CN109666320A - Aqueous amino-stoving varnish and preparation method thereof with resistance to acid and alkali and soil resistance - Google Patents
Aqueous amino-stoving varnish and preparation method thereof with resistance to acid and alkali and soil resistance Download PDFInfo
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- CN109666320A CN109666320A CN201811381190.0A CN201811381190A CN109666320A CN 109666320 A CN109666320 A CN 109666320A CN 201811381190 A CN201811381190 A CN 201811381190A CN 109666320 A CN109666320 A CN 109666320A
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
Abstract
A kind of aqueous amino-stoving varnish and preparation method thereof with resistance to acid and alkali and soil resistance is provided, which includes: the aqueous polyester resin of 20~30 mass parts, the water-based acrylic resin of 15~25 mass parts, methacrylic acid β-ethoxy ethyl ester of 5~10 mass parts, the anti-graffiti surface modifier of 0.1~1 mass parts and the polytetrafluoroethylwax wax water-borne dispersions of 0.1~1 mass parts.The aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance of the present invention has excellent acid resistance, alkali resistance, impact resistance, weatherability and stain resistance.
Description
Technical field
The present invention relates generally to paint fields, and particularly, are related to having resistance to acid and alkali and the aqueous amino of soil resistance roasting
Paint and preparation method thereof.
Background technique
China has a vast territory, and orographic condition is varied.Due to natural cause and human factor, there are a large amount of areas in China
Salt-soda soil, saline alkali land area row top 10 country in occupy third.China salt-soda soil is distributed in northwest, northeast, North China
Deng 17 provinces and regions including area, wherein there is maximum saline-alkali soil area, China in Xinjiang.Saline-alkali wasteland and the salt-soda soil for influencing arable land
The gross area is more than 500,000,000 mu, wherein accounting for 10% or more the Chinese arable land gross area with Potential Agricultukal Productivity.The resident in these areas
The phenomenon that farm machinery and agri-vehicle used, paint film dusting can occur because of the higher soil environment of alkalinity, cracking,
Paint film is caused to fail, metal heavy corrosion causes huge loss, therefore the alkali resistance of the local farm machinery of raising and vehicle is just
It is very necessary.
Traditional coating is solvent based coating, although some kind alkaline resistance properties reach requirement, due to wherein containing a large amount of
Organic solvent, when use, release a variety of volatile organic compounds such as toluene, benzene, dimethylbenzene, pollute environment, also bring to people
Health hazard.Therefore, how a kind of alkali resistance is provided, the aqueous amino-stoving varnish of low VOC content be those skilled in the art urgently
The technical issues of solution.
Summary of the invention
The present invention provides a kind of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, wherein and the baking vanish includes: 20~
The aqueous polyester resin of 30 mass parts, the water-based acrylic resin of 15~25 mass parts, 5~10 mass parts methacrylic acid
Aqueous point of the polytetrafluoroethylwax wax of β-ethoxy ethyl ester, the anti-graffiti surface modifier of 0.1~1 mass parts and 0.1~1 mass parts
Granular media.
In some embodiments, in the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, the methyl
Propenoic acid beta-ethoxy ethyl ester glass transition temperature is 45 DEG C~55 DEG C.
In some embodiments, in the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, the baking vanish is also
The hexamethoxy methyl melamine of methyl etherified high imino group melamine resin and 1~6 mass parts including 5~10 mass parts
Polyimide resin.
In some embodiments, in the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, the methyl
Being etherified high imino group melamine resin is cyanogen spy CYMEL 325, and the HMMM resin is that cyanogen is special
CYMEL 303LF。
In some embodiments, in the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, the baking vanish is also
The wetting agent of neutralizer, 0.1~0.5 mass parts including 0.5~2 mass parts, the defoaming agent of 0.1~0.3 mass parts, 1~5
The butyl glycol ether of mass parts, 30~40 mass parts phthalocyanine blue slurry and 10~15 mass parts titanium dioxide slurry.
In some embodiments, in the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, the titanium white
It is 70% that slurry, which is mass fraction,.
