CN108624169A - Anti- infrared heat-insulated water paint nanometer titanium dioxide composite material and preparation process - Google Patents
Anti- infrared heat-insulated water paint nanometer titanium dioxide composite material and preparation process Download PDFInfo
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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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- 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
- C09D5/004—Reflecting paints; Signal paints
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K2003/2241—Titanium dioxide
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Abstract
Anti- infrared heat-insulated water paint nanometer titanium dioxide composite material, belong to the technical field of material, based on mass percentage, including nano-titanium dioxide 60 70%, gas-phase silica 5 15%, nanometer lithopone 5 15%, nanomete talc powder 5 10%, dispersant 1 5%, coupling agent 2 8%；Wherein, nano-titanium dioxide is rutile type nano titanic oxide, and gas-phase silica is hydrophilic nanoscale gas-phase silica, and nanometer lithopone is the mixture of nano barium sulfate and nano-zinc sulfide, nanomete talc powder is white fibrous, and coupling agent is aqueous amino silicane coupling agent.The invention also discloses the preparation processes of above-mentioned composite material, are applied in water paint, can reflect infrared emanation, achieve the purpose that heat insulation and heat control.
Description
Technical field
The invention belongs to the technical field of material, it is related to anti-infrared heat-insulated water paint nanometer titanium dioxide composite material
And its preparation process, it is applied in water paint, infrared emanation can be reflected, achieve the purpose that heat insulation and heat control.
Background technology
The wavelength of usual caloradiance is in 0.38~1000 μ m, but most of caloradiance is located at infrared wavelength
In the range of 0.76~20 μm.When solar irradiation is mapped on body surface, reflection, absorption and transmission are will produce, if a large amount of red
External wave is absorbed, then radiation energy is converted to thermal energy, and body surface temperature is made to increase, and hot then one side is transmitted to interior of articles, and one
Aspect is from body surface to external radiation, if it is possible to so that body surface is largely reflected and radiant heat, while can prevent it is hot inwardly
Portion transmits, then the rising of interior of articles temperature can be avoided or reduced, to achieve the purpose that heat insulation and heat control.
Water paint solvent for use is water, and has the property of paint, but harmless, free from environmental pollution, is one
Class environment-friendly type coating is to apply more a kind of coating at present.Nano-titanium dioxide is a kind of inorganic powder material of white, tool
There are larger specific surface area and higher surface energy, since its refraction coefficient is relatively high, different degrees of dissipate is generated to infrared light
It penetrates and diffusing reflection, but is single use and ideal effect is also not achieved, if itself and other nano materials are compound, it will play
The synergistic effect function of nano material, heat reflection efficiency will be significantly increased.This nano-titanium dioxide is compound anti-red
The material of outer heat-proof quality makes an addition in water paint, is prepared into reflective insulation coating, can have in effective reflected sunlight
The near infrared ray of fuel factor, body surface formed with reflective thermal radiation coating, can be applied to building, container, aircraft,
The outer surfaces such as ship, armored vehicle and the various body surfaces for needing anti-infrared heat insulation and heat control.Therefore, developing has high reflection
The nano-functional material of rate is the key that water paint realizes that its good reflection is heat-insulated, to the heat-insulated drop of the anti-infra-red radiation of body surface
Temperature has great importance.
Invention content
The purpose of the present invention is being directed to water paint, provide a kind of nano-titanium dioxide compound anti-infrared heat-barrier material, it can
Applied to the various target outer surfaces for needing anti-infrared heat insulation and heat control, achieve the effect that heat insulation and heat control.
The present invention be realize its purpose the technical solution adopted is that：
Anti- infrared heat-insulated water paint nanometer titanium dioxide composite material, based on mass percentage, including nanometer two
Titanium oxide 60-70%, gas-phase silica 5-15%, nanometer lithopone 5-15%, nanomete talc powder 5-10%, dispersant 1-5%,
Coupling agent 2-8%；Wherein, nano-titanium dioxide is rutile type nano titanic oxide, and gas-phase silica is hydrophilic nanoscale
Gas-phase silica, nanometer lithopone are the mixture of nano barium sulfate and nano-zinc sulfide, and mass ratio is (1-2)：(1-2),
Nanomete talc powder is white fibrous, and coupling agent is aqueous amino silicane coupling agent.
The dispersant is based on mass percentage, including polyacrylic acid sodium salt 40-60%, polyvinyl alcohol 20-40%, six
Sodium metaphosphate 15-30%.
