CN109321071A - Outer wall heat-insulating coating and preparation method thereof - Google Patents
Outer wall heat-insulating coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses outer wall heat-insulating coating and preparation method thereof, the ingredient and its parts by weight of the coating: change 28-34 parts of modified acrylate emulsion, 10-15 parts of modified silicasol, 0.05-0.1 parts of aerosil powder, 0.1-0.4 parts of graphene, 3-7 parts of nano zine oxide, 2-3 parts of talcum powder, 2-3 parts of mica powder, 3-5 parts of sharp type titanium dioxide, 1.2-1.8 parts of White Carbon black, 0.1-0.15 parts of emulsifier, 0.08-0.13 parts of film forming agent, 0.1-0.15 parts of dispersing agent, 0.02-0.1 parts of defoaming agent, 0.1-0.5 parts of thickener, 7-12 parts of water.The formula of outer wall heat-insulating coating of the present invention is simple, has good anti-ultraviolet function and light reflection function, can effectively realize heat-insulated, environmental protection and energy saving, and coating stability is good, do not crack, adhesive force is good, is not easy to tarnish, the long service life of coating.
Description
Technical field
The present invention relates to technical field of coatings more particularly to outer wall heat-insulating coating and preparation method thereof.
Background technique
The sun is the source of most energy on the earth, common coal, petroleum, wind energy, the fortune of water in daily life
Kinetic energy etc. is all a kind of form of solar energy.The present sun is still with per second 1.765 × 1017The speed of J radiates energy to the earth
Surface, the area that China reaches 2200 hours the annual accumulative sunlight time has been more than the 60% of national territorial area.By the continuous of the sun
Irradiation, body surface energy constantly gather, and temperature significantly increases, such as metal object surface temperature can reach in the hot summer
To 70 ~ 80 DEG C, building roof and exterior wall surface temperature can achieve 40 ~ 50 DEG C.It is reported that air-conditioning, air conditioner, spray equipment and
Consumed energy accounts for 27% or so of China's whole year total energy consumption to the cooling refrigerations such as electric fan equipment every year, the peak in annual summer
Phase electricity consumption needs 10 pipe of reinforced concrete at Three Gorges Power Station are quasi- at full capacity to turn just to be able to satisfy.Simultaneously in northern cold winter, need using a large amount of
Heater unit keep out the cold, the energy consumption for Heating,Ventilating and Air Conditioning just accounts for the 30% ~ 50% of building total energy consumption, and winter heating is annual
18,000,000 tons of coal are consumed than standard more.High energy consumption building winter heating is used with cooling in summer refrigeration equipment so that China's energy
Waste is serious.Therefore, heat-insulated, heat preservation, energy-saving and environmental protection have become the social concern to attract people's attention, to exterior walls of buildings into
The efficient heat-insulation and heat-preservation measure of row is very urgent.There are two types of the means of solution Building Energy-saving are general: first is that heat preservation, second is that
Reflective insulation.The external wall heat insulating coatings for taking into account heat-insulated needs and heat insulation effect have the double of coating and thermal insulation material
Weight advantage, is formed with the insulating of some strength and elasticity, is the developing direction of outside wall heat preservation after dry.It has excellent
Different thermal and insulating performance and fire protecting performance, can be thinned excessively plentiful thickness of wall body for mechanical requirements, moreover it is possible to reduce soil
This is built up, is the ideal substitute of Conventional insulation, is with a wide range of applications.Zero carbon shop of Shanghai World's Fair and Wanke are real
It tests building and all applies heat insulating coatings, show that this coating has effects of energy saving and emission reduction outstanding.Therefore, high performance heat-insulated
Thermal insulation coatings will create a more healthy, comfortable, energy-efficient living environment for the people of 21 century.
