CN110776772A - Loess-based fireproof embankment fireproof coating and preparation method thereof - Google Patents
Loess-based fireproof embankment fireproof coating and preparation method thereof Download PDFInfo
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- CN110776772A CN110776772A CN201911097289.2A CN201911097289A CN110776772A CN 110776772 A CN110776772 A CN 110776772A CN 201911097289 A CN201911097289 A CN 201911097289A CN 110776772 A CN110776772 A CN 110776772A
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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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
- C09D7/65—Additives macromolecular
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- Paints Or Removers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a loess-based fireproof embankment fireproof coating and a preparation method thereof. The composition and the preparation method are as follows: adding 0.8-1.2 parts of 42.5R Portland cement and 0.5-1.0 part of ethylene-vinyl acetate copolymer emulsion rubber powder with the glass transition temperature of 17-19 ℃ into a gravity-free stirrer, opening a fly cutter, stirring for 5min, and then closing the fly cutter; then sequentially adding 2.0-3.5 parts of vermiculite with the particle size of 0.5-2.5 mm and 1.5-2.5 parts of vermiculite with the volume weight of less than 100kg/m
3The perlite and 2.5-3.5 parts of loess powder with the granularity of 40 meshes are continuously stirred for 5 min; adding 0.05-0.1 part of cement admixture and 0.2-0.5 part of organosilane powder, and continuously stirring for 25min to obtain the cement mortar with loose volume weight of 450-500 kg/m
3Powder material; taking a powder mixture according to the ratio of 1:0.8The loess-based fire-proof embankment fire-retardant coating is obtained by mixing clear water in a weight ratio of 1:1, and stirring the mixture evenly to form thick slurry. The fire-retardant coating for the fire dam uses common tap water as a diluent, does not contain an organic solvent, and has the advantages of excellent fire resistance, high bonding strength, high crack resistance, heat exposure resistance, good safety, low cost, simple construction and the like. The coating meets the standard of GB28375-2012 'fireproof coating for concrete structure' and the fire resistance limit reaches more than 3.0 h.
Description
Technical Field
The invention relates to the technical field of fireproof paint for a fireproof dike, in particular to loess-based fireproof paint for a fireproof dike and a preparation method thereof.
Background
The fire-proof coating for the fire dike is a special coating which is coated on the concrete surface of the fire dike in a petrochemical storage tank area and can form a fire-proof heat-insulating protective layer so as to improve the fire resistance limit of a structure. Due to the particularity of the environment of the fire dam, the fire retardant coating is suitable for various natural weathers, can bear the impact of liquid leaked from a tank area on the fire dam, and can effectively protect the fire dam after hazardous chemicals in the fire dam are combusted so as to prevent the combusted liquid from leaking out to spread a fire, so that higher requirements are provided for the performances of the coating, such as high temperature resistance, low temperature resistance, ultraviolet resistance, drying resistance, rain wash resistance, organic solvent soaking resistance and the like. The general fireproof coating cannot meet the requirement of fire safety of a fire dike, so that the research and development of the special fireproof coating for the fire dike have very important significance for improving the fire safety of a storage tank area and the working efficiency of fire extinguishment and rescue.
In recent years, a series of important research results have been obtained in the field of fire-retardant coatings for fire-retardant embankments at home and abroad (Dingguanping et al, research and application of fire-retardant coatings for fire-retardant embankments, coating technology and abstract 2014, 8, Luxi et al, technical characteristics and research of fire-retardant coatings for fire-retardant embankments, fire extinguishing agents and flame-retardant materials 2016, 4, Bivian et al, experimental research and research of ecological fire-retardant coatings, Shanghai coatings, 2005, 10, Hodging et al, materials and construction application of fire-retardant coatings for super high-rise steel structures, research and application of academic and technical seminar proceedings for national fire-retardant coatings, 2010, 4, Dingguanping et al, research and application of thick fire-retardant coatings for steel structures, discussion of first Special coating technology and application seminal, 2007, 9, Yopandai et al, discussion of relation between intumescent fire-retardant coatings and emulsion vitrification temperature, discussion of first Special coating technology and application proceedings for fire-retardant coatings, 2007, 9; CN106800838A discloses a fire dam fire retardant coating and a construction method thereof, CN101173120A discloses a special LT type fire dam heat insulation fire retardant coating and a preparation method thereof, and CN104130671A discloses a water-based ultrathin expansion type fire retardant coating for a steel structure and a preparation method thereof), so that the construction performance, the pumping performance, the service life and the like of the coating are greatly improved.
