KR102014884B1 - a composition of paint for fire-resisting - Google Patents

Abstract

Magnesium carbonate, which is an inorganic flame retardant and suppresses smoke generation with an aqueous binder, is 26.95 to 30.93 wt%, and a resin coating material composed of vinyl acetate, which is a flame-retardant aqueous binder and improves adsorption power to the drawing. , 5 to 35,93% by weight, 4.55 to 8.43% by weight of aluminum hydroxide powder which suppresses flame propagation and delays smoke generation as inorganic flame retardant, 0.10% by weight of dispersant having excellent dispersibility, and bubbles It relates to a composition consisting of mixing 0.07% by weight of antifoaming agent and mixing 32.4% by weight of water at a temperature of 5-40 ° C. at a speed of 700 ± 100 for 40-50 minutes.

Description

A composition of paint for fire-resisting

The present invention relates to a composition of a fire-retardant coating coating on ships, etc., which is an inorganic flame retardant and 26.95 to 30.93 wt% of magnesium carbonate that suppresses the generation of smoke with an aqueous binder, and an aqueous flame retardant and a flame retardant 28.5 to 35.93% by weight of resin coating material composed of vinyl acetate to improve adsorption power, 4.55 to 8.43% by weight of aluminum hydroxide powder, which inhibits flame propagation and delays smoke generation as inorganic flame retardant, and powder The present invention relates to a composition comprising 0.10 wt% of an excellent acid dispersant and 0.07 wt% of an antifoaming agent that suppresses bubbles, but mixes 32.4 wt% of water at 5-40 ° C. and mixes the mixture at a rotational speed of 700 ± 100.

In general, small fishing boats are composed of FRP (fiber reinforced plstics) made of materials with excellent corrosion resistance and formability, and most of the unmanned engine rooms are operated when operating small vessels. There are many combustible materials, and in particular, the paint covering the engine room is often oily, so there is a problem of causing a great damage by fire.

In view of the conventional fire-resistant paints from two viewpoints, one has a paint which does not easily ignite when heat or flame is applied, and heats by the insulating layer coating of the paint in case of fire without being easily ignited by high heat or flame. It can be classified as fire-resistant paint that does not explode by blocking gas so that it is not easily generated by high heat.

Refractory paints used in the former case are most commonly used as flame retardants (vehicles), which are flame retardant materials for synthetic resin plastics and organic solvents, or fire retardant paints that have added flame retardant properties by adding inorganic mineral powder to these paints. can do.

Such a paint has a problem in that the paint is decomposed and carbonized at a high temperature of 400 ° C. or higher to raise a fire.

The present invention has been proposed for the purpose of improving the above problems.

An object of the present invention is to block the transition of the flame to prevent the initial fire spread.

The paint composed of the composition according to the present invention has an object of constituting minimization of toxic gas by constructing strong adhesiveness, excellent strength and excellent incombustibility.

Magnesium carbonate, which is a component of the composition according to the present invention, is present in a combined state of carbonate and magnesium, or silicate and magnesium, and is composed of a compound to increase the carbonate or magnesium ratio when mixed, and the effect of thermal insulation and metal coating The effect can be enhanced.

As described above, the magnesium carbonate according to the present invention is used as a component of the composition as an inorganic flame retardant and used as a function to prevent flame propagation in case of fire. It is easy to mix with water, prevents the corrosion of gas, and can be applied as a function to prevent the generation of smoke in the fire. Also, the melting point of magnesium is 650. By the effect it can implement the operation and effect of the present invention through the function to prevent the initial flame propagation in the fire.

Vinyl Acetate, which is a component of the composition according to the present invention, is composed of a component of a flame-retardant aqueous binder, and is a compound used as a raw material of vinyl acetate resin, and when used as a paint, it has a function of improving adhesion of the drawing. .

Particularly, when mixed with ethylene, heavy and hard materials can be formed according to the mixing ratio, and the foaming property and adhesive force can be controlled in a liquid state.

Aluminum hydroxide, which is a component of the composition according to the present invention, may be referred to as an aluminum salt, and when used as a paint as an inorganic flame retardant, it is composed of a function of suppressing flame propagation during flame.

The aluminum salt is easy to mix with water and has a property of protecting the coated surface when used in the paint, it is configured to prevent the spread of the flame on the coated surface in the event of fire in the initial disaster prevention.

The dispersant according to the present invention is aqueous and is composed of a function capable of dispersing and mixing each component when each component is uniformly mixed at room temperature (5 to 40 ° C.), and when mixing with each component of the composition There is a feature that is also used as a surfactant to facilitate the surface activity of.

