CN103555121A - Water-based antiseptic paint for automotive chassis and preparation method thereof - Google Patents
Water-based antiseptic paint for automotive chassis and preparation method thereof Download PDFInfo
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- CN103555121A CN103555121A CN201310539144.XA CN201310539144A CN103555121A CN 103555121 A CN103555121 A CN 103555121A CN 201310539144 A CN201310539144 A CN 201310539144A CN 103555121 A CN103555121 A CN 103555121A
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Abstract
The invention provides a water-based antiseptic paint for an automotive chassis. The automotive paint is prepared by mixing the following components in parts by weight: 48-52 parts of LH-302 resin, 2.0-2.5 parts of carbon black, 7-9 parts of iron black, 12-13 parts of modified aluminum tripolyphosphate, 1-3 parts of organic nitrogen zinc salt, 9-11 parts of modified filler, 0.3-0.5 parts of wetting dispersant, 0.8-1.0 part of corrosion inhibitor, 0.3-0.5 parts of substrate wetting agent, 0.1-2.0 parts of assistant and 10-12 parts of deionized water. The water-based antiseptic paint for the automotive chassis provided by the invention can be naturally dried at normal temperature and can be dried at a low temperature (dried for 0.5 hour at 80-90 DEG C), the paint film property is remarkably enhanced, and the adhesive force, the hardness and the salt fog resistance are ideal. The paint is mainly used for automobile axles, automotive chassis, auto parts and the like.
Description
Technical field:
The present invention relates to paint field, be specifically related to a kind of aqueous automobile chassis antifouling paste and preparation method thereof.
Background technology:
Along with people's environmental consciousness strengthens the corresponding appearance with various countries' environmental regulation day by day, solvent reducible coatings is because its volatile organic compounds (VOC) content is high, severe contamination ecotope, therefore its application is more and more restricted.Aqueous black automobile chassis antifouling paste is a new technology of field of Environment Protection projection, it has adopted IPN ipn technology, not only reached zero VOC discharge, improve environment, reduce labour intensity, and film performance can want to match in excellence or beauty with solvent reducible coatings, preparation of construction and execution conditions are also close with solvent reducible coatings construction, and thinner is ordinary tap water.
Summary of the invention:
The invention provides a kind of aqueous automobile chassis antifouling paste preparation method.Product normal temperature of the present invention can be from dry, oven drying at low temperature (80～90 ℃ are dried 0.5 hour), and paint film property obviously strengthens, and sticking power, hardness, salt fog resistance are all very desirable.Be mainly used in automotive axle, automobile chassis and automobile component etc.
The technical solution used in the present invention is as follows for achieving the above object:
A chassis antifouling paste, is characterized in that, its component by following weight part is made:
LH-302 resin 48-52, carbon black 2.0-2.5, iron black 7-9, modification aluminium triphosphate 12-13, organonitrogen zinc salt 1-3, modified filler 9-11, wetting dispersing agent 0.3-0.5, inhibiter 0.8-1.0, ground wetting agent 0.3-0.5, auxiliary agent 0.1-2.0, deionized water 10-12
The preparation method of described LH-302 resin is:
(1) take by weight following component:
Epoxy resin E427-9, lipid acid 15-17, molecular weight regulator 0.1-0.3, silicone intermediate 3-5, methyl methacrylate 18-20, butyl acrylate 8-9, methoxy polyethylene glycol methacrylate-styrene polymer 2-4, Hydroxyethyl acrylate ester 2-4, Sodium dodecylbenzene sulfonate 2-4, benzoyl peroxide 0.5-0.7, mixed solvent 35-38;
(2) lipid acid is dropped in reactor, add epoxy resin, molecular weight regulator and partial solvent, carry out esterification in 150～160 ℃, when acid value is down to 30～50mgKOH/g, be considered as esterification terminal, be cooled to room temperature;
(3) in reactor, add silicone intermediate, tensio-active agent, mixed solvent to stir and be warming up to backflow, drip again Acrylic Acid Monomer and part initiator, 2.5-3.2h drip off, insulation 1-1.5h, continues to drip remaining initiator, is incubated 1.0-1.2h simultaneously again, discharging, regulate Ph to neutral, with deionized water, be diluted to the water-base resin liquid of solids content 40%, be LH-302 resin;
