KR102076789B1 - Nonflammable Paint Composition Using Pyrophyllite - Google Patents

Abstract

The present invention relates to a nonflammable coating composition using leadstone. In detail, the coating composition having the optimal blending ratio to have the non-flammable performance of flame retardant class 1, the excellent film adhesion, and the strong hardness of the final product performance using the lead minerals, eco-friendly inorganic binders, and other additives, which are abundant mineral resources in Jeonnam area. It is about.

Description

Nonflammable Paint Composition Using Pyrophyllite

The present invention relates to a nonflammable coating composition using leadstone.

The present invention is an inorganic paint having a nonflammable performance of flame retardant class 1, excellent coating property, and a strong hardness, using the lead minerals, eco-friendly inorganic binders, and other additives, which are abundant mineral resources in Chonnam region. And the results of the physical and component analysis of the fillers and additives, and the results of the technology development of the method of increasing the adhesion strength and adhesion strength of metal materials to inorganic binders and inorganic paints.

In particular, the feldspar used in the present invention is an environmentally friendly and inexpensive mineral that produces 52% of the national production (42% of the national reserves) in Jeollanam-do (Haenam, etc.). It can also be used in contaminated environments.

The basic constituents of feldspar are SiO ₂ (> 65%) and Al ₂ O ₃ (> 25%), which can be cured by mixing with an alkaline inorganic binder. There are various colors from white to green and specific gravity of 2.7 ~ 2.9 It is suitable for use as a paint solid, having a low hardness of about 1 to 2.

In addition, the crystal structure of feldspar has a three-layered layer structure having an octahedral layer between two tetrahedral layers, and since it has no hydroxyl ions on the crystal surface, the plasticity is lower than that of kaolin mineral, and thus it can be used for various purposes including fillers.

In particular, low-grade feldspar (iron, calcium, etc. is present in the range of 3%) has a significant change in color during heat treatment and can not be used as a tile or porcelain material, there is little use.

However, when used as a paint solid, it is hardly affected by these impurities, so that low-grade feldspar can be purchased at a lower price, thereby lowering the cost of the paint.

On the other hand, look at the related prior patent documents of the present invention.

According to KR 10-0730029 B1, a method for preparing paint containing natural minerals (Jun. 13, 2007), it further comprises activated carbon fibers to increase durability by including natural minerals and titanium dioxide and having excellent film quality. 1. A method of preparing a paint comprising a natural mineral comprising: (1) mixing a powder of tourmaline and feldspar, wherein the tourmaline is mixed with feldspar in a ratio of 1: 0.1 to 10 by weight to obtain a natural mineral powder mixture. Difference mixing step; (2) a secondary mixing step of preparing a raw material mixture by mixing the thermosetting resin powder as 0.01 to 15% by weight and the remaining amount of the natural mineral powder mixture; (3) a fiber forming step of preparing the raw material mixture in a fibrous form; (4) a carbon fiber manufacturing step of thermally curing the raw material mixture formed in a fibrous form and then carbonizing in an inert atmosphere to produce carbon fibers; (5) an activation step of activating the produced carbon fiber with activated carbon fiber; And (6) 0.1 to 5 parts by weight of pigments, 2 to 3 parts by weight of emulsifier, 10 to 20 parts by weight of dispersant, 0.1 to 0.5 parts by weight of 25% concentration of ammonia water, and stabilizer 2 to 3 to 100 parts by weight of the activated activated carbon fiber. A paint preparation step of obtaining an aqueous paint by mixing a weight part, 0.8 to 1.2 parts by weight of ethylene glycol, 40 to 50 parts by weight of an acrylic resin emulsion of 0.2 to 0.3% by weight of solid and 80 to 150 parts by weight of water as a solvent; Is disclosed.