The preparation process of anti-infrared heat-insulated water paint nanometer titanium dioxide composite material, includes the following steps：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) dispersant is added in absolute ethyl alcohol, obtains the ethanol solution of dispersant, is then added to deionization
In water, mixed solution is obtained, it is spare；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, high-speed stirred 80-100min obtains slurry；
(4) by slurry under the conditions of 80-100 DEG C expansion drying 4-6h, be crushed to grain size and be less than 50nm, obtain it is anti-it is infrared every
Heated aqueous coating special-purpose nanometer composite titania material.
In step (2), the mass ratio of dispersant and absolute ethyl alcohol is 1:(1-2).
Nanometer mixed powder material and the mass ratio of deionized water are 1:(3-4).
In step (2), dispersant is added in absolute ethyl alcohol, after being uniformly mixed with the rotating speed of 400-600rpm,
The ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 400-600rpm
In ionized water, after addition, it is further continued for stirring 15-25min, obtains mixed solution.
In step (3), the rotating speed of high-speed stirred is 1800-2200rpm.
The beneficial effects of the invention are as follows：
(1) nano-titanium dioxide composite powder material of the present invention is compounded by four kinds of nano inorganic materials, wherein nanometer
Titanium dioxide is main constituents, has high refractive index；Gas-phase silica has loose porous, hydrophilic, easy dispersion, gel
With it is prevented from caking；Nanometer lithopone is the mixture of barium sulfate and zinc sulphide, and whiteness is high, and acid-proof alkaline is stablized, and is not easily decomposed,
It is not easy to change；Nanomete talc powder is white fibrous, coating can be made to be formed network-like, not only to the adhesive force of coating, flexible
Property, impact strength have improve, also have lubricity, chemical property is stable, covering power is good, soft, good luster.These four are received
Rice flour body compounds, different properties, and crystal structure is different, has synergistic effect mechanism therebetween, gives full play to its nano functional material
Material has larger specific surface area and surface energy, and compounding is realized generates scattering and irreflexive complementation to the sunlight of different wave length
Synergistic effect, collective effect reach anti-infrared heat-insulated ideal effect；
(2) the anti-infrared heat insulation nano composite titania material of the present invention is that water paint is special, dispersant used by
Polyacrylic acid sodium salt, polyvinyl alcohol and calgon compound, and not only have good point after the composition compounding of dispersant
Performance is dissipated, it is aqueous amino silane also to have preferable grind -aiding effect, coupling agent, and hydrophilicity is relatively good, is not easy in water point
Solution, nanometer titanium dioxide composite material of the present invention can be applied in various water paints, be the water paint universal product, compatibility
It is preferable with dispersibility；
(3) the anti-infrared heat insulation nano composite titania material of the present invention, simple production process, environmental-protecting performance is preferable, is
Nano green chemical products, has wide range of applications.
Specific implementation mode
With reference to specific embodiment, the present invention is further illustrated.
One, specific embodiment
Embodiment 1
5 parts of nanometer titanium dioxide composite material, 95 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：60% nanometer titanium dioxide
Titanium, 13% gas-phase silica, 13% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1 ratio, is stirred with the rotating speed of 500rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 500rpm
In deionized water, after addition, it is further continued for stirring 20min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:3；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 2000rpm high-speed stirred 90min, obtains slurry；
(4) by slurry under the conditions of 100 DEG C expansion drying 4h, be crushed to grain size and be less than 50nm, obtain anti-infrared insulating water
Property coating special-purpose nanometer composite titania material.
Embodiment 2
10 parts of nanometer titanium dioxide composite material, 90 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：60% nanometer titanium dioxide
Titanium, 13% gas-phase silica, 13% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 2 ratio, is stirred with the rotating speed of 400rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 400rpm
In deionized water, after addition, it is further continued for stirring 25min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:4；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 2200rpm high-speed stirred 80min, obtains slurry；
(4) by slurry under the conditions of 80 DEG C expansion drying 6h, be crushed to grain size and be less than 50nm, obtain anti-infrared heat-insulated aqueous
Coating special-purpose nanometer composite titania material.
Embodiment 3
15 parts of nanometer titanium dioxide composite material, 85 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：60% nanometer titanium dioxide
Titanium, 13% gas-phase silica, 13% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1.5 ratio, is stirred with the rotating speed of 600rpm
After uniformly, the ethanol solution of dispersant is obtained, then the ethanol solution of dispersant is added under the conditions of 600rpm
Into deionized water, after addition, it is further continued for stirring 15min, obtains mixed solution, it is spare；Nanometer mixed powder material with
The mass ratio of deionized water is 1:3.5；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 1800rpm high-speed stirred 100min, obtains slurry；
(4) by slurry under the conditions of 90 DEG C expansion drying 5h, be crushed to grain size and be less than 50nm, obtain anti-infrared heat-insulated aqueous
Coating special-purpose nanometer composite titania material.
