CN113831828A - Antibacterial flame-retardant floor coating and preparation method thereof - Google Patents

Antibacterial flame-retardant floor coating and preparation method thereof Download PDF

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Publication number
CN113831828A
CN113831828A CN202111119877.9A CN202111119877A CN113831828A CN 113831828 A CN113831828 A CN 113831828A CN 202111119877 A CN202111119877 A CN 202111119877A CN 113831828 A CN113831828 A CN 113831828A
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component
parts
waterborne
water
antibacterial
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周慕妍
周志余
陈书新
周志茹
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Wenzhou Wurun Enterprise Management Consulting Partnership (L.P.)
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Zhejiang Runao Environmental Protection Technology Co ltd
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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
    • 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
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • 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
    • 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
    • C09D7/20—Diluents or solvents
    • 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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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Plant Pathology (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to the technical field of floor coatings, in particular to an antibacterial flame-retardant floor coating and a preparation method thereof. The terrace coating comprises a component A, a component B and a component C, wherein the component A comprises at least one of waterborne polyurethane and waterborne epoxy resin, and the component A also comprises a flame retardant; the component B is a water-based curing agent; the component C is an antibacterial agent. The terrace after coating and curing has excellent mechanical property, flame retardance and antibacterial property.

Description

Antibacterial flame-retardant floor coating and preparation method thereof
Technical Field
The invention relates to the technical field of floor coatings, in particular to an antibacterial flame-retardant floor coating and a preparation method thereof.
Background
The requirements of modern industry on the ground protection, decoration effect and environmental protection standard of the floor coating are higher and higher, if some scenes require the floor coating to have good mechanical property and high hardness strength, and some scenes require the floor coating to have excellent chemical resistance and corrosion resistance; some scenarios require safety and environmental protection. The water-based floor coating is non-combustible, non-explosive, safe, environment-friendly and non-toxic, is convenient to produce, transport, store and construct, has low requirement on the drying degree of a base material, avoids the problems frequently occurring in solvent type or solvent-free floor coatings to a great extent, and is widely applied. However, the water-based terrace has some problems to be solved, such as relatively low flame retardancy and antibacterial property.
Disclosure of Invention
In order to solve the technical problems, the invention provides an antibacterial flame-retardant floor coating, which comprises a component A, a component B and a component C, and is characterized in that:
the component A comprises resin and a flame retardant;
the component B is a water-based curing agent;
the component C is an antibacterial agent.
In some preferred embodiments, the resin comprises at least one of an aqueous polyurethane, an aqueous epoxy resin.
The invention takes water as a dispersion medium to replace solvent type polyurethane terrace paint, reduces the discharge of organic solvent and organic pollutants to the maximum extent, does not pollute the environment, saves energy, has non-inflammability and little smell, and meets the requirements of health and environmental protection. Meanwhile, the method is simple to operate and convenient to process, and the construction cost is reduced.
In some preferred embodiments, the component A comprises 50-60 parts by weight of aqueous polyurethane, 1-3 parts by weight of aqueous leveling agent, 0.1-0.5 part by weight of aqueous dispersant, 1-5 parts by weight of defoaming agent, 1-5 parts by weight of flame retardant, 0-10 parts by weight of aqueous color paste and 40-50 parts by weight of water.
In water-soluble systems, it is desirable to reduce the surface tension of the system. In some preferred embodiments, the aqueous leveling agent includes at least one of an organic silicon leveling agent, a polyether-modified organic silicon leveling agent, an acrylic leveling agent, and a fluorocarbon-based leveling agent. In the invention, the water-based leveling agent is more preferably a polyether modified organic silicon leveling agent BYK-333.
The dispersant is a surfactant which has two opposite properties of lipophilicity and hydrophilcity in a molecule. Can uniformly disperse solid particles of inorganic and organic pigments which are difficult to dissolve in liquid, and can prevent the solid particles from settling and coagulating to form the active agent required for stable suspension. In some preferred embodiments, the aqueous dispersant is available from basf under the model Dispex AA 4040.
In some preferred embodiments, the defoamer comprises a polyether defoamer, a silicone defoamerAnd at least one of a foaming agent and a polyether modified organic silicon type defoaming agent. More preferably, the defoaming agent is a silicone type defoaming agent because polydimethylsiloxane (silicone oil) is a main component of the silicone type defoaming agent. And H2Compared with common oils, the silicone oil has smaller surface tension, and is suitable for both water-based foaming systems and oil-based foaming systems. At H2In O and common oil, the silicone oil has high activity and low solubility, and the basic characteristics are stable chemical property, wide application range, low volatility, no toxicity and outstanding defoaming capability.
