CN102993887A - Elastic texture paint and preparation method thereof - Google Patents
Elastic texture paint and preparation method thereof Download PDFInfo
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- CN102993887A CN102993887A CN2012105757733A CN201210575773A CN102993887A CN 102993887 A CN102993887 A CN 102993887A CN 2012105757733 A CN2012105757733 A CN 2012105757733A CN 201210575773 A CN201210575773 A CN 201210575773A CN 102993887 A CN102993887 A CN 102993887A
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Abstract
The invention discloses elastic texture paint. The elastic texture paint comprises the following components: water, anti-mildew algaecide, preservative, dispersing agent, wetting agent, defoaming agent, 600-mesh calcium powder, titanium dioxide, aluminum-magnesium silicate, sepiolite velvet, silica powder, the first emulsion, the second emulsion, 16-30-mesh stone grain, 30-60-mesh stone grain, 60-80-mesh stone grain, the first solvent, the second solvent, cellulose and thickener. The elastic texture paint has the following excellent performances: multiple natural decoration effects, excellent flexibility, impact resistance, water resistance and air permeability and a good sound adsorption effect, and has the characteristics of simplicity in construction, capacity of creating decoration effects of strong texture and different styles by different construction methods, small bridging cracks, abundant expression forms and colors, and environmental protection, which cannot be realized by maishi paint or flat painting, can be extensively applied to all new buildings including exterior wall decoration projects of the public buildings and residential buildings, and has an extensive market prospect.
Description
[technical field]
The present invention relates to paint field, be specifically related to that a kind of snappiness is splendid, shock resistance, waterproof and breathable, flexible texture coating of good sound-absorbing effect and preparation method thereof arranged.
[background technology]
Texture coating originates from the beginning of the '20s in last century, and world structure is at that time just transferring to from war greatly develops science and technology, and also to improve people's living standard as fundamental state policy, construction industry also is like this in various countries.Various new construction styles occur thereupon in a large number; Stucco(plaster) be exactly to occur at the north America region in this period, it was the architectural style that comes from the Mediterranean Sea formula originally, adopted in a large number natural silt particle and stone material to do decoration of exterior wall and the substitute that occurs.
Owing to a large amount of appearance of cement products, the someone had found out the way of utilizing cement and sand to add toner, to replace those expensive original timbers at that time.Yet, the cob wall that its rural silt in effect extraordinary image Europe is smeared, therefore named " colored cement mortar " has another name called Stucco, and comes into vogue.That age is less demanding to quality, neither be very strict for the coating requirement of mortar type; Its shortcoming is not more and more accepted by people yet, so decorative plaster is not used gradually but As time goes on.Until the seventies, the problem of environmental protection is paid attention to by the people gradually, and Stucco is employed again, but cement has become ameliorative cement, and this has improved its superiority greatly.Enter the eighties, people are more and more higher to the requirement of product, and cement characteristic easy to crack can't solve all the time.At this moment arise with the sand wall slurry coating material of synthetic emulsion as binding agent, it is not only attractive in appearance charm, and has good protectiveness, and other performance of product also improves greatly.After the nineties, the application of the sandy paint of pulpous state is very universal, North America market particularly, and the share of market of pulpous state texture coating surpasses 50% in the exterior coating.
In the middle and later periods nineties, outer wall building coating begins progressively to rise, and comprises the true mineral varnish that belongs to sandy paint, also comes into vogue at this moment.But because the restriction of at that time whole trade management level and construction, fading and problem, the most serious of all problem of Cracking such as peel off in various degree all appearred in early stage flat paint and true mineral varnish.Flat paint can't solve the problem of wall crazing because construction thickness can't be controlled effectively at all in construction process.Until the end of the nineties, after housing industry formally became national leading industry, domestic active demand is a kind of can effectively to prevent wall crazing, and abundant expression forms, environment friendly and pollution-free wall body decoration product; Simultaneously, for standard market, build the Ministry of worker and revised " synthetic resin emulsion sandy paint " in spy in 2000, and in formal enforcement on December 1st, 2000.
For water-based elastic paint, most research staff only rests on the screening study aspect to elastic aqueous emulsion, namely the kind (organosilicon crylic acid latex, pure-acrylic emulsion, benzene emulsion) of elastic aqueous emulsion is carried out elasticity performance test (as: unit elongation, cohesive strength, anti-stain characteristic can etc. or one species different manufacturers emulsion carried out orthogonal test), filter out better elastic aqueous emulsion, and the research of other material in the coating is thinked little of or be placed on back burner.Flexible texture coating has the general character of general elastic coating as one of water-based elastic paint important branch, and its special aspect is also arranged.
Common characteristic is that texture coating and general elastic coating all are to adopt water, elastic emulsion particle, color stuffing and other aqueous promoter evenly to mix, on coating behind the wall along with the moisture evaporation in the coating, elastic emulsion particulate and color stuffing particle be tightly packed being in the same place slowly.Along with the moisture evaporation of coating is complete, the elastic emulsion particulate is attracted each other and is merged each other, and the color stuffing particle is wrapped up, and forms continuous paint film.Texture coating all has identical membrane formation mechanism with elastic coating.
