a compound represented by the following Chemical Formula 1:

[Formula 1]

here,

n is an integer from 1 to 100,

a is an integer from 1 to 10,

R1 to R2 are the same as or different from each other and each independently selected from the group consisting of hydrogen, deuterium, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, and an aryl group having 6 to 10 carbon atoms. do.

The compound represented by Formula 1 may be a compound represented by Formula 2 below:

[Formula 2]

here,

n is as defined in Formula 1,

Ad is an adamantyl group.

The inorganic non-flammable paint composition may further include potassium silicate.

The potassium silicate has a particle diameter of 50 to 100 μm, a volume of micropores of 0.8 cc/g or more, and a diameter of micropores of 2 to 50 nm.

The dispersant is a modified acrylate-based dispersant; modified polyurethane acrylic copolymer dispersants; polyacetal-based dispersants; polycarbonate-based dispersants; styrenic dispersant; polyester-based dispersants; polyphenylene ether-based dispersants; polyolefinic dispersants; acrylonitrile-butadiene-styrene copolymer dispersant; polyarylate-based dispersants; polyamide-based dispersants; polyamideimide-based dispersants; polyarylsulfone-based dispersants; polyetherimide-based dispersants; polyethersulfone-based dispersants; polyphenylene sulfide-based dispersant; polyimide-based dispersants; polyether ketone-based dispersants; polybenzoxazole-based dispersants; polyoxadiazole-based dispersants; polybenzothiazole-based dispersants; polybenzimidazole-based dispersants; polypyridine-based dispersants; polytriazole-based dispersants; polypyrridine-based dispersants; polydibenzofuran-based dispersant; polysulfone-based dispersants; polyurea-based dispersant; It may be selected from the group consisting of polyurethane-based dispersants and mixtures thereof.

The antifoaming agent is a silicone antifoaming agent, and the solvent is water.

The present invention is excellent in non-combustible performance and thermal insulation performance, as well as the effect of suppressing toxic gas in the event of a fire and preventing dew condensation.

In addition, it can be used as a functional paint for fire occurrence in switchboards where fire problems frequently occur, and it is possible to control humidity in a switchboard facility environment where humidity control is not easy because it is generally sealed, and it has excellent insulation performance, After the painting process using the paint, it suppresses the generation of toxic gas due to the formation of the paint layer, and enables the provision of an odorless, non-toxic paint.

Hereinafter, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

The enclosure of the switchboard, the motor control panel, the distribution board, and the solar junction box with enhanced heat-resistance performance coated with the inorganic non-combustible paint for preventing the spread of fire of the present invention is made of silica particles; dispersant; antifoam; titanium dioxide; calcium carbonate; menstruum; and a binder, wherein the surface of the silica particles is surface-modified by bonding with a silane compound, and the silane compound is dimethyldimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, tetraethoxysilane, and their may be selected from the group consisting of mixtures.

Today, as the demand for electricity is rapidly increasing due to changes in the residential environment, continuous industrial development, and abnormal climate along with rapid economic growth, the number of electric fires is increasing every year. According to the fire statistics released by the National Fire Information Center, the total number of fires between 2014 and 2018 was 216,499, of which 47,121 (21.8% of total fires) were electrical fires, the second highest after negligence (111,424 cases (51.5%)). occurred.

The casualties caused by electric fires accounted for 233 out of 1,598 fire deaths and 1,540 out of 9,491 people injured. Property damage due to total fires is 2.3 trillion won, of which 450 billion won from electric fires.

As for the status of ignition factors by ignition factor, out of 47,121 electrical fires, short circuits due to insulation deterioration accounted for 12,095 cases (25.7%) the most, followed by 11,663 cases of unidentified short circuits, 4,955 cases of short circuits due to poor contact, 4,670 cases of overload and overcurrent, and 4,534 cases of tracking. occurred as a result. As for the status of occurrence by facility, among the total number of fires in electrical facilities, 6,814, switchboards and distribution boards accounted for 2,685 cases (39.4%), followed by watt-hour meters with 1,017 cases, other (electrical facilities) with 893 cases, transformers with 364 cases, and low voltage circuit breakers with 315 cases. occurred.

In particular, the risk of fire is inherent in switchboards and distribution boards due to insulation breakdown, poor contact, and dust. In order to remove these fire hazards, it is necessary to improve the overheating temperature control and fire detection, fire extinguishing technology, flame retardancy of electric wires and cables, and institutionalization of service life of switchboards and distribution boards.

