CN106566362A - Hard and saponified automobile leaf spring coating and preparation method thereof - Google Patents
Hard and saponified automobile leaf spring coating and preparation method thereof Download PDFInfo
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- CN106566362A CN106566362A CN201610905397.8A CN201610905397A CN106566362A CN 106566362 A CN106566362 A CN 106566362A CN 201610905397 A CN201610905397 A CN 201610905397A CN 106566362 A CN106566362 A CN 106566362A
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- 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
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
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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
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/53—Core-shell polymer
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- Engineering & Computer Science (AREA)
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- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses a hard and saponified automobile leaf spring coating. The coating is prepared from raw materials in parts by weight as follows: 2-3 parts of calcium stearate, 0.6-1 part of 1,2-dimethylimidazole, 0.1-0.3 parts of lithium naphthenate, 2-3 parts of calcium superphosphate, 3-4 parts of polyvinylpyrrolidone, 1-2 parts of di-iso-decylphthalate, 7-9 parts of hydroxyethyl methylacrylate, 0.8-1 part of phosphorus pentoxide, 2-3 parts of p-methoxyphenol, 0.6-2 parts of tetrabutylammonium bromide, 17-20 parts of acrylic acid, 6-8 parts of methyl methacrylate, 140-150 parts of epoxy resin E-51, 0.07-0.1 parts of ammonium persulfate, 2-3 parts of sodium bicarbonate, 0.6-1 part of sodium dodecyl benzene sulfonate, 0.1-0.2 parts of stannous mono-sulphate, 1-1.6 parts of fatty acid diethanol amide, 0.8-2 parts of oxystearic acid and 1-2 parts of sodium myrastate. The coating is low in cost, and the problems that automobile leaf spring coatings are large in landing amount, not environment-friendly and poor in anti-rust capability at the present stage are solved.
Description
Technical field
The present invention relates to anticorrosive coating technical field, more particularly to a kind of hard saponification automobile leaf spring coating and its
Preparation method.
Background technology
Acrylic monomerss are often used in the polymerization process of water-borne acrylic resin, due to the hydrophilic carboxylic on acrylic acid
The presence of base so that polymer emulsion stability strengthens, and under conditions of dry film, carboxyl can closely stick to one with ground
Rise, substantially increase the adhesive force for applying interlayer；But in wet environment, due to the carboxylated hydrophilic on acrylic acid, between water
Association it is very strong, hydrone is entered in the interface of coating and metal easily by capillary attraction, causes carboxyl with gold
The active force of category substrate surface is substantially reduced, and dampness adhesive force is performed poor, and resistance to water is reduced, and can consequently also affect film
Antiseptic property.Function phosphate ester monomer is the mixture of phosphate monoester, di-phosphate ester and a small amount of phosphoric acid；Phosphate monoester can be with
Metal base reacts and generates phosphate monoester iron salt, forms fine and close protecting film, and this all phosphate ester is just securely connected
To on base material, so as to improve the adhesive force of film；
In recent years, because special effect of the function phosphate ester in terms of film rustless property and anti-flash rusting is improved so that he is increasingly
It is taken seriously, as increasing R＆D worker begins one's study its application in water soluble acrylic acid anticorrosive paint.By its
The Corrosion Protection improved as additive is obvious, and operating process is simple, convenient, has become water-based anticorrosive paint from now on
One important development direction of research；
However, feature phosphate ester monomer mostly is import, costly, technique prepared by phosphate ester monomer is complex for price,
Domestic fewer to its building-up process systematic research, these unfavorable factors have limited to phosphate ester in water soluble acrylic acid anticorrosive paint
In application development.But more excellent, the less expensive phosphate ester of volatility is made slow progress, so, simplify the preparation technology of phosphate ester
And as far as possible the utilization rate of raising function phosphate ester monomer becomes current practicable method；Epoxy resin is to acrylic resin
Modified hardness and resistance to water to paint film increase significantly；
The modified rustless property that can efficiently improve paint film of the phosphate ester function monomer to acrylic resin, and operate letter
Just.Because current fluorine-containing emulsifier and fluorine monomer are expensive, grafting efficiency is low.The present invention considers automobile leaf spring application
Particular/special requirement, adopt phosphate ester monomer and the monomer modified acrylic resin of epoxy acrylic for matrix resin；
The coating process of automobile leaf spring is：One by one leaf spring carries out application, and then assembly is locked together is carried out again
Application.If applying thickness, during locking together, the coating between two spring leafs will be squeezed out, or even destruction is applied
Layer.If coating is too thin, general coating rustless property is poor, is not enough to protect automobile leaf spring piece, and this is accomplished by obtained
Possess rustless property as high as possible in the case that coating material coating is relatively thin.At present both at home and abroad the coating of automobile leaf spring compared with
Thickness, the destruction of too thick extruding during more or less presence coating assembly, can further become corrosion point, sternly at these destructions
The quality of the impact automobile leaf spring coating of weight, the rust-preventing characteristic that unit thickness coating is improved as far as possible is increasingly becoming urgent need solution
A difficult problem certainly.Then, the present invention is modified with epoxy resin using acrylic resin as matrix resin to it, and this just makes
Obtain coating material and both there is epoxy resin excellent antiseptic property, adhesive force, and with the excellent chemical-resistant of acrylic resin
And pliability, greatly improve the rustless property of unit thickness coating.
