KR100421441B1 - paint composition comprising inorganic substance - Google Patents

Abstract

The present invention relates to an inorganic-containing paint composition, 70 to 75% by weight of SiO ₂ , 12 to 16% by weight of Al ₂ O ₃ , 2.5 to 5.0% by weight of Na ₂ O, 1.0 to 4.0 weight of K ₂ O based on the total weight of the inorganic 20 to 40% by weight of the inorganic mixture containing% and 0.2 to 0.5% by weight of MgO based on the total weight of the coating composition. In the case where the inorganic-containing coating composition according to the present invention is an aqueous coating, a) any one or more mixed resin emulsions selected from the group consisting of vinyl resins, acrylic resins, modified vinyl resins or modified acrylic resins having a glass transition temperature of -30 to 10 ° C. 15 to 35 wt%, b) 5 to 10 wt% plasticizer, c) 0.1 to 3 wt% desiccant and d) 20 to 40 wt% water. In addition, when the inorganic-containing paint composition according to the present invention is an oil-based paint, a) 25 to 45 wt% of a thermoplastic resin or an elastic resin, b) 5 to 10 wt% of a plasticizer, c) 0.1 to 5 wt% of a desiccant, and d) organic It further contains 20-40 weight% of solvents.

Inorganic-containing paint composition according to the present invention is excellent in dustproof and soundproofing effect due to a number of natural pores by the inorganic contained in the composition of the present invention, the remaining of bubbles generated during the production of paint and the elasticity of the resin.

Description

Paint composition comprising inorganic substance

The present invention relates to a coating composition, and more particularly to an inorganic-containing coating composition.

In general, the paint contains various polymers, solvents, and other additives such as vinyl resins, acrylic resins, melamine resins, and epoxy resins. Polymers, such as vinyl resin, are all components contained in paints and are important components that influence the performance of paints.

In addition, the solvent is used to control the drying rate when dissolving and coating the polymer, to improve workability, or to impart smoothness (fluidity) to the coating film.

Other additives include pigments, plasticizers, desiccants, dispersants, antifoaming agents, and the like, which are added in small amounts to the paint to adjust the properties of the paint.

In particular, the antifoaming agent is used to break up the pores generated in the paint composition, thereby suppressing the generation of bubbles to protect the surface and improve the appearance.

In addition, pigments are used to impart colors such as encyclopaedia to paints, but in addition to increasing durability, preventing metal from rusting, controlling gloss, increasing coating strength, or reducing costs. do.

Conventionally, inorganic materials such as talc and calcium carbonate have been used in paints, which have been used as fillers to reduce the price by adjusting the amount of paints or to adjust the gloss.

In general, coating paints, except for special cases caused by physical and chemical changes, cause the solvent to fly into the air, leaving portions of the polymer and additives to form a coating film.

In addition, conventional paints for special applications have been manufactured and sold as heat-resistant, fire-resistant paints, non-combustible paints (or flame retardant paints), mold-proof paints, electric insulating paints, chemical-resistant paints, and the like. Fluorescent paints that shine for some time after removal of these stimuli when they are subjected to light stimuli such as surface temperature (camelé), film barrier wavelengths, and ultraviolet rays to measure the surface temperature of the object or to determine the temperature distribution. Also, special paints such as luminous paints that shine even when there is no stimulus are also commercially available.

Meanwhile, rubber has been used as a dustproof material in the related art, but rubber has to be constructed as a structure when the structure is designed, and there is a problem that the price is high.

In addition, rock wool, sponges, solid plates and the like have been used as the soundproofing material, but it has a disadvantage that it is not only expensive but also requires a separate adhesive work during construction.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, an object of the present invention is to provide an inorganic-containing coating composition excellent in dust and sound insulation effect.

Another object of the present invention is a fluid liquid or semi-solid phase is not only easy to install, can be freely constructed regardless of the form of the body, the thickness is also thin, can maximize the space utilization, convenient workability It is providing the dustproof or soundproofing inorganic containing coating composition.

1 illustrates the structure after drying of the inorganic-containing coating composition of the present invention,

Figure 2 illustrates a method for testing the sound insulation effect,

3 shows a method of testing the degree of impact,

4 is a photograph showing the degree of cracking after the impact on the inorganic-containing coating composition and the handy coat of the present invention,

5 shows a method for testing the dustproof effect,

FIG. 6 shows the experimental result of FIG. 5 as a frequency response function.