Embodiment 4
5 parts of nanometer titanium dioxide composite material, 95 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：65% nanometer titanium dioxide
Titanium, 10.5% gas-phase silica, 10.5% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1 ratio, is stirred with the rotating speed of 500rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 500rpm
In deionized water, after addition, it is further continued for stirring 20min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:3；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 2100rpm high-speed stirred 95min, obtains slurry；
(4) by slurry under the conditions of 95 DEG C expansion drying 4.5h, be crushed to grain size and be less than 50nm, obtain anti-infrared insulating water
Property coating special-purpose nanometer composite titania material.
Embodiment 5
10 parts of nanometer titanium dioxide composite material, 90 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：65% nanometer titanium dioxide
Titanium, 10.5% gas-phase silica, 10.5% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1 ratio, is stirred with the rotating speed of 500rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 500rpm
In deionized water, after addition, it is further continued for stirring 23min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:3；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 1900rpm high-speed stirred 85min, obtains slurry；
(4) by slurry under the conditions of 85 DEG C expansion drying 5.5h, be crushed to grain size and be less than 50nm, obtain anti-infrared insulating water
Property coating special-purpose nanometer composite titania material.
Embodiment 6
15 parts of nanometer titanium dioxide composite material, 85 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：65% nanometer titanium dioxide
Titanium, 10.5% gas-phase silica, 10.5% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1 ratio, is stirred with the rotating speed of 500rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 500rpm
In deionized water, after addition, it is further continued for stirring 20min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:3；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 2000rpm high-speed stirred 90min, obtains slurry；
(4) by slurry under the conditions of 100 DEG C expansion drying 4h, be crushed to grain size and be less than 50nm, obtain anti-infrared insulating water
Property coating special-purpose nanometer composite titania material.
Embodiment 7
5 parts of nanometer titanium dioxide composite material, 95 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：70% nanometer titanium dioxide
Titanium, 8% gas-phase silica, 8% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1 ratio, is stirred with the rotating speed of 500rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 500rpm
In deionized water, after addition, it is further continued for stirring 18min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:3；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 2000rpm high-speed stirred 96min, obtains slurry；
(4) by slurry under the conditions of 96 DEG C expansion drying 4h, be crushed to grain size and be less than 50nm, obtain anti-infrared heat-insulated aqueous
Coating special-purpose nanometer composite titania material.
Embodiment 8
10 parts of nanometer titanium dioxide composite material, 90 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：70% nanometer titanium dioxide
Titanium, 8% gas-phase silica, 8% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1 ratio, is stirred with the rotating speed of 500rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 500rpm
In deionized water, after addition, it is further continued for stirring 20min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:3；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 2000rpm high-speed stirred 90min, obtains slurry；
(4) by slurry under the conditions of 100 DEG C expansion drying 4h, be crushed to grain size and be less than 50nm, obtain anti-infrared insulating water
Property coating special-purpose nanometer composite titania material.
Embodiment 9
15 parts of nanometer titanium dioxide composite material, 85 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass percentage are：70% nanometer titanium dioxide
Titanium, 8% gas-phase silica, 8% nanometer of lithopone, 6% nanomete talc powder, 3% dispersant and 5% coupling agent.
Above-mentioned nanometer titanium dioxide composite material is prepared as follows：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer is obtained
Mixed powder material；
(2) in mass ratio 1:Dispersant is added in absolute ethyl alcohol by 1 ratio, is stirred with the rotating speed of 500rpm
After even, the ethanol solution of dispersant is obtained, is then added to the ethanol solution of dispersant under the conditions of 500rpm
In deionized water, after addition, it is further continued for stirring 20min, obtains mixed solution, it is spare；Nanometer mixed powder material with go
The mass ratio of ionized water is 1:3；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixing that step (2) obtains
In solution, coupling agent is then added while stirring, after addition, with 2000rpm high-speed stirred 90min, obtains slurry；
(4) by slurry under the conditions of 100 DEG C expansion drying 4h, be crushed to grain size and be less than 50nm, obtain anti-infrared insulating water
Property coating special-purpose nanometer composite titania material.
Comparative example 1
Water-based acrylic resin paint.
Comparative example 2
5 parts of nanometer titanium dioxide composite material, 95 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass content are：92% nano-titanium dioxide,
3% dispersant and 5% coupling agent.
Comparative example 3
10 parts of nanometer titanium dioxide composite material, 90 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass content are：92% nano-titanium dioxide,
3% dispersant and 5% coupling agent.
