CN105462501A

CN105462501A - Organic and inorganic combined type stain resistance elastic flat emulsion paint and preparation method thereof

Info

Publication number: CN105462501A
Application number: CN201510937051.1A
Authority: CN
Inventors: 洪杰; 张仁波; 李祥文; 谢兵华; 郑国伟; 肖商迟; 吴洁
Original assignee: Skshu Paint Co Ltd
Current assignee: Skshu Paint Co Ltd
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2016-04-06

Abstract

The invention relates to an organic and inorganic combined type stain resistance elastic flat emulsion paint. The organic and inorganic combined type stain resistance elastic flat emulsion paint is prepared from water, cellulose, a pH conditioning agent, a dispersing agent, a wetting agent, an antifreezing agent, a defoaming agent, titanium dioxide, filler, an ultraviolet photocrosslinking elastic emulsion, a water paint reinforcing agent, an antibacterial preservative, a mildew preventive, other thickening agents except cellulose and modified silica sol, wherein the filler is one or more or the combination of any two or more of coarse whiting, calcined kaolin, precipitated barium sulphate and talcum powder or mica powder. The organic and inorganic combined type stain resistance elastic flat emulsion paint overcomes the defects that an existing elastic flat emulsion paint is poor in stain resistance and weather resistance and has the advantages of being high in stain resistance (smaller than 12%), high in weather resistance, excellent in defoaming performance, easy and convenient to prepare and low in manufacturing cost.

Description

A kind of organic-inorganic composite high dirt resistance elasticity is flat is coated with emulsion paint and preparation method thereof

Technical field

The present invention relates to a kind of organic-inorganic composite high dirt resistance elasticity flat painting emulsion paint and preparation method thereof, be applied in architectural decoration water-borne coatings field.

Background technology

Current skin body of wall base material is generally cement based, after it affects by factors such as environment, temperature and humidity changes, and the as easy as rolling off a log generation fine cracks of body of wall.It is attractive in appearance that this not only destroys body of wall, also easily makes inner body of wall suffer erosion.

Elastic emulsion paint is divided into the flat painting of elasticity and elastic napping two kinds.Elasticity is flat, and to be coated with class emulsion paint be scumble, (its film build is about 60um), and film is plane, smooth; And elastic napping class emulsion paint is heavy-film coating (coating thickness is about 300um), film is three-dimensional, rough.Elasticity is equalled painting class and is that the color stuffing, thickening material kind and the ratio that adopt are different with the emulsion paint key distinction of elastic napping class, and in addition, the viscosity of paint also has very big-difference.

Elastic emulsion paint is that main film forming substance manufacture forms with elastic emulsion, and its film has snappiness and toughness in certain temperature range, has can hide body of wall micro-cracks, prevent the features such as concrete carbonization, and it is more and more subject to market favor.But the film of elastic emulsion paint is more soft, especially in hot summer (body of wall temperature can up to more than 50 DEG C), its film coated surface even can be clamminess and easily be stained with ash, film is polluted thus affects that it is ornamental.Therefore, improving contamination resistance is the problem that elastic emulsion paint must solve in development and application.

Along with industrialization is accelerated development, the medium oil pollutent of air (vehicle exhaust, plant gas) is day by day serious, large quantity research shows: hydrophilic coating has better contaminated resistance than oleophylic coating, this is because oiliness pollutent is not easily attached on hydrophilic film, even if the pollutent of attachment also can be removed by rain drop erosion easily.

Nano silica sol take SiO2 as the dispersion of fundamental unit in water, the high rigidity film (film has excellent weather-proof, water-fast, resistance to soiling) of-Si-O-Si-can be formed with moisture evaporation, but be rigid film after the independent film forming of silicon sol, namely film does not have elasticity, once body of wall cracking occurs or expands with heat and contract with cold, silicon sol film is easy to cracking.In prior art, have and Nano silica sol is applied in exterior wall rigidity flat painting emulsion paint, equal the water tolerance and weathering resistance that are coated with emulsion paint, as CN201110147247 to improve rigidity.But CN201110147247 is a kind of rigidity finish paint (it uses rigidity emulsion), it does not possess the ability hiding body of wall micro-cracks.