Texture coating has difference with common elastic coating again, and the color stuffing proportion in the flexible texture coating is very large, the color stuffing proportion of most texture coating be 60% or more than.The ratio that color stuffing accounts for coating in the part texture coating prescription weighs 70%.The proportion of the general shared coating of elastic coating color stuffing is generally 20-30%, at most also can not surpass 40%.Therefore color stuffing reasonably combined very large to the elasticity effect that shows after the coating film forming in texture coating.
Secondly, texture coating represents unique visual angle, space with the individual character collocation of its with countless changes three-dimensional texture, more options, and is abundant and lively, makes us fresh and new.And create to satisfy the Integral decoration style with individual character, so that texture coating shows the individual style of oneself in decoration! This Novel artistic coating has been brought the smooth type epoch of wall body coating in brand-new epoch of the concavo-convex coating of natural environmental-protective type.In order to create the three-dimensional texture, a large amount of larger fillers of particle that use in the texture coating.Texture coating and general elastic coating difference just are that texture coating filler large or fine granule is seriously unbalanced.Therefore show the collocation that good elasticity must take into full account the thickness filler after texture coating is thought of as film; mutually piling up formation by thickness filler in the filler arranges more closely; along with the moisture evaporation of coating is complete; the elastic emulsion particulate is attracted each other and is merged each other; the color stuffing particle is wrapped up, form continuous, resilient paint film.Reasonably the thickness filler can form closely consistent arrangement, the masterpiece time spent can be because of local filler disappearance occurring or because have the space between the thickness continuous paint film being produced local defective outside for paint film, inhomogeneous paint film causes the part paint film at first to break during stress outside, has a strong impact on the various functions of attractive in appearance and coating self of coating.The paint film that tight filler forms has equilibrium elasticity can evenly be resisted external force and cover fine cracks.
In sum, how in the high situation of color stuffing, keep having good elasticity and resistance to settling is the direction that the research staff makes great efforts.
Texture coating is in order to create the three-dimensional texture, and comparatively ideal constructional method is scraped for criticizing, and then utilizes various tool to create the moulding of various uniquenesses.Consider that constructional method is artificial batch and scrapes, so texture coating need to there be mud viscosity, workability and good open hour.The denseness of texture coating should be controlled in the construction zone of reasonableness, and the viscosity of texture coating can not be too high and have influence on workability.But the color stuffing proportion in the texture coating is very large, and the color stuffing proportion of most of texture coating is 70%-80%.And texture coating filler large or fine granule is seriously unbalanced.The filler of the particle that secondly particle diameter is large in the texture coating is more, and the self gravitation of individual particle is large.Large and the particle self gravitation of color stuffing proportion causes texture coating color stuffing sinking, the phenomenon of oily water separation to occur easily in storage.
There are a lot of uncertain factors in the stability of above-mentioned all situation explanation texture coatings, and texture coating being had make under the rational denseness in the texture coating heavy color stuffing can stable and uniform be distributed in the coating is the problem of a solution to be studied.
[summary of the invention]
The object of the invention is to the defective for the above prior art existence, provide a kind of and in texture coating, choose water-based emulsion in the texture coating by composite, select some functional fillers to create perfect graded stuffing, be uniformly mixed to form a kind of flexible texture coating that has by composite water-based emulsion, rational graded stuffing and various functional aid, make the paint film of flexible texture coating have certain elastic extension rate and tensile strength, can remedy the fine cracks that body of wall produces along with the migration of time, and keep lasting beautiful decorative effect.
Another object of the present invention provides a kind of preparation method of above-mentioned flexible texture coating.
To achieve these goals, the present invention has taked following technical scheme:
A kind of flexible texture coating, it comprises that following parts by weight component makes:
Water 5-10;
Mildew-resistant algaecide 0.1-0.3;
Sanitas 0.05-0.15;
Dispersion agent 0.1-0.3;
Wetting agent 0.05-0.15;
600 order dicalcium powder 6.5-11.5;
Titanium dioxide 4.0-10.0;
Neusilin 0.5-2.0;
Sepiolite cashmere 0.1-0.5;
Silicon powder 1.0-8.5;
The first emulsion 10-15;
The second emulsion 15-20;
16-30 order stone grain 18-22;
30-60 order stone grain 16-35;
60-80 order stone grain 8-15;
Defoamer 0.07-0.22;
The first solvent 0.5-1.5;
The second solvent 1.0-3.0;
Mierocrystalline cellulose 0.2-0.9;
Thickening material 0.2-3.6.
The present invention also comprises the pH-value debugging agent of 0.05-2.5 parts by weight.
Wherein, described mildew-resistant algaecide is selected 361 mould inhibitors that U.S. Rhom and Hass produces.
The LEX that described sanitas selects U.S. Rhom and Hass to produce.
Described dispersion agent is selected easily fast that U.S. Rhom and Hass produces.
The CO630 that described wetting agent selects French Rhodia to produce.
Described defoamer is the NXZ defoamer of Shenzhen Haichuan Chemical Technology Co., Ltd.