In some embodiments, in the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, the anti-painting
Crow surface modifier is Bi Ke chemical coating surfactant B YK-SILCLEAN 3720.
Another aspect of the present invention provides a kind of preparation method of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance,
Include the following steps:
Step 1: by aqueous polyester resin, water-based acrylic resin, neutralizer, butyl glycol ether, ethyl alcohol, deionized water,
In methyl etherified high imino group melamine resin and HMMM resin investment reaction kettle, in 800r/min
~1000r/min revolving speed carries out the dispersion stirring min of 5min~10；
Step 2: under the speed stirring condition of 800-1000r/min, sequentially add wetting agent, phthalocyanine blue slurry, titanium dioxide slurry,
Anti-graffiti surface modifier and defoaming agent stir 15min~20min under 500r/min~700r/min revolving speed.
In some embodiments, the preparation method of the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance
In, between the step 1 and the step 2 further include:
Into the reaction kettle be added methacrylic acid β-ethoxy ethyl ester, 800r/min~1000r/min revolving speed into
Row dispersion stirring 5min~10min.
The utility model has the advantages that
In aqueous amino-stoving varnish of the present invention with resistance to acid and alkali and soil resistance, by using chemical-resistance compared with
Good acrylic resin and polyester resin, while special surface modifier and polytetrafluoroethylene (PTFE) wax dispenser are used, to make amino
Baking vanish paint film reaches excellent chemical resistance and anti-pollution；Reach reduction VOC emission again simultaneously, protects the purpose of environment.
In aqueous amino-stoving varnish of the present invention with resistance to acid and alkali and soil resistance, anti-graffiti surface modifier is selected,
So that surface of the paint film tension is declined to a great extent, reach excellent soil resistance, surface of the paint film spot is easy to clean；Paint is further promoted simultaneously
The resistance to acid and alkali of film makes paint film have more long protective under relatively rugged environment.
Specific embodiment
The existing various exemplary embodiment that the present invention will be described in detail, the detailed description are not considered as to limit of the invention
System, and it is understood as the more detailed description to certain aspects of the invention, characteristic and embodiment.
It should be understood that it is to describe special embodiment that heretofore described term, which is only, it is not intended to limit this hair
It is bright.In addition, for the numberical range in the present invention, it is thus understood that it is also specifically disclosed that every between the upper and lower bound of the range
A median.In in the median and any other statement value in any statement value or stated ranges or in the range
Between each of between value lesser range be also included in the present invention.These small range of upper and lower bounds can independently include
Or it excludes in range.
Unless otherwise stated, all technical and scientific terms used herein has the routine in field of the present invention
The normally understood identical meanings of technical staff.Although the present invention only describes preferred method and material, of the invention
Implement or also can be used and similar or equivalent any method and material described herein in testing.The institute mentioned in this specification
There is document to be incorporated by reference into, to disclosure and description method relevant to the document and/or material.It is incorporated to any
When document conflicts, it is subject to the content of this specification.
Without departing substantially from the scope or spirit of the invention, the specific embodiment of description of the invention can be done more
Kind improvements and changes, this will be apparent to those skilled in the art.Other realities obtained by specification of the invention
Applying mode for technical personnel is apparent obtain.Present specification and embodiment are merely exemplary.
It is open term, i.e., about "comprising" used herein, " comprising ", " having ", " containing " etc.
Mean including but not limited to.
Heretofore described " mass parts " or " % " unless otherwise instructed, by mass.
The present invention provides a kind of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, which includes: 20~30 matter
Measure the aqueous polyester resin of part, the water-based acrylic resin of 15~25 mass parts, 5~10 mass parts methacrylic acid β-second
The polytetrafluoroethylwax wax water-borne dispersions of oxygroup ethyl ester, the anti-graffiti surface modifier of 0.1~1 mass parts and 0.1~1 mass parts.
