1. A water-resistant steel structure fireproof coating is characterized by comprising epoxy emulsion, organic silicon modified polyacrylate emulsion, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate, base resin and auxiliary additives, the mass fraction of the epoxy emulsion is 20-35%, the mass fraction of the organic silicon modified polyacrylate emulsion is 8-15%, the mass fraction of the ammonium polyphosphate is 15-27 percent, the mass fraction of the melamine is 5-15 percent, the mass fraction of the dipentaerythritol is 0.5 to 3 percent, the mass fraction of the magnesium hydroxide is 3 to 6 percent, the mass fraction of the hydrated zinc borate is 0.5-2%, the mass fraction of the base resin is 15-25%, and the mass fraction of the auxiliary additive is 10-20%.

2. A water-resistant steel structure fireproof coating according to claim 1, wherein the mass fraction of the epoxy emulsion is 25%, the mass fraction of the organosilicon modified polyacrylate emulsion is 10%, the mass fraction of the ammonium polyphosphate is 16%, the mass fraction of the melamine is 8%, the mass fraction of the dipentaerythritol is 1%, the mass fraction of the magnesium hydroxide is 5%, the mass fraction of the hydrated zinc borate is 1%, the mass fraction of the binder resin is 18%, and the mass fraction of the auxiliary additive is 16%.

3. A water-resistant steel structure fireproof paint according to claim 1, wherein the auxiliary additives are flame-retardant smoke inhibitor, carbon layer enhancer, flame-retardant synergist, defoaming agent and dispersant.

4. A water-resistant fire-retardant coating for steel structures according to claim 3, wherein the dispersant, the defoamer, the flame-retardant smoke suppressant, the carbon layer enhancer and the flame-retardant synergist are all in a solid structure.

5. A water-resistant steel structure fireproof coating according to claim 3, wherein the mass ratio of the dispersing agent, the defoaming agent, the flame-retardant smoke suppressant, the carbon layer reinforcing agent and the flame-retardant synergist is 1:1:1: 1.

6. A water-resistant steel structure fireproof coating according to claim 1 or 3, wherein the epoxy emulsion, the organic silicon modified polyacrylate emulsion, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate, the base resin and the auxiliary additive are prepared by mixing in four steps, namely step one, preparing materials, preparing the materials according to the mass fraction of the steel structure fireproof coating, and step two, preparing the materials by mixing, and uniformly mixing the epoxy emulsion and the organic silicon modified polyacrylate emulsion in a mixing cylinder; step three, preparing slurry, namely putting the primary mixture prepared in the step two, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate and base resin together, stirring at a high speed for 15-25 minutes, filtering to obtain slurry, and then packaging for later use, wherein in the step four, the coating is prepared, the slurry is added into a proportioning cylinder, and while stirring, the flame-retardant smoke inhibitor, the carbon layer reinforcing agent, the flame-retardant synergist, the dispersant and the defoamer are sequentially added, the stirring speed is 100 plus materials and 300r/min, the mixture is continuously stirred until the materials are uniformly mixed, the mixture is ground for 5-6 times by a grinding machine until the fineness is less than 80 microns, and the fireproof coating is obtained after discharging.