Described the first solvent is the propylene glycol that Dow Chemical company produces.
Described the second solvent is alcohol ester 12 film coalescence aid (2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate) that Abel's chemistry company produces.
Described Mierocrystalline cellulose is the methylhydroxypropylcellulose of Korea S's Samsung chemical company.
Described thickening material is the alkali swelling thickening material ASE-60 of U.S. Rhom and Hass.
The AMP-95 that Subsidiary Company's Angus (ANGUS) that described pH-value debugging agent is Dow Chemical company is produced.
Described the first emulsion is the ELASTENE2848NG emulsion that U.S. Rhom and Hass produces.
Described the second emulsion is the organosilicon crylic acid latex that rich (China) company limited of Ahmedabad produces.
Described titanium dioxide is the R-706 that du pont company is produced.
It is the PTIN-Z18 of the safe new high-tech material of Hunan friend company limited that described neusilin is selected.
The preferred 0.2-0.5mm of the staple length of described sepiolite cashmere.
Described 16-30 order stone grain, 30-60 order stone grain and 60-80 order stone grain are 16-30 order quartz sand, 30-60 order quartz sand and 60-80 order quartz sand
A kind of preparation method of flexible texture coating, it comprises the steps:
(1), defoamer, 600 order dicalcium powders, titanium dioxide, neusilin, silicon powder and the sepiolite cashmere of the water with above-mentioned parts by weight, mildew-resistant algaecide, sanitas, dispersion agent, wetting agent, defoamer total amount 1/3-1/2 add one by one the dispersion cylinder, and carry out high speed dispersion under the rotating speeds of 1000-1200RPM;
(2), above-mentioned parts by weight the first emulsion, the second emulsion, 16-30 order stone grain, 30-60 order stone grain and 60-80 order stone grain and remaining defoamer are joined in the mixed solution that above-mentioned (1) step prepares, and carry out middling speed at the rotating speed of 500-800RPM and stir;
(3), the first solvent with above-mentioned parts by weight, the second solvent, Mierocrystalline cellulose mix, and stirs and make Mierocrystalline cellulose Preblend, and be for subsequent use;
(4), raise speed to 1200rpm/min stirring in (2) step, add the Mierocrystalline cellulose Preblend that (3) step is made, make Mierocrystalline cellulose Preblend rapidly and be distributed to equably in the above-mentioned slurry and play thickening effectiveness;
(5), the thickening material of above-mentioned parts by weight and pH-value debugging agent are joined in the mixture that (4) step makes one by one, regulate pH value at 8.0-9.0, and under the rotating speed of 500-800RPM, carry out middling speed and stir, after toning is processed, pack and get final product.
Wherein, described the first emulsion and the second emulsion are used for improving the effect of flexible texture, and its preferred weight proportioning is 1:1.5, over-all properties of elasticity and contamination resistance and cohesive strength is better constantly for this, the elastic emulsion amount is large, and elasticity rises, and the contamination resistance cohesive strength descends to some extent.
Wherein, 16-30 order stone grain, 30-60 order stone grain, 60-80 order stone grain carry out grating by above-mentioned weight part, and filling up and the bridging effect of the stone grain by different-grain diameter can prevent hole and pin hole, improve coating result and force of cohesion.The quartz sand of the preferred above-mentioned order number of described stone grain.
Wherein, Mierocrystalline cellulose: thickening material=1:1(weight ratio), can play good thickening effectiveness; When amount of filler is higher, prevent filling settlement, it is higher to require to store viscosity, so middle low-shear viscosity can be provided, its thixotropy is large, the cellulose thickener that yield value is large, acrylic thickener can effectively be improved low-shear viscosity, make system have higher pseudo-plasticity, product is criticized to scrape and is not trickled, and both arrange in pairs or groups to use and can obtain excellent water conservation and delamination resistance energy.
Wherein, defoamer adds the 1/3-1/2 of total amount in (1) step, is used for pressing down bubble, and remaining to add Main Function in (2) step be froth breaking, and but such addition manner can reach good steep and defoaming effect.
In described (3) step, first with the first solvent and the second solvent, and then add Mierocrystalline cellulose; Can improve cellulosic swelling degree, solute effect is better after adding.Because propylene glycol is hydrophilic solubility promoter, Mierocrystalline cellulose is instant type, and the miscible situation that has excessive swelling and conglomeration can use product have conglomeration and colloid to produce after adding is produced separately, affects application property and the effect of product.Partially the solubility promoter of oiliness can be separately and the use of Mierocrystalline cellulose premix, and it can be effectively separating between cellulose particulates, and the ratio of 1:1 can mix, and the amount of the second solvent is more bigger better than cellulosic amount.
And because Mierocrystalline cellulose is the micro mist of lightweight very, in the situation that equipment rotates, add fashionable Mierocrystalline cellulose, can produce very large dust, Mierocrystalline cellulose behind the moisture absorption and the water can be hung and invest casing wall, owing in time do not stir and dissolving, bad colloid can occur dissolving affects the product effect significantly and construction, simultaneously also can cause composition to reduce, the unsettled phenomenon of viscosity is used the generation that can stop above-mentioned situation with the solubility promoter pre-mixing, is that nature is coated with the feed way from wound.
