CN104974630B - A kind of scrubbing resistance dry powder paint high and preparation method thereof - Google Patents
A kind of scrubbing resistance dry powder paint high and preparation method thereof Download PDFInfo
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- CN104974630B CN104974630B CN201510452052.7A CN201510452052A CN104974630B CN 104974630 B CN104974630 B CN 104974630B CN 201510452052 A CN201510452052 A CN 201510452052A CN 104974630 B CN104974630 B CN 104974630B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
- C09D133/12—Homopolymers or copolymers of methyl methacrylate
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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Abstract
The present invention discloses a kind of scrubbing resistance dry powder paint high and preparation method thereof.With percentage by weight, the composition of raw materials composition of scrubbing resistance dry powder paint high includes：Redispersable latex powder 5~30%, powdered whiting 20~40%, titanium dioxide 10~25%, mica powder 5~20%, kaolin 5~15%, cellulose ether 0.1~0.5%, powder defoamer 0.1~0.5%, dispersant 0.5~1%, coloring pigment 0~0.5%, powdered silane coupled agent addition agent 1~5%.Each component is well mixed and be can be made into.Property indices of the present invention meet the requirements of internal wall emulsion coating national standard, and VOC can not be detected, and have preferable water resistance, alkali resistance, weatherability and antifouling property, and contrast is high, and its washability number of times is up to more than 2000 times.
Description
Technical field
The present invention relates to a kind of dry powder paint, more particularly to a kind of environmentally friendly and scrubbable dry powder paint high and its preparation
Method, belongs to building coating field.
Background technology
In recent years, with the continuous improvement of people's environmental consciousness, people are to reducing the VOC in coating
(VOC) cry more and more higher.Direction of the coating just towards " three high and one low " is developed, i.e., high solid, high durable, high-performance,
Low stain.Various auxiliary agents in traditional aqueous architectural coating are the main sources of its VOC, at the same the water in coating to account for coating total
More than half of weight, coating needs to use substantial amounts of iron flask or plastic tank during transport.If emulsion can be prepared into
Redispersible latex powder, and dry powder paint is mixed and made into color stuffing, with plastic bag packaging, at the construction field (site) by dry powder paint
It is mixed and stirred for can be used with water.This not only reduces the discharge of VOC, and cause that coating is easier to pack and transports,
Reduce cost of transportation.Because powdered coating is affected by environment smaller in storage, addition antifreeze is not required in coating and is resisted
Go mouldy agent, not only reduce in coating VOC and extend storage cycle.
Core film forming matter in dry powder paint is redispersable latex powder, and its characteristic is directly connected to the property of dry powder paint
Energy.In order that dry powder paint film forming preferable at low temperature is without producing cracking, the vitrifying temperature of usual redispersable latex powder
Degree must generally be less than 5 DEG C, and the low Tg of rubber powder also directly results in the scrub performance of prepared dry powder paint
It is poor.Contradiction between film formation at low temp and scrubbing resistance always is a great problem of polymer redispersable latex powder.
The content of the invention
Shortcoming it is an object of the invention to overcome prior art, there is provided one kind is transported and easy to use, while meeting ring
Protect the scrubbing resistance green powdered paint high with high performance requirements.
Another object of the present invention is to provide a kind of preparation method of scrubbing resistance green powdered paint high.
On the premise of coating film formation at low temp performance is not influenceed, the present invention solves traditional dry powder paint compared to emulsion paint
The poor problem of scrubbing resistance so that dry powder paint meets environmentally friendly and high performance requirement simultaneously.And the transport of dry powder paint
It is all very convenient with using, it is possible to use various packed and transported forms such as packed, barreled.Be added into water and uniformly stirred before construction into
The various ways construction such as row brushing, roller coat, spraying, the paint film of formation has good scrubbing resistance, water resistance, weatherability, levelling
The characteristics such as property, pollution resistance.