Background

The fire-proof coating is a special coating which can reduce the surface flammability of the coated material, retard the rapid spread of fire and improve the fire endurance of the coated material, and the fire-proof principle of the fire-proof coating can be roughly divided into the following parts: 1. the fireproof coating has the characteristic of difficult combustion or non-combustion, so that the protected substrate cannot be directly contacted with air, and the ignition and combustion speed of an object is delayed; 2. the fireproof coating has low heat conductivity coefficient besides flame retardancy or incombustibility, and can delay the transmission of flame temperature to a protected substrate; 3. the fireproof coating is heated to decompose incombustible inert gas, dilute combustible gas decomposed by heating of the protected object and reduce the combustion speed; 4. the nitrogenous fireproof coating is heated to decompose groups such as NO, NH3 and the like, and the groups are combined with organic free radicals to interrupt chain reaction and reduce the surface temperature of the material; 5. the expansion type fireproof coating expands and foams by heating to form a carbon foam heat insulation layer to close and protect an object, the heat transfer with a base material is delayed, and the object is prevented from catching fire and burning and the strength is prevented from being reduced due to the temperature rise. However, the existing high-quality fireproof coating is expensive, the fireproof performance of the cheap fireproof coating cannot completely meet the use requirements of the existing middle and small enterprises, and if a novel fireproof coating with low cost and excellent fireproof performance can be developed, the problems can be solved, so that the high-durability fireproof coating is provided for people.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the water-resistant steel structure fireproof coating which is good in fireproof effect and wide in application.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a water-resistant steel structure fireproof coating comprises epoxy emulsion, organic silicon modified polyacrylate emulsion, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate, base resin and auxiliary additives, the mass fraction of the epoxy emulsion is 20-35%, the mass fraction of the organic silicon modified polyacrylate emulsion is 8-15%, the mass fraction of the ammonium polyphosphate is 15-27 percent, the mass fraction of the melamine is 5-15 percent, the mass fraction of the dipentaerythritol is 0.5 to 3 percent, the mass fraction of the magnesium hydroxide is 3 to 6 percent, the mass fraction of the hydrated zinc borate is 0.5-2%, the mass fraction of the base resin is 15-25%, and the mass fraction of the auxiliary additive is 10-20%.

In order to improve the use effect of the fireproof material, the invention further improves that the mass fraction of the epoxy emulsion is 25%, the mass fraction of the organic silicon modified polyacrylate emulsion is 10%, the mass fraction of the ammonium polyphosphate is 16%, the mass fraction of the melamine is 8%, the mass fraction of the dipentaerythritol is 1%, the mass fraction of the magnesium hydroxide is 5%, the mass fraction of the hydrated zinc borate is 1%, the mass fraction of the base resin is 18%, and the mass fraction of the auxiliary additive is 16%.

In order to improve the mixing effect of the fireproof material, the invention further improves that the auxiliary agents are a flame-retardant smoke inhibitor, a carbon layer reinforcing agent, a flame-retardant synergist, a defoaming agent and a dispersing agent.

In order to improve the use effect of the auxiliary additive, the invention further improves that the dispersant, the defoamer, the flame-retardant smoke inhibitor, the carbon layer reinforcing agent and the flame-retardant synergist are all in a solid structure, and the mass ratio of the dispersant, the defoamer, the flame-retardant smoke inhibitor, the carbon layer reinforcing agent and the flame-retardant synergist is 1:1:1: 1.

In order to improve the service performance of the fireproof material, the invention improves the preparation method of the fireproof material, and the fireproof material is prepared by mixing the epoxy emulsion, the organic silicon modified polyacrylate emulsion, the ammonium polyphosphate, the melamine, the dipentaerythritol, the magnesium hydroxide, the hydrated zinc borate, the base resin and the auxiliary additive through four steps, namely step one, mixing materials, preparing the materials according to the mass fraction of the steel structure fireproof coating, and step two, preparing the mixed materials, and uniformly mixing the epoxy emulsion and the organic silicon modified polyacrylate emulsion in a mixing cylinder; step three, preparing slurry, namely putting the primary mixture prepared in the step two, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate and base resin together, stirring at a high speed for 15-25 minutes, filtering to obtain slurry, and then packaging for later use, wherein in the step four, the coating is prepared, the slurry is added into a proportioning cylinder, and while stirring, the flame-retardant smoke inhibitor, the carbon layer reinforcing agent, the flame-retardant synergist, the dispersant and the defoamer are sequentially added, the stirring speed is 100 plus materials and 300r/min, the mixture is continuously stirred until the materials are uniformly mixed, the mixture is ground for 5-6 times by a grinding machine until the fineness is less than 80 microns, and the fireproof coating is obtained after discharging.

