CN105969021A - {0><}0{>Reflective, insulated and hydrophobic coating - Google Patents

{0><}0{>Reflective, insulated and hydrophobic coating Download PDF

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Publication number
CN105969021A
CN105969021A CN201610318541.8A CN201610318541A CN105969021A CN 105969021 A CN105969021 A CN 105969021A CN 201610318541 A CN201610318541 A CN 201610318541A CN 105969021 A CN105969021 A CN 105969021A
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agent
kilograms
hydrophobic coating
reflective insulation
dispersant
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CN105969021B (en
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王晓华
岳都元
施建军
王茂智
徐斌
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YANTAI JIALONG NANOMETER INDUSTRY Co Ltd
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YANTAI JIALONG NANOMETER INDUSTRY Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • 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
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/004—Reflecting paints; Signal paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

{0><}0{>The invention relates to a reflective, insulated and hydrophobic coating which is prepared from the following ingredients in percentage by weight: <0}{0><}0{>40-55wt% of acroleic acid elastic emulsion, 2-5wt% of hydrophobic self-cleaning auxiliary, 0.1-0.5wt% of a defoaming agent, 0.2-0.6wt% of a dispersant, 0.1-0.5wt% of a preservative agent, 0.2-0.6wt% of a flatting agent, 0.5-1.1wt% of a thickening agent, <0}{0><}0{>0-0.3wt% of a wetting agent, 0-wt1% of a film-forming auxiliary, 0.1-1wt% of a multifunctional auxiliary, 1-3wt% of an antifreezing agent, 10-20wt% of pigment and 2-5wt% of hollow glass beads. <0}{0><}0{>The reflective, insulated and hydrophobic coating has the beneficial effects that special modified resin is adopted, so that the elasticity and the self-cleaning effect are favorable; the hollow beads are adopted, and reasonable gradation of particle sizes is performed, so that the specific gravity of a product is light, a dry film with thickness of 0.2-0.3mm is capable of achieving a total heat reflection ray reflection index not less than 85-90%.

Description

A kind of reflective insulation hydrophobic coating
Technical field
The present invention relates to a kind of coating, particularly relate to a kind of hydrophobic coating, belong to technical field of coatings.
Background technology
City high rise building stands in great numbers now, and in order to attractive in appearance, exterior coating arises at the historic moment；Along with country is to energy-saving ring The requirement protected, functional exterior wall reflective thermal insulation coating is the most increasingly approved by everybody.But outside the most common Wall reflective heat-insulation paint also has many undesirable places, and first they not can overcome the disadvantages that tiny the splitting of body of wall Seam.
Chinese patent CN201310684302.0 discloses a kind of elastic automatically cleaning reflective heat-insulation paint, tool Make up body of wall fine cracks, reflective insulation and self-cleaning effect, but hydrophobic effect do not described, The water infiltration by coating surface, can lower the reflective insulation effect of coating, Chinese patent CN201210423418.4 discloses a kind of nano self-cleaning exterior coating, and emulsion used is nano-silicon tree Fat, relatively costly, and not can overcome the disadvantages that body of wall fine cracks, keep the globality of coating, good preventing Infiltration of rainwater, reflective insulation performance described in this patent is to provide by titanium dioxide is single, single The reflective insulation performance of titanium dioxide is good apparently without the performance after titanium dioxide and hollow glass microbead grating.
Summary of the invention
The present invention is directed to the deficiency that existing exterior coating exists, it is provided that a kind of reflective insulation hydrophobic coating.
The technical scheme is that
A kind of reflective insulation hydrophobic coating, it is characterised in that include the component of following percentage by weight: Acrylic elastic emulsion 40～55wt%, hydrophobic automatically cleaning auxiliary agent 2～5wt%, defoamer 0.10～ 0.5wt%, dispersant 0.2～0.6wt%, preservative 0.1～0.5wt%, levelling agent 0.2～0.6wt%, Thickening agent 0.5～1.1wt%, wetting agent 0～0.3wt%, coalescents 0～1wt%, multifunctional assistant 0.1～1wt%, antifreezing agent 1～3wt%, pigment 10～20wt%, hollow glass microbead 2～5wt%, remaining Amount is water.