The content of the invention
The object of the invention is exactly to make up the defect of prior art, there is provided a kind of hard saponification automobile leaf spring coating
And preparation method thereof.
The present invention is achieved by the following technical solutions：
A kind of hard saponification automobile leaf spring coating, it is made up of the raw material of following weight parts：
Calcium stearate 2-3,1,2- methylimidazole 0.6-1, aphthenic acids lithium 0.1-0.3, calcium superphosphate 2-3, polyvinylpyrrolidine
Ketone 3-4, diisooctyl phthalate 1-2, hydroxyethyl methylacrylate 7-9, phosphorus pentoxide 0.8-1, p methoxy phenol
2-3, tetrabutyl ammonium bromide 0.6-2, acrylic acid 17-20, methyl methacrylate 6-8, epoxy resin E-51140-150, over cure
Sour ammonium 0.07-0.1, sodium bicarbonate 2-3, dodecylbenzene sodium sulfonate 0.6-1, stannous sulfate 0.1-0.2, fatty acid diethanol acyl
Amine 1-1.6, hydroxy stearic acid 0.8-2, myristic acid soda soap 1-2.
A kind of preparation method of described hard saponification automobile leaf spring coating, comprises the following steps：
（1）Above-mentioned diisooctyl phthalate is added in the dehydrated alcohol of its weight 6-9 times, liter high-temperature is 70-76
DEG C, insulated and stirred 10-14 minute, above-mentioned stannous sulfate is added, stir to room temperature, obtain alcohol ester solution；
（2）The 65-70% of above-mentioned p methoxy phenol weight is taken, is mixed with above-mentioned hydroxyethyl methylacrylate, warming temperature is
30-35 DEG C, 1000-1200 rev/min of lower insulated and stirred 10-13 minute, above-mentioned phosphorus pentoxide is added, liter high-temperature is 70-75
DEG C, insulated and stirred 100-120 minute, the water of mixed system weight 4-6% is added, in sending into 87-90 DEG C of water bath with thermostatic control, add
Above-mentioned alcohol ester solution, insulated and stirred 2.7-3 hour, discharging cooling obtains hydroxyl phosphate；
（3）Above-mentioned tetrabutyl ammonium bromide, remaining p methoxy phenol are mixed, in being added to aforesaid propylene acid, are stirred,
Obtain acrylic dispersions；
（4）Above-mentioned 1,2- methylimidazoles are added in the dehydrated alcohol of its weight 4-7 times, are stirred, add stearic acid
Calcium, the insulated and stirred 10-20 minute at 70-80 DEG C, adds above-mentioned aphthenic acids lithium, stirs to room temperature, obtains alcohol dispersion liquid；
（5）Above-mentioned epoxy resin E-51 is taken, in being sent to 100-110 DEG C of oil bath, Deca aforesaid propylene acid dispersion liquid, insulation is stirred
3-4 hours are mixed, above-mentioned alcohol dispersion liquid is added, is stirred to room temperature, obtain epoxy acrylic ester monomer；
（6）Above-mentioned myristic acid soda soap, epoxy acrylic ester monomer, methyl methacrylate, dodecylbenzene sodium sulfonate are mixed
Close, in being added to the deionized water of compound weight 6-9 times, add above-mentioned fatty diglycollic amide, be incubated at 57-60 DEG C
Stirring 20-30 minutes, obtain pre-emulsion；
（7）Above-mentioned sodium bicarbonate is added in the deionized water of its weight 18-20 times, is stirred at 70-75 DEG C, added
Above-mentioned Ammonium persulfate., it is 80-85 DEG C to rise high-temperature, and Deca above-mentioned pre-emulsion adds above-mentioned hydroxyl phosphate after completion of dropping, after
Continuous insulated and stirred 50-60 minute, it is 60-65 DEG C to reduce temperature, is incubated 30-40 minutes, adds remaining each raw material, is stirred,
Regulation pH is 6-7, is ground to fineness less than 50 μm, is obtained final product.