The prior art such as Authorization Notice No. is the Chinese invention patent of 102719152 B of CN, discloses a kind of external wall
With insulating moulding coating and preparation method thereof, by mass percentage, coating raw material formula is as follows: propyl benzene lotion 75-80%, oxygen
Change zinc powder 5-8%, mica sheet powder 3-8%, cationic surfactant 0.2-0.5%, fumed silica 1-2%, pigment
0.1-0.2% and carbonic acid sodium powder 5-10%；Cationic surfactant is quaternary ammonium salt cationic surfactant.In propyl benzene cream
Liquid joined oxide powder and zinc, and joined mica sheet powder, and exterior coating is made to have good anti-ultraviolet function and light anti-
Function is penetrated, can effectively be realized heat-insulated.After tested, the coating used for building exterior wall, in 2 hours, in sealed states, 35-37 DEG C too
Under sunlight, cool down 9-10 DEG C than commercially available exterior coating, cooling effect is clearly.But the adhesive force of the insulating moulding coating compared with
Difference.
Summary of the invention
One of the objects of the present invention is to provide a kind of formulas simply, and there is good anti-ultraviolet function and light to reflect
Function can effectively realize heat-insulated, environmental protection and energy saving, and coating stability is good, do not crack, adhesive force is good, is not easy to tarnish, coating
Outer wall heat-insulating coating with long service life.
The second object of the present invention is to provide that a kind of working condition is simple, significant loss is few, insulating moulding coating tool obtained
It is standby it is excellent in, low-shear viscosity, the preparation method of the good outer wall heat-insulating coating of viscosity stable storing.
The present invention in background technique aiming at the problem that mentioning, the technical solution taken are as follows: outer wall heat-insulating coating, including it is as follows
Ingredient and its parts by weight: 28-34 parts of modified acrylate emulsion, 10-15 parts of modified silicasol, aerosil powder
0.05-0.1 parts, 0.1-0.4 parts of graphene, 3-7 parts of nano zine oxide, 2-3 parts of talcum powder, 2-3 parts of mica powder, sharp type titanium dioxide
3-5 parts, 1.2-1.8 parts of White Carbon black, 0.1-0.15 parts of emulsifier, 0.08-0.13 parts of film forming agent, 0.1-0.15 parts of dispersing agent, disappear
0.02-0.1 parts of infusion, 0.1-0.5 parts of thickener, 7-12 parts of water.Insulating moulding coating formula of the present invention is simple, has good anti-purple
Outside line function and light reflection function can effectively realize heat-insulated, environmental protection and energy saving, and after brushing insulating moulding coating of the invention, whole year can
20% or more power consumption is saved, and coating stability is good, do not crack, adhesive force is good, is not easy to tarnish, the long service life of coating can
It is easy for construction to be suitable for a variety of building lots, and solvent is water, it is environmental-friendly, it has a good application prospect.
Preferably, the partial size of aerosil powder is 25-32nm, the ratio of aerosil powder and graphene
Example is 1:2-5.Aerosil powder in the particle size range has smaller thermal coefficient, and thermal coefficient will be well below pressure
SiO after piece2Microballoon, and there is large specific surface area, so that the heat-proof quality of aerosil powder is excellent, and graphene
Reference area it is larger and be sheet, be easy to reunite in coating system, it is more difficult to it is evenly dispersed, and aerosil powder and
The specific proportions of graphene may make aerosil powder to can reduce the Van der Waals force between graphene layer, so that dioxy
SiClx airsetting rubber powder and graphene are relatively easy to disperse in coating system, obtain the good coating of stable homogeneous.
