CN105462426A - Waterborne biological-based paint with efficient weather resistance, water resistance and stain resistance and preparation method thereof - Google Patents

Abstract

The invention relates to a waterborne biological-based paint with efficient weather resistance, water resistance and stain resistance; the paint is composed of the following raw materials: water, cellulose, a pH regulator, a wetting agent, a dispersion agent, heavy calcium carbonate, calcined kaolin, precipitated barium sulphate, titanium dioxide, an emulsion, a film-forming auxiliary agent, a bactericidal mildew preventive, a polyurethane thickener or an alkali swelling type thickener, an adhesive force enhancing agent, an antifreezing agent, and a defoaming agent. The paint overcomes the shortcomings that a conventional exterior wall paint cannot have both environmental protection and efficient weather resistance, water resistance and stain resistance, and has the advantages of having both environmental protection and good weather resistance, water resistance and stain resistance.

Description

One is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint and preparation method thereof

Technical field

The present invention relates to that one is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint and preparation method thereof, be applied in exterior coating field.

Background technology

According to " national chemical building material industry the Tenth Five-Year Plan (2001-2005) and development planning outline in 2015 ", Tenth Five-Year Plan Period, China's urban housing construction will develop with the construction speed of 500,000,000 square meter every year, the main task of China's coating industry development will be attached most importance to building coating, make the application of building coating in decoration of exterior wall account for more than 60 parts.

But the synthesis of coating prepare the starting material overwhelming majority be all rely on petroleum-based energy, in the past few decades, along with petroleum resources worsening shortages, price rise steadily, and the mankind are to the worry of Global warming, environmental pollution, coatings industry experienced by great change in the selection of material category and technical elements.Increasing enterprise is is researching and developing bio-based water-based substitute increases or expands its product line, provides more both environmental protection but do not affect the paint vehicle product selection of product performance for formulator and terminal user.

The energy of the so wide market outlook of building external paint worsening shortages in addition, its development is opportunity is also challenge.Exterior coating, while playing decorative effect attractive in appearance, is also directly exposed in the Nature, the invasion and attack of weather and Exposure to Sunlight, therefore, requires that exterior coating will possess the more excellent performance of more general coating, as performances such as weather-proof, water-fast, stain resistants.

Existing tool on the market has environment-friendly exterior wall paint that is efficiently weather-proof, water-fast, contaminated resistance and still belongs to blank.Therefore provide a kind of can be used in the not only environmental protection on all kinds of exterior wall but also the aqueous biological base paint with good weather-proof, water-fast, contaminated resistance and preparation method thereof oneself become when business urgently.

Summary of the invention

The invention provides that one is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint and preparation method thereof, which overcome existing exterior wall paint and can not possess not only environmental protection but also tool is efficiently weather-proof, water-fast, the shortcoming of contaminated resistance simultaneously, it has the advantage of environmental protection and good weather-proof, water-fast, contaminated resistance simultaneously.

Technical scheme of the present invention is as follows:

One is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint, it is made up of the raw material of following weight part: water 17-20 part, Mierocrystalline cellulose 0.15-0.3 part, pH adjusting agent 0.1-0.25 part, wetting agent 0.1-0.4 part, dispersion agent 0.1-0.6 part, coarse whiting 14-25 part, calcined kaolin 0-5 part, process white 3-10 part, titanium dioxide 14-20 part, emulsion 25-40 part, film coalescence aid 0.5-1.5 part, biocide mildewcide 0.2-0.4 part, polyurethane thickener 0-0.2 part or alkali swelling type thickening material 0-0.25 part, adhesive promoter 0.1-0.2 part, frostproofer 0.5-5 part, defoamer 0.3-0.6 part, wherein, emulsion is made up of the raw material of following weight part, water 40-50 part, methyl methacrylate 10-18 part, n-butyl acrylate 10-20 part, Isooctyl acrylate monomer 2-8 part, dibutyl itaconate 10-25 part, initiator 0.1-0.3 part, pH buffer reagent 0.1-0.2 part, anionic emulsifier 0.3-1.5 part, nonionic emulsifying agent 0.4-0.6 part, tri-isopropanolamine 0.1-0.8 part.

