CN105731977B - A kind of water-fast inorganic coating and preparation method thereof - Google Patents
A kind of water-fast inorganic coating and preparation method thereof Download PDFInfo
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- CN105731977B CN105731977B CN201610054585.4A CN201610054585A CN105731977B CN 105731977 B CN105731977 B CN 105731977B CN 201610054585 A CN201610054585 A CN 201610054585A CN 105731977 B CN105731977 B CN 105731977B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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Abstract
The present invention relates to inorganic coating preparing technical fields, more particularly to a kind of water-fast inorganic coating and preparation method thereof, the present invention by hydrophobically modified celluloses, multifunctional assistant, antifoaming agent, dispersant, wetting agent, titanium dioxide, powdered whiting, silicone acrylic emulsion, coalescents, potassium silicate, thickener, coupling agent and water by carrying out reasonable compounding use, said components are subjected to substep addition mixing, obtain a kind of water-fast inorganic coating, it is good with water resistance, the characteristics of weatherability is strong, strong adhesive force.
Description
Technical field
The present invention relates to inorganic coating preparing technical fields, and in particular to a kind of water-fast inorganic coating and preparation method thereof.
Background technology
Inorganic coating is a kind of coating using inorganic material as main film forming substance, is the abbreviation of full-inorganic mineral coating,
It is widely used in the daily life fields such as building, drawing.In architectural engineering common coating be alkali metal silicate aqueous solution and
The aqueous dispersions of colloidal silicon dioxide.With both the above film forming matter, silicate and Ludox can be made into（Colloidal silicon dioxide）Nothing
Machine coating, inorganic coating are by inorganic polymer and metal, metal oxide nano-material, the rare earth ultra micro by scattered activation
The inorganic polymer coating of powder composition can be generated with steel structure surface iron atom fast reaction with physics, the dual guarantor of chemistry
Shield acts on, and by chemical bond and the inorganic polymer corrosion-inhibiting coating of matrix firm connection, environmentally safe, service life is long,
Antiseptic property is reached advanced world standards, and is the high-tech regeneration product for meeting environmental requirement.
Silicates film forming matter is substantially used in current inorganic coating, poor water resistance, being coated on exterior wall cannot
Through rain drop erosion month after month throughout the year, if running into long-term rainwater weather, the easy bubble of exterior coating holds after dry
It is easy to fall off, cause exterior wall mottled, and hold caducous exterior wall paint and be equal at any time the falling object from high altitude it is possible that coming off, it seriously endangers
Arrive people's.
The content of the invention
In order to overcome shortcoming and defect in the prior art, it is an object of the invention to provide a kind of water-fast inorganic paintings
Material, weatherability strong, strong adhesive force the characteristics of good with water resistance.
The present invention another goal of the invention be to provide a kind of preparation method of high-intensity inorganic coating, have make each group
Divide good mixing property, obtained inorganic coating water resistance is good.
The purpose of the present invention is achieved through the following technical solutions：
A kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
0.3-1.8 parts of hydrophobically modified hydroxyethyl cellulose
0.5-2 parts of multifunctional assistant
2.5-5.5 parts of dispersant
0.5-2 parts of wetting agent
25-36 parts of titanium dioxide
75-80 parts of powdered whiting
20-40 parts of silicone acrylic emulsion
1.5-2.5 parts of coalescents
0.2-0.8 parts of antifoaming agent
55-75 parts of potassium silicate
0.5-2 parts of thickener
4-6 parts of coupling agent
80-90 parts of water.
Hydrophobically modified celluloses is that a kind of that a small amount of hydrophobic grouping is introduced in strand is water-soluble with " amphiphilic structure "
Property cellulose derivative, with general water-soluble cellulose derivative carboxymethyl cellulose (CMC) and hydroxyethyl cellulose (HEC) phase
Than due to the influence of hydrophobic effect in its solution, this kind of modifier has more significant tackifying, heat-resistant salt-resistant and anti-shearing
Stability.The aqueous solution proportion of hydrophobically modified celluloses used in the present invention（g/ml）For 1.3-1.5, can purchase on the market
Gained is bought, it is good with thickening effect it is preferable to use sub- assorted orchid HE10K, anti-splashing is improved, reduces the addition of other thickeners
Amount reduces cost of material.
