Fireproof coating for building fire prevention and preparation method thereof

Abstract

The invention discloses a fireproof coating for building fire prevention and a preparation method thereof, and solves the technical problem of high use cost of part of existing fireproof coatings. Comprising 25 to 40 parts of refractory cement, 20 to 30 parts of fly ash, 15 to 25 parts of floating beads, 12 to 20 parts of calcium carbonate, 2 to 3 parts of an emulsion, 0.5 to 2 parts of a flame retardant, 10 to 20 parts of a dispersant, 0.2 to 1.5 parts of a thickening agent, 0.1 to 0.2 part of an antifoaming agent and 25 to 35 parts of water. The fly ash, the floating beads and the calcium carbonate are used as fillers, the fly ash is one of industrial waste residues with large discharge capacity in a current coal-fired power plant, the floating beads are formed by combusting argillaceous substances in pulverized coal and are fly ash industrial waste, and the calcium carbonate is a filler with low price, so that the fly ash, the floating beads and the calcium carbonate are environmentally friendly. The fly ash and the floating beads are recycled and matched with the calcium carbonate for use, the fireproof performance and the use durability of the fireproof coating are enhanced through the synergistic effect of the fly ash, the floating beads and the calcium carbonate, the use amount of other high-cost components in the fireproof coating is reduced, and the cost of the fireproof coating is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of building fire protection, and in particular relates to a fire retardant coating for building fire protection and a preparation method thereof. Background Art

[0002] In recent years, high-rise building fire accidents have occurred frequently, causing serious economic losses and casualties. When a fire occurs, it is difficult to control the fire in a high-rise building, and it is difficult to slow down or extinguish the fire in a high-rise building by external means. The reasons why high-rise building fires are difficult to control include: there are many long vertical passages inside high-rise buildings, such as stairwells, elevator shafts, cable shafts, ventilation ducts, etc. When a fire occurs, these passages are like "chimneys", accelerating the vertical spread of fire and smoke; the interior decoration of high-rise buildings is complex, there are many combustibles, and the fire load is large. When a fire occurs, the fire is easy to get out of control; due to the high height of high-rise buildings, it is difficult for existing fire-fighting equipment to directly reach the fire source, and it is necessary to use stairs, elevators and other equipment to enter. However, when a fire occurs, these equipment may be damaged or cannot operate normally, resulting in firefighters unable to reach the fire source in time to extinguish the fire; the smoke and toxic gases produced by the fire will affect the sight and breathing of firefighters, reducing the efficiency of fire extinguishing. At the same time, smoke and toxic gases may also spread upward through vertical pipes such as stairwells and elevator shafts, further expanding the fire. Due to the various reasons why fires in high-rise buildings are difficult to control, high-rise buildings mainly rely on self-rescue in terms of fire protection. The existing means to improve the fire resistance of high-rise buildings are usually: applying fire-retardant paint on high-rise buildings, or using fire-proof panels for fireproof partitions. However, some existing fire-retardant paints are relatively expensive. To paint a complete high-rise building, a large amount of fire-retardant paint is required, and the cost of using fire-retardant paint is high, which reduces the construction efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a fire retardant coating for building fire protection and a preparation method thereof, so as to solve the technical problem that the use cost of some existing fire retardant coatings is relatively high.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A fire retardant coating for building fire protection, comprising the following components in parts by weight:

[0006]

[0007] Furthermore, the emulsion is any one or more of silicone-acrylic emulsion, styrene-acrylic emulsion, and pure acrylic emulsion.

[0008] Furthermore, the emulsion is a silicone-acrylic emulsion.

[0009] Furthermore, the flame retardant is any one or more of chlorinated paraffin, aluminum hydroxide and magnesium hydroxide.

[0010] Furthermore, the flame retardant is chlorinated paraffin.

[0011] Furthermore, the dispersant is water glass.

[0012] Furthermore, the thickener is hydroxyethyl cellulose.

[0013] Furthermore, the defoaming agent is any one or more of palm oil, ethanol, and polyether-modified polysiloxane.

[0014] Furthermore, the defoaming agent is polyether-modified polysiloxane.

