KR102477174B1 - Paint composition with thermal insulation performance - Google Patents

Abstract

The present invention relates to a paint composition having thermal insulation performance, which is formed by mixing, based on 100 parts by weight of a main raw material of a paint in which a resin selected from polyurethane resin, vinyl chloride resin, silicone resin, and isocyanate resin is dissolved in ketone or ester: 2 to 2 parts by weight of propylene glycol; 5 to 10 parts by weight of butylacryl-2ethylhexyl acrylate methyl methacrylic acid-acrylic silane copolymer; 20 to 30 parts by weight of colloidal silica; 5 to 10 parts by weight of an antibacterial agent; 5 to 10 parts by weight of a plasticizer; 3 to 6 parts by weight of an emulsifier; 10 to 15 parts by weight of pozzolan or cenosphere; 20 to 30 parts by weight of Insullad; and 5 to 10 parts by weight of a fragrant substance. The paint composition causes no harm to the human body.

Description

Paint composition with thermal insulation performance {Paint composition with thermal insulation performance}

The present invention relates to a coating composition having thermal insulation performance, and more particularly, to a coating composition having thermal insulation performance by being applied to the outer walls of bridges, buildings, etc.

Solar energy in summer reaches an average of 5,900 kcal/m per day, and this solar energy raises the surface temperature of a steel plate roof in the middle of the day to around 80℃.

This rise in temperature is a phenomenon caused by the movement of heat, and the mechanism by which heat moves is divided into the following three types.

That is, conduction in which heat moves directly from a place with a high temperature to a place with a low temperature through an object, convection in which heat is transferred through the flow or movement of a fluid medium, such as gas or liquid, without going through a separate medium. There is radiation in which thermal energy is generated by a thermal wave directly radiated from a heat source touching the surface of an object and inducing vibration of molecules.

Sunlight is a type of electromagnetic wave that is absorbed by the surface of a building and causes molecular vibration to generate thermal energy, which causes the temperature of the surface of the building to rise, which in turn causes the temperature inside the building to rise.

As such, when the internal temperature of the building rises, energy consumption required for cooling to lower the temperature increases.

Therefore, the building reflects sunlight in advance or blocks (insulates) the transfer of thermal energy by infrared rays absorbed by the exterior surface of the building to the inside of the building, thereby minimizing the change in surface temperature of the building and thereby consuming energy used for cooling within the building. need to reduce

To this end, by applying a heat-insulating or insulating paint to the building, infrared rays that generate thermal energy from sunlight are effectively reflected to suppress the conversion of infrared rays into thermal energy, and when infrared rays are not reflected and absorbed to generate thermal energy, this thermal energy A method of blocking conduction to the inside is being developed.

The most closely related to the effect of suppressing the temperature rise of these heat-insulating or insulating paints is the solar radiation reflectivity, which indicates the degree to which infrared rays are effectively reflected and the conversion to thermal energy is suppressed. As a conduction heat blocking rate indicating the degree of blocking the conduction of thermal energy, it is necessary to develop a paint for improving the solar reflectance and the conduction heat blocking rate.

As related prior art, Korean Patent Registration No. 10-1762309 is disclosed.

On the other hand, since the conventional techniques use an organic binder such as acrylic, polyester, or urethane in an inorganic binder mixture, there is a limit to exhibiting a flame retardant or non-combustible effect.

The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a paint composition having heat insulation performance by being applied to the outer walls of bridges and buildings.

The object of the present invention described above is, based on 100 parts by weight of a paint main material in which a resin selected from polyurethane resin, vinyl chloride resin, silicone resin, and isocyanate resin is dissolved in ketone or ester, 2 to 6 parts by weight of propylene glycol, butyl acryl 5-10 parts by weight of -2ethylhexyl acrylate-methyl methacrylic acid-acrylsilane copolymer, 20-30 parts by weight of colloidal silica, 5-10 parts by weight of antibacterial agent, 5-10 parts by weight of plasticizer, 3-6 parts by weight of emulsifier , It can be achieved by a paint composition having heat insulating performance, characterized in that it is made by mixing 10 to 15 parts by weight of pozzolan or senospear, 20 to 30 parts by weight of insulad, and 5 to 10 parts by weight of an aromatic substance.

