Building wall coating and preparation method thereofTechnical field
The present invention relates to technical field of coatings, in particular to a kind of building wall coating and preparation method thereof.
Background technique
With the quickening of urbanization process, human living standard is higher and higher, and environmental issue becomes public's growing interestMajor issue.Home decoration in daily life, people would generally select green, environmental protection, environment amenable material, these materialsPrice general charged is expensive, and practical most of decorative building materials used would generally be more or less in composition containing formaldehyde, such as dalleBinder.Formaldehyde is a kind of colourless gas with intense irritation smell, and harm to the human body is serious, easily causes all kinds of diseasesDisease, such as: alimentary canal, respiratory tract, skin, cancer, abnormal property.
For the substance containing harmful health in existing coating for wall surface in the related technology, and air can not be purified and removedWet problem, currently no effective solution has been proposed.
Summary of the invention
The purpose of the present invention is to provide a kind of building wall coating and preparation method thereof, to solve due to existing wallSubstance containing harmful health in coating, and the problem of air is with dehumidifying can not be purified.
To achieve the goals above, according to the one aspect of the application, a kind of building wall coating and its preparation are providedMethod.
Building wall coating according to the present invention, comprising:: calcium hydroxide weight be 15%~40%, aggregate weight 30%~70%, synthetic resin adhesive weight is 5%~10% and Semen Tritici aestivi fiber weight is 3%~10%, diatomite weight is20%~45%.
In some embodiments: including: that calcium hydroxide weight is 10%~35%, aggregate weight 20%~60%, synthesizesResin binder weight is 3%~7% and Semen Tritici aestivi fiber weight is 3%~10%, diatomite weight is 20%~45%.
In some embodiments: the synthetic resin adhesive includes: propylene-styrene system copolymer, vinyl acetateThe one or more synthetic polymers selected in the group of polymer and styrene/butadiene rubbers.
In some embodiments: the average particle diameter of the synthetic resin adhesive is 0.5 μm or more.
To achieve the goals above, according to further aspect of the application, a kind of preparation of building wall coating is providedMethod.
A kind of preparation method of building wall coating is added the following steps are included: step 1: diatomite crosses screening through ball millingInto ethyl alcohol, after ultrasonic disperse 2h-7h, the purified silicious earth A of removal organic impurities is obtained by filtration；Step 2: in a certain amount of waterMiddle addition A, warming-in-water are separately added into binder polyvinyl alcohol, thickener hydroxyethyl cellulose and surfactant sodium dodecylBase sodium sulphate and odium stearate, four account for respectively 15%-30%, 2%-5%, 5%-10% of diatomite mass ratio and5%-10% stirs to get mixed solution B；Step 3: sequentially adding organic titanium in the nitric acid of a certain amount of mass concentration 60%Acid esters and calcium nitrate, the two account for the 10%-20% and 5%-10% of diatomite quality respectively, are vigorously stirred, obtain solution C；TheFour steps: solution C is poured into solution B, is stood, and liquid alkaline solution adjusts solution ph to neutrality, obtains solution D, reaction is set in transferIn kettle, temperature control is stood；Step 5: wet cake is obtained by filtration in solution D, solid E is obtained through oven drying.
In some embodiments: when preparing mixed solution B, 50 DEG C -70 DEG C of water-bath temperature control, mixing time controls 4h-10h。
In some embodiments: when preparation solution C, mixing time controls 1h-3h.
In some embodiments: solution C and B mixing, time of repose control 10h-30h, and solution D in a kettle, is controlled100 DEG C -200 DEG C of temperature, time of repose control 2h-6h.
In some embodiments: when preparing solid E, oven drying temperature controls 110 DEG C -130 DEG C, and the time controls 10h-20h。
The present invention by the way of increasing new material, by calcium hydroxide weight be 15%~40%, aggregate weight 30%~70%, synthetic resin adhesive weight is 5%~10% and Semen Tritici aestivi fiber weight is 3%~10%, diatomite weight is20%~45%, achieve the purpose that cooperatively form coating material, to realize the technical effect of purification air and dehumidifying, in turnThe technical issues of solving the substance containing harmful health in existing coating for wall surface, and air and dehumidifying can not be purified.
Specific embodiment
It, below will be to the skill in the embodiment of the present application in order to make those skilled in the art more fully understand application schemeArt scheme is clearly and completely described, it is clear that and described embodiment is only the embodiment of the application a part, withoutIt is whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not before making creative workEvery other embodiment obtained is put, shall fall within the protection scope of the present application.
