KR100911147B1 - The method of preparing protective paint against flame having a functional character of close enviroment and it's composition - Google Patents

Abstract

A method for preparing environment-friendly functional fireproof paint is provided to maximize fire retardancy and flame resistance of paint, and to impart bioactive function to paint by using nature mineral powder and additive which is harmless to the human body. A method for preparing environment-friendly functional fireproof paint comprises the steps of: mixing ion exchanged water 15 parts by weight and polyhydric alcohol 5 parts by weight, and stirring the mixture to obtain the solution; adding rutile type titanium oxide 5.5Œ2.5 parts by weight, borax 10 parts by weight and a dispersing agent 0.5 parts by weight in the solution to obtain the homogeneous mixture; adding inorganic binder 40 parts by weight, sericite powder 22.5 parts by weight, tourmaline powder 22.5 parts by weight, and amino-based silane coupling agent 3 parts by weight to obtain a basic composition of paint; controlling the basic composition to pH 7 by using 1.1Œ0.9 parts by weight of a pH adjusting agent; and adding 2.5Œ1.5 parts by weight of a thickener to the resultant to control viscosity.

Description

The manufacturing method of eco-friendly functional flame retardant paint {THE METHOD OF PREPARING PROTECTIVE PAINT AGAINST FLAME HAVING A FUNCTIONAL CHARACTER OF CLOSE ENVIROMENT AND IT'S COMPOSITION}

The present invention relates to a method for producing an environmentally friendly functional flame retardant paint. Specifically, distilled water is added to a powder mixed with sodium silicate and potassium silicate to prepare an inorganic binder in solution form by heating under high pressure, and separately ion-exchanged water and polyhydric alcohol. After mixing and slowly stirring, the inorganic binder, the natural mineral powder, and the binder were added to the dispersion in which the dispersant, titanium oxide, and the flame retardant were sufficiently dispersed to obtain a paint basic composition, and after adjusting the pH of the paint basic composition, a thickener was added thereto. It relates to a method and a composition for producing an environmentally friendly functional flame retardant coating by adjusting the viscosity of the input.

Recently, various painting materials and interior decoration materials are used to decorate offices and residential spaces. As a coating material, most of the synthetic resin paints have been widely used because of its ease of workability, surface smoothness, coating properties, stain resistance and waterproofness, and the interior decoration material itself is synthetic resin, printed on other materials, or laminated synthetic resin veneer sheet. The resin materials are used, in part or in whole, by painting or painting.

Particularly, synthetic resins are made of synthetic resins in solution, so they use a solvent, and plasticizers and stabilizers are added, and thus they are exposed to harmful substances such as VOC (Volatile Organic Compounds), carcinogens and heavy metals. As a result, the government has recently tightened regulations on interior decoration materials, and people are more aware of pollution-producing materials. Therefore, environmentally friendly interior materials are preferred, and fires, which are frequently occurring in reading rooms and test houses, are also used recently. Sound insulation or thermal insulation materials or interior materials can be referred to as the undesired occurrence caused by using the synthetic resin material as described above.

In order to solve the above problems, the development of interior materials for the field is spurred, and interior materials including researched and developed paints are released or various conventional technologies are introduced, but there are still many products for development.

① As one of the prior arts, a transparent flame retardant paint composition is published in a domestic registered patent publication (registration number 495159). As for the technical content, 18 ~ 36% by weight of chlorinated rubber resin, 7 ~ 14% by weight of waste phenol, 0 ~ 20% by weight of vinyl copolymer resin, 0.5 ~ 1.0% by weight of liquid paraffin chloride stabilizer and 40 ~ 50 organic solvent. It relates to a transparent flame retardant paint containing a weight percent.

Such paints can delay the spread of fire by blocking heat and flames by forming a thermal insulation layer by forming a thermal insulation layer by forming a thermal insulation layer of the flame retardant paint in the event of a fire, but first of all, a large amount of organic solvent is used to generate harmful VOCs. It can be said that the chlorine gas is generated from chlorinated rubber resin or vinyl resin which eventually burns in the case of fire.

② As another example of the prior art, "non-flammable panel and its manufacturing method" are introduced in the domestic registered patent publication (Registration No. 635935). By impregnating the shape paper in the flame retardant melamine resin impregnation liquid by the technical configuration and manufacturing the melamine resin shape paper by drying, the step of manufacturing the board, the lamination step of laminating the melamine resin shape paper on one side or both sides of the board, laminated lamination The present invention relates to a non-combustible panel and a method of manufacturing the same. Because of this reaction, formine is slowly eluted from the panel surface, which is harmful to the human body. In particular, recently, the tableware of melamine or urea resin is rarely used.

