CN105348936A - Hydrophobic elastic waterborne emulsion paint and preparation method thereof - Google Patents
Hydrophobic elastic waterborne emulsion paint and preparation method thereof 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
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
- C09D7/44—Combinations of two or more thickening agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to a hydrophobic elastic waterborne emulsion paint. The emulsion paint comprises the following raw materials: water, a thickening agent, a pH value conditioning agent, a wetting agent, a dispersant, titanium dioxide, a filling material, an emulsion, a high-opacity polymer, a hydrophobic aid, a film forming aid, an antifreezing agent, a bactericide, a mildew inhibitor, an antifoaming agent and an adhesion reinforcing agent. The hydrophobic elastic waterborne emulsion paint provided by the invention overcomes the disadvantage of poor resistance to soiling of current commercially-available elastic waterborne emulsion paints and has the advantage of excellent surface soiling resistance while maintaining good elasticity.
Description
Technical field
The present invention relates to elastic aqueous emulsion paint of a kind of hydrophobic type and preparation method thereof, be applied in paint field.
Background technology
Elastic emulsion paint take elastic emulsion as filmogen manufacture, and its film not only has the performance of common coating, and maintains higher tensile strength, snappiness and elongation in certain temperature range.The base material of buildings is generally cement based, influenced by ambient temperature, and dilation is heavier, easily cracks, and therefore often adopts elastic coating to construct.Elastic emulsion paint effectively can solve hair line that substrate surface produces and be subject to the welcome in market owing to having good expanding with heat and contract with cold.But elastic emulsion paint has elasticity, soft film coating because of paint film, especially under the weather condition of sweltering heat in summer, film coated surface is easily softening to be even clamminess, and be very easily stained with ash, the surperficial contamination resistance of elastic emulsion paint is declined greatly, decorative effect is deteriorated.The elasticity of most elastic coating can pass through national JG/T172-2015 now, but its contaminated resistance is general all between 20-25 part, how while guarantee elastic emulsion paint elastic performance, effectively improve its paint film contaminated resistance (as lower than 15 parts) and become the difficult problem needing solution in modern architecture coating industry badly.
Existing elastic emulsion paint is as 201110126054.9 and 201110428876.2, and it uses titanium dioxide, emulsion and as the coarse whiting of filler and kaolin more, although it has good elasticity, the stain resistance on its surface is not good.Therefore provide a kind of not only there is excellent resilient properties but also the elastic aqueous emulsion paint with good anti-pollution characteristic and preparation method thereof oneself become when business urgently.
Summary of the invention
The invention provides elastic aqueous emulsion paint of a kind of hydrophobic type and preparation method thereof, which overcome the existing shortcoming that elastic aqueous emulsion paint anti-pollution characteristic is not good on the market, have while can possessing good elasticity performance and also there is the good advantage of surperficial resistance to soiling.
Technical scheme of the present invention is as follows:
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: water 10-18 part, thickening material 0.35-0.5 part, pH adjusting agent 0.1-0.25 part, wetting agent 0.1-0.4 part, dispersion agent 0.1-0.6 part, titanium dioxide 12-20 part, filler 20-35 part, emulsion 25-40 part, high opacity polymer 2-5 part, hydrophobicity auxiliary agent 1-5 part, film coalescence aid 0.5-1.5 part, frostproofer 0.5-2 part, sterilant 0.1-0.2 part, mould inhibitor 0.1-0.2 part, defoamer 0.2-0.6 part, adhesive promoter 0.1-0.2 part; Wherein, filler comprises mica powder and process white; Emulsion is without APEO styrene-acrylate emulsion; PH adjusting agent is alkaline pH adjusting agent.