Further, described acrylic elastic emulsion is divided by 100 parts of water, monomer 40 parts, silicon dioxide Dissipate liquid 5 parts, cross-linking agent N hydroxymethyl acrylamide 0.08 part, initiator ammonium persulfate 0.08 part, breast Agent 0.3 part, is prepared from through semi-continuous emulsion polymerization, and wherein said monomer includes the first of 60wt% Base butyl acrylate, the methyl methacrylate of 36wt% and the methacrylic acid of 4wt%, described emulsifying agent Middle dodecylbenzene sodium sulfonate, OP-9, OP-21 respectively account for 1/3.
Further, described hydrophobic automatically cleaning auxiliary agent is modified organic silicon class material, and particle diameter is 5～10nm.
Further, described defoamer is modified polyorganosiloxane class defoamer, and described dispersant is hydrophobically modified Ammonium salt dispersant, described preservative is the preservative without formaldehyde and heavy metal, and described levelling agent is poly-ammonia Esters levelling agent, described thickening agent is alkali swelling class thickening agent, and described wetting agent is surfactant, institute Stating coalescents is alcohol ester 12, and described multifunctional assistant is organic ammonium, and described antifreezing agent is propylene glycol.
Further, described defoamer is one or both in A-10, NXZ, F-111, described dispersion Agent be XG505,5027, one in OROTAN731A, described preservative is in LXE, K14 Kind, described levelling agent is the one in RM2020, RHEOOLATE278, described thickening agent be RZ-60, One in RHEOLATE425, described wetting agent is the one in DW-CL3, DW-15, described many merits Can auxiliary agent be AMP-95.
Further, the HLB of described dispersant is 6～10, and the HLB of described wetting agent is 8～12.
Further, described pigment be titanium dioxide, one or more in zinc oxide or barium sulfate.
Further, the particle diameter of described hollow glass microbead is 1～85 micron, density be 0.125～ 0.6g/cc。
The invention has the beneficial effects as follows:
1) use special modified resin, there is the most elastic and automatically cleaning effect；
2) use hollow glass microbead and carry out the rational gradation composition of particle diameter so that product light specific gravity, build 0.2～0.3mm just can reach the total reflectivity 85～more than 90% to heat reflection line；
3) elongation at break >=280% of gained coating of the present invention, contact angle >=120, sunlight reflectivity >= 0.85, hemispherical emissivity >=0.87, stain resistance≤15, elastic, weatherability and stain resistance are good, paint Film is fine and close, and build is little, and reflective insulation is effective, makes sunlight reflectivity and the hemispherical reflectance will not Significantly reducing because of the growth of the time of use, keep the lasting of reflective insulation performance, trap heat passes Enter indoor, reduce internal temperature, save the energy, increase indoor comfort degree.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with example, example is served only for explaining this Invention, is not intended to limit the scope of the present invention.
Embodiment 1:
A kind of reflective insulation hydrophobic coating, including the component of following percentage by weight: self-control acrylic acid is elastic Emulsion 40wt%, defoamer A-10 0.1wt%, F-111 0.1wt%, dispersant XG505 0.2wt%, Preservative LXE 0.1wt%, levelling agent RM2020 0.2wt%, thickening agent RZ-60 0.5wt%, multi-functional Auxiliary agent A MP-95 0.1wt%, the water-repelling agent automatically cleaning auxiliary agent 88AD 2wt% of Dow Corning Corporation, antifreezing agent Propylene glycol 1wt%, pigment titanium white 10wt%, particle diameter 1～the hollow glass microbead 2wt% of 20 microns；
The preparation method of above-mentioned reflective insulation hydrophobic coating is as follows:
1) water of 100 kilograms is joined in dispersion cylinder, start blender with under the rotating speed of 800 revs/min successively Add 10 kilograms of propylene glycol, preservative LXE 1 kilogram, dispersant XG505 2 kilograms, defoamer A-10 1 kilogram, multifunctional assistant AMP-95 0.5 kilogram, disperse 5～10 minutes；
2) under 300r/min rotating speed, Rutile type titanium dioxide 100 kilograms it is slowly added to wherein, at a high speed Dispersion, rotating speed 1000r/min, 40～60 minutes, reach fineness less than 40 microns；
