A kind of water-borne coatings and preparation method thereof
Technical field
The present invention relates to paint field, particularly relate to a kind of water-borne coatings and preparation method thereof.
Background technology
As the saying goes " the seven points of constructions of three points of coating ", coating products performance has extremely important impact for the application property of coating.In the construction process of coating, due to the difference of form of construction work, final coating performance can be caused to differ greatly.Therefore, when product is constructed, often have the aspect such as construction environment, water quality requirement, workmen's specialty requirement, skill requirement and much limit requirement, when water-borne coatings above-mentioned requirements can not be met, coating after construction does not reach the performance standard of expected effect and film, so just causes product failure, schedule delays and spends a large amount of rework costs.Therefore, the practical problems that existing commercially available coating ubiquity workability is bad.
Along with market is constantly expected water-borne coatings application property individual demand, water-borne coatings kind is in continually developing, and its constructional method is also not limited to water-borne coatings concerned countries to the brushing mode in standard (as GB/T9756-2009 " resin latex dope ", GB/T9755-2001 " exterior wall coating material of synthetic resin emulsion ").And the viscosity of the application property of water-borne coatings and product, storage period, shear viscosity, pH value and the factor such as workmen, construction environment all have relation, and there is interaction between above-mentioned each factor and act on significantly.
In addition, water-borne coatings in the market generally adopts Natvosol as system thickening material, and its dissolution process is strict to the requirement of pH value, and the pollution being subject to water quality in production process produces a large amount of mushrooms causes the finished product to go bad.
Therefore, how to develop the water-borne coatings that a kind of application property is splendid, it can meet individual character construction demand of DIY, not limited, film performance after construction excellence during its construction by various factors, is this area scientific research personnel technical problem urgently to be resolved hurrily.
Summary of the invention
Technical problem solved by the invention be to overcome existing water-borne coatings be subject to application property condition (as product viscosity, be watered ratio, pH value and the factor such as workmen, construction environment) limitation, the defect that workability is not good, provides a kind of water-borne coatings and preparation method thereof.Water-borne coatings of the present invention not only gives decoration and the defencive function of coating, meet the requirement of country to the relevant objectionable impurities standard of water-borne coatings, and its form of construction work is not limited to water-borne coatings concerned countries to standard (as GB/T9756-2009 " resin latex dope ", GB/T9755-2001 " exterior wall coating material of synthetic resin emulsion ") in brushing mode, and can roller coating be adopted, spraying, criticize forms of construction work such as scraping, and to the viscosity of construction, construction environment, the professional of workmen is not strict with, be applicable to all kinds of crowd DIY to construct, and the stability of this water-borne coatings is good, film performance after using is good.
The present invention solves the problems of the technologies described above by the following technical programs.
The invention provides a kind of water-borne coatings, its composition of raw materials comprises the component of following mass percent: ACRYLIC EMULSION 15.2 ~ 50.2%, xanthan gum 0.065 ~ 0.09%, mineral dye 10.5 ~ 18.8%, filler 16.0 ~ 29.8%, wetting dispersing agent 0.6 ~ 2.3%, defoamer 0.1 ~ 0.5%, sterilant 0.4 ~ 4.0%, carbomer 0.1 ~ 3.2%, film coalescence aid 0.6 ~ 3.0%, frostproofer 1.0 ~ 4.2% and water 20.0 ~ 29.0%.
Wherein, described ACRYLIC EMULSION can be the ACRYLIC EMULSION that this area routine uses, and comprises pure-acrylic emulsion, organosilicon crylic acid latex or benzene emulsion etc.Described ACRYLIC EMULSION is preferably organosilicon crylic acid latex and/or pure-acrylic emulsion.Described ACRYLIC EMULSION preferably meets following index: high mechanical stability, thermostability, extremely low VOC, formaldehydeless residual, lower viscosity, splendid sprayability and self-leveling, solid content >=49wt%, sticking power≤1 grade, carries out water resistance test by GB/T1733-1993, the emulsion passed through for 168 hours.Described ACRYLIC EMULSION more preferably for Nantong Shengda Chemical Co., Ltd. produce SD-168 emulsion, Shanghai Bao Lijia Chemical Co., Ltd. produce BLJ-998AD emulsion and ROHM AND HAAS produce AC-261P emulsion in one or more.
