CN111087875B - Water-based fireproof coating for steel member and preparation method thereof - Google Patents
Water-based fireproof coating for steel member and preparation method thereof Download PDFInfo
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- CN111087875B CN111087875B CN201911394367.5A CN201911394367A CN111087875B CN 111087875 B CN111087875 B CN 111087875B CN 201911394367 A CN201911394367 A CN 201911394367A CN 111087875 B CN111087875 B CN 111087875B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Wood Science & Technology (AREA)
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- Inorganic Chemistry (AREA)
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Abstract
A water-based fireproof coating for steel members and a preparation method thereof relate to the technical field of fireproof coatings, and comprise the following components: 250 parts of polyurethane modified acrylate emulsion 180, 30-38 parts of dodecyl alcohol ester, 20-30 parts of ammonium borate, 18-23 parts of expandable graphite, 22-28 parts of superfine kaolin, 2-5 parts of aqueous dispersant, 2-5 parts of aqueous defoamer, 1-2 parts of mildew preventive and a proper amount of deionized water. The water-based fireproof coating has the advantages of fewer related components, lower cost, good comprehensive performance and very good market application prospect.
Description
Technical Field
The invention relates to the technical field of fireproof coatings, in particular to a water-based fireproof coating for a steel member and a preparation method thereof.
Background
At present, most of steel structure coatings are oily paints, and the paints contain organic solvents, on one hand, the organic solvents are easy to volatilize, and most of the organic solvents are toxic and harmful and have adverse effects on the environment; on the other hand, the resin and the organic solvent in the paint are organic compounds and are inflammable, and part of the organic solvent is explosive, which brings potential safety hazard to environmental places using the paint.
Waterborne fire-retardant coatings have emerged on the market for safety and environmental compliance. Chinese patent document CN109370336A discloses a water-based intumescent fire-retardant coating for a steel structure, which improves the heat insulation capability of the coating at the initial foaming expansion stage by adding modified potassium titanate whiskers, but the modified potassium titanate whiskers are prepared from potassium titanate whiskers, nano titanium dioxide and an aluminate coupling agent, and the cost is high. Chinese patent document CN104530890A discloses an aqueous acrylate fire-retardant coating, which uses potato starch to replace a part of pentaerythritol, thereby reducing the production cost of the coating, however, the addition of potato starch causes the problem of the reduction of the mildew-proof performance of the coating, although the coating utilizes the good waterproof performance of montmorillonite and methacrylic acid composite modified acrylate core-shell emulsion and the addition of mildew-proof agent DE to improve the mildew-proof performance of the coating, when the atmosphere of the use environment of the coating contains corrosive substances, such as chloride ions, the starch can mildew after a long time due to the strong penetrating ability of the chloride ions, thereby forming fine mildew stains on the surface of the coating, that is, the addition of the potato starch reduces the production cost of the coating, but also reduces the salt fog resistance of the coating. Meanwhile, the coating disclosed in the document is relatively high in component, and the purchase and storage cost of raw materials is high for large-scale production in factories.
Disclosure of Invention
The invention aims to provide a water-based fireproof coating which is less in components, lower in cost, good in comprehensive performance and applicable to steel members.
In order to solve the technical problems, the invention adopts the following technical scheme: an aqueous fire retardant coating for steel components comprising the following components: 250 parts of polyurethane modified acrylate emulsion 180, 30-38 parts of dodecyl alcohol ester, 20-30 parts of ammonium borate, 18-23 parts of expandable graphite, 22-28 parts of superfine kaolin, 2-5 parts of aqueous dispersant, 2-5 parts of aqueous defoamer, 1-2 parts of mildew preventive and a proper amount of deionized water.
Wherein the superfine kaolin is 3000-mesh kaolin powder.
Preferably, the polyurethane modified acrylate emulsion is 240 parts by weight, the dodecanol ester is 30 parts by weight, the ammonium borate is 27 parts by weight, the expandable graphite is 19 parts by weight, the superfine kaolin is 26 parts by weight, the aqueous dispersant is 3 parts by weight, the aqueous defoamer is 3 parts by weight, and the mildew preventive is 1.5 parts by weight.
