CN107163701A - A kind of modified fireproof coating - Google Patents
A kind of modified fireproof coating Download PDFInfo
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- CN107163701A CN107163701A CN201710375380.0A CN201710375380A CN107163701A CN 107163701 A CN107163701 A CN 107163701A CN 201710375380 A CN201710375380 A CN 201710375380A CN 107163701 A CN107163701 A CN 107163701A
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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
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- 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
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34922—Melamine; Derivatives thereof
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/28—Glass
Abstract
The present invention relates to a kind of modified fireproof coating, modified fireproof coating fraction proportioning by weight of the invention is made up of following components：Film forming agent：8 25 parts；Inorganic hollow filler：0.5 5 parts；Acid donors：5 36 parts；Carbon donor：2 28 parts；Foaming agent：1 21 parts；Synergist：18 parts；Melamine：10 20 parts；Deionized water：20 40 parts；Talcum powder：2 10 parts；Sodium metasilicate：5 20 parts；Titanium dioxide：5 10 parts；Expanded vermiculite：15 parts；Pentaerythrite：15 parts；Mica powder：1 10 parts.The advantage of the invention is that：The adhesive force of fireproof coating in the present invention is less than 1 grade, and adhesive strength is significantly improved；Fireproof coating is in the fire resistance period at a high temperature of 800 DEG C between 30 35min, and resistance to elevated temperatures is remarkably reinforced, to succour and fire extinguishing wins more quality time；Production cost is low, and preparation method is simple.
Description
Technical field
The present invention relates to a kind of coating, more particularly to a kind of modified fireproof coating.
Background technology
Steel do not possess combustibility, but the thermal conductivity factor of steel is big, and normal temperature thermal conductivity factor reaches 58.2W/mK.Meet fire or
When heat temperature reaches 500 DEG C or so, modulus of elasticity, yield strength and the ultimate strength of steel will be significantly reduced, and strain is drastically
Increase, causes its rapid torsional deformation, causes the part or all of collapse breaks of steel construction.Experiment shows, steel have it is heat-resisting and
The characteristic of non-refractory, and with the rise of temperature, the intensity of steel can be reduced gradually.Such as in the presence of fire, steel construction
When member temperature reaches 350 DEG C, 500 DEG C, 600 DEG C, intensity declines 1/3,1/2 and 2/3 respectively.When temperature once reaches 500 DEG C
More than, steel structure member will occur to soften and cause to build instantaneously collapse and collapse.And it is coated in the intumescent of steel structure surface
Fireproof coating can extend the supporting time of steel building in fire, be that people win the time for withdrawing scene of fire.
Fire-resistant coating for steel structure till now, can be classified with different methods to it：Enter from dispersion used
Row classification, can be divided into water-soluble and solvent-borne type；Classified from fire prevention form, intumescent and non-expansion type can be divided into；In application
In scope, classification locellus external form and indoor type are carried out；Classify from thickness, be divided into thick coated type, scumbling type and ultrathin type.Often at present
Thick coated type and scumbling type coating are water-soluble mostly in kind, and ultrathin type has water-soluble and the class of solvent-borne type two.Scumbling type
It is essentially all intumescent with ultrathin type, thick coated type is non-expansion type.
In recent years, with the continuous enhancing of people's environmental consciousness, aqueous fire-proof coating is of increased attention.Water
Property fireproof coating makees solvent with water, therefore price is low compared with oiliness fireproof coating and reduces pollution to air；Water paint
Only with a small amount of or do not use organic solvent, improve operating environment, meanwhile, in reduction pollution, save resource in terms of effect
Fruit is also than more significant；Water-borne coating adhesive force is strong, and the adaptability to material surface is also relatively good；Water paint construction application
Instrument can wash by water, so as to reduce the consumption of cleaning solvent；The flattening of aqueous fire-proof coating is good, in inner chamber, weld seam, rib
The positions such as angle, seamed edge can be constructed, with good protective.
The fire-retardant principle of aqueous fire-proof coating is as follows：(1) itself has flame retardancy or noninflammability., can after coating chance fire is heated
To absorb amount of heat by chemical actions such as the decomposition and charing of the components such as physical change and polymer such as melting, expansion,
Offset a part and act on the heat of object, so as to delay the heated temperature-rise period of base material；(2) meet fire it is heated decomposite it is non-flammable
Inert gas, waters down the oxygen in the inflammable gas and air decomposited by protection base material heated, suppresses burning；(3) heat is released
Put living radical.The living radical can slow down after being combined with organic free radical or terminate combustion chain reaction；(4) heat is swollen
It is swollen, form the foamed char of heat-insulated oxygen barrier, closed substrate, so as to prevent base material ignition.