Therefore provide one to possess high dirt resistance, high-weatherability, defoaming is excellent, and the organic-inorganic composite high dirt resistance elasticity of preparation method's simple and fast, low cost of manufacture flat be coated with emulsion paint and preparation method thereof oneself become when business urgently.

Summary of the invention

The invention provides a kind of organic-inorganic composite high dirt resistance elasticity flat painting emulsion paint and preparation method thereof, which overcome existing elasticity and equal the shortcoming that painting emulsion paint contamination resistance is not enough, froth breaking is difficult, there is high dirt resistance (contamination resistance < 12%), high-weatherability, defoaming are excellent, and preparation method is easy, the advantage of low cost of manufacture.

Technical scheme of the present invention is as follows:

A kind of organic-inorganic composite high dirt resistance elasticity is flat is coated with emulsion paint, and it is formulated by the component of following weight ratio:

The flat emulsion paint that is coated with of this organic-inorganic composite high dirt resistance elasticity have employed ultraviolet light cross-linking type elastic emulsion, to arrange in pairs or groups preferred color stuffing (i.e. titanium dioxide and various filler), by the rational PVC design of color stuffing, (PVC refers to color stuffing volumetric concentration, volume/(volume of color stuffing volume+filmogen dry film) of PVC=color stuffing), make that film is smooth, capillary-size pore is few; Add that ultraviolet light cross-linking type elastic emulsion is under ultraviolet lighting, film coated surface carries out polyreaction further, improve film coated surface hardness (hardness height is then not easily sticky grey) and density (fine and close then dust not easily enters the capillary-size pore of film), thus there is high dirt resistance; Employ modified silicasol again simultaneously, make film coated surface harder (hardness height is then not easily sticky grey) further, and hydrophilic (film hydrophilic then oiliness pollutent, such as vehicle exhaust, industrial gaseous waste etc., not easily stick to water-wetted surface), overall resistance to soiling is better.Modified silicasol mixes the organic-inorganic compoiste coating that can obtain excellent performance with organic polymer emulsion.Be inorganic materials after modified silicasol film forming, the weathering resistance of inorganic materials natively better than organic coating film (because organic coating film is under uviolizing, easy degradation with aging, xanthochromia etc.), therefore also can further improve the weathering resistance of elastomeric paint.In addition, in system, add water-miscible paint toughener, under the prerequisite affecting paint film elongation at break hardly, improve tensile strength, density and the envelope alkalescence of film can also be improved simultaneously.Wherein, the effect of frostproofer is the low-temperature stability being improved this emulsion paint by the freezing point of reduction water; Titanium dioxide is white pigment, provides the performances such as the whiteness of this emulsion paint, opacifying power, weathering resistance.The application's organic-inorganic composite high dirt resistance elasticity is flat is coated with emulsion paint, both possessed high dirt resistance (contamination resistance < 12%), and had again high-weatherability, defoaming is excellent, and low cost, cost performance is high.

Described pH adjusting agent is 2-amino-2-methyl-1-propanol or ammoniacal liquor.

Described dispersion agent is one or both arbitrary combination in ammonium polyacrylate dipersant or polycarboxylate sodium's dispersion agent,

Described wetting agent is poly-hydroxyalkyl ether nonionic wetting agent.

This preferred wetting and dispersing system (wetting and dispersing system comprises dispersion agent and wetting agent) makes the organic-inorganic composite high dirt resistance elasticity prepared put down, and the consistency of the popular mill base (as Clariant, generation name etc.) be coated with on emulsion paint and existing market is good, color developing good, not loose colour can be ensured, make the toning of paint vehicle accurately, favorable reproducibility.

Described defoamer is one or both arbitrary combination in mineral oil defoaming agent or water-based organic silicon defoamer.Elastic emulsion paint often froth breaking difficulty and the preferred antifoaming system of the application (antifoaming system comprises the reasonably combined of defoamer) to make the superelevation stain-resistant exterior wall elasticity prepared equal the defoaming being coated with emulsion paint excellent: when former paint bubble-free, construction, froth breaking is exceedingly fast, paint film do not leave bubble circle.