It is an advantage of the invention that：
Using method：Using it is front by the present invention coating mix with the firming agent of Anquamine 2771 of its weight 20-30%,
Stir, you can carry out application；
The epoxy radicals of epoxy acrylate are fixed on the stratum nucleare of nucleocapsid structure by the present invention by the method for core-shell emulsion polymerization,
Methacrylic acid is poly- in emulsion as the hydrophilic crosslinked dose of outer layer for being fixed on core-shell latex particles, the wherein carboxyl on methacrylic acid
First with organic amine and closing during conjunction so that the initial ring that emulsion will not be too early during polymerization and storage
The reaction of epoxide and carboxyl, with moisture evaporation, emulsion particle particle contact, piles up, deforms, subsiding, and polymer macromolecule is obtained
Sufficiently mixing, but with the volatilization of organic amine, increasing carboxyl is unsealed, in the epoxy radicals being distributed across in different layers
Meet with carboxyl and there occurs cross-linking reaction, constitute the cross-linking system of the self-crossing emulsion of the present invention, the degree of cross linking of paint film and cause
Close property is greatly improved；
The phosphate ester monomer that can form complex with metallic surface containing a large amount of phosphorus hydroxyls is incorporated into acrylic acid by the present invention
In ester emulsion, phosphorus hydroxyl has stronger chelation with metal surface in phosphate ester monomer, can act on being formed with polyvalent metal
Phosphate complex, and polymer is strongly attached on metal base in the form of covalent bond, wet adhesion is significantly improved,
Substantial amounts of phosphorus hydroxyl is distributed in the shell of core-shell emulsion, and the phosphorus hydroxyl of shell can be contacted, prevented the very first time with metal surface
The appearance of " dodging erosion " phenomenon so that emulsion has the function of similar phosphorization, both eliminates phosphorus for automobile leaf spring coating
Change and process this procedure, will not produce etching waste liquor again and pollute environment, reduce cost, solve automobile leaf spring coating
At this stage " landing amount " it is big, not environmentally, the problem of antirust ability difference；Myristic acid soda soap that the present invention is added etc. can be effective
Improve dispersibility of each filler in interlaminar resin, improve the stability of finished product film.
Specific embodiment
A kind of hard saponification automobile leaf spring coating, it is made up of the raw material of following weight parts：
The methylimidazole 0.6 of calcium stearate 2,1,2, aphthenic acids lithium 0.1, calcium superphosphate 2, polyvinylpyrrolidone 3, O-phthalic
Sour two isodecyl esters 1, hydroxyethyl methylacrylate 7, phosphorus pentoxide 0.8, p methoxy phenol 2, tetrabutyl ammonium bromide 0.6, third
Olefin(e) acid 17, methyl methacrylate 6, epoxy resin E-51 140, Ammonium persulfate. 0.07, sodium bicarbonate 2, DBSA
Sodium 0.6, stannous sulfate 0.1, fatty diglycollic amide 1, hydroxy stearic acid 0.8, myristic acid soda soap 1.