Wherein, described xanthan gum refers to be sent out liquor-saturated by carbohydrate through Xanthomonas campestris, and the outer microbial polysaccharide of born of the same parents of generation, it has macromole special construction and colloid property, has extremely strong anti-oxidant and resistance to enzymolysis ability.The 1wt% aqueous solution of the described xanthan gum viscosity 23 DEG C time preferably≤100000mPas (testing method: 23 ± 0.5 DEG C use the test of GradeH viscometers).Described xanthan gum be more preferably Shandong Zhong Xuan limited-liability company produce xanthan gum, Kang Wei bio tech ltd, Henan produce xanthan gum and Shanghai Li Qi auxiliary chemicals company limited produce xanthan gum in one or more.
Wherein, described mineral dye can be weathering resistance that this area routine uses and reaches 5 grades and photostabilization reaches the mineral dye of 7 grades, can select kind and the color of mineral dye according to this area ordinary method.Described mineral dye is preferably rutile titanium white, carbon black or iron oxide yellow.
Wherein, described filler can be the filler that this area routine uses, and generally its oil number is less than 50g/100g, easily disperses, and has anti-powdering, and anti-settling property is good.Described filler is preferably one or more in sericite in powder, kaolin and water-ground limestone.Described sericite in powder is preferably wet method sericite in powder, is more preferably the GA-4 wet method sericite in powder of the production of Chuzhou Ge Rui mining industry company limited.Described kaolin be through eluriate selected, bleach, brighten, to calcine and the technique such as air flow super is refined, its order number is preferably more than 1250 orders, kaolinic strong covering power, have fabulous titanium white ductility, dispersiveness and suspension good, there is good anti-settling effect, the application property of coating, weathering resistance can be improved, the package stability of coating can be improved.Described kaolin is preferably calcined kaolin, one or more in the BMV60 calcined kaolin that the DB-1 calcined kaolin more preferably produced for China Kaolin Clay Co., Ltd., DB-2 calcined kaolin and Guangdong Bang Le industrial chemicals company limited produce.Described water-ground limestone should not contain heavy metal, is preferably AT-0026 water-ground limestone and/or the AT-0028 water-ground limestone of the production of Jiangxi Ao Te fine powder company limited.
Wherein, described wetting dispersing agent can be the wetting dispersing agent that this area routine uses, and it can reduce surface tension, has fabulous wetting and spreading ability, can improve the add-on of pigment and filler and not increase viscosity.Described wetting dispersing agent is preferably poly carboxylic acid amine salt wetting dispersing agent.Described poly carboxylic acid amine salt wetting dispersing agent preferably meets following performance index: described in 1wt%, the cloud point of the aqueous solution of poly carboxylic acid amine salt wetting dispersing agent is 27 ~ 30 DEG C, and the density of described poly carboxylic acid amine salt wetting dispersing agent is 1.05 ~ 1.08g/cm
3, described density records 20 DEG C time.Described wetting dispersing agent is one or more in Luo Diya (Rhodia) group the wetting dispersing agent WA200, the wetting dispersing agent CF-10 of Dow Chemical and the wetting dispersing agent X-405 that produce best.
Wherein, the high molecular polymer that described carbomer (Carbomer) is vinylformic acid bonding allyl sucrose or tetramethylolmethane allyl ether.Described carbomer is preferably one or more in carbomer 934, Acritamer 940 and Carbopol 941.
Wherein, described defoamer can be the defoamer that this area routine uses, and it generally has brokenly bubble property concurrently and presses down bubble property.Described defoamer is preferably modification polymethyl siloxane defoamer.Described modification polymethyl siloxane defoamer preferably meets following performance index: density 0.89 ~ 0.95g/cm
3, described density records 20 DEG C time.One or more in the defoamer BD-405 that the defoamer RH-900 that described defoamer more preferably provides for Guangzhou Rui He novel material Science and Technology Ltd., DOW Chemical company limited provide and defoamer BD-109.
Wherein, described sterilant can be the sterilant that this area routine uses, be preferably isothiazolinone biocide agent, it to be stable in water and not to discharge free formaldehyde, and effective to gram positive bacterium, gram negative bacterium, fungi and yeasts height.Described sterilant is more preferably the sterilant MIRECIDE-KW/600 that Lamirsa Experimental Study College of Spain produces.
Wherein, described film coalescence aid can be this area routine and uses film coalescence aid, preferably for film coalescence aid is the film coalescence aid Texanol that Eastman Chemical Co., Ltd. (Eastman) produces.