The flame retardant can be added to improve the flame retardance of the terrace to the maximum extent, and in some preferred embodiments, the flame retardant comprises at least one of ammonium dihydrogen phosphate, diammonium hydrogen phosphate, borax, urea phosphate, ammonium sulfate, dicyandiamide, ammonium hydrogen carbonate, sulfamate, borate and melamine.
The chlorine-based flame retardant is a common flame retardant in the prior art due to low price, but the chlorine-based flame retardant is poor in thermal stability and not environment-friendly, and in order to improve the environmental protection property of the floor and the thermal stability of the flame retardant, in some preferred embodiments, the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and bound water contained in the borax can absorb a large amount of heat, so that the stability of heat insulation and oxygen inhibition of a foam layer formed on the surface of the floor by the ammonium dihydrogen phosphate is improved. The non-combustible gas generated after the decomposition of the ammonium bicarbonate reduces the oxygen concentration and the combustible gas concentration, and improves the flame retardant capability of the flame retardant. In addition, the oxide generated after the ammonium bicarbonate is decomposed can capture free radicals in the terrace, so that the generation of molten drops in the terrace under the high-temperature condition is inhibited, and the thermal stability of the flame retardant is further improved. In some more preferred embodiments, the weight ratio of ammonium dihydrogen phosphate to borax to ammonium hydrogen carbonate is (6-10): (2-4): 1.
in some preferred embodiments, the component B is an aqueous polyurethane curing agent.
The aqueous color paste is not particularly limited and is commercially available.
In the using process, after the component A and the component B are mixed, the water-based polyurethane resin and the curing agent act to form a three-dimensional space reticular cross-linked structure, and the terrace coating film is finally formed through coating and curing. The waterborne curing agent is a waterborne polyurethane curing agent.
In some preferred embodiments, the viscosity of the aqueous polyurethane curing agent at 25 ℃ is 1500-3600 mPas. The physical change and the chemical reaction are carried out in a interweaving way in the process of curing and film forming of the water-based floor coating system. Because the water evaporation speed in the water-based terrace coating system is low, the water-based polyurethane curing agent is close to the surface of the water-based polyurethane particle to perform a curing crosslinking reaction, the water-based polyurethane curing agent is continuously evaporated along with the water and is diffused into the polyurethane dispersion particle to perform a further crosslinking curing reaction, and finally, the polyurethane dispersion particle is completely coalesced along with the evaporation of the water to form a uniform and compact cured coating. If the viscosity of the waterborne polyurethane curing agent is too low, intermolecular force between the waterborne polyurethane curing agent and the surfaces of waterborne polyurethane particles is reduced when the waterborne polyurethane curing agent and the surfaces of the waterborne polyurethane particles are close to each other, and the waterborne polyurethane curing agent is not beneficial to being diffused into polyurethane dispersion particles to carry out further crosslinking curing reaction, so that the strength of the cured terrace is reduced and the curing time of the terrace coating is prolonged. If the viscosity of the aqueous polyurethane curing agent is too high, the stirring of the mixed component A and the mixed component B is not facilitated, so that the construction efficiency is influenced.
In some preferred embodiments, the component C antibacterial agent comprises 3-5 parts of silver nitrate solution, 10-15 parts of ethanol and 40-50 parts of water in parts by weight of the antibacterial agent.
The weight parts of component A and component C are different, calculated separately for each weight part.
In some preferred embodiments, the silver nitrate solution is a 4-6% silver nitrate aqueous solution by mass fraction. With the addition of the antibacterial agent, a certain amount of silver ions can be released from the floor, and can penetrate through the cell wall of bacteria, replace the position of cations on the surface of a cell membrane and be combined with proteins or other anionic groups, so that the original biological function of cells is lost, and the antibacterial purpose is realized. Compared with the silver-loaded inorganic antibacterial material in the prior art, the antibacterial agent avoids the preparation of complex silver-loaded inorganic antibacterial material, reduces the cost, and is verified by a large number of experiments by the inventor that the silver ion concentration provided by the 4-6% silver nitrate aqueous solution is optimal, and if the mass fraction of the silver nitrate solution is low, the antibacterial effect is limited, so that the antibacterial rate of the antibacterial agent on escherichia coli, staphylococcus aureus and candida albicans can not reach more than 99.9%; and if the height is higher, the cost is increased.
The invention also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps of uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing, wherein the weight ratio of the component A to the component B to the component C is (1-3): (1-2): 1.
has the advantages that:
1. the invention provides an antibacterial flame-retardant floor coating, which takes water as a dispersion medium to replace a solvent type polyurethane floor coating, reduces the discharge of organic solvents and organic pollutants to the maximum extent, does not pollute the environment, saves energy, has non-inflammability and small smell, and meets the requirements of health and environmental protection. Meanwhile, the method is simple to operate and convenient to process, and the construction cost is reduced.
2. The flame retardant is preferably a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is (6-10): (2-4): 1, the thermal stability of the flame retardant is improved, and the flame retardance of the terrace is further improved.