The WPE-01 that heretofore described aqueous polyester resin selects Guangdong Dowstone Technologies Co., Ltd. to produce,
The polyester resin that it is high for a glossiness, chemical resistance is good, and viscosity is lower, is easy to painting.Heretofore described is aqueous
The WAC-07 that acrylic resin selects Guangdong Dowstone Technologies Co., Ltd. to produce is that a chemical resistance is good, weatherability
Water soluble acrylic resin good, boiling resistance is good.Aqueous polyester resin and water-based acrylic resin mixing in the present invention, can be with
Take into account the excellent chemical resistance of paint film, weatherability and preferable application property.
Heretofore described anti-graffiti surface modifier selects the production of Wuhan Kun Peng new chemical materials development corporation, Ltd.
BYK-SILCLEAN 3720 is silicone-modified-OH group acrylates, and physical testing is shown, adds the dry of the auxiliary agent
Membrane coat surface tension reduces 15%, and the tension of surface polarity component has dropped 97%, and rushes in the hot water that have passed through 80 DEG C
It still maintains constant after washing, the hydrophobic of paint film greatly improved and denounces oily characteristic, have automatically cleaning characteristic, reach lotus leaf effect, it should
Auxiliary agent reduces being covered with dust property, improves film cleaning, improves surface of the paint film slipping, water resistance (anti-whiten), resist blocking and that and resistance to
Hou Xing
Anti-pollution characteristic and chemical-resistance are excellent.
Heretofore described polytetrafluoroethylwax wax water-borne dispersions are Nanjing Tianshi New Material Technologies Co., Ltd.'s production
PTFE-1005, have extremely low coefficient of friction so that paint film have splendid resistance to marring, resistance to soiling, surface slip.
Methacrylic acid β-is added in the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance described in the present invention
Ethoxy ethyl ester, the physical mechanical strength for increasing paint film is strong, while increasing the good permeability of paint film, improves paint film using gas permeability
Acid-base balance ability, improve the acidproof alkali ability of paint film.
The synthesis of the methacrylic acid β-ethoxy ethyl ester:
1. the preparation of methacrylic chloride: 1000ml four-hole bottle is taken, electric mixer, reflux condensing tube, dropping funel are filled,
330g methacrylic acid, proper catalyst SnCl is added4, using hydroquinone as polymerization inhibitor, (additional amount is methacrylic acid amount
0.5%) 60 DEG C, are warming up to, stirring is lower to submit 180g phosphorus trichloride (about 1.3mol) by dropping funel, controls temperature 60
DEG C, it submitted and finishes through 30 minutes 1 hour.Continue to stir, react 30 minutes, be then changed to atmospheric distillation plant, collects 95~98
Fraction between DEG C, obtained colourless liquid are methacrylic chloride；
2. the preparation of methacrylic acid β-ethoxy ethyl ester: take 500ml four-hole bottle, dress electric mixer, reflux condensing tube,
169g ethylene glycol ethyl ether, 140g pyridine is added in dropping funel, and ice-brine bath stabilizes to 0 DEG C, and stirring is lower to be dripped by dropping funel
Add 172g methacrylic chloride (about 1.6mol), was added dropwise through 30 minutes.It is kept for 0~2 DEG C react 1 hour, connects hydrogen chloride suction
Receiving apparatus is heated to 50 DEG C, with the hydrogen chloride in cleaning reaction system, obtains crude product.
Crude product is washed respectively with saturated aqueous sodium carbonate, saturated sodium-chloride water solution, distilled water, after being washed till neutrality,
It is dry with anhydrous calcium chloride, it stands overnight.
0.1% polymerization inhibitor is added in crude product after the drying, is evaporated under reduced pressure, collects 90~92 DEG C
(20mmHg) fraction obtains nothing and remits liquid, as methacrylic acid β-ethoxy ethyl ester.
In above scheme, the glass transition temperature of the methacrylic acid β-ethoxy ethyl ester is 45 DEG C~55 DEG C.Preferably,
The glass transition temperature of the methacrylic acid β-ethoxy ethyl ester is 45 DEG C, 47 DEG C, 49.8 DEG C, 50 DEG C or 55 DEG C.