Wherein, described frostproofer can be the frostproofer that this area routine uses, and is preferably propylene glycol and/or ethylene glycol.
Wherein, described water can be this area routine water, is preferably deionized water.
In a better embodiment of the present invention, described water-borne coatings, its composition of raw materials comprises the component of following mass percent: described ACRYLIC EMULSION 15.2 ~ 50.2%, described xanthan gum 0.065 ~ 0.09%, described mineral dye 10.5 ~ 18.8%, described filler 16.0 ~ 29.8%, described wetting dispersing agent 0.6 ~ 2.3%, described defoamer 0.1 ~ 0.5%, described sterilant 0.4 ~ 4.0%, described carbomer 0.1 ~ 3.2%, described film coalescence aid 0.6 ~ 3.0%, described frostproofer 1.0 ~ 4.2% and described water 20.0 ~ 29.0%.
In in the present invention one better embodiment, described water-borne coatings, its composition of raw materials is made up of the component of following mass percent: described ACRYLIC EMULSION 15.2 ~ 47.6%, described xanthan gum 0.065 ~ 0.09%, described mineral dye 10.5 ~ 18.8%, described filler 16.0 ~ 29.8%, described wetting dispersing agent 0.6 ~ 2.3%, described defoamer 0.1 ~ 0.5%, described sterilant 0.4 ~ 4.0%, described carbomer 0.2 ~ 3.2%, described film coalescence aid 0.6 ~ 3.0%, described frostproofer 1.0 ~ 4.2% and described water 20.0 ~ 29.0%.
In the present invention, described water-borne coatings, its viscosity at 10 ~ 50 DEG C is 110 ~ 120KU (adopt the method in GB/T9269-2009 to test, but probe temperature being 10 ~ 50 DEG C), and its pH value at 10 ~ 50 DEG C is 8.4 ~ 8.7.Described water-borne coatings and water are mixed to form feed liquid with the mass ratio of 9:1 ~ 8:2, the viscosity of described feed liquid at 20 ~ 25 DEG C is that 110 ~ 120KU (adopts the method in GB/T9269-2009 to test, but probe temperature is 20 ~ 25 DEG C), the pH value of described feed liquid at 20 ~ 25 DEG C is 8.4 ~ 8.7.Water-borne coatings of the present invention, its in a situation of use, considerable change can not be there is with temperature and the change being watered ratio in viscosity and pH value.
Present invention also offers a kind of preparation method of above-mentioned water-borne coatings, it comprises the steps: the preparation method of the water-borne coatings by this area routine, each component in described composition of raw materials is mixed.
In the present invention, described preparation method preferably carries out in the steps below:
(1) by the water mixing described in described xanthan gum and 48.0 ~ 52.0%, solution A is dissolved to obtain; By the described wetting dispersing agent of 50.0 ~ 70.0%, the described carbomer of 30.0 ~ 50.0% and 30.0 ~ 50.0% described defoamer mix to obtain solution B with described solution A; By described solution B, described mineral dye, described filler and 21.0 ~ 35.0% described water mix under room temperature, and be dispersed to described mineral dye, described filler particle diameter below 45 μm, obtain slurry C;
(2) under whipped state, remaining described wetting dispersing agent, remaining carbomer, remaining described defoamer, described sterilant, described ACRYLIC EMULSION, described film coalescence aid, described frostproofer and remaining described water is added in described slurry C, mix;
Wherein, per-cent is the mass percent relative to each respective components quality.
In step (1), the method for described mixing and condition are method and the condition of this area routine.Described mixing preferably adopts the mode be uniformly mixed to carry out.Described step (1) is more preferably undertaken by following operation: be uniformly mixed with the rotating speed of 1000 ~ 1200rpm by the described water of described xanthan gum and 48.0 ~ 52.0%, dissolve to obtain solution A; By the described wetting dispersing agent of 50.0 ~ 70.0%, the described carbomer of 30.0 ~ 50.0% and 30.0 ~ 50.0% described defoamer and described solution A be uniformly mixed to obtain solution B with the rotating speed of 600 ~ 800rpm; By described solution B, described mineral dye, described filler and 21.0 ~ 35.0% the rotating speed of described water with 1200 ~ 1500rpm under room temperature be uniformly mixed, and be dispersed to described mineral dye, described packing material size below 45 μm, obtain slurry C; Wherein, per-cent is the mass percent relative to each respective components quality.