The fire resistance of traditional expanding fire-proof paint is general to be realized or reinforcement by adding halogen material.In coating
Halogen compounds, can decomposite hydrogen halides at high temperature, and hydrogen halides can catch organic matter and be decomposited in heated oxidizing fire
Hydroxyl radical free radical, terminate chain reaction, so as to prevent the generation of flaming combustion.Non-combustible gas hydrogen halides can be with simultaneously
The concentration of oxygen in the concentration and air of fuel gas is reduced, the reaction of flaming combustion is also inhibits.
Halogen fire proofing is used in fireproof coating, biggest advantage is exactly that consumption is few, flame retarding efficiency is high and wide adaptability.
It is exactly, once occurring fire, substantial amounts of smog to be produced and poisonous due to thermally decomposing and burning but it is there is also serious shortcoming
Corrosive gas so that hinder fire fighting and evacuating personnel, while corrode instrument and equipment.Particularly it is found that in fire
Death by accident has 80% above is what the dense smoke and toxic gas that material is produced were caused.Therefore, halogen-free flameproof fire proofing material is obtained
Increasing attention, it is desirable to replace these halogen materials by zero halogen alternatives.
Patent CN102675992B describes one kind with styrene-acrylic emulsion, APP, pentaerythrite, melamine, titanium white
Powder, aluminium hydroxide, Firebrake ZB, chlorinated paraffin, anticorrosion and bactericidal agent, dispersant, coalescents, cellulose ether, hydroxy silicon oil and water
The expanded water-based facing fire retardant coating prepared.In water soak 72 hours, do not ftracture, it is non-foaming, do not fall off, fire resistance period is
40min.But the fireproof coating fire resistance period is shorter, reason is that the expansion charcoal produced in fire lacks intensity and durability.This
A little factors limit the degree of protection to base material.
Presence in view of the above problems is necessary to develop a kind of fire prevention for the expansion charcoal intensity and durability having well
Coating, to extend the fire resistance period of fire resistant coating.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of modified fireproof coating, applied with solving fire prevention in the prior art
The intensity of material expansion charcoal in use is small, the problem of poor durability.
In order to solve the above technical problems, the technical scheme is that：A kind of modified fireproof coating, its innovative point exists
In：Fraction proportioning by weight is made up of following components：
Film forming agent：8-25 parts；
Inorganic hollow filler：0.5-5 parts；
Acid donors：5-36 parts；
Carbon donor：2-28 parts；
Foaming agent：1-21 parts；
Synergist：1-8 parts；
Melamine：10-20 parts；
Deionized water：20-40 parts；
Talcum powder：2-10 parts；
Sodium metasilicate：5-20 parts；
Titanium dioxide：5-10 parts；
Expanded vermiculite：1-5 parts；
Pentaerythrite：1-5 parts；
Mica powder：1-10 parts.
Further, the inorganic hollow filler is selected from hollow glass bead, hollow glass fibre and alumina hollow ball group
Into group in one or more.
Further, the synergist is selected from metal oxide and/or mineral fibres, metal oxide and mineral fibres
Weight ratio is 0.2~1.
Further, the film forming agent is selected from vinyl acetate-tertiary ethylene carbonate polymerized emulsion, polyvinyl acetate breast
Liquid, styrene-acrylate emulsion, organosilicon-modified acrylate emulsion, Polystyrene emulsion, pure-acrylic emulsion, poly- third
One or more in the group of olefin(e) acid ester emulsion, water soluble amino resin and water soluble phenol resin composition.
Further, the acid donors are selected from APP, ammonium hydrogen carbonate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate and formic acid
One or more in the group of composition.
Further, the carbon donor is selected from pentaerythrite, dipentaerythritol, sorbierite, erythrol, starch, hexamethylene six
One or more in the group of alcohol and maltose composition.
Further, the foaming agent is selected from melamine, dicyandiamide, polyamide, melamine, polyureas, guanidine, glycine and urine
One or more in the group of element composition.
The advantage of the invention is that：Apply the technical scheme of the present invention, film forming agent, acid donors, carbon donor, foaming agent and
Inorganic hollow filler, metal oxide and/or mineral fibres are added on the basis of solvent.Inorganic hollow filler has less biography
Coefficient is led, the thermal conductivity of fireproof coating can be effectively reduced, so as to be conducive to improving the fire resistance and flame retarding efficiency of fireproof coating.
More particularly, because metal oxide and/or mineral fibres can strengthen Char Residues Structure, while film forming agent can promote height
Molecular compound Plastic Flow and elastic deformation, improve the membrane formation mechanism of coalescence performance and emulsion, promote fireproof coating formation to connect
Continuous property film, thus film forming agent and metal oxide and/or inorganic hollow filler be used in conjunction with can effectively improve fire prevention and apply
Expect the toughness and mechanical strength of coating, so that be conducive to improving the three-D space structure foamed char of above-mentioned fireproof system formation
Intensity and burn-through resistance, and then be conducive to extending the fire resistance period of fireproof coating.In addition, the consumption of said components is controlled upper
In the range of stating, be conducive to playing the synergy of each component.Summary each side reason, the fireproof coating tool that the present invention is provided
There is excellent fire resistance.