Comparative example 4
15 parts of nanometer titanium dioxide composite material, 85 parts of water-based acrylic resin coating is taken after being uniformly mixed, to be formed
Anti- infrared insulating moulding coating, wherein nanometer titanium dioxide composite material composition and its mass content are：92% nano-titanium dioxide,
3% dispersant and 5% coupling agent.
Two, application test
1, the anti-infrared insulating moulding coating in above-described embodiment and comparative example, the test plate (panel) base material of prepares coating and surface treatment are pressed
It is carried out according to standard GB/T/T 9271, sun luminous reflectance and hemispherical emissivity test test plate (panel) prepare GB/T according to national standards
25261-2010 is carried out, and the sun luminous reflectance and hemispherical emissivity of coating test GB/T 25261-2010 according to national standards
It carries out, the Solar reflectance of coating, with reference to U.S. army mark MIL-E-46136, is tested.Test result is shown in Table 1.
The anti-infrared Heat-Insulation Test result of 1 coating of table
By 1 test result of table it is found that by comparing example experiment, as content of the nano-titanium dioxide in coating increases
Add, heat reflectivity, sun luminous reflectance and the hemispherical emissivity of coating improve, and illustrate that nano-titanium dioxide has centainly
Anti- infrared heat-blocking action；By the experiment of embodiment, by nano-titanium dioxide compound gas-phase silica, nanometer lithopone and
Nanomete talc powder, heat reflectivity, sun luminous reflectance and hemispherical emissivity are obviously carried than corresponding adding proportion in comparative example
Gao Liao, in embodiment 3, highest heat reflectivity have reached 92.4%, and sun luminous reflectance and hemispherical emissivity are 0.88；By
Embodiment is tested, and is improved with the content of titanium dioxide in composite nano-powder, the content of gas-phase silica and nanometer lithopone
It reduces, heat reflectivity, sun luminous reflectance and the hemispherical emissivity of coating decrease instead, and this also illustrates gas phase hard charcoals
Black, nanometer lithopone and nanomete talc powder infrared heat-insulated have synergistic effect to the anti-of nano-titanium dioxide.The present embodiment
Test result show composite granule in water-based acrylic resin coating additive amount be 15wt% when, heat reflectivity is all higher than
90%, sun luminous reflectance and hemispherical emissivity are also all 0.85 or more.
2, the compounding that the present invention passes through addition nanomete talc powder and nano-titanium dioxide, nanometer lithopone, gas-phase silica
And the control of ratio, reflectivity is not only increased, due also to nanomete talc powder is threadiness, during film forming, with monomer
Substance can be crosslinked and reticulate, and the adhesive force of coating, impact strength, flexibility is made to improve.
By taking embodiment 3 as an example.
With by nanometer titanium dioxide composite material form and its mass percentage is：66% nano-titanium dioxide,
13% gas-phase silica, 13% nanometer of lithopone, 3% dispersant and 5% coupling agent are control 1.
With by nanometer titanium dioxide composite material form and its mass percentage is：79% nano-titanium dioxide,
13% nanometer of lithopone, 3% dispersant and 5% coupling agent are control 2.
With by nanometer titanium dioxide composite material form and its mass percentage is：79% nano-titanium dioxide,
13% gas-phase silica, 3% dispersant and 5% coupling agent are control 3.
GB/T 9271 is tested according to national standards for the test plate (panel) base material of prepares coating and surface treatment, sun light reflection
It is carried out than preparing GB/T 25261-2010 according to national standards with hemispherical emissivity test test plate (panel), the sun luminous reflectance of coating
GB/T 25261-2010 are carried out according to national standards with hemispherical emissivity test, the Solar reflectance of coating, with reference to army of the U.S.
MIL-E-46136 is marked, is tested.The measurement of adhesive force is according to GB/T 9286-1998, and flexible measurement is according to GB/T
1731-93, impact strength are carried out according to GB/T 1732-93.Test result is shown in Table 2.
2 coating performance test result of table
As shown in Table 2, by nano-titanium dioxide, nanometer lithopone, gas-phase silica and nanomete talc powder complex material
The effect of heat reflectivity is best；After nanomete talc powder is added, it is compared to and is added without the reflectivity of nanomete talc powder and obtains
It improves, and the adhesive force of paint film, impact strength, flexibility are also significantly improved.
3, the addition of nanometer lithopone can significantly reduce due to ultraviolet light and caused by coating aging speed, to carrying
The weatherability of high coating has certain advantage；It is compounded with nano-titanium dioxide, the effect of body surface reflective thermal can be improved,
Object is set to cool down；Due also to nanometer lithopone acid-proof alkaline preferably and automatic cleaning action, to improve coating acid and alkali-resistance
Performance and resistance to soiling have notable contribution.