In step (2), the condition of described stirring is the condition of this area routine.The rotating speed of described stirring is preferably 600 ~ 800rpm.
In the present invention, described room temperature is the usual definition of this area, refers generally to 5 ~ 40 DEG C.
On the basis meeting this area general knowledge, above-mentioned each optimum condition, can arbitrary combination, obtains the preferred embodiments of the invention.
Agents useful for same of the present invention and raw material are all commercially.
Positive progressive effect of the present invention is:
1, water-borne coatings of the present invention has good suspension, emulsifying property, dispersiveness.Production technique is simple, and production process eliminates the restriction of technical requirements in the water-borne coatings course of processing, if do not needed the requirement of strict water temperature, does not need grinding plant, reduces energy consumption in production process, does not need the pH value controlling product, the waste water of generation and easily processing.
2, water-borne coatings of the present invention has stronger pseudo-plasticity, has high viscosity, show as viscosity and sharply decline, but molecular structure is constant under high shear forces under static or low shearing action.And when shearing force is eliminated, then recover original viscosity immediately, the relation of its shearing force and viscosity is completely plastic.
3, water-borne coatings of the present invention has the stability of heat, its viscosity can not variation with temperature and changing a lot, do not have strict temperature limits to storage, between 10 ~ 80 DEG C, viscosity has almost no change, and makes it all can construct in wide temperature range.
4, water-borne coatings of the present invention is met acid-alkali medium and is had very stability, is that between 5 ~ 10, its viscosity is unaffected at pH, pH be less than 4 and be greater than 11 time viscosity have slight change.At pH in the scope of 3 ~ 11, viscosity maxima and minimum value difference, less than 10%, based on this characteristic, do not have strict acid-alkali treatment requirement to construction substrate.
5, water-borne coatings of the present invention has stability to salt, and miscible with many salts solutions (sylvite, sodium salt, calcium salt, magnesium salts etc.), viscosity is unaffected.Under higher salt concentrations condition, precipitation and flocculation do not occur, and its viscosity is influenced hardly, is widely used in coastal cities.
6, water-borne coatings of the present invention has stability to enzyme digestion reaction, has extremely strong anti-oxidant and resistance to enzymolysis ability, and many enzymes such as enzymes such as proteolytic enzyme, amylase, cellulase and hemicellulase all can not make it degrade.
7, water-borne coatings of the present invention is applicable to brushing, roller coating, spraying, criticizes and scrape, and does not all have strict specialty or skill requirement, be not strict with construction environment workmen, meets the individual character construction demand of DIY.Water-borne coatings of the present invention is applicable to require that package stability requirement is high, and the construction time limit is short and require that maintenance cost is low, the place of execution conditions rather harsh.
8, water-borne coatings of the present invention is containing the material to human body and bad environmental such as the organic solvent such as benzene,toluene,xylene and ethylbenzene and free vulcabond, volatile organic compounds (being called for short VOC) far below National Standards Technical requirement, and does not have strict fire protection requirement to production, transport, storage.
9, the paint film that water-borne coatings of the present invention is obtained, have the performance surmounting its water-borne coatings national standard, alkali resistance, abrasion resistance and contamination resistance are all very excellent, are not only applicable to interior wall application, and are applicable to exterior wall application, are the universal coating of inner-outer wall.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.The experimental technique of unreceipted actual conditions in the following example, conventionally and condition, or selects according to catalogue.
In following embodiment and comparative example, rule of origin used is as follows:
SD-168 emulsion (ACRYLIC EMULSION): Nantong Shengda Chemical Co., Ltd. produces;
BLJ-998AD emulsion (ACRYLIC EMULSION): Shanghai Bao Lijia Chemical Co., Ltd. produces;
AC-261P emulsion (ACRYLIC EMULSION): ROHM AND HAAS is produced;
Xanthan gum: Shandong Zhong Xuan limited-liability company produces, Kang Wei bio tech ltd, Henan produces or Shanghai Li Qi auxiliary chemicals company limited produces; Viscosity≤the 100000mPas of the 1wt% aqueous solution 23 DEG C time (testing method: 23 ± 0.5 DEG C use the test of GradeH viscometer) of those xanthan gum;
Rutile titanium white R828: Ke Meiji pigment company limited of the U.S.;
Carbon black M1300: Cabot Co., Ltd of the U.S.