Described filler is one or both and two or more any arbitrary combination in water-ground limestone, calcined kaolin, process white, talcum powder and mica powder.The thickness powder collocation of preferred filler combination ensure that high dirt resistance and the elasticity of paint vehicle together with the PVC be applicable to.Described frostproofer is ethylene glycol or propylene glycol.

The pH of described modified silicasol is 8-10, and solid content is 25-30%, and median size is 15-30nm.Preferred modified silicasol makes coating system more stable (can not cause gel), become film contamination resistance better.

Described other thickening materials except Mierocrystalline cellulose are one in alkali swelling type thickening material or polyurethanes thickening material or its combination.The application by preferred thickened systems (comprising the preferred of Mierocrystalline cellulose and other thickening materials except Mierocrystalline cellulose) and collocation usage ratio thereof, achieve that can opening effect is good, construction time the excellent effect such as smooth smooth and easy, anti-splashing excellence, good leveling property.

This organic-inorganic composite high dirt resistance elasticity equals the preparation method being coated with emulsion paint, and it comprises the step that next coming in order carry out:

1. under the rotating speed of 500-800rpm, Xiang Shuizhong adds Mierocrystalline cellulose and mixes, and disperses 8-15min;

2. under the rotating speed of 800-1200rpm, in the mixture that 1. step is prepared, add pH adjusting agent successively, dispersion agent, wetting agent, frostproofer, defoamer, titanium dioxide, filler mix, improve rotating speed afterwards to 1500-1800rpm, under this rotating speed, mixture is dispersed to fineness≤60 μm, wherein, the consumption of defoamer is≤70% himself gross weight;

3. under the rotating speed of 500-800rpm, ultraviolet light cross-linking type elastic emulsion, remaining defoamer, water-miscible paint toughener, fungicidal preservative, mould inhibitor and other thickening materials except Mierocrystalline cellulose are added successively in the mixture that 2. step is prepared, and disperse 10-15min, regulate pH to 8.5-9.5, viscosity is 100-110KU;

4. under the rotating speed of 500-600rpm, in the mixture that 3. step is prepared, add modified silicasol, and disperse 3-6min to mixing.

Described step 2. in the consumption of defoamer be 1/2 of himself gross weight, use this preferred ratio to mix at twice, make defoamer dispersion in preparation process evenly, defoaming effect is better.

Compared with prior art, the present patent application has the following advantages:

1) ultraviolet light cross-linking type elastic emulsion, to arrange in pairs or groups preferred color stuffing (i.e. titanium dioxide and various filler), by the rational PVC design of color stuffing, coordinate modified silicasol simultaneously, make the flat emulsion paint that is coated with of this organic-inorganic composite high dirt resistance elasticity can reach high dirt resistance (contamination resistance < 12%), high-weatherability;

2) preparation method's simple and fast;

3) batch production is easy to management and control;

4) application property is excellent: froth breaking is quick, anti-splashing and levelling property excellence, the smooth still circle of paint film;

5) this superelevation stain-resistant exterior wall elasticity is flat is coated with emulsion paint color-adjustable and color developing is excellent, and storage stability good (not stratified, not gel);

6) low cost.

Embodiment

Below in conjunction with each embodiment, technical scheme of the present invention is described in detail.

Raw material sources:

Mierocrystalline cellulose: sub-to imperial 250HBR;

PH adjusting agent: Tao Shi AMP-95;

Dispersion agent: Sheng Nuopuke SN-5040 and ROHM AND HAAS CA-2500;

Wetting agent: Sheng Nuopuke SN-WET996;

Frostproofer: Depew chemical industry ethylene glycol, propylene glycol;

Defoamer: extra large river NXZ and A10;

Titanium dioxide: favour cloud titanium industry R-668;

Water-ground limestone: Jinpeng 800 order coarse whiting;

Calcined kaolin: cover the white calcined kaolin of western ultra-fine height;

Mica powder: US business's chemistry ultrafine mica powder;

Process white: two profit chemical industry CB-1250A;

Talcum powder: wide good fortune MS-1250

Ultraviolet light cross-linking type elastic emulsion: the 2468M of Tao Shi;

Water-miscible paint toughener: Kang Yu chemical industry RA-11;

Fungicidal preservative: Sol HF;

Mould inhibitor: Sol EPW;

Thickening material: ROHM AND HAAS TT935 and RM-8W;

Modified silicasol: JN-830A coagulates in section.