The application efficiently weather-proof, water-fast, stain resistant aqueous biological base paint is nonpoisonous and tasteless, safety and environmental protection.It is raw-material emulsion that its main component has been selected with bio-based, namely have employed by the bio-based modification acrylate class emulsion of the modified synthesis such as dibutyl itaconate monomer and methacrylate monomer, its solid content is 49%, without APEO, and stable in properties, polymerization effect are good, select the fillers such as pigment anatase titanium dioxide, process white in addition and regulate emulsion, the color stuffing ratio of whole composition, thus the performance of efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint weathering making to prepare, water-fast, stain resistant, resistance to chemical attack is better.When by after this painting brush is on external wall; comprise the components such as emulsion, color stuffing, film coalescence aid and form paint film; while protecting original exterior wall base material, also considerably improve the performances such as efficiently weather-proof, water-fast, the stain resistant of paint film, make base material obtain permanent protection and decoration.

Described Mierocrystalline cellulose is Natvosol or hydroxypropylcellulose, and defoamer is mineral oil antifoam agent or silica modified defoamer, and frostproofer is ethylene glycol or propylene glycol.Preferred Mierocrystalline cellulose, defoamer and frostproofer is used to be conducive to promoting the correlated performances such as the uniformity coefficient of paint film and weather-proof, water-fast, stain resistant.

Described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint, it is made up of the raw material of following weight part, 19.8 parts, water, Natvosol 0.25 part, pH adjusting agent 0.2 part, wetting agent 0.3 part, dispersion agent 0.5 part, coarse whiting 20 parts, calcined kaolin 2 parts, process white 6 parts, titanium dioxide 18 parts, emulsion 30 parts, film coalescence aid 0.9 part, biocide mildewcide 0.2 part, polyurethane thickener 0.2 part, adhesive promoter 0.15 part, ethylene glycol 1 part, mineral oil antifoam agent 0.5 part.Efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint of above-mentioned preferred component and proportioning weather-proof, water-fast, contaminated resistance is better.

Described film coalescence aid is 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate; Wetting agent is polymethyl acid amide, and dispersion agent is sodium polymethacrylate, and biocide mildewcide is chlorine thiazolinone, and titanium dioxide is anatase titanium dioxide.Above-mentioned preferred film coalescence aid, wetting agent, dispersion agent, biocide mildewcide and titanium dioxide can make prepared efficiently weather-proof, water-fast, stain resistant aqueous biological base paint paint film formation Du Gengjia, and anti-biotic and mould proof can be better.

The preparation method of described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint, comprises the following steps of carrying out successively at ambient temperature and pressure:

1. emulsion preparation technology: water, pH buffer reagent, anionic emulsifier, nonionic emulsifying agent, initiator, methyl methacrylate, n-butyl acrylate, Isooctyl acrylate monomer and dibutyl itaconate are mixed, and with the rotating speed of 400-600rpm dispersion 28-32min, be prepared into pre-emulsification mixed solution; From described pre-emulsification mixed solution, take out the amount being less than 1/2 of its cumulative volume carry out stirring and be slowly warming up to 70-80 DEG C, by the time when pre-emulsification mixed solution becomes blueness, remaining pre-emulsification mixed solution is slowly added dropwise to wherein, isothermal reaction 0.5-1.5h afterwards, be warming up to 75-85 DEG C of insulation 0.3-0.8h subsequently, drip tri-isopropanolamine after being down to room temperature again and regulate pH to 7-8, filter, obtain described emulsion;

2. pulping process:

After water and Mierocrystalline cellulose being mixed in described ratio, limit is disperseed to add pH adjusting agent, defoamer, wetting agent, dispersion agent and biocide mildewcide below at 300-600rpm rotating speed, dispersion 3-5min; 2-4min is disperseed afterwards under 800-1200rpm rotating speed; Then limit is disperseed to add titanium dioxide, coarse whiting, calcined kaolin and process white below at 1500-1800rpm rotating speed, dispersion 18-22min, i.e. obtained slurries;

3. paint technique:

Under 400-600rpm rotating speed, in the slurries that 1. step obtains, dispersion limit, limit slowly adds the emulsion that 1. step is prepared, dispersion 2-4min; Disperse limit to add film coalescence aid, frostproofer, thickening material and adhesive promoter below in 800-1000rpm rotating speed afterwards, dispersion 4-6min is even to mixing liquid, i.e. obtained described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint.

Efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint preparation technology of the application is simple, low-carbon environment-friendly, has very strong industrialization ability and wide market outlook.

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

1) biological fundamental mode starting material are adopted, safety and environmental protection;

2) compared with the exterior wall water-borne paint prepared with prior art, after brushing is on external wall base material, comprise bio-based modification acrylate class emulsion, titanium dioxide, process white, coarse whiting, calcined kaolin, film coalescence aid etc. all can at decoration in interior component, while protection existing building base material, strengthen the weather-proof of self paint film significantly, water-fast, the performances such as stain resistant, thus make base material obtain permanent protection and decoration, concrete testing data is: this is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint is coated on building external paint enterprising pedestrian's work anti-aging test 1000h, the aberration Δ E value of its paint film is less than 1.0, carry out water-fast test (being greater than 300h) without shedding foaming cracking phenomena, carry out stain resistant test (2 circulation) numerical value and be less than 10 parts,

3) simple, the low-carbon environment-friendly of its preparation technology, has very strong industrialization ability and wide market outlook.

Figure of description

Fig. 1 is the utility appliance schematic diagram scrubbing test.

Label declaration:

1 black plastic sheet, 2 wet film preparing devices, 3 paint 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;

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;

Film coalescence aid: TEXANOL multifunctional assistant, Yi Si Man.

Embodiment 1

One is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint, it is made up of the raw material of following weight part: 19.8 parts, water, Natvosol 0.25 part, pH adjusting agent 0.2 part, polymethyl acid amide 0.3 part, sodium polymethacrylate 0.5 part, coarse whiting 20 parts, calcined kaolin 2 parts, process white 6 parts, anatase titanium dioxide 18 parts, emulsion 30 parts, 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 0.9 part, chlorine thiazolinone 0.2 part, polyurethane thickener 0.2 part, adhesive promoter 0.15 part, ethylene glycol 1 part, mineral oil antifoam agent 0.5 part.Wherein, emulsion is made up of the raw material of following weight part: 45 parts, water, methyl methacrylate 16 parts, n-butyl acrylate 15 parts, Isooctyl acrylate monomer 6 parts, dibutyl itaconate 20 parts, initiator 0.2 part, pH buffer reagent 0.15 part, anionic emulsifier 1.1 parts, nonionic emulsifying agent 0.5 part, tri-isopropanolamine 0.5 part;

This is efficiently weather-proof, water-fast, the preparation method of stain resistant aqueous biological base paint, and it comprises the following steps of carrying out successively at ambient temperature and pressure:

1. emulsion preparation technology: water, pH buffer reagent, anionic emulsifier, nonionic emulsifying agent, initiator, methyl methacrylate, n-butyl acrylate, Isooctyl acrylate monomer and dibutyl itaconate are mixed, and with the rotating speed of 500rpm dispersion 30min, be prepared into pre-emulsification mixed solution; From described pre-emulsification mixed solution, take out the amount being less than 1/2 of its cumulative volume carry out stirring and be slowly warming up to 75 DEG C, by the time when pre-emulsification mixed solution becomes blueness, remaining pre-emulsification mixed solution is slowly added dropwise to wherein, isothermal reaction 1.0h afterwards, be warming up to 80 DEG C of insulation 0.5h subsequently, drip tri-isopropanolamine after being down to room temperature again and regulate pH to 7.5, filter, obtain described emulsion;

2. pulping process:

After water and Natvosol being mixed in described ratio, limit is disperseed to add pH adjusting agent, mineral oil antifoam agent, polymethyl acid amide, sodium polymethacrylate and chlorine thiazolinone below at 500rpm rotating speed, dispersion 4min; Under 1000rpm rotating speed, disperse 3min afterwards, then disperse limit to add anatase titanium dioxide, coarse whiting, calcined kaolin and process white below at 1600rpm rotating speed, dispersion 20min, be i.e. obtained slurries;

3. paint technique:

Under 500rpm rotating speed, in the slurries that 1. step obtains, dispersion limit, limit slowly adds the emulsion that 1. step is prepared, dispersion 3min; Limit is disperseed to add 2 below in 900rpm rotating speed afterwards, 2,4-trimethylammonium-1,3-pentanediol mono isobutyrate, ethylene glycol, polyurethane thickener and adhesive promoter, dispersion 5min is even to mixing liquid, i.e. obtained described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint.

