KR101113463B1 - The method of preparing fire resistance-paints of inorganic material melting in water and it's composition - Google Patents

Abstract

The present invention relates to a method for preparing an inorganic water-soluble refractory paint and a composition thereof, wherein distilled water is added to an alkali silicate powder and heat-treated at high pressure and high temperature to obtain an aqueous solution of a colloidal alkali silicate. To obtain a mixed colloidal solution by adding a homogenous dispersion obtained by homogenizing with addition of titanium oxide, polyhydric alcohol, boric acid, dispersing agent, and silane binder, hot mixed foaming mineral powder, hollow glass bead fine particle mineral functional ingredient, The present invention relates to a method for preparing an inorganic water-soluble refractory paint obtained by adding a mineral functional ingredient powder to obtain a basic paint composition and adjusting pH and viscosity thereof.

Description

The method of preparing fire resistance-paints of inorganic material melting in water and it's composition

The present invention relates to a method for preparing an inorganic water-soluble refractory paint and a composition thereof. Specifically, distilled water is added to an alkali silicate powder, followed by heat treatment at high pressure and high temperature to obtain an aqueous solution of a colloidal alkali silicate, and an inorganic foaming agent in ion-exchanged water separately from the silicate solution. And adding a colloidal dispersion obtained by homogenizing by adding a foaming aid, titanium oxide, polyhydric alcohol, boric acid, a dispersant, and a silane-based binder, to obtain a mixed colloidal solution, and then to the mixed colloidal liquid, a high-temperature foamable mineral powder, and hollow glass bead fine particle minerals. The present invention relates to a method for preparing an inorganic water-soluble refractory paint obtained by adding a functional ingredient powder and a mineral functional ingredient powder to obtain a basic paint composition and adjusting pH and viscosity thereof.

In view of the fire resistant paints from two viewpoints, one is a paint which is not easily ignited by the coating of the paint when heat or flame is applied, and the paint is not fired easily by high heat or flame as in the present invention. It can be classified as fire-resistant paint that has the function of preventing the rupture of concrete due to explosion by blocking heat to concrete pillars, beams and walls by the heat insulation layer of .

Refractory paint used in the former case is a vehicle (vehicle), a flame retardant for synthetic resin-based plastics and organic solvents, or the addition of inorganic mineral powder to the paint is a fire retardant paint that has increased the flame resistance. have.

Such paint can withstand up to about 300 ° C but melts and decomposes in the process leading to 400 ° C and is carbonized at the end, leaving only residue.

Among such synthetic resin paints, fluorine resins or silicone resins containing non-flammable mineral powders are excellent in flame retardancy and can withstand temperatures up to 500-600 ° C., but not at higher temperatures.

The latter heat-resistant paint to be tried in the present invention is a high-strength concrete of 50Mpa or more in the construction work in accordance with the fire performance management standards of high-strength concrete columns and beams (Ministry of Land, Transport and Maritime Affairs notice 2008-33, 08.02.21.) When used, it is required a fire-resistant to withstand 3 hours at 1,110 ℃ fireproof heating conditions.

For this purpose, high-strength concrete applied to high-rise buildings cannot explode internal steam or decomposed gas when a fire breaks out, causing an explosion in a moment, causing the concrete to rupture and collapse of high-rise buildings. do.

In order to prevent this phenomenon, synthetic resin reinforcements for concrete reinforcement have been released and used. And examples of Korean Patent Publication No. 10-791360 and Korean Patent Publication No. 10-905649. These are small bands of synthetic resin, which provide the passage of gas generated in concrete columns, beams, walls, floors, etc. by melting the synthetic resin band reinforcement due to heat during a fire, as a means of preventing explosion by the high-pressure gas generated in the concrete itself. Used.

Such concrete reinforcement is helpful in preventing the explosion, but there is no function to block the heat, the concrete is greatly damaged by the heat deterioration.

In addition, there is a method of attaching a non-combustible fireproof board to concrete to protect concrete in case of fire, but it takes up a large space, costs a lot of materials, and is difficult to process. There is a large installation cost.

In addition, a paint for preventing the rupture or explosion of concrete together with thermal barriers to concrete as a fire-resistant paint as in the present invention is introduced as a "manufacturing method and composition of eco-friendly functional flame retardant paint" in Korea Patent Registration No. 10-902449 It is becoming.

In other words, by mixing 15 parts by weight of ion-exchanged water with 5 parts by weight of polyhydric alcohol and stirring the solution slowly, stirring 3-3 parts by weight of titanium oxide, 10 parts by weight of borax and 0.5 parts by weight of a dispersant were stirred to obtain a mixed homogeneous material. 40 parts by weight of an inorganic binder, 22.5 parts by weight of sericite powder, 22.5 parts by weight of tourmaline powder, and 3 parts by weight of an amino-based silica springing agent were added to the mixture to form a basic composition of the paint. After cutting, it can be referred to as a manufacturing method and composition thereof of eco-friendly functional paints in which viscosity is adjusted by adding 1 to 4 parts by weight of the middle agent.