The preparation method of outer wall heat-insulating coating, including modified acrylate emulsion preparation, modified silicasol preparation, coating system
It is standby, the specific steps are that:
Modified acrylate emulsion preparation: mix monomer, the ammonium persulfate of deionized water, mix monomer weight 0.2-0.4% is total
The ammonium persulfate and emulsifier of quality 30-40wt% is added in reaction kettle, in logical N2, under 550-650r/min stirring to abundant
Emulsification, then it is warming up to 78-88 DEG C, constant temperature to lotion drips remaining ammonium persulfate in 100-115min after becoming basket and mixing is single
Body, and 40-50min is kept the temperature, it is cooled to room temperature, the ammonium hydroxide for being finally then 8-12% with concentration adjusts pH to 7-8 to get containing
The emulsification lotion of organosilicon-modified acrylate, spare, which contains unsaturated double-bond, when in emulsion system plus
After entering initiator ammonium persulfate, emulsifier will be formed altogether with macromolecular chain on polymer particle surface under the action of initiator
Covalent bond overcomes conventional emulsion polymerizations and causes adverse effect to final polymer performance since emulsifier is free in the process
The drawbacks of, the emulsification lotion of preparation has that self-emulsifying ability, stability is good, gel fraction is low, average grain diameter is small, and drying time is short,
And the hydrophilic radical for emulsifying lotion surface is less, has water resistance with the coating of its preparation, adhesive force can reach 1 grade, shock resistance
And excellent water resistance, and it is environmental-friendly；
Modified silicasol preparation: silane coupling agent KH-560 aqueous solution is added in the ratio of solid content 1:0.8-0.9(wt/wt)
Into water silica sol, the dimethyl carbonate and KH-560 weight 0.042-0.046% of KH-560 weight 0.62-0.68% are added
Equal amido phenenyl acid, at 62-70 DEG C react 3-5h to get modified silicasol, spare, dimethyl carbonate and p-aminophenyl second
Acid can promote hydroxyl to SiO in the range of temperature is 62-70 DEG C2Particle surface migration, increases charge density, makes
Obtain SiO2And SiO2Electrostatic interparticle repulsion accounts for leading, does not easily lead to particle encounter and is gelled, thus SiO in silica solution can be improved2
Dispersing uniformity in the reaction system increases SiO in silane group and silica solution2Touch opportunity, improve the modification of silica solution
Effect, and extra silane coupling agent can be removed, avoid extra silane coupling agent from causing SiO in modified silicasol2Particle
Cohesion, improve the stability of modified silicasol, and then improve the stability of insulating moulding coating, and dimethyl carbonate and to amino
Phenylacetic acid can promote the organosiloxane with reactivity base that can react with the hydroxyl in silicate substrate, increase and apply
Film adhesive force on base material；The step is modified silica solution with silane coupling agent, the silicon after hydrolyzing silane coupling agent
SiO in groups and silica solution2The silicone hydroxyl polycondensation on surface forms chemical bond, can make preferably to tie between organic phase and inorganic phase
It closes, increases the hydrophobicity of silica solution, realize that it is evenly dispersed in the preparation step of insulating moulding coating, keep the equal of insulating moulding coating
One stability；
Coating preparation: by formula measure modified acrylate emulsion, modified silicasol, silica aerogel powder, graphene,
Nano zine oxide, talcum powder, mica sheet powder, sharp type titanium dioxide, White Carbon black, emulsifier, film forming agent, dispersing agent, defoaming agent, thickening
Agent, water are uniformly mixed, and are then ground 2-3 times, filtering, and the barrelling that discharges is to get insulating moulding coating.Preparation method of the present invention has life
The advantage that production condition is simple, significant loss is few, insulating moulding coating obtained has in excellent, low-shear viscosity, and viscosity storage is steady
It is fixed good, moreover it is possible to play the role of the water resistance and levelability for reducing cost, not reducing glossiness, improving finished product.
Preferably, methyl methacrylate, acrylic acid fourth in mix monomer in modified acrylate emulsion preparation step
Ester, acrylic acid, vinyltriethoxysilane weight ratio be 1:1.05-1.12:0.6-0.7:4.7-5.1.