It is a substance added to prevent the aggregation of the microparticles as described above when constituting the small particles and the clade particles, and the dispersant characterized as described above may use sodium silicate, sodium carbonate, sodium phosphate, the sodium silicate, Sodium carbonate and sodium phosphate may be mixed and used in a predetermined amount, and either component may be selected and used.

In the present invention, the dispersant was used by mixing sodium silicate, sodium carbonate, and sodium phosphate in a ratio of 1: 1: 1.

The antifoaming agent according to the present invention is an aqueous antifoaming agent and is composed of a function capable of suppressing bubbles in the composition of the present invention.

Antifoaming has the effect of breaking bubbles and suppressing bubbles.

As the antifoaming agent, ethyl alcohol and fatty acid ester having low volatility and high diffusivity were generally used.

As described above, the antifoaming agent used in the present invention may be used by mixing ethyl alcohol and fatty acid ester in a ratio of 1: 1, and may be used by limiting one component.

The composition according to the present invention is composed of an aqueous mixture of magnesium carbonate, vinyl acetate, hydroxide adhesive, dispersant, antifoaming agent, and water, comprising 26.95 to 30.5 weight% of magnesium carbonate, 28.5 to 35.93 weight% of vinyl acetate, and 4.55 to 8.43 aluminum hydroxide. The mixture was stirred by weight, 0.10% by weight of dispersant, and 0.07% by weight of antifoam, and 32,4% by weight of water was mixed at a temperature of 5 to 40 ° C.

The mixing ratio was based on the mixing ratio of the highest range of 35.93 wt% of vinyl acetate and the mixing ratio of the lowest range of 28.5 wt%.

The composition according to the present invention contains 33.15% to 49.25% by weight of water, 9.25% to 16.35% by weight of aluminum hydroxide, 35.25% to 41.25% by weight of magnesium carbonate, and 6.25% to 9.25% by weight of glass fiber in the mixer, and the rotation speed of the mixing vessel is 700 ±. Mix 40 to 50 minutes at 100 and mix at a temperature of 5 to 40 ℃ to form a primary mixture.

The mixing ratio of the primary mixture was based on the mixing ratio of the highest range of 49.25% by weight of water and the lowest range of 33.15% by weight.

Mix 98.95% by weight of vinyl acetate, 0.55% by weight of dispersant, and 0.50% by weight of antifoam, mix for 40-50 minutes at a speed of 700 ± 100, and mix at 5-40 ℃ for secondary mixture. Configure

74,55% by weight of the primary mixture and 25,45% by weight of the secondary mixture are mixed for 40 to 50 minutes at a speed of 700 ± 100 and mixed at a temperature of 5 to 40 ℃ to form a tertiary mixture.

The glass fibers of the primary mixture may replace gypsum.

As described above, the glass fiber of the primary mixture is intended to prevent separation from the coating even during impact by increasing the solidification and elasticity of the paint.

Limiting the weight of the water of the mixture according to the present invention is that the total weight does not change even if the mixing ratio of the mixture other than water does not change, so the water mixing ratio is limited.

The dispersing agent and the antifoaming agent which are the additives of the present invention also limited the mixing ratio.

Since the additive dispersant and the antifoaming agent according to the present invention are added in small amounts with respect to the total amount of the mixture, the change in components with respect to the total amount of the mixture is limited.

The composition according to the present invention can be easily applied by a simple tool (brush, brush, roller) according to the property of each composition, and can constitute the effect of fire prevention and flame prevention even at a thickness of 3 mm.

Since the mixing constituents are mixed in water, the flammability is low and there is an effect of delaying the spread of the flame.

In particular, in the case of the fishing boat generally applied to the present invention is a paint used for the inner wall of the engine room operated unattended, it is excellent in adhesiveness, high mechanical strength and hardly burned in the fire, so the emission of toxic gas is suppressed. Not only is it beneficial to the environment, but people on board do not inhale toxic gases, which has a beneficial effect on property, casualties, and the environment.

The present invention relates to a composition of a fire protection paint.

The present invention is 26.95 to 30.5% by weight of magnesium carbonate, 28.5 to 35.93% by weight of vinyl acetate, 4.55 to 8.43% by weight of aluminum hydroxide, 0.10% by weight of dispersant, and 0.07% by weight of antifoaming agent. Stir and mix as it is, characterized in that it is configured by mixing 32,4% by weight of water at a temperature of 5 ~ 40 ℃ mixed vessel rotation speed 700 ± 100.