At present, the domestic fireproof embankment coating has the following problems: the transportation and mixing operation of the two-component coating is inconvenient; the paint has poor pumping performance; the organic fireproof coating is easy to release VOC in the using process, and organic components in the coating are easy to degrade and age, so that the phenomena of peeling and pulverization occur, the bonding strength is reduced, and the flame retardant effect is poor; the coating has poor adhesion with concrete and poor rainwater (acid) resistance; the coating of the amino resin paint is easy to crack and has poor weather resistance.
Disclosure of Invention
The invention provides a loess-based fireproof dike fireproof coating with good fireproof performance, high bonding strength, low cost and convenient construction and a preparation method thereof, aiming at the technical problems in the fireproof coating of the fireproof dike.
The loess-based fire dike fire retardant coating provided by the invention consists of powder and water, and the weight ratio of the powder to the water is 1: 0.8-1: 1.
The powder material comprises the following raw materials in parts by weight: 2.0 to 3.5 parts of vermiculite with the particle diameter of 0.5 to 2.5mm and the volume weight of less than 100kg/m
31.5 to 2.5 parts of perlite, 2.5 to 3.5 parts of loess powder with the granularity of 40 meshes, 0.8 to 1.2 parts of 42.5R Portland cement, 0.05 to 0.1 part of cement additive, 0.2 to 0.5 part of organosilane powder and 0.5 to 1.0 part of ethylene-vinyl acetate copolymer emulsion rubber powder with the glass transition temperature of 17 to 19 ℃.
The loess powder is obtained by grinding clean and dry loess into loess powder of 40 meshes, roasting at 900-1000 ℃ for 2.0-3.0 h, and grinding and sieving with a sieve of 40 meshes.
The preparation method of the loess-based fire dam fireproof coating provided by the invention comprises the following steps:
(1) weighing the raw materials according to the proportion;
(2) adding cement and ethylene-vinyl acetate copolymer emulsion rubber powder into a gravity-free stirrer, opening a fly cutter to avoid adhesion and prevent uneven stirring, and closing the fly cutter after stirring for 5 min; sequentially adding vermiculite, perlite and loess powder, and continuously stirring for 5 min; adding the cement admixture and the organosilane powder, and continuously stirring for 25min to obtain the cement admixture with loose volume weight of 450-500 kg/m
3The dry powder (the proportion of vermiculite and cement can be adjusted) is powder.
(3) And (3) mixing the powder mixture with clear water according to the weight ratio of 1: 0.8-1: 1, and uniformly stirring to obtain thick slurry, namely the loess-based fire-proof embankment fire-retardant coating. The application time is within 30min, otherwise the adhesion is reduced.
Compared with the prior art, the invention has the following technical characteristics:
the fire-retardant coating for the fire dike is prepared by using the properties of loess such as film forming, adhesion, thickening, air permeability and the like, taking high-temperature roasted loess as a base material and selecting common portland cement and ethylene-vinyl acetate copolymer emulsion as a composite binder, so that the internal reinforcement and water resistance of the coating are effectively improved, the bonding strength of the fire-retardant coating and base materials such as the fire dike, a partition wall and the like is improved, and the using amount of other chemical auxiliaries is reduced.
The paint prepared by the invention is a novel water-based fireproof paint, has low dry density, strong adhesive force, good affinity with cement wall surfaces and obvious fireproof and flame-retardant effects, and can be widely applied to fireproof protection of fireproof dikes, protective walls and partition walls of various indoor and outdoor concrete structures.
The product prepared by the invention is single-component solid powder, and is convenient to transport and mix on the construction site. When the paint is used on site, the paint can be sprayed or brushed after the powder and clear water are mixed according to the weight ratio of 1: 0.8-1: 1 and are uniformly stirred.
The invention has the characteristics of abundant and easily obtained raw materials, lower production cost, simple preparation process, easy industrial production, safe and environment-friendly products, high cost performance and the like.
Detailed Description
The following provides a more detailed description of the present invention with reference to specific examples.
Example 1 the loess-based fire dam fire retardant coating is composed of powder and water, wherein the powder is composed of the following raw materials in parts by weight: 2.0 parts of vermiculite, 2.5 parts of perlite, 3.2 parts of loess powder, 1.1 parts of Portland cement, 0.1 part of cement admixture, 0.3 part of organosilane powder and 0.8 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
The loess powder is obtained by grinding clean and dry loess into loess powder of 40 meshes, roasting at 900-1000 ℃ for 2.0-3.0 h, and grinding and sieving with a sieve of 40 meshes.