According to KR 10-2009-0011739 A, Nanocomposite anticorrosive coating for ship undercarriage, 2009. 02. 02., 50 to 60 parts by weight of solvent, talc (talc) in 100 parts by weight of epoxy resin 55 to 65 parts by weight, 55 to 65 parts by weight of clay, 6 to 10 parts by weight of zinc powder, 3 to 5 parts by weight of nanooxide powder, 1.5 to 2.5 parts by weight of dispersant, and 1.5 to 2 sedimentation inhibitors. The present invention relates to a nanocomposite anticorrosive coating for a marine undersea, comprising a main portion of a mixture consisting of 5 parts by weight, and a polyamide curing agent, by adding zinc powder and nanooxide powder to a main epoxy resin substrate. By manufacturing, the use of nanooxide powders such as titanium dioxide (TiO2), zirconium oxide (ZrO), and magnesium oxide (MgO) reduces the amount of zinc powder used, minimizes the thickness of the coating film, and extends the anticorrosive function and life as much as possible. One point is disclosed.

According to KR 10-2005-0088893 A, Ceramic waterproof coating using industrial waste, 2005. 09. 07., Ceramic waterproof coating using industrial waste, more specifically, ceramic waterproof paint containing inorganic materials It is related to the high inorganic rags, coal ash and other inorganic materials with good mixing with the cement as follows and adapt to the cement, as a result of the coating film adhesion and durability (paint life) was found to be higher, Finely pulverize the high-loss rag powder to 300 mesh or less, and make the coal ash to 300 mesh or less, and then fire it at about 1200 ℃ for sodium carbonate, silicon dioxide, and a little bit of lead, and mix them together. Add appropriate amount of phosphorus chromium dioxide, and add proper amount of purified water, water-soluble acrylic resin, urethane resin, SBR resin or water-soluble epoxy resin. The composition is prepared by stirring well and adding a small amount of surfactant as a dispersant. The industrial wastes, such as high-loss lag and coal ash, contain almost 70% of the total inorganic material, and serve as a main composition material. It is disclosed that the purpose is to produce a waterproof ceramic coating.

As such, the paint or coating composition utilizing the same in terms of mineral or resource recycling has been known from several patents early on.

However, as described in the present invention, the inorganic flame paints having the non-combustible performance, excellent film adhesion, and high hardness of flame retardant class 1, which are final product performances, using lead minerals, eco-friendly inorganic binders, and other additives, which are abundant mineral resources in Jeonnam region, have been disclosed. In particular, the optimum blending ratio for achieving the above effects is not disclosed as described above, but is disclosed only through the present invention.

KR 10-0730029 B1, method for preparing paints containing natural minerals, 2007. 06. 13. KR 10-2009-0011739 A, Nanocomposite anticorrosive coating for ships, 2009. 02. 02. KR 10-2005-0088893 A, Waterproofing Ceramic Coating Using Industrial Waste, 2005. 09. 07.

The present invention, as described above, by using a lead mineral, environmentally friendly inorganic binder, and other additives, abundant mineral resources in Chonnam region, inorganic paints with non-combustible performance and excellent film adhesion, high hardness of flame retardant grade 1 as the final product performance Its purpose is to develop.

MEANS TO SOLVE THE PROBLEM In order to solve the subject mentioned above, this invention makes a nonflammable coating composition containing leadstone containing a binder, a pigment, and an additive as one means of solving.

Preferably the feldspar is characterized in that 20 to 40% by weight, the non-flammable coating composition using the feldspar as one means of solving.

In addition, preferably the binder is 45 to 60% by weight, the pigment is characterized in that 40 to 55% by weight, the non-flammable coating composition using a feldspar as one means of solving.

Also preferably, the binder may include a first binder and a second binder; The pigment is a first pigment and a second pigment; And the additive is a first additive and a second additive; characterized in that, as a means of solving the non-combustible coating composition using a feldspar.

More preferably, the first binder is 20 to 40% by weight; The second binder is 20 to 30% by weight; The first pigment is 40 to 50% by weight; The second pigment is 3 to 4% by weight; And the second additive includes water, wherein the water is less than 2% by weight.

On the other hand, the pretreatment process is a degreasing process treatment, characterized in that the coating composition using the paurite produced by the above-mentioned 1 to 5 as one means of solving.