3) self-control acrylic elastic emulsion: first take 500 kg of water and 2 kilograms of emulsifying agents join pre-emulsification In device, under stirring condition, it is added thereto to the monomer of 400 kilograms, dodecylbenzene sodium sulfonate in emulsifying agent, OP-9, OP-21 respectively account for 1/3, and monomer includes the methyl of the butyl methacrylate of 60wt%, 36wt% Acrylic acid methyl ester. and the methacrylic acid of 4wt%, obtain pre-emulsion after stirring 30min under 800r/min, Take 500 kg of water, 4 kilograms of emulsifying agents and 300 kilograms of pre-emulsions afterwards and join in reactor, keep Mixing speed is, after 200r/min is warming up to 85 DEG C, to be added thereto to initiator ammonium persulfate 600g and friendship Connection agent N hydroxymethyl acrylamide 800g starts reaction, reacts remaining pre-emulsion, over cure after starting Acid ammonium 200g and silica dispersions 50 kilograms constant speed in 2.5 hours drop in reactor, instead Answer temperature to be maintained at 85 DEG C, be incubated 1 hour and obtain acrylic elastic emulsion；
4) under 300r/min rotating speed, to step 2) mixture in add step 3) self-control third of gained Olefin(e) acid elastic emulsion 400 kilograms, stirs；
5) under 300r/min rotating speed, to step 4) products therefrom adds defoamer F-111 1 kilogram, It is distributed to without oil droplet；
6) under 300r/min rotating speed, to step 5) products therefrom adds the double glazing of 1～20 micron Microballon 20 kilograms, is uniformly dispersed；
7) under 300r/min rotating speed, to step 6) products therefrom adds hydrophobic automatically cleaning auxiliary agent 20 kilograms, It is uniformly dispersed；
8) under 300r/min rotating speed, to step 7) products therefrom adds multifunctional assistant AMP-95 0.5 Kilogram, add thickening agent RZ-60 5 kilograms, levelling agent RM2020 2 kilograms, and remaining water adjusts To appropriate viscosity.
Embodiment 2:
A kind of reflective insulation hydrophobic coating, including the component of following percentage by weight: self-control acrylic acid is elastic Emulsion 50wt%, defoamer NXZ 0.1wt%, F-111 0.1wt%, dispersant 5027 0.4wt%, Preservative K14 0.3wt%, levelling agent RHEOOLATE278 0.4wt%, thickening agent RHEOLATE425 0.8wt%, wetting agent DW-CL3 0.3wt%, coalescents alcohol ester 12 0.5wt%, multifunctional assistant AMP-95 0.5wt%, the hydrophobic automatically cleaning auxiliary agent 88AD 2.5wt% of Dow Corning Corporation, antifreezing agent propylene glycol 2wt%, pigment titanium white 10wt%, pigment zinc oxide 5wt%, particle diameter 20～the double glazing of 40 microns Microballon 5wt%；
The preparation method of above-mentioned reflective insulation hydrophobic coating is as follows:
1) water of 100 kilograms is joined in dispersion cylinder, start blender with under the rotating speed of 800 revs/min successively Add 20 kilograms of propylene glycol, preservative K14 3 kilograms, dispersant 5,027 4 kilograms, defoamer NXZ 1.0 kilograms, multifunctional assistant AMP-95 2 kilograms, disperse 5～10 minutes；
2) under 300r/min rotating speed, titanium dioxide 100 kilograms, pigment zinc oxide 50 it are slowly added to wherein Kilogram, high speed dispersion, rotating speed 1000r/min, 40～60 minutes, reach fineness less than 40 microns；
3) self-control acrylic elastic emulsion: first take 500 kg of water and 2 kilograms of emulsifying agents join pre-emulsification In device, under stirring condition, it is added thereto to the monomer of 400 kilograms, dodecylbenzene sodium sulfonate in emulsifying agent, OP-9, OP-21 respectively account for 1/3, and monomer includes the methyl of the butyl methacrylate of 60wt%, 36wt% Acrylic acid methyl ester. and the methacrylic acid of 4wt%, obtain pre-emulsion after stirring 30min under 800r/min, Take 500 kg of water, 4 kilograms of emulsifying agents and 300 kilograms of pre-emulsions afterwards and join in reactor, keep Mixing speed is, after 200r/min is warming up to 85 DEG C, to be added thereto to initiator ammonium persulfate 600g and friendship Connection agent N hydroxymethyl acrylamide 800g starts reaction, reacts remaining pre-emulsion, over cure after starting Acid ammonium 200g and silica dispersions 50 kilograms constant speed in 2.5 hours drop in reactor, instead Answer temperature to be maintained at 85 DEG C, be incubated 1 hour and obtain acrylic elastic emulsion；