Multifunctional assistant is also commonly called as AMP-95, be containing 5% moisture content 2-amino-2-methyl-1-propanol, it is of the invention
Multifunctional assistant is added in inorganic coating, the dispersiveness of coating can be improved, reduces the addition of dispersant, can also improve the light of coating
Damp degree, multifunctional assistant can assign inorganic coating extremely excellent pH stability.The control of pH value is to the allotment right and wrong of inorganic coating
It is often important, by the pH for controlling the present invention pigment is instigated to be able to stability fully dispersed, in raising coating system, reduction pair
The corrosivity of storage carrier, and highly viscous stability is put forward, adhesive force and intensity of the inorganic coating on slippery walls are improved,
It prevents from coming off.It is preferable to use the AMP-95 of Angus, the modest MA-95 of moral, obtained inorganic coatings for the multifunctional assistant of the present invention
Water resistance it is more preferable.
Silicone acrylic emulsion is that the organic silicon monomer containing unsaturated bond and acrylic monomer are added in suitable auxiliary agent, is passed through
The lotion that nucleocapsid cladding polymerization technique is polymerized.Combine organosilicon fire-resistant, weatherability, chemical-resistant, hydrophobic, table
High colour retention, flexibility, the adhesion of the low not v ulnerability of face energy and acrylic resin are added to the inorganic coating of the present invention
In, improve the high durable of inorganic coating of the present invention, high water-fast, resistant to pollution characteristic.General traditional coating is using inorganic
Resin, the coating water-proof poor performance being prepared, water-fast effect is undesirable, and the present invention improves coating by adding silicone acrylic emulsion
Water resistance.
It also added antifoaming agent in the present invention, reduce the bubble generated in preparation process, dispersant can further improve
The dispersiveness of each component, improves its uniformity, and the addition of wetting agent can make solid material be more easy to be soaked in water, by reducing it
Surface tension or interfacial tension allow the water to be deployed on solid material surface or penetrate its surface, and solid material is soaked,
Improve the uniformity of coating and mutual reaction adequacy.Present invention preferably uses Tao Shi BD-405 models wetting agent and
The wetting agent of Clariant 407CN models, comprehensive performance are preferable.
Propylene glycol can have certain cryoprotective effects as added solvent with water and immiscible organic solvent.
Titanium dioxide and powdered whiting are as main filler part, and powdered whiting, abbreviation coarse whiting is by natural magnesium
Salt mineral such as calcite, marble, lime stone are ground.It is common powdery inorganic filler, there is chemical purity height, inertia
Greatly, be not easy to chemically react, thermal stability is good, will not be decomposed below 400 DEG C, whiteness is high, oil absorbency is low, index of refraction is low, matter is soft,
It is dry, without the crystallization water, the advantages that low wearing valve of hardness is small, nontoxic, tasteless, odorless, good dispersion.Titanium dioxide is common painting
Expect filler, there is anti-wadding to make good use of, the characteristic that anti-decolourization is prominent, weatherability is strong, the two combination can make the coating of the present invention
Strong adhesive force, water resistance enhancing.
Potassium silicate can improve the adhesive property in coating of the present invention, improve its adhesive force and intensity in slippery walls.This
The potassium silicate of invention preferably uses the AH-K of Beijing Australia Chinese1Product or the GHSK products of Jiangsu League of Nations.
The present invention also added the multiple additives such as a small amount of thickener, coupling agent, coalescents, and dosage all passes through
What experiment was preferably added, coordinate above-mentioned other components, the inorganic coating of the obtained present invention possesses high intensity, and adhesion property is strong
The characteristics of, said components are played the role of influencing each other, be reacted to each other, is had excellent performance by the reasonable compatibility of the present invention.
Further, a kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
0.8-1.5 parts of hydrophobically modified hydroxyethyl cellulose
0.5-1 parts of multifunctional assistant
3-4.5 parts of dispersant
0.5-1.5 parts of wetting agent
30-36 parts of titanium dioxide
75-78 parts of powdered whiting
20-30 parts of silicone acrylic emulsion
1.5-2 parts of coalescents
0.2-0.5 parts of antifoaming agent
55-65 parts of potassium silicate
0.5-1 parts of thickener
4-6 parts of coupling agent
80-90 parts of water.