It should be noted that the term " first " of the description and claims of this application, " second " etc. are for areaNot similar object, without being used to describe a particular order or precedence order.It should be understood that the data used in this way are appropriateIn the case of can be interchanged, so as to embodiments herein described herein.In addition, term " includes " and " having " and theyAny deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, beingSystem, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed orFor the intrinsic other step or units of these process, methods, product or equipment.
Term " installation ", " setting ", " being equipped with ", " connection ", " connected ", " socket " shall be understood in a broad sense.For example, it may beIt is fixedly connected, is detachably connected or monolithic construction；It can be mechanical connection, or electrical connection；It can be directly connected, orBeing or is two connections internal between device, element or component indirectly connected through an intermediary.For abilityFor the those of ordinary skill of domain, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phaseMutually combination.
Illustrate technical solution of the invention combined with specific embodiments below, these embodiments should not be understood as to technologyThe limitation of scheme.
Embodiment 1:
Calcium hydroxide weight is 15%~40%, aggregate weight 30%~70%, synthetic resin adhesive weight be 5%~10% and Semen Tritici aestivi fiber weight is 3%~10%, diatomite weight is 20%~45%.
It is Semen Tritici aestivi fiber film used in the present invention, crack occurs when solidifying in order to prevent, can be applied to thick filmIn.In addition, Semen Tritici aestivi fiber, white lime, the fluoropolymer resin good with other blending compound compatibilities such as gather materials, in traditional fibre materialExpect the materials for wall as used in polyvinyl, glass fibre etc., after being mixed with other materials, such as working time and curing time,It does not need to meet the requirements for a long time.Semen Tritici aestivi fiber is mechanically pulverized using the present invention.The fiber can with but it is not soluble in water,The coat composed water of plaster of the invention combines hydroxy and hydrogen in fiber molecule, and the single fiber of the coating composition is keptIn capillary.Longer rich in lipophilic fiber in Semen Tritici aestivi fiber, hydrophily is shorter.Due to these characteristics, Semen Tritici aestivi fiber is pressedFormula, which is added when mediating material, to be dispersed, and the network of three-dimensional structure is formed, or thick coating occur when drying, to prevent blockage effect from causingCracking.Semen Tritici aestivi fiber, the preferably only insoluble diedairy fiber of wheat stalk and sectionalization commercially can be used as food originalMaterial.The Semen Tritici aestivi fiber thickness of fiber, fibre length are not particularly limited, and 10-40 μm of average fiber thickness, 15-30 μm of range,Further, when 15-500 μm of average fiber length, 20-300 μm is further preferably used.Average fiber thickness is small less than 10 μmWheat fiber, when average fiber length is less than 15 μm, the effect of anticracking when reducing dry.
Paint coating composition of the invention, the content of Semen Tritici aestivi fiber, solid content are 3%~10%.In addition, overlay film is thickerSemen Tritici aestivi fiber enable after, the problems such as percentage shared by Semen Tritici aestivi fiber is bigger, overlay film rough surface, just becomes very poor.SeparatelyOutside, the ratio of fiber is that wheat is too small, not sufficiently effective in terms of preventing cracking in maintenance and drying, when thick coating cannot be preventedOnly cracking or when peeling.
Ash slime paint used in the present composition can be emulsion-type in the form of polymer, be also possible to powderLast type.Emulsion-type refers to, is present in one of solvent state with the particle form for dispersing in the polymer, powder-type refer toPolymer powder particle form is present in solvent.
Embodiment 2:
Calcium hydroxide weight is 10%~35%, aggregate weight 20%~60%, synthetic resin adhesive weight be 3%~7% and Semen Tritici aestivi fiber weight is 3%~10%, diatomite weight is 20%~45%.
In addition, synthetic resin adhesive includes: propylene-styrene system copolymer, vinyl acetate polymer and styrene/fourthThe one or more synthetic polymers selected in the group of diene rubber.By providing the selection of a variety of synthetic polymers, Neng GoumanThe different use demand of foot.In the present embodiment, in ethene-vinyl acetate or acrylate copolymer, substrate improves the viscous of filmIntensity is closed, the flexibility for being formed simultaneously film uses.
Wherein, the average particle diameter of synthetic resin adhesive is 0.5 μm or more.In the present embodiment, polymer is averagedPartial size is at least 0.5 μm, and in the case where forming film, the not formed polymeric layer of film coated surface cures the distinctive smell of limeIt can show moisture absorption and other effects.In addition, the average grain diameter of polymer is less than 0.5 μm, in the case where forming film, in film tableFilm is formed on the polymeric layer in face, keeps film rotten, makes it that there is permeability, such as moisture absorption to the white lime with deodorantProperty, it has little effect.If can determine commercial product according to catalogue, the average grain diameter of polymer, preferably 0.5 μm -15 μm.