4) under 300r/min rotating speed, to step 2) mixture in add step 3) self-control third of gained Olefin(e) acid elastic emulsion 500 kilograms, stirs；
5) under 300r/min rotating speed, to step 4) products therefrom adds defoamer F-111 1.0 kilograms, It is distributed to without oil droplet；
6) under 300r/min rotating speed, to step 5) products therefrom adds the double glazing of 20～40 microns Microballon 50 kilograms, is uniformly dispersed；
7) under 300r/min rotating speed, to step 6) to add hydrophobic automatically cleaning auxiliary agent 25 in products therefrom public Jin, is uniformly dispersed；
8) under 300r/min rotating speed, to step 7) products therefrom adds multifunctional assistant AMP-95 3 Kilogram, add thickening agent RHEOLATE425 8 kilograms, levelling agent RHEOOLATE278 4 kilograms, and Remaining water, is adjusted to appropriate viscosity.
Embodiment 3:
A kind of reflective insulation hydrophobic coating, including the component of following percentage by weight: self-control acrylic acid is elastic Emulsion 55wt%, defoamer F-111 0.5wt%, dispersant OROTAN731A 0.6wt%, preservative K14 0.5wt%, levelling agent RM2020 0.6wt%, thickening agent RZ-60 1.1wt%, wetting agent DW-15 0.3wt%, Coalescents alcohol ester 12 1wt%, multifunctional assistant AMP-95 1wt%, Dow Corning Corporation water-repelling agent from Cleaning additive Coatosil2059 3wt%, antifreezing agent propylene glycol 2wt%, pigment barium sulfate 5wt%, titanium white Powder 10wt%, particle diameter 1～the hollow glass microbead 3wt% of 40 microns, particle diameter 60～the hollow of 85 microns Glass microballoon 1wt%；
The preparation method of above-mentioned reflective insulation hydrophobic coating is as follows:
1) water of 100 kilograms is joined in dispersion cylinder, start blender with under the rotating speed of 800 revs/min successively Add 20 kilograms of propylene glycol, preservative K14 5 kilograms, dispersant OROTAN731A 6 kilograms, disappear Infusion F-111 2.5 kilograms, multifunctional assistant AMP-95 4 kilograms, disperse 5～10 minutes；
2) under 300r/min rotating speed, titanium dioxide 100 kilograms, pigment barium sulfate 50 it are slowly added to wherein Kilogram, high speed dispersion, rotating speed 1000r/min, 40～60 minutes, reach fineness less than 40 microns；
3) self-control acrylic elastic emulsion: first take 500 kg of water and 2 kilograms of emulsifying agents join pre-emulsification In device, under stirring condition, it is added thereto to the monomer of 400 kilograms, dodecylbenzene sodium sulfonate in emulsifying agent, OP-9, OP-21 respectively account for 1/3, and monomer includes the methyl of the butyl methacrylate of 60wt%, 36wt% Acrylic acid methyl ester. and the methacrylic acid of 4wt%, obtain pre-emulsion after stirring 30min under 800r/min, Take 500 kg of water, 4 kilograms of emulsifying agents and 300 kilograms of pre-emulsions afterwards and join in reactor, keep Mixing speed is, after 200r/min is warming up to 85 DEG C, to be added thereto to initiator ammonium persulfate 600g and friendship Connection agent N hydroxymethyl acrylamide 800g starts reaction, reacts remaining pre-emulsion, over cure after starting Acid ammonium 200g and silica dispersions 50 kilograms constant speed in 2.5 hours drop in reactor, instead Answer temperature to be maintained at 85 DEG C, be incubated 1 hour and obtain acrylic elastic emulsion；
4) under 300r/min rotating speed, to step 2) mixture in add step 3) self-control third of gained Olefin(e) acid elastic emulsion 550 kilograms, stirs；
5) under 300r/min rotating speed, to step 4) products therefrom adds defoamer F-111 2.5 kilograms, It is distributed to without oil droplet；
6) under 300r/min rotating speed, to step 5) products therefrom adds particle diameter 1～the hollow of 40 microns The hollow glass microbead 10 kilograms of glass microballoon 30 kilograms, particle diameter 60～85 microns, is uniformly dispersed；
7) under 300r/min rotating speed, to step 6) products therefrom adds hydrophobic automatically cleaning auxiliary agent 30 kilograms, It is uniformly dispersed；
8) under 300r/min rotating speed, to step 7) products therefrom adds multifunctional assistant AMP-95 6 Kilogram, add thickening agent RZ-60 11 kilograms, levelling agent RM2020 6 kilograms, and remaining water, adjust Whole to appropriate viscosity.