The comprehensive performance of coating is more excellent, and intensity higher, adhesive force is more preferable, can no matter applied to which kind of metope
It is permanent to keep water-proofing performance, applied to exterior wall, more there are very strong anti-marquis's property, waterproof and etch-proof excellent properties.
Wherein, the dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant, and mixed weight ratio is（1-3）：
（1.5-2.5）.Ammonium salt dispersant large arch dam, versatility is good, disperses effect height and viscosity stabilization, especially has very to inorganic pigment
Good dispersion performance, the ammonia volatilization when coating dry are answered into the original insoluble form of water between such dispersant, so as to improve latex
The water resistance of coating and high glossiness.
The anti-carbonating performance of silicic acid dipersant is strong, prevents the invasion and attack of acid rain, water-fast, abrasion resistance is good, deflocculation effect
Fruit protrudes, and solid content is high, and two kinds of dispersants are used in combination, and can effectively improve the water resistance of coating of the present invention.
Wherein, the thickener is polyurethane thickener.
Wherein, the multifunctional assistant chooses the modest MA-95 of AMP-95 or moral from Angus.
Wherein, the coupling agent is silane coupling agent.
Wherein, the viscosity of above-mentioned hydrophobically modified hydroxyethyl cellulose is 30000cps.
Wherein, the wetting agent is chosen from the BD-405 of Tao Shi or Clariant 407CN.
A kind of preparation method of water-fast inorganic coating, comprises the following steps：
A, hydrophobically modified celluloses is added in by weight into water, and slow machine 400-600r/min stirs 3-8min, until outer
It sees without apparent coarse granule.
B, add in multifunctional assistant be completely dissolved hydrophobically modified celluloses, then add in part antifoaming agent, dispersant and
Wetting agent continues slow machine and stirs evenly.
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, then with the speed of 1300-1600r/min
Stir 15-30min.
D, after with addition silicone acrylic emulsion stirs evenly under the rotating speed of 500-700r/min, coalescents and surplus are then added in
Antifoaming agent stirring 8-12min, and then add in potassium silicate, coupling agent, finally adjust viscosity to 90-100KU with thickener, i.e.,
Obtain water-fast inorganic coating.
Wherein, the fineness requirement that the step C is completed is 40-50 μm.The amount of the antifoaming agent added in the step B is total
The 1/3-1/2 of quality.
By the good mixing property for the high-intensity inorganic coating that the above method is prepared, the uniformity is high, between component
Synergistic effect is strong, and obtained inorganic coating intensity is high, and adhesion property is strong.
The beneficial effects of the present invention are：The present invention by by hydrophobically modified celluloses, multifunctional assistant, antifoaming agent, point
Powder, wetting agent, titanium dioxide, powdered whiting, silicone acrylic emulsion, coalescents, potassium silicate, thickener, coupling agent and water carry out
Reasonable compounding use, each component react, mutually promote between component, influence each other, and reduce hydrophilic component in paint film and send out
Its maximum synergistic effect is waved, in addition curing agent need not be added by obtaining the inorganic coating of the present invention, can directly apply to exterior wall,
The surface of smooth substrate embodies the water-proofing performance of superelevation, it is continuous 72 it is small when impregnate all will not bubble, it is complicated to be effective against exterior wall
Weather environment, weatherability is strong, can be adhered to exterior wall surface for a long time and not burst, not fall off, and is not in water stain mould stain, and wall is long
It is bright as new long.
The present invention another advantage is that：By the way that hydrophobically modified hydroxyethyl cellulose is first uniformly mixed with water, then
Addition multifunctional assistant be completely dissolved hydrophobically modified hydroxyethyl cellulose, be subsequently added into antifoaming agent, dispersant and wetting agent after
Continue slow machine to stir evenly, then put into titanium dioxide and powdered whiting, be eventually adding coalescents, antifoaming agent, potassium silicate, coupling
Agent adjusts viscosity with thickener, due to the present invention relates to various ingredients and substance, with solid, liquid and silty state,
Degree of wetting is different, it is necessary to adjust its order for adding in and mixing according to different characteristics, and the inorganic coating finally obtained mixes
It is high to spend the uniformity, water resistance is good, and water-fast persistence is high.