What the elastic aqueous emulsion paint of the application's hydrophobic type used is the principle of bionical " lotus leaf effect ", nonpoisonous and tasteless, safety and environmental protection.When brushing is after body of wall, its main component of titania, filler and emulsion can form paint film, and this paint film has excellent elastic telescopic ability, can effectively cover body of wall crackle.Simultaneously by the improvement to filler, collocation is selected as carried out science to its component, namely the mica powder of the sheet structure of suitable proportion, process white that physical and chemical stability is good is added in filler, and the hydrophobicity of paint film is regulated, namely hydrophobicity auxiliary agent is added, to improve the density of elasticity paint film and the static contact angle to water.Hydrophobic material is automatically migrated to paint film gas-particle two-phase interface along with the drying process of paint film, makes paint film have comparatively low surface energy, can reduce the absorption to dust in air preferably.The application does not cause negative impact to the elasticity of original paint film while raising paint film anti-soil degree, the performance of effective solution and elasticity conflicting paint film stain resistant difference, realize paint film and have snappiness, high dirt resistance dual property, attachment degree is good simultaneously, difficult drop-off.
Described filler also comprises coarse whiting and calcined kaolin; Filler in described raw material is made up of mica powder 1.7-3.15 part, coarse whiting 14-20 part, process white 4-6.85 part, calcined kaolin 0.3-5 part, is more than weight part.The collocation of multiple filler composition and suitable ratio, make the hydrophobic type elastic aqueous emulsion paint contamination resistance prepared better.
Described alkaline pH adjusting agent is 2-amino-2-methyl-1-propanol.
Described thickening material is one in cellulose thickener, alkali swelling type thickening material, polyurethane thickener or its arbitrary combination, described cellulose thickener is Natvosol or Vltra tears, described frostproofer is ethylene glycol or propylene glycol, and described defoamer is mineral oil antifoam agent or silica modified defoamer.The uniformity coefficient of the elastic aqueous emulsion paint paint film of the hydrophobic type making to prepare used in combination of multiple thickening material is better, and contamination resistance is better.
The elastic aqueous emulsion paint of described hydrophobic type is made up of the raw material of following weight part, 10.8 parts, water, Natvosol 0.25 part, polyurethane thickener 0.2 part, pH adjusting agent 0.2 part, wetting agent 0.3 part, dispersion agent 0.5 part, titanium dioxide 18 parts, mica powder 2 parts, coarse whiting 20 parts, process white 6 parts, calcined kaolin 2 parts, emulsion 30 parts, high opacity polymer 2 parts, hydrophobicity auxiliary agent 5 parts, film coalescence aid 0.9 part, propylene glycol 1 part, 0.1 part, sterilant, mould inhibitor 0.1 part, mineral oil antifoam agent 0.5 part, adhesive promoter 0.15 part.Elasticity and the high dirt resistance dual property of the elastic aqueous emulsion paint of hydrophobic type of this composition and proportioning are better.
The preparation method of the elastic aqueous emulsion paint of described hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and the mixing of part thickening material, disperse limit to add pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 300-600rpm rotating speed, dispersion 3-5min; Then 2-4min is disperseed under adjusting rotating speed to 800-1200rpm; Adjusting rotating speed is afterwards that dispersion limit, 1500-1800rpm limit adds titanium dioxide, filler, and dispersion 18-22min, namely prepares slurry;
2. paint technique: under 400-800rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add emulsion and high opacity polymer, dispersion 2-4min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, remaining thickening material and adhesive promoter; Then under 800-1000rpm rotating speed, dispersion 4-6min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Compared with prior art, the present patent application has the following advantages:
1) safety and environmental protection, compared with the elastic emulsion paint prepared, while the performance ensureing original snappiness degree, effectively can improve the conflicting paint film contaminated resistance with elasticity, realize hydrophobicity, snappiness, the multiple performance of high dirt resistance with prior art;
2) the elastic aqueous emulsion paint viscosity of the hydrophobic type of the application is 100 ± 2ku, and color stuffing volumetric concentration (PVC) is less than 50%, and its preparation technology is simple, has very strong industrialization ability and wide market outlook.
Figure of description
Fig. 1 is rank and the state graph of paint adhesion judgment criteria;
Fig. 2 is permeability test device schematic diagram;
Fig. 3 is the utility appliance schematic diagram scrubbing test;
Fig. 4 is that steel is coated with film die schematic diagram.
Label declaration:
1 black plastic sheet, 2 wet film preparing devices, 3 films.
Embodiment
Below in conjunction with each embodiment, technical scheme of the present invention is described in detail.