On the other hand, the non-flammable coating composition using leadstone is characterized in that the refractory temperature is 1000 degrees or more as one means of solving the problem.

One embodiment according to the present invention can provide an environmentally friendly non-combustible paint does not contain excellent non-combustible performance and VOCs (Volatile Organic Compounds, volatile organic compounds), heavy metals.

In addition, one embodiment according to the present invention can provide an easy-to-use, eco-friendly non-combustible paint with excellent adhesion by simply degreasing process without the aging process and special pre-treatment (sandblast) that is a disadvantage of the existing ceramic paints.

1 is a schematic diagram of a film forming mechanism.
2 is a schematic of the coating, curing and bonding of a three-dimensional polymer structure.
Figure 3 is a photograph taken to dry at 130 degrees CERA-WALL paint coating is completed.

Hereinafter, preferred embodiments of the present invention will be described in detail along with the manufacturing process. However, the specific numerical values set forth as examples are only intended to describe the technical spirit of the present invention in more detail, and the technical spirit of the present invention is not limited thereto, and various modifications are possible in advance.

In addition, in the specification of the present invention, the same reference numerals will be used for the same parts, and a detailed description of parts that can be easily created by those skilled in the art as known in the art will be omitted. Let's do it.

Prior to a specific embodiment of the present invention, a brief description of the film forming mechanism in relation to the present invention (see Fig. 1, film forming mechanism).

Three-dimensional crosslinking of metal compounds (SiO ₂ , Al ₂ O _3, etc.) and various ions (silicate ions, polysilicate ions, lithium ions, etc.) on water-soluble colloids to form a water-resistant and dense coating film by reaction with catalysts and additives The bond forms a gel, a subcondensate (Gelation).

Next, after adding ceramic fiber, inorganic pigment, and other additives, which are subsidiary materials, to improve the bonding strength, crack prevention, and aesthetic effect, they are processed in a ball mill and bead mill for a certain time to improve the function of semi-finished products, and then to a certain temperature. When hardening at, it forms a three-dimensional strong network coating.

The coating film formed in this way is a strong ionic bond, so that the bond between silicon and oxygen (O-Si-O) energy (101kca / mol) is greater than the ultraviolet energy (85kcal / mol), so there is no breakdown of molecular bonds caused by ultraviolet rays and high heat resistance (1200 ℃) and the durability can be sufficiently maintained from the attack of various toxic compounds (see also Fig. 2, the coating schematic of the coating, curing and three-dimensional polymer structure).

Non-combustible coating composition using a feldspar according to an embodiment according to the present invention has a difference as shown in Table 1 compared to the conventional ceramic paint.

TABLE 1

Hereinafter, the present invention will be described in more detail.

One embodiment according to the present invention provides a non-flammable coating composition comprising a lead, including a binder, a pigment, an additive.

The feldspar is 20 to 40% by weight, preferably 30% by weight, when the content of the feldspar is outside the above range, the physical properties (viscosity, paintability, etc.) of the coating composition are not good, and 30% by weight In this case, the optimum physical properties are exhibited.

The binder is 45 to 60% by weight, the pigment is 40 to 55% by weight, preferably 50 to 60% by weight and 43 to 48% by weight, more preferably 55% and 45.5% by weight, respectively. .

Even when the weight% of the binder and the pigment is outside the above range, the physical properties of the coating composition are not good, and exhibits an optimum effect at 55% by weight and 45.5% by weight, respectively.

On the other hand, the binder is a first binder and a second binder; The pigment is a first pigment and a second pigment; And the additives may be composed of a first additive and a second additive; in the light of the knowledge and skill level of those skilled in the art can constitute a variety of binders, pigments and additives.

For example, the first binder may be silicate-based, the second binder may be lithium silicate-based, and the first pigment may include titanium dioxide or calcium carbonate, and the second pigment may be talc or glass fiber as an extender pigment. ), Wherein the first additive may include an antifoaming agent, a leveling agent, and a thickener, and the second additive may include texanol, butyl cellulose solution, thickener, and water as imparting functionality. . Wherein the glass fiber has the effect of preventing cracks, the water is to control the final viscosity.