Specific embodiment
For the ease of the understanding of those skilled in the art, with reference to embodiment, the present invention is further illustrated, real
The content that the mode of applying refers to not is limitation of the invention.
Embodiment 1
A kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
0.3 part of hydrophobically modified hydroxyethyl cellulose
2 parts of multifunctional assistant
2.5 parts of dispersant
2 parts of wetting agent
25 parts of titanium dioxide
80 parts of powdered whiting
20 parts of silicone acrylic emulsion
2.5 parts of coalescents
0.2 part of antifoaming agent
75 parts of potassium silicate
0.5 part of thickener
6 parts of coupling agent
80 parts of water.
The dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant, and mixed weight ratio is 1： 1.5.
The thickener is polyurethane thickener.
The multifunctional assistant chooses the AMP-95 from Angus.
The coupling agent is silane coupling agent.
The viscosity of the hydrophobically modified hydroxyethyl cellulose is 30000cps.
The wetting agent chooses the BD-405 from Tao Shi.
A kind of preparation method of water-fast inorganic coating, comprises the following steps：
A, hydrophobically modified celluloses is added to the water by weight, slow machine 400r/min stirs 8min, until appearance without
Apparent coarse granule.
B, adding in multifunctional assistant is completely dissolved hydrophobically modified celluloses, then adds in the antifoaming agent of total amount 1/3, disperses
Agent and wetting agent continue slow machine and stir evenly.
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, then be stirred with the speed of 1300r/min
30min。
D, to be added under the rotating speed of 500r/min after silicone acrylic emulsion stirs evenly, disappearing for coalescents and surplus is then added in
Infusion stirs 12min, and then adds in potassium silicate, coupling agent, finally adjusts viscosity to 90KU with thickener to get to water-fast nothing
Machine coating.
Wherein, the fineness requirement that the step C is completed is 40 μm.
Embodiment 2
A kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
1.8 parts of hydrophobically modified hydroxyethyl cellulose
0.5 part of multifunctional assistant
5.5 parts of dispersant
0.5 part of wetting agent
36 parts of titanium dioxide
75 parts of powdered whiting
40 parts of silicone acrylic emulsion
1.5 parts of coalescents
0.8 part of antifoaming agent
55 parts of potassium silicate
2 parts of thickener
4 parts of coupling agent
80 parts of water.
The dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant, and mixed weight ratio is 3：2.5.
The thickener is polyurethane thickener.
The multifunctional assistant is chosen from the modest MA-95 of moral.
The coupling agent is silane coupling agent.
The viscosity of the hydrophobically modified hydroxyethyl cellulose is 30000cps.
The wetting agent is chosen from Clariant 407CN.
A kind of preparation method of water-fast inorganic coating, comprises the following steps：
A, hydrophobically modified celluloses is added to the water by weight, slow machine 600r/min stirs 3min, until appearance without
Apparent coarse granule.
B, adding in multifunctional assistant is completely dissolved hydrophobically modified celluloses, then adds in the antifoaming agent of total amount 1/3, disperses
Agent and wetting agent continue slow machine and stir evenly.
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, then be stirred with the speed of 1600r/min
15min。
D, to be added under the rotating speed of 700r/min after silicone acrylic emulsion stirs evenly, disappearing for coalescents and surplus is then added in
Infusion stirs 8min, and then adds in potassium silicate, coupling agent, finally adjusts viscosity to 100KU with thickener to get to water-fast nothing
Machine coating.
Wherein, the fineness requirement that the step C is completed is 50 μm.
Embodiment 3
A kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
1 part of hydrophobically modified hydroxyethyl cellulose
1 part of multifunctional assistant
3.5 parts of dispersant
1.5 parts of wetting agent
30 parts of titanium dioxide
78 parts of powdered whiting
30 parts of silicone acrylic emulsion
2 parts of coalescents
0.5 part of antifoaming agent
65 parts of potassium silicate
1.5 parts of thickener
5 parts of coupling agent
85 parts of water.
The dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant, and mixed weight is than 2：1.5.
The thickener is polyurethane thickener.