The object of the invention is achieved through the following technical solutions：
A kind of scrubbing resistance dry powder paint high, by weight percentage, its composition of raw materials composition includes：
Described dispersant is the one kind or many in sodium metaphosphate, sodium polyphosphate, PTPP and tetrapotassium pyrophosphate
Kind；
Described powdered silane coupled additive is prepared via a method which：In terms of mass fraction, by 10 parts of silane
Coupling agent is dissolved in 40~60 part of second solvent, and the loaded article and 10~30 parts of loads of quality for adding 30~50 parts of quality increase
Strong agent solution, drying or spray drying, grinding, sieving, obtain powdered silane coupler after gained mixed liquor is disperseed
Additive；
Described silane coupler is gamma-aminopropyl-triethoxy-silane, γ-(2,3- the third oxygen of epoxy) propyl trimethoxy
Silane, 3- glycidyl ether hydroxypropyl methyls diethoxy silane, γ-(methacryloxypropyl) propyl trimethoxy silicane, second
One or more in alkenyl trimethoxy silane, γ-mercaptopropyl trimethoxysilane；Described loaded article is titanium dioxide, weight
Calcium, kaolin or mica powder；It is 0.5~3 part to load reinforcing agent in described load enhancing agent solution, described loaded article enhancing
Agent is one or more in polyvinyl alcohol, PVP and polyacrylamide.
Scrubbing resistance high is 7 days scrubbing resistance number of times detected values more than 2000 times.
Further to realize the object of the invention, it is preferable that described load enhancing agent solution is prepared via a method which：With
Mass fraction meter, 1 part of load reinforcing agent is dissolved in 9~19 parts of the first solvent, described the first solvent is water, ethanol,
One or more in acetone, DMF, ethylene glycol and butyl acetate.
Preferably, the sieve aperture of the sieving is 60~140 mesh.
Preferably, described cellulose ether is methylcellulose, hydroxymethyl cellulose, ethyl cellulose, hydroxy ethyl fiber
One or more in element, hydroxypropyl cellulose, benzylcellulose.
Preferably, the second described solvent is one or more mixing in water, acetone, methyl alcohol and ethanol.
Preferably, the technological parameter of the spray drying is：120~180 DEG C of inlet temperature, atomizer rotating speed is 16000
~20000r/min, feed rate is 2~5kg/h.
Preferably, the redispersable latex powder is by acrylic acid or acrylate monomer and methacrylic acid monomer or methyl
The emulsion of the core shell structure that acrylate monomer copolymerization is obtained is spray-dried to be prepared from.Redispersable latex powder is that dry powder is applied
The core film forming matter of material, its consumption is directly connected to the performance of film, present invention determine that its consumption is 5-30%, consumption is too low
Can cause that the adhesive property and intensity of film are poor, the too high rate of drying that can influence film of consumption and coating cost, its is optimal
Consumption is 15~30%.
Redispersable latex powder of the present invention can be according to the preparation method system described in patent CN 101696277B
：By in the acrylate polymer emulsion of pH adjusting agent 65~75 mass parts of addition of 1~15 mass parts, stir, adjust
Section pH value adds the drying aids of 15~20 mass parts to be uniformly mixing to obtain spray-drying mixt liquid to 8~9；Spraying is dry
Dry mixed liquor is spray-dried to prepare polyacrylate redispersable latex powder, and the anti-caking agent mixing of addition 2~8 mass point is equal
Through being filtrated to get last product after even；The inlet temperature that spray dryer is set when being wherein spray-dried is 125~150 DEG C,
It it is 65~80 DEG C by adjust charging rate to control outlet temperature, atomizer rotating speed is 21600~24000rpm.
The pH adjusting agent is NaOH, potassium hydroxide and/or the calcium hydroxide aqueous solution of mass concentration 1~10%；
Described drying aids are Ludox, and its mass percentage concentration is 20~40%；
The anti-caking agent is alumina silicate, calcium carbonate, talcum powder, kaolin and/or silica.
The acrylate polymer emulsion, is made up of the component of following mass percent：
The alkyl methacrylate is methyl methacrylate, EMA, propyl methacrylate, first
One kind or many in base butyl acrylate, pentylmethacrylate, hexyl methacrylate and/or EHMA
Kind.
The alkyl acrylate is methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, acrylic acid
One or more in pentyl ester, Hexyl 2-propenoate or Isooctyl acrylate monomer.
The hydroxy alkyl ester be 2-Hydroxy ethyl acrylate, acrylic acid -3- hydroxy propyl esters, acrylic acid -2- hydroxybutyls,
Acrylic acid -5- hydroxyls pentyl ester, the own ester of acrylic acid -6- hydroxyls, methacrylic acid -2- hydroxy methacrylates and/or methacrylic acid -3- hydroxyls
One or more in base propyl ester.