The first binder is 20 to 40% by weight; The second binder is 20 to 30% by weight; The first pigment is 40 to 50% by weight; The second pigment is 3 to 4% by weight; And the second additive includes water, wherein the water may be less than 2% by weight.

On the other hand, as shown in Table 1, the non-combustible coating composition using the feldspar according to the present invention has excellent adhesion to the degreasing process simply by a pretreatment process without the aging process and special pretreatment (sandblast), which is a disadvantage of the conventional ceramic paints Has

In addition, the non-combustible coating composition using the feldspar according to the present invention has a significant effect compared to the refractory temperature of the existing ceramic paint is 500 to 600 degrees at a refractory temperature of 1000 degrees or more.

In addition, the drying temperature can be dried at 120 degrees or less, unlike the conventional baking at 200 degrees or more, and if it requires fire resistance, such as shivent walls, aluminum plates and steel products, not limited to conventional building exterior materials and kitchen equipment It can be applied regardless of its purpose.

Hereinafter, look at a specific experimental example according to the present invention.

< Experimental Example 1 . For each material  Component Analysis>

Component analysis for each material needed to develop non-combustible water-based inorganic paint was conducted.

For Experimental Example 1, raw materials such as lead stone (Korean powder P18.4) and inorganic binder (PS-P100, potassium silicate-based inorganic binder) were prepared, and the properties and specifications of each were investigated and measured. After the feldspar is added, the mixed state and the reaction are tested, and the state and time of the continuous drying state and the time-drying coating film of the inorganic binder are tested at a predetermined temperature.

Experimental results The particle size, the components of the feldspar are shown in Table 2 below.

TABLE 2

As a result of the analysis of the feldspar, the particle size was about 325 mesh and had a size of about 20 to 25 μm, mainly composed of alumina (Al ₂ O ₃ ) and silica (SiO ₂ ).

On the other hand, the test results for the inorganic binder (PS-P100) are shown in Table 3 below.

TABLE 3

The inorganic binder is a transparent liquid binder is a strong alkaline, inorganic binder with strong bonding strength by the cross-linking of various groups of silicate ion monomer of silicate, polysilicate ion colloidal phase of the paint manufacturing process.

In addition, the product types and physical properties of the fillers and the physical properties improving agents, which are necessary for the development of non-combustible water-based paints, were examined.

As a subsidiary material, dispersant cerasper (44CF), glycerin 99%, titanium dioxide (R902), talc (KG 325), calcium carbonate, ceramic binder (duty special paint), antifoaming agent, leveling improving agent, thickener, and the like were prepared. In addition, an aluminum sheet, a galvanized sheet, and an aluminum composite sheet, which are metal sheets, which are coating materials, were prepared.

The algae and characteristics of the subsidiary materials are as shown in Table 4, and the kind and characteristics of the coating material are as shown in Table 5 below.

TABLE 4

TABLE 5

We studied and reviewed the product specifications and characteristics of the inorganic binder (SFR-0582), which is the main material necessary for the production of inorganic paints and which has a great influence on the properties of paint film.

Inorganic binder (SFR-0582) is a modified silicate-based inorganic binder and can be used in a variety of coatings. It is an environmentally friendly material, and has excellent strength and robust coating film formation, water resistance, acid resistance and heat resistance. Therefore, the application field is used for high temperature and heat insulation paint, non-combustible paint, insulation paint requiring insulation, and the like. The drying temperature is 120 ° C to 130 ° C, and the appropriate coating thickness is about 30 to 50 µm.

Properties and specifications of the inorganic binder (SFR-0582) are shown in Table 6 below.

TABLE 6

< Experimental Example  2. Silicate Binders and Lithium Silicate  Series Binder Properties Maximized Non-flammable Aqueous Paint Composition>

Each of the paints containing leadstone was tested and manufactured using silicate-based binders and lithium silicate-based binders. However, in order to maximize the characteristics of silicate-based binders and lithium silicate-based binders because the adhesion and hardness of water resistance were lower than the target values, The two materials were mixed.