Embodiment 1

A kind of organic-inorganic composite high dirt resistance elasticity is flat is coated with emulsion paint, and it comprises the component of following weight ratio:

1. under the rotating speed of 500rpm, Xiang Shuizhong adds Mierocrystalline cellulose and mixes, and disperses 15min;

2. under the rotating speed of 800rpm, in the mixture that 1. step is prepared, add 2-amino-2-methyl-1-propanol successively, ammonium polyacrylate dipersant, poly-hydroxyalkyl ether nonionic wetting agent, ethylene glycol, mineral oil defoaming agent, titanium dioxide, water-ground limestone and calcined kaolin mix, improve rotating speed afterwards to 1500rpm, under this rotating speed, mixture is dispersed to fineness≤60 μm, wherein, the consumption of mineral oil defoaming agent is himself gross weight 1/2;

3. under the rotating speed of 500rpm, ultraviolet light cross-linking type elastic emulsion, remaining mineral oil defoaming agent, water-miscible paint toughener, fungicidal preservative, mould inhibitor and alkali swelling type thickening material is added successively in the mixture that 2. step is prepared, and disperse 15min, regulate pH to 9.0, viscosity is 105KU;

4., under the rotating speed of 500rpm, in the mixture that 3. step is prepared, adding modified silicasol (pH is 9, and solid content is 27%, and median size is 20nm), and disperseing 5min to mixing.

Embodiment 2

1. under the rotating speed of 800rpm, Xiang Shuizhong adds Mierocrystalline cellulose and mixes, and disperses 8min;

2. under the rotating speed of 1200rpm, in the mixture that 1. step is prepared, add ammoniacal liquor, polycarboxylate sodium's dispersion agent, wetting agent, propylene glycol, water-based organic silicon defoamer, titanium dioxide, water-ground limestone and process white successively mix, improve rotating speed afterwards to 1500rpm, under this rotating speed, mixture is dispersed to fineness≤60 μm, wherein, himself gross weight 70% of consumption of water-based organic silicon defoamer;

3. under the rotating speed of 800rpm, ultraviolet light cross-linking type elastic emulsion, remaining water-based organic silicon defoamer, water-miscible paint toughener, fungicidal preservative, mould inhibitor and polyurethanes thickening material is added successively in the mixture that 2. step is prepared, and disperse 10min, regulate pH to 8.5, viscosity is 110KU;

4., under the rotating speed of 600rpm, in the mixture that 3. step is prepared, adding modified silicasol (pH is 10, and solid content is 25%, and median size is 30nm), and disperseing 5min to mixing.

Embodiment 3

1. under the rotating speed of 600rpm, Xiang Shuizhong adds Mierocrystalline cellulose and mixes, and disperses 10min;

2. under the rotating speed of 1100rpm, in the mixture that 1. step is prepared, add pH adjusting agent, the mixture of ammonium polyacrylate salt dispersion and the mixture of polycarboxylate sodium's dispersion agent, wetting agent, frostproofer, mineral oil defoaming agent and water-based organic silicon defoamer, titanium dioxide, water-ground limestone and mica powder successively mix, improve rotating speed afterwards to 1500rpm, under this rotating speed, mixture is dispersed to fineness≤60 μm, wherein, the consumption of the mixture of mineral oil defoaming agent and water-based organic silicon defoamer is himself gross weight 30%;

3. under the rotating speed of 600rpm, the mixture of the mixture of ultraviolet light cross-linking type elastic emulsion, remaining mineral oil defoaming agent and water-based organic silicon defoamer, water-miscible paint toughener, fungicidal preservative, mould inhibitor and alkali swelling type thickening material and polyurethanes thickening material is added successively in the mixture that 2. step is prepared, and disperse 12min, regulate pH to 9.5, viscosity is 100KU;

4., under the rotating speed of 600rpm, in the mixture that 3. step is prepared, adding modified silicasol (pH is 8, and solid content is 30%, and median size is 15nm), and disperseing 5min to mixing.