As another aspect of the present invention, a method for preparing the above-described aqueous fireproof coating for steel members, characterized by comprising the steps of:
adding part of deionized water into a small charging bucket, heating to 80-85 ℃, adding ammonium borate, and stirring to completely dissolve;
stopping heating, cooling to 40-5 ℃, stirring, sequentially adding superfine kaolin, which can swell graphite, and uniformly mixing to obtain a uniformly mixed substance;
thirdly, adding the polyurethane modified acrylate emulsion, the uniform mixture obtained in the second step, the dodecyl alcohol ester, the water-based dispersant, the defoaming agent and the mildew preventive into a grinding machine in sequence, and carrying out strong grinding;
and fourthly, sampling to test viscosity, and adjusting the viscosity to a proper range by using deionized water to obtain the water-based fireproof coating for the steel member.
The main components (the main components of the coating except the conventional components of the dispersant, the defoamer and the mildew preventive) of the invention only comprise 5 components, so that the main components are less than the components of the existing water-based fireproof coating, the purchase and storage cost of materials in large-scale production in factories is relatively low, and the market prices of the 5 components are low, so the production cost of the coating is low. The paint is subjected to a neutral salt spray test (GB/1771), an adhesion test (GB/1720), a water resistance test and a fire resistance test (refer to the application technical specification CECS 24: 90 of the steel structure fireproof paint) according to related national standards, and the test results are as follows: the neutral salt spray test is carried out for 270h, the base body is free of rust, the color of the paint surface is consistent and free of visible spots, the adhesion force test result is more than 1 grade (1-0 grade), the water resistance test is carried out for 72 hours, wrinkling and falling do not exist, the fire resistance limit reaches more than 2 hours, and the test result shows that the comprehensive performance of the paint disclosed by the invention is superior to that of the water-based fireproof paint in the background technology.
Detailed Description
In order to make the improvement of the present invention over the prior art more clear to those skilled in the art, the following description will be made with reference to the following examples.
Example 1:
| component name | Parts by weight |
| Polyurethane modified acrylate emulsion | 180 |
| Ammonium borate | 25 |
| Expansible graphite | 19 |
| Esters of dodecane with alcohols | 38 |
| Superfine kaolin (3000 mesh) | 24 |
| Dispersing agent | 3 |
| Defoaming agent | 3 |
| Mildew preventive | 1 |
Wherein the dispersant is commercially available dispersant of DS-195 series, the defoamer is emulsion defoamer produced by south China sea field chemical Co., Ltd, of Foshan city, and the model is IC01, and the mildew preventive is Liyuan brand BJ-75 mildew preventive produced by Foshan Liyuanjiu chemical Co., Ltd. The test results are shown in tables 1-4.
Example 2:
compared with the example 1, the example 2 only changes the mixture ratio of the components, and the mixture ratio of the components in the example 2 is as follows:
| component name | Parts by weight |
| Polyurethane modified acrylate emulsion | 190 |
| Ammonium borate | 20 |
| Expansible graphite | 18 |
| Esters of dodecane with alcohols | 30 |
| Superfine kaolin (3000 mesh) | 28 |
| Dispersing agent | 2 |
| Defoaming agent | 2 |
| Mildew preventive | 1.5 |
As in example 1, the dispersant in this example was a commercially available dispersant sold under the brand name DS-195 series, the defoamer IC01 was an emulsion type defoamer manufactured by south China sea field chemical Co., Ltd, of Fushan City, the type IC01, and the mildew preventive was a Liyuan brand BJ-75 mildew preventive manufactured by Fushan Liyuan chemical Co., Ltd. The test results are shown in tables 1-4.