Raw material sources:
Natvosol, Vltra tears: Samsung chemical company;
Mica powder: sericite, Ge Rui company;
Titanium dioxide: model R-706, E.I.Du Pont Company;
Coarse whiting: Pingdu sky one powder process;
Alkali swelling type thickening material, polyurethane thickener: model is respectively TT935, RM2020, Rhom and Hass;
PH adjusting agent: AMP-95 multifunctional assistant, De Qian company;
Emulsion: model 7607, BASF AG;
Film coalescence aid: TEXANOL multifunctional assistant, Yi Si Man.
Embodiment 1
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 10.8 parts, water, Natvosol 0.25 part, polyurethane thickener 0.2 part, 2-amino-2-methyl-1-propanol 0.2 part, wetting agent 0.3 part, dispersion agent 0.5 part, titanium dioxide 18 parts, mica powder 2 parts, coarse whiting 20 parts, process white 6 parts, calcined kaolin 2 parts, without APEO styrene-acrylate emulsion 30 parts, high opacity polymer 2 parts, hydrophobicity auxiliary agent 5 parts, film coalescence aid 0.9 part, propylene glycol 1 part, 0.1 part, sterilant, mould inhibitor 0.1 part, mineral oil antifoam agent 0.5 part, adhesive promoter 0.15 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and Natvosol mixing, disperse limit to add 2-amino-2-methyl-1-propanol, mineral oil antifoam agent, wetting agent, dispersion agent, sterilant and mould inhibitor below at 500rpm rotating speed, dispersion 4min; Then 3min is disperseed under adjusting rotating speed to 1000rpm; Adjusting rotating speed is afterwards that dispersion limit, 1600rpm limit adds titanium dioxide, filler, and dispersion 20min, namely prepares slurry;
2. paint technique: under 600rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 3min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, propylene glycol, polyurethane thickener and adhesive promoter; Then under 900rpm rotating speed, dispersion 5min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 2
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 10 parts, water, Vltra tears 0.3 part, alkali swelling type thickening material 0.2 part, alkaline pH adjusting agent 0.25 part, wetting agent 0.1 part, dispersion agent 0.6 part, titanium dioxide 12 parts, mica powder 3.15 parts, coarse whiting 20 parts, process white 6.85 parts, calcined kaolin 5 parts, without APEO styrene-acrylate emulsion 25 parts, high opacity polymer 5 parts, hydrophobicity auxiliary agent 3 parts, film coalescence aid 0.5 part, ethylene glycol 2 parts, 0.2 part, sterilant, mould inhibitor 0.15 part, silica modified defoamer 0.2 part, adhesive promoter 0.1 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and Vltra tears mixing, disperse limit to add alkaline pH adjusting agent, silica modified defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 300rpm rotating speed, dispersion 5min; Then disperse 4min under adjusting rotating speed to 800-rpm, adjusting rotating speed is afterwards that dispersion limit, 1500rpm limit adds titanium dioxide, filler, and dispersion 22min, namely prepares slurry;
2. paint technique: under 400rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 4min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, ethylene glycol, alkali swelling type thickening material and adhesive promoter; Then under 800rpm rotating speed, dispersion 6min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 3
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 18 parts, water, alkali swelling type thickening material 0.15 part, polyurethane thickener 0.2 part, alkaline pH adjusting agent 0.1 part, wetting agent 0.4 part, dispersion agent 0.1 part, titanium dioxide 20 parts, mica powder 1.7 parts, coarse whiting 14 parts, process white 4 parts, calcined kaolin 0.3 part, without APEO styrene-acrylate emulsion 40 parts, high opacity polymer 3.5 parts, hydrophobicity auxiliary agent 1 part, film coalescence aid 1.5 parts, frostproofer 0.5 part, 0.15 part, sterilant, mould inhibitor 0.2 part, defoamer 0.6 part, adhesive promoter 0.2 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and the mixing of alkali swelling type thickening material, disperse limit to add alkaline pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 600rpm rotating speed, dispersion 3min; Then disperse 2min under adjusting rotating speed to 1200rpm, adjusting rotating speed is afterwards that dispersion limit, 1800rpm limit adds titanium dioxide, filler, and dispersion 18min, namely prepares slurry;
2. paint technique: under 800rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 2min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, polyurethane thickener and adhesive promoter; Then under 1000rpm rotating speed, dispersion 4min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 4