(III) advantageous effects

Compared with the prior art, the invention provides a water-resistant steel structure fireproof coating, which has the following beneficial effects:

the invention is a novel environment-friendly coating with low cost, excellent performance, convenient construction, good durability and wide development prospect.

The invention has the advantages of good bonding strength, good water resistance, good acid and alkali resistance, safety, no toxicity, less smoke generation, good crack resistance and cracking resistance and excellent fireproof performance, and can be widely applied to the fireproof coating protection of indoor and outdoor steel structures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention relates to a water-resistant steel structure fireproof coating, which comprises epoxy emulsion, organic silicon modified polyacrylate emulsion, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate, base resin and auxiliary additives, the mass fraction of the epoxy emulsion is 20-35%, the mass fraction of the organic silicon modified polyacrylate emulsion is 8-15%, the mass fraction of the ammonium polyphosphate is 15-27 percent, the mass fraction of the melamine is 5-15 percent, the mass fraction of the dipentaerythritol is 0.5 to 3 percent, the mass fraction of the magnesium hydroxide is 3 to 6 percent, the mass fraction of the hydrated zinc borate is 0.5-2%, the mass fraction of the base resin is 15-25%, and the mass fraction of the auxiliary additive is 10-20%.

In this embodiment, the mass fraction of the epoxy emulsion is 25%, the mass fraction of the organosilicon modified polyacrylate emulsion is 10%, the mass fraction of the ammonium polyphosphate is 16%, the mass fraction of the melamine is 8%, the mass fraction of the dipentaerythritol is 1%, the mass fraction of the magnesium hydroxide is 5%, the mass fraction of the hydrated zinc borate is 1%, the mass fraction of the base resin is 18%, and the mass fraction of the auxiliary additive is 16%, so that the raw material ratio in the fireproof material is more uniform, the fireproof performance of the fireproof material is improved, the water-resistant effect of the fireproof material is improved, and the use effect of the fireproof material is improved.

In this embodiment, the auxiliary additives are a flame-retardant smoke inhibitor, a carbon layer enhancer, a flame-retardant synergist, a defoaming agent and a dispersant, so as to improve the mixing effect of the fireproof material.

In the embodiment, the dispersing agent, the defoaming agent, the flame-retardant smoke suppressant, the carbon layer reinforcing agent and the flame-retardant synergist are all in a solid structure, and the mass ratio of the dispersing agent to the defoaming agent to the flame-retardant smoke suppressant to the carbon layer reinforcing agent to the flame-retardant synergist is 1:1:1:1, so that the raw materials of the fireproof material are mixed more stably, the fireproof performance of the fireproof material is further improved, and the use effect of the auxiliary additive is improved.

In the embodiment, the epoxy emulsion, the organic silicon modified polyacrylate emulsion, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate, base resin and an auxiliary additive are prepared by mixing four steps, namely step one, mixing materials, preparing the materials according to the mass fraction of the steel structure fireproof coating, and step two, mixing the materials, namely uniformly mixing the epoxy emulsion and the organic silicon modified polyacrylate emulsion in a mixing cylinder; step three, preparing slurry, namely putting the primary mixture prepared in the step two, ammonium polyphosphate, melamine, dipentaerythritol, magnesium hydroxide, hydrated zinc borate and base resin together, stirring at a high speed for 15-25 minutes, filtering to obtain slurry, and packaging for later use, step four, preparing coating, namely adding the slurry into a proportioning cylinder, stirring at a stirring speed of 100 plus materials at 300r/min, continuously stirring until the materials are uniformly mixed, grinding for 5-6 times by a grinding machine until the fineness is less than 80 microns, and discharging to obtain the fireproof coating

In conclusion, the water-resistant steel structure fireproof coating is a novel environment-friendly coating which is low in cost, excellent in performance, convenient to construct, good in durability and wide in development prospect.

The invention has the advantages of good bonding strength, good water resistance, good acid and alkali resistance, safety, no toxicity, less smoke generation, good crack resistance and cracking resistance and excellent fireproof performance, and can be widely applied to the fireproof coating protection of indoor and outdoor steel structures.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.