Embodiment 4:
A kind of reflective insulation hydrophobic coating, including the component of following percentage by weight: self-control acrylic acid is elastic Emulsion 50wt%, defoamer F-111 0.1wt%, dispersant OROTAN731A 0.5wt%, preservative K14 0.1wt%, levelling agent RM2020 0.2wt%, thickening agent RZ-60 0.8wt%, wetting agent DW-15 0.1wt%, Coalescents alcohol ester 12 0.6wt%, multifunctional assistant AMP-95 0.45wt%, Dow Corning Corporation dredge Water preparation automatically cleaning auxiliary agent Silblock WMS 3wt%, antifreezing agent propylene glycol 1.8wt%, pigment titanium white 16wt%, barium sulfate 2wt%, particle diameter 10～the hollow glass microbead 3.5wt% of 20 microns；
The preparation method of above-mentioned reflective insulation hydrophobic coating is as follows:
1) water of 100 kilograms is joined in dispersion cylinder, start blender with under the rotating speed of 800 revs/min successively Add 18 kilograms of propylene glycol, preservative K14 1 kilogram, dispersant OROTAN731A 5 kilograms, disappear Infusion F-111 0.5 kilogram, multifunctional assistant AMP-95 2 kilograms, disperse 5～10 minutes；
2) under 300r/min rotating speed, pigment titanium white 160 kilograms, barium sulfate 20 it are slowly added to wherein Kilogram, high speed dispersion, rotating speed 1000r/min, 40～60 minutes, reach fineness less than 40 microns；
3) self-control acrylic elastic emulsion: first take 500 kg of water and 2 kilograms of emulsifying agents join pre-emulsification In device, under stirring condition, it is added thereto to the monomer of 400 kilograms, dodecylbenzene sodium sulfonate in emulsifying agent, OP-9, OP-21 respectively account for 1/3, and monomer includes the methyl of the butyl methacrylate of 60wt%, 36wt% Acrylic acid methyl ester. and the methacrylic acid of 4wt%, obtain pre-emulsion after stirring 30min under 800r/min, Take 500 kg of water, 4 kilograms of emulsifying agents and 300 kilograms of pre-emulsions afterwards and join in reactor, keep Mixing speed is, after 200r/min is warming up to 85 DEG C, to be added thereto to initiator ammonium persulfate 600g and friendship Connection agent N hydroxymethyl acrylamide 800g starts reaction, reacts remaining pre-emulsion, over cure after starting Acid ammonium 200g and silica dispersions 50 kilograms constant speed in 2.5 hours drop in reactor, instead Answer temperature to be maintained at 85 DEG C, be incubated 1 hour and obtain acrylic elastic emulsion；
4) under 300r/min rotating speed, to step 2) mixture in add step 3) self-control third of gained Olefin(e) acid elastic emulsion 500 kilograms, stirs；
5) under 300r/min rotating speed, to step 4) products therefrom adds defoamer F-111 0.5 kilogram, It is distributed to without oil droplet；
6) under 300r/min rotating speed, to step 5) products therefrom adds the double glazing of 10～20 microns Microballon 35 kilograms, is uniformly dispersed；
7) under 300r/min rotating speed, to step 6) products therefrom adds hydrophobic automatically cleaning auxiliary agent 30 kilograms, It is uniformly dispersed；
8) under 300r/min rotating speed, to step 7) products therefrom adds multifunctional assistant AMP-95 2.5 Kilogram, add thickening agent RZ-60 8 kilograms, levelling agent RM2020 2 kilograms, and remaining 175 public affairs Jin water, is adjusted to appropriate viscosity.