Example 3:
compared with the examples 1 and 2, the example 3 only changes the mass percentage of each component, and the mixture ratio of each component in the example 3 is as follows:
| component name | Parts by weight |
| Polyurethane modified acrylate emulsion | 250 |
| Ammonium borate | 30 |
| Expansible graphite | 23 |
| Esters of dodecane with alcohols | 36 |
| Superfine kaolin (3000 mesh) | 22 |
| Dispersing agent | 5 |
| Defoaming agent | 5 |
| Mildew preventive | 2 |
As in examples 1 and 2, the dispersant in this example was a commercially available dispersant sold under the brand name DS-195 series, the defoamer IC01 was an emulsion type defoamer manufactured by south China sea field chemical Co., Ltd, Fushan City, the type of which was IC01, and the mildew preventive was a Liyuan brand model BJ-75 mildew preventive manufactured by Fushan Liyuanzai chemical Co., Ltd. The test results are shown in tables 1-4.
Example 4:
compared with the examples 1 to 3, the example 4 only changes the mass percentage of each component, and the mixture ratio of each component in the example 4 is as follows:
| component name | Parts by weight |
| Polyurethane modified acrylate emulsion | 240 |
| Ammonium borate | 27 |
| Expansible graphite | 19 |
| Esters of dodecane with alcohols | 30 |
| Superfine kaolin (3000 mesh) | 26 |
| Dispersing agent | 3 |
| Defoaming agent | 3 |
| Mildew preventive | 1.5 |
As in examples 1-3, the dispersant in this example was a commercially available dispersant sold under the brand name DS-195 series, the defoamer IC01 was an emulsion type defoamer manufactured by south China sea field chemical Co., Ltd, Foshan, the type of which was IC01, and the mildew preventive was a Liyuan brand BJ-75 mildew preventive manufactured by Foshan Lizai chemical Co., Ltd. The test results are shown in Table 5.
The preparation method of the water-based fireproof coating in the above examples 1-4 comprises the following steps: 1. adding part of deionized water into a small charging bucket, heating to 80-85 ℃, adding ammonium borate, and stirring to completely dissolve. 2. Stopping heating, cooling to 40-5 deg.C, stirring, sequentially adding superfine kaolin, which can swell graphite, and mixing to obtain a uniform mixture. 3. And (3) adding the polyurethane modified acrylate emulsion, the uniform mixture obtained in the step (2), the dodecyl alcohol ester, the water-based dispersant, the defoaming agent and the mildew preventive into a grinding machine in sequence, and strongly grinding. 4. Sampling and testing the viscosity, and adjusting the viscosity to a proper range by using deionized water to obtain the water-based fireproof coating involved in each embodiment.
The performance test method comprises the following steps: a proper amount of paint is coated on a steel substrate, and a neutral salt spray test (GB/1771), an adhesion test (GB/1720), a water resistance test and a fire resistance test (refer to the application technical specification CECS 24: 90 of the steel structure fireproof paint) are respectively carried out according to related national standards, and the test results are as follows.
TABLE 5
| Test items | Example 1 | Example 2 | Example 3 | Example 4 |
| Neutral salt spray test | The substrate is not rusted for 270h, and the paint surface is not provided with visible spots | 275h without rust and visible spots on the paint surface | The 280h basal body has no rust and no visible spot on the paint surface | The matrix is free from rust and visible spots on the paint surface within 300h |
| Adhesion test | Level 1 | Level 1 | Level 1 | Level 0 |
| Water resistance test | The paint surface is free from wrinkling and falling off after 72 hours | The paint surface is free from wrinkling and falling off after 72 hours | The paint surface is free from wrinkling and falling off after 72 hours | The paint surface is free from wrinkling and falling off after 72 hours |
| Fire resistance test | 2h | 2.2h | 2.1h | 2.7h |
From the above examples 1 to 4 and the test results thereof, it can be seen that the main component of the aqueous fire retardant coating composition of the present invention (the main component of the coating composition excluding the conventional auxiliary components of the dispersant, the defoamer and the mildewcide) comprises only 5 components, which is less than that of the aqueous fire retardant coating composition of the background art, the procurement and storage costs of the materials are relatively low in mass production in factories, and the market prices of the 5 components are relatively low, so that the production cost of the coating composition is relatively low, and the test results thereof are superior to that of the aqueous fire retardant coating composition of the background art.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention. Some descriptions of the present invention have been simplified to facilitate understanding of the improvement of the present invention over the prior art by those of ordinary skill in the art, and some other elements have been omitted from this document for clarity, and those omitted elements should be recognized by those of ordinary skill in the art to constitute the content of the present invention.