In above-mentioned prescription, can also add anti-graffiti resin, described anti-graffiti resin is selected the dimethyl polysiloxane resin, is used for solving the problem from decontamination, improves from detergency ability.The preferred Germany of anti-graffiti resin wins TEGO Protect5000 or the TEGO Protect5100 that the wound industrial group is produced.Addition is the 3-10 parts by weight, and it is with interpolations such as the first emulsions.
Compared with prior art, flexible texture coating of the present invention has following excellent properties: it is composite to select the non-resilient emulsion of organic-silicon-modified pure acrylic acid and elastic pure acrylic latex to carry out, and carries out snappiness and shock resistance that grating increases texture coating by selecting natural quartz sand; The adding of sepiolite cashmere enters the flexility of step raising texture coating system again; Prevented that effectively coating from the phenomenon of building stones sedimentation occuring within storage period, also efficiently solved the contradiction between grain effect, fixed effect and the application property of texture coating artistic design; Such paint film can remedy the tiny crackle of exterior wall basal plane or because the fine cracks that causes is shaken in basic unit, also can produce by different service tools and constructional method the decorative effect of various solids.
Flexible texture coating of the present invention is the filler by meticulous level, outer wall thick slurry type coating in elasticity acrylic acid tackiness agent and other auxiliary agent form, the multiple Natural decoration effect of tool.Snappiness is splendid, shock resistance, waterproof and breathable, good sound-absorbing effect is arranged.Construction is simple, follow one's bent, can build by different construction gimmicks that texture is strong, the decorative effect of different style, and have bridging micro-cracks, manifestation and rich color, and the characteristic of environmental protection, this is true mineral varnish or flat be coated with and can not than U.S., can be widely used in all new buildings, comprise the decoration of exterior wall engineering of public building and residential housing, market outlook are wide.
[description of drawings]
Fig. 1 is preparation technology's schema of flexible texture coating.
[embodiment]
The present invention will be described in detail below in conjunction with specific embodiment, but the present invention is not only limited to these embodiment.
Embodiment 1
A kind of flexible texture coating, it comprises that following parts by weight component makes:
Water 6;
Mildew-resistant algaecide 0.1;
Sanitas 0.06;
Dispersion agent 0.1;
Wetting agent 0.06;
600 order dicalcium powders 7;
Titanium dioxide 5;
Neusilin 0.6;
Sepiolite cashmere 0.2;
Silicon powder 2.0;
The first emulsion 11;
The second emulsion 16;
16-30 order stone grain 18;
30-60 order stone grain 17;
60-80 order stone grain 9;
Defoamer 0.08;
The first solvent 0.6;
The second solvent 1.5;
Mierocrystalline cellulose 0.3;
Thickening material 0.3;
PH-value debugging agent 0.06.
Embodiment 2
A kind of flexible texture coating, it comprises that following parts by weight component makes:
Water 9;
Mildew-resistant algaecide 0.3;
Sanitas 0.14;
Dispersion agent 0.3;
Wetting agent 0.14;
600 order dicalcium powders 11.0;
Titanium dioxide 9.0;
Neusilin 2.0;
Sepiolite cashmere 0.4;
Silicon powder 8.0;
The first emulsion 14;
The second emulsion 19;
16-30 order stone grain 21;
30-60 order stone grain 34;
60-80 order stone grain 14;
Defoamer 0.21;
The first solvent 1.4;
The second solvent 3.0;
Mierocrystalline cellulose 0.8;
Thickening material 3.4;
PH-value debugging agent 2.4.
Embodiment 3
A kind of flexible texture coating, it comprises that following parts by weight component makes:
Water 5-10;
Mildew-resistant algaecide 0.1-0.3;
Sanitas 0.05-0.15;
Dispersion agent 0.1-0.3;
Wetting agent 0.05-0.15;
600 order dicalcium powder 6.5-11.5;
Titanium dioxide 4.0-10.0;
Neusilin 0.5-2.0;
Sepiolite cashmere 0.1-0.5;
Silicon powder 1.0-8.5;
The first emulsion 10-15;
The second emulsion 15-20;
16-30 order stone grain 18-22;
30-60 order stone grain 16-35;
60-80 order stone grain 8-15;
Defoamer 0.10-0.18;
The first solvent 0.5-1.5;
The second solvent 1.0-3.0;
Mierocrystalline cellulose 0.2-0.9;
Thickening material 0.2-3.6;
PH-value debugging agent 0.05-2.5.