By taking embodiment 3 as an example, with by nanometer titanium dioxide composite material form and its mass percentage is：73% receives
Rice titanium dioxide, 13% gas-phase silica, 6% nanomete talc powder, 3% dispersant and 5% coupling agent are control.
Be prepared into coating by above-mentioned, the test plate (panel) base material of prepares coating and surface treatment according to national standards GB/T 9271 into
Row test.Ageing-resistant performance is tested according to GB/T 1766-2008, and resistance to soiling is surveyed according to GB/T 3810.14-2016
Examination.Test result is shown in Table 3.
3 coating performance test result of table
Note：It is ageing-resistant it is not blistering, do not fall off best, coating powder turns to 0 grade；Discoloration is 1 grade；Loss of gloss is 1 grade.
As shown in Table 3, the present invention makes the anti-aging of coating, resistance to soiling and resistance to acid and alkali by adding nanometer lithopone
It can be obtained for and significantly improve.
Claims (7)
1. anti-infrared heat-insulated water paint nanometer titanium dioxide composite material, which is characterized in that based on mass percentage, packet
Include nano-titanium dioxide 60-70%, gas-phase silica 5-15%, nanometer lithopone 5-15%, nanomete talc powder 5-10%, dispersion
Agent 1-5%, coupling agent 2-8%；Wherein, nano-titanium dioxide is rutile type nano titanic oxide, and gas-phase silica is hydrophilic
Property nanoscale gas-phase silica, nanometer lithopone be nano barium sulfate and nano-zinc sulfide mixture, nanomete talc powder is white
Color fibre shape, coupling agent are aqueous amino silicane coupling agent.
2. anti-infrared heat-insulated water paint nanometer titanium dioxide composite material according to claim 1, which is characterized in that
The dispersant is based on mass percentage, including polyacrylic acid sodium salt 40-60%, polyvinyl alcohol 20-40%, calgon
15-30%.
3. the preparation process of anti-infrared heat-insulated water paint nanometer titanium dioxide composite material as described in claim 1,
It is characterized in that, includes the following steps：
(1) after taking nano-titanium dioxide, gas-phase silica, nanometer lithopone, nanomete talc powder to be ground, nanometer mixing is obtained
Powder body material；
(2) dispersant is added in absolute ethyl alcohol, obtains the ethanol solution of dispersant, is then added to deionized water
In, mixed solution is obtained, it is spare；
(3) under stirring, the nanometer mixed powder material that step (1) obtains is added to the mixed solution that step (2) obtains
In, coupling agent is then added while stirring, after addition, high-speed stirred 80-100min obtains slurry；
(4) by slurry under the conditions of 80-100 DEG C expansion drying 4-6h, be crushed to grain size and be less than 50nm, obtain anti-infrared insulating water
Property coating special-purpose nanometer composite titania material.
4. the preparation process of anti-infrared heat-insulated water paint nanometer titanium dioxide composite material according to claim 3,
It is characterized in that, in step (2), the mass ratio of dispersant and absolute ethyl alcohol is 1：(1-2).
5. the preparation process of anti-infrared heat-insulated water paint nanometer titanium dioxide composite material according to claim 3,
It is characterized in that, nanometer mixed powder material and the mass ratio of deionized water are 1:(3-4).
6. the preparation process of anti-infrared heat-insulated water paint nanometer titanium dioxide composite material according to claim 3,
It is characterized in that, in step (2), dispersant is added in absolute ethyl alcohol, is uniformly mixed with the rotating speed of 400-600rpm
Afterwards, the ethanol solution of dispersant is obtained, then the ethanol solution of dispersant is added under the conditions of 400-600rpm
Into deionized water, after addition, it is further continued for stirring 15-25min, obtains mixed solution.
7. the preparation process of anti-infrared heat-insulated water paint nanometer titanium dioxide composite material according to claim 3,
It is characterized in that, in step (3), the rotating speed of high-speed stirred is 1800-2200rpm.
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| CN201810501570.7A CN108624169B (en) | 2018-05-23 | 2018-05-23 | Nano titanium dioxide composite material for anti-infrared heat-insulation water-based paint and preparation process thereof |
| ZA2018/05910A ZA201805910B (en) | 2018-05-23 | 2018-09-04 | Nano tio2 composite for infrared reflective thermal-insulating water-based coating and a process for its preparation |
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| CN108624169B (en) | 2020-08-11 |
| ZA201805910B (en) | 2019-06-26 |
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