As a result of constructing through many tests with the above paints, as a result, as shown in Example (2) of the prior art, the fire resistance was blackened at about 1000 degrees, and thus the fire resistance management of the high-strength column and beam established by the Ministry of Land, Transport and Maritime Affairs mentioned above. It could not reach the standard and the weak binding force with concrete remained a defect.

The purpose of the present invention is the fire resistance performance management standard of high-strength concrete columns and beams enacted by the Ministry of Land, Transport and Maritime Affairs (notified by the Ministry of Land, Transport and Maritime Affairs, dated July 21, 2008: when the high-strength concrete of 50Mpa or more is used for construction work, the fire resistance heating conditions are 1.110. It has a fire resistance that can withstand 3 hours at ℃.) To increase the fire resistance and to improve the bonding strength with concrete, and in parallel with the use of inorganic materials to exclude pollutants and our living space To provide an environmentally friendly inorganic water-soluble refractory paint to ensure a beneficial and comfortable space.

In addition to high temperature foaming inorganic powders, inorganic foaming agents and foaming aids, and silane-based binders having excellent initial adhesive strength, the inorganic compounds are added to the composition by adding various additives to a binder having a silicate compound aqueous solution as a colorant. The foaming agent generates gas at each decomposition temperature to form pores with continuous bubbles, thus forming a heat-resistant insulating layer, which further improves the fire resistance of the coating layer and selects Jang Ho Stone powder having both far-infrared radiation function and anion generation function. Therefore, it is possible to reduce the content of mineral powder to reduce the adhesiveness, and to improve the adhesion to concrete during construction by introducing a methacrylate silane system that increases the initial adhesive strength when painting as a binder to facilitate the painting construction The whole composition is inorganic composition It is it is possible to achieve a manufacturing hameuroseo object of the present invention the inorganic water-soluble fire-resistant coating which may not harm the human body always maintained comfortable indoor living space.

Fire-resistant paint according to the present invention is a paint that satisfies the fire resistance management standards of the high-strength concrete columns and beams established by the Ministry of Land, Transport and Maritime Affairs (Notice No. 2008-33 of the Ministry of Land, Transport and Maritime Affairs). Not to mention the ignition by ignition when constructing concrete, but it prevents the collapse of high-rise buildings in case of fire, and almost all of the composition including the colorant is made of inorganic material, which is harmless to human body and furthermore, it has far-infrared radiation function and anion generating function, Antibacterial, deodorant, etc. are beneficial and hygienic to the human body, so it is a fireproof paint that can keep our living space comfortably at all times.

The present application provides a method for preparing inorganic water-soluble fire retardant paint which has been improved and improved the problems of the prior art related to the manufacturing method and composition of the environment-friendly functional flame retardant paint published in the domestic patent application (Registration No. 10-911147), The present invention relates to a coating composition obtained by adding various additives to an aqueous alkali silicate solution as a colorant, and adding a silane containing methacrylate group having excellent initial strength as a foaming mineral powder, an inorganic foaming agent and a foaming aid, and a binder. It has come to this, if the manufacturing method of the present invention specifically describes by process,

A one-step process for preparing an aqueous alkaline bacterium solution by adding 250 parts by weight of distilled water to 100 parts by weight of alkali silicate and maintaining the temperature at a temperature of 110 to 125 ° C. under a pressure of 3000 Torr to 3500 Torr;

12 parts by weight of inorganic foaming agent, 3 parts by weight of foaming aid, 30 parts by weight of titanium oxide, 40 parts by weight of polyhydric alcohol, 60 parts by weight of borax, 10 parts by weight of dispersant, and 50 parts by weight of silane-based binder Two-step process of obtaining homogenized colloidal dispersion,

3-step process of obtaining a mixed colloidal solution by adding a colloidal dispersion of two stages to an aqueous alkali silicate solution of one stage,

Four-step process of obtaining the basic composition of paint by adding 150 parts by weight of high-temperature foamable mineral powder, 80 parts by weight of hollow glass bead fine particles, and 100 parts by weight of mineral functional ingredient powder to the mixed mixture in three steps,

5-step process to adjust pH 7 ~ 8 range with weak acid of paint basic composition,

It can be said to be a method for producing an inorganic water-soluble refractory paint comprising a six-step process of adjusting the viscosity in the range of 4-8 with a viscosity modifier.

Alkali silicates in the method of manufacturing the refractory paints are sodium silicate, sodium silicate, sodium metasilicate anhydwus, sodium sesguisilcate, sodium ortosilicate, and gary silicate. One or more alkali fungal salts may be used. Silicate aqueous solution acts as a colorant of the refractory paint and at the same time has the function of a binder that can bind different compositions.