Embodiment 2

One is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint, and it is made up of the raw material of following weight part: 17 parts, water, hydroxypropylcellulose 0.3 part, pH adjusting agent 0.1 part, wetting agent 0.4 part, dispersion agent 0.1 part, coarse whiting 25 parts, process white 10 parts, titanium dioxide 14 parts, emulsion 40 parts, film coalescence aid 0.5 part, biocide mildewcide 0.4 part, alkali swelling type thickening material 0.25 part, adhesive promoter 0.1 part, propylene glycol 5 parts, silica modified defoamer 0.3 part.Wherein, emulsion is made up of the raw material of following weight part, 40 parts, water, methyl methacrylate 18 parts, n-butyl acrylate 10 parts, Isooctyl acrylate monomer 8 parts, dibutyl itaconate 10 parts, initiator-0.3 part, pH buffer reagent 0.1 part, anionic emulsifier 1.5 parts, nonionic emulsifying agent 0.4 part, tri-isopropanolamine 0.8 part.

This is efficiently weather-proof, water-fast, the preparation method of stain resistant aqueous biological base paint, and it comprises the following steps of carrying out successively at ambient temperature and pressure:

1. emulsion preparation technology: water, pH buffer reagent, anionic emulsifier, nonionic emulsifying agent, initiator, methyl methacrylate, n-butyl acrylate, Isooctyl acrylate monomer and dibutyl itaconate are mixed, and with the rotating speed of 400rpm dispersion 32min, be prepared into pre-emulsification mixed solution; From described pre-emulsification mixed solution, take out the amount being less than 1/2 of its cumulative volume carry out stirring and be slowly warming up to 70 DEG C, by the time when pre-emulsification mixed solution becomes blueness, remaining pre-emulsification mixed solution is slowly added dropwise to wherein, isothermal reaction 1.5h afterwards, be warming up to 75 DEG C of insulation 0.8h subsequently, drip tri-isopropanolamine after being down to room temperature again and regulate pH to 7, filter, obtain described emulsion;

2. pulping process:

After water and hydroxypropylcellulose being mixed in described ratio, limit is disperseed to add pH adjusting agent, silica modified defoamer, wetting agent, dispersion agent and biocide mildewcide below at 300rpm rotating speed, dispersion 5min; 4min is disperseed afterwards under 800rpm rotating speed; Then disperse limit to add titanium dioxide, coarse whiting, calcined kaolin and process white below at 1500rpm rotating speed, the rotating speed of dispersion is, dispersion 22min, i.e. obtained slurries;

3. paint technique:

Under 400rpm rotating speed, in the slurries that 1. step obtains, dispersion limit, limit slowly adds the emulsion that 1. step is prepared, dispersion 4min; Disperse limit to add film coalescence aid, propylene glycol, alkali swelling type thickening material and adhesive promoter below in 800pm rotating speed afterwards, dispersion 6min is even to mixing liquid, i.e. obtained described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint.

Embodiment 3

One is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint, and it is made up of the raw material of following weight part: 20 parts, water, Mierocrystalline cellulose 0.15 part, pH adjusting agent 0.25 part, wetting agent 0.1 part, dispersion agent 0.6 part, coarse whiting 14 parts, calcined kaolin 5 parts, process white 3 parts, titanium dioxide 20 parts, emulsion 25 parts, film coalescence aid 1.5 parts, biocide mildewcide 0.3 part, polyurethane thickener 0.1 part, adhesive promoter 0.2 part, frostproofer 0.5 part, defoamer 0.6 part.Wherein, emulsion is made up of the raw material of following weight part, 50 parts, water, methyl methacrylate 10 parts, n-butyl acrylate 20 parts, Isooctyl acrylate monomer 2 parts, dibutyl itaconate 25 parts, initiator 0.1 part, pH buffer reagent 0.2 part, anionic emulsifier 0.3 part, nonionic emulsifying agent 0.6 part, tri-isopropanolamine 0.1 part.