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 10 parts, water, cellulose thickener 0.3 part, alkali swelling type thickening material 0.2 part, alkaline pH adjusting agent 0.25 part, wetting agent 0.1 part, dispersion agent 0.6 part, titanium dioxide 12 parts, mica powder 15 parts, process white 20 parts, without APEO styrene-acrylate emulsion 25 parts, high opacity polymer 5 parts, hydrophobicity auxiliary agent 3 parts, film coalescence aid 0.5 part, frostproofer 2 parts, 0.2 part, sterilant, mould inhibitor 0.15 part, defoamer 0.2 part, adhesive promoter 0.1 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and cellulose thickener mixing, disperse limit to add alkaline pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 500rpm rotating speed, dispersion 4min; Then 3min is disperseed under adjusting rotating speed to 1000rpm; Adjusting rotating speed is afterwards that dispersion limit, 1600rpm limit adds titanium dioxide, filler, and dispersion 20min, namely prepares slurry;
2. paint technique: under 600rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 3min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, alkali swelling type thickening material and adhesive promoter; Then under 900rpm rotating speed, dispersion 5min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 5
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 10.8 parts, water, cellulose thickener 0.25 part, polyurethane thickener 0.2 part, alkaline pH adjusting agent 0.2 part, wetting agent 0.3 part, dispersion agent 0.5 part, titanium dioxide 18 parts, mica powder 15 parts, process white 15 parts, without APEO styrene-acrylate emulsion 30 parts, high opacity polymer 2 parts, hydrophobicity auxiliary agent 5 parts, film coalescence aid 0.9 part, frostproofer 1 part, 0.1 part, sterilant, mould inhibitor 0.1 part, defoamer 0.5 part, adhesive promoter 0.15 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and cellulose thickener mixing, disperse limit to add alkaline pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 300rpm rotating speed, dispersion 5min; Then 4min is disperseed under adjusting rotating speed to 800-rpm; Adjusting rotating speed is afterwards that dispersion limit, 1500rpm limit adds titanium dioxide, filler, and dispersion 22min, namely prepares slurry;
2. paint technique: under 400rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 4min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, polyurethane thickener and adhesive promoter; Then under 800rpm rotating speed, dispersion 6min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 6
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 18 parts, water, alkali swelling type thickening material 0.15 part, Natvosol 0.2 part, alkaline pH adjusting agent 0.1 part, wetting agent 0.4 part, dispersion agent 0.1 part, titanium dioxide 20 parts, mica powder 15 parts, process white 5 parts, without APEO styrene-acrylate emulsion 40 parts, high opacity polymer 3.5 parts, hydrophobicity auxiliary agent 1 part, film coalescence aid 1.5 parts, frostproofer 0.5 part, 0.15 part, sterilant, mould inhibitor 0.2 part, defoamer 0.6 part, adhesive promoter 0.2 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and the mixing of alkali swelling type thickening material, disperse limit to add alkaline pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 600rpm rotating speed, dispersion 3min; Then 2min is disperseed under adjusting rotating speed to 1200rpm; Adjusting rotating speed is afterwards that dispersion limit, 1800rpm limit adds titanium dioxide, filler, and dispersion 18min, namely prepares slurry;
2. paint technique: under 800rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 2min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, Natvosol and adhesive promoter; Then under 1000rpm rotating speed, dispersion 4min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 7