Hereinafter, the present invention will be described in detail.

The inorganic-containing paint composition according to the present invention is 70 to 75% by weight of SiO ₂ , 12 to 16% by weight of Al ₂ O ₃ , 2.5 to 5.0% by weight of Na ₂ O, 1.0 to 4.0% by weight of K ₂ O and An inorganic mixture containing 0.2 to 0.5 wt% of MgO is included in an amount of 20 to 40 wt% based on the total weight of the coating composition.

If the inorganic content is less than 20% by weight based on the total weight of the coating composition, the dust and sound effect are drastically lowered. If the inorganic content is more than 40% by weight, the oil absorption amount (36 to 40) may cause difficulties in manufacturing and operation. In addition, the hardness of the coating film is rapidly weakened.

The coating composition according to the present invention contains an inorganic material, so that numerous natural pores and bubbles generated during the manufacture of the paint remain due to thixotropy, and thus have a form similar to a sponge itself.

The inorganic material used in the present invention is 70 to 75% by weight of SiO ₂ , 12 to 16% by weight of Al ₂ O ₃ , 2.5 to 5.0% by weight of Na ₂ O, 1.0 to 4.0% by weight of K ₂ O and 0.2 to 0.5% by weight of MgO. It is preferable to contain. In addition, the average particle size is 90 ~ 130㎛, the particle size is 1 ~ 2500㎛, the volume specific gravity is 0.09 ~ 0.25g / cm ³ , the pH of water dispersion 6.5 ~ 7.5, melting point 1250 ~ 1350 ℃, hardness 5 ~ 6Mohs The oil absorption amount is preferably 36 to 40 and the thermal conductivity is 0.05 Kcal / mh ° C.

One embodiment of the inorganic-containing coating composition according to the present invention includes a case where the inorganic-containing coating composition according to the present invention is an aqueous coating material.

In the case where the inorganic-containing coating composition according to the present invention is an aqueous coating, a) any one or more mixed resin emulsions selected from the group consisting of vinyl resins, acrylic resins, modified vinyl resins or modified acrylic resins having a glass transition temperature of -30 to 10 ° C. 15 to 35 wt%, b) 5 to 10 wt% plasticizer, c) 0.1 to 3 wt% desiccant and d) 20 to 40 wt% water.

If the content of the resin is less than 15% by weight, not only the adhesion decreases, but also the drying speed is slowed. When the content of the resin exceeds 35% by weight, the resin fills the pores produced in the coating composition according to the present invention, which not only lowers the properties of the inorganic material, but also may cause gas generation in a fire.

The inorganic-containing paint composition according to the present invention may further include a plasticizer to adjust the glass transition temperature (Tg) and elasticity. Examples of preferred plasticizers include ethyl glycol or texanol.

In addition, the inorganic containing coating composition according to the present invention may further include a desiccant to improve the drying rate. Examples of preferred desiccants include metal salts such as lead, cobalt, manganese and zinc.

The inorganic-containing coating composition according to the present invention may further contain an antiseptic, a fungicide, or the like as necessary.

In addition, the inorganic-containing coating composition according to the present invention may further be added with a pigment in order to obtain a desired color.

As another embodiment of the inorganic containing coating composition which concerns on this invention, the case where the inorganic containing coating composition which concerns on this invention is oil-based paint is mentioned.

In the case where the inorganic-containing coating composition according to the present invention is an oil-based paint, a) 25 to 45% by weight of a thermoplastic resin, an elastic resin or a mixture thereof, b) 5 to 10% by weight of a plasticizer, c) 0.1 to 5% by weight of a drying agent, and d ) 20 to 40% by weight of an organic solvent.

Examples of the thermoplastic resin or elastic resin that can be used when the coating composition is an oily paint include resins having elasticity such as elastic urethane resin, lava epoxy resin, thermoplastic acrylic resin, melamine resin, alkyd resin, and the like.

Moreover, as an example of the plasticizer which can be used when a coating composition is an oil-based paint, D.O.P. (Dioctyl Phthalate), Castor Oil, etc. are mentioned.

Examples of the organic solvent include xylene, toluene, butyl acetate, ketone and the like.

The rest is the same as the case where the inorganic-containing paint composition according to the invention is an aqueous paint.

The inorganic-containing paint composition according to the present invention is a dust-proof paint or a sound-proof paint where general dust such as houses, schools, factories, apartments, automobiles, ships' engine rooms, machine rooms and machine parts, and road soundproof walls are required. Can be used as.