Preferably, it is 1:1.1-1.2:0.07- that emulsifier, which is weight ratio, in modified acrylate emulsion preparation step
0.08 allyl propylsultaine succinic acid dibasic acid esters sodium salt, allyl octyl phenol polyoxyethylene ether and sucrose fatty ester.It is above-mentioned
The interfacial film that emulsifier can be formed in two-phase interface, can protect organosiloxane to be not easy hydrolyzed and polycondensation, so that lotion is poly-
Capable of being normally carried out for reaction is closed, reduction gel fraction is low and becomes the blue time, the degree of polymerization and rate of polymerization of polymer particle are improved, and
Keep obtained emulsification emulsion intercalation method preferable, while the reasonable combination of the emulsifier can prevent extra initiator in lotion water
Electrolyte is played in phase and increases the concentration of water phase electrolyte in lotion, maintains the repulsion between the polymer particle in emulsification lotion
Power, avoids the average grain diameter for increasing polymer particle in emulsification lotion, and the permeability of enhancing emulsification lotion reduces emulsification lotion
Drying time improves the adhesive force and shock resistance of coating after drying.
Compared with prior art, the invention has the benefit that 1) insulating moulding coating formula of the present invention is simple, have good
Anti-ultraviolet function and light reflection function can effectively realize heat-insulated, environmental protection and energy saving, and coating stability is good, does not crack, adheres to
Power is good, is not easy to tarnish, the long service life of coating, can be adapted for a variety of building lots, easy for construction, and solvent is water,
It is environmental-friendly, it has a good application prospect；2) it is excellent to have that working condition is simple, significant loss is few for preparation method of the present invention
Point, insulating moulding coating obtained has in excellent, low-shear viscosity, and viscosity stable storing is good.
Specific embodiment
The present invention program is described further below by embodiment:
Embodiment 1:
Outer wall heat-insulating coating, including following ingredient and its parts by weight: 28 parts of modified acrylate emulsion, 10 parts of modified silicasol,
0.05 part of aerosil powder, 0.1 part of graphene, 3 parts of nano zine oxide, 2 parts of talcum powder, 2 parts of mica powder, sharp type titanium white
3 parts of powder, 1.2 parts of White Carbon black, 0.1 part of emulsifier, 0.08 part of film forming agent, 0.1 part of dispersing agent, 0.02 part of defoaming agent, thickener 0.1
Part, 7 parts of water.Above-mentioned insulating moulding coating formula is simple, has good anti-ultraviolet function and light reflection function, can effectively realize
Heat-insulated, environmental protection and energy saving, after brushing above-mentioned insulating moulding coating, whole year can save 20% or more power consumption, and coating stability is good, do not crack,
Adhesive force is good, is not easy to tarnish, the long service life of coating, can be adapted for a variety of building lots, easy for construction, and solvent is
Water, it is environmental-friendly, it has a good application prospect.
The partial size of aerosil powder is 25-32nm, and the ratio of aerosil powder and graphene is 1:2.
Aerosil powder in the particle size range has smaller thermal coefficient, and thermal coefficient will be well below the SiO after tabletting2
Microballoon, and there is large specific surface area, so that the heat-proof quality of aerosil powder is excellent, and the reference area of graphene
It is larger and be sheet, it is easy to reunite in coating system, it is more difficult to evenly dispersed, and the spy of aerosil powder and graphene
Different ratio may make aerosil powder to can reduce the Van der Waals force between graphene layer, so that aerosil
Powder and graphene are relatively easy to disperse in coating system, obtain the good coating of stable homogeneous.