[0015] A method for preparing a fire retardant coating for building fire protection comprises the following steps:

[0016] Step 1: weigh the raw materials in parts by weight;

[0017] Step 2: Add water, flame retardant, dispersant and thickener to the mixer in sequence, turn on the mixer, adjust the mixer speed to 1300r / min, and the mixing time is 20-30min;

[0018] Step 3: Reduce the mixer speed to 800r / min, slowly add refractory cement, fly ash, floating beads, calcium carbonate, 20%-30% defoamer into the mixer, and stir for 15-25min;

[0019] Step 4: Add the emulsion and the remaining defoamer into the mixer and continue stirring for 25-35 minutes. After mixing evenly, the fire retardant coating is obtained.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses fly ash, floating beads and calcium carbonate as fillers, which enhances the fireproof performance of fireproof coatings, reduces the amount of other high-cost components in fireproof coatings, and reduces the cost of fireproof coatings. Among them, fly ash is the waste remaining after coal powder is burned, and is one of the industrial waste residues with large displacement in current coal-fired power plants. Floating beads are glassy hollow microspheres, which are formed by the clay material in coal powder after burning, and are a kind of fly ash industrial waste. Calcium carbonate is a relatively cheap filler. The present invention recycles fly ash and floating beads, and uses them in combination with calcium carbonate, and utilizes the synergistic effect of fly ash, floating beads and calcium carbonate to enhance the fireproof performance and durability of fireproof coatings, reduces the amount of other high-cost components in fireproof coatings, and reduces the cost of fireproof coatings. Floating beads and calcium carbonate are relatively hard in homogeneity, which can enhance the strength of fireproof coatings and improve the impact resistance of fireproof coatings.

[0022] The floating beads, calcium carbonate and dispersant of the present invention improve the construction performance of the fire retardant coating, making the fire retardant coating easy to construct; the refractory cement, thickener and emulsion enhance the bonding strength of the fire retardant coating, allowing the fire retardant coating to be firmly coated on the building, and improving the durability of the fire retardant coating. The flame retardant can effectively slow down the spread of fire in the house, further enhancing the fire retardant performance of the fire retardant coating. The defoaming agent eliminates the foam generated during the stirring process during the preparation of the fire retardant coating, ensuring the uniformity of the fire retardant coating. Among them, the dispersant of the present invention preferably uses water glass, and the dispersibility of water glass is used to disperse the solid particles in the fire retardant coating, improve the construction performance of the fire retardant coating, and improve the fluidity and plasticity of the fire retardant coating, so that the fire retardant coating is easy to construct; the thickener of the present invention preferably uses hydroxyethyl cellulose, which can significantly increase the viscosity of the fire retardant coating, making the fire retardant coating thicker, which helps to prevent the fire retardant coating from sagging and leaking during the construction process, and improves the coating efficiency and quality; the fire retardant coating usually contains a variety of solid particles, and these particles are prone to precipitation in the fire retardant coating, resulting in coating stratification, hydroxyethyl cellulose The element can inhibit the precipitation of these particles, stabilize the coating components, and ensure the uniformity and stability of the coating; the emulsion of the present invention preferably uses silicone acrylic emulsion, which significantly improves the bonding strength of the fire retardant coating; the flame retardant of the present invention preferably uses chlorinated paraffin, which has excellent flame retardant properties and can significantly improve the fire retardant properties of the fire retardant coating, and is relatively cheap, which can reduce the cost of the fire retardant coating; the defoamer of the present invention preferably uses polyether modified polysiloxane, which can eliminate foam while improving the wettability, dispersibility and leveling properties of the coating, thereby improving the construction performance of the coating and the quality of the final coating. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention more clear, the present invention is further described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] Add 25 parts of water, 0.5 parts of flame retardant, 10 parts of dispersant and 0.3 parts of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 25 minutes, adjust the mixer speed to 800r / min. Then, slowly add 25 parts of refractory cement, 20 parts of fly ash, 16 parts of floating beads, 14 parts of calcium carbonate and 0.03 parts of defoaming agent to the mixer. After stirring for 15 minutes, add 2 parts of emulsion and 0.1 parts of defoaming agent to the mixer and continue stirring. After stirring for 30 minutes, the fire retardant coating is obtained.

[0026] Example 2

[0027] Add 31 parts of water, 0.7 parts of flame retardant, 20 parts of dispersant and 0.2 parts of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 30 minutes, adjust the mixer speed to 800r / min. Then, slowly add 35 parts of refractory cement, 30 parts of fly ash, 15 parts of floating beads, 12 parts of calcium carbonate and 0.04 parts of defoaming agent to the mixer. After stirring for 25 minutes, add 2.2 parts of emulsion and 0.15 parts of defoaming agent to the mixer and continue stirring. After stirring for 25 minutes, the fire retardant coating is obtained.

[0028] Example 3

[0029] Add 30 parts of water, 2 parts of flame retardant, 15 parts of dispersant and 1 part of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 20 minutes, adjust the mixer speed to 800r / min. Then, slowly add 40 parts of refractory cement, 21 parts of fly ash, 25 parts of floating beads, 20 parts of calcium carbonate, and 0.035 parts of defoaming agent to the mixer. After stirring for 20 minutes, add 2.3 parts of emulsion and 0.12 parts of defoaming agent to the mixer and continue stirring. After stirring for 35 minutes, the fire retardant coating is obtained.