In this case, it is also possible to paint a wall or the like in the form of putty, and if necessary, brushing, spraying and shedding are also possible. In addition, the interior effect can be created by working with a trowel, hera, or the like, and a primer can be constructed in advance.

In general, the coating thickness is preferably 2 to 5 mm, but may be more than that in order to maximize the effect.

(Example)

In order to demonstrate the inorganic containing coating composition of this invention in more detail, an Example is given to the following and it demonstrates concretely, but this invention is not limited by these Examples.

Example 1 Mixed Resin Emulsion for Water-Based Paint

A mixed resin emulsion having the following composition was prepared.

ingredient Content (% by weight) Acrylic Ester Copolymer 46 Styrene monomer 2 Acrylnitrate 2 2-ethylhexyl acrylate One CF-10 ^* One water Remaining amount system 100

*: Surfactant manufactured by RohmHass, USA

The emulsion prepared as described above was a milky white liquid, specific gravity was 1.02, the viscosity at 25 ℃ 100cps, pH 7.2, the glass transition temperature was -10 ℃.

Example 2 Preparation of Water-Based Paint

Using the mixed resin emulsion obtained in Example 1 to prepare an aqueous coating having the following composition. At this time, as inorganic materials, SB403 (SiO ₂ 70-75 wt%, Al ₂ O ₃ 12-16 wt%, Na ₂ O 2.5-5.0 wt%, K ₂ O1.0-4.0 Weight percent and 0.2-0.5 weight percent MgO) were used.

ingredient Content (% by weight) Mixed resin emulsion of Example 1 31 Mineral 30 Ethyl glycol 8 24% -Pb 2 water Remaining amount system 100

Example 3 Mixed Resin for Oil Paint

A mixed resin for an oil paint having the following composition was prepared.

ingredient Content (% by weight) Propene Glycol Methyl Ether Acetate 10 GP-3000 ^* 30.5 PP-3000 ^** 14.7 1,3-butylene glycol 1.2 Trimethylolpropane 1.6 Toluene diisocyanate 21.5 Cellulose Acetate 5 4,4-methylbisorthochloroaniline 0.65 xylene Remaining amount system 100

*: Kumho Chemical Polyol

**: Kumho Chemical Polyol

The mixed resin prepared as described above was a colorless liquid, having a solid content of 70%, an NCO content of 5.76%, and a viscosity of 67 ku at 25 ° C.

(Example 4: Preparation of oil-based paint)

Using the mixed resin obtained in Example 3 to prepare an oil paint having the following composition. At this time, as the Samson Co., Ltd. are commercially available currently as the light SB403 (SiO ₂ 70~75% by weight of inorganic, Al ₂ O ₃ 12~16 wt%, Na ₂ O 2.5~5.0 wt%, K ₂ O 1.0~4.0 wt. % And MgO 0.2 to 0.5% by weight) was used.

ingredient Content (% by weight) Mixed resin of Example 3 30 Mineral 30 D.O.P 6 24% -Pb One xylene Remaining amount system 100

Example 5 Structure of Dried Paint Composition

The coating composition obtained in Example 2 was applied to a base material with a thickness of 3 mm and dried. After drying, only the coating film was removed and air was blown into the coating film to check the flow of air. As a result, as shown in Figure 1, it was confirmed that the air escapes through the coating film.

Example 6 Sound Insulation Effect

In order to examine the sound insulation effect, an experiment as shown in FIG. 2 was performed.

First, the coating composition obtained in Example 2 was applied to the inside of the circular can made of iron plate with a thickness of 3 mm and dried, and then a bell was placed inside the circular can, and the top of the circular can was covered with a glass plate. Next, the bell was ringed and noise was measured with a sound level meter TES-1350A (manufactured by TES Electrical Electronic Corp., Taiwan) at a distance of 2 cm from the outside of the circular can. At this time, the bell noise was 107dB and the ambient noise was 40dB.

Next, a handy coat (manufactured by Terra Co., Ltd.), which is an aqueous Pade paint, was applied to the inside of a round can made of a steel plate and dried to have a thickness of 3 mm, and then the same experiment was performed.

Finally, a 5 mm thick sponge was attached to the inside of a round can made of iron plate, and then the same experiment as above was performed.

The results were as follows.