Embodiment 5:
A kind of reflective insulation hydrophobic coating, including the component of following percentage by weight: self-control acrylic acid is elastic Emulsion 55wt%, defoamer NXZ 0.2wt%, dispersant OROTAN731A 0.5wt%, preservative LXE 0.1wt%, levelling agent RM2020 0.2wt%, thickening agent RZ-60 1.0wt%, wetting agent DW-CL3 0.1wt%, Coalescents alcohol ester 12 0.65wt%, multifunctional assistant AMP-95 0.38wt%, Dow Corning Corporation dredge Water preparation automatically cleaning auxiliary agent 87AD 2wt%, antifreezing agent propylene glycol 1.8wt%, pigment titanium white 17.5wt%, Zinc oxide 2.5wt%, particle diameter 20～the hollow glass microbead 2wt% of 60 microns；
The preparation method of above-mentioned reflective insulation hydrophobic coating is as follows:
1) water of 100 kilograms is joined in dispersion cylinder, start blender to depend under the rotating speed of 1000 revs/min 18 kilograms of propylene glycol of secondary addition, preservative LXE 1 kilogram, wetting agent DW-CL3 1 kilogram, dispersant OROTAN731A 5 kilograms, defoamer NXZ 1 kilogram, multifunctional assistant AMP 2 kilograms, dispersion 5～ 10 minutes；
2) under 500 revs/min of rotating speeds, it is slowly added to Rutile type titanium dioxide 175 kilograms, zinc oxide 25 Kilogram, high speed dispersion, rotating speed 1000 revs/min, 40～60 minutes, reach fineness less than 40 microns.
3) self-control acrylic elastic emulsion: first take 500 kg of water and 2 kilograms of emulsifying agents join pre-emulsification In device, under stirring condition, it is added thereto to the monomer of 400 kilograms, dodecylbenzene sodium sulfonate in emulsifying agent, OP-9, OP-21 respectively account for 1/3, and monomer includes the methyl of the butyl methacrylate of 60wt%, 36wt% Acrylic acid methyl ester. and the methacrylic acid of 4wt%, obtain pre-emulsion after stirring 30min under 800r/min, Take 500 kg of water, 4 kilograms of emulsifying agents and 300 kilograms of pre-emulsions afterwards and join in reactor, keep Mixing speed is, after 200r/min is warming up to 85 DEG C, to be added thereto to initiator ammonium persulfate 600g and friendship Connection agent N hydroxymethyl acrylamide 800g starts reaction, reacts remaining pre-emulsion, over cure after starting Acid ammonium 200g and silica dispersions 50 kilograms constant speed in 2.5 hours drop in reactor, instead Answer temperature to be maintained at 85 DEG C, be incubated 1 hour and obtain acrylic elastic emulsion；
4) under 300 revs/min of rotating speeds, to step 2) gained mixture adds step 3) prepare third Olefin(e) acid elastic emulsion 550 kilograms, stirs；
5) under 300 revs/min of rotating speeds, defoamer NXZ 1 kilogram, coalescents alcohol ester 12 are added Kilogram, it is distributed to without oil droplet；
6) under 300 revs/min of rotating speeds, diameter 20～the hollow glass microbead 20 kilograms of 60 microns are added, It is uniformly dispersed；
7) under 300 revs/min of rotating speeds, add hydrophobic automatically cleaning auxiliary agent 30 kilograms, be uniformly dispersed；
8) under 300 revs/min of rotating speeds, add multifunctional assistant AMP 1.8 kilograms, add thickening agent RZ-60 10 kilograms, levelling agent RM2020 2 kilograms, and remaining 65 kg of water, it is adjusted to appropriate viscosity. In order to verify the performance of reflective insulation hydrophobic coating that the present invention provides, we are to embodiment 1～5 gained Coating carried out performance test, its result is as shown in table 1:
Table 1: the performance test results of embodiment 1-5 gained coating
Sunlight reflectivity Hemispherical emissivity Elongation at break % Contact angle
Embodiment 1 0.85 0.87 310 120
Embodiment 2 0.86 0.88 298 122
Embodiment 3 0.86 0.88 312 125
Embodiment 4 0.86 0.87 286 125
Embodiment 5 0.85 0.87 292 125
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this Within bright protection domain.

