CN109852183A - A kind of preparation method of coating aluminium alloy water soluble acrylic acid amino baking purple paint - Google Patents
A kind of preparation method of coating aluminium alloy water soluble acrylic acid amino baking purple paint Download PDFInfo
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- CN109852183A CN109852183A CN201910031228.XA CN201910031228A CN109852183A CN 109852183 A CN109852183 A CN 109852183A CN 201910031228 A CN201910031228 A CN 201910031228A CN 109852183 A CN109852183 A CN 109852183A
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Abstract
The present invention relates to a kind of preparation methods of coating aluminium alloy water soluble acrylic acid amino baking purple paint, the following steps are included: first synthesizing a kind of water based acrylic resin WR. step are as follows: the monomer for participating in polymerization and initiator is added to enter dropping tank, it is uniformly mixed, solubilizer enters reaction kettle, open stirring, it is passed through nitrogen, it is heated to reaction temperature, the mixture of dropping tank is added dropwise, drips off within a certain period of time, heat preservation a period of time, initiator is added, is dripped off in certain time, heat preservation a period of time, cooling, discharging.Water based acrylic resin WR investment with paint cylinder, neutralizer and water is added, high-speed stirred is for a period of time, pH value is adjusted, adds amino resins, aqueous purple slurry respectively under high velocity agitation according still further to certain ratio, defoaming agent, levelling agent, wetting agent and dispersing agent enter with paint cylinder, and high-speed stirred is for a period of time, add solvent and water, high-speed stirred for a period of time, after sample detection fineness and viscosity qualification, is packed.
Description
Technical field
The present invention relates to a kind of preparation methods of coating aluminium alloy water soluble acrylic acid amino baking purple paint, belong to macromolecule
The synthesis technical field of organic compound.
Technical background
Water paint advantage: first, with water as solvent, saves vast resources；Fire risk when eliminating construction；It reduces
To atmosphere pollution；Only with a small amount of hypotoxicity alcohol ethers organic solvent, operating environmental condition is improved.General water paint has
Between 15%~15%, the second water paint can be coated directly in wet structure and wet environment and be applied solvent (accounting for coating)
Work；Good to material surface adaptability, coating adhesion is strong.Third coating tool can wash by water, and greatly reduce cleaning solvent
Consumption.So the dosage of water paint is increasing, wherein the most outstanding is water soluble acrylic acid amino-stoving varnish, dosage is increasingly
Greatly, it is mainly used for coating coiled material, metal bucket, electric vehicle, motorcycle, automobile, automotive oil tank, mechanical equipment, stainless steel door, aluminium alloy
Door and window, plastic components and steel structure component etc..
The water resistance and salt fog resistance of water soluble acrylic acid amino-stoving varnish are far superior to water alcohol acid amino-stoving varnish and aqueous poly-
Ester amino-stoving varnish, adhesive force is not so good when water soluble acrylic acid amino-stoving varnish coating aluminium alloy part currently on the market, and the present invention matches
The water soluble acrylic acid amino-stoving varnish of system uses homemade water-based acrylic resin, hardness excellent to aluminium alloy part adhesive force, punching
Hitting property, the performances such as flexibility are also excellent.
The present invention relates to a kind of preparation methods of coating aluminium alloy water soluble acrylic acid amino baking purple paint, including following step
It is rapid:
(1) a kind of water based acrylic resin WR, step are first synthesized are as follows: the monomer for participating in polymerization and initiator is added to enter to be added dropwise
Tank is uniformly mixed, and solubilizer enters reaction kettle, is opened stirring, is passed through nitrogen, is heated to reaction temperature, and the mixed of dropping tank is added dropwise
Object is closed, is dripped off within a certain period of time, heat preservation a period of time, initiator is added, is dripped off in certain time, heat preservation a period of time, drop
Temperature, discharging.
(2) neutralizer and a small amount of water is added with paint cylinder in water based acrylic resin WR investment, adjusts pH value, high speed
Stirring a period of time.
(3) add amino resins, defoaming agent, levelling agent, wetting agent, dispersion respectively under high velocity agitation according to a certain percentage
Agent and aqueous purple are starched into paint cylinder, and high-speed stirred for a period of time, adds solvent and water, high-speed stirred is for a period of time.
(4) after sample detection fineness and viscosity are qualified, packaging.
Preferably, the solid content of water based acrylic resin WR is 90% to 95% in the step (1), and viscosity is
Centipoise/25 degree 7000-10000 (rotational viscometer), hydroxyl value are 70-80mgKOH/g(100% solid content).
Preferably, the acid value of water based acrylic resin WR is that 50-60KOH/g(100% solid contains in the step (1)
Amount).
Specific embodiment
Preparation below with reference to embodiment to a kind of coating aluminium alloy water soluble acrylic acid amino baking purple paint of the invention
Method is further described.It is understood that specific embodiment described herein is used only for explaining related invention, and
The non-restriction to the invention.