The alkyl carboxylic acid is methacrylic acid and/or acrylic acid.
The acrylic acid amides is acrylamide, Methacrylamide, N, N'- methylene-bisacrylamides, N- methylols
One or more in acrylamide and NIPA, it is introduced on polymer chain can not only improve acrylate
The resistance to ion stability of polymer emulsion, while the adhesion strength of emulsion and base material can be improved.
The hydrazides is unifor, N, N'- diacetyl hydrazines, maleic hydrazide, AH and/or decanedioic acid
Two hydrazides, hydrazides can react with alkyl carboxylic acid, in the degree of cross linking and water resistance for improving polymer simultaneously, also improve polymer molecule
The pliability of chain, reduces the MFT of emulsion so that emulsion at low temperature being capable of film forming.
The initiator is persulfuric acid salt initiator potassium persulfate, sodium peroxydisulfate and/or ammonium persulfate.
The emulsifying agent is that anion emulsifier and nonionic emulsifier are compounded, and anion emulsifier is dodecyl hexichol
Ether sulfonic acid disodium (DSB), neopelex (LAS) and/or lauryl sodium sulfate (SDS)；Nonionic emulsifier is
Polysorbas20 (Tween-20), Tween 80 (Tween-80), polyoxyethylene Zhong Xin phenolic ethers -10 (OP-10), and/or polyoxyethylene nonyl phenyl
Vinethene (TX-10), wherein anion emulsifier be in order to improve the mechanical stability of emulsion, and nonionic emulsifier be in order to
The ion stability of emulsion is improved, both mass ratios are 1：1‐4：1.
The water is deionized water.
The preparation method of the acrylate polymer emulsion is as follows：
A, by percentage to the quality, first by alkyl methacrylate described in 10%~50%, third described in 50%~90%
Olefin(e) acid Arrcostab, hydroxy alkyl ester, acrylic acid amides mixing described in alkyl carboxylic acid and 0~30% described in 0~30% described in 0~30%
It is made mix monomer I；Again by the remaining alkyl methacrylate of formula ratio, alkyl acrylate, hydroxy alkyl ester, alkyl carboxylic acid
Mix monomer II is mixed and made into acrylic acid amides；It is 1.5~3 with the mass ratio of mix monomer II to control mix monomer I：1；It is mixed
The polymers obtained glass transition temperature of monomer I glass transition temperature polymers obtained less than mix monomer II is closed, so both
Can ensure that emulsion does not stick together in spray-drying process, can guarantee that again emulsion normal temperature even under low temperature film forming and institute into
The hardness of film is high；
B, preparation seed emulsion：The water of water gross mass 60%~80% will be accounted for, total emulsifiers quality 40%~60% is accounted for
Emulsifying agent is added in reactor with the initiator for accounting for initiator quality 40%~50%, and dispersed with stirring 10~20 minutes treats temperature
Degree rises to 78~85 DEG C, by the mix monomer I of 5%~15% mass in 15~30 minutes instillation reactors, after completion of dropping
Insulation 15~30 minutes, is obtained seed emulsion；
C, in 1.5~2 hours, 75%~85% mix monomer I is uniformly added drop-wise to the seed emulsion that step b is obtained
In, reacted 15~30 minutes after completion of dropping；Then the mix monomer II of remaining mix monomer I and 10% is uniformly mixed into mixed
Monomer III is closed, and was uniformly added drop-wise in above-mentioned emulsion mix monomer III in 50~75 minutes, 15 are reacted after completion of dropping
~30 minutes, mix monomer III polymers obtained glass transition temperature was polymers obtained between mix monomer I here
Glass transition temperature and the polymers obtained glass transition temperature of mix monomer II, gather obtained by mix monomer I so as to be avoided
Compound and the polymers obtained generation microphase-separated of mix monomer II；Followed by by remaining mix monomer II at 1.5~2 hours
It is interior to be uniformly added drop-wise in above-mentioned emulsion；While monomer is added dropwise, remaining water, emulsifying agent and initiator are continuously added drop-wise to b step
In the seed emulsion for obtaining, reacted 0.5~1 hour after completion of dropping, then be warming up to 80~90 DEG C and be incubated 0.5~1 hour, then
40~50 DEG C are cooled to, are discharged with 100 mesh filter-cloth filterings, obtain final product acrylate polymer emulsion.
