CN113549389A - Renewable elastic polyurethane millstone material and application thereof - Google Patents
Renewable elastic polyurethane millstone material and application thereof Download PDFInfo
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- CN113549389A CN113549389A CN202110872815.9A CN202110872815A CN113549389A CN 113549389 A CN113549389 A CN 113549389A CN 202110872815 A CN202110872815 A CN 202110872815A CN 113549389 A CN113549389 A CN 113549389A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/22—Resiliently-mounted floors, e.g. sprung floors
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- 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
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
- E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise
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Abstract
The invention discloses a renewable elastic polyurethane grindstone material and application thereof, and belongs to the technical field of building materials. The grinding stone material is prepared from the following components in percentage by mass of 3-5: the self-leveling coating is composed of 25-40% of polyol elastic polyurethane resin, 0.1-0.4% of bentonite, 40-55% of filler, 4-7% of functional auxiliary agent and 15-25% of curing agent according to mass percentage, the elastic aggregate is an irregularly-shaped elastic polyurethane resin color system sheet or fine particle, and the self-leveling coating is used for indoor public places ground of exhibition halls, medical treatment, education, office, entertainment or retail, has beautiful and comfortable visual effect, meets the use requirements of high strength, high elongation and difficult cracking, has soft elasticity and sound insulation and noise reduction functions, realizes a reproducible effect, is convenient to construct and maintain later, and is environment-friendly and safe.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a renewable elastic polyurethane grindstone material and application thereof.
Background
The terrace refers to a ground which is constructed and treated by using specific materials and processes and shows certain decoration and functionality on the original ground, such as an epoxy self-leveling terrace, a carborundum wear-resistant terrace, an epoxy terrazzo terrace, a cement-based terrazzo, an epoxy colored sand terrace, an epoxy anti-static terrace, an epoxy anti-slip terrace, a polyurea anti-corrosion terrace, a polyurethane terrace, a silicon PU terrace, a concrete sealing curing agent terrace and the like. The terrazzo floor is one kind of floor, and is made up by mixing aggregate of broken stone, glass and quartz stone with cement adhesive, grinding and polishing the surface of concrete product, and the terrazzo made of cement adhesive is called inorganic terrazzo, and the terrazzo made of epoxy adhesive is called epoxy terrazzo or organic terrazzo, and according to the construction and making process, the terrazzo floor is cast in situ with terrazzo and prefabricated plate terrazzo floor.
However, the above-mentioned terrazzo terrace that is generally used has the following problems:
(1) the substrate material is generally rigid cement or thermosetting epoxy resin, the rigidity/brittleness of the material is high, and the cracking problem is easily caused by environmental change and uneven stress;
(2) the hardness is high, the comfort experience feeling is influenced due to poor flexibility in indoor public places, and noise pollution is easily caused;
(3) the construction is difficult and non-renewable, and is not suitable for indoor entertainment places with strong design sense and high updating speed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention mainly aims to provide a renewable elastic polyurethane millstone material, which is prepared by replacing the traditional inorganic terrazzo with elastic aggregate made of elastic polyurethane, combining the appearance of the millstone with the appearance of the special design and compounding with the polyol elastic polyurethane self-leveling coating to be used for the ground in indoor public places, meets the use requirements of high strength, high elongation and difficult cracking, has the functions of soft elasticity, sound insulation and noise reduction, and realizes the regeneration effect.
Another object of the present invention is to provide the use of the above-mentioned renewable elastic polyurethane grindstone material in the floors of medical, educational, office, entertainment, retail indoor public places.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a renewable elastic polyurethane millstone material which is prepared from the following components in parts by mass of 3-5: 1, the polyol elastic polyurethane self-leveling coating A and elastic aggregate, wherein the solid content is 100%; wherein:
the polyol elastic polyurethane self-leveling coating A consists of 25-40% of polyol elastic polyurethane resin, 0.1-0.4% of bentonite, 40-55% of filler, 4-7% of functional additive and 15-25% of curing agent in percentage by mass; wherein:
the functional auxiliary agent is prepared from the following components in percentage by mass of 1: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer;
the polyol elastic polyurethane resin consists of 40-45% of plant polyol, 40-45% of diisocyanate and 10-20% of pigment in percentage by mass;
the elastic aggregate is a sheet or fine particle with an irregular shape and is selected from one or more than two of elastic polyurethane resin color systems.