Embodiment 1
(1) a kind of water based acrylic resin WR, step are first synthesized are as follows: first 5 grams of acrylic acid, 2 grams of methacrylic acids, 18 grams
Hydroxypropyl acrylate, 13 grams of styrene, 15 grams of butyl acrylates, 40 grams of butyl methacrylates, 8 grams of dibenzoyl peroxides add
Enter dropping tank, is uniformly mixed.Add 10 grams of isobutanols to enter reaction kettle, open stirring, be passed through nitrogen, be heated to 90-93 degree, is added dropwise
The mixture of dropping tank drips off for 4 hours, keeps the temperature 3 hours in 90-93 degree, 2 grams of dibenzoyl peroxides is added, in 90-93 degree
Heat preservation 5 hours cools down, discharging.
(2) 60 grams of water based acrylic resin WR investments are opened high-speed stirred, 5 grams of dimethyl ethanols is added with paint cylinder
Amine and 1 gram of water, adjustment pH value are 8.5-8.8, are continued high-speed stirred 30 minutes.
(3) plus 13 grams of solid contents be 80% 325,0.3 gram of amino resins cyanogen spy, 270,0.4 gram of Digao Digao 902W, 0.2
Gram 450,0.3 gram of 755 and 13 grams of aqueous purple of Digao are starched into paint cylinder, and high-speed stirred 0.5 hour, then plus 12 grams DBE and 50 gram
Water enters with paint cylinder, 1 hour of high-speed stirred
(4) for sample detection fineness less than 50 microns, water use regulation viscosity is packaging behind centipoise/25 degree 1800-2300.
Embodiment 2
(1) a kind of water based acrylic resin WR, step are first synthesized are as follows: first 7 grams of acrylic acid, 12 grams of vinyl acetates, 21 grams
Methyl methacrylate, 18 grams of hydroxypropyl acrylates, 17 grams of butyl acrylates, 23 grams of butyl methacrylates, 6 grams of benzoyl peroxides
Dropping tank is added in penta butyl ester of formic acid, is uniformly mixed.Add 8 grams of isobutanols and 2 grams enter ethylene glycol monobutyl ether and enter reaction kettle, opens and stir
It mixes, is passed through nitrogen, be heated to 110-115 degree, the mixture of dropping tank is added dropwise, drip off within 6 hours, it is small in the heat preservation 2 of 110-115 degree
When, 0.5 gram of peroxidized t-butyl perbenzoate is added, 6 hours is kept the temperature in 110-115 degree, cools down, discharging.
(2) 65 grams of water based acrylic resin WR investments are added 5 grams of triethylamines and 0.5 gram of water, adjusted with paint cylinder
PH value is 7.6-7.8, high-speed stirred 30 minutes.
(3) plus 15 grams of solid contents be 80% amino resins 5717,0.3 gram of three wood, 270,0.3 gram of Digao Digao 902W, 0.2
Gram 450,0.3 gram of 755 and 13 grams of aqueous purple of Digao are starched into paint cylinder, and high-speed stirred 0.5 hour, then plus 8 grams of DBE and 45 gram of water
Enter with paint cylinder, 1 hour of high-speed stirred
(4) for sample detection fineness less than 50 microns, water use regulation viscosity is packaging behind centipoise/25 degree 1800-2300.
Embodiment 3
(1) a kind of water based acrylic resin WR, step are first synthesized are as follows: first 7 grams of acrylic acid, 5 grams of vinyl acetates, 25 grams of first
Base methyl acrylate, 18 grams of hydroxypropyl acrylates, 24 grams of butyl acrylates, 18 grams of butyl methacrylates, 6 grams of benzoyl peroxide first
Dropping tank is added in tert-butyl acrylate, is uniformly mixed.Add 10 grams to enter ethylene glycol monobutyl ether and enter reaction kettle, opens stirring, be passed through nitrogen,
It is heated to 110-115 degree, the mixture of dropping tank is added dropwise, is dripped off within 5 hours, 4 hours is kept the temperature in 110-115 degree, adds 0.5 gram of mistake
T-butyl perbenzoate is aoxidized, 6 hours is kept the temperature in 110-115 degree, cools down, discharging.
(2) 65 grams of water based acrylic resin WR investments are added 5 grams of triethylamines and 0.5 gram of water, adjust PH with paint cylinder
Being worth is 7.6-7.8, high-speed stirred 30 minutes.
(3) plus 14 grams of solid contents be 80% amino resins 5717,0.3 gram of three wood, 270,0.3 gram of Digao Digao 902W, 0.2
Gram 450,0.3 gram of 755 and 13 grams of aqueous purple of Digao are starched into paint cylinder, and high-speed stirred 0.5 hour, then plus 13 grams of ethylene glycol list first
Ether and 30 grams of water enter with paint cylinder, 1 hour of high-speed stirred
(4) for sample detection fineness less than 50 microns, water use regulation viscosity is packaging behind centipoise/25 degree 1800-2300.