Described modified filler is to be prepared and obtained by following method: a. takes off the raw material of row weight part: kaolin 100-150, calcium carbonate 120-130, zeolite 10-12, nano-sized carbon 1-2, tungstic oxide 1-2, lanthanum trioxide 2-3, peppermint essential oil 2-3, Sodium peroxoborate 1-2, aluminum oxide 2-3, precipitator method barium sulfate 30-34, tea-polyphenol 3-4, triethyl citrate 1-2, titanate coupling agent TMC-TTS4-6, jade powder 1-2;
B, kaolin, calcium carbonate, zeolite are calcined to 4-5h at 450-480 ℃, be cooled to room temperature, after taking-up, add in the sodium hydroxide solution of 3-4% and grind 1-2 hour, then, the hydrochloric acid soln that adds 12-15%, adjusting pH value is 4-5, ageing 10-15 hour, and it is neutral that repeated hydrogenation sodium hydroxide solution regulates lapping liquid pH, filter, dry and obtain filler powder;
C, above-mentioned gained powder is mixed with other remaining component, and even with the high speed dispersion of 8000-10000 rev/min, obtain.
Described aqueous automobile chassis antifouling paste, is characterized in that: described auxiliary agent is selected from one or more in flow agent, defoamer, siccative, thickening material.
The production method of described aqueous automobile chassis antifouling paste, is characterized in that, comprises the following steps:
(1) by deionized water, wetting dispersing agent, defoamer, flow agent, mix, then add part resin liquid, regulate pH value to 8.5-9.0;
(2) under agitation, add pigment, filler, after high speed dispersion 1-1.5h, with 80 mesh sieves, filter, the material of filtration enters sand mill circular grinding to fineness≤25u, discharging, outlet material temperature≤60 ℃;
(3) material that mesh-of-grind is qualified adds to adjust to be converted in still, and adds the rest materials in formula, with the high speed of 1250～2000r/min, stirs evenly;
(4), after stirring evenly, with deionized water, adjust viscosity to 70-110KU, pH value-10, then filter, pack with 200 order vibratory screening apparatuss.
Technical scheme deterministic process of the present invention:
(1) determining of organosilicon, the composite modified epoxy ester of vinylformic acid resin (hereinafter to be referred as LH-302 resin):
In this composite modified epoxy ester resin, the present invention first utilize lipid acid at 150～160 ℃ to epoxy resin open loop, owing to introducing longer aliphatic chain in epoxy resin, improved hydroxyl value and the cross-linking density of resin, the wear resistance of resin, sticking power, weathering resistance be improved significantly.With epoxy resin, the silicone intermediate of open loop, the active group of tensio-active agent-OH/-OR hydrophilic active group and acrylic resin carries out polycondensation, thereby obtains water-soluble polymer condensation copolymerization resin, has obtained the moderate IPN structure of molecular weight.
It is a kind of new synthetic technology that organosilicon chemistry is applied to acrylic acid epoxy polyisocyanate polyaddition, make the product generating there is material in three simultaneously, owing to having introduced the Si-O of organosilicon functional group key in resin, its bond energy is far longer than C-C, C-O key, thereby resistance to UV and oxidative degradation
Performance is good, and Si-O key is silica cross-link bond in resin curing process, has increased the cross-linking density of filming, and has accelerated resin transformation to three dimensional structure by linear polymeric.
(2) become determining of paint formula:
Aqueous anticorrosion paint of the present invention; mainly be applicable to the corrosion-resistanting decoration of automobile chassis and component thereof; require the 150h of resistance to neutral salt spray, and not containing heavy metal, therefore selected environmental protection and there is dual rust-proof mechanism---be the modification aluminium triphosphate of chelating protection and physics rust inhibition; due to itself and steel structure chelated surface; make to film finer and close, impervious better, reduced the seepage force of water, oxygen, low-molecular material confrontation paint film; improve the salt fog resistance of paint film, strengthened the sticking power of paint film.Organonitrogen zinc salt, iron black choose reasonable and add in right amount, permeability resistance further strengthens, and every over-all properties of filming is further optimized.Control resin-pigment ratio between 1: 1.8.