Claims (4)
1. An aqueous fire-retardant coating for steel members, consisting of the following components: 250 parts of polyurethane modified acrylate emulsion 180-one, 30-38 parts of dodecyl alcohol ester, 20-30 parts of ammonium borate, 18-23 parts of expandable graphite, 22-28 parts of superfine kaolin, 2-5 parts of water-based dispersant, 2-5 parts of water-based defoamer, 1-2 parts of mildew preventive and a proper amount of deionized water.
2. The aqueous fireproof coating for steel members according to claim 1, characterized in that: the superfine kaolin is 3000-mesh kaolin powder.
3. The aqueous fireproof coating for steel members according to claim 1 or 2, wherein: the polyurethane modified acrylate emulsion is 240 parts by weight, the dodecyl alcohol ester is 30 parts by weight, the ammonium borate is 27 parts by weight, the expandable graphite is 19 parts by weight, the superfine kaolin is 26 parts by weight, the aqueous dispersant is 3 parts by weight, the aqueous defoaming agent is 3 parts by weight, and the mildew preventive is 1.5 parts by weight.
4. A method of preparing the aqueous fireproof coating for steel members according to any one of claims 1 to 3, comprising the steps of:
adding part of deionized water into a small charging bucket, heating to 80-85 ℃, adding ammonium borate, and stirring to completely dissolve;
stopping heating, cooling to 40 ℃, stirring, sequentially adding superfine kaolin and expandable graphite, and uniformly mixing to obtain a uniformly mixed substance;
thirdly, adding the polyurethane modified acrylate emulsion, the uniform mixture obtained in the second step, the dodecyl alcohol ester, the water-based dispersant, the water-based defoamer and the mildew preventive into a grinding machine in sequence, and carrying out strong grinding;
and fourthly, sampling to test viscosity, and adjusting the viscosity to a proper range by using deionized water to obtain the water-based fireproof coating for the steel member.
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| CN201911394367.5A CN111087875B (en) | 2019-12-30 | 2019-12-30 | Water-based fireproof coating for steel member and preparation method thereof |
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| CN111087875B true CN111087875B (en) | 2022-02-08 |
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| CN115820100A (en) * | 2022-08-08 | 2023-03-21 | 山东奔腾漆业股份有限公司 | Flame-retardant coating containing polyurethane acrylate and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503591A (en) * | 2009-03-03 | 2009-08-12 | 公安部四川消防研究所 | Aqueous low smoke low toxicity thin section steel structure fire-resisting paint and preparation thereof |
| CN106147445A (en) * | 2016-06-28 | 2016-11-23 | 合众（佛山）化工有限公司 | A kind of self-flame-retardant aqueous environmental protection coating material and preparation method |
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| CN105038489B (en) * | 2015-09-02 | 2017-07-18 | 太仓市金新涂料有限公司 | A kind of acrylic resin modified energy-saving and environment-friendly paint of product packaging can |
| CN105505026A (en) * | 2016-02-19 | 2016-04-20 | 徐冉 | Water-based ultra-thin expansive type steel structure fire-retardant coating and preparation method thereof |
| CN108395750A (en) * | 2018-04-19 | 2018-08-14 | 佛山市康东照明科技有限公司 | A kind of expanded water-based polyurethane-modified acrylic acid woodware fireproof paint of facing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503591A (en) * | 2009-03-03 | 2009-08-12 | 公安部四川消防研究所 | Aqueous low smoke low toxicity thin section steel structure fire-resisting paint and preparation thereof |
| CN106147445A (en) * | 2016-06-28 | 2016-11-23 | 合众（佛山）化工有限公司 | A kind of self-flame-retardant aqueous environmental protection coating material and preparation method |
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