Magnesium carbonate according to the present invention (MgCO ₃ ) Can be extracted naturally from magnesite, and can be decomposed into magnesium and carbon dioxide (MgO + CO ₂ ) in the laboratory and mixed to form magnesium carbonate.

 The magnesium carbonate is a mixture of magnesium and is used as an absorbent, an antacid, an insulation, an abrasive, and the like depending on the mixture.

Magnesium carbonate in the present invention is composed of a powder state and is mixed in the composition according to the present invention as a function of the absorbent and the heat insulating material.

Vinyl acetate according to the present invention is mixed with the strong adhesion function of the composition.

Aluminum hydroxide (Al (OH) ₃ ) according to the present invention is mixed in the function of the adhesive of the composition of the present invention and is composed of a powder state, to protect the coating surface of the paint from high heat and to prevent the spread of flame during combustion of the combustible material It was mixed as a function to prevent.

The dispersant according to the present invention prevents coagulation by dispersing the colloidal material of the fine particles and is composed of a function for interfacial activity of each mixture and is mixed in a powder state. The dispersant may include sodium silicate (Na ₂ SiO ₃ ), sodium carbonate (Na ₂ CO ₃ ), sodium phosphate (Na ₃ PO ₄ ), each of the mixture may be used in a ratio of 1: 1: 1, or any one type, It is configured to mix in a mixing ratio of 0.10% by weight when mixed in the composition of the present invention.

The composition magnesium carbonate, vinyl acetate, aluminum hydroxide, dispersant according to the present invention is characterized in that the mixing is evenly mixed and is composed of a water-soluble paint when mixed in a liquid by stirring with water.

Antifoaming agent according to the present invention is configured to maintain stability in the state of dissolution during mixing of each mixture and to disperse bubbles and to suppress the bubbles or to dissipate bubbles by dispersing the bubbles generated initially In addition, ethyl alcohol (C ₂ H ₆ O) is used as a function of dispersing the foam, and fatty acid ester [RCOOCH (OH)] is used as a function of inhibiting the foam, and the liquid composition is used. It is configured to mix ethyl alcohol and fatty acid esters in an amount of 0.07% by weight of the composition according to the invention.

Magnesium carbonate, vinyl acetate, aluminum hydroxide, a dispersant, and an antifoamer which are the composition of this invention comprised as mentioned above are comprised with the component which is easy to receive in water.

Water, which is a composition according to the present invention, is intended to be configured to maintain the liquid state of the mixture, and to adjust the concentration required for application.

The present invention is intended to explain the operation and effects of the present invention through examples and experiments.

Example-1

The present invention will be described through examples and experiments.

In a mixer vessel, 26.95 to 30.5 weight percent of magnesium carbonate, 28.5 to 35.93 weight percent of vinyl acetate, 4.55 to 8.43 weight percent of aluminum hydroxide, 0.10 weight percent of a dispersant, and 0.07 weight percent of an antifoaming agent were mixed in order, and then 32.4 weight percent of water was mixed. At the temperature of 5 ~ 40 ℃

The liquid is maintained by mixing for 40 to 50 minutes at a rotation speed of 700 ± 100 of the mixing vessel.

Example-2

The mixing method of each mixture in Example-2 of the present invention is a method for constructing different mixing ratios and enhancing the characteristics of each component.

The composition contains 33.15% to 49.25% by weight of water, 9.25% to 16.35% by weight of aluminum hydroxide, 35.25% to 41.25% by weight of magnesium carbonate, and 6.25% to 9.25% by weight of glass fiber in the mixer, and 5 ~ to a rotational speed of 700 ± 100 in the mixing vessel. 40 to 50 minutes of mixing at a temperature of 40 ℃ to form a primary mixture.

98.95% by weight of vinyl acetate, 0.55% by weight of a dispersant, and 0.50% by weight of an antifoaming agent are mixed in a mixing container for 40 to 50 minutes at a speed of 700 ± 100 and mixed at a temperature of 5 to 40 ° C. to form a secondary mixture. .

74.55% by weight of the primary mixture and 25.45% by weight of the secondary mixture are mixed for 40 to 50 minutes at a mixing speed of 700 ± 100 of the mixing vessel and mixed at a temperature of 5 ~ 40 ℃ to form a tertiary mixture of liquid.

The glass fibers of the primary mixture may replace gypsum.