A kind of preparation method of described hard saponification automobile leaf spring coating, comprises the following steps：
（1）Above-mentioned diisooctyl phthalate is added in the dehydrated alcohol of 6 times of its weight, it is 70 DEG C to rise high-temperature, is protected
Temperature stirring 10 minutes, adds above-mentioned stannous sulfate, stirs to room temperature, obtains alcohol ester solution；
（2）Take the 65% of above-mentioned p methoxy phenol weight, mix with above-mentioned hydroxyethyl methylacrylate, warming temperature be 30 DEG C,
1000 revs/min of lower insulated and stirred 10 minutes, add above-mentioned phosphorus pentoxide, and it is 70 DEG C to rise high-temperature, insulated and stirred 100 minutes,
The water of mixed system weight 4% is added, in sending into 87 DEG C of water bath with thermostatic control, the above-mentioned alcohol ester solution of addition, insulated and stirred 2.7 hours,
Discharging cooling, obtains hydroxyl phosphate；
（3）Above-mentioned tetrabutyl ammonium bromide, remaining p methoxy phenol are mixed, in being added to aforesaid propylene acid, are stirred,
Obtain acrylic dispersions；
（4）Above-mentioned 1,2 methylimidazole is added in the dehydrated alcohol of 4 times of its weight, is stirred, add calcium stearate,
Insulated and stirred 10 minutes at 70 DEG C, add above-mentioned aphthenic acids lithium, stir to room temperature, obtain alcohol dispersion liquid；
（5）Above-mentioned epoxy resin E is taken, in being sent to 100 DEG C of oil bath, Deca aforesaid propylene acid dispersion liquid, insulated and stirred 3 is little
When, above-mentioned alcohol dispersion liquid is added, stir to room temperature, obtain epoxy acrylic ester monomer；
（6）Above-mentioned myristic acid soda soap, epoxy acrylic ester monomer, methyl methacrylate, dodecylbenzene sodium sulfonate are mixed
Close, in being added to the deionized water of 6 times of compound weight, add above-mentioned fatty diglycollic amide, the insulated and stirred at 57 DEG C
20 minutes, obtain pre-emulsion；
（7）Above-mentioned sodium bicarbonate is added in the deionized water of 18 times of its weight, is stirred at 70 DEG C, add above-mentioned mistake
Ammonium sulfate, it is 80 DEG C to rise high-temperature, and Deca above-mentioned pre-emulsion adds above-mentioned hydroxyl phosphate after completion of dropping, continues insulation and stirs
Mix 50 minutes, it is 60 DEG C to reduce temperature, is incubated 30 minutes, adds remaining each raw material, is stirred, and it is 6 to adjust pH, is ground to thin
Degree is less than 50 μm, obtains final product.
Performance test：
Resistance to 3% saline 700h is unchanged；
1 grade of adhesive force, without " flash rusting "；
Impact resistance：≥50kg/cm；
Acid resistance：（25% sulphuric acid, 25 DEG C）：30d is unchanged；
Alkali resistance：（25% sodium hydroxide, 25 DEG C）：30d is unchanged.
Claims (2)
1. a kind of hard saponification automobile leaf spring coating, it is characterised in that it is made up of the raw material of following weight parts：
Calcium stearate 2-3,1,2- methylimidazole 0.6-1, aphthenic acids lithium 0.1-0.3, calcium superphosphate 2-3, polyvinylpyrrolidine
Ketone 3-4, diisooctyl phthalate 1-2, hydroxyethyl methylacrylate 7-9, phosphorus pentoxide 0.8-1, p methoxy phenol
2-3, tetrabutyl ammonium bromide 0.6-2, acrylic acid 17-20, methyl methacrylate 6-8, epoxy resin E-51140-150, over cure
Sour ammonium 0.07-0.1, sodium bicarbonate 2-3, dodecylbenzene sodium sulfonate 0.6-1, stannous sulfate 0.1-0.2, fatty acid diethanol acyl
Amine 1-1.6, hydroxy stearic acid 0.8-2, myristic acid soda soap 1-2.