The antimicrobial agent is characterized in that it is any one or a mixture of two or more selected from the group consisting of aluminum hydroxide (Al(OH) ₃ ), zirconium hydroxide (Zr(OH) ₄ ), silver (Ag), and platinum (Pt).

The plasticizer gives flexibility to the coating film and improves adhesion, flexibility, and impact resistance, and is characterized in that it is dibutyl phthalate (DBP) or tri cresyl phosphate (TCP).

The fragrant material is characterized in that the fragrant and functional oil are mixed.

The functional oil is characterized in that it consists of silicone oil or pine needle extract oil.

Further mixing 10 to 20 parts by weight of two-component resin with respect to 100 parts by weight of the main raw material of the paint,

The two-component resin is characterized in that it is selected from the group consisting of urethane resin polyol, epoxy, MMA resin, and polyester.

According to the present invention, it is possible to manufacture a paint containing insulad that exhibits heat insulation performance, and apply the manufactured paint to buildings, bridges, etc. so that the insulation performance can be significantly improved, and components such as antibacterial agents and pozzolans are included. It has the effect of not harming the human body.

1 is a graph showing the heat shielding performance of a paint composition having thermal insulation performance according to the present invention;

Hereinafter, a preferred embodiment of the present invention will be described in detail based on the accompanying drawings.

Terms to be described later are defined in consideration of functions in the present invention, which specifies that they should be interpreted as concepts consistent with the technical spirit of the present invention and meanings commonly used or commonly recognized in the art.

In addition, if it is determined that a detailed description of a known function or configuration related to the present invention may obscure the gist of the present invention, the detailed description will be omitted.

Here, the accompanying drawings are partially exaggerated or simplified for convenience and clarity of explanation and understanding of the configuration and operation of the technology, and each component does not exactly match the actual size.

The paint composition having thermal insulation performance according to the present invention,

Based on 100 parts by weight of a paint main material in which a resin selected from among polyurethane resin, vinyl chloride resin, silicone resin, and isocyanate resin is dissolved in ketone or ester,

2-6 parts by weight of propylene glycol, 5-10 parts by weight of butyl acryl-2ethylhexyl acrylate methyl methacrylic acid-acrylsilane copolymer, 20-30 parts by weight of colloidal silica, 5-10 parts by weight of antibacterial agent, 5-10 parts by weight of plasticizer 10 parts by weight, 3 to 6 parts by weight of an emulsifier, 10 to 15 parts by weight of pozzolan or cenosphere, 20 to 30 parts by weight of insulad, and 5 to 10 parts by weight of a fragrance are mixed.

Propylene glycol maintains stable mixing and viscosity of materials even when the temperature changes, and enhances emulsification dispersibility, light resistance, antiseptic properties, and antiseptic properties (sterilization of air, prevention of mold and bacteria growth).

When propylene glycol is less than 2 parts by weight, antiseptic properties and anti-mold properties are reduced, and when it exceeds 6 parts by weight, cost is excessively increased.

Butylacryl-2ethylhexylacrylate methyl methacrylic acid-acrylsilane copolymer can stably maintain the mixing bond and viscosity of materials even when the temperature changes, and has antifouling, anticorrosive, It strengthens weather resistance, heat resistance, electrical insulation, extensibility, uniform curing and adhesion.

If the butyl acryl-2ethylhexyl acrylate methyl methacrylic acid-acrylsilane copolymer is less than 5 parts by weight, antifouling properties, anticorrosive properties, and heat resistance are impaired, and if it is more than 10 parts by weight, the cost is increased.

Colloidal silica is a hydrophilic material that maintains stable mixing and viscosity even when the temperature changes, and enhances the waterproof, heat resistance, abrasion resistance, impact resistance, aging resistance, antistatic properties of the coating film and the uniform hardness of the coating film.