③ As another conventional technology, Korean Patent Application Publication No. 10-2005-52425 discloses a functional paint composition pursuing functionality. The technical composition is 40 to 80% by weight of polyurethane resin and 5 to 15% by weight of pigment. , 60-15% by weight of the main raw material composed of 5-15% by weight of polyethylene as a filler, 5-15% by weight of silicine as an additive, 5-15% by weight of a solvent mixed with toluene and xylene, and 50-70% by weight of a curing agent. , Functional paint composition by mixing 30 ~ 50 wt% of solvent and 20 ~ 40wt% of supplementary raw material. It contains a large amount of synthetic resin, so it is inferior in flame retardancy and also uses a large amount of solvent which is harmful to human body. It is not suitable for interior paints.

④ In addition, the registered patent publication (Registration No. 10-654534) has a flame retardant thermoplastic resin composition, but the composition contains a vinyl cyanide compound and a chlorine-based organic compound, which may be called flame retardant. In addition, it is not suitable as a built-in coating material because it may generate toxic gas such as chlorine. In addition, the registered patent publication (Registration No. 851835) is a flame retardant paint composition. Is used as a composition, but polyvinylacetate is used as the main material or film-forming agent, which has a very low softening point and is easily dissolved in various organic solvents, and a large amount of thermally decomposable organic compounds such as naphtha, surfactants, adhesives, and additives are used. It is hard to expect flame retardancy.

The above-mentioned prior arts can be expected to be flame retardant and flame retardant in accordance with the characteristics of each technical configuration, and can be achieved to an extent to an environmentally friendly purpose, but include harmful solvents or additives in paints and interior coating compositions, and The materials which are decomposed by high temperature and generate toxic gas are used, so it is a coating and interior coating composition which still has room for improvement.

The present invention relates to a method for producing an environmentally friendly functional paint and a composition thereof, since inorganic materials such as inorganic binders, flame retardants, natural mineral powders, titanium oxides, etc. are used at least 90wt% based on solids, to maximize flame retardancy and flame resistance, and to provide far infrared radiation and By using natural mineral powders including sericite and tourmaline and additives that are harmless to the human body as anion generators, eco-friendly functional paints can provide living spaces that are provided with beneficial physiologically active functions and create an environment-friendly atmosphere. An object of the present invention is to provide a manufacturing method and a composition thereof.

To 100 parts by weight of powder mixed at a weight ratio of sodium silicate and potassium silicate 3: 1, 150-200 parts by weight of distilled water was added and heated to 100 ° C or higher under high pressure to prepare a solution-type inorganic binder, and separately polyhydric alcohol in ion-exchanged water. After mixing, gradually dispersing by adding a dispersing agent while slowly stirring, adding a titanium oxide, a flame retardant, and homogenizing sufficiently stirred, and then adding the inorganic binder to the stirring and stirring the natural mineral powder, the binder at a high speed into the paint By obtaining a basic composition and adjusting the pH to be neutral, and then adding a thickener to adjust the viscosity, it was possible to provide a method for producing an environmentally friendly functional flame retardant paint and its composition.

Eco-friendly functional flame retardant paints and compositions of the present invention are extremely flame retardant and does not contain toxic gases in the gas that is decomposed by high heat in the event of fire and does not generate volatile organic compounds (VOC) without using organic solvents. It is hygienic due to its deodorizing function and antibacterial properties, because it uses far infrared ray radiation function and natural mineral powder which is an anion generating material, and it is beneficial to human body's physiological activity. It can be referred to a method for producing a flame retardant paint and its composition.

The invention of 3 More specifically sodium silicate _{(NaO · nSiO 2 χH 2 O} ) and potassium silicate (K ₂ O · nSiO ₂₎ by the first process of the manufacturing method relates to a manufacturing method and composition of the environment-friendly functional flame retardant paint A one-step process of preparing an inorganic binder in solution form by maintaining the temperature at 105-110 ° C. at a pressure of 3 atm in a sealed container to which 150-200 parts by weight of distilled water is added to 100 parts by weight of powder mixed at a weight ratio of 1;

5 parts by weight of polyhydric alcohol is mixed with 15 parts by weight of ion-exchanged water, and then stirred slowly, stirring and dispersing by adding 5.5 parts by weight of rutile titanium oxide, 10 parts by weight of borax (Na ₂ B ₄ O ₇ ) as a flame retardant, and 0.5 parts by weight of a dispersant. Two-step process to obtain a mixed homogenate by

A three step process of forming the basic composition of the paint by adding 40 parts by weight of the inorganic binder prepared in the step 1 process, 45 parts by weight of the mineral powder, and 3 parts by weight of the binder to the mixed homogeneous material of the two step process,

Four-step process to adjust the pH to neutral by using 1.1 ± 0.9 parts by weight of pH adjuster in the basic composition of the paint,

Addition of 2.5 ± 1.5 parts by weight of thickener to the paint base composition adjusted pH, it is a manufacturing method of eco-friendly functional flame retardant paint comprising a five-step process for adjusting the viscosity.