This is efficiently weather-proof, water-fast, the preparation method of stain resistant aqueous biological base paint, and it comprises the following steps of carrying out successively at ambient temperature and pressure:

1. emulsion preparation technology: water, pH buffer reagent, anionic emulsifier, nonionic emulsifying agent, initiator, methyl methacrylate, n-butyl acrylate, Isooctyl acrylate monomer and dibutyl itaconate are mixed, and with the rotating speed of 600rpm dispersion 28min, be prepared into pre-emulsification mixed solution; From described pre-emulsification mixed solution, take out the amount being less than 1/2 of its cumulative volume carry out stirring and be slowly warming up to 80 DEG C, by the time when pre-emulsification mixed solution becomes blueness, remaining pre-emulsification mixed solution is slowly added dropwise to wherein, isothermal reaction 0.5h afterwards, be warming up to 85 DEG C of insulation 0.h subsequently, drip tri-isopropanolamine after being down to room temperature again and regulate pH to 8, filter, obtain described emulsion;

2. pulping process:

After water and Mierocrystalline cellulose being mixed in described ratio, limit is disperseed to add pH adjusting agent, defoamer, wetting agent, dispersion agent and biocide mildewcide below at 600rpm rotating speed, dispersion 3min; 2min is disperseed afterwards under 1200rpm rotating speed; Then limit is disperseed to add titanium dioxide, coarse whiting, calcined kaolin and process white below at 1800rpm rotating speed, dispersion 18min, i.e. obtained slurries;

3. paint technique:

Under 600rpm rotating speed, in the slurries that 1. step obtains, dispersion limit, limit slowly adds the emulsion that 1. step is prepared, dispersion 2min; Disperse limit to add film coalescence aid, frostproofer, polyurethane thickener and adhesive promoter below in 1000rpm rotating speed afterwards, dispersion 4min is even to mixing liquid, i.e. obtained described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint.

Embodiment 4

One is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint, and it is made up of the raw material of following weight part: 19 parts, water, Mierocrystalline cellulose 0.25 part, pH adjusting agent 0.2 part, wetting agent 0.25 part, dispersion agent 0.3 part, coarse whiting 18 parts, calcined kaolin 2.5 parts, process white 6 parts, anatase titanium dioxide 16 parts, emulsion 28 parts, film coalescence aid 1.0 parts, biocide mildewcide 0.2 part, alkali swelling type thickening material 0-0.25 part, adhesive promoter 0.17 part, frostproofer 3.5 parts, defoamer 0.45 part.Wherein, emulsion is made up of the raw material of following weight part, 50 parts, water, methyl methacrylate 10 parts, n-butyl acrylate 20 parts, Isooctyl acrylate monomer 2 parts, dibutyl itaconate 25 parts, initiator 0.1 part, pH buffer reagent 0.2 part, anionic emulsifier 0.3 part, nonionic emulsifying agent 0.6 part, tri-isopropanolamine 0.1 part.

This is efficiently weather-proof, water-fast, the preparation method of stain resistant aqueous biological base paint, and it comprises the following steps of carrying out successively at ambient temperature and pressure:

1. emulsion preparation technology: water, pH buffer reagent, anionic emulsifier, nonionic emulsifying agent, initiator, methyl methacrylate, n-butyl acrylate, Isooctyl acrylate monomer and dibutyl itaconate are mixed, and with the rotating speed of 600rpm dispersion 28min, be prepared into pre-emulsification mixed solution; From described pre-emulsification mixed solution, take out the amount being less than 1/2 of its cumulative volume carry out stirring and be slowly warming up to 80 DEG C, by the time when pre-emulsification mixed solution becomes blueness, remaining pre-emulsification mixed solution is slowly added dropwise to wherein, isothermal reaction 0.5h afterwards, be warming up to 85 DEG C of insulation 0.h subsequently, drip tri-isopropanolamine after being down to room temperature again and regulate pH to 8, filter, obtain described emulsion;

2. pulping process:

After water and Mierocrystalline cellulose being mixed in described ratio, limit is disperseed to add pH adjusting agent, defoamer, wetting agent, dispersion agent and biocide mildewcide below at 500rpm rotating speed, dispersion 4min; 3min is disperseed afterwards under 1000rpm rotating speed; Then limit is disperseed to add anatase titanium dioxide, coarse whiting, calcined kaolin and process white below at 1600rpm rotating speed, dispersion 20min, i.e. obtained slurries;

3. paint technique:

Under 500rpm rotating speed, in the slurries that 1. step obtains, dispersion limit, limit slowly adds the emulsion that 1. step is prepared, dispersion 3min; Disperse limit to add film coalescence aid, frostproofer, alkali swelling type thickening material and adhesive promoter below in 900rpm rotating speed afterwards, dispersion 5min is even to mixing liquid, i.e. obtained described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint.