If colloidal silica is less than 20 parts by weight, water resistance, heat resistance, abrasion resistance, etc. are lower than the standard, and if it is more than 30 parts by weight, it becomes excessive, resulting in an increase in cost.

The antibacterial agent is preferably any one or a mixture of two or more selected from the group consisting of aluminum hydroxide (Al(OH) ₃ ), zirconium hydroxide (Zr(OH) ₄ ), silver (Ag), and platinum (Pt).

If the antibacterial agent is less than 5 parts by weight, the antimicrobial activity is lowered, and if it is 10 parts by weight or more, it is too excessive, resulting in an increase in cost.

The plasticizer gives flexibility to the coating film and improves adhesion, flexibility, and impact resistance, and may be selected from dibutyl phthalate (DBP) or tri cresyl phosphate (TCP).

If the plasticizer is less than 5 parts by weight, performance is reduced, and if it is more than 10 parts by weight, flexibility becomes excessive, thereby impairing performance.

The emulsifier is to adjust the viscosity and fluidity of the paint, and if it is less than 3 parts by weight, the standard performance is insufficient, and if it is more than 6 parts by weight, it is excessive and causes an increase in cost.

Pozzolan is 20 to 30 times more effective than loess, and is a material used in buildings and a mineral. It is a siliceous material (volcanic ash) formed in the Cretaceous period.

Pozzolan is used in cosmetics, soap, cement, and interior finishing materials, and is known to emit anions, emit far-infrared rays, regulate humidity, and neutralize toxicity, just like a collection of good ingredients and reactions of ocher.

Pozzolanic materials include natural pozzolans such as tuff and diatomaceous earth, and artificial pozzolans such as fly ash and silica fume.

Fly ash is particles in a specific particle size range recovered by a dust collector from coal ash contained in waste gas discharged from a high-temperature combustion process of about 1400 ° C in a combustion boiler such as a thermal power plant using pulverized coal as fuel, and about 15 to 40% of raw coal degree occurs.

Fly ash is a representative material that causes a pozzolanic reaction, but since it is an industrial by-product, its physical properties change drastically.

Since the fly ash obtained by pulverizing and mixing fly ash with Portland cement is a spherical particle, the flowability is improved by a ball bearing action as the particles slide among themselves.

Because of this, it is possible to reduce the unit quantity required for concrete and to improve workability. In addition, fly ash alone does not have hydraulic properties, but since it contains a large amount of soluble SiO ₂ like pozzolan or white clay, it causes a pozzolanic reaction with Ca(OH) ₂ released from C ₃ S and C ₂ S to form insoluble CSH gel. generate

Long-term strength of more than 6 months is superior to ordinary Portland cement. In addition, since the hydrate produced by the pozzolanic reaction makes the tissue dense, it is known that both waterproofness and chemical resistance increase. The heat of hydration is also low, so it is suitable for mass concrete construction.

Silica fume has a very high fineness and a large amount of silica, so it causes a very effective pozzolanic reaction. While cement undergoes a hydration reaction, it reacts with lime and pozzolanic to produce stable calcium silicate hydrate.

Preferably, in the present invention, if the pozzolan is less than 5 parts by weight, the performance is deteriorated, and if it is 20 parts by weight or more, it is excessive, resulting in an increase in cost.

On the other hand, senosphere may be mixed in place of or in addition to pozzolan.

Cenosphere is a part of fly ash generated after coal combustion in coal-fired power plants. It is a spherical glass with a thin wall. Since it floats in water, it can be recovered from the surface of fly ash treatment plant. It is similar to coal ash.

Cenosphere is a spherical silica-alumina compound produced during the combustion process of a coal-fired power plant. It is a lightweight fine particle filled with air or inert gas inside.

It is generated at less than 1% of the total fly ash generation amount, and the amount that can be actually collected and commercialized can be produced very limitedly. It has various characteristics such as heat insulation, sound insulation, etc., so it can realize high added value in various uses.