Iron oxide yellow: Shanghai Yipin Pigments Co., Ltd. produces;
Water-ground limestone AT-0026: Jiangxi Ao Te fine powder company limited produces;
Water-ground limestone AT-0028: Jiangxi Ao Te fine powder company limited produces;
Calcined kaolin DB-1: China Kaolin Clay Co., Ltd. produces;
Calcined kaolin DB-2: China Kaolin Clay Co., Ltd. produces;
Calcined kaolin BMV60: Guangdong Bang Le industrial chemicals company limited produces;
Sericite in powder GA-4: Chuzhou Ge Rui mining industry company limited produces;
Wetting dispersing agent WA200Rhodia:Rhodia group produces;
Wetting dispersing agent CF-10: DOW Chemical company limited produces;
Wetting dispersing agent X-405: DOW Chemical company limited produces;
Sterilant MIRECIDE-KW/600: the sterilant that LAMIRSA Experimental Study College of Spain produces;
Defoamer RH-900: Guangzhou Rui He novel material Science and Technology Ltd. produces;
Defoamer BD-405 and BD-109: DOW Chemical company limited produces;
Carbomer 934: Langfang Ju Tong Chemical Co., Ltd. produces;
Acritamer 940: Langfang Ju Tong Chemical Co., Ltd. produces;
Carbopol 941: Langfang Ju Tong Chemical Co., Ltd. produces;
Film coalescence aid Texanol: Eastman Chemical Company (EASTMAN) produces;
Water-borne coatings H1000: Huili Coating Co., Ltd., Shanghai produces;
Water-borne coatings BC-200: Hanzhou Guanghui Chemical Co., Ltd. produces.
Embodiment 1
The composition of raw materials (wt%) of the water-borne coatings of embodiment 1 is as following table 1.
Table 1
The preparation method of this water-borne coatings comprises the steps:
(1) stirred under the rotating speed of 1200rpm by the deionized water of xanthan gum solution and 48.0wt%, mixed dissolution obtains solution A; The defoamer of the wetting dispersing agent of 50.0wt%, the carbomer of 50.0wt% and 30.0wt% and solution A are stirred with the rotating speed of 800rpm, mixes to obtain solution B; The deionized water of solution B, mineral dye, filler and 35.0wt% is stirred with the rotating speed of 1500rpm under room temperature, mixes, and be dispersed to mineral dye, mineral filler particle diameter below 45 μm, obtain slurry C;
(2) under the mixing speed of 600rpm, in slurry C, add remaining wetting dispersing agent, remaining carbomer, remaining defoamer, sterilant, ACRYLIC EMULSION, film coalescence aid, frostproofer and remaining deionized water, mix;
Wherein, per-cent is the weight percent relative to each respective components weight.
Embodiment 2
The composition of raw materials (wt%) of the water-borne coatings of embodiment 2 is as following table 2.
Table 2
The preparation method of this water-borne coatings comprises the steps:
(1) stirred under the rotating speed of 1100rpm by the deionized water of xanthan gum and 50.0wt%, mixed dissolution obtains solution A; The defoamer of the wetting dispersing agent of 60.0wt%, the carbomer of 50.0wt% and 30.0wt% and solution A are stirred with the rotating speed of 700rpm, mixes to obtain solution B; The deionized water of solution B, mineral dye, filler and 28.0wt% is stirred with the rotating speed of 1400rpm under room temperature, mixes, and be dispersed to mineral dye, filler particle diameter below 45 μm, obtain slurry C;
(2) under the mixing speed of 700rpm, in slurry C, add remaining wetting dispersing agent, remaining carbomer, remaining defoamer, sterilant, ACRYLIC EMULSION, film coalescence aid, frostproofer and remaining deionized water, mix;
Wherein, per-cent is the weight percent relative to each respective components weight.
Embodiment 3
The composition of raw materials (wt%) of the water-borne coatings of embodiment 3 is as following table 3.
Table 3
The preparation method of this water-borne coatings comprises the steps:
(1) stirred under the rotating speed of 1000rpm by the deionized water of xanthan gum and 52.0wt%, mixed dissolution obtains solution A; The defoamer of the wetting dispersing agent of 50.0wt%, the carbomer of 30.0wt% and 50.0wt% and solution A are stirred with the rotating speed of 600rpm, mixes to obtain solution B; The deionized water of solution B, mineral dye, filler and 28.0wt% is stirred with the rotating speed of 1200rpm under room temperature, mixes, and be dispersed to mineral dye, filler particle diameter below 45 μm, obtain slurry C;
(2) under the mixing speed of 800rpm, in slurry C, add remaining wetting dispersing agent, remaining carbomer, remaining defoamer, sterilant, ACRYLIC EMULSION, film coalescence aid, frostproofer and remaining deionized water, mix;
Wherein, per-cent is the weight percent relative to each respective components weight.