The preparation method of outer wall heat-insulating coating, including modified acrylate emulsion preparation, modified silicasol preparation, coating system
It is standby, the specific steps are that:
1) prepared by modified acrylate emulsion: by deionized water, the mix monomer of mix monomer weight 0.2%, the total matter of ammonium persulfate
The ammonium persulfate and emulsifier for measuring 30wt% are added in reaction kettle, in logical N2, under 550r/min stirring then rise to fully emulsified
For temperature to 78 DEG C, constant temperature to lotion drips remaining ammonium persulfate and mix monomer after becoming basket in 100min, and keeps the temperature 40min,
It is cooled to room temperature, the ammonium hydroxide for being finally then 8% with concentration adjusts pH to 7 to get the emulsification containing organosilicon-modified acrylate
Lotion, spare, which contains unsaturated double-bond, after initiator ammonium persulfate is added in emulsion system, emulsification
Agent will form covalent bonding on polymer particle surface with macromolecular chain under the action of initiator, overcome conventional emulsion
The drawbacks of adverse effect is caused to final polymer performance since emulsifier is free in polymerization process, the emulsification lotion tool of preparation
Have that self-emulsifying ability, stability are good, gel fraction is low, average grain diameter is small, drying time is short, and emulsifies the hydrophilic radical on lotion surface
It is less, there is water resistance with the coating of its preparation, adhesive force can reach 1 grade, shock resistance and excellent water resistance, and environmental-friendly；
2) modified silicasol prepare: in solid content 1:0.8(wt/wt) ratio by silane coupling agent KH-560 aqueous solution be added to
In water silica sol, the dimethyl carbonate of KH-560 weight 0.62% and the p-aminophenyl second of KH-560 weight 0.042% are added
Acid, reacts 3h at 62 DEG C to get modified silicasol, spare, and dimethyl carbonate and equal amido phenenyl acid can be in temperature
Hydroxyl can be promoted to SiO in the range of 62-70 DEG C2Particle surface migration, increases charge density, so that SiO2And SiO2Particle
Between electrostatic repulsion account for leading, do not easily lead to particle encounter and be gelled, thus SiO in silica solution can be improved2Divide in the reaction system
Uniformity is dissipated, SiO in silane group and silica solution is increased2Touch opportunity, improve the modified effect of silica solution, and can remove
Extra silane coupling agent avoids extra silane coupling agent from causing SiO in modified silicasol2The cohesion of particle is improved and is modified
The stability of silica solution, and then the stability of insulating moulding coating is improved, and dimethyl carbonate and equal amido phenenyl acid can promote
Organosiloxane with reactivity base can react with the hydroxyl in silicate substrate, and it is on base material attached to increase film
Put forth effort；The step is modified silica solution with silane coupling agent, the silane group and silica solution after hydrolyzing silane coupling agent
Middle SiO2The silicone hydroxyl polycondensation on surface forms chemical bond, can make preferably to combine between organic phase and inorganic phase, increases silica solution
Hydrophobicity, realize that it is evenly dispersed in the preparation step of insulating moulding coating, keep the stable homogeneous of insulating moulding coating；
3) modified acrylate emulsion, modified silicasol, silica aerogel powder, graphite coating preparation: are measured by formula
Alkene, nano zine oxide, talcum powder, mica sheet powder, sharp type titanium dioxide, White Carbon black, emulsifier, film forming agent, dispersing agent, defoaming agent,
Thickener, water are uniformly mixed, and are then ground 2 times, filtering, and the barrelling that discharges is to get insulating moulding coating.Preparation method of the present invention has
The advantage that working condition is simple, significant loss is few, insulating moulding coating obtained has in excellent, low-shear viscosity, viscosity storage
It is moderately good, moreover it is possible to play the role of the water resistance and levelability for reducing cost, not reducing glossiness, improving finished product.
Methyl methacrylate in mix monomer in modified acrylate emulsion preparation step, butyl acrylate, acrylic acid,
The weight ratio of vinyltriethoxysilane is 1:1.05:0.6:4.7.
Emulsifier is the allyl propylsultaine that weight ratio is 1:1.1:0.07 in modified acrylate emulsion preparation step
Succinic acid dibasic acid esters sodium salt, allyl octyl phenol polyoxyethylene ether and sucrose fatty ester.Mentioned emulsifier can be in two-phase interface
The interfacial film of formation can protect organosiloxane to be not easy hydrolyzed and polycondensation, so that emulsion polymerization can be normally carried out, drop
Low gel fraction is low and becomes the blue time, improves the degree of polymerization and rate of polymerization of polymer particle, and make the stabilization that emulsification lotion is made
Property is preferable, while the reasonable combination of the emulsifier can prevent extra initiator from playing electrolyte in lotion water phase and increase cream
The concentration of water phase electrolyte in liquid maintains the repulsive force between the polymer particle in emulsification lotion, avoids increasing in emulsification lotion
The average grain diameter of polymer particle, the permeability of enhancing emulsification lotion, the drying time for reducing emulsification lotion, applies after raising is dry
The adhesive force and shock resistance of layer.