Preferably, the volume ratio of the polyol elastic polyurethane self-leveling coating A to the elastic aggregate is 0.5-1: 1.
more preferably, the volume ratio of the polyol elastic polyurethane self-leveling coating A to the elastic aggregate is 0.8125: 1, the mass ratio is 4: 1.
preferably, the bentonite has a montmorillonite mass percentage content of more than 60% and an average particle size of less than 0.07 mm.
Preferably, the filler is selected from one or a combination of more than two of heavy calcium carbonate, light calcium carbonate, talcum powder, wollastonite, kaolin, barite or mica powder, and the average particle size is 0.1-1 um.
The invention also provides application of the renewable elastic polyurethane millstone material in indoor public places and floors of exhibition halls, medical treatment, education, office, entertainment or retail.
Preferably, the floor of the indoor public place sequentially comprises an elastic polyurethane substrate layer, an elastic polyurethane millstone self-leveling layer and a water-based polyurethane transparent high-gloss finish coat from inside to outside; wherein:
the dosage of the elastic polyurethane basal layer is 0.3-0.5 kg/m2The elastic polyurethane coating is obtained by blade coating or tape casting of a polyol elastic polyurethane primer, wherein the polyol elastic polyurethane primer consists of 50-70% of polyol elastic polyurethane resin, 15-25% of water and 15-25% of a curing agent in percentage by mass;
the thickness of the elastic polyurethane millstone self-leveling layer is 5-15 mm, and the density is 0.6-1.3 kg/m2Thickness of the coating is 3-20kg/m2The material is obtained by adopting the renewable elastic polyurethane millstone material of any one of claims 1 to 5 through tape casting;
the dosage of the water-based polyurethane transparent high-gloss finish coat is 0.03-0.06kg/m2The waterborne polyurethane transparent high-gloss surface coating is obtained by blade coating or tape casting, and consists of 35-55% of aliphatic waterborne polyurethane resin, 1-2% of functional additives, 15-25% of curing agent and 29-38% of deionized water in percentage by mass, wherein the functional additives are prepared from the following components in percentage by mass: 1: 1: 1 leveling agent, defoaming agent, wetting agent and foam stabilizer.
Preferably, the elastic polyurethane particle leveling layer is arranged between the elastic polyurethane substrate layer and the elastic polyurethane grindstone self-leveling layer, the thickness of the elastic polyurethane particle leveling layer is more than 5mm, and the density of the elastic polyurethane particle leveling layer is 0.6-1.3 kg/m2Thickness of 1-30kg/m2The self-leveling coating B is prepared by tape casting of a polyol elastic polyurethane self-leveling coating B, wherein the polyol elastic polyurethane self-leveling coating B is composed of 47-60% of polyol elastic polyurethane resin, 0.2-0.5% of bentonite, 15-25% of filler, 3-6% of functional additive and 15-25% of curing agent in percentage by mass, and the functional additive is prepared from the following components in percentage by mass: 1: 1: 1 levelingAgent, defoaming agent, wetting agent and foam stabilizer.
Preferably, the indoor public place floor is obtained by a construction method including the following steps (a) to (d):
(a) after the surface of the decoration foundation is ground and cleaned, the polyol elastic polyurethane primer is subjected to blade coating or tape casting to obtain an elastic polyurethane substrate layer;
(b) carrying out tape casting on the surface of the elastic polyurethane substrate layer in the step (a) by using the polyol elastic polyurethane self-leveling coating B to obtain an elastic polyurethane particle leveling layer;
(c) after the surface grinding and cleaning treatment are carried out on the elastic polyurethane particle leveling layer in the step (b), the surface of the elastic polyurethane particle leveling layer is subjected to tape casting molding by using the renewable elastic polyurethane grindstone material to obtain an elastic polyurethane grindstone self-leveling layer;
(d) and (c) after the surface grinding and cleaning treatment is carried out on the elastic polyurethane millstone self-leveling layer in the step (c), blade coating or tape casting forming is carried out on the surface of the elastic polyurethane millstone self-leveling layer by using the waterborne polyurethane transparent high-gloss finish coating to obtain the waterborne polyurethane transparent high-gloss finish coating, and the surface cleaning and polishing treatment are carried out to obtain the elastic polyurethane millstone self-leveling layer.