The preparation method of above-mentioned flexible texture coating, as shown in Figure 1, it comprises the steps:
(1), defoamer, 600 order dicalcium powders, titanium dioxide and neusilin, silicon powder, the sepiolite cashmere of the water with above-mentioned parts by weight, mildew-resistant algaecide, sanitas, dispersion agent, wetting agent, defoamer total amount 1/3-1/2 add one by one, and carry out high speed dispersion under the rotating speeds of 1000-1200RPM;
(2), above-mentioned parts by weight the first emulsion, the second emulsion, 16-30 order stone grain, 30-60 order stone grain and 60-80 order stone grain and remaining defoamer are joined in the mixed solution that above-mentioned (1) step prepares, and carry out middling speed at the rotating speed of 500-800RPM and stir;
(3), the first solvent with above-mentioned parts by weight, the second solvent, Mierocrystalline cellulose mix, and stirs and make Mierocrystalline cellulose Preblend, and be for subsequent use;
(4), raise speed to 1200rpm/min stirring in (2) step, add the Mierocrystalline cellulose Preblend that (3) step is made, make Mierocrystalline cellulose Preblend rapidly and be distributed to equably in the above-mentioned slurry and play thickening effectiveness;
(5), the thickening material of above-mentioned parts by weight and pH-value debugging agent are joined in the mixture that (4) step makes one by one, regulate pH value at 8.0-9.0, and under the rotating speed of 500-800RPM, carry out middling speed and stir, after toning is processed, pack and get final product.
Wherein, described the first emulsion and the second emulsion are used for improving the effect of flexible texture, and its preferred weight proportioning is 1:1.5, this moment, the over-all properties of elasticity and contamination resistance and cohesive strength was better, the elastic emulsion amount is large, and elasticity rises, contamination resistance cohesive strength descend to some extent.Wherein, 16-30 order stone grain, 30-60 order stone grain, 60-80 order stone grain carry out grating by above-mentioned weight part, and filling up and the bridging effect of the stone grain by different-grain diameter can prevent hole and pin hole, improve coating result and force of cohesion.Wherein, Mierocrystalline cellulose: thickening material=1:1(weight ratio), can play good thickening effectiveness; When amount of filler is higher, prevent filling settlement, it is higher to require to store viscosity, so middle low-shear viscosity can be provided, its thixotropy is large, the cellulose thickener that yield value is large, acrylic thickener can effectively be improved low-shear viscosity, make system have higher pseudo-plasticity, product is criticized to scrape and is not trickled, and both arrange in pairs or groups to use and can obtain excellent water conservation and delamination resistance energy.Wherein, defoamer adds the 1/3-1/2 of total amount in (1) step, is used for pressing down bubble, and remaining to add Main Function in (2) step be froth breaking, and but such addition manner can reach good steep and defoaming effect.In described (3) step, first with the first solvent and the second solvent, then adding Mierocrystalline cellulose; Can improve cellulosic swelling degree, solute effect is better after adding.Because propylene glycol is hydrophilic solubility promoter, Mierocrystalline cellulose is instant type, and the miscible situation that has excessive swelling and conglomeration can use product have conglomeration and colloid to produce after adding is produced separately, affects application property and the effect of product.The solubility promoter of oiliness can use with two Mierocrystalline cellulose premixs separately partially, and it can be effectively separating between cellulose particulates, and the ratio of 1:1 can mix, and the amount of the second solvent is bigger better than cellulosic amount.
Wherein, described mildew-resistant algaecide is selected 361 mould inhibitors that U.S. Rhom and Hass produces.The LEX that described sanitas selects U.S. Rhom and Hass to produce.Described dispersion agent is selected easily fast that U.S. Rhom and Hass produces.The CO630 that described wetting agent selects French Rhodia to produce.Described defoamer is the NXZ defoamer of Shenzhen Haichuan Chemical Technology Co., Ltd.Described the first solvent is the DOW propylene glycol.Described the second solvent is Abelian alcohol ester 12 film coalescence aid.Described Mierocrystalline cellulose is the methylhydroxypropylcellulose of Korea S's Samsung.Described thickening material is the alkali swelling thickening material of ROHM AND HAAS.Described pH-value debugging agent is the AMP-95 of Angus.Described the first emulsion is ROHM AND HAAS ELASTENE2848NG emulsion.Described the second emulsion is the organosilicon crylic acid latex of rich (China) company limited of Ahmedabad.Described titanium dioxide is the R-706 of du pont company.It is the PTIN-Z18 of Hunan Peng Tai company that described neusilin is selected.The staple length of described sepiolite cashmere is selected the length of 0.2-0.5mm, and such effect is best.
The present invention adopts the non-resilient emulsion of organic-silicon-modified pure acrylic acid and elastic pure acrylic latex to carry out compounded technology, the non-resilient emulsion of organic-silicon-modified pure acrylic acid is because organosilyl surface energy hangs down at the more general pure acrylic latex of the continuous coating surface of formation more hydrophilic, add that organosilyl surface energy is lower, rainwater is easy to wetting and simultaneously the contamination that adheres to and be attached on the paint film is washed away together, keeps the cleaning of paint film.The tensile strength that elastic pure acrylic latex provides low temperature elasticity in the elastic coating and the non-resilient emulsion of organic-silicon-modified pure acrylic acid to provide combines and can produce balanced cohesive strength and snappiness, has good snappiness when making paint film have certain hardness.
Adopt natural quartz sand as the filler of texture coating, by the collocation of test adjustment filler, the filler that draws collocation is the optimum gradation filler.And with the composite situation of the collocation of rational emulsion and mass parts under have shock resistance and the snappiness of the best.