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 10 parts, water, cellulose thickener 0.5 part, alkaline pH adjusting agent 0.25 part, wetting agent 0.1 part, dispersion agent 0.6 part, titanium dioxide 12 parts, mica powder 3.15 parts, coarse whiting 20 parts, process white 6.85 parts, calcined kaolin 5 parts, without APEO styrene-acrylate emulsion 25 parts, high opacity polymer 5 parts, hydrophobicity auxiliary agent 3 parts, film coalescence aid 0.5 part, ethylene glycol 2 parts, 0.2 part, sterilant, mould inhibitor 0.15 part, silica modified defoamer 0.2 part, adhesive promoter 0.1 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and the mixing of cellulose thickener partly, disperse limit to add alkaline pH adjusting agent, silica modified defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 300rpm rotating speed, dispersion 5min; Then 4min is disperseed under adjusting rotating speed to 800-rpm; Adjusting rotating speed is afterwards that dispersion limit, 1500rpm limit adds titanium dioxide, filler, and dispersion 22min, namely prepares slurry;
2. paint technique: under 400rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 4min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, ethylene glycol, remaining cellulose thickener and adhesive promoter; Then under 800rpm rotating speed, dispersion 6min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 8
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 18 parts, water, alkali swelling type thickening material 0.35 part, alkaline pH adjusting agent 0.1 part, wetting agent 0.4 part, dispersion agent 0.1 part, titanium dioxide 20 parts, mica powder 1.7 parts, coarse whiting 14 parts, process white 4 parts, calcined kaolin 0.3 part, without APEO styrene-acrylate emulsion 40 parts, high opacity polymer 3.5 parts, hydrophobicity auxiliary agent 1 part, film coalescence aid 1.5 parts, frostproofer 0.5 part, 0.15 part, sterilant, mould inhibitor 0.2 part, defoamer 0.6 part, adhesive promoter 0.2 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and the mixing of alkali swelling type thickening material partly, disperse limit to add alkaline pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 600rpm rotating speed, dispersion 3min; Then 2min is disperseed under adjusting rotating speed to 1200rpm; Adjusting rotating speed is afterwards that dispersion limit, 1800rpm limit adds titanium dioxide, filler, and dispersion 18min, namely prepares slurry;
2. paint technique: under 800rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 2min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, remaining alkali swelling type thickening material and adhesive promoter; Then under 1000rpm rotating speed, dispersion 4min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Embodiment 9
The elastic aqueous emulsion paint of a kind of hydrophobic type, it is made up of the raw material of following weight part: 10 parts, water, polyurethane thickener 0.5 part, alkaline pH adjusting agent 0.25 part, wetting agent 0.1 part, dispersion agent 0.6 part, titanium dioxide 12 parts, mica powder 15 parts, process white 20 parts, without APEO styrene-acrylate emulsion 25 parts, high opacity polymer 5 parts, hydrophobicity auxiliary agent 3 parts, film coalescence aid 0.5 part, frostproofer 2 parts, 0.2 part, sterilant, mould inhibitor 0.15 part, defoamer 0.2 part, adhesive promoter 0.1 part.
The preparation method of the elastic aqueous emulsion paint of this hydrophobic type, the following steps of carrying out successively under being included in normal temperature and condition of normal pressure:
1. pulping process: first by after water and the mixing of polyurethane thickener partly, disperse limit to add alkaline pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 500rpm rotating speed, dispersion 4min; Then 3min is disperseed under adjusting rotating speed to 1000rpm; Adjusting rotating speed is afterwards that dispersion limit, 1600rpm limit adds titanium dioxide, filler, and dispersion 20min, namely prepares slurry;
2. paint technique: under 600rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add without APEO styrene-acrylate emulsion and high opacity polymer, dispersion 3min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, remaining polyurethane thickener and adhesive promoter; Then under 900rpm rotating speed, dispersion 5min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
Testing data
The finish paint property indices testing data that each embodiment of the elastic aqueous emulsion paint of table one hydrophobic type records according to GB/T9755-2014 standard
The elasticity that each embodiment of table two---the elastic aqueous emulsion paint of hydrophobic type records according to JG/T172-2014 standard and sticking power property indices testing data
Can find out that the elastic aqueous emulsion paint of the hydrophobic type of embodiment 1-9 is correlated with in resistance to soiling, elasticity is correlated with and the properties of sticking power is excellent from table one, two, be better than existing relevant criterion requirement.