[0030] Example 4

[0031] Add 35 parts of water, 1 part of flame retardant, 12 parts of dispersant and 1.5 parts of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 22 minutes, adjust the mixer speed to 800r / min. Then, slowly add 33 parts of refractory cement, 25 parts of fly ash, 20 parts of floating beads, 16 parts of calcium carbonate, and 0.05 parts of defoaming agent to the mixer. After stirring for 21 minutes, add 2.8 parts of emulsion and 0.18 parts of defoaming agent to the mixer and continue stirring. After stirring for 28 minutes, the fire retardant coating is obtained.

[0032] Example 5

[0033] Add 32 parts of water, 1.5 parts of flame retardant, 18 parts of dispersant and 1.3 parts of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 27 minutes, adjust the mixer speed to 800r / min. Then, slowly add 27 parts of refractory cement, 22 parts of fly ash, 18 parts of floating beads, 15 parts of calcium carbonate, and 0.06 parts of defoaming agent to the mixer. After stirring for 23 minutes, add 2.7 parts of emulsion and 0.16 parts of defoaming agent to the mixer and continue stirring. After stirring for 33 minutes, the fire retardant coating is obtained.

[0034] Example 6

[0035] Add 28 parts of water, 0.5 parts of flame retardant, 11 parts of dispersant and 1.4 parts of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 29 minutes, adjust the mixer speed to 800r / min. Then, slowly add 38 parts of refractory cement, 27 parts of fly ash, 23 parts of floating beads, 18 parts of calcium carbonate, and 0.07 parts of defoaming agent to the mixer. After stirring for 18 minutes, add 2.6 parts of emulsion and 0.19 parts of defoaming agent to the mixer and continue stirring. After stirring for 27 minutes, the fire retardant coating is obtained.

[0036] Example 7

[0037] Add 34 parts of water, 1.8 parts of flame retardant, 14 parts of dispersant and 0.4 parts of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 28 minutes, adjust the mixer speed to 800r / min. Then, slowly add 32 parts of refractory cement, 24 parts of fly ash, 19 parts of floating beads, 17 parts of calcium carbonate and 0.02 parts of defoaming agent to the mixer. After stirring for 17 minutes, add 2.4 parts of emulsion and 0.08 parts of defoaming agent to the mixer and continue stirring. After stirring for 34 minutes, the fire retardant coating is obtained.

[0038] Example 8

[0039] Add 27 parts of water, 1.6 parts of flame retardant, 19 parts of dispersant and 0.5 parts of thickener to the mixer in sequence, turn on the mixer, and adjust the mixer speed to 1300r / min. After stirring for 24 minutes, adjust the mixer speed to 800r / min. Then, slowly add 28 parts of refractory cement, 29 parts of fly ash, 24 parts of floating beads, 19 parts of calcium carbonate and 0.04 parts of defoaming agent to the mixer. After stirring for 16 minutes, add 3 parts of emulsion and 0.15 parts of defoaming agent to the mixer and continue stirring. After stirring for 29 minutes, the fire retardant coating is obtained.

[0040] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or modifications made to the main design concept and spirit of the present invention that have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A fire retardant coating for building fire protection, characterized in that: It is composed of the following components in parts by weight:

2. A fire retardant coating for building fire protection according to claim 1, characterized in that: The emulsion is any one or more of silicone-acrylic emulsion, styrene-acrylic emulsion and pure acrylic emulsion.

3. A fire retardant coating for building fire protection according to claim 2, characterized in that: The emulsion is a silicone acrylic emulsion.

4. A fire retardant coating for building fire protection according to claim 1, characterized in that: The flame retardant is any one or more of chlorinated paraffin, aluminum hydroxide and magnesium hydroxide.

5. A fire retardant coating for building fire protection according to claim 4, characterized in that: The flame retardant is chlorinated paraffin.

6. A fire retardant coating for building fire protection according to claim 1, characterized in that: The dispersant is water glass.

7. A fire retardant coating for building fire protection according to claim 1, characterized in that: The thickener is hydroxyethyl cellulose.

8. A fire retardant coating for building fire protection according to claim 1, characterized in that: The defoaming agent is any one or more of palm oil, ethanol and polyether-modified polysiloxane.

9. A fire retardant coating for building fire protection according to claim 8, characterized in that: The defoaming agent is polyether modified polysiloxane.

10. A method for preparing a fire retardant coating for building fire protection according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: weigh the raw materials in parts by weight; Step 2: Add water, flame retardant, dispersant and thickener to the mixer in sequence, turn on the mixer, adjust the mixer speed to 1300r / min, and the mixing time is 20-30min; Step 3: Reduce the mixer speed to 800r / min, slowly add refractory cement, fly ash, floating beads, calcium carbonate, 20%-30% defoamer into the mixer, and stir for 15-25min; Step 4: Add the emulsion and the remaining defoamer into the mixer and continue stirring for 25-35 minutes. After mixing evenly, the fire retardant coating is obtained.

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