For flame retardancy of electric wire and cable, which is suggested as one of the methods for removing the fire hazard for the switchboard and the distribution board, a combustion prevention paint can be used, and the research is continuously being conducted.

The present invention relates to an enclosure of a switchboard, a motor control panel, a distribution board, and a solar junction box with enhanced heat resistance performance coated with an inorganic non-combustible paint for preventing fire spread that can be used for switchboards and distribution boards. It has an excellent effect of suppressing toxic gas and has excellent anti-condensation performance.

In addition, it can be used as a functional paint for fire occurrence in switchboards where fire problems frequently occur, and it is possible to control humidity in a switchboard facility environment where humidity control is not easy because it is generally sealed, and it has excellent insulation performance, After the painting process using the paint, it is possible to suppress the generation of toxic gas due to the formation of the paint layer, and to provide an odorless, non-toxic paint.

Specifically, the silica particles are surface-modified by bonding with a silane compound, and the silane compound is a group consisting of dimethyldimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, tetraethoxysilane, and mixtures thereof. can be selected from

When the surface of the silica particles is mixed with the silane compound in a surface-modified state, dispersibility in the coating composition is improved, and as silica particles are included, acid resistance and weather resistance are improved, and scratch properties can be improved. The silica particles have a diameter of 15 to 25 nm, and when including silica particles having a diameter size less than the range value, the effect of improving acid resistance, weather resistance and scratch resistance is insignificant, and silica having a diameter size including the range value In the case of including particles, there is a problem in that work efficiency is lowered in the painting process.

The binder may be a compound represented by the following Chemical Formula 1:

[Formula 1]

here,

n is an integer from 1 to 100,

a is an integer from 1 to 10,

R1 to R2 are the same as or different from each other and each independently selected from the group consisting of hydrogen, deuterium, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, and an aryl group having 6 to 10 carbon atoms. do.

More specifically, the compound represented by Formula 1 may be a compound represented by Formula 2 below:

[Formula 2]

here,

n is as defined in Formula 1,

Ad is an adamantyl group.

The binder may exhibit water solubility including -OH group, and may improve heat resistance as a binder including an adamantyl group. That is, there is no problem that the adhesive strength is lowered by heat.

In addition, the inorganic non-combustible paint composition may further include potassium silicate, specifically, the potassium silicate has a particle diameter of 50 to 100 μm, a volume of micropores of 0.8 cc/g or more, and the diameter of micropores is 2 to 50 nm.

The porous material included in the coating composition exhibits great adsorption performance when the specific surface area is large. However, in order to increase the internal surface area within a limited volume, a very large number of micropores must be created between the adsorption surfaces, and the micropores are located on the adsorption surface. Since it determines the propulsion capacity of adsorbate molecules for the porous material, the pore size distribution becomes the main characteristic that determines the adsorption capacity of the porous material.

In order to facilitate the adsorption while securing more micropores, the modification of the raw material is in progress, and in the case of the present invention, the adsorption and moisture absorption and desorptive performance are improved by including potassium silicate.

Specifically, the potassium silicate has an average particle diameter of 50 to 100 μm, a volume of micropores of 0.8 cc/g or more, and a diameter of micropores of 2 to 50 nm.

When used within the above range, it is possible to autonomously maintain the environmental humidity, and it is possible to purify the polluted indoor air by maximally increasing the antibacterial and anti-odor and air purification functions, which are characteristics of microporosity.

The dispersing agent is for improving dispersibility and preventing re-agglomeration of fine paint particles, and includes a modified acrylate-based dispersant; modified polyurethane acrylic copolymer dispersants; polyacetal-based dispersants; polycarbonate-based dispersants; styrenic dispersant; polyester-based dispersants; polyphenylene ether-based dispersants; polyolefinic dispersants; acrylonitrile-butadiene-styrene copolymer dispersant; polyarylate-based dispersants; polyamide-based dispersants; polyamideimide-based dispersants; polyarylsulfone-based dispersants; polyetherimide-based dispersants; polyethersulfone-based dispersants; polyphenylene sulfide-based dispersant; polyimide-based dispersants; polyether ketone-based dispersants; polybenzoxazole-based dispersants; polyoxadiazole-based dispersants; polybenzothiazole-based dispersants; polybenzimidazole-based dispersants; polypyridine-based dispersants; polytriazole-based dispersants; polypyrridine-based dispersants; polydibenzofuran-based dispersant; polysulfone-based dispersants; polyurea-based dispersant; It may be selected from the group consisting of a polyurethane-based dispersant and a mixture thereof, but is not limited to the above examples and any that can serve as a dispersant may be used without limitation.