Select especially sepiolite cashmere, neusilin and silicon powder.Sepiolite cashmere provides satin luster for coating and utilizes suede length to bear the bridging effect of part in the flexible texture coating, improves the snappiness of system.The texture coating of silicon powder paint film when film forming is finer and close, and fine and close paint film is improved effect to shock resistance.Neusilin and Mierocrystalline cellulose and associative thickener collocation are used, and for coating system provides a highly stable shelf characteric, prevent that coating from the phenomenon of skeletal grain sedimentation occuring within storage period.During the utilization in texture coating of sepiolite cashmere, neusilin and silicon powder the properties of flexible texture coating is all increased, for the application of filler in texture coating provides useful reference.
Because texture coating is the coating of high solids content, solid content reaches more than 75%; And only have the moisture content of minute quantity in this prescription, be not enough to the Mierocrystalline cellulose in the uniform dissolution prescription.So, the applicant invents above production technique, adopting the first solvent and the second solvent to carry out moistening to Mierocrystalline cellulose, so that the material in the cylinder adds the Preblendes such as above-mentioned Mierocrystalline cellulose under high speed dispersion, the state that seethes, make it in 3-5 minute, can evenly spread in the cylinder in the middle of the material, play equably thickening effectiveness.
Performance Detection
Detection method is with reference to GB/T17671 " Test method for strength of hydraulic cement mortar " and GBT1748 " putty membrane snappiness assay method ").
1. cohesive strength and snappiness are outstanding
The latex particle that elasticity in the texture coating is mainly water-based provides, the present invention selects the non-resilient emulsion of organic-silicon-modified pure acrylic acid and elastic pure acrylic latex to carry out composite, the non-resilient emulsion of organosilicon-modified acrylic mainly provides the tensile strength in the paint film, because elastic emulsion is because second-order transition temperature is lower, the paint film that forms in the normal temperature situation is soft and have viscosity, and the cohesive strength of paint film is relatively poor.The non-resilient emulsion of organic-silicon-modified pure acrylic acid and elastic pure acrylic latex carry out composite, the tensile strength that organosilicon-acrylic resin emulsion provides and elastic pure acrylic latex provide good unit elongation to combine, and make paint film have balanced cohesive strength and snappiness.
Sepiolite cashmere is a kind of rich-magnesium clay mineral of chain-like structure, is compact mass, fibrous.After the processing of bursting at the seams, become sepiolite cashmere by the sepiolite raw ore.After deliberation, only having staple length is that the sepiolite cashmere of 0.2-0.5mm just is suitable for body series.The sepiolite cashmere sense of touch is smooth, quality is light, plasticity-is strong, while also has larger specific surface area, shrinking percentage is low, not easy to crack and have satin luster, sepiolite cashmere provides satin luster for coating and utilizes suede length to bear the bridging effect of part in flexible texture coating, thereby further improves the snappiness of coating.
2. good impact resistance
Therefore the shared proportion of filler is far longer than the ratio in the latex particle in texture coating, and filler composite also is the factor that snappiness and shock resistance to texture coating play a key in flexible texture coating.
It is that the stone grain is natural siliceous sand that the present invention adopts, texture coating big or small calcite and Snow Flower White building stones commonly used before disdaining.Quartz sand is a kind of silicate minerals of hard, wear-resisting, stable chemical performance, and its essential mineral composition is SiO
2, the color of quartz sand is oyster white or colourless translucent, hardness 7.
And common building stones structure is more loose, and hardness only is 2-3, and oil number is also bigger than normal, so in the texture coating of the filler of identical water-based emulsion content and identical grating, use the texture coating of natural siliceous sand to show more outstanding aspect elasticity and shock resistance.Simultaneously, the silicon powder that has a larger specific surface area is used in that (specific surface area of SILICA FUME reaches 20000m in the flexible texture coating
2/ kg), the space of filler aggregate and filler makes thick slurry more closely knit well, to reach the purpose that improves shock resistance.Because its specific surface area is large and coating is tight, also effectively reduce moisture content to the infiltration of coating in addition, improved the water tolerance of coating.
3. excellent resistance to settling and open hour
The STOL content coating that texture coating is comprised of the sand material of different-grain diameter and proportion, sand content generally reaches more than 60%, and sedimentation is the universal phenomenon of sandy paint.The present invention adopt neusilin be colloidal property preferably saponite, smectites through the natural two-dimensional nano-powder material of deep processing, suspension, anti-settling property, thixotropy and thickening power that sixteen trihedrons that base is unique and trioctahedron mixed structure can be given the system excellence.Effectively arrange in pairs or groups with Mierocrystalline cellulose and alkali swelling thickening material, both remedied the low deficiency of long-chain shape molecular structure class organic thickening agent thixotroping ability, simultaneously coating system is carried out thickening, make product system play mutually collaborative network structure effect, in texture coating not stratified, the not sedimentation within the maintenance phase that guarantees under the STOL content prerequisite; By experiment checking, above thickening combination can provide rubble grain balance support power effectively, prevented that effectively coating from the phenomenon of building stones sedimentation occuring within storage period, also efficiently solved the contradiction between grain effect, fixed effect and the application property of texture coating artistic design.Neusilin the open hour of greatly improving system, makes construction can have time enough to carry out effect moulding and finishing in the use of flexible texture coating system simultaneously.