In addition, by changing the mixing ratio and the use of additives, it is intended to develop good non-combustible water-based paints that are good in all test items.

The test conditions are as follows.

The weather information at the time of test was sunny, average temperature was 17 ℃, humidity was 60%, inorganic binder (PS-P100 and SFR-0582), feldspar powder (Korean powder, 325mesh), titanium dioxide (TiO ₂ , Ponsa R902), calcium carbonate (CaCO ₃ , Eugene Unemployment P-30, 325mesh), Talc (Youngwoo Chemical KG-325), Ceramic Fiber (Ceramic Fiber, Shinjung FC, 3M-S32), Texanol (C ₁₂ H ₂₄ O ₃ , Anti-Crack Additives) Prepare butyl cellulose solution, other leveling improver, antifoaming agent and the like.

Final composition ratio of the non-combustible water-based paint is shown in Table 7 below.

TABLE 7

50g of SFR-0582 was added to give flexibility to the coating, PS-P100 increases hardness and SFR-0582 increases flexibility, but the bubbles of PS-P100 cause cracking and peeling.

Specific test methods are as follows.

(1) PS-P100 and SFR-0582, the main binders, are agitated for 30 minutes at 150RPM with a high speed stirrer and coated on galvanized steel sheet and aluminum sheet to inspect the bonding state and cracks.

(2) If there is no abnormality in the binder after synthesis and mixing, add the functional additives texanol and butyl cellulose solution and then stir.

(3) When mixing is completed, first stir the feldspar powder, which is the main raw material, to the binder and stir at more than 200 RPM. At this time, the position of the impeller is periodically changed to prevent uniform mixing and precipitation.

(4) When mixing leadstone is completed, add talc, TiO ₂ , calcium carbonate, etc. in order of heavier specific gravity. When the addition is completed, high speed stirring is performed at 200 RPM.

(5) The feldspar powder used in this case is a product produced from Korean powder located in Haenam, and the general chemical formula is Al ₂ O ₃ · ₄ SiO ₂ · H ₂ O, and the product name is P-18.5. %, Al ₂ O ₃ : 18.5%, Fe2O3: 0.29%, the clay mineral that is the lead of the layered silicate mineral, the TiO ₂ powder mainly used as pigment and filler photocatalyst was DuPont R-902 product. It has a very strong oxidizing power and a very good hiding power. In addition, a product having antibacterial and sterilization sterilization was used.

(6) When mixing and dispersing pigments and extender pigment functional additives are completed, add antifoaming agent and ceramic fiber while stirring slowly. After mixing and dispersing completely, leave it for about 1 hour, apply it to the specimen, dry it at 100 ℃ for 20 minutes, and check the state of the paint before adding it to the ball mill.

(7) If there is no abnormality, stir and mix in a stirrer at low speed and then put into a ball mill.

(8) The ball mill used an alumina container having excellent hardness, and a ball of 3 to 5 sized alumina balls was used. The amount of paint and ball mill is 7: 3 and the empty space of the ball mill secures about 20% of the space, and the grinding method is configured by the shearing force so that uniform particles can be obtained by uniform grinding while the ball mill rotates.

(9) When the ball mill grinding for 5 hours is completed by the above method, filter by # 250 SUS net and store in the designated container.

(10) The final finished paint is checked for basic physical properties such as appearance and color, and then aged by adding other antifoaming agents and leveling improvers.

The test results are shown in Table 8 below.

TABLE 8

After the ball mill process, the manure process was also smooth at # 250, and spray paintability was tested by adding 2% water.

Due to the characteristics of the inorganic paints, brushing and R011 air spraying are available. In this study, R & D and review were conducted based on the air spray. The spray coating machine uses the I-Wada PD-30 pump and W-61 spray gun with a nozzle diameter of 1.5 mm 4.5. It was used as the air pressure of kg / cm ² , the distance from the base material for painting was painted at a position of about 20cm. The viscosity and spreadability of the paint were also good.