The relevant raw material of the present invention is described as follows：
Powdered whiting is to be ground to form by natural carbonate mineral such as calcite, marble, lime stone, is conventional powder
Shape inorganic filler, with chemical purity is high, inertia big, it is good to be difficult chemical reaction, heat endurance, will not be decomposed below 400 DEG C,
Whiteness is high, oil absorbency is low, index of refraction is low, matter is soft, it is dry, without the crystallization water, small, nontoxic, the tasteless low wearing valve of hardness, odorless,
The advantages of good dispersion, through being 800-1500 mesh, optimum amount is 30~40% to its grain.
Titanium dioxide is a kind of white inorganic pigment, mainly there is two kinds of crystal formations of anatase titanium dioxide and rutile-type.Due to it density,
Dielectric constant and refractive index are all very superior, it is considered to be a kind of current best Chinese white of performance in the world, are widely used in
In coating, using the relatively low anatase thpe white powder of price, its optimum amount is 15~25% to the present invention.
Mica powder is a kind of nonmetallic mineral, containing Multiple components, wherein mainly there is SiO2, content is typically on 49% left side
The right side, Al2O3Content is 30% or so.Mica has good elasticity, toughness, insulating properties, high temperature resistant, acid and alkali-resistance, corrosion-resistant, attached
Put forth effort the characteristic such as strong.Mica powder is added in the formula can improve the anti-cracking performance of paint film, and its optimum amount is 8~18%.
Kaolin is a kind of silicate mineral containing aluminium, kaolin has that whiteness is high, matter is soft, easy dispersion suspends in water,
Good plasticity and caking property high.The suspension of coating can be improved, pigment sedimentation is prevented, the covering power of titanium dioxide is improved.
But its water imbibition is big, and alkali resistance is poor, its optimum amount is 8~13%.
Cellulose ether is polymer substance of the cellulose by chemical modification, is a kind of good thickening and adjusting coating stream
The auxiliary agent of denaturation, while can be used to adjust dried coating film speed, improves film forming.Its optimum amount is 0.2~0.4%.It is described
Cellulose ether be methylcellulose, hydroxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, benzyl
One or more mixing in cellulose.
Suppress the generation with bubble during paint, promote the rupture of bubble, prevent flake, pin occur during drying varniss
The disadvantages such as hole, volcanic crater.Its optimum amount is 0.1~0.5%.
The dispersant is a kind of anionic dispersing agent, can increase the gloss of film, improves levelability, improves coating
Coloring and covering power, prevent loose colour, sedimentation.Its optimum amount is 0.5~1%.Described dispersant is sodium metaphosphate, poly phosphorus
One or more in sour sodium, PTPP, tetrapotassium pyrophosphate of mixture.
Preferably, the raw material composition of the scrubbing resistance dry powder paint high also includes coloring pigment, to account for composition of raw materials quality
Percentages, coloring pigment consumption is 0~0.5%；The coloring pigment selective oxidation iron oxide yellow, iron oxide red, barba hispanica, zinc chrome
Huang, cadmium yellow, chrome oxide green, benzimidazole ketone, azo, condensed ring ketone or heterocyclic.It is various that coloring pigment can assign paint film
Color, lifts the decoration performance of coating, while can also improve the covering power and weatherability of film.Its optimum amount is 1~4%.
The preparation method of the scrubbing resistance dry powder paint high：Scrubbing resistance dry powder paint feed components high are put into proportion
Mix 30~40 minutes in dry powder blender, then larger particle is screened out with the sieve of 60~140 mesh, finally weigh packaging i.e.
Obtain product.
During construction, scrubbing resistance dry powder paint high is added water and be can be used after stirring, wherein the matter of dry powder paint and water
Amount is than being 1:1.5~1:2.0.