In the above production method, the binder formed by dissolving sodium silicate and potassium silicate in distilled water has a function of forming a coating film with a binder action. Here, the sodium silicate is slightly dissolved by the polyhydric alcohol added in the following process, thereby giving some viscosity to the coating film and making it flexible, thereby making it possible to detect cracks caused by dry shrinkage of the coating film. On the other hand, since the potassium silicate is not dissolved in polyhydric alcohol at all, the above functions cannot be expected, but the above-mentioned functions can be appropriately controlled by mixing the two by shortening the curing solidification time of the coating. Of course, the viscosity of the binder liquid varies depending on the amount of distilled water added, but the mixing amount of the distilled water in terms of drying time of the coating film, strength of the coating film, and even after cracking may be considered as an appropriate blending ratio.

In addition, the polyhydric alcohol in the two-step process, as described above, gives the paint coating flexibility by viscosity, but has a slight solubility to the flame retardant borax, which helps in the flame retardant homogenization of the coating composition. In addition, as a flame retardant borax is an anhydride borax, melting point of 741 ℃ can be said to be a non-toxic material.

Titanium oxide is a white powder and a material commonly used as a white pigment of paint. The shielding power is the largest among white pigments, and the titanium oxide used herein is a rutile titanium oxide.

As the dispersant, one dispersant selected from alkylbenzene sulfonates, polyethylene glycol nonionic surfactants, and water-soluble polymers is used.

As the mineral powder, sericite and tourmaline powder are used in the same amount, respectively, where sericite is white as a mica, and the chemical composition is Kx (Al, Fe ", F"', Mg) Y, (Si, Al) ₄ · O ₁₀ (OH) ₂ · H ₂ O, a mineral showing X = 1 to 0.5 and y = 2, and is excellent in far-infrared radiation function. Tourmaline is black, blue, red, green, purple and white.The chemical composition is (Na, Ca) (Mg, Fe ⁺² , Li) ₃ (Al, Fe ⁺³ , Mn, Cr, Ti ) ₆ (B ₃ Si ₆ O ₂₇ ) · (O, OH, F) _{4 It} has excellent anion generating function and is a mineral with excellent wear resistance with a hardness of 7 ~ 7.5. In addition, the tourmaline has a variety of colors as described above, it is possible to express the color of the desired subtle colored paints by adjusting the amount of white titanium oxide even without using a separate colored pigment.

In addition, as the binder used in step 3, aminopropye triethoxy silan or amino propyl methyldimethoxy silan is used as the amino-silane silane springing agent. Such capping agent is a cuffing agent that combines organic materials and inorganic materials (metal, glass, sand, etc.), and has excellent adhesive bonding power, which significantly improves the strength of the coating film and makes the structure of the coating film dense, thereby protecting the coating object. It is excellent and also waterproof.

In addition, the pH adjusting agent uses weak acid except strong acid, and the coating composition of the present invention is mostly sodium silicate and potassium silicate, borax, amino-based silane coupling agent, and most of them have alkalinity. It is essential to adjust pH7 to weak acid using mild acid.

Other important agents include organic solvents, oil-based dispersions such as hydroxyethyl cellulose, hydroxyfurophyll cellulose, and polyethylene oxide, and the addition of such intermediates prevents sedimentation, flow prevention and protection. It acts as a colloid to prevent sedimentation, elongation of coating, etc., and it is water-dispersive system, so it does not generate VOC and does not generate odor, so it is harmless to human body.

Eco-friendly functional flame retardant paint composition according to the above manufacturing method is 40 parts by weight of inorganic binder, 45 parts by weight of natural mineral powder, 15 parts by weight of ion-exchanged water, 10 parts by weight of borax, 5 parts by weight of polyhydric alcohol, 5.5 ± 2.5 parts by weight of titanium oxide, 3 parts by weight of binder, 0.5 parts by weight of dispersant, 1.1 ± 0.9 parts by weight of pH regulator, 2.5 ± 1.5 parts by weight of thickening agent can be referred to as an environmentally friendly functional flame retardant composition.