Compared with the prior art, the invention has the beneficial effects that:
(1) the renewable elastic polyurethane millstone material consists of the polyol elastic polyurethane self-leveling coating and the elastic aggregate with irregular shape, and has the following performance advantages: elastic mute noise reduction; seamless cracking resistance; good physical and chemical resistance; no solvent and environmental protection; the service life is long; good adhesive force and strength; the anti-skid and wear-resistant effects are achieved; the ground powder can be recycled in the construction process without affecting the product quality.
(2) The elastic aggregate made of the elastic polyurethane material replaces the traditional inorganic terrazzo, the uniquely designed appearance of the terrazzo is combined with the polyol elastic polyurethane self-leveling coating to be compounded, the flexible sound-insulation seamless noise-reduction terrace system is used for floors of indoor public places such as medical treatment, education, office, entertainment and retail, is a soft noise-reduction terrace system which has sound insulation and no seam and accords with human engineering, has attractive and comfortable visual effect, meets the use requirements of high strength, high elongation and difficult cracking, has the functions of soft elasticity and sound insulation and noise reduction, realizes the reproducible effect, is convenient to construct and maintain at the later stage, and is environment-friendly and safe.
(3) The renewable elastic polyurethane grindstone material is used for floor fire prevention and flame retardance of indoor public places to reach B1 level, and the critical heat radiation flux CHF is not lower than 9.4Kw/m2(Standard requirement is greater than 8.0 Kw/m)2) The smoke yield is less than 147.2 percent multiplied by min (standard requirement is less than 750 percent multiplied by min), the combustible value is 20s, and the height of the flame tip is less than 120Fs (mm) (standard requirement is less than 150Fs (mm)).
The above-described and other features, aspects, and advantages of the present invention will become more apparent with reference to the following detailed description.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a map of the appearance and appearance of the ground in an indoor public place made of a renewable elastic polyurethane millstone material in the invention; wherein, the coating comprises a 1-elastic polyurethane substrate layer, a 2-elastic polyurethane particle leveling layer and a 3-elastic polyurethane grindstone self-leveling layer;
FIG. 2 is a graph of the appearance of a renewable elastic polyurethane grindstone material of different elastic aggregate grindstone appearances;
fig. 3 is a construction effect diagram of the indoor public place ground, an office place (upper) and a medical place (lower) in the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
The polyol elastomeric polyurethane resin used in the following examples is composed of, by mass, 40% to 45% of a plant polyol, 40% to 45% of a diisocyanate, and 10% to 20% of a pigment. The renewable elastic polyurethane millstone material is used for preparing floors of indoor public places such as exhibition halls, medical treatment, education, office, entertainment or retail, and sequentially comprises an elastic polyurethane substrate layer, an elastic polyurethane millstone self-leveling layer and a waterborne polyurethane transparent high-gloss finish coat from inside to outside; wherein:
the dosage of the elastic polyurethane basal layer is 0.3-0.5 kg/m2The elastic polyurethane primer is obtained by blade coating or tape casting of a polyol elastic polyurethane primer, wherein the polyol elastic polyurethane primer consists of 50-70% of polyol elastic polyurethane resin, 15-25% of water and 15-25% of a curing agent in percentage by mass;
the thickness of the elastic polyurethane particle leveling layer is more than 5mm, and the density is 0.6-1.3 kg/m2Thickness of 1-30kg/m2The self-leveling polyurethane coating is prepared by tape casting of a polyol elastic polyurethane self-leveling coating B, wherein the polyol elastic polyurethane self-leveling coating B is prepared from 47-60% of polyol elastic polyurethane resin, 0.2-0.5% of bentonite, 15-25% of filler, 3-6% of functional additive and 15-25% of curing agent in percentage by mass, and the functional additive is prepared from the following components in percentage by mass: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer;
the thickness of the elastic polyurethane millstone self-leveling layer is 5-15 mm, and the density is 0.6-1.3 kg/m2Thickness of the coating is 3-20kg/m2The material is obtained by casting any renewable elastic polyurethane millstone material;
the dosage of the water-based polyurethane transparent high-gloss finishing coat is 0.03-0.06kg/m2The waterborne polyurethane transparent high-gloss surface coating is obtained by blade coating or tape casting, and consists of 35-55% of aliphatic waterborne polyurethane resin, 1-2% of functional additives, 15-25% of curing agent and 29-38% of deionized water in percentage by mass, wherein the functional additives are prepared from the following components in percentage by mass: 1: 1: 1 leveling agent, defoaming agent, wetting agent and foam stabilizer.