In in above scheme, which further includes the methyl etherified high imino group melamine resin and 1 of 5~10 mass parts
The HMMM resin of~6 mass parts.Wherein, the methyl etherified high imino group melamine resin is cyanogen
Special CYMEL 325, the HMMM resin are cyanogen spy CYMEL 303LF.
In above scheme, the methyl etherified high imino group melamine resin is that U.S.'s cyanogen refers in particular to determine south China Qu total generation
The cyanogen spy CYMEL 325 of Li Wengkaier Co., Ltd production, can be anti-with the polymer containing hydroxyl, amide groups, carboxyl
It answers.Resin energy fast reaction under relatively lower temp, without using acid catalyst.In above scheme, the hexakis-methoxy
Methyl melamine resin is the cyanogen spy CYMEL that U.S.'s cyanogen refers in particular to determine the production of general agency Weng Kaier Co., Ltd, south China area
303LF is liquid condition, and non-volatile part content > 98% can be used as acrylic resin, alkyd resin, polyester resin and epoxy
The crosslinking agent of the various kinds of resin such as resin.Its participation cross-linking reaction required temperature is higher than 325 resins, can provide for paint film good
Flexibility and mouldability.
In the present invention, cyanogen 325 resins of spy and cyanogen spy's 303LF resin are mixed according to 1-4/1, it is preferable that cyanogen 325 resins of spy
Mass ratio with cyanogen spy's 303LF resin is 2~3/1, for example, the mass ratio 2/1 of cyanogen 325 resins of spy and cyanogen spy's 303LF resin,
2.5/1,8/3 or 3/1, hardness of paint film and flexibility can be made to reach a preferable equalization point, and solidification temperature is moderate.
In above scheme, the baking vanish further include the neutralizer of 0.5~2 mass parts, 0.1~0.5 mass parts wetting agent,
The defoaming agent of 0.1~0.3 mass parts, the butyl glycol ether of 1~5 mass parts, 30~40 mass parts phthalocyanine blue slurry and 10~15
The titanium dioxide slurry of mass parts.The titanium dioxide slurry is that quality percentage number is 70%.
Another aspect of the present invention also provides a kind of preparation method of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance,
It includes the following steps:
Step 1: by aqueous polyester resin, water-based acrylic resin, neutralizer, butyl glycol ether, ethyl alcohol, deionized water,
In methyl etherified high imino group melamine resin and HMMM resin investment reaction kettle, in 800r/min
~1000r/min revolving speed carries out the dispersion stirring min of 5min~10；
Step 2: under the speed stirring condition of 800-1000r/min, sequentially add wetting agent, phthalocyanine blue slurry, titanium dioxide slurry,
Anti-graffiti surface modifier and defoaming agent stir 15min~20min under 500r/min~700r/min revolving speed.
In above scheme, the preparation method of the aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, described
Between step 1 and the step 2 further include:
Into the reaction kettle be added methacrylic acid β-ethoxy ethyl ester, 800r/min~1000r/min revolving speed into
Row dispersion stirring 5min~10min.
Hardness of the present invention is by referring to national standard " GB/T 6739-2006 paint and varnish pencil method measurement paint
Film hardness " it tests.
Adhesive force of the present invention is come by reference to national standard " GB/T 1720-1979 paint film adhesion measuring method "
Test.
Flexibility of the present invention is tested by national standard " GB/T 1731-1993 paint film flexibility measuring method ".
By reference to national standard, " GB/T 1765-1979 (89) measures the Xing of Nai Shi ﹑ salt tolerant to weatherability of the present invention
The paint film the preparation method of Wu ﹑ weatherability (artificial acceleration) " it tests.
Alkali resistance and acid resistance of the present invention pass through national standard " GB/T 1763-1979 paint film chemical reagent resistance
Measuring method " it tests.
Embodiment
Embodiment 1
A kind of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, wherein the baking vanish includes: the water of 20 mass parts
Property polyester resin, the water-based acrylic resin of 15 mass parts, methacrylic acid β-ethoxy ethyl ester of 5 mass parts, 0.1 mass parts
Anti-graffiti surface modifier and 0.1 mass parts polytetrafluoroethylwax wax water-borne dispersions.