The preparation method of the loess-based fireproof embankment fireproof coating comprises the following steps:
(1) weighing the raw materials according to the proportion;
(2) adding cement and ethylene-vinyl acetate copolymer emulsion rubber powder into a gravity-free stirrer, opening a fly cutter to avoid adhesion and prevent uneven stirring, and closing the fly cutter after stirring for 5 min; sequentially adding vermiculite, perlite and loess powder, and continuously stirring for 5 min; adding the cement admixture and the organosilane powder, and continuously stirring for 25min to obtain the cement admixture with loose volume weight of 450-500 kg/m
3The dry powder (the proportion of vermiculite and cement can be adjusted) is powder.
(3) And (3) mixing the powder mixture with clear water according to the weight ratio of 1: 0.8-1: 1, and uniformly stirring to obtain thick slurry, namely the loess-based fire-proof embankment fire-retardant coating. The application time is within 30min, otherwise the adhesion is reduced.
Example 2 the loess-based fire dam fire retardant coating is composed of powder and water, wherein the powder is composed of the following raw materials in parts by weight: 2.7 parts of vermiculite, 2.5 parts of perlite, 2.5 parts of loess powder, 1.2 parts of Portland cement, 0.05 part of cement admixture, 0.4 part of organosilane powder and 0.65 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
Wherein: the proportion of the powder and the water, and the preparation method of the loess powder and the loess-based fire protection embankment fire protection coating are the same as the example 1.
Example 3 the loess-based fire dam fire retardant coating is composed of powder and water, wherein the powder is composed of the following raw materials in parts by weight: 3.45 parts of vermiculite, 2.0 parts of perlite, 2.5 parts of loess powder, 0.8 part of Portland cement, 0.05 part of cement admixture, 0.2 part of organosilane powder and 1.0 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
Wherein: the proportion of the powder and the water, and the preparation method of the loess powder and the loess-based fire protection embankment fire protection coating are the same as the example 1.
Example 4 the loess-based fire dam fire retardant coating is composed of powder and water, wherein the powder is composed of the following raw materials in parts by weight: 2.5 parts of vermiculite, 1.64 parts of perlite, 3.5 parts of loess powder, 0.9 part of Portland cement, 0.06 part of cement admixture, 0.5 part of organosilane powder and 0.9 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
Wherein: the proportion of the powder and the water, and the preparation method of the loess powder and the loess-based fire protection embankment fire protection coating are the same as the example 1.
Example 5 the loess-based fire dam fire retardant coating is composed of a powder material and water, wherein the powder material is composed of the following raw materials in parts by weight: 3.0 parts of vermiculite, 1.5 parts of perlite, 3.2 parts of loess powder, 1.2 parts of Portland cement, 0.1 part of cement admixture, 0.3 part of organosilane powder and 0.7 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
Wherein: the proportion of the powder and the water, and the preparation method of the loess powder and the loess-based fire protection embankment fire protection coating are the same as the example 1.
Example 6 the loess-based fire dam fire retardant coating is composed of a powder and water, wherein the powder is composed of the following raw materials in parts by weight: 3.0 parts of vermiculite, 1.8 parts of perlite, 2.9 parts of loess powder, 1.2 parts of Portland cement, 0.1 part of cement admixture, 0.5 part of organosilane powder and 0.5 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
Wherein: the proportion of the powder and the water, and the preparation method of the loess powder and the loess-based fire protection embankment fire protection coating are the same as the example 1.
Example 7 the loess-based fire dam fire retardant coating is composed of a powder and water, wherein the powder is composed of the following raw materials in parts by weight: 2.2 parts of vermiculite, 2.3 parts of perlite, 2.6 parts of loess powder, 1.1 parts of Portland cement, 0.8 part of cement admixture, 0.4 part of organosilane powder and 0.6 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
Wherein: the proportion of the powder and the water, and the preparation method of the loess powder and the loess-based fire protection embankment fire protection coating are the same as the example 1.
Example 8 the loess-based fire dam fire retardant coating is composed of a powder and water, wherein the powder is composed of the following raw materials in parts by weight: 3.1 parts of vermiculite, 1.7 parts of perlite, 3.1 parts of loess powder, 0.9 part of Portland cement, 0.07 part of cement admixture, 0.33 part of organosilane powder and 0.8 part of ethylene-vinyl acetate copolymer emulsion rubber powder.