Embodiment 4
(1) a kind of water based acrylic resin WR, step are first synthesized are as follows: first 3 grams of methacrylic acids, 4 grams of methacrylic acids,
5 grams of methacrylic acid norbornene esters, 5 grams of methyl methacrylates, 19 grams of hydroxy-ethyl acrylates, 21 grams of butyl acrylates, 33 grams of first
Base butyl acrylate, 8 grams of peroxidized t-butyl perbenzoates are added dropping tank, are uniformly mixed.11 grams are added to enter propyleneglycol monobutyl
Ether enters reaction kettle, opens stirring, is passed through nitrogen, is heated to 145-150 degree, and the mixture of dropping tank is added dropwise, and drips off within 4 hours,
145-150 degree keeps the temperature 2 hours, adds 0.5 gram of peroxidized t-butyl perbenzoate, keeps the temperature 6 hours in 130-135 degree, cooling, out
Material.
(2) 65 grams of water based acrylic resin WR investments are added 5.5 grams of triethylamines and 0.5 gram of water, adjusted with paint cylinder
PH value is 7.8-8.3, high-speed stirred 30 minutes.
(3) plus 13 grams of solid contents be 80% amino resins 5717,0.2 gram of three wood, 270,0.2 gram of Digao Digao 902W, 0.2
Gram 450,0.3 gram of 755 and 13 grams of aqueous purple of Digao are starched into paint cylinder, and high-speed stirred 0.5 hour, then plus 18 grams of ethylene glycol list first
Ether and 30 grams of water, which enter to match, paints cylinder, and high-speed stirred 1 hour.
(4) for sample detection fineness less than 50 microns, water use regulation viscosity is packaging behind centipoise/25 degree 1800-2300.
The performance (95 degree of baking temperature, 30 minutes, 20 microns of film thickness) of 4 example baking vanish
| Baking vanish number | Example 1 | Example 2 | Example 3 | Example 4 | |
| Hardness | 2H | 2H | 2H | 2H | |
| Gloss (60 degree of glossometers | 90-92 | 92-94 | 91-93 | 92-94 | |
| Richness | It is good | It is good | It is good | It is good | |
| Bubble 240 hours | It is not blistering, it does not fall off | It is not blistering, it does not fall off | It is not blistering, it does not fall off | It is not blistering, it does not fall off | |
| Salt spray resistance 300 hours | Pass through | Pass through | Pass through | Pass through | |
| UV machine shines 300 hours | Pass through | Pass through | Pass through | Pass through | |
| Adhesive force (baige method) | Pass through | Pass through | Pass through | Pass through | |
| Recoil hits 50 centimetres kilograms | Pass through | Pass through | Pass through | Pass through | |
| Flexibility | 0 grade | 0 grade | 0 grade | 0 grade |
Although the present invention has described it in detail and cited embodiments, but for those of ordinary skill in the art, it is clear that can
With various schemes, modification and the change made as specified above, should be construed as being included within the scope of the claims.
Claims (4)
1. the present invention relates to a kind of preparation method of coating aluminium alloy water soluble acrylic acid amino baking purple paint, including following step
It is rapid:
(1) a kind of water based acrylic resin WR, step are first synthesized are as follows: the monomer for participating in polymerization and initiator is added to enter to be added dropwise
Tank is uniformly mixed, and solubilizer enters reaction kettle, is opened stirring, is passed through nitrogen, is heated to reaction temperature, and the mixed of dropping tank is added dropwise
Object is closed, is dripped off within a certain period of time, heat preservation a period of time, initiator is added, is dripped off in certain time, heat preservation a period of time, drop
Temperature, discharging；
(2) neutralizer and a small amount of water is added with paint cylinder in water based acrylic resin WR investment, adjusts pH value, high-speed stirred
For a period of time；
(3) according to a certain percentage under high velocity agitation respectively plus amino resins, defoaming agent, levelling agent, wetting agent, dispersing agent and
Aqueous purple is starched into paint cylinder, and high-speed stirred for a period of time, adds solvent and water, high-speed stirred is for a period of time；
(4) after sample detection fineness and viscosity are qualified, packaging.
2. according to preparation method described in right 1, which is characterized in that water based acrylic resin WR in the step (1)
Solid content is 90% to 95%, and viscosity is centipoise/25 degree 7000-10000 (rotational viscometer), hydroxyl value 70-80mgKOH/g
(100% solid content), acid value are 50-60KOH/g(100% solid content).
3. according to preparation method described in right 1, which is characterized in that water based acrylic resin WR in the step (1)
Acid value is 50-60KOH/g(100% solid content).
4. the coating aluminium alloy water soluble acrylic acid amino obtained according to preparation method described in any one described in right 1 and 3
Toast purple paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031228.XA CN109852183A (en) | 2019-01-14 | 2019-01-14 | A kind of preparation method of coating aluminium alloy water soluble acrylic acid amino baking purple paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031228.XA CN109852183A (en) | 2019-01-14 | 2019-01-14 | A kind of preparation method of coating aluminium alloy water soluble acrylic acid amino baking purple paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109852183A true CN109852183A (en) | 2019-06-07 |
Family
ID=66894637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910031228.XA Withdrawn CN109852183A (en) | 2019-01-14 | 2019-01-14 | A kind of preparation method of coating aluminium alloy water soluble acrylic acid amino baking purple paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109852183A (en) |
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2019
- 2019-01-14 CN CN201910031228.XA patent/CN109852183A/en not_active Withdrawn
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Application publication date: 20190607 |
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