More than test the test method used as follows:
(1) test of state, application property, time of drying, appearance of film in a reservoir
The elastic aqueous emulsion paint of a hydrophobic type in each embodiment, under normal temperature and pressure, container is even without lump after holding and stirring, and roller application twice are all accessible, and surface drying in 1h under construction paint film normal temperature, film is normal without cracking phenomena.
(2) test of contrast ratio
On water white transparency mylar (thickness is 30um-50um), or on the carton paper of background color black and white half and half, be coated with tested coating equably by 7.1.2 regulation, normal temperature places 24h, the reflectivity of film on black and white bottom surface is measured: as being that film prepared by ground with polyester film by reflectance meter, then japanning polymer PET is attached on the black and white working plate dripped appended by the instrument having several No. 200 solvent oils (or other solvents be applicable to), make it to ensure air-gap-free, then at least four positions, measure the reflectivity often opening japanning polymer PET, and calculate average reflectance RB (on blackboard) and RW (on blank) respectively.As being that film prepared by the carton paper of black and white half and half with background color, then direct on black and white background color film each at least four position measurement reflectivity, and point calculate average reflectance RB (on blackboard) and RW (on blank).Contrast ratio calculates: contrast ratio=RB/RW.
(3) low-temperature stability test
By the coating of each embodiment, hold-5 ± 3 DEG C by certain container tank and store 18h, then normal temperature places 6h, is so a circulation, and continuous three circulation can opening coating are all without rotten.
(4) test method of alkali resistance test is as follows:
By the elastic aqueous emulsion paint of hydrophobic type for preparing in size 150mm × 70mm × (4-6) mm without on asbestos cement plate respectively with together with each coating of line rod of diameter 120 and 80 specifications, twice coating duration interval is not less than 6h, prepare A altogether, B, C tri-pieces of test sample plate, and the plate prepared is put in temperature 23 ± 2 DEG C, the environment maintenance of humidity 50 ± 5% 7 days, then by A, B, C plate is soaked in the solution of saturated calcium hydroxide, observe after 48h, as in three pieces of models wherein two pieces do not occur bubble, dry linting, the defects of film coating phenomenons such as obvious variable color, be assessed as " without exception ".
(5) test method of water resistance test is as follows:
By the elastic aqueous emulsion paint of hydrophobic type for preparing in size 150mm × 70mm × (4-6) mm without on asbestos cement plate respectively with together with each coating of line rod of diameter 120 and 80 specifications, twice coating duration interval is not less than 6h, prepare A, B, C tri-pieces of test sample plate altogether, and the plate prepared is put in temperature 23 ± 2 DEG C, the environment maintenance of humidity 50 ± 5% 7 days, then A, B, C plate is soaked in water, observe after 96h, as in three pieces of models wherein two pieces there is not the defects of film coating phenomenon such as foaming, dry linting, obviously variable color, be assessed as " without exception ".
(6) water-permeable test
Permeability test device is as shown in Figure 2 funnel-form glass device with a scale, volume 95mL ± 5mL, and top glass pipe racks has 4mL scale, and minimum division value is 0.1mL, and chassis diameter is about 65mm ~ 66mm, through frosted process.
By the elastic aqueous emulsion paint of embodiment 1 hydrophobic type for preparing in size 430mm × 150mm × (4-6) mm without brushing quality 8 ± 1g on asbestos cement plate, to brush twice and twice coating duration interval is not less than 6h, make two pieces of test panels altogether, and the plate prepared is put in temperature 23 ± 2 DEG C, the environment maintenance of humidity 50 ± 5% 7 days.Test plate (panel) is placed in horizontality, painted surface upwards, permeability test device is placed on the middle part of test plate (panel), the gap of test plate (panel) and permeability test device is sealed with the sealing material do not absorbed water, guarantee that water can not ooze out from gap, after material drying to be sealed (kind of looking sealing material time of drying different and different), by in three grades of slow implantation glass pipes of test water, until the 0mL scale of test tube, confirm the 0mL scale again adjusting test tube in container after bubble-free, Glass tubing top masking foil is hidden and encases, temperature 23 ± 2 DEG C, observe again after leaving standstill 24h under humidity 50 ± 5% environment and record liquid level decline milliliter number, each model uses once.The equally according to said method elastic aqueous emulsion paint water-permeable of the hydrophobic type of testing example 2-9.