Embodiment 2:
Outer wall heat-insulating coating, including following ingredient and its parts by weight: 30 parts of modified acrylate emulsion, 13 parts of modified silicasol,
It is 0.08 part of aerosil powder, 0.28 part of graphene, 5 parts of nano zine oxide, 2.5 parts of talcum powder, 2.5 parts of mica powder, sharp
4 parts of type titanium dioxide, 0.13 part of emulsifier, 0.1 part of film forming agent, 0.12 part of dispersing agent, 0.06 part of defoaming agent, increases 1.5 parts of White Carbon black
Thick dose 0.35 part, 9 parts of water.The partial size of aerosil powder is 25-32nm, the aerosil powder and graphene
Ratio be 1:3.5.
The preparation method of outer wall heat-insulating coating, including modified acrylate emulsion preparation, modified silicasol preparation, coating system
It is standby, the specific steps are that:
1) prepared by modified acrylate emulsion: by deionized water, the mix monomer of mix monomer weight 0.3%, the total matter of ammonium persulfate
The ammonium persulfate and emulsifier for measuring 35wt% are added in reaction kettle, in logical N2, under 600r/min stirring then rise to fully emulsified
For temperature to 80 DEG C, constant temperature to lotion drips remaining ammonium persulfate and mix monomer after becoming basket in 110min, and keeps the temperature 45min,
It is cooled to room temperature, the ammonium hydroxide for being finally then 10% with concentration adjusts pH to 7.5 to get organosilicon-modified acrylate is contained
Lotion is emulsified, it is spare；
2) prepared by modified silicasol: silane coupling agent KH-560 aqueous solution being added in the ratio of solid content 1:0.85(wt/wt)
Into water silica sol, the dimethyl carbonate of KH-560 weight 0.65% and the p-aminophenyl of KH-560 weight 0.044% are added
Acetic acid, reaction 4h is spare to get modified silicasol at 67 DEG C；
3) modified acrylate emulsion, modified silicasol, silica aerogel powder, graphite coating preparation: are measured by formula
Alkene, nano zine oxide, talcum powder, mica sheet powder, sharp type titanium dioxide, White Carbon black, emulsifier, film forming agent, dispersing agent, defoaming agent,
Thickener, water are uniformly mixed, and are then ground 3 times, filtering, and the barrelling that discharges is to get insulating moulding coating.
Methyl methacrylate in mix monomer in modified acrylate emulsion preparation step, butyl acrylate, acrylic acid,
The weight ratio of vinyltriethoxysilane is 1:1.08:0.65:4.9.
Emulsifier is the allyl propyl sulphur that weight ratio is 1:1.15:0.075 in modified acrylate emulsion preparation step
Base succinic acid dibasic acid esters sodium salt, allyl octyl phenol polyoxyethylene ether and sucrose fatty ester.
Embodiment 3:
Outer wall heat-insulating coating, including following ingredient and its parts by weight: 34 parts of modified acrylate emulsion, 15 parts of modified silicasol,
0.08 part of aerosil powder, 0.4 part of graphene, 7 parts of nano zine oxide, 3 parts of talcum powder, 3 parts of mica powder, sharp type titanium white
5 parts of powder, 1.8 parts of White Carbon black, 0.15 part of emulsifier, 0.13 part of film forming agent, 0.15 part of dispersing agent, 0.1 part of defoaming agent, thickener
0.5 part, 12 parts of water.The partial size of aerosil powder is 25-32nm, the ratio of the aerosil powder and graphene
Example is 1:5.