Claims (8)

1. a reflective insulation hydrophobic coating, it is characterised in that include the component of following percentage by weight: Acrylic elastic emulsion 40～55wt%, hydrophobic automatically cleaning auxiliary agent 2～5wt%, defoamer 0.1～0.5wt%, Dispersant 0.2～0.6wt%, preservative 0.1～0.5wt%, levelling agent 0.2～0.6wt%, thickening agent 0.5～1.1wt%, wetting agent 0～0.3wt%, coalescents 0～1wt%, multifunctional assistant 0.1～ 1wt%, antifreezing agent 1～3wt%, pigment 10～20wt%, hollow glass microbead 2～5wt%, surplus is water.
A kind of reflective insulation hydrophobic coating the most according to claim 1, it is characterised in that described Acrylic elastic emulsion by 100 parts of water, monomer 40 parts, silica dispersions 5 parts, cross-linking agent N hydroxymethyl acrylamide 0.08 part, initiator ammonium persulfate 0.08 part, emulsifying agent 0.3 part, through half Continuous emulsion polymerization is prepared from, wherein said monomer include 60wt% butyl methacrylate, The methyl methacrylate of 36wt% and the methacrylic acid of 4wt%, detergent alkylate sulphur in described emulsifying agent Acid sodium, OP-9, OP-21 respectively account for 1/3.
A kind of reflective insulation hydrophobic coating the most according to claim 1 and 2, it is characterised in that Described hydrophobic automatically cleaning auxiliary agent is modified organic silicon class material, and particle diameter is 5～10nm.
A kind of reflective insulation hydrophobic coating the most according to claim 1 and 2, it is characterised in that Described defoamer is modified polyorganosiloxane class defoamer, and described dispersant is hydrophobically modified ammonium salt dispersant, Described preservative is the preservative without formaldehyde and heavy metal, and described levelling agent is polyurethanes levelling agent, Described thickening agent is alkali swelling class thickening agent, and described wetting agent is surfactant, and described coalescents is Alcohol ester 12, described multifunctional assistant is organic ammonium, and described antifreezing agent is propylene glycol.
A kind of reflective insulation hydrophobic coating the most according to claim 4, it is characterised in that described Defoamer is one or both in A-10, NXZ, F-111, described dispersant be XG505,5027, One in OROTAN731A, described preservative is the one in LXE, K14, and described levelling agent is One in RM2020, RHEOOLATE278, described thickening agent is in RZ-60, RHEOLATE425 One, described wetting agent is the one in DW-CL3, DW-15, and described multifunctional assistant is AMP-95.
A kind of reflective insulation hydrophobic coating the most according to claim 4, it is characterised in that described The HLB of dispersant is 6～10, and the HLB of described wetting agent is 8～12.
A kind of reflective insulation hydrophobic coating the most according to claim 1 and 2, it is characterised in that Described pigment is one or more in titanium dioxide, zinc oxide or barium sulfate.
A kind of reflective insulation hydrophobic coating the most according to claim 1 and 2, it is characterised in that The particle diameter of described hollow glass microbead is 1～85 micron, and density is 0.125～0.6g/cc.
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CN109517459A (en) * 2018-11-20 2019-03-26 四川华邦保和涂料有限公司 A kind of preparation method from dry acrylic acid anti-corrosion reflective heat-insulation paint
CN111635681A (en) * 2020-05-07 2020-09-08 上海大学 Water-based reflective heat-insulating hydrophobic coating and preparation method thereof

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