The present invention has the following advantages compared with prior art：
1) product obtained by the present invention is solid powder, it is possible to use packed, and bag is easier compared to traditional emulsion paint
Shipment is defeated, and packing cost and freight is greatly reduced；
2) all solid powders of component of the dry powder paint obtained by the present invention, do not have the material of any volatile, nothing
Malicious odorlessness, will not produce stimulation to the skin of workmen and respiratory tract；
3) present invention introduces silane coupler in dry powder paint system, is increased greatly by the coupled action of silane coupler
Strong adhesion strength between organic binder matter and inorganic color stuffing, effectively improves the water resistance of dry powder paint, alkaline-resisting
Property and antifouling property；
4) process is simple is configured, it is easy to use.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, it is necessary to illustrate, embodiment is not constituted
Limitation to the claimed scope of the invention.
Embodiment 1
The preparation of powdered silane coupled agent addition agent：6 polyvinyl alcohol (PVA1788) are dissolved in 54g deionized waters
Obtain the load enhancing agent solution of 60g.The silane coupler 3- glycidyl ether hydroxypropyl methyl diethoxy silanes of 20g is molten
In the ethanol of 120g, the kaolin of 60g and the load enhancing agent solution of 60g are added, liquid mixed above is disperseed in high speed
Drying in 65 DEG C of baking oven is put into after disperseing 5 minutes with the rotating speed of 1000r/min on machine, the inspection of 80 mesh is used after powder mull
It is sieved through sieve and obtains powdered silane coupled agent addition agent.
Scrubbing resistance green powdered paint high, is made up of following percetage by weight component：Redispersable latex powder 20%, weight
Matter calcium carbonate 33.4%, anatase thpe white powder 22%, mica powder 10%, kaolin 10%, hydroxyethyl ether cellulose 0.2%, powder
Last defoamer ADEKA NATE B-107F0.4%, dispersant PTPP 1%, above-mentioned powdered silane coupler addition
Agent 3%.
The preparation method of scrubbing resistance green powdered paint high is：Above-mentioned formula each component is proportionally added into dry powder mixing
Mix 30 minutes in conjunction machine, screen out big particle with 120 mesh sieve, packaging of weighing.During construction, by dry powder paint and 1.5 times of matter
The water mixing and stirring of amount.Preferably, paint film feel is fine and smooth for coating application performance, and its property indices test result is shown in Table 1.
Method of testing is as follows：VOC standard methods according to GB1852-2008 are determined using gas chromatography；7d is washable
The standard method according to GB/T 9266-2009 of brush number of times is measured using PG-V building coating scrubbing resistance instrument；Coating hiding rare root
According to standard method described in GB 9270-1988, determined by C84-IIIB coating hiding rares tester；Alkali resistance is according to GB/T
Standard method described in 9265-2009 is tested.
Embodiment 2
The preparation of powdered silane coupled agent addition agent：1g polyvinyl alcohol (PVA1788) is dissolved in 3g N, N- dimethyl
The load enhancing agent solution of 10g is obtained in the mixed solvent of formamide and 6g butyl acetates.By the silane coupler γ-mercapto of 20g
Propyl trimethoxy silicane is dissolved in 120g acetone, adds the kaolin of 60g and the above-mentioned load enhancing agent solution of 10g, will
Spray drying obtains powdered silicon after liquid mixed above is disperseed 5 minutes on high speed dispersor with the rotating speed of 1000r/min
Alkane is coupled agent addition agent；The technological parameter of above-mentioned spray drying is：150 DEG C of inlet temperature, atomizer rotating speed is 16000r/min,
Feed rate is 2.5kg/h.
Scrubbing resistance green powdered paint high, is made up of following percetage by weight component：Redispersable latex powder 22%, weight
Matter calcium carbonate 32.3%, anatase thpe white powder 18%, mica powder 10%, kaolin 12%, HEMC 0.2%,
Powder defoamerP803 accounts for 0.4%, and dispersant tetrapotassium pyrophosphate 1%, iron oxide yellow 0.1% is above-mentioned powdered
Silane coupled agent addition agent 4%.
The preparation method of scrubbing resistance green powdered paint high is：Above-mentioned formula each component is proportionally added into dry powder mixing
Mix 30 minutes in conjunction machine, screen out big particle with 120 mesh sieve, packaging of weighing.During construction, by dry powder paint and 1.5 times of matter
The water mixing and stirring of amount.Preferably, paint film feel is fine and smooth for coating application performance, and its property indices test result is shown in Table 1,
Method of testing is with embodiment 1.