The preparation method of outer wall heat-insulating coating, including modified acrylate emulsion preparation, modified silicasol preparation, coating system
It is standby, the specific steps are that:
1) prepared by modified acrylate emulsion: by deionized water, the mix monomer of mix monomer weight 0.4%, the total matter of ammonium persulfate
The ammonium persulfate and emulsifier for measuring 40wt% are added in reaction kettle, in logical N2, under 650r/min stirring then rise to fully emulsified
For temperature to 88 DEG C, constant temperature to lotion drips remaining ammonium persulfate and mix monomer after becoming basket in 115min, and keeps the temperature 50min,
It is cooled to room temperature, the ammonium hydroxide for being finally then 12% with concentration adjusts pH to 8 to get the cream containing organosilicon-modified acrylate
Change lotion, it is spare；
2) modified silicasol prepare: in solid content 1:0.9(wt/wt) ratio by silane coupling agent KH-560 aqueous solution be added to
In water silica sol, the dimethyl carbonate of KH-560 weight 0.68% and the p-aminophenyl second of KH-560 weight 0.046% are added
Acid, reaction 5h is spare to get modified silicasol at 70 DEG C；
3) modified acrylate emulsion, modified silicasol, silica aerogel powder, graphite coating preparation: are measured by formula
Alkene, nano zine oxide, talcum powder, mica sheet powder, sharp type titanium dioxide, White Carbon black, emulsifier, film forming agent, dispersing agent, defoaming agent,
Thickener, water are uniformly mixed, and are then ground 3 times, filtering, and the barrelling that discharges is to get insulating moulding coating.
Methyl methacrylate in mix monomer in modified acrylate emulsion preparation step, butyl acrylate, acrylic acid,
The weight ratio of vinyltriethoxysilane is 1:1.12:0.7:5.1.
Emulsifier is the allyl propylsultaine that weight ratio is 1:1.2:0.08 in modified acrylate emulsion preparation step
Succinic acid dibasic acid esters sodium salt, allyl octyl phenol polyoxyethylene ether and sucrose fatty ester.
Embodiment 4:
The temperature reduction performance of insulating moulding coating is tested:
The embodiment 1-3 insulating moulding coating prepared and ippon coating are respectively coated on 2cm thickness moral marble slab, figure layer thickness
Control 2mm；It is respectively placed in 20cm*20cm*20cm closed case, cabinet upper layer is glass, and the material of bottom and surrounding is wood
Cabinet, is placed in 35-37 DEG C of outdoor by material, internal thermometer, and cabinet observes thermometer under each coating after 2h through direct sunlight
Temperature the results are shown in Table 1.
From table 1 it follows that Thermal insulating coating for building exterior wall of coating prepared by the present invention, in 2h, in sealed states, too at 35-37 DEG C
Under sunlight, cool down 9-12 DEG C than commercially available exterior coating, cooling effect is clearly.
Routine operation in operating procedure of the invention is well known to those skilled in the art, herein without repeating.
Technical solution of the present invention is described in detail in embodiment described above, it should be understood that the above is only
For specific embodiments of the present invention, it is not intended to restrict the invention, all any modifications made in spirit of the invention,
Supplement or similar fashion substitution etc., should all be included in the protection scope of the present invention.
Claims (9)
1. outer wall heat-insulating coating, it is characterised in that: including following ingredient and its parts by weight: 28-34 parts of modified acrylate emulsion,
10-15 parts of modified silicasol, 0.05-0.1 parts of aerosil powder, 0.1-0.4 parts of graphene, 3-7 parts of nano zine oxide,
2-3 parts of talcum powder, 2-3 parts of mica powder, 3-5 parts of sharp type titanium dioxide, 1.2-1.8 parts of White Carbon black, 0.1-0.15 parts of emulsifier, film forming
0.08-0.13 parts of agent, 0.1-0.15 parts of dispersing agent, 0.02-0.1 parts of defoaming agent, 0.1-0.5 parts of thickener, 7-12 parts of water.