(7) scrub resistance test
If needed, filtration embodiment 1 sample is to remove wherein all skinning and particle.As shown in Figure 3, black plastic sheet 1 is placed on sheet glass or other smooth plate, with wet film preparing device (200um) 2 on black plastic sheet on blade coating the elastic aqueous emulsion paint of hydrophobic type form film 3, prepare two pieces of test plate (panel)s altogether.Blade coating speed should be quite slow, needs the time of 3s ~ 4s, in order to avoid form pin hole on paint film from one end to the other end.By test plate (panel) horizontal positioned, temperature 23 ± 2 DEG C, maintenance 7d under the environment of humidity 50 ± 5%.Use the washing powder water of 0.5% to do scrubbing resistance test, the abrasion resistance of two plates tested by washability machine simultaneously, washes number of times for experimental test data with the scrubbing brush of scrubbing first appearing base material.The equally according to said method abrasion resistance of the elastic aqueous emulsion paint of the hydrophobic type of testing example 2-9.
(8) stain resistant test
By elastic aqueous for the hydrophobic type of each embodiment emulsion paint in size 150mm × 70mm × (4-6) mm without on asbestos cement plate respectively with together with each coating of line rod of diameter 120 and 80 specifications, twice coating duration interval is not less than 6h, and the plate prepared is put in temperature 23 ± 2 DEG C, the environment maintenance of humidity 50 ± 5% 7 days, prepares 3 blocks of plates and A, B, C altogether.Elastic aqueous for the hydrophobic type of each embodiment emulsion paint is brushed on A, B, C3 block plate, brushing quality is 0.7 ± 0.1g/ block, and the plate of having brushed is put in the baking oven baking 0.5h of temperature 60 ± 2 DEG C, then relay into 23 ± 2 DEG C, the environment maintenance 2h of humidity 50 ± 5%, then water rinses plate 1 minute, and this is 1 circulation.Repeat above-mentioned test after 24h, do 2 circulations altogether.The reflectance value of test panel after 5 circulations, thus calculate stain resistant numerical value.
(9) hydrophobicity test
The automatic contact angle instrument of SL200B is adopted to test.
(10) preparation of tensile strength and tension set film and test
Fully be uniformly mixed in a reservoir by elastic aqueous for the hydrophobic type of each embodiment emulsion paint, divide masking in steel painting film die (see Fig. 4) poured into for three times and be made up of stainless steel plate and polyester film, die size is as following table.
First time masking mould A, mold removal after film forming 24h, the film made is placed mould B, carries out second time masking; Mold removal B after film forming 24h, the film made is placed mould C, carries out third time masking.Should not there is bubble in each masking, final build should be (1.0 ± 0.2) mm.By obtained film, meeting maintenance 48h under the test conditions that GB/T9278 specifies, the loft drier of (80 ± 2) DEG C is oppositely put into after taking off film, test specimen and dry tank wall spacing are not less than 50mm, the mercury bulb of test specimen center and thermometer in same level, should take out after constant temperature 96h, places 24h at the standard conditions, then utilize film cutting die for cutting to go out width 6mm batten, use the elastic performance of stretching instrument test paint film and record data.Wherein cryogenic stretching performance draw speed is 30mm/min, and normal temperature draw speed is 200mm/min.
(3) sticking power test
Adopt cross-hatching, the paint film pocket knife of the elastic aqueous emulsion paint of the hydrophobic type by each embodiment marks the grid of 2mm spacing in length and breadth, then uses on transparent pressure sensitive tape adhesion grid, grasps one, adhesive tape with the finger glue belt that rubs, in 0.5 ~ 1.0s, to tear adhesive tape close to 60 ° of angles.Retain adhesive tape as a reference, and check the state of cutting part.Sticking power evaluation criteria is shown in Fig. 1.
Elastic aqueous emulsion paint of hydrophobic type of the present invention and preparation method thereof has more than and is only confined to above-described embodiment, and every any improvement according to the principle of the invention or replacement, all should within protection scope of the present invention.