Embodiment 3
The preparation of powdered silane coupled agent addition agent：2 polyvinyl alcohol (PVA1788) are dissolved in 23g deionized waters
Obtain the load enhancing agent solution of 25g.The silane coupling agent vinyl trimethoxy silane of 20g is dissolved in 40g ethanol and 40g third
In the mixed solvent of ketone composition, the mica powder of 60g and the above-mentioned load enhancing agent solution of 25g are added, liquid mixed above is existed
Drying, the powder mull that will be obtained in 65 DEG C of baking oven are put into after disperseing 5 minutes with the rotating speed of 1000r/min on high speed dispersor
Sieved using the test sieve of 80 mesh afterwards and obtain powdered silane coupled agent addition agent.
Scrubbing resistance green powdered paint high, is made up of following percetage by weight component：Redispersable latex powder 25%, weight
Matter calcium carbonate 30.3%, anatase thpe white powder 20%, mica powder 8%, kaolin 12%, hydroxymethyl cellulose 0.3%, powder disappears
Infusion steps the DD 0.4% of figure AXILAT DF 770, dispersant tetrapotassium pyrophosphate 1%, above-mentioned powdered silane coupler addition
Agent 3%.
The preparation method of scrubbing resistance green powdered paint high is：Above-mentioned formula each component is proportionally added into dry powder mixing
Mix 30 minutes in conjunction machine, screen out big particle with 120 mesh sieve, packaging of weighing.During construction, by dry powder paint and 1.6 times of matter
The water mixing and stirring of amount.Preferably, paint film feel is fine and smooth for coating application performance, and its property indices test result is shown in Table 1,
Method of testing is with embodiment 1.
Embodiment 4
The preparation of powdered silane coupled agent addition agent：2 PVPs (PVP K30) are dissolved in 28g second
The load enhancing agent solution of 30g is obtained in alcohol.By the silane coupler γ of 20g-(methacryloxypropyl) propyl trimethoxy silicon
Alkane is dissolved in the ethanol of 80g, the coarse whiting of 70g and the above-mentioned load enhancing agent solution of 30g is added, by liquid mixed above at a high speed
Spray drying obtains powdered silane coupled agent addition agent after being disperseed 5 minutes with the rotating speed of 1000r/min on dispersion machine；On
The technological parameter for stating spray drying is：130 DEG C of inlet temperature, atomizer rotating speed is 18000r/min, and feed rate is 3.5kg/
h。
Scrubbing resistance green powdered paint high, is made up of following percetage by weight component：Redispersable latex powder 15%, weight
Matter calcium carbonate 38.4%, anatase thpe white powder 23%, mica powder 8%, kaolin 10%, hydroxyethyl cellulose 0.2%, powder disappears
InfusionP803 accounts for 0.4%, dispersant PTPP 1%, above-mentioned powdered silane coupled agent addition agent 5%.
The preparation method of scrubbing resistance green powdered paint high is：Above-mentioned formula each component is proportionally added into dry powder mixing
Mix 30 minutes in conjunction machine, screen out big particle with 120 mesh sieve, packaging of weighing.During construction, by dry powder paint and 1.5 times of matter
The water mixing and stirring of amount.Preferably, paint film feel is fine and smooth for coating application performance, and its property indices test result is shown in Table 1,
Method of testing is with embodiment 1.
Embodiment 5
The preparation of powdered silane coupled agent addition agent：1 polyacrylamide is dissolved in 19g water the load for obtaining 20g
Enhancing agent solution.The silane coupling agent vinyl trimethoxy silane of 20g is dissolved in the acetone of 90g, the mica of 60g is added
The above-mentioned load enhancing agent solution of powder and 20g, 5 are disperseed by liquid mixed above on high speed dispersor with the rotating speed of 1000r/min
Spray drying obtains powdered silane coupled agent addition agent after minute；The technological parameter of above-mentioned spray drying is：Import temperature
160 DEG C of degree, atomizer rotating speed is 20000r/min, and feed rate is 5kg/h.
Scrubbing resistance green powdered paint high, is made up of following percetage by weight component：Redispersable latex powder 28%, weight
Matter calcium carbonate 30.4%, anatase thpe white powder 20%, mica powder 8%, kaolin 9%, hydroxymethyl cellulose 0.3%, powder disappears
Infusion ADEKA NATE B-107F 0.3%, dispersant tetrapotassium pyrophosphate 0.8%, above-mentioned powdered silane coupler addition
Agent 1%.