Wherein: the proportion of the powder and the water, and the preparation method of the loess powder and the loess-based fire protection embankment fire protection coating are the same as the example 1.
Compared with the prior art, the fireproof coating for the fire dam prepared by the invention is a single-component water-based coating, and has the characteristics of good fireproof performance (the fireproof limit is more than 3.0h), high bonding strength, high compressive strength, abundant and easily-obtained raw materials, lower production cost, simple preparation process, easiness in industrial production, safety and environmental friendliness of products, high cost performance, convenience in construction and the like. The product is detected by the product quality supervision and inspection institute in Xian city, the main technical indexes of the product meet the standard requirements of fireproof coating for concrete structure (GB28375-2012), and the product has good practical popularization value.
TABLE 1 test results of loess-based fire dam fire retardant coating
The above description and applications are illustrative, and the scope of the present invention is not intended to be limited to the above embodiments, and therefore the present invention is not limited to the embodiments, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. A loess-based fire protection coating for a fire protection dam, which is characterized in that: the coating consists of powder and water, and the weight ratio of the powder to the water is 1: 0.8-1: 1.
2. The powder material of claim 1, which is prepared from the following raw materials in parts by weight: 2.0 to 3.5 parts of vermiculite with the particle diameter of 0.5 to 2.5mm and the volume weight of less than 100kg/m
31.5 to 2.5 parts of perlite, 2.5 to 3.5 parts of loess powder with the granularity of 40 meshes, 0.8 to 1.2 parts of 42.5R Portland cement, 0.05 to 0.1 part of cement additive, 0.2 to 0.5 part of organosilane powder and 0.5 to 1.0 part of ethylene-vinyl acetate copolymer emulsion rubber powder with the glass transition temperature of 17 to 19 ℃.
3. The method for preparing a loess-based fire dam fire retardant coating material as claimed in claim 1, comprising the steps of:
(1) weighing the raw materials according to the proportion;
(2) adding cement and ethylene-vinyl acetate copolymer emulsion rubber powder into a gravity-free stirrer, opening a fly cutter to avoid adhesion and prevent uneven stirring, and closing the fly cutter after stirring for 5 min; sequentially adding vermiculite, perlite and loess powder, and continuously stirring for 5 min; adding the cement admixture and the organosilane powder, and continuously stirring for 25min to obtain the cement admixture with loose volume weight of 450-500 kg/m
3The dry powder (the proportion of vermiculite and cement can be adjusted) is powder.
(3) And (3) mixing the powder mixture with clear water, and uniformly stirring to obtain thick slurry, namely the loess-based fire-proof embankment fire-proof coating.
4. The powder batch of claim 2, wherein: the loess powder is obtained by grinding clean and dry loess into loess powder of 40 meshes, roasting at 900-1000 ℃ for 2.0-3.0 h, and grinding and sieving with a sieve of 40 meshes.
5. A loess-based fire-retardant coating for a fire-proof dike.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911097289.2A CN110776772A (en) | 2019-11-11 | 2019-11-11 | Loess-based fireproof embankment fireproof coating and preparation method thereof |
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| CN201911097289.2A CN110776772A (en) | 2019-11-11 | 2019-11-11 | Loess-based fireproof embankment fireproof coating and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173120A (en) * | 2006-11-03 | 2008-05-07 | 洛阳佛尔达消防产品有限公司 | Heat-insulation fire-proof paint special for LT type fire bund and method for producing the same |
| CN106800838A (en) * | 2017-01-22 | 2017-06-06 | 北京昊天防火材料厂 | A kind of fire wall fireproof coating and its construction method |
| CN106867351A (en) * | 2017-03-17 | 2017-06-20 | 陇东学院 | Loess ecology interiro wall latex paint and preparation method thereof |
-
2019
- 2019-11-11 CN CN201911097289.2A patent/CN110776772A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173120A (en) * | 2006-11-03 | 2008-05-07 | 洛阳佛尔达消防产品有限公司 | Heat-insulation fire-proof paint special for LT type fire bund and method for producing the same |
| CN106800838A (en) * | 2017-01-22 | 2017-06-06 | 北京昊天防火材料厂 | A kind of fire wall fireproof coating and its construction method |
| CN106867351A (en) * | 2017-03-17 | 2017-06-20 | 陇东学院 | Loess ecology interiro wall latex paint and preparation method thereof |
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