Testing data

One, water-fast, contamination resistance correlation test

Table one is efficiently weather-proof, water-fast, each embodiment of stain resistant aqueous biological base paint is according to the property indices testing data recorded according to GB/T9755-2001 standard

Efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint of embodiment 1 is comprehensively optimum at stain resistant, properties that water tolerance is relevant as can be seen from Table I, is 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

A efficiently weather-proof, water-fast, stain-resistant exterior wall aqueous biological base paint 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) stain resistant test

By efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint of each embodiment 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 parts 7 days, prepares 3 blocks of plates and A, B, C altogether.Efficiently weather-proof, water-fast, the stain resistant aqueous biological base painting brush of each embodiment are applied 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 parts, 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.

(5) test method of alkali resistance test is as follows:

Efficiently weather-proof by what prepare, water-fast, stain resistant aqueous biological base 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, 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 parts 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 ".

(6) abrasion resistance test

If needed, filtration embodiment 1 sample is to remove wherein all skinning and particle.As shown in Figure 1, be placed on by black plastic sheet 1 on sheet glass or other smooth plate, stain resistant aqueous biological base paint efficiently weather-proof, water-fast on blade coating on black plastic sheet with wet film preparing device (200um) 2 forms film 3, prepares 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 that humidity is 50 ± 5 parts.Use the washing powder water of 0.5 part 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 efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint of testing example 2-4.

(7) test method of water resistance test is as follows:

Efficiently weather-proof by what prepare, water-fast, stain resistant aqueous biological base 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, 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 parts 7 days, then by A, B, C plate is soaked in water, observe after 96h, 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 ".

Two, atmospheric exposure test

Respectively get efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint 20g that prepare, add 0.6g carbon black color paste respectively, phthalocyanine blue mill base, iron oxide red mill base, iron oxide yellow mill base, lemon yellow mill base, bright red mill base, fuchsin mill base stir, and respectively by be adjusted to black, phthalocyanine blue, rust, iron oxide yellow look, lemon yellow, large red, carmetta 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.The test of model and embodiment 1 is prepared for carbonarius, this look prepares A, B two pieces of models as stated above, and the plate prepared is put in temperature 23 ± 2 DEG C, the environment maintenance 7d of humidity 50 ± 5 parts, getting B plate (remaining 1 block of A plate by reference plate after tune former carbonarius embodiment 1 cover) afterwards uses UV-A340 to irradiate value of chromatism Δ E (for qualified, Δ E≤0.5 is outstanding in Δ E≤1.0) after 1000 hours between test b plate and reference plate A.Same method testing example 1-4 is to the weather-proof value of chromatism Δ E of 7 kinds of colors.

Table two is efficiently weather-proof, water-fast, stain resistant aqueous biological base paint atmospheric exposure test data

By the visible the application of table two efficiently weather-proof, water-fast, stain resistant aqueous biological base paint no matter to organic look as phthalocyanine blue, large red, lemon yellow isochrome or inorganic look as carbon black, iron oxide red isochrome all have good weathering resistance.