Embodiment 4
A kind of flexible texture coating, it comprises that following component makes:
Water 10.15kg;
361 mildew-resistant algaecide 0.10kg;
LEX sanitas 0.15kg;
Fast easily dispersion agent 0.30kg;
CO630 wetting agent 0.10kg;
Wide Fujian material 600 order dicalcium powder 7.50kg;
The R-706 of Du Pont titanium dioxide 10.00kg;
Neusilin 0.50kg;
Silicon powder 1.00kg
ROHM AND HAAS 2848NG emulsion 10.00kg;
The rich 996AD emulsion of Ahmedabad 10.00kg;
16-30 order stone grain 20.00kg;
30-60 order stone grain 17.00kg;
60-80 order stone grain 10.00kg;
NYZ defoamer 0.25kg;
Propylene glycol 1.00kg;
Alcohol ester 12 1.00kg;
Mierocrystalline cellulose 40US 0.30kg;
TT-615 thickening material 0.50kg;
AMP-95 0.15kg。
The present embodiment flexible texture coating has following performance (detection method is with reference to GB/T17671 " Test method for strength of hydraulic cement mortar " and GBT1748 " putty membrane snappiness assay method "):
1. viscosity: 43000mpa.s;
2. hot storage stability: 55 ℃ of lower placements January, without caking, without sedimentation, breakdown of emulsion not;
3. initial dry cracking resistance: the individual beamlets crackle is arranged;
4. shock-resistance: the coating flawless, peel off and obviously distortion;
5. cohesive strength/MPa:0.89;
6.: snappiness: the 50mm flawless;
7. settleability: 12 moonset sedimentations.
Embodiment 5
A kind of flexible texture coating, it comprises that following component makes:
Water 9.00kg;
361 mildew-resistant algaecide 0.10kg;
LEX sanitas 0.15kg;
Fast easily dispersion agent 0.30kg;
CO630 wetting agent 0.10kg;
Wide Fujian material 600 order dicalcium powder 7.72kg;
The R-706 of Du Pont titanium dioxide 10.00kg;
Neusilin 2.00kg;
Sepiolite cashmere 0.30kg;
Silicon powder 1.50kg;
ROHM AND HAAS 2848NG emulsion 10.00kg;
The rich 996AD emulsion of Ahmedabad 13.00kg;
16-30 order stone grain 18.00kg;
30-60 order stone grain 16.00kg;
60-80 order stone grain 8.70kg;
NYZ defoamer 0.20kg;
Propylene glycol 1.00kg;
Alcohol ester 12 1.00kg;
Mierocrystalline cellulose 40US 0.30kg;
TT-615 thickening material 0.50kg;
AMP-95 0.13kg。
The flexible texture coating of present embodiment has following performance (detection method is with reference to GB/T17671 " Test method for strength of hydraulic cement mortar " and GBT1748 " putty membrane snappiness assay method "):
1. viscosity: 45000mpa.s
2. hot storage stability: 55 ℃ of lower placements January, without caking, without sedimentation, breakdown of emulsion not
3. initial dry cracking resistance: flawless
4. shock-resistance: the coating flawless, peel off and obviously distortion
5. cohesive strength/MPa:0.83
6. snappiness: 50mm flawless
7. settleability: 12 moonset sedimentations.
Embodiment 6
A kind of flexible texture coating, it comprises that following component makes:
Water 6.00kg;
361 mildew-resistant algaecide 0.10kg;
LEX sanitas 0.15kg;
Fast easily dispersion agent 0.25kg;
CO630 wetting agent 0.10kg;
Wide Fujian material 600 order dicalcium powder 5.50kg;
The R-706 of Du Pont titanium dioxide 10.00kg;
Neusilin 2.00kg;
Sepiolite cashmere 0.50kg;
Silicon powder 2.00kg
ROHM AND HAAS 2848NG emulsion 15.00kg;
The rich 996AD emulsion of Ahmedabad 13.00kg;
16-30 order stone grain 18.00kg;
30-60 order stone grain 16.00kg;
60-80 order stone grain 8.00kg;
NYZ defoamer 0.17kg;
Propylene glycol 1.20kg;
Alcohol ester 12 1.10kg;
Mierocrystalline cellulose 40US 0.30kg;
TT-615 thickening material 0.50kg;
AMP-95 0.13kg。
The flexible texture coating of present embodiment has following performance (detection method is with reference to GB/T17671 " Test method for strength of hydraulic cement mortar " and GBT1748 " putty membrane snappiness assay method " and JC/T2079-2011 " flexible texture coated material for building "):
1. viscosity: 49000mpa.s
2. hot storage stability: 55 ℃ of lower placements January, without caking, without sedimentation, breakdown of emulsion not
3. initial dry cracking resistance: flawless
4. shock-resistance: the coating flawless, peel off and obviously distortion
5. cohesive strength/MPa:0.81
6. snappiness: 50mm flawless
7. settleability: 12 moonset sedimentations.