As the inorganic blowing agent, sodium bicarbonate (NaH CO ₃ ), ammonium carbonate, and sodium acetate can be used. Here, ammonium carbonate has a function of generating a gas by sublimation at 60 ° C. or higher. When it starts to decompose at 270 ° C. and releases CO ₂ and is exposed to high heat, continuous pores are formed in the coating with softening of the coating.

In addition, as the foaming aid, zinc, calcium, and the like of the fatty acid may be used as the foaming aid. Such a foaming aid is a non-flammable foaming aid of an inorganic foaming agent and performs a function of foaming aid even at a high temperature unlike an organic foaming aid.

In addition, by using a silane binder having a methacrylate acrylate group having excellent initial adhesive strength and an epoxy-containing alkoxy silane system having excellent late adhesive strength as a silane binder, the coating construction can be smoothly performed while improving the bonding strength between the concrete and the refractory paint. All. The silane system can greatly improve the strength of the coating film by greatly improving the adhesive bonding force between the organic materials and inorganic materials such as metal, glass, sand, and inorganic materials, and by making the coating structure tighter, Excellent and waterproof.

Mineral powders that have a foaming function at high temperatures include vermiculite and pearlite obsidian. These mineral powders are foamed at a temperature of 800 ° C to 1100 ° C and produce numerous continuous bubbles in the range of 10 to 60 microns along with the gas generated in them. It has high thermal insulation along with porous glass bead particles, which can protect the columns, beams and walls of the concrete by blocking the heat from the high temperature heat.

In addition, Jang Ho-seok powder has far-infrared radiation function, anion generating function, deodorant, and antibacterial property, which is beneficial and hygienic to human body, so we can keep our living space in a pleasant atmosphere.

The functional characteristics of Jang Ho-seok powder are as follows.

Table (1). Far-infrared emissivity test results of Jang Ho-seok fine powder.

Test Items Test result Test Methods Far infrared ray emission amount
(40 ℃) Emissivity (5 ~ 20㎛) 0.919
KICM-FIR-1005 Radiation energy (W / ㎡) 3.71 × 10 ²

(Remarks) This test result is a black body contrast measurement using FT-IR spectrometer. (Korea Institute of Construction Materials)

Table (2). Test result of deodorant effect of Jang Ho-seok powder.

Test Items Elapsed time Blank concentration (ppm) Sample concentration (ppm) Deodorization rate (%)
Deodorization test
(Ammonia Gas) 30 493 50 89.9 60 414 40 90.3 90 360 25 93.1 120 312 16 94.0

※ The above test report is the test report conducted by the Professor's Research Laboratory, School of Basic Science, Gyeongsang National University.

Table (3). Antimicrobial test test results of Jang Ho-seok powder.

Test Items Test result
Test Methods Initial concentration
(CFU / 40p) Concentration after 24 hours
(CFU / 40p) Bacterial reduction rate
(%) Antibacterial test by E. coli BLANK 411 2830 -
KICM-FIR-
1002 Rock (Chrysanthemum) 411 112 72.7 Antibacterial test by Pseudomonas aeruginosa BLANK 428 2898 - Rock (Chrysanthemum) 428 196 54.2

※ Korea Institute of Construction Materials Test Results.

※ Use strain

   Eschericichia coli ATCC 25922

   Pseudomonas aeruginosa ATCC 15442

In addition, since the above-described soda silicates are somewhat dissolved by polyhydric alcohols, they give viscosity and flexibility to the coating film, thereby preventing cracks caused by dry shrinkage of the coating film. Potassium silicate, which is a silicate silicate, is not dissolved in polyhydric alcohol at all. Although it does not have the same function, it is possible to shorten the curing solidification time of the coating during construction, which has the effect of shortening the air.

The polyhydric alcohol used in the present invention uses a polyhydric alcohol such as glycerin, furopylen glycol, 1.3 butylene glycol, sorbitol, and the polyhydric alcohol has an emulsification preventing function to help maintain homogeneity of the paint.

In addition, the rutile titanium oxide blocks the color exhibited by various compositions and acts to homogenize the color.

* The method of preparing the inorganic water-soluble refractory paint is summarized in Table (4).

Table (4) Basic composition and composition ratio of the present invention inorganic water-soluble refractory paint.