Efficiently weather-proof, water-fast, stain resistant aqueous biological base paint 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 (5)

1. one kind efficient weather-proof, water-fast, stain resistant aqueous biological base paint, it is characterized in that: it is made up of the raw material of following weight part, water 17-20 part, Mierocrystalline cellulose 0.15-0.3 part, pH adjusting agent 0.1-0.25 part, wetting agent 0.1-0.4 part, dispersion agent 0.1-0.6 part, coarse whiting 14-25 part, calcined kaolin 0-5 part, process white 3-10 part, titanium dioxide 14-20 part, emulsion 25-40 part, film coalescence aid 0.5-1.5 part, biocide mildewcide 0.2-0.4 part, polyurethane thickener 0-0.2 part or alkali swelling type thickening material 0-0.25 part, adhesive promoter 0.1-0.2 part, frostproofer 0.5-5 part, defoamer 0.3-0.6 part,

Wherein, emulsion is made up of the raw material of following weight part, water 40-50 part, methyl methacrylate 10-18 part, n-butyl acrylate 10-20 part, Isooctyl acrylate monomer 2-8 part, dibutyl itaconate 10-25 part, initiator 0.1-0.3 part, pH buffer reagent 0.1-0.2 part, anionic emulsifier 0.3-1.5 part, nonionic emulsifying agent 0.4-0.6 part, tri-isopropanolamine 0.1-0.8 part.

2. efficiently weather-proof, water-fast, stain resistant aqueous biological base paint according to claim 1, it is characterized in that: described Mierocrystalline cellulose is Natvosol or hydroxypropylcellulose, defoamer is mineral oil antifoam agent or silica modified defoamer, and frostproofer is ethylene glycol or propylene glycol.

3. efficiently weather-proof, water-fast, stain resistant aqueous biological base paint according to claim 2, it is characterized in that: it is made up of the raw material of following weight part, 19.8 parts, water, Natvosol 0.25 part, pH adjusting agent 0.2 part, wetting agent 0.3 part, dispersion agent 0.5 part, coarse whiting 20 parts, calcined kaolin 2 parts, process white 6 parts, titanium dioxide 18 parts, emulsion 30 parts, film coalescence aid 0.9 part, biocide mildewcide 0.2 part, polyurethane thickener 0.2 part, adhesive promoter 0.15 part, ethylene glycol 1 part, mineral oil antifoam agent 0.5 part.

4. efficiently weather-proof, water-fast, stain resistant aqueous biological base paint according to claim 1, is characterized in that: described film coalescence aid is 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate; Wetting agent is polymethyl acid amide, and dispersion agent is sodium polymethacrylate, and biocide mildewcide is chlorine thiazolinone, and titanium dioxide is anatase titanium dioxide.

5., according to the preparation method of arbitrary described efficiently weather-proof, water-fast, the stain resistant aqueous biological base paint of claim 1-4, it is characterized in that: it comprises the following steps of carrying out successively at ambient temperature and pressure,

1. emulsion preparation technology: water, pH buffer reagent, anionic emulsifier, nonionic emulsifying agent, initiator, methyl methacrylate, n-butyl acrylate, Isooctyl acrylate monomer and dibutyl itaconate are mixed, and with the rotating speed of 400-600rpm dispersion 28-32min, be prepared into pre-emulsification mixed solution; From described pre-emulsification mixed solution, take out the amount being less than 1/2 of its cumulative volume carry out stirring and be slowly warming up to 70-80 DEG C, by the time when pre-emulsification mixed solution becomes blueness, remaining pre-emulsification mixed solution is slowly added dropwise to wherein, isothermal reaction 0.5-1.5h afterwards, be warming up to 75-85 DEG C of insulation 0.3-0.8h subsequently, drip tri-isopropanolamine after being down to room temperature again and regulate pH to 7-8, filter, obtain described emulsion;

2. pulping process:

After water and Mierocrystalline cellulose being mixed in described ratio, limit is disperseed to add pH adjusting agent, defoamer, wetting agent, dispersion agent and biocide mildewcide below at 300-600rpm rotating speed, dispersion 3-5min; 2-4min is disperseed afterwards under 800-1200rpm rotating speed; Then limit is disperseed to add titanium dioxide, coarse whiting, calcined kaolin and process white below at 1500-1800rpm rotating speed, dispersion 18-22min, i.e. obtained slurries;

3. paint technique:

Under 400-600rpm rotating speed, in the slurries that 1. step obtains, dispersion limit, limit slowly adds the emulsion that 1. step is prepared, dispersion 2-4min; Disperse limit to add film coalescence aid, frostproofer, thickening material and adhesive promoter below in 800-1000rpm rotating speed afterwards, dispersion 4-6min is even to mixing liquid, i.e. obtained described efficiently weather-proof, water-fast, stain resistant aqueous biological base paint.