Round cans Paint composition of Example 2 Handy Coat Sponge 85 dB 70 dB 75 dB 80 dB

As can be seen from the above, it was confirmed that the soundproofing effect of the inorganic-containing coating composition according to the invention is the most excellent. It is believed that numerous pores produced by the minerals contained in the composition of the present invention not only retain and extinguish the sound, but also maximize the surface area at which the pores change sound waves into vibrations, thereby maximizing sound absorption and exhibiting sound insulation effects.

Example 7 Impact Test

In order to determine the degree of impact applied to the surface during the impact, an experiment as shown in FIG. 3 was performed.

First, Specimen 1 and Specimen 2 were prepared by coating the paint composition obtained in Example 2 and Handy Coat (manufactured by Terra Co., Ltd.), which is an internal aqueous pad paint, with a thickness of 2 mm on a 5 mm thick slate plate, followed by drying. . Next, 100 g weights were dropped on each of the prepared specimens at a height of 30 cm. The degree of impact was determined by visual inspection of the degree of cracking on the specimen surface.

As a result of the experiment, there was no change in the specimen 1 as shown in Figure 4a, in the case of the specimen 2, as shown in Figure 4b it was confirmed that the crack of the slate plate.

Example 8 Dustproof Effect

In order to determine the dustproof effect was performed as shown in FIG.

First, the coating composition obtained in Example 2 and Handy coat (manufactured by Terra Co., Ltd.), which is the coating composition obtained in Example 2, were coated with a thickness of 3 mm, respectively, on a steel plate having a width of 30 cm, a height of 30 cm, and a thickness of 1.5 cm. By drying, specimen 1 and specimen 2 were prepared.

Next, each of the specimens attached to the sensor in the corner was installed in the air, after impact on the iron plate, using a noise vibration meter HP35665A (manufactured by Hewlett-Packard Co.) to measure the magnitude of the frequency response. The result is shown by the frequency response function (FIG. 6).

As can be seen in Figure 6, the frequency response of each frequency of the inorganic-containing coating composition of the present invention was significantly lower than the case of the iron plate, it was confirmed that significantly lower than the case of the handy coat.

This is due to the numerous pores produced by the inorganic matter contained in the composition of the present invention, a lot of space in the composition is secured, thereby causing an embossing effect to maximize the elasticity of the organic matter in the composition, thereby minimizing vibrations coming from inside and outside Seems to be.

As described above, the inorganic-containing paint composition according to the present invention has a lot of pores produced by the minerals contained in the composition of the present invention, due to the remaining of the bubbles generated during the manufacturing of the paint and the elasticity of the resin, the dust and sound insulation effect great.

In addition, the inorganic-containing paint composition according to the present invention is a fluid liquid and semi-solid phase, unlike the conventional solid-phase dustproof material and soundproof material, when used as a dustproof material and soundproof material, not only easy construction, but also regardless of the form of the body It can be freely deformed and its thickness is thin, maximizing space utilization.

Claims (6)

70 to 75% by weight of SiO ₂ , 12 to 16% by weight of Al ₂ O ₃ , 2.5 to 5.0% by weight of Na ₂ O, 1.0 to 4.0% by weight of K ₂ O and 0.2 to 0.5% by weight of MgO, based on the total weight of the inorganic material A dust-proof or soundproof inorganic-containing paint composition comprising 20 to 40% by weight of the inorganic mixture, based on the total weight of the paint composition. According to claim 1, wherein the inorganic-containing paint composition is an aqueous paint a) any one or more selected from the group consisting of a vinyl resin, acrylic resin, modified vinyl resin or modified acrylic resin having a glass transition temperature of -30 ~ 10 ℃ A dust-proof or soundproof inorganic-containing coating composition further comprising 15 to 35% by weight of a mixed resin emulsion, b) 5 to 10% by weight of a plasticizer, c) 0.1 to 3% by weight of a desiccant, and d) 20 to 40% by weight of water. According to claim 1, wherein the inorganic-containing coating composition is an oil-based paint, a) 25 to 45% by weight of a thermoplastic resin, an elastic resin or a mixture thereof, b) 5 to 10% by weight of a plasticizer, c) 0.1 to 5% by weight of a desiccant % And d) 20 to 40% by weight of an organic solvent, a dust-proof or soundproof inorganic-containing coating composition. delete delete The inorganic-containing paint composition according to any one of claims 1 to 3, wherein the inorganic-containing paint composition is coated by a brush, spraying, or trowel construction.