In above scheme, the glass transition temperature of the methacrylic acid β-ethoxy ethyl ester is 45 DEG C.
In above scheme, which further includes the methyl etherified high imino group melamine resin and 1 mass parts of 5 mass parts
HMMM resin, wherein the methyl etherified high imino group melamine resin be cyanogen spy CYMEL
325, the HMMM resin is cyanogen spy CYMEL 303LF.
In above scheme, which further includes the neutralizer of 0.5 mass parts, the wetting agent of 0.1 mass parts, 0.1 mass parts
Defoaming agent, the butyl glycol ethers of 1 mass parts, 30 mass parts phthalocyanine blue slurry and 10 mass parts titanium dioxide slurry, wherein the titanium
It is 70% that white slurry, which is mass fraction,.
Preparation method:
Step 1: by aqueous polyester resin, water-based acrylic resin, neutralizer, butyl glycol ether, ethyl alcohol, deionized water,
In methyl etherified high imino group melamine resin and HMMM resin investment reaction kettle, in 800r/min
~1000r/min revolving speed carries out the dispersion stirring min of 5min~10；
Step 2: methacrylic acid β-ethoxy ethyl ester is added into the reaction kettle, in 800r/min~1000r/
Min revolving speed carries out dispersion stirring 5min~10min.
Step 3: under the speed stirring condition of 800-1000r/min, sequentially add wetting agent, phthalocyanine blue slurry, titanium dioxide slurry,
Anti-graffiti surface modifier and defoaming agent stir 15min~20min under 500r/min~700r/min revolving speed.
Embodiment 2
A kind of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, wherein the baking vanish includes: the water of 30 mass parts
Property polyester resin, the water-based acrylic resin of 125 mass parts, methacrylic acid β-ethoxy ethyl ester of 10 mass parts, 1 mass parts
Anti-graffiti surface modifier and 1 mass parts polytetrafluoroethylwax wax water-borne dispersions.
In above scheme, the glass transition temperature of the methacrylic acid β-ethoxy ethyl ester is 55 DEG C.
In above scheme, which further includes the methyl etherified high imino group melamine resin and 6 mass of 510 mass parts
The HMMM resin of part, wherein the methyl etherified high imino group melamine resin is cyanogen spy CYMEL
325, the HMMM resin is cyanogen spy CYMEL 303LF.
In above scheme, which further includes the neutralizer of 2 mass parts, the wetting agent of 0.5 mass parts, 0.3 mass parts
Defoaming agent, the butyl glycol ether of 5 mass parts, 40 mass parts phthalocyanine blue slurry and 15 mass parts titanium dioxide slurry, wherein the titanium white
It is 70% that slurry, which is mass fraction,.
Preparation method:
Step 1: by aqueous polyester resin, water-based acrylic resin, neutralizer, butyl glycol ether, ethyl alcohol, deionized water,
In methyl etherified high imino group melamine resin and HMMM resin investment reaction kettle, in 800r/min
~1000r/min revolving speed carries out the dispersion stirring min of 5min~10；
Step 2: methacrylic acid β-ethoxy ethyl ester is added into the reaction kettle, in 800r/min~1000r/
Min revolving speed carries out dispersion stirring 5min~10min.
Step 3: under the speed stirring condition of 800-1000r/min, sequentially add wetting agent, phthalocyanine blue slurry, titanium dioxide slurry,
Anti-graffiti surface modifier and defoaming agent stir 15min~20min under 500r/min~700r/min revolving speed.
Embodiment 3
A kind of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, wherein the baking vanish includes: the water of 25 mass parts
Property polyester resin, the water-based acrylic resin of 20 mass parts, methacrylic acid β-ethoxy ethyl ester of 7 mass parts, 0.5 mass parts
Anti-graffiti surface modifier and 0.7 mass parts polytetrafluoroethylwax wax water-borne dispersions.