Embodiment 4

1. under the rotating speed of 700rpm, Xiang Shuizhong adds Mierocrystalline cellulose and mixes, and disperses 10min;

2. under the rotating speed of 1000rpm, in the mixture that 1. step is prepared, add pH adjusting agent successively, dispersion agent, wetting agent, frostproofer, defoamer, titanium dioxide, water-ground limestone mix, improve rotating speed afterwards to 1500rpm, under this rotating speed, mixture is dispersed to fineness≤60 μm, wherein, the consumption of defoamer is himself gross weight 35%;

3. under the rotating speed of 700rpm, ultraviolet light cross-linking type elastic emulsion, remaining defoamer, water-miscible paint toughener, fungicidal preservative, mould inhibitor and other thickening materials except Mierocrystalline cellulose are added successively in the mixture that 2. step is prepared, and disperse 11min, regulate pH to 8.5, viscosity is 100KU;

4. under the rotating speed of 550rpm, in the mixture that 3. step is prepared, add modified silicasol, and disperse 5min to mixing.

Embodiment 5

2. under the rotating speed of 1200rpm, in the mixture that 1. step is prepared, add pH adjusting agent, dispersion agent, wetting agent, frostproofer, defoamer, titanium dioxide, water-ground limestone and talcum powder successively mix, improve rotating speed afterwards to 1800rpm, under this rotating speed, mixture is dispersed to fineness≤60 μm, wherein, the consumption of defoamer is himself gross weight 45%;

3. under the rotating speed of 500rpm, ultraviolet light cross-linking type elastic emulsion, remaining defoamer, water-miscible paint toughener, fungicidal preservative, mould inhibitor and other thickening materials except Mierocrystalline cellulose are added successively in the mixture that 2. step is prepared, and disperse 15min, regulate pH to 8-9.5, viscosity is 100KU;

4. under the rotating speed of 600rpm, in the mixture that 3. step is prepared, add modified silicasol, and disperse 3min to mixing.

Embodiment 6

2. under the rotating speed of 1200rpm, in the mixture that 1. step is prepared, add pH adjusting agent successively, dispersion agent, wetting agent, frostproofer, defoamer, titanium dioxide, calcined kaolin mix, improve rotating speed afterwards to 1600rpm, under this rotating speed, mixture is dispersed to fineness≤60 μm, wherein, the consumption of defoamer is himself gross weight 20%;

4. under the rotating speed of 600rpm, in the mixture that 3. step is prepared, add modified silicasol, and disperse 6min to mixing.

Embodiment 7

The difference of itself and embodiment 1 is: described filler is process white.

Embodiment 8

The difference of itself and embodiment 2 is: described filler is talcum powder.

Embodiment 9

The difference of itself and embodiment 3 is: described filler is mica powder.

Embodiment 10

The difference of itself and embodiment 4 is: described filler is calcined kaolin and process white.

Embodiment 11

The difference of itself and embodiment 5 is: described filler is calcined kaolin and talcum powder.

Embodiment 12

The difference of itself and embodiment 6 is: described filler is calcined kaolin and mica powder.

Embodiment 13

The difference of itself and embodiment 1 is: described filler is process white and talcum powder.

Embodiment 14

The difference of itself and embodiment 2 is: described filler is process white and mica powder.

Embodiment 15

The difference of itself and embodiment 3 is: described filler is talcum powder and mica.

Embodiment 16

The difference of itself and embodiment 4 is: described filler is water-ground limestone, calcined kaolin and process white.

Embodiment 17

The difference of itself and embodiment 5 is: described filler is water-ground limestone, calcined kaolin and mica powder.

Embodiment 18

The difference of itself and embodiment 6 is: described filler is water-ground limestone, calcined kaolin and talcum powder.

Embodiment 19

The difference of itself and embodiment 1 is: described filler is water-ground limestone, process white and talcum powder.

Embodiment 20

The difference of itself and embodiment 2 is: described filler is water-ground limestone, process white and mica powder.

Embodiment 21

The difference of itself and embodiment 3 is: described filler is water-ground limestone, talcum powder and mica powder.

Embodiment 22

The difference of itself and embodiment 4 is: described filler is calcined kaolin, process white, talcum powder.

Embodiment 23

The difference of itself and embodiment 5 is: described filler is calcined kaolin, process white, mica powder.