Claims (6)
1. the elastic aqueous emulsion paint of hydrophobic type, it is characterized in that: it is made up of the raw material of following weight part, water 10-18 part, thickening material 0.35-0.5 part, pH adjusting agent 0.1-0.25 part, wetting agent 0.1-0.4 part, dispersion agent 0.1-0.6 part, titanium dioxide 12-20 part, filler 20-35 part, emulsion 25-40 part, high opacity polymer 2-5 part, hydrophobicity auxiliary agent 1-5 part, film coalescence aid 0.5-1.5 part, frostproofer 0.5-2 part, sterilant 0.1-0.2 part, mould inhibitor 0.1-0.2 part, defoamer 0.2-0.6 part, adhesive promoter 0.1-0.2 part;
Wherein, filler comprises mica powder and process white; Emulsion is without APEO styrene-acrylate emulsion; PH adjusting agent is alkaline pH adjusting agent.
2. the elastic aqueous emulsion paint of hydrophobic type according to claim 1, is characterized in that: described filler also comprises coarse whiting and calcined kaolin; Filler in described raw material is made up of mica powder 1.7-3.15 part, coarse whiting 14-20 part, process white 4-6.85 part, calcined kaolin 0.3-5 part, is more than weight part.
3. the elastic aqueous emulsion paint of hydrophobic type according to claim 1, is characterized in that: described alkaline pH adjusting agent is 2-amino-2-methyl-1-propanol.
4. the elastic aqueous emulsion paint of hydrophobic type according to claim 2, it is characterized in that: described thickening material is one in cellulose thickener, alkali swelling type thickening material, polyurethane thickener or its arbitrary combination, described cellulose thickener is Natvosol or Vltra tears, described frostproofer is ethylene glycol or propylene glycol, and described defoamer is mineral oil antifoam agent or silica modified defoamer.
5. the elastic aqueous emulsion paint of hydrophobic type according to claim 4, it is characterized in that: it is made up of the raw material of following weight part, 10.8 parts, water, Natvosol 0.25 part, polyurethane thickener 0.2 part, pH adjusting agent 0.2 part, wetting agent 0.3 part, dispersion agent 0.5 part, titanium dioxide 18 parts, mica powder 2 parts, coarse whiting 20 parts, process white 6 parts, calcined kaolin 2 parts, emulsion 30 parts, high opacity polymer 2 parts, hydrophobicity auxiliary agent 5 parts, film coalescence aid 0.9 part, propylene glycol 1 part, 0.1 part, sterilant, mould inhibitor 0.1 part, mineral oil antifoam agent 0.5 part, adhesive promoter 0.15 part.
6., according to the preparation method of the arbitrary described elastic aqueous emulsion paint of hydrophobic type of claim 1-5, it is characterized in that: its following steps of carrying out successively under being included in normal temperature and condition of normal pressure,
1. pulping process: first by after water and the mixing of part thickening material, disperse limit to add pH adjusting agent, defoamer, wetting agent, dispersion agent, sterilant and mould inhibitor below at 300-600rpm rotating speed, dispersion 3-5min; Then 2-4min is disperseed under adjusting rotating speed to 800-1200rpm; Adjusting rotating speed is afterwards that dispersion limit, 1500-1800rpm limit adds titanium dioxide, filler, and dispersion 18-22min, namely prepares slurry;
2. paint technique: under 400-800rpm rotating speed, to step 1. in the made dispersion limit, slurry limit got ready slowly add emulsion and high opacity polymer, dispersion 2-4min; Dispersion limit, back add hydrophobicity auxiliary agent, film coalescence aid, frostproofer, remaining thickening material and adhesive promoter; Then under 800-1000rpm rotating speed, dispersion 4-6min is continued even to mixing liquid, i.e. the obtained elastic aqueous emulsion paint of hydrophobic type.
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| CN113502100A (en) * | 2021-07-30 | 2021-10-15 | 福建省三棵树新材料有限公司 | Self-cleaning high-weather-resistance temperature-sensitive color-changing coating and preparation method thereof |
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Application publication date: 20160224 |