In antifouling paste production technique of the present invention, LH-302 resin is the critical material of painting, the synthetic temperature of resin is controlled, the reinforced at the uniform velocity control of property is the key point of resin property quality, and effectively control can make the molecular weight distribution of synthetic resins narrower, thereby obtains desirable paint film; In sand milling operation, high-performance sand grinder grinds 2～3 roads, and fineness can reach below 25 μ, to improve the salt fog resistance of filming.Viscosity and pH value must regulate the package stability of product most important.
Advantage of the present invention:
1, the present invention adopts polymer ipn technology (IPN); the resin liquid of synthesizing excellent performance by special process; dispersion medium is mainly deionized water; the organic solvent that only has minute quantity, VOC is extremely low, can be considered zero VOC discharge; construction thinner is tap water; be conducive to environment protection and workmen's health, saved resource, protected environment.
2, aqueous automobile of the present invention chassis antifouling paste, the oil-proofness of filming, water tolerance is excellent, and strong adhesion, after disposable film forming, can reach 30～50 μ m.
3, the aqueous automobile of the present invention chassis resistance to neutral salt spray of antifouling paste can reach 150h, is up to 240h.
Embodiment
One, the synthetic LH-302 resin of embodiment 1
Main raw material(s)
1.1 materials form
Epoxy resin E-42, lipid acid, high molecular conditioning agent, silicone intermediate, methyl methacrylate (MMA), butyl acrylate (BA), methoxyl group polyvinyl alcohol methacrylic ester (MAA) Hydroxyethyl acrylate (HEA), tensio-active agent, initiator, mixes toxicological harmless solvent and is industrial goods.
1.2 resins are for the weight (kg) of each component used
Wherein, mixed solvent is for to be mixed by the volume ratio of 3: 1: 1 by dimethylbenzene, ethylene glycol ether acetate, secondary butyl ester three;
1.3 synthesis technique
(1) load weighted lipid acid is dropped in reactor, add epoxy resin, molecular weight regulator and partial solvent, carry out esterification in 150-160 ℃, when acid value is down to 40mgKOH/g, be considered as esterification terminal, reaction system is cooled to room temperature;
(2) in reactor, add silicone intermediate, tensio-active agent, alcohol ethers environmental protection mixed solvent to stir temperature rising reflux, drip Acrylic Acid Monomer and initiator, 3h drips off; insulation 1h, adds initiator and is incubated 1h, discharging again; neutralization, the water-base resin liquid of deionized water dilution solids content 40%.
The detection index of 1.4LH-302 resin
| Project | Index | Detected result |
| Outward appearance | Emulsion | Meet |
| Non-volatile content (%) | 40±2 | 40 |
| Viscosity (mPa.s) | ≤400 | 380 |
| VOC（%，≤） | 8.5 | 8.5 |
| PH value | 7.5～9 | 8.3 |
| Water-dilutable | Infinite dilution | Meet |
| Freeze-thaw stability | Never degenerate | Meet |
| Particle charge | Negatively charged ion | Negatively charged ion |
Embodiment 2, preparation water-based lacquering finished product
2.1 main raw material(s) materials form
LH-302 resin (self-control), carbon black (6#), iron oxide black, modification aluminium triphosphate, organonitrogen zinc salt, ultra-fine color stuffing, modified filler, various auxiliary agent and deionized water are industrial goods.
2.2 aqueous automobile chassis antifouling paste each component weight (kg)
2.3 lacquering production technique
(1) by deionized water, wetting dispersing agent, defoamer, flow agent, mix, then add part resin liquid, regulate pH value to 8.5-9.0;
(2) under agitation, add pigment, filler, after high speed dispersion 1-1.5h, with 80 mesh sieves, filter, the material of filtration enters sand mill circular grinding to fineness≤25u, discharging, outlet material temperature≤60 