The anti-foaming agent is a silicone anti-foaming agent used to remove harmful air bubbles present in the inorganic paint, but is not limited to the above examples and can be used without limitation.

The titanium dioxide is a kind of mineral that is harmless to the human body and added to food. As it is added to improve adhesion, it does not generate toxic gas even if it burns in contact with a heat source, it hardly shows any signs of carbonization, and the paint itself has a sense of transparency. It is possible to improve durability, tensile strength, tear strength, etc. at the same time.

The calcium carbonate is a carbonate of calcium, and is produced from marble, calcite, berne, limestone, chalk, ice tin, seashell, eggshell, coral, and the like, and may be included as a neutralizing agent for paints.

The solvent is water, and any solvent for preparing the coating composition may be used without limitation.

The enclosure of the switchboard, the motor control panel, the distribution board, and the solar junction box with enhanced heat resistance to which the inorganic non-combustible paint for preventing fire spread of the present invention is applied is specifically, based on 100 parts by weight of the solvent, silica particles; 20 to 30 parts by weight; 1 to 5 parts by weight of a dispersant; 1 to 5 parts by weight of an antifoaming agent; 5 to 10 parts by weight of titanium dioxide; 5 to 10 parts by weight of calcium carbonate; 30 to 50 parts by weight of the binder and 10 to 15 parts by weight of potassium silicate may be included. When mixed and used within the above range, not only non-combustible performance and thermal insulation performance, but also toxic gas suppression effect in case of fire, condensation prevention performance, humidity control is possible, and it is possible to provide odorless, non-toxic paint make it

production example

Preparation of paint composition

The silica particles have a diameter of 15 to 25 nm, and the surface of the silica particles was modified by mixing and reacting with methyltriethoxysilane in a weight ratio of 1:0.02.

After dissolving the binder represented by the following Chemical Formula 2 in water and dissolving the modified acrylate-based dispersant, the surface-modified silica particles, the silica defoaming agent, titanium dioxide, calcium carbonate and potassium silicate were dissolved.

The content of the coating composition is as shown in Table 1 below, and the potassium silicate has a particle diameter of 50 to 100 μm, a micropore volume of 0.8 cc/g or more, and a micropore diameter of 2 to 50 nm. said:

[Formula 2]

Here, n is an integer from 1 to 100, and Ad is an adamantyl group.

IO1 IO2 IO3 IO4 IO5 silica particles 10 20 25 30 40 dispersant 0.5 One 3 5 7 antifoam 0.5 One 3 5 7 titanium dioxide 3 5 7 10 15 calcium carbonate 3 5 7 10 15 water 100 100 100 100 100 bookbinder 20 30 40 50 60 potassium silicate 5 10 13 15 20

(unit parts by weight) Experimental Example 1

moisture absorptive and desorptive test

A non-flammability test and a gas toxicity test were performed on the coating composition.

The paint composition was applied to a gypsum board substrate and dried to form a paint layer, and the test was conducted based on ISO 24353:2008, a moisture absorption and desorptive performance test method, and ISO 16000-23:2009, an adsorption performance test method. , the results are shown in Table 2 below.

IO1 IO2 IO3 IO4 IO5 Adsorption content 10.2 31.2 33.0 33.2 12.5 Desorption content 12.3 25.4 27.5 27.6 13.4 Difference of moisture content -2.1 4.6 5.1 5.3 1.2 Adsorption content (12h) 10.24 28.54 30.23 30.56 12.51

(Unit g/m ³ ) According to the experimental results, when the coating layer is formed using the coating composition within the scope of the present invention, it can be confirmed that the moisture absorptive and desorptive amount is excellent, which is caused by the micropores of the inorganic particles in the coating composition. It can be confirmed that

Experimental Example 2

flame retardant test

It was tested for flame retardancy using the UL 94 test (Underwriter Laboratories) and then rated. The UL 94 fire class is as follows:

V-0 afterflame: the time never exceeds 10 seconds, the total afterflame time for 10 flame applications does not exceed 50 seconds, there is no flaming drop, the specimen is not completely destroyed; The afterglow time of the specimen after the end of the flame application is never more than 30 seconds.