Therefore, as a result of developing non-combustible water-based paint using local feldspar, the research and development paint is named Cera-Wall due to its good physical properties such as viscosity, paintability and adhesion.

< Experimental Example  3. Coating performance  Test>

Spray coating and brush painting, drying, non-flammability, adhesion, acid resistance, stain resistance, pencil hardness, etc. are tested on galvanized steel sheet, aluminum sheet, composite sheet, and general steel to check the coating performance.

The test conditions are as follows.

Prepare the base material (aluminum plate 2.0T, galvanized plate 1.6T, composite plate 4.0T), and pretreatment method is to degrease galvanized plate with isopropyl alcohol, aluminum plate with degreasing water chrome treatment, and composite plate with degreasing Treatment, paint preparation (Cera-Wall), coating equipment (Iwata W-61 paint gun (nozzle 1.5mm), PD-30 painting pump), drying equipment (test infrared ray drying furnace), test equipment and reagents (film thickness gauge) , Gloss meter, adhesion tester, pencil hardness tester, other reagents and superfluid).

The test method is as follows.

(1) The prepared base metal is pretreated.

(2) When the pretreatment of each base material is completed, preheat it for 20 minutes in the preheating chamber of ambient temperature 50 ℃ to prevent flow during spraying and homogeneous coating.

(3) The preheated specimen is transferred to a simple painting room, placed on a horizontally adjusted coating table, and the air pressure of the prepared PD-30 pump is adjusted to 4.5kg / cm2.

(4) When all the paint preparations are completed, adjust the inorganic paint paint using leadstone to pot cup # 4 25 ~ 30sec, which is the best viscosity for painting after stirring in a stirrer.

(5) When painting preparation is completed, paint 3 ~ 4 times from side to side after adjusting the spraying width injection pressure with paint gun. At this time, the paint is stirred at low speed of 30 RPM to prevent precipitation and uniform color mixing.

(6) The finished specimen (wet film thickness is about 10 ~ 80μm) is transferred to a drying furnace preheated to 130 ℃ and dried for about 30 minutes.

(7) After coating and drying, paints are stored at room temperature for about 24 hours to test the coating properties of the product.

3 is a photograph taken of the specimen is completed coating.

As a test result, the test results of coating properties after coating and drying non-flammable paint products using local feldspar.The test results of metal specimen coating properties are shown in Table 9 below, and the test results of coating properties after iron and gypsum board coating are shown in Table 10 below. .

TABLE 9

TABLE 10

On the other hand, the water resistance test results for the coating film (Cera-Wall, product name of the paint developed according to the present invention) are as follows.

Drying test at 150 ℃ was good without peeling and blistering of the film in 240 hours test, but swelling and peeling did not occur in the natural drying (approx. 2 days), but the hardness of the coating was slightly decreased. In the acid resistance test, good results were obtained.

As a result of coating appearance test on Cera-Wall specimen coating and adhesion test on Cross Cut 100/100, the coating appearance of aluminum sheet and galvanized steel sheet was also good, and PS-P100 and water were coated to have smooth surface. It is possible to use diluted before coating, but the adhesive force is lowered due to the increase of hardness. The results of the adhesion test on the cross cut were not abnormal.

Claims (7)

A non-flammable coating composition comprising 30 wt% of leadstone, comprising a binder, a pigment, and an additive,
The feldspar has a particle size of 20 to 25㎛, SiO ₂ is contained in 76.01% by weight, Al ₂ O ₃ is contained in 18.4% by weight non-flammable coating composition.
delete The method of claim 1,
The binder is 45 to 60% by weight, characterized in that the pigment is 40 to 55% by weight, incombustible coating composition.
The method of claim 1,
The binder includes a first binder and a second binder;
The pigment is a first pigment and a second pigment; And
The additive is a first additive and a second additive; characterized in that, incombustible coating composition.
delete delete delete

Images