The indoor public place ground is obtained by a construction method comprising the following steps (a) to (d):
(a) after the surface of the decoration foundation is ground and cleaned, carrying out blade coating or tape casting on a polyol elastic polyurethane primer to obtain an elastic polyurethane substrate layer;
(b) carrying out tape casting on the surface of the elastic polyurethane substrate layer in the step (a) by using a polyol elastic polyurethane self-leveling coating B to obtain an elastic polyurethane particle leveling layer;
(c) after the surface grinding and cleaning treatment of the elastic polyurethane particle leveling layer in the step (b), carrying out tape casting molding on the surface of the elastic polyurethane particle leveling layer by using a renewable elastic polyurethane grindstone material to obtain an elastic polyurethane grindstone self-leveling layer;
(d) and (c) after the surface grinding and cleaning treatment is carried out on the elastic polyurethane millstone self-leveling layer in the step (c), blade coating or tape casting is carried out on the surface of the elastic polyurethane millstone self-leveling layer by using the waterborne polyurethane transparent high-gloss finish coating to obtain the waterborne polyurethane transparent high-gloss finish coating, and the surface cleaning and polishing treatment are carried out to obtain the waterborne polyurethane transparent high-gloss finish coating.
In some embodiments, the volume ratio of coating material to elastic aggregate is 0.8125: 1, the mass ratio is 4: 1; in some embodiments, the bentonite has a smectite mass percent of greater than 60% and an average particle size of less than 0.07 mm; in some embodiments, the filler is selected from one or a combination of more than two of heavy calcium carbonate, light calcium carbonate, talcum powder, wollastonite, kaolin, barite or mica powder, and has an average particle size of 0.1-1 um.
The technical solution of the present invention is further explained by the following specific examples.
Example 1
The polyol elastic polyurethane resin used in the present embodiment is composed of 40% by mass of a plant polyol, 40% by mass of a diisocyanate, and 20% by mass of a pigment, and the method for preparing the floor of the public place in the exhibition hall by using the renewable elastic polyurethane grindstone material is the same as above. The floor of the public place in the exhibition hall is sequentially provided with an elastic polyurethane basal layer, an elastic polyurethane particle leveling layer, an elastic polyurethane grindstone self-leveling layer and a water-based polyurethane transparent high-gloss finish coat from inside to outside; wherein:
elastic polyurethane base layerIs obtained by blade coating or tape casting of polyol elastic polyurethane primer, and the using amount is 0.3kg/m2The polyol elastic polyurethane primer consists of 50 percent of polyol elastic polyurethane resin, 25 percent of water and 25 percent of curing agent;
the thickness of the elastic polyurethane particle leveling layer is more than 5mm, and the density is 0.6kg/m2Thickness of 1-30kg/m2The polyurethane self-leveling coating is prepared by tape casting of a polyol elastic polyurethane self-leveling coating B, wherein the polyol elastic polyurethane self-leveling coating B is prepared from 55% of elastic polyurethane resin, 0.5% of bentonite, 15% of filler, 4.5% of functional additive and 25% of curing agent, and the functional additive is prepared from the following components in percentage by mass of 1: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer;
the thickness of the elastic polyurethane millstone self-leveling layer is 5mm, and the density is 0.6kg/m2Thickness of 3kg/m2The mass ratio of the components is 4: the renewable elastic polyurethane millstone material consisting of the polyol elastic polyurethane self-leveling coating A and the elastic aggregate is obtained by tape casting, wherein the solid content of the polyol elastic polyurethane self-leveling coating A is 100 percent, and the polyol elastic polyurethane self-leveling coating A consists of 40 percent of polyol elastic polyurethane resin, 0.1 percent of bentonite, 40 percent of filler, 4.9 percent of functional additive and 15 percent of curing agent, wherein the functional additive is prepared by mixing the following components in percentage by mass: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer; the elastic aggregate is a sheet material with an irregular shape and is obtained by grinding elastic polyurethane resin with more than three colors; the mass percentage content of montmorillonite of bentonite is more than 60 percent, and the average particle size is less than 0.07 mm; the filler is a mixture of heavy calcium carbonate and light calcium carbonate with the average particle size of 0.1-1 um;
the dosage of the water-based polyurethane transparent highlight finish coat is 0.03kg/m2The water-based polyurethane transparent high-gloss surface coating is obtained by blade coating or tape casting, and consists of 40% of aliphatic water-based polyurethane resin, 1% of functional auxiliary agent, 25% of curing agent and 34% of deionized water, wherein the functional auxiliary agent is prepared from the following components in percentage by mass: 1: 1: 1 leveling agent, defoaming agent, wetting agent and foam stabilizer.
Example 2
The polyol elastic polyurethane resin used in the present embodiment is composed of 45% by mass of a plant polyol, 45% by mass of a diisocyanate, and 10% by mass of a pigment, and the method for preparing the floor of the office indoor public place by using the renewable elastic polyurethane grindstone material is the same as above. The ground of the public place in the office is sequentially provided with an elastic polyurethane basal layer, an elastic polyurethane particle leveling layer, an elastic polyurethane grindstone self-leveling layer and a water-based polyurethane transparent high-gloss finish coat from inside to outside; wherein:
the dosage of the elastic polyurethane basal layer is 0.4kg/m2The elastic polyurethane primer is obtained by blade coating or tape casting of a polyol elastic polyurethane primer, wherein the polyol elastic polyurethane primer consists of 60% of polyol elastic polyurethane resin, 20% of water and 20% of a curing agent;
the thickness of the elastic polyurethane particle leveling layer is more than 5mm, and the density is 1.3kg/m2Thickness of 1-30kg/m2The polyurethane self-leveling coating is prepared by tape casting of a polyol elastic polyurethane self-leveling coating B, wherein the polyol elastic polyurethane self-leveling coating B is prepared from 55% of elastic polyurethane resin, 0.5% of bentonite, 20% of filler, 4.5% of functional additive and 20% of curing agent, and the functional additive is prepared from the following components in percentage by mass of 1: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer;
the thickness of the elastic polyurethane millstone self-leveling layer is 10mm, and the density is 1.3kg/m2Thickness of each mm, the dosage is 13kg/m2The mass ratio of the components is 4: the renewable elastic polyurethane millstone material consisting of the polyol elastic polyurethane self-leveling coating A and the elastic aggregate is obtained by tape casting, wherein the solid content of the polyol elastic polyurethane self-leveling coating A is 100 percent, and the polyol elastic polyurethane self-leveling coating A consists of 35 percent of polyol elastic polyurethane resin, 0.4 percent of bentonite, 38 percent of filler, 6.6 percent of functional additive and 20 percent of curing agent, and the functional additive consists of components in percentage by mass of 1: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer; the elastic aggregate is fine particles with irregular shapes and is obtained by grinding elastic polyurethane resin with more than three colors; the mass percentage content of montmorillonite of bentonite is more than 60 percent, and the average particle size is less than 0.07 mm; the filler is talcum powder with the average particle size of 0.1-1 um;
aqueous polyurethaneThe dosage of the ester transparent high-gloss finish coat is 0.05kg/m2The waterborne polyurethane transparent high-gloss surface coating is obtained by blade coating or tape casting, and consists of 40% of aliphatic waterborne polyurethane resin, 1.5% of functional additives, 21% of curing agent and 37.5% of deionized water, wherein the functional additives are prepared from the following components in percentage by mass: 1: 1: 1 leveling agent, defoaming agent, wetting agent and foam stabilizer.
Example 3
The polyol elastic polyurethane resin adopted in the embodiment consists of 42% of plant polyol, 42% of diisocyanate and 16% of pigment in percentage by mass, and the method for preparing the ground of the medical indoor public place by using the renewable elastic polyurethane millstone material is the same as the above. The ground of the public place in the medical room is sequentially provided with an elastic polyurethane substrate layer, an elastic polyurethane particle leveling layer, an elastic polyurethane grindstone self-leveling layer and a water-based polyurethane transparent high-gloss finish coat from inside to outside; wherein:
the dosage of the elastic polyurethane basal layer is 0.5kg/m2The polyurethane coating is obtained by blade coating or tape casting of a polyol elastic polyurethane primer, wherein the polyol elastic polyurethane primer consists of 70% of polyol elastic polyurethane resin, 15% of water and 15% of a curing agent;
the thickness of the elastic polyurethane particle leveling layer is more than 5mm, and the density is 1kg/m2Thickness of 1-30kg/m2The polyurethane self-leveling coating is prepared by tape casting of a polyol elastic polyurethane self-leveling coating B, wherein the polyol elastic polyurethane self-leveling coating B is prepared from 60% of elastic polyurethane resin, 0.5% of bentonite, 4.5% of functional additive, 15% of filler and 20% of curing agent, and the functional additive is prepared from the following components in percentage by mass of 1: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer;
the thickness of the elastic polyurethane millstone self-leveling layer is 15mm, and the density is 1kg/m2Thickness of each mm, the dosage is 15kg/m2The material is prepared by adopting the material of the renewable elastic polyurethane grindstone through casting molding, and the renewable elastic polyurethane grindstone material is prepared from the following components in percentage by mass of 4: 1 and elastic aggregate, wherein the solid content of the polyol elastic polyurethane self-leveling coating A is 100 percentThe polyurethane adhesive consists of 38 percent of polyol elastic polyurethane resin, 0.4 percent of bentonite, 40 percent of filler, 6.6 percent of functional additive and 15 percent of curing agent, wherein the functional additive is prepared from the following components in percentage by mass of 1: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer; the elastic aggregate is fine particles with irregular shapes and is obtained by grinding elastic polyurethane resin with more than three colors; the mass percentage content of montmorillonite of bentonite is more than 60 percent, and the average particle size is less than 0.07 mm; the filler is mica powder with the average particle size of 0.1-1 um;
the dosage of the water-based polyurethane transparent highlight finish coat is 0.06kg/m2The waterborne polyurethane transparent high-gloss surface coating is obtained by blade coating or tape casting, and consists of 50% of aliphatic waterborne polyurethane resin, 2% of functional additives, 18% of curing agent and 30% of deionized water, wherein the functional additives are prepared from the following components in percentage by mass: 1: 1: 1 leveling agent, defoaming agent, wetting agent and foam stabilizer.
Tests show that the fire resistance and flame retardance of the indoor public place floor prepared in the above examples 1 to 3 reach B1 level, and the critical heat radiation flux CHF is not lower than 9.4Kw/m2(Standard requirement is greater than 8.0 Kw/m)2) The smoke yield is less than 147.2 percent multiplied by min (standard requirement is less than 750 percent multiplied by min), the combustible value is 20s, and the height of the flame tip is less than 120Fs (mm) (standard requirement is less than 150Fs (mm)).
Other performance tests were performed on the indoor public place floor prepared in examples 1 to 3 described above, and comparative example 1 (epoxy-based grindstone floor) and comparative example 2 (cement-based grindstone floor), and the results are shown in table 1.
TABLE 1
Claims (9)
1. A renewable elastic polyurethane millstone material is characterized by comprising the following components in percentage by mass of 3-5: 1, the polyol elastic polyurethane self-leveling coating A and elastic aggregate, wherein the solid content is 100%; wherein:
the polyol elastic polyurethane self-leveling coating A consists of 25-40% of polyol elastic polyurethane resin, 0.1-0.4% of bentonite, 40-55% of filler, 4-7% of functional additive and 15-25% of curing agent in percentage by mass; wherein the content of the first and second substances,
the functional auxiliary agent is prepared from the following components in percentage by mass of 1: 1: 1: 1, leveling agent, defoaming agent, wetting agent and foam stabilizer;
the polyol elastic polyurethane resin consists of 40-45% of plant polyol, 40-45% of diisocyanate and 10-20% of pigment in percentage by mass;
the elastic aggregate is a sheet or fine particle with an irregular shape and is selected from one or more than two of elastic polyurethane resin color systems.
2. The renewable elastic polyurethane millstone material as claimed in claim 1, wherein the volume ratio of the polyol elastic polyurethane self-leveling coating material A to the elastic aggregate is 0.5-1: 1.
3. the renewable elastic polyurethane millstone material of claim 2, wherein the volume ratio of the polyol elastic polyurethane self-leveling coating A to the elastic aggregate is 0.8125: 1, the mass ratio is 4: 1.
4. the renewable elastic polyurethane millstone material of claim 1, wherein the bentonite has a montmorillonite mass percent content of greater than 60% and an average particle size of less than 0.07 mm.
5. The renewable elastic polyurethane millstone material as claimed in claim 1, wherein the filler is selected from one or a combination of more than two of heavy calcium carbonate, light calcium carbonate, talcum powder, wollastonite, kaolin, barite or mica powder, and the average particle size is 0.1-1 um.
6. Use of the renewable elastic polyurethane grindstone material according to any one of claims 1 to 5 in indoor public places floors for exhibition halls, medical treatment, education, office, entertainment, or retail.
7. The use of claim 6, wherein the indoor public place floor comprises an elastic polyurethane substrate layer, an elastic polyurethane grindstone self-leveling layer and a water-based polyurethane transparent high-gloss finish coat in sequence from inside to outside; wherein:
the dosage of the elastic polyurethane basal layer is 0.3-0.5 kg/m2The elastic polyurethane coating is obtained by blade coating or tape casting of a polyol elastic polyurethane primer, wherein the polyol elastic polyurethane primer consists of 50-70% of polyol elastic polyurethane resin, 15-25% of water and 15-25% of a curing agent in percentage by mass;
the thickness of the elastic polyurethane millstone self-leveling layer is 5-15 mm, and the density is 0.6-1.3 kg/m2Thickness of the coating is 3-20kg/m2The material is obtained by adopting the renewable elastic polyurethane millstone material of any one of claims 1 to 5 through tape casting;
the dosage of the water-based polyurethane transparent high-gloss finish coat is 0.03-0.06kg/m2The waterborne polyurethane transparent high-gloss surface coating is obtained by blade coating or tape casting, and consists of 35-55% of aliphatic waterborne polyurethane resin, 1-2% of functional additives, 15-25% of curing agent and 29-38% of deionized water in percentage by mass, wherein the functional additives are prepared from the following components in percentage by mass: 1: 1: 1 leveling agent, defoaming agent, wetting agent and foam stabilizer.
8. The use according to claim 6, wherein the elastic polyurethane particle leveling layer is arranged between the elastic polyurethane substrate layer and the elastic polyurethane grindstone self-leveling layer, and the density of the elastic polyurethane particle leveling layer is 0.6-1.3 kg/m2Thickness of 1-30kg/m2The self-leveling coating B is prepared by tape casting of a polyol elastic polyurethane self-leveling coating B, wherein the polyol elastic polyurethane self-leveling coating B comprises 47-60% of polyol elastic polyurethane resin, 0.2-0.5% of bentonite, 15-25% of filler, 3-6% of functional additive and 15-25% ofThe curing agent is composed of a curing agent, wherein the functional auxiliary agent is prepared from the following components in a mass ratio of 1: 1: 1: 1 leveling agent, defoaming agent, wetting agent and foam stabilizer.
9. Use according to claim 6, wherein the indoor public space floor is obtained by a construction method comprising the following steps (a) to (d):
(a) after the surface of the decoration foundation is ground and cleaned, the polyol elastic polyurethane primer is subjected to blade coating or tape casting to obtain an elastic polyurethane substrate layer;
(b) carrying out tape casting on the surface of the elastic polyurethane substrate layer in the step (a) by using the polyol elastic polyurethane self-leveling coating B to obtain an elastic polyurethane particle leveling layer;
(c) after the surface grinding and cleaning treatment are carried out on the elastic polyurethane particle leveling layer in the step (b), the surface of the elastic polyurethane particle leveling layer is subjected to tape casting molding by using the renewable elastic polyurethane grindstone material to obtain an elastic polyurethane grindstone self-leveling layer;
(d) and (c) after the surface grinding and cleaning treatment is carried out on the elastic polyurethane millstone self-leveling layer in the step (c), blade coating or tape casting forming is carried out on the surface of the elastic polyurethane millstone self-leveling layer by using the waterborne polyurethane transparent high-gloss finish coating to obtain the waterborne polyurethane transparent high-gloss finish coating, and the surface cleaning and polishing treatment are carried out to obtain the elastic polyurethane millstone self-leveling layer.
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