The multifunctional assistant chooses the AMP-95 from Angus.
The coupling agent is silane coupling agent.
The viscosity of the hydrophobically modified hydroxyethyl cellulose is 30000cps.
The wetting agent chooses the BD-405 from Tao Shi.
A kind of preparation method of water-fast inorganic coating, comprises the following steps：
A, hydrophobically modified celluloses is added to the water by weight, slow machine 500r/min stirs 5min, until appearance without
Apparent coarse granule.
B, adding in multifunctional assistant is completely dissolved hydrophobically modified celluloses, then adds in the antifoaming agent of total amount 1/3, disperses
Agent and wetting agent continue slow machine and stir evenly.
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, 20min is then stirred with the speed of 1500r/min.
D, to be added under the rotating speed of 600r/min after silicone acrylic emulsion stirs evenly, disappearing for coalescents and surplus is then added in
Infusion stirs 10min, and then adds in potassium silicate, coupling agent, finally adjusts viscosity to 95KU with thickener to get to water-fast nothing
Machine coating.
Wherein, the fineness requirement that the step C is completed is 45 μm.
Embodiment 4
A kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
0.8 part of hydrophobically modified hydroxyethyl cellulose
0.5 part of multifunctional assistant
3 parts of dispersant
0.5 part of wetting agent
30 parts of titanium dioxide
75 parts of powdered whiting
20 parts of silicone acrylic emulsion
1.5 parts of coalescents
0.2 part of antifoaming agent
55 parts of potassium silicate
0.5 part of thickener
4 parts of coupling agent
80 parts of water.
The dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant, and mixed weight ratio is 1：2.5.
The thickener is polyurethane thickener.
The multifunctional assistant is chosen from the modest MA-95 of moral.
The coupling agent is silane coupling agent.
The viscosity of the hydrophobically modified hydroxyethyl cellulose is 30000cps.
The wetting agent chooses the BD-405 from Tao Shi.
A kind of preparation method of water-fast inorganic coating, comprises the following steps：
A, hydrophobically modified celluloses is added to the water by weight, slow machine 600r/min stirs 8min, until appearance without
Apparent coarse granule.
B, adding in multifunctional assistant is completely dissolved hydrophobically modified celluloses, then adds in the antifoaming agent of total amount 1/2, disperses
Agent and wetting agent continue slow machine and stir evenly.
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, 15min is then stirred with the speed of 1300r/min.
D, after with addition silicone acrylic emulsion stirs evenly under the rotating speed of 700r/min, the defoaming of coalescents and surplus is then added in
12min is stirred in agent, and then adds in potassium silicate, coupling agent, finally adjusts viscosity to 95KU with thickener to get to water-fast inorganic coating.
Wherein, the fineness requirement that the step C is completed is 45 μm.
Embodiment 5
A kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
1.5 parts of hydrophobically modified hydroxyethyl cellulose
1 part of multifunctional assistant
4.5 parts of dispersant
1.5 parts of wetting agent
36 parts of titanium dioxide
78 parts of powdered whiting
30 parts of silicone acrylic emulsion
2 parts of coalescents
0.5 part of antifoaming agent
65 parts of potassium silicate
1 part of thickener
6 parts of coupling agent
90 parts of water.
The dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant, and mixed weight ratio is 3:2.
The thickener is polyurethane thickener.
The multifunctional assistant chooses the AMP-95 from Angus.
The coupling agent is silane coupling agent.
The viscosity of the hydrophobically modified hydroxyethyl cellulose is 30000cps.
The wetting agent is chosen from Clariant 407CN.
A kind of preparation method of water-fast inorganic coating, comprises the following steps：
A, hydrophobically modified celluloses is added to the water by weight, slow machine 600r/min stirs 8min, until appearance without
Apparent coarse granule.
B, adding in multifunctional assistant is completely dissolved hydrophobically modified celluloses, then adds in the antifoaming agent of total amount 1/3, disperses
Agent and wetting agent continue slow machine and stir evenly.
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, then be stirred with the speed of 1600r/min
30min。
D, to be added under the rotating speed of 700r/min after silicone acrylic emulsion stirs evenly, disappearing for coalescents and surplus is then added in
Infusion stirs 12min, and then adds in potassium silicate, coupling agent, finally adjusts viscosity to 90KU with thickener to get to water-fast nothing
Machine coating.