As described above, the glass fibers of the primary mixture are intended to increase the solidification and elasticity of the paint to prevent separation from the coating even upon impact, and mixing with vinyl acetate is intended to improve adhesion.

The composition mixed with the above components can be discriminated in the function of the coating through the method of coating by adjusting the number of coating to a thin thickness in its usage.

Since the mixture as described above constitutes the paint, it can be configured by adjusting the dilution of water to facilitate the use of a brush, a roller, a disperser as an application means.

The performance of the present invention will be described in detail through experiments and comparative examples.

Experiment

Experiment of the present invention is another method used for painting in a conventional engine room

The fire state of the composition is tested in the present invention, which is the name of the coating agent and J-FRM300.

The test piece used a 2 mm thick iron plate.

The test body was coated with a trademark J-FRM300, which is a composition according to the present invention, at a thickness of 3 mm and used.

However, the shape, curing period, curing conditions, and the like of the test body were omitted, and flame propagation test, toxicity test, and smoke test were performed.

The flame propagation test was first performed under the above conditions.

1. Flame Propagation Experiment

Flame propagation test is a test in which a relatively large radiant heat is applied to the material, the propagation test according to the present invention was carried out in the following manner.

J-FRM300, a composition of the present invention, was applied to a 2 mm thick iron plate at a thickness of 3 mm, and heated on the back of the cured iron plate.

The main heat source used a heat of 50,5kw / ㎡ at a close distance of 50mm.

Other heat source conditions were ignored.

end. Examination procedure

1) .Install a calibration specimen to standardize the machine's operating condition, ignite the radiant heat and pilot flame, and verify that the chimney signal value is stable for at least 180 seconds.

2). If the signal is stable, replace the test specimen according to the present invention within 10 seconds.

3). Record the chimney signal over the entire test period and record the time when the flame tip reaches every 50 mm of the specimen, the point where the flame extinguishes, and the time at that time.

4). Three experiments are carried out under the same conditions.

As described in Table 1, the test was conducted three times under the radio wave test conditions as described above. I can see that there is.

One 2 3 Average standard Average continuous heat of combustion (MJ / ㎡ ≥1.5 Critical heat flux in fire extinguishing (KW / ㎡) 49,5 49,5 49,5 49,5 ≥20.0 Emission total calorie (MJ) 0,02 0,16 0,05 0,08 ≥0.7 Maximum Heat Dissipation (KW) 0,44 0,61 0,40 0,48 ≥4.0 Fireworks none none none none No

In the flame propagation experiment, Table 2 was conducted according to the distance between the test sample and the irradiation object.

Subject Number One 2 3 Metric lapse
time
(Minutes, seconds) Continuous combustion heat (MJ / ㎡) lapse
time
(Minutes, seconds) Continuous combustion heat (MJ / ㎡) lapse
time
(Minutes, seconds) Continuous combustion heat (MJ / ㎡) Flame Reaching Distance (mm) 50 - - - - - - 100 - - - - - - 150 - - - - - - 200 - - - - - - 250 - - - - - - 300 - - - - - - 350 - - - - - - 400 - - - - - - 450-800 - - - - - - Final flame reach distance (mm) - - - Ignition time (minutes, seconds) 02:31 01:30 01:02 Digestion time (minutes, seconds) 03:41 03:01 02:23 Test time (minutes, seconds) 10:00 10:00 10:00

※ [-] is omitted because it is not ignited.

As shown in Table 2, J-FRM300, which is the name of the composition according to the present invention, shows that there is no ignition phenomenon regardless of the distance between the test body and the low dead body, and it can be seen that there is no ignition phenomenon regardless of the ignition time. have.

2. Smoke test

Smoke experiments measure the density of smoke in the same space over time to determine how far the smoke spreads.

One). The cone heater of the smoke density tester is adjusted to the test conditions.

a. 25kw / ㎡ dose without burner flame

b. 25kw / ㎡ dose with burner flame

c. 50kw / ㎡ dose without burner flame

Maximum smoke density was measured under the same conditions as described above.

Place the specimen in the holder and mount it on the holder under the heater in the combustion chamber.

If the chamber was sealed and heated and smoke was generated, remeasurement was performed for 600 seconds if the maximum smoke density could not be measured between the first 600 seconds.

Radiation heat dosage 25kw / ㎡ 25kw / ㎡ 50kw / ㎡ Performance standard Burner flame radish U radish material Dm
Maximum smoke density


46.1

28.4

66.2
Bulkhead, interior materials, ceiling materials Less than 200 Primary deck covering 400 or less Flooring 500 or less

 As shown in Table 3, it can be seen that the density of the smoke decreases when there is a burner flame.