V-1: After flame application is complete, the afterflame time never exceeds 30 seconds, the total afterflame time for 10 flame applications does not exceed 250 seconds, and the flame duration after the flame application ends never exceeds 60 seconds; , other criteria are the same as for V-0.

V-2: Cotton indicator is ignited by spark drop, other criteria are the same as for V-1.

Not rated (ncl): Does not meet flame retardancy class V-2.

As a control, in the same content range as IO3, the binder was prepared in the same manner except that polyvinyl alcohol was used, and a heating test was conducted.

The test results are shown in Table 3 below.

control IO1 IO2 IO3 IO4 IO5 UL 94 rated (1.5mm) V-2 ncl V-1 V-0 V-1 V-2 Burning time (sec) 170 220 77 32 72 182

According to the experimental results, it was confirmed that the paint coating composition of the present invention exhibited superior flame retardant properties within the content range, compared to the case of the paint composition using other types of binders.

Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

Claims (8)

silica particles;
dispersant;
antifoam;
titanium dioxide;
calcium carbonate;
menstruum; and
including a binder;
The surface of the silica particles is surface-modified by bonding with a silane compound,
The silane compound is a switchgear with enhanced heat resistance performance coated with an inorganic non-flammable paint for preventing fire spread selected from the group consisting of dimethyldimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, tetraethoxysilane, and mixtures thereof. , motor control panel, distribution panel, and the enclosure of the solar junction box.
According to claim 1,
The binder is an inorganic non-combustible paint for preventing the spread of fire, which is a compound represented by the following formula (1), and has enhanced heat resistance performance, a control panel for a motor, a distribution panel, and an enclosure of a solar junction box.

[Formula 1]

here,
n is an integer from 1 to 100,
a is an integer from 1 to 10,
R1 to R2 are the same or different from each other and each independently selected from the group consisting of hydrogen, deuterium, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, and an aryl group having 6 to 10 carbon atoms. do.
3. The method of claim 2,
The compound represented by the formula (1) is a compound represented by the following formula (2), an inorganic non-combustible paint for preventing fire spread, the heat-resistance is enhanced switchboard, the motor control panel, the distribution board, the enclosure of the solar junction box.

[Formula 2]

here,
n is as defined in paragraph 2,
Ad is an adamantyl group.
According to claim 1,
The inorganic non-combustible paint composition is an enclosure of a switchboard, a motor control panel, a distribution board, and a solar junction box, the heat resistance performance of which is coated with an inorganic non-combustible paint for preventing fire spread further comprising potassium silicate.
5. The method of claim 4,
The potassium silicate has a particle diameter of 50 to 100 μm, a volume of micropores of 0.8 cc/g or more, and an inorganic non-combustible paint for preventing fire spread of 2 to 50 nm in a diameter of 2 to 50 nm. Enclosure of motor control panel, distribution panel, and solar junction box.
According to claim 1,
The dispersant is a modified acrylate-based dispersant; modified polyurethane acrylic copolymer dispersants; polyacetal-based dispersants; polycarbonate-based dispersants; styrenic dispersant; polyester-based dispersants; polyphenylene ether-based dispersants; polyolefinic dispersants; acrylonitrile-butadiene-styrene copolymer dispersant; polyarylate-based dispersants; polyamide-based dispersants; polyamideimide-based dispersants; polyarylsulfone-based dispersants; polyetherimide-based dispersants; polyethersulfone-based dispersants; polyphenylene sulfide-based dispersant; polyimide-based dispersants; polyether ketone-based dispersants; polybenzoxazole-based dispersants; polyoxadiazole-based dispersants; polybenzothiazole-based dispersants; polybenzimidazole-based dispersants; polypyridine-based dispersants; polytriazole-based dispersants; polypyrridine-based dispersants; polydibenzofuran-based dispersant; polysulfone-based dispersants; polyurea-based dispersant; An enclosure of a switchboard, a motor control panel, a distribution board, and a solar junction box with enhanced heat resistance coated with an inorganic non-combustible paint for preventing fire spread selected from the group consisting of polyurethane-based dispersants and mixtures thereof.
According to claim 1,
The anti-foaming agent is a silicon anti-foaming agent, an inorganic non-combustible paint for preventing fire spread, and heat-resistant performance is enhanced.
According to claim 1,
The enclosure of the switchboard, the motor control panel, the distribution board, and the solar junction box with enhanced heat-resistance performance coated with an inorganic non-combustible paint for preventing fire spread in which the solvent is water.