Composition Specific composition Composition ratio (part by weight) Distilled water 250 to 300 parts by weight Alkali silicate At least one silicate selected from sodium silicate, sodium metasilicate, anhydride sodium sesquisilicate, sodium orthosilicate.
100 parts by weight Ion exchange water 160 parts by weight Inorganic foam At least one silicate selected from among sodium bicarbonate, ammonium carbonate and sodium acetate. 12 parts by weight Foaming aid At least one foaming aid selected from fatty acid zinc and calcium. 3 parts by weight Titanium oxide Rutile Titanium Oxide 30 parts by weight Polyhydric alcohol At least one polyhydric alcohol selected from glycerin, furopylen glycol, 1.3 butylene glycol, and sorbitol. 40 parts by weight borax 60 parts by weight Dispersant At least one dispersant selected from alkylbenzene sulfonates, polyethylene glycols, surfactants, water-soluble polymers. 10 parts by weight Silane binder It uses together with 30 weight part of silane systems which have a methacrylate group, and 20 weight part of alkoxy silane systems containing an epoxy. 50 parts by weight High temperature foamability
Mineral powder One or more mineral powders selected from vermiculite, pearlite and obsidian 150 parts by weight Hollow Glass Bead Microparticles 70 parts by weight Functional ingredient Jang Hoseok Powder 100 parts by weight

As shown in Table 4, the weight ratio between the liquid substance and the solid substance of the entire composition is very important. In terms of the composition ratio of the total composition, the liquid substance is 450-500 parts by weight of distilled water and ion-exchange water polyhydric alcohol, the remaining solids is 595 parts by weight, the liquid material is about 45 wt%, and the bridge is about 55 wt%. . This greatly affects the viscosity of the paint, the higher the ratio of solids, the worse the painting workability, the surface after coating is not smooth and causes cracks, and when the ratio of the liquid material increases, the curing solidification time of the coating becomes slow.

More important is the amount of inorganic foaming agent used. Increasing the amount of inorganic foaming agent, as described above, it is impossible to obtain pores in the range of 10 to 60 microns, and when the pores become larger, the thermal barrier property is lowered. Inefficient

The other important thing is the use of a small amount of silane-based binder (adhesive), which is not adhered to the concrete, and the workability is deteriorated. When a large amount is used, it is expensive, which leads to a cost increase and thus the competitiveness is low.

3 hours fire resistance of Article 4 of the Ministry of Land, Transport and Maritime Affairs No. 2008-33 (notified by July 22, 2008) as a test result of requesting a fire resistance test to the Disaster Prevention Testing Institute dated November 2, 2009 to measure the effect of the refractory coating according to the composition. The test report as shown in Table (5) which satisfies the above was obtained.

Table (5). Test report

Claims (6)

250-300 parts by weight of distilled water and 100 parts by weight of alkali silicate in an airtight container, followed by a one-step process of producing an aqueous solution of alkali silicate by heat treatment at a pressure of 3000 to 3500 Torr and a temperature of 110 to 125 ° C. 12 parts by weight of inorganic foaming agent, 3 parts by weight of foaming aid, 30 parts by weight of titanium oxide, 40 parts by weight of polyhydric alcohol, 60 parts by weight of borax, 10 parts by weight of dispersant, and 50 parts by weight of silane-based binder Two-step process of obtaining homogenized colloidal dispersion, A three-step process of obtaining a mixed colloidal solution by adding a colloidal dispersion of two stages to an aqueous alkali silicate solution of one stage, Four-step process of obtaining the basic composition of paint by adding 150 parts by weight of high-temperature foamable mineral powder, 80 parts by weight of hollow glass bead fine particles, and 100 parts by weight of mineral functional ingredient powder to the mixed mixture in three steps, 5-step process to adjust pH 7 ~ 8 range with weak acid of paint basic composition, Method for producing an inorganic water-soluble refractory paint consisting of a six-step process to adjust the viscosity in the range of 4 ~ 8 poise with a viscosity modifier. The method according to claim 1, wherein the inorganic blowing agent is one inorganic foaming agent selected from sodium bicarbonate, ammonium carbonate and azodansoda. The method according to claim 1, wherein the foaming aid is at least one foaming aid selected from fatty acid zinc, fatty acid kalsum and the like. The method of claim 1, wherein the silane binder is a mixture of 30 parts by weight of a silane system having a methacrylate group and 20 parts by weight of an alkoxysilane system containing an epoxy. The method of claim 1, wherein the high temperature foamable mineral powder is at least one high temperature foamable mineral powder selected from vermiculite, pearlite, and obsidian. The composition of claim 1, wherein the composition ratio of the paint base composition is 250 to 300 parts by weight of distilled water, 100 parts by weight of alkali silicate, 160 parts by weight of ion-exchanged water, 12 parts by weight of inorganic blowing agent, 2 parts by weight of foaming tank, and 30 parts by weight of titanium oxide. , 40 parts by weight of polyalcohol, 60 parts by weight of borax, 10 parts by weight of dispersant, 50 parts by weight of silane binder, 150 parts by weight of high-temperature foaming mineral powder, 80 parts by weight of hollow glass bead fine particles, 100 parts by weight of functional ingredient powder (jangho stone) A method for producing an inorganic water-soluble refractory paint.