2. outer wall heat-insulating coating according to claim 1, it is characterised in that: the partial size of the aerosil powder is
The ratio of 25-32nm, the aerosil powder and graphene is 1:2-5.
3. the preparation method of outer wall heat-insulating coating, including modified acrylate emulsion preparation, modified silicasol preparation, coating system
It is standby, it is characterised in that: the modified acrylate emulsion preparation step are as follows: by deionized water, mix monomer, ammonium persulfate and cream
Agent is added in reaction kettle, is heated up after fully emulsified, and constant temperature to lotion is interior after becoming basket to drip remaining ammonium persulfate and mixing
Monomer, and keep the temperature, it is cooled to room temperature, adjusts pH to get modified acrylate emulsion.
4. the preparation method of outer wall heat-insulating coating according to claim 3, it is characterised in that: methyl in the mix monomer
Methyl acrylate, butyl acrylate, acrylic acid, vinyltriethoxysilane weight ratio be 1:1.05-1.12:0.6-0.7:
4.7-5.1。
5. the preparation method of outer wall heat-insulating coating according to claim 3, it is characterised in that: the mix monomer is for the first time
Additive amount is the 18-22wt% of mix monomer gross mass, and the additive amount for the first time of the ammonium persulfate is ammonium persulfate gross mass
30-40wt%。
6. the preparation method of outer wall heat-insulating coating according to claim 3, it is characterised in that: the ammonium persulfate dosage is
The 0.2-0.4% of mix monomer weight, the emulsifier are the 0.6-0.8% of mix monomer weight.
7. the preparation method of outer wall heat-insulating coating according to claim 3, it is characterised in that: the emulsifier is weight ratio
For the allyl propylsultaine succinic acid dibasic acid esters sodium salt of 1:1.1-1.2:0.07-0.08, allyl octyl phenol polyoxyethylene ether and
Sucrose fatty ester.
8. the preparation method of outer wall heat-insulating coating according to claim 3, it is characterised in that: the modified silicasol preparation
Step are as follows: silane coupling agent KH-560 aqueous solution is added to water silica sol in the ratio of solid content 1:0.8-0.9(wt/wt)
In, add the dimethyl carbonate of KH-560 weight 0.62-0.68% and the p-aminophenyl second of KH-560 weight 0.042-0.046%
Acid reacts 3-5h at 62-70 DEG C to get modified silicasol.
9. the preparation method of outer wall heat-insulating coating according to claim 3, it is characterised in that: the coating preparation step
Are as follows: by formula measure modified acrylate emulsion, modified silicasol, aerosil powder, graphene, nano zine oxide,
Talcum powder, mica powder, sharp type titanium dioxide, White Carbon black, emulsifier, film forming agent, dispersing agent, defoaming agent, thickener, water, mixing are equal
It is even, it then grinds 2-3 times, filtering, the barrelling that discharges is to get insulating moulding coating.
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| CN109880409A (en) * | 2019-02-26 | 2019-06-14 | 成都市科创节能材料有限公司 | A kind of insulating mold coating for building and preparation method thereof |
| CN110437695A (en) * | 2019-08-14 | 2019-11-12 | 向军辉 | A kind of multi-functional photocatalyst aeroge coatings for furniture and preparation method thereof |
| CN111604237A (en) * | 2020-05-11 | 2020-09-01 | 中海油常州涂料化工研究院有限公司 | Preparation method of metal substrate heat-insulation protective coating structure and metal substrate heat-insulation protective coating structure |
| CN112251098A (en) * | 2020-11-03 | 2021-01-22 | 王洪磊 | Waterproof heat-insulation exterior wall coating for building and preparation method thereof |
| CN114479596A (en) * | 2022-02-25 | 2022-05-13 | 南昌交通学院 | White carbon black composite supermolecule reflection heat insulation material and preparation method thereof |
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| CN109880409A (en) * | 2019-02-26 | 2019-06-14 | 成都市科创节能材料有限公司 | A kind of insulating mold coating for building and preparation method thereof |
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