The adhesive force of fireproof coating in the present invention is less than 1 grade, and adhesive strength is significantly improved；Fireproof coating is at 800 DEG C
Fire resistance period under high temperature is between 30-35min, and resistance to elevated temperatures is remarkably reinforced, to succour and fire extinguishing wins more treasured
Your time；Production cost is low, and preparation method is simple.
Embodiment
The following examples can make professional and technical personnel that the present invention is more fully understood, but therefore not send out this
It is bright to be limited among described scope of embodiments.
Embodiment 1
The modified fireproof coating of present invention fraction proportioning by weight is made up of following components：
Styrene-acrylate emulsion：25 parts；
Hollow glass bead：5 parts；
APP：36 parts；
Pentaerythrite：28 parts；
Melamine：21 parts；
Mineral fibres：8 parts；
Melamine：20 parts；
Deionized water：40 parts；
Talcum powder：10 parts；
Sodium metasilicate：20 parts；
Titanium dioxide：10 parts；
Expanded vermiculite：5 parts；
Pentaerythrite：5 parts；
Mica powder：10 parts.
Embodiment 2
The modified fireproof coating of present invention fraction proportioning by weight is made up of following components：
Styrene-acrylate emulsion：8 parts；
Hollow glass bead：0.5 part；
APP：5 parts；
Pentaerythrite：2 parts；
Melamine：1 part；
Mineral fibres：1 part；
Melamine：10 parts；
Deionized water：20 parts；
Talcum powder：2 parts；
Sodium metasilicate：5 parts；
Titanium dioxide：5 parts；
Expanded vermiculite：1 part；
Pentaerythrite：1 part；
Mica powder：1 part.
Embodiment 3
The modified fireproof coating of present invention fraction proportioning by weight is made up of following components：
Styrene-acrylate emulsion：15 parts；
Hollow glass bead：3 parts；
APP：21 parts；
Pentaerythrite：16 parts；
Melamine：12 parts；
Mineral fibres：5 parts；
Melamine：15 parts；
Deionized water：30 parts；
Talcum powder：6 parts；
Sodium metasilicate：12 parts；
Titanium dioxide：7 parts；
Expanded vermiculite：3 parts；
Pentaerythrite：3 parts；
Mica powder：5 parts.
Apply the technical scheme of the present invention, added on the basis of film forming agent, acid donors, carbon donor, foaming agent and solvent
Inorganic hollow filler, metal oxide and/or mineral fibres.Inorganic hollow filler has the less coefficient of conductivity, can be effective
The thermal conductivity of fireproof coating is reduced, so as to be conducive to improving the fire resistance and flame retarding efficiency of fireproof coating.More particularly, by
Char Residues Structure can be strengthened in metal oxide and/or mineral fibres, while film forming agent can promote high-molecular compound plasticity
The membrane formation mechanism of flowing and elastic deformation, improvement coalescence performance and emulsion, promotion fireproof coating formation continuity film, therefore into
The toughness and machine that are used in conjunction with effectively improving fireproof paint coating of film and metal oxide and/or inorganic hollow filler
Tool intensity, so that be conducive to improving the intensity of the three-D space structure foamed char of above-mentioned fireproof system formation and burn resistance,
And then be conducive to extending the fire resistance period of fireproof coating.In addition, by the consumption control of said components within the above range, being conducive to
Play the synergy of each component.Summary each side reason, the fireproof coating that the present invention is provided has excellent fire resistance
Energy.
The adhesive force of fireproof coating in the present invention is less than 1 grade, and adhesive strength is significantly improved；Fireproof coating is at 800 DEG C
Fire resistance period under high temperature is between 30-35min, and resistance to elevated temperatures is remarkably reinforced, to succour and fire extinguishing wins more treasured
Your time；Production cost is low, and preparation method is simple.
It should be understood by those skilled in the art that, the present invention is not limited to the above embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also have
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
By appended claims and its equivalent thereof.
Claims (7)
1. a kind of modified fireproof coating, it is characterised in that：Fraction proportioning by weight is made up of following components：
Film forming agent：8-25 parts；
Inorganic hollow filler：0.5-5 parts；
Acid donors：5-36 parts；
Carbon donor：2-28 parts；
Foaming agent：1-21 parts；
Synergist：1-8 parts；
Melamine：10-20 parts；
Deionized water：20-40 parts；
Talcum powder：2-10 parts；
Sodium metasilicate：5-20 parts；
Titanium dioxide：5-10 parts；
Expanded vermiculite：1-5 parts；
Pentaerythrite：1-5 parts；
Mica powder：1-10 parts.