In above scheme, the glass transition temperature of the methacrylic acid β-ethoxy ethyl ester is 48.9 DEG C.
In above scheme, which further includes the methyl etherified high imino group melamine resin and 4 mass parts of 7 mass parts
HMMM resin, wherein the methyl etherified high imino group melamine resin be cyanogen spy CYMEL
325, the HMMM resin is cyanogen spy CYMEL 303LF.
In above scheme, which further includes the neutralizer of 1.6 mass parts, the wetting agent of 0.3 mass parts, 0.2 mass parts
Defoaming agent, the butyl glycol ethers of 3 mass parts, 35 mass parts phthalocyanine blue slurry and 14 mass parts titanium dioxide slurry, wherein the titanium
It is 70% that white slurry, which is mass fraction,.
Preparation method:
Step 1: by aqueous polyester resin, water-based acrylic resin, neutralizer, butyl glycol ether, ethyl alcohol, deionized water,
In methyl etherified high imino group melamine resin and HMMM resin investment reaction kettle, in 800r/min
~1000r/min revolving speed carries out the dispersion stirring min of 5min~10；
Step 2: methacrylic acid β-ethoxy ethyl ester is added into the reaction kettle, in 800r/min~1000r/
Min revolving speed carries out dispersion stirring 5min~10min.
Step 3: under the speed stirring condition of 800-1000r/min, sequentially add wetting agent, phthalocyanine blue slurry, titanium dioxide slurry,
Anti-graffiti surface modifier and defoaming agent stir 15min~20min under 500r/min~700r/min revolving speed.
Embodiment 4
A kind of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, wherein the baking vanish includes: the water of 27 mass parts
Property polyester resin, the water-based acrylic resin of 19 mass parts, methacrylic acid β-ethoxy ethyl ester of 6 mass parts, 0.8 mass parts
Anti-graffiti surface modifier and 0.3 mass parts polytetrafluoroethylwax wax water-borne dispersions.
In above scheme, the glass transition temperature of the methacrylic acid β-ethoxy ethyl ester is 50 DEG C.
In above scheme, which further includes the methyl etherified high imino group melamine resin and 3 mass parts of 8 mass parts
HMMM resin, wherein the methyl etherified high imino group melamine resin be cyanogen spy CYMEL
325, the HMMM resin is cyanogen spy CYMEL 303LF.
In above scheme, which further includes the neutralizer of 0.9 mass parts, the wetting agent of 0.2 mass parts, 0.2 mass parts
Defoaming agent, the butyl glycol ethers of 3 mass parts, 36 mass parts phthalocyanine blue slurry and 11 mass parts titanium dioxide slurry, wherein the titanium
It is 70% that white slurry, which is mass fraction,.
Preparation method:
Step 1: by aqueous polyester resin, water-based acrylic resin, neutralizer, butyl glycol ether, ethyl alcohol, deionized water,
In methyl etherified high imino group melamine resin and HMMM resin investment reaction kettle, in 800r/min
~1000r/min revolving speed carries out the dispersion stirring min of 5min~10；
Step 2: methacrylic acid β-ethoxy ethyl ester is added into the reaction kettle, in 800r/min~1000r/
Min revolving speed carries out dispersion stirring 5min~10min.
Step 3: under the speed stirring condition of 800-1000r/min, sequentially add wetting agent, phthalocyanine blue slurry, titanium dioxide slurry,
Anti-graffiti surface modifier and defoaming agent stir 15min~20min under 500r/min~700r/min revolving speed.
Comparative example 1
A kind of baking vanish, which is characterized in that including following component according to the mass fraction: water-based hydroxyl acrylic acid dispersion 15
~30 parts, 10~25 parts of anion pp acid dispersion, 5~15 parts of aqueous aliphatic isocyanates, 15~55 parts of pigments and fillers,
6~19 parts and 10~0 parts of deionized water of auxiliary agent.
With the aqueous amino-stoving varnish of resistance to acid and alkali and soil resistance, solid content 46 described in above-mentioned fact Example 1-4
± 1, (60 °) of glossiness of the paint film of the aqueous amino-stoving varnish are 90, and resistance to MEK cleans achievable 200 times and wipes without obvious
Wound.
The aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance being prepared in above-described embodiment 1-4 and comparative example 1
Characterization test the results are shown in Table 1, it can be seen that use the aqueous ammonia of the present invention with resistance to acid and alkali and soil resistance
Base baking vanish has the advantages that excellent acid resistance, alkali resistance, impact resistance, weatherability and stain resistance.
Table 1
Without departing substantially from the scope or spirit of the invention, the specific embodiment of description of the invention can be done more
Kind improvements and changes, this will be apparent to those skilled in the art.Other realities obtained by specification of the invention
Applying mode for technical personnel is apparent obtain.Present specification and embodiment are merely exemplary.
Claims (9)
1. a kind of aqueous amino-stoving varnish with resistance to acid and alkali and soil resistance, wherein the baking vanish includes: the water of 20~30 mass parts
Property polyester resin, the water-based acrylic resin of 15~25 mass parts, 5~10 mass parts methacrylic acid β-ethoxy ethyl ester,
The anti-graffiti surface modifier of 0.1~1 mass parts and the polytetrafluoroethylwax wax water-borne dispersions of 0.1~1 mass parts.
2. the aqueous amino-stoving varnish according to claim 1 with resistance to acid and alkali and soil resistance, wherein the metering system
The glass transition temperature of sour β-ethoxy ethyl ester is 45 DEG C~55 DEG C.
3. the aqueous amino-stoving varnish according to claim 1 with resistance to acid and alkali and soil resistance, wherein the baking vanish further includes
The hexamethoxymethyl melamine tree of the methyl etherified high imino group melamine resin and 1~6 mass parts of 5~10 mass parts
Rouge.
4. the aqueous amino-stoving varnish according to claim 3 with resistance to acid and alkali and soil resistance, wherein described methyl etherified
High imino group melamine resin is cyanogen spy CYMEL 325, and the HMMM resin is cyanogen spy CYMEL
303LF。
5. the aqueous amino-stoving varnish according to claim 4 with resistance to acid and alkali and soil resistance, wherein the baking vanish further includes
The neutralizer of 0.5~2 mass parts, the wetting agent of 0.1~0.5 mass parts, the defoaming agent of 0.1~0.3 mass parts, 1~5 mass parts
Butyl glycol ether, 30~40 mass parts phthalocyanine blue slurry and 10~15 mass parts titanium dioxide slurry.
6. the aqueous amino-stoving varnish according to claim 5 with resistance to acid and alkali and soil resistance, wherein the titanium dioxide slurry is
Mass fraction is 70%.
7. the aqueous amino-stoving varnish according to claim 1 with resistance to acid and alkali and soil resistance, wherein the anti-graffiti table
Face auxiliary agent is Bi Ke chemical coating surfactant B YK-SILCLEAN 3720.
8. a kind of system of the aqueous amino-stoving varnish according to any one of claims 1 to 7 with resistance to acid and alkali and soil resistance
Preparation Method comprising following steps:
Step 1: by aqueous polyester resin, water-based acrylic resin, neutralizer, butyl glycol ether, ethyl alcohol, deionized water, methyl
Be etherified high imino group melamine resin and HMMM resin investment reaction kettle in, 800r/min~
1000r/min revolving speed carries out dispersion stirring 5min~10min；
Step 2: sequentially adding wetting agent, phthalocyanine blue slurry, titanium dioxide slurry, anti-painting under the speed stirring condition of 800-1000r/min
Crow surface modifier and defoaming agent stir the min of 15min~20 under 500r/min~700r/min revolving speed.
9. the preparation method of the aqueous amino-stoving varnish according to claim 8 with resistance to acid and alkali and soil resistance, described
Between step 1 and the step 2 further include:
Methacrylic acid β-ethoxy ethyl ester is added into the reaction kettle, is divided in 800r/min~1000r/min revolving speed
Dissipate stirring 5min~10min.
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Application publication date: 20190423 |