Therefore, it can be seen that less smoke occurs when heating the composition according to the present invention.

3. Toxicology experiment

Toxicological testing involves connecting the gas sampling line of the FT-IR with the combustion chamber of the fume tester and opening the valve of the gas sampling line when the maximum intensity of the test specimen is reached under the conditions of the fume test. To collect combustion gases.

Gas concentrations of CO, HCl, HBr, HCN, HF, SO _{2 and} NO x were analyzed when the combustion gas passed.

Radiation heat dosage 25 (KW / ㎡) 25 (KW / ㎡) 50 (KW / ㎡) Performance standard
Burner flame radish U radish CO 66,6 98.6 152,2 ≤1,450 HCN N.D N, D N, D ≤140 HCl 7,8 5,6 N, D ≤600 HBr N, D N, D N, D ≤600 HF N, D N, D N, D ≤600 NOx N, D N, D N, D ≤350 SO ₂ N, D N, D N, D ≤120

In Table 4, N and D have not been found.

As described above, the toxicity of the composition according to the present invention can be seen that the composition is far below the reference value or is not detected.

4. Performance Comparison of Compositions According to the Present Invention

One). The performance of the composition according to the present invention "J-FRM300" and other companies "GEL COAT", "NOMAL FRP" was compared.

The performance test of the composition J-FRM300 of the present invention is based on the test results of Korea Fire Institute No. 1609102.

a. Performance of Composition J-FRM300 of the Invention

Test Items
standard Test result Remarks One 2 3 4 5 Afterglow time Within 5 seconds 0,0 0,0 0,0 - - Remaining time Within 20 seconds 0,0 0,0 0,0 - - Ammunition Within 40㎠ 14,4 14,1 14,3 - - Carbonization length Within 20cm 4,4 4,4 4,4 - - Number of infections 3 or more times Not applicable

Table 5 shows the performance of J-FRM300, a composition according to the present invention.

b. Performance of other company's product "GEL COAT"

Test Items
standard
Test result Remarks One 2 3 4 5 Afterglow time Within 5 seconds Burned down Burned down Burned down - - Remaining time Within 20 seconds Burned down Burned down Burned down - - Ammunition Within 40㎠ Burned down Burned down Burned down - - Carbonization length Within 20cm Burned down Burned down Burned down - - Number of infections 3 or more times Not applicable

Table 6 is a test of the performance of the other company's product "GEL COAT" and this report is based on the test results of No. 1609104 of Korea Fire Industry and Technology Institute.

c. Performance of third party product "NOMAL FRP"

Test Items
standard
Test result Remarks One 2 3 4 5 Afterglow time Within 5 seconds 9,3 8,4 8,7 - - Remaining time Within 20 seconds 0,0 0,0 0,0 - - Ammunition 40cm2 62,8 87,3 92,8 - - Carbonization length Within 20cm 10,7 12,1 12,7 - - Number of infections 3 or more times Not applicable

Table 7 above is a performance test for a third-party product "NOMAL FRP" and the above report is based on the test report of No. 1609103 of the Korea Institute of Fire Industry and Technology.

According to the results of the experiments of "J-FRM300", "GEL COAT", and "NOMAL FRP" under the same conditions as shown in Tables 5, 6, and 7, "GEL COAT" shows the result of all the burnout. It can be seen that "NOMAL FRP" is significantly the same in all fields, only the remaining time is the same compared to the present application.

Claims (4)

delete 33.15 to 49.25% by weight of water, 9.25 to 16.35% by weight of aluminum hydroxide, 35.25 to 41.25% by weight of magnesium carbonate and 6.25 to 9.25% by weight of glass fiber were accommodated in a mixer, and the temperature was 5-40 ° C. at a speed of 700 ± 100. The primary mixture was mixed for 40 to 50 minutes, and 98.95% by weight of vinyl acetate, 0.55% by weight of a dispersant, and 0.50% by weight of an antifoaming agent were mixed at a speed of 700 ± 100 for 5 to 40 ° C. A secondary mixture is formed by mixing at a temperature, and the mixture is composed by mixing 74.55% by weight of the primary mixture and 25.45% by weight of the secondary mixture at a temperature of 5-40 ° C. at a temperature of 5-40 ° C. at a rotational speed of 700 ± 100. The composition of the fire prevention paint characterized by the above-mentioned.

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