The preparation method of scrubbing resistance green powdered paint high is：Above-mentioned formula each component is proportionally added into dry powder mixing
Mix 30 minutes in conjunction machine, screen out big particle with 120 mesh sieve, packaging of weighing.During construction, by dry powder paint and 1.5 times of matter
The water mixing and stirring of amount.Preferably, paint film feel is fine and smooth for coating application performance, and its property indices test result is shown in Table 1,
Method of testing is with embodiment 1.Table Plays required value normative reference is that GB 1852-2008 indoor decorating and refurnishing materials-interior wall is applied
Limits of harmful substances and GBT 9756-2009 resin latex dopes in material.
Each example coating property test result of table 1
As it can be seen from table 1 the main advantage of product of the present invention is that washability number of times is high, the interior wall reported in document is done
The scrubbing resistance of powder coating is as follows：(Pei Yongbing, Zhang Xinya, He Yanping wait redispersable latex powder dry powder latex paints to Pei Yongbing
Preparation and performance [J] fine chemistry industries, 2009,26 (9):911-914.) etc. its washability number of times of the dry powder paint of preparation is
300~1600 times, (Liu Chenglou, Meng Xian deposit development [J] the Chinese building materials section of antibacterial environment protection type dry powder interior wall coatings to Liu Chenglou
Skill, 2009, (3):31-35.) etc. the washability number of times of the dry powder paint of preparation is 650~1800 times.The dry powder of product of the present invention
Coating washability number of times is more than 2000 times.
Silane coupler in the silane coupler loaded article added in product of the present invention adds water dispersion in dry powder paint
During be discharged into coating system, silane coupler is to contain two kinds of different chemical property groups in molecule simultaneously
The silane of (organo-functional group and hydrolyzable groups), its classical product can use formula (YR)nSiX4‐nRepresent (n=1,2).Formula
Middle YR is non-hydrolytic organic group, and YR includes that alkenyl (predominantly vinyl) and end carry Cl, NH2, SH, OCOMe, CH
The alkyl of the functional groups such as=CH2, NCO；X reacts and generates the group of Si-OH for that can be hydrolyzed, including Cl, OMe, OEt,
OC2H4OCH3, OSiMe, and OAc etc. (most commonly OMe, OEt), can chemically react with inorganic material, or absorption
In material surface, so as to improve the compatibility with inorganic material.X, Y are the different active group of two class response characteristics, and wherein X is easy
With inorganic matter or mineral matter such as glass, silica, potter's clay, clay, talcum, titanium dioxide and some metals for example aluminium, titanium, silicon, iron,
The binding ability of copper, zinc etc..And the product such as Y resin, rubber then easily and in organic matter has good combination.Just because of silane
Enter to exist the organic and close two kinds of inorganic functional groups of parent in the middle of coupling agent molecule, can be two kinds of different chemical structures types and parent
Coupled together at interface with the material that power differs greatly, increase coating and inorganic bottom and pigment, between filler and resin binder
With reference to.
Redispersable latex powder is organic resin in product of the present invention, and it is inorganic matter that color stuffing is most of.Silane coupler
Can cause that the latex particle and color stuffing of redispersable latex powder formation are formed by the chemical bonds of silane coupler to hand over
Networking network, makes paint film more fine and close and water-fast；Silane coupler also enhances paint film and base material adhesion strength simultaneously.So that paint
The scrubbing resistance number of times of film has and is obviously improved.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent replacement mode is should be, is included within protection scope of the present invention.