Cenosphere is very resistant to abrasion. Color development (dispersion effect) is clear. Excellent gloss. Improve durability (brittle strength, etc.). Excellent insulation. When used as a tile tech emulsion, it has a dispersing effect, so it has a clear and fine color development effect. When refractories and cement are applied, it acts as a damp-proofing agent (anti-mold) to prevent structural corrosion.

Cenosphere has a melting point of about 1600 ° C and a particle size of 320 to 3000 orders.

When mixed with cement, strength can be increased and curing time can be shortened.

Looking at the characteristics of Cenosphere, it is a spherical shape. Spheres have the lowest surface area to volume ratio and are naturally the most efficient form, making them more versatile than other lightweight fillers.

As it has a spherical shape, it is possible to sufficiently wet the surface of Cenosphere by using a smaller amount of resin, binder, water, etc. than other types of fillers, which not only reduces the amount of resin or binder used, but also lowers the shrinkage rate as it is a solid shape. can

Since the spherical filler shows excellent fluidity, it is easy to spray, pump or apply, so it significantly improves workability and is easy to use in various fields.

Spherical fillers not only reduce shrinkage because they reduce the amount of binder used, but also directly reduce shrinkage with the shape itself.

It is lightweight. That is, the advantage of low density has been confirmed in many cases, and all plastics, sealants, putty, and noise buffers used in automobiles, ships, and aviation require as light as possible.

It is inactive (Inert). Cenosphere is originally an alumino-silicate sphere with very low reactivity. This chemical composition is very resistant to acids and alkalis, and its pH is neutral, so it does not interfere with the chemical properties or reactions of products in which Cenosphere is used.

It has free flowing. The free-flowing nature of Cenosphere makes it easy to handle in the factory and can be easily injected in dry form.

It has insulating properties. Cenosphere has a low thermal conductivity of 0.11 Wm ^- ¹K ^- ¹, and as a result, it is used in many fields requiring insulation, such as refractory insulation, oil pipeline insulation, geothermal cement, and exterior wall insulation stuccos.

It has a high melting point. The melting point of cenosphere is 1,250 °C, which is much higher than that of synthetic glass microspheres.

Therefore, it can be excellently used for high-temperature insulators, fire-resistant paints, and panels.

Cenosphere has a hard surface with a hardness of 5 to 6 Mohs, and the glassy surface is completely impervious to liquids and gases.

Cenosphere has excellent electrical properties in lightweight insulation products and is used in potting compounds, electrical encapsulation, solenoids, and buzzbars.

Cenosphere has a low oil absorbency of about 16g oil / 100g, which is only 25% of the density of other common fillers.

Xenosphere has high chemical purity, very strong activity, high molecular weight, good dispersion performance, strong surface adsorption and large surface area. It is easy to mix and absorb between molecules, so it is easy to produce, and it has unique properties such as quality stability, strength, tensile strength, UV protection, product aging prevention, color aging prevention, vivid color, surface precision and hardness, so product weight reduction and strength increase , scratch prevention, ceramic product hardening (curing) promotion, vivid color development effect.

Table 1 below is a component table of cenosphere according to an example.

Item ingredient list ingredient list one hundred degrees shem pool standard sempool standard H2O. XO2Si (dioxide content) 90-94 98-99.9 (fireproof / non-combustible) 1600℃ to 1750℃ P.H 6-7.5 6-7.5 BET (area) 220-280 600-700 Bulk density Specific gravity (density) 250-280 60-90 DBPml/100g (oil absorption amount) 300-370 400-500 the powder 320 2000 Burn decrement1000 ^o C，2h

4.5-7.0

4.5-7.0

6-8.0 heating decrement105 ^o C，2h

4.0-6.0

5.5-7.0 500% fixed stress pressure MPa ≥6.3 ≥6.3 Tensile strength. The tensile strength MPa ≥17.0 ≥20.0 Elongation at break elongation at break % ≥675 ≥750

INSULADD is a fine round hollow ceramic powder with aluminum silicate as its main component.

Insulad is a fine circular hollow ceramic powder with a size of 30 ~ 130㎛ made of aluminum silicate as a main component.