Embodiment 24

The difference of itself and embodiment 6 is: described filler is process white, talcum powder and mica powder.

Embodiment 25

The difference of itself and embodiment 1 is: described filler is water-ground limestone, calcined kaolin, process white and talcum powder.

Embodiment 26

The difference of itself and embodiment 2 is: described filler is water-ground limestone, calcined kaolin, sulfate precipitate and mica powder.

Embodiment 27

The difference of itself and embodiment 3 is: described filler is water-ground limestone, process white, talcum powder and mica.

Embodiment 28

The difference of itself and embodiment 4 is: described filler is calcined kaolin, process white, talcum powder and mica powder.

Embodiment 29

The difference of itself and embodiment 5 is: described filler is water-ground limestone, calcined kaolin, process white, talcum powder and mica powder.

Embodiment 30

The difference of itself and embodiment 6 is: described filler is calcined kaolin, talcum powder and mica powder.

Experimental data

Test the flat emulsion paint that is coated with of the organic-inorganic composite high dirt resistance elasticity obtained by each embodiment according to standard JG/T172-2014 " elastic building paint ", every technical feature data are as shown in the table:

Organic-inorganic composite high dirt resistance elasticity obtained by each embodiment put down be coated with (referring to grind) color developing of emulsion paint and storage stability data as shown in the table:

Shown by the practical application of the every experimental data in table and each embodiment, organic-inorganic composite high dirt resistance elasticity in the present invention prepared by each embodiment puts down the technical requirements that the properties being coated with emulsion paint all can meet JG/T172-2014 " elastic building paint ", meet high dirt resistance (contamination resistance < 12%) simultaneously, and the consistency of to starch with current color on market and color developing good, hot storage stability excellence (not stratified not gel), this preparation method's simple and fast and production process is easy to management and control, low cost of manufacture, cost performance is high.

Organic-inorganic composite high dirt resistance elasticity of the present invention flat painting emulsion paint 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

1. organic-inorganic composite high dirt resistance elasticity is flat is coated with an emulsion paint, it is characterized in that: it is formulated by the component of following weight ratio,

2. organic-inorganic composite high dirt resistance elasticity according to claim 1 is flat is coated with emulsion paint, it is characterized in that: described pH adjusting agent is 2-amino-2-methyl-1-propanol or ammoniacal liquor.

3. organic-inorganic composite high dirt resistance elasticity according to claim 1 is flat is coated with emulsion paint, it is characterized in that: described dispersion agent is one or both arbitrary combination in ammonium polyacrylate dipersant or polycarboxylate sodium's dispersion agent.

4. organic-inorganic composite high dirt resistance elasticity according to claim 1 is flat is coated with emulsion paint, it is characterized in that: described wetting agent is poly-hydroxyalkyl ether nonionic wetting agent.

5. organic-inorganic composite high dirt resistance elasticity according to claim 1 is flat is coated with emulsion paint, it is characterized in that: described defoamer is one or both arbitrary combination in mineral oil defoaming agent or water-based organic silicon defoamer.

6. organic-inorganic composite high dirt resistance elasticity according to claim 1 is flat is coated with emulsion paint, it is characterized in that: described filler is one or both and two or more above arbitrary combination in water-ground limestone, calcined kaolin, process white, talcum powder and mica powder, and described frostproofer is ethylene glycol or propylene glycol.

7. organic-inorganic composite high dirt resistance elasticity according to claim 1 is flat is coated with emulsion paint, it is characterized in that: the pH of described modified silicasol is 8-10, and solid content is 25-30%, and median size is 15-30nm.

8. organic-inorganic composite high dirt resistance elasticity according to claim 1 is flat is coated with emulsion paint, it is characterized in that: described other thickening materials except Mierocrystalline cellulose are one in alkali swelling type thickening material or polyurethanes thickening material or its combination.

9. the organic-inorganic composite high dirt resistance elasticity according to any one of claim 1-8 equals the preparation method being coated with emulsion paint, it is characterized in that: it comprises the step that next coming in order carry out,

10. organic-inorganic composite high dirt resistance elasticity according to claim 9 is put down and is coated with the preparation method of emulsion paint, it is characterized in that: described step 2. in the consumption of defoamer be 1/2 of himself gross weight.