Claims (9)
1. a kind of scrubbing resistance dry powder paint high, it is characterised in that by weight percentage, its composition of raw materials composition includes：
Described dispersant is one or more in sodium metaphosphate, sodium polyphosphate, PTPP and tetrapotassium pyrophosphate；
Described powdered silane coupled agent addition agent is prepared via a method which：In terms of mass fraction, by 10 parts of silane idols
Connection agent is dissolved in 40~60 part of second solvent, add 30~50 parts of quality loaded article and 10~30 parts of loads enhancings of quality
Agent solution, drying or spray drying, grinding, sieving, obtain powdered silane coupler and add after gained mixed liquor is disperseed
Plus agent；
Described silane coupler is gamma-aminopropyl-triethoxy-silane, γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicon
Alkane, 3- glycidyl ether hydroxypropyl methyls diethoxy silane, γ-(methacryloxypropyl) propyl trimethoxy silicane, ethene
One or more in base trimethoxy silane, γ-mercaptopropyl trimethoxysilane；Described loaded article be titanium dioxide, coarse whiting,
Kaolin or mica powder；
In terms of mass fraction, it is 0.5~3 part to load reinforcing agent in described load enhancing agent solution, described loaded article enhancing
Agent is one or more in polyvinyl alcohol, PVP and polyacrylamide；
Described load enhancing agent solution is prepared via a method which：In terms of mass fraction, 1 part of load reinforcing agent is dissolved in 9
In~19 parts of the first solvent, the first described solvent is water, ethanol, acetone, DMF, ethylene glycol and acetic acid
One or more in butyl ester.
2. scrubbing resistance dry powder paint high according to claim 1, it is characterised in that the sieve aperture of the sieving is 60~140
Mesh.
3. scrubbing resistance dry powder paint high according to claim 1, it is characterised in that the original of the scrubbing resistance dry powder paint high
Material composition also includes coloring pigment, and to account for the percentages of composition of raw materials, coloring pigment consumption is 0~0.5%；The coloring face
Material selective oxidation iron oxide yellow, iron oxide red, barba hispanica, zinc yellow, cadmium yellow, chrome oxide green, benzimidazole ketone, azo, condensed ring ketone
Class or heterocyclic.
4. scrubbing resistance dry powder paint high according to claim 1, it is characterised in that described cellulose ether is Methyl cellulose
One kind or many in element, hydroxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and benzylcellulose
Kind.
5. scrubbing resistance dry powder paint high according to claim 1, it is characterised in that the second described solvent be water, acetone,
One or more mixing in methyl alcohol and ethanol.
6. scrubbing resistance dry powder paint high according to claim 1, it is characterised in that the technological parameter of the spray drying
For：120~180 DEG C of inlet temperature, atomizer rotating speed is 16000~20000r/min, and feed rate is 2~5kg/h.
7. scrubbing resistance dry powder paint high according to claim 1, it is characterised in that the redispersable latex powder is by propylene
The emulsion warp of the core shell structure that acid or acrylate monomer are obtained with methacrylic acid monomer or methacrylate monomers copolymerization
Spray drying is prepared from.
8. scrubbing resistance dry powder paint high according to claim 1, it is characterised in that the powder defoamer be polyethers,
Polysiloxane-based or higher alcohols defoamer.
9. the preparation method of scrubbing resistance dry powder paint high described in any one of claim 1-8, it is characterised in that do scrubbing resistance high
Powder coating feed components mix 30~40 minutes in putting into dry powder blender in proportion, then are sieved with the sieve of 60~140 mesh
Except larger particle, packaging of finally weighing obtains product.
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| CN107502111A (en) * | 2017-09-01 | 2017-12-22 | 北京宝辰联合科技股份有限公司 | A kind of dry powder opalescent lacquers and preparation method thereof |
| CN109825134A (en) * | 2019-01-29 | 2019-05-31 | 郑州高聚粉体科技有限公司 | A kind of dry powder paint marking and preparation method thereof |
| CN113122095A (en) * | 2021-04-21 | 2021-07-16 | 浙江华德新材料有限公司 | High-solid low-viscosity aqueous composition for one-time coating |
| CN116023814A (en) * | 2023-01-05 | 2023-04-28 | 广东嘉宝莉科技材料有限公司 | Dry powder emulsion paint and preparation method and application method thereof |
| CN117757347B (en) * | 2023-12-13 | 2024-05-28 | 佛山市鑫诚环保新材料有限公司 | Weather-resistant wood grain wood powder coating and preparation method thereof |
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| CN103059608B (en) * | 2012-12-25 | 2014-07-16 | 河北工业大学 | Secondary coupled modified mineral powder filling material and preparation process thereof |
| CN103146240B (en) * | 2013-03-26 | 2015-04-29 | 成都新柯力化工科技有限公司 | Dry powder latex paint and preparation method |
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