It has excellent insulation performance, so it can drastically reduce energy costs for air conditioning and heating, and the effect of preventing condensation due to temperature difference between indoor and outdoor is very excellent.

Since the insulad serves as a moisture barrier by forming a vacuum barrier of fine hollow ceramics within the paint film layer, it can maintain the function of other insulators inside and extend its lifespan along with the insulation effect of the insulad itself.

It is an environmentally friendly material that is completely free of 8 major harmful heavy metals, volatile organic compounds (VOCs) and toxicity. It is a non-combustible material with a melting point of about 1,800℃ and has a compressive strength of about 3,000N/㎠, which is very hard and durable. , It is a material that exhibits a semi-permanent insulation effect with the highest thermal resistance value of R20.

If the amount of the insulad is less than 20 parts by weight, there is a risk of insufficient insulation performance, and if it is more than 30 parts by weight, there is a risk of excessive cost increase.

The fragrant material is made by mixing a fragrant agent and a functional oil.

The functional oil is composed of silicone oil and pine needle extract oil.

Silicone oil has excellent stability against thermal oxidation and excellent cold resistance, so KF96 has fluidity even at -50°C and has good viscosity stability with little change in viscosity in a wide temperature range from low to high temperatures.

Pine needle extract oil is known to have excellent antibacterial and anti-inflammatory properties.

For the fragrance, 20 to 30% by weight of the fragrance and 70 to 80% by weight of the functional oil are mixed.

If the fragrance is less than 5 parts by weight, the fragrance performance is reduced, and if it is more than 10 parts by weight, there is a risk that it will be too excessive.

The heat shielding performance of the paint composition having heat insulation performance according to the present invention configured as described above is shown in the graph of FIG. 1.

Referring to FIG. 1, it is a heat shielding performance test result for unpainted (NP), general paint (OP) and ceramic paint (CP) samples.

As can be seen in FIG. 1, it can be seen that the internal temperature change of the three samples with respect to the set temp. change in the range of 0 to 50 ° C. shows a large difference for each type of coating.

That is, in the case of uncoated (NP) samples, it can be seen that the internal temperature maintains almost the difference from the uncoated case without a relatively large difference from the change in the set temperature, which is due to the material having a very high thermal conductivity of the iron pin (about 40 kcal / mh ℃ ), it is judged that there is almost no change in the difference in the change in the internal temperature due to the change in the outside air.

In addition, in the case of general paint-coated samples (OP), the temperature range is continuously maintained with a difference of about 2 to 3 ° C, whereas when insulated is mixed, the internal temperature is between 25 ° C and 40 ° C. The difference in change showed a heat shielding effect up to 10 ℃ or more, and especially showed an excellent heat shielding effect in the section where the external temperature rises.

Overall, the internal temperature change in the case of painting the insulation mixture paint was not sensitive to the change in ambient temperature (time lag phenomenon), thereby confirming the remarkable improvement in heat insulation performance of the paint according to the insulation mixture.

Meanwhile, in the basic performance test of the paint composition according to the present invention, each quality item specified in KS M 5310 synthetic resin emulsion paint (for external use) was tested, and the results of testing whether or not the required physical properties of the basic paint were met are shown in Table 2. showed up

Test Items standard value result Test Methods plain paint Paint composition of the present invention Non-volatile content
% of paint) 56 or higher 58 63 KS M
5310-'96 importance
25/25℃) 1.30 or later 1.38 1.36 lead
(KU) 70-90 85 88 drying time
Curing dry (minutes) within 60 30 30 45°
Diffuse reflectance (%) 87 or higher 90 91 concealment rate 0.96 or higher 0.98 0.98 Wash resistance (time) over 1000 times 1800 1700

Referring to Table 2, the test results for the performance specified in KS M 5310 for the general paint and the paint composition of the present invention, the paint and general paint mixed with ceramic powder in the non-volatile content, specific gravity, consistency and washability test items There was no particular difference in physical properties, and the performance exceeded the specified quality standards in all test items.