It can be seen from the above description that the application realizes following technical effect:
The present invention using increase new material mode, by calcium hydroxide weight be 15%~40%, aggregate weight 30%~70%, synthetic resin adhesive weight is 5%~10% and Semen Tritici aestivi fiber weight is 3%~10%, diatomite weight is20%~45%, achieve the purpose that cooperatively form coating material, to realize the technical effect of purification air and dehumidifying, in turnThe technical issues of solving the substance containing harmful health in existing coating for wall surface, and air and dehumidifying can not be purified.
Coating through the invention can be realized the harmful substance in effective removal air, the moisture in air.By surveyingExamination, the slip of harmful substance are 50%, have the effect of good pure air；The reduction rate of air humidity is 30%, toolThere is good dry and moisture-proof effect.
A kind of building wall coating and preparation method thereof is also provided in the present embodiment.
Embodiment 3: a kind of building wall coating and preparation method thereof is prepared according to step in detail below.
Step 1 takes 100g to cross the diatomite of 80 meshes through ball milling, is added in ethyl alcohol, after ultrasonic disperse 2h, is obtained by filtrationPurified silicious earth A；
A is added in step 2 in 400mL water, and 50 DEG C of water-bath temperature control, polyvinyl alcohol 15g, hydroxyethyl cellulose 2g, ten is addedSodium dialkyl sulfate 5g and odium stearate 5g stirs 4h, obtains mixed solution B；
Step 3 takes 60% nitric acid of 40mL mass concentration, wherein organic titanate 10g and calcium nitrate 5g is added, is vigorously stirred1h obtains solution C；
Step 4 pours into solution C in solution B, stands 12h, and sodium hydroxide solution adjusts solution ph to neutrality, obtainsSolution D is transferred in reaction kettle, 150 DEG C of temperature control, places 4h；
Wet cake is obtained by filtration in solution D by step 5, through 110 DEG C of oven drying 10h, obtains solid E.
Embodiment 4: a kind of building wall coating and preparation method thereof is prepared according to step in detail below.
Step 1 takes 100g to cross the diatomite of 80 meshes through ball milling, is added in ethyl alcohol, after ultrasonic disperse 4h, is obtained by filtrationPurified silicious earth A；
A is added in step 2 in 400mL water, and 60 DEG C of water-bath temperature control, polyvinyl alcohol 30g, hydroxyethyl cellulose 5g, ten is addedSodium dialkyl sulfate 10g and odium stearate 10g stirs 7h, obtains mixed solution B；
Step 3 takes 60% nitric acid of 60mL mass concentration, wherein organic titanate 20g and calcium nitrate 10g is added, acutely stirs2h is mixed, solution C is obtained；
Step 4 pours into solution C in solution B, stands 36h, and sodium hydroxide solution adjusts solution ph to neutrality, obtainsSolution D is transferred in reaction kettle, 250 DEG C of temperature control, places 8h；
Wet cake is obtained by filtration in solution D by step 5, through 120 DEG C of oven drying 15h, obtains solid E.
Embodiment 5: a kind of building wall coating and preparation method thereof is prepared according to step in detail below.
Step 1 takes 100g to cross the diatomite of 80 meshes through ball milling, is added in ethyl alcohol, after ultrasonic disperse 7h, is obtained by filtrationPurified silicious earth A；
A is added in step 2 in 400mL water, and 70 DEG C of water-bath temperature control, polyvinyl alcohol 20g, hydroxyethyl cellulose 3g, ten is addedSodium dialkyl sulfate 8g and odium stearate 6g stirs 10h, obtains mixed solution B；
Step 3 takes 60% nitric acid of 50mL mass concentration, wherein organic titanate 15g and calcium nitrate 7g is added, is vigorously stirred3h obtains solution C；
Step 4 pours into solution C in solution B, stands 30h, and sodium hydroxide solution adjusts solution ph to neutrality, obtainsSolution D is transferred in reaction kettle, 200 DEG C of temperature control, places 6h；
Wet cake is obtained by filtration in solution D by step 5, through 130 DEG C of oven drying 20h, obtains solid E.
It is experimentally confirmed, obtained coating effect and performance are best in embodiment 4, and the slip of harmful substance is50%, have the effect of good pure air；The reduction rate of air humidity is 30%, has good dry and moisture-proof effectFruit.
The above is only one embodiment of the present invention, it is noted that those skilled in the art,Without departing from the concept of the premise of the invention, some similar deformation and improvement can be made, these also should be regarded as thisWithin the protection scope of invention.