Occur in the storage process that color stuffing sinks and the floating demixing phenomenon that the limpid or muddy liquid of one deck is arranged in surface, demixing phenomenon even can be that situation about firmly sinking to the bottom appears in color stuffing at container bottom.The test way: the plastic containers with 2 1L are respectively charged into coating to 2/3 height to be measured, in room temperature, deposit after the sealing, respectively 6 months with the situation of respectively getting the same bottle in 12 months and observing its layering, if any aqueous layering, then the copperplate with 50*10mm blocks the height that probes in the liquid and measure out the layering part approximately, calculate it and account for the total height ratio of coating in container, and with transferring ink knife to check whether the subsidence part valency has caking, cohesion etc.Depositing rear discovery such as certain sample has demixing phenomenon, and the high 10mm of layering liquid level, coating total height in container is 250mm, then its settleability=10/250*100%=4%.
Described person, it only is preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of namely generally doing according to the present patent application claim and invention description content changes and modifies, and all still belongs in the scope that patent of the present invention contains.
Claims (9)
1. a flexible texture coating is characterized in that, comprises that following parts by weight component makes:
Water 5-10;
Mildew-resistant algaecide 0.1-0.3;
Sanitas 0.05-0.15;
Dispersion agent 0.1-0.3;
Wetting agent 0.05-0.15;
600 order dicalcium powder 6.5-11.5;
Titanium dioxide 4.0-10.0;
Neusilin 0.5-2.0;
Sepiolite cashmere 0.1-0.5;
Silicon powder 1.0-8.5;
The first emulsion 10-15;
The second emulsion 15-20;
16-30 order stone grain 18-22;
30-60 order stone grain 16-35;
60-80 order stone grain 8-15;
Defoamer 0.07-0.22;
The first solvent 0.5-1.5;
The second solvent 1.0-3.0;
Mierocrystalline cellulose 0.2-0.9;
Thickening material 0.2-3.6.
2. a kind of flexible texture coating according to claim 1 is characterized in that, 361 mould inhibitors that described mildew-resistant algaecide selects U.S. Rhom and Hass to produce; The LEX that described sanitas selects U.S. Rhom and Hass to produce; Described dispersion agent is selected easily fast that U.S. Rhom and Hass produces; The CO630 that described wetting agent selects French Rhodia to produce.
3. a kind of flexible texture coating according to claim 1 is characterized in that, described the first solvent is propylene glycol; Described the second solvent alcohol ester 12 film coalescence aid.
4. a kind of flexible texture coating according to claim 1 is characterized in that, described Mierocrystalline cellulose is methylhydroxypropylcellulose; Described thickening material is alkali swelling thickening material.
5. a kind of flexible texture coating according to claim 1 is characterized in that, described the first emulsion is the ELASTENE2848NG emulsion that Rhom and Hass produces; Described the second emulsion is the organosilicon crylic acid latex of rich (China) company limited of Ahmedabad.
6. a kind of flexible texture coating according to claim 1 is characterized in that, described 16-30 order stone grain, 30-60 order stone grain and 60-80 order stone grain are 16-30 order quartz sand, 30-60 order quartz sand and 60-80 order quartz sand.
7. the preparation method of any described a kind of flexible texture coating is characterized in that according to claim 1-6, comprises the steps:
(1), defoamer, 600 order dicalcium powders, titanium dioxide and neusilin, silicon powder, the sepiolite cashmere of the water with above-mentioned parts by weight, mildew-resistant algaecide, sanitas, dispersion agent, wetting agent, defoamer total amount 1/3-1/2 add one by one, and carry out high speed dispersion under the rotating speeds of 1000-1200RPM;
(2), above-mentioned parts by weight the first emulsion, the second emulsion, 16-30 order stone grain, 30-60 order stone grain and 60-80 order stone grain and remaining defoamer are joined in the mixed solution that above-mentioned (1) step prepares, and carry out middling speed at the rotating speed of 500-800RPM and stir;
(3), the first solvent with above-mentioned parts by weight, the second solvent, Mierocrystalline cellulose mix, and stirs and make Mierocrystalline cellulose Preblend, and be for subsequent use;
(4), raise speed to 1200rpm/min stirring in (2) step, add the Mierocrystalline cellulose Preblend that (3) step is made, make Mierocrystalline cellulose Preblend rapidly and be distributed to equably in the above-mentioned slurry;
(5), the thickening material of above-mentioned parts by weight and pH-value debugging agent are joined in the mixture that (4) step makes one by one, regulate pH value at 8.0-9.0, and under the rotating speed of 500-800RPM, carry out the middling speed stirring.
8. the preparation method of a kind of flexible texture coating according to claim 7 is characterized in that, described the first emulsion and the second emulsion weight proportion are 1:1.5.
9. the preparation method of a kind of flexible texture coating according to claim 7 is characterized in that, Mierocrystalline cellulose: thickening material=1:1.
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