Comparative example 1
The composition of raw materials (wt%) of water-borne coatings is as following table 4.
Table 4
The preparation method of this water-borne coatings is as follows:
(1) by the deionized water of xanthan gum and 25.0wt% to stir under the rotating speed of 1100rpm, mixed dissolution obtains solution A; The defoamer of the wetting dispersing agent of 60.0wt%, the carbomer of 50.0wt% and 30.0wt% and solution A are stirred with the rotating speed of 700rpm, mixes to obtain solution B; Stir mixed under room temperature for the deionized water of solution B, mineral dye, filler and 40wt% with the rotating speed of 1400rpm, mix, and be dispersed to mineral dye, filler particle diameter below 45 μm, obtain slurry C;
(2) under the mixing speed of 700rpm, in slurry C, add remaining wetting dispersing agent, remaining carbomer, remaining defoamer, sterilant, ACRYLIC EMULSION, film coalescence aid, frostproofer and remaining deionized water, mix;
Wherein, per-cent is the weight percent relative to each respective components weight.
Effect example
The water-borne coatings of the water-borne coatings of embodiment 1 ~ 3, commercially available water-borne coatings H1000, water-borne coatings BC-200 and comparative example 1 is carried out to every experiment of performance and environmental protection index, concrete outcome is in table 5 and table 6.
The each product performance index of table 5
Table 6 environmental protection index
As seen from Table 5, the stable performance of water-borne coatings of the present invention, long time without deposit phenomenon, its use properties is good, time of drying is fast, alkali resistance, brushing resistance, contamination resistance and temperature-change resistance are good, and artificial weathering ageing resistance is good, and are better than commercially available water-borne coatings H1000, water-borne coatings BC-200 and the obtained water-borne coatings of comparative example 1.In addition, finding in the detection of the water-borne coatings of embodiment 1 ~ 3, is that under the test condition of 5 ~ 10, the viscosity of each water-borne coatings is unaffected at pH, pH be less than 4 and be greater than 11 time viscosity have slight change.At pH in the scope of 3 ~ 11, viscosity maxima and minimum value difference are less than 10%.Based on this, water-borne coatings of the present invention, when constructing, does not have strict acid-alkali treatment requirement to construction substrate.
As seen from Table 6, the VOC content of water-borne coatings of the present invention is far below the water-borne coatings of routine, and do not detect free formaldehyde, benzene, toluene and heavy metal substance, be a kind of environment-friendly type aqueous coating meeting current generation demand, its indices is all better than commercially available water-borne coatings H1000, water-borne coatings BC-200 and the obtained water-borne coatings of comparative example 1.
To the water-borne coatings of the water-borne coatings of embodiment 1 ~ 3, commercially available water-borne coatings H1000, water-borne coatings BC-200 and comparative example 1 different use temperature and carry out under being watered ratio viscosity, pH value change and can constructional method test, it the results are shown in Table 7.Wherein, storage viscosity is tested according to the method in GB/T9269-2009, but temperature during test is actual temperature.Wherein, working viscosity is tested according to the method in GB/T9269-2009, but temperature during test is actual temperature, and during test, rotating speed is 400r/min.
The viscosity of table 7 water-borne coatings, pH value, can the test result of workability
As seen from Table 7, commercially available water-borne coatings H1000, water-borne coatings BC-200 and comparative example 1 are along with use temperature, the change being watered ratio and the change of viscosity and pH value occurs, after causing condition to change, identical product can not implement brushing, roller coating, spraying, knife-coat application mode simultaneously, can not meet the individual character construction demand of DIY.
The viscosity of water-borne coatings of the present invention with being watered ratio, use temperature has almost no change, and the modes such as brushing, roller coating, spraying, blade coating all can be adopted to construct, and pH value not be watered ratio, temperature change and change, the individual character construction demand of DIY can be met, overcome the limitation of commercially available water-borne coatings to application property condition (as the viscosity of product, storage period, shear viscosity, pH value and workmen, construction environment).