3. The viscosity of the waterborne polyurethane curing agent at 25 ℃ is 1500-3600 mPa.s, which is beneficial to being diffused into polyurethane dispersion particles for further crosslinking curing reaction, and is beneficial to stirring after the component A and the component B are mixed, thereby improving the construction efficiency.
4. Compared with the silver-loaded inorganic antibacterial material in the prior art, the antibacterial agent used in the invention avoids the complicated preparation of the silver-loaded inorganic antibacterial material and reduces the cost.
Detailed Description
Examples
Example 1
Embodiment 1 provides an antibacterial flame-retardant floor coating, comprising a component A, a component B and a component C.
The component A comprises 55 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant, 5 parts of waterborne color paste and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 5%.
Embodiment 1 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
example 2
Embodiment 2 provides an antibacterial flame-retardant floor coating, which comprises a component A, a component B and a component C.
The component A comprises 50 parts by weight of waterborne polyurethane, 2 parts by weight of waterborne leveling agent, 0.3 part by weight of waterborne dispersant, 3 parts by weight of defoaming agent, 3 parts by weight of flame retardant, 5 parts by weight of waterborne color paste and 45 parts by weight of water.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 5%.
Embodiment 2 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
example 3
Embodiment 3 provides an antibacterial flame-retardant floor coating, comprising a component A, a component B and a component C.
The component A comprises 60 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant, 5 parts of waterborne color paste and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 5%.
Embodiment 3 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
example 4
Embodiment 4 provides an antibacterial flame-retardant floor coating comprising a component a, a component B and a component C.
The component A comprises 55 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant, 5 parts of waterborne color paste and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 2: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 5%.
Embodiment 4 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
example 5
Embodiment 5 provides an antibacterial flame retardant floor coating comprising component a, component B, and component C.
The component A comprises 55 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 5%.
Embodiment 5 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
example 6
Embodiment 6 provides an antibacterial flame retardant floor coating comprising component a, component B, and component C.
The component A comprises 55 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant, 5 parts of waterborne color paste and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 4%.
Embodiment 6 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
comparative example 1
Comparative example 1 provides an antibacterial flame-retardant floor coating comprising component a, component B and component C.
The component A comprises 40 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant, 5 parts of waterborne color paste and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 5%.
Comparative example 1 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
comparative example 2
Comparative example 2 provides an antibacterial flame-retardant floor coating comprising component a, component B and component C.
The component A comprises 55 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant, 5 parts of waterborne color paste and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 5%.
Comparative example 2 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 4: 1: 1.
comparative example 3
Comparative example 3 provides an antibacterial flame retardant floor coating comprising component a, component B and component C.
The component A comprises 55 parts of waterborne polyurethane, 2 parts of waterborne flatting agent, 0.3 part of waterborne dispersant, 3 parts of defoaming agent, 3 parts of flame retardant, 5 parts of waterborne color paste and 45 parts of water by weight.
The waterborne polyurethane is purchased from Anhui Dahuatai new materials Co., Ltd, and has the model of waterborne polyurethane AH-1702;
the water-based flatting agent is a polyether modified organic silicon flatting agent BYK-333;
the water-based dispersant is a water-based dispersant which is purchased from Pasteur and has the model number of Dispex AA 4040;
the defoaming agent is an organic silicon defoaming agent which is purchased from field chemistry and has the model of AT-470;
the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is 8: 3: 1;
the water-based color paste is water-based color paste carbon black purchased from national bright chemical company Limited in Quanzhou city;
the component B is a waterborne polyurethane curing agent, the viscosity at 25 ℃ is 1600-3600 mPa.s, the component B is purchased from New Material Co., Ltd, the model is waterborne curing agent A01, and the waterborne curing agent A01 is a hydrophilic polyisocyanate curing agent.
The component C comprises 4 parts of silver nitrate solution, 12 parts of ethanol and 45 parts of water in parts by weight; the silver nitrate solution is a silver nitrate water solution with the mass fraction of 3%.
Comparative example 3 also provides a preparation method of the antibacterial flame-retardant floor coating, which comprises the following steps: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is 2: 1: 1.
performance testing
The floor coatings prepared in the examples and the comparative examples are coated on the primed floor by a roller and dried for 16 hours to prepare a floor sample, and the floor sample is detected.
1. And (3) appearance detection: according to the GB/T22374-2018 detection standard, if the floor surface is flat and has no obviously visible shrinkage cavity, blooming, wrinkling, pinholes, cracking and the like, the floor is marked as qualified, otherwise, the floor is marked as unqualified. The results are shown in Table 1.
2. Pencil hardness: according to the GB/T6739-2006 detection standard, if the hardness reaches 6H, the hardness is marked as qualified, otherwise, the hardness is marked as unqualified. The results are shown in Table 1.