As a result, the paint mixed with ceramic was evaluated to have sufficient performance essential for paint.

In addition, if the theoretical coating amount is calculated from the results of specific gravity and non-volatile content, a theoretical coating amount of about 4.2 to 2.1 m² per 1 L can be calculated based on a dry film thickness of 150 to 300 mm by coating 2 to 3 times.

On the other hand, [Table 3] shows the test results of the physical property change of the paint according to the long-term temperature change, that is, the test result of the temperature change resistance performance, which was conducted to examine the durability against the long-term temperature change after the construction of the paint composition according to the present invention. .

After repeated tests under the above cycle conditions for general paint and ceramic mixed paint, no wrinkles, cracks, swelling, peeling, color change, gloss change, or other harmful deformations occurred in the coating films of the two types of paints, thereby It was confirmed that the ceramic mixture paint had sufficient long-term stability against external air changes after construction.

On the other hand, 10 to 20 parts by weight of a two-component resin may be further mixed with respect to 100 parts by weight of a paint main material in which a resin selected from polyurethane resin, vinyl chloride resin, silicone resin, and isocyanate resin is dissolved in ketone or ester.

The two-component resin serves as a binder and may be selected from the group consisting of urethane resin polyol, epoxy, MMA resin, and polyester.

MMA resin is an abbreviation of Methyl Methacrylate, and MMA resin refers to a thermosetting acrylic resin with MMA as the main reaction diluent.

The MMA resin is a material having the best safety enough to be used as a medical material inserted into the human body.

By applying this safe material to building finishing materials, it is already widely used in Europe and the Americas and is the only material that can replace various flooring materials and interior and exterior wall finishing materials that are harmful to the human body used in the domestic market.

The above materials contribute to the extension of the life span of buildings due to their physical properties, durability, water resistance, and weather resistance, and are in the limelight as safe construction materials for hygienic environments based on antibacterial resistance and non-toxicity.

[Table 4] shows the physical properties of the main material (paint composition) in which the two-component resin is mixed with the curing agent.

division Subject (paint composition) Curing agent (two-component resin) note Mixing ratio 100 100 weight ratio importance 1.1±0.1 1.2±0.1 23±0.5℃ viscosity 100 to 150 150 to 200 23±0.5℃ mixed viscosity 180±100 23±0.5℃ Curing time (hours) 24

The present invention is not limited by the above-described embodiments and the accompanying drawings, and various modifications and applications not exemplified within the scope of the technical idea of the present invention are possible, as well as substitution of components and equivalent other embodiments. Since it can be changed, the content related to the modification and application of the features of the present invention should be construed as being included within the scope of the present invention.

Claims (4)

Based on 100 parts by weight of a paint main material in which a resin selected from among polyurethane resin, vinyl chloride resin, silicone resin, and isocyanate resin is dissolved in ketone or ester,
2-6 parts by weight of propylene glycol, 5-10 parts by weight of butyl acryl-2ethylhexyl acrylate methyl methacrylic acid-acrylsilane copolymer, 20-30 parts by weight of colloidal silica, 5-10 parts by weight of antibacterial agent, 5-10 parts by weight of plasticizer 10 parts by weight, 3 to 6 parts by weight of an emulsifier, 10 to 15 parts by weight of pozzolan or cenosphere, 20 to 30 parts by weight of insulad, and 5 to 10 parts by weight of an aromatic substance are mixed.
The antimicrobial agent is any one or a mixture of two or more selected from the group consisting of silver (Ag) or platinum (Pt),
The plasticizer is dibutyl phthalate (DBP) or tri cresyl phosphate (TCP),
The fragrance is made by mixing a fragrance and a functional oil,
The functional oil is a coating composition having insulating performance, characterized in that consisting of silicone oil or pine needle extraction oil. delete delete According to claim 1,
Further mixing 10 to 20 parts by weight of two-component resin with respect to 100 parts by weight of the main raw material of the paint,
The two-component resin is a paint composition having insulating performance, characterized in that selected from the group consisting of urethane resin polyol, epoxy, MMA resin, polyester.

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