Wherein, the fineness requirement that the step C is completed is 40 μm.
Embodiment 6
A kind of water-fast inorganic coating, is mainly made of the raw material of following parts by weight：
1 part of hydrophobically modified hydroxyethyl cellulose
0.8 part of multifunctional assistant
4 parts of dispersant
1.2 parts of wetting agent
32 parts of titanium dioxide
76 parts of powdered whiting
25 parts of silicone acrylic emulsion
1.8 parts of coalescents
0.3 part of antifoaming agent
60 parts of potassium silicate
0.7 part of thickener
5 parts of coupling agent
85 parts of water.
The dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant, and mixed weight ratio is 3:1.5.
The thickener is polyurethane thickener.
The multifunctional assistant is chosen from the modest MA-95 of moral.
The coupling agent is silane coupling agent.
The viscosity of the hydrophobically modified hydroxyethyl cellulose is 30000cps.
The wetting agent chooses the BD-405 from Tao Shi.
A kind of preparation method of water-fast inorganic coating, comprises the following steps：
A, hydrophobically modified celluloses is added to the water by weight, slow machine 500r/min stirs 5min, until appearance without
Apparent coarse granule.
B, adding in multifunctional assistant is completely dissolved hydrophobically modified celluloses, then adds in the antifoaming agent of total amount 1/2, divides
Powder and wetting agent continue slow machine and stir evenly.
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, then be stirred with the speed of 1500r/min
25min。
D, to be added under the rotating speed of 650r/min after silicone acrylic emulsion stirs evenly, disappearing for coalescents and surplus is then added in
Infusion stirs 10min, and then adds in potassium silicate, coupling agent, finally adjusts viscosity to 95KU with thickener to get to water-fast nothing
Machine coating.
Wherein, the fineness requirement that the step C is completed is 45 μm.
The water-fast inorganic coating of the present invention that above-described embodiment is prepared is tested by GB/T1733-93 water resistances,
Can be not blistering with water-fast 300h, it does not fall off.
Above-described embodiment is the preferable implementation of the present invention, and in addition, the present invention can be realized with other manner,
Any obvious replacement is not departed from the premise of present inventive concept within protection scope of the present invention.
Claims (3)
1. a kind of water-fast inorganic coating, it is characterised in that：It is made of the raw material of following parts by weight：
Wherein, the thickener is polyurethane thickener, and the dispersant is the mixing of ammonium salt dispersant and silicic acid dipersant
Object, mixed weight ratio are 1-3：1.5-2.5, the multifunctional assistant choose the modest MA-95 of AMP-95 or moral from Angus, institute
Coupling agent is stated as silane coupling agent, the viscosity of the hydrophobically modified hydroxyethyl cellulose is 30000cps, is chosen from Ya Shilan
HE10K, the wetting agent choose the BD-405 from Tao Shi, and the potassium silicate uses the AH-K of Beijing Australia Chinese1Product or Jiangsu state
The GHSK products of connection.
2. a kind of preparation method of water-fast inorganic coating described in claim 1, it is characterised in that：Comprise the following steps：
A, hydrophobically modified hydroxyethyl cellulose is added to the water by weight, 3-8min is stirred with 400-600r/min, until
Appearance is without apparent coarse granule；
B, adding in multifunctional assistant is completely dissolved hydrophobically modified hydroxyethyl cellulose, then adds in part antifoaming agent, dispersant
Continue slow machine with wetting agent to stir evenly；
C, treat to put into titanium dioxide and powdered whiting after the complete mixing of material, then be stirred with the speed of 1300-1600r/min
15-30min；
D, added under the rotating speed of 500-700r/min after silicone acrylic emulsion stirs evenly, then add in disappearing for coalescents and surplus
Infusion stir 8-12min, and then add in potassium silicate, coupling agent, finally with thickener adjust viscosity to 90-100KU to get to
Water-fast inorganic coating.
3. a kind of preparation method of water-fast inorganic coating according to claim 2, it is characterised in that：The step C processing
Fineness of materials requirement for 40-50 μm.
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