2. modified fireproof coating according to claim 1, it is characterised in that：The inorganic hollow filler is selected from hollow glass
One or more in the group of glass pearl, hollow glass fibre and alumina hollow ball composition.
3. modified fireproof coating according to claim 1, it is characterised in that：The synergist is selected from metal oxide
And/or mineral fibres, the weight ratio of metal oxide and mineral fibres is 0.2~1.
4. modified fireproof coating according to claim 1, it is characterised in that：The film forming agent is selected from vinyl acetate-uncle
Ethylene carbonate polymerized emulsion, polyvinyl acetate emulsion, styrene-acrylate emulsion, organosilicon-modified acrylate breast
Liquid, Polystyrene emulsion, pure-acrylic emulsion, polyacrylate dispersion, water soluble amino resin and water soluble phenol resin group
Into group in one or more.
5. modified fireproof coating according to claim 1, it is characterised in that：The acid donors are selected from APP, carbon
One or more in the group that sour hydrogen ammonium, diammonium hydrogen phosphate, ammonium dihydrogen phosphate and formic acid are constituted.
6. modified fireproof coating according to claim 1, it is characterised in that：The carbon donor is selected from pentaerythrite, two
One or more in the group that pentaerythrite, sorbierite, erythrol, starch, inositol and maltose are constituted.
7. modified fireproof coating according to claim 1, it is characterised in that：The foaming agent is selected from melamine, double
One or more in the group that cyanamide, polyamide, melamine, polyureas, guanidine, glycine and urea are constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710375380.0A CN107163701A (en) | 2017-05-24 | 2017-05-24 | A kind of modified fireproof coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710375380.0A CN107163701A (en) | 2017-05-24 | 2017-05-24 | A kind of modified fireproof coating |
Publications (1)
| Publication Number | Publication Date |
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| CN107163701A true CN107163701A (en) | 2017-09-15 |
Family
ID=59821430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710375380.0A Pending CN107163701A (en) | 2017-05-24 | 2017-05-24 | A kind of modified fireproof coating |
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| CN (1) | CN107163701A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157084A (en) * | 2019-04-30 | 2019-08-23 | 浙江启墨新材料科技有限公司 | A kind of high-performance expansion fire-proof felt and preparation method thereof |
| CN111378330A (en) * | 2018-12-30 | 2020-07-07 | 镇江市睿泽文化传播有限公司 | Preparation method of green water-based environment-friendly coating for indoor device |
| CN112310523A (en) * | 2019-07-29 | 2021-02-02 | 浙江启墨新材料科技有限公司 | Power storage device containing expansion type fireproof felt |
| CN114231118A (en) * | 2021-12-24 | 2022-03-25 | 广东粤港澳大湾区黄埔材料研究院 | Water-based intumescent fire-retardant coating and preparation method and application thereof |
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| CN104774509A (en) * | 2015-04-22 | 2015-07-15 | 北京碧海舟腐蚀防护工业股份有限公司 | Fireproof paint |
| CN104789022A (en) * | 2014-01-22 | 2015-07-22 | 天津盛杰建筑材料有限公司 | Fireproof paint |
| CN106280641A (en) * | 2016-08-03 | 2017-01-04 | 韶关市连邦环保新材料股份有限公司 | A kind of tunnel fireproof coating and preparation method thereof |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104789022A (en) * | 2014-01-22 | 2015-07-22 | 天津盛杰建筑材料有限公司 | Fireproof paint |
| CN104774509A (en) * | 2015-04-22 | 2015-07-15 | 北京碧海舟腐蚀防护工业股份有限公司 | Fireproof paint |
| CN106280641A (en) * | 2016-08-03 | 2017-01-04 | 韶关市连邦环保新材料股份有限公司 | A kind of tunnel fireproof coating and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378330A (en) * | 2018-12-30 | 2020-07-07 | 镇江市睿泽文化传播有限公司 | Preparation method of green water-based environment-friendly coating for indoor device |
| CN110157084A (en) * | 2019-04-30 | 2019-08-23 | 浙江启墨新材料科技有限公司 | A kind of high-performance expansion fire-proof felt and preparation method thereof |
| CN112310523A (en) * | 2019-07-29 | 2021-02-02 | 浙江启墨新材料科技有限公司 | Power storage device containing expansion type fireproof felt |
| CN114231118A (en) * | 2021-12-24 | 2022-03-25 | 广东粤港澳大湾区黄埔材料研究院 | Water-based intumescent fire-retardant coating and preparation method and application thereof |
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Application publication date: 20170915 |