2. a kind of preparation method of hard saponification automobile leaf spring coating as claimed in claim 1, it is characterised in that include
Following steps：
（1）Above-mentioned diisooctyl phthalate is added in the dehydrated alcohol of its weight 6-9 times, liter high-temperature is 70-76
DEG C, insulated and stirred 10-14 minute, above-mentioned stannous sulfate is added, stir to room temperature, obtain alcohol ester solution；
（2）The 65-70% of above-mentioned p methoxy phenol weight is taken, is mixed with above-mentioned hydroxyethyl methylacrylate, warming temperature is
30-35 DEG C, 1000-1200 rev/min of lower insulated and stirred 10-13 minute, above-mentioned phosphorus pentoxide is added, liter high-temperature is 70-75
DEG C, insulated and stirred 100-120 minute, the water of mixed system weight 4-6% is added, in sending into 87-90 DEG C of water bath with thermostatic control, add
Above-mentioned alcohol ester solution, insulated and stirred 2.7-3 hour, discharging cooling obtains hydroxyl phosphate；
（3）Above-mentioned tetrabutyl ammonium bromide, remaining p methoxy phenol are mixed, in being added to aforesaid propylene acid, are stirred,
Obtain acrylic dispersions；
（4）Above-mentioned 1,2- methylimidazoles are added in the dehydrated alcohol of its weight 4-7 times, are stirred, add stearic acid
Calcium, the insulated and stirred 10-20 minute at 70-80 DEG C, adds above-mentioned aphthenic acids lithium, stirs to room temperature, obtains alcohol dispersion liquid；
（5）Above-mentioned epoxy resin E-51 is taken, in being sent to 100-110 DEG C of oil bath, Deca aforesaid propylene acid dispersion liquid, insulation is stirred
3-4 hours are mixed, above-mentioned alcohol dispersion liquid is added, is stirred to room temperature, obtain epoxy acrylic ester monomer；
（6）Above-mentioned myristic acid soda soap, epoxy acrylic ester monomer, methyl methacrylate, dodecylbenzene sodium sulfonate are mixed
Close, in being added to the deionized water of compound weight 6-9 times, add above-mentioned fatty diglycollic amide, be incubated at 57-60 DEG C
Stirring 20-30 minutes, obtain pre-emulsion；
（7）Above-mentioned sodium bicarbonate is added in the deionized water of its weight 18-20 times, is stirred at 70-75 DEG C, added
Above-mentioned Ammonium persulfate., it is 80-85 DEG C to rise high-temperature, and Deca above-mentioned pre-emulsion adds above-mentioned hydroxyl phosphate after completion of dropping, after
Continuous insulated and stirred 50-60 minute, it is 60-65 DEG C to reduce temperature, is incubated 30-40 minutes, adds remaining each raw material, is stirred,
Regulation pH is 6-7, is ground to fineness less than 50 μm, is obtained final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610905397.8A CN106566362A (en) | 2016-10-17 | 2016-10-17 | Hard and saponified automobile leaf spring coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610905397.8A CN106566362A (en) | 2016-10-17 | 2016-10-17 | Hard and saponified automobile leaf spring coating and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312428A (en) * | 2017-07-24 | 2017-11-03 | 杨洁磊 | A kind of preparation method of hard saponification water paint |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924667A (en) * | 2012-10-26 | 2013-02-13 | 武汉海源九天新材料有限公司 | Single-component self-phosphatizing antirust acrylic emulsion, and preparation method and application thereof |
| CN104277517A (en) * | 2014-10-09 | 2015-01-14 | 南京华格电汽塑业有限公司 | UV (ultraviolet) finish paint back-spraying water as well as preparation method and application thereof |
-
2016
- 2016-10-17 CN CN201610905397.8A patent/CN106566362A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924667A (en) * | 2012-10-26 | 2013-02-13 | 武汉海源九天新材料有限公司 | Single-component self-phosphatizing antirust acrylic emulsion, and preparation method and application thereof |
| CN104277517A (en) * | 2014-10-09 | 2015-01-14 | 南京华格电汽塑业有限公司 | UV (ultraviolet) finish paint back-spraying water as well as preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312428A (en) * | 2017-07-24 | 2017-11-03 | 杨洁磊 | A kind of preparation method of hard saponification water paint |
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Application publication date: 20170419 |
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