The composition is characterized by using inorganic binder, natural mineral powder, titanium oxide, flame retardant inorganic components close to 90% of flame retardancy and excellent flame retardancy, even if the discoloration of the coating film up to 1000 ℃, does not break the coating film or generate a flame It does not use VOC (Volatile Organic Compounds) and does not contain toxic gas because it does not use solvents as the main raw material paints, especially sericite with excellent far-infrared emissivity and tourmaline with high anion generation rate Method of producing eco-friendly functional flame retardant paint that can provide a living space that maintains a pleasant atmosphere because it is hygienic and beneficial for physiological activity as well as improving flame retardancy by using natural mineral powder contained in a large amount. The composition may be referred to.

In order to find out the function and effect of the eco-friendly functional flame retardant paint according to the present invention will be given an embodiment.

Example (1)

Sodium silicate 75kg, potassium silicate 25kg and distilled water 180kg were put in a pressure-controlled airtight container, and an inorganic binder was prepared by treating the mixture at a pressure of 3 atm and a temperature of 105 to 110 ° C. for 1 hour.

Separately, 4 kg of titanium oxide, 10 kg of borax, and 0.5 kg of dispersant were added and stirred to disperse and slowly dissolve 15 kg of ion-exchanged water with 5 kg of furypyrene glycol and obtain a homogeneous mixture. The solution-type inorganic binder 40 kg and sericite powder 22.5 Kg, 22.5 kg of white tourmaline powder, and 3 kg of aminofurophylltriethoxysilane were added and stirred until homogenized to obtain a paint basic composition. 1.5 kg of acetic acid was added to the basic composition of the alkaline paint to pH7, and the viscosity was adjusted to 3 kg of ethyl cellulose to prepare a white, environmentally friendly functional flame retardant paint.

In order to find out the physical properties, functions, and the state of heat of the paint prepared in Example (1), the paint prepared in Example (1) was painted on a 30 cm × 50 cm × 30 mm iron plate.

Example (2)

After 48 hours, when the film was completely cured, the average adhesive strength with the iron plate was 47 kg / cm ² , and the surface hardness and the collecting hardness were 4.3.

In addition, the far-infrared emissivity emitted from the coating layer was 0.91, and the anion generation amount was measured using an anion generator to show 860 ion / cc.

In addition, the coating sample was placed in an electric furnace equipped with a see-through window in order to determine the change of heat, and as a result, the temperature was increased at an elevated rate of 50 ° C. per minute. When the temperature of the furnace surface is slightly changed and the color of the paint surface is slightly changed as the temperature reaches 700 ℃, the air flow in the furnace is also darkened, and the temperature is increased as the temperature increases, and the paint surface reaches the temperature of 1050 ℃. It was blackened and the rouge was no longer changed.

The temperature was further raised to raise the temperature to 1350 ° C. and stopped. The sample was taken out and cooled to examine the condition. As a result, the structure of the coating layer, the coating layer and the iron plate were fused, and the coating layer remained in the form of fine irregularities.

Claims (3)

5 parts by weight of polyhydric alcohol was mixed with 15 parts by weight of ion-exchanged water and 5.5 ± 2.5 parts by weight of rutile titanium oxide, 10 parts by weight of borax and 0.5 parts by weight of a dispersant were added to the dissolved solution to stir a mixed homogeneous substance. 40 parts by weight of binder, 22.5 parts by weight of sericite powder, 22.5 parts by weight of tourmaline powder, 3 parts by weight of amino-based silane capping agent were added and stirred to form a basic composition of the paint, and then adjusted to pH 7 using a pH adjuster of 1.1 ± 0.9 parts by weight. 2.5 ± 1.5 parts by weight of thickener manufacturing method of eco-friendly functional flame retardant paint, characterized in that the addition viscosity is adjusted. The method of claim 1, wherein the inorganic binder is added to 150 parts by weight of distilled water to 100 parts by weight of the powder mixed with sodium silicate and potassium silicate in a weight ratio of 3: 1 to put in a sealed container and the pressure in the container at 3 atm, temperature 105 ~ Method for producing an environmentally friendly functional flame retardant paint, characterized in that the inorganic binder in solution form by maintaining at 110 ℃. 45 parts by weight of natural mineral powder consisting of 40 parts by weight of inorganic binder, 22.5 parts by weight of sericite powder and 22.5 parts by weight of tourmaline powder, 15 parts by weight of ion-exchanged water, 10 parts by weight of borax, 5 parts by weight of polyalcohol, rutile titanium oxide 5.5 ± Eco-friendly functional flame-retardant coating composition is composed of 2.5 parts by weight, amino acid coupling agent 3 parts by weight, dispersant 0.5 parts by weight, pH adjuster 1.1 ± 0.9 parts by weight, thickener 2.5 ± 1.5 parts by weight.