3. Abrasion resistance (750g/500 r): according to the GB/T22374-2018 detection standard, if the detection result is less than or equal to 0.030g, the result is marked as pass, otherwise, the result is marked as fail. The results are shown in Table 1.
4. Tensile bond strength: according to the GB/T22374-2018 detection standard, if the strength is more than or equal to 2MPa, the product is marked as qualified, otherwise, the product is marked as unqualified. The results are shown in Table 1.
5. Impact resistance (1000g steel ball): according to the GB/T22374-2018 detection standard, if the floor coating has no cracks and no peeling, the floor coating is marked as qualified, otherwise, the floor coating is marked as unqualified. The results are shown in Table 1.
6. Grip performance (dry friction coefficient): according to the GB/T4100-2015 detection standard, if the dry friction coefficient is more than or equal to 0.50, the product is qualified, otherwise, the product is unqualified. The results are shown in Table 1.
7. Water resistance (168 h): according to the GB/T22374-2018 detection standard, if the terrace has no bubbles, no peeling and no discoloration, the terrace is marked as qualified, otherwise, the terrace is marked as unqualified. The results are shown in Table 1.
8. Alkali resistance (20% NaOH, 72 h): according to the GB/T22374-2018 detection standard, if the terrace has no bubbles, no peeling and no discoloration, the terrace is marked as qualified, otherwise, the terrace is marked as unqualified. The results are shown in Table 1.
9. Acid resistance (10% H)2SO448 h): according to the GB/T22374-2018 detection standard, if the terrace has no bubbles, no peeling and no discoloration, the terrace is marked as qualified, otherwise, the terrace is marked as unqualified. The results are shown in Table 1.
10. Oil resistance (120)#Mineral spirit, 72 h): according to the GB/T22374-2018 detection standard, if the terrace has no bubbles, no peeling and no discoloration, the terrace is marked as qualified, otherwise, the terrace is marked as unqualified. The results are shown in Table 1.
11. And (3) antibacterial property: and detecting the antibacterial rate of the marked terrace sample on escherichia coli, staphylococcus aureus and candida albicans according to GB/T31402-2015, wherein the antibacterial rate is more than or equal to 99.9 percent and is marked as qualified, otherwise, the antibacterial rate is marked as unqualified. The results are shown in Table 1.
TABLE 1
Figure BDA0003276685620000111

Claims (10)

1. The antibacterial flame-retardant floor coating comprises a component A, a component B and a component C, and is characterized in that:
the component A comprises resin and a flame retardant;
the component B is a water-based curing agent;
the component C is an antibacterial agent.
2. The antibacterial flame-retardant floor coating according to claim 1, characterized in that: the resin comprises at least one of waterborne polyurethane and waterborne epoxy resin.
3. The antibacterial flame-retardant floor coating according to claim 2, characterized in that: the component A comprises, by weight, 50-60 parts of waterborne polyurethane, 1-3 parts of a waterborne leveling agent, 0.1-0.5 part of a waterborne dispersant, 1-5 parts of a defoaming agent, 1-5 parts of a flame retardant, 0-10 parts of a waterborne color paste and 40-50 parts of water.
4. The antibacterial flame-retardant floor coating according to claim 3, characterized in that: the waterborne curing agent is a waterborne polyurethane curing agent.
5. The antibacterial flame-retardant floor coating according to claim 4, characterized in that: the viscosity of the waterborne polyurethane curing agent at 25 ℃ is 1500-3600 mPas.
6. The antibacterial flame-retardant floor coating according to claim 3, characterized in that: the flame retardant comprises at least one of ammonium dihydrogen phosphate, diammonium hydrogen phosphate, borax, urea phosphate, ammonium sulfate, dicyandiamide, ammonium bicarbonate, sulfamate, borate and melamine.
7. The antibacterial flame-retardant floor coating according to claim 6, characterized in that: the flame retardant comprises a mixture of ammonium dihydrogen phosphate, borax and ammonium bicarbonate, and the weight ratio is (6-10): (2-4): 1.
8. the antibacterial flame-retardant floor coating according to claim 1, characterized in that: the antibacterial agent comprises, by weight, 3-5 parts of silver nitrate solution, 10-15 parts of ethanol and 40-50 parts of water.
9. The antibacterial flame-retardant floor coating according to claim 8, characterized in that: the silver nitrate solution is a silver nitrate water solution with the mass fraction of 4-6%.
10. A method for preparing the antibacterial flame-retardant floor coating according to any one of claims 1 to 9, which is characterized in that: uniformly mixing the raw materials of the component A, then adding the component B, uniformly mixing, and finally adding the component C, and uniformly mixing to obtain the composition, wherein the weight ratio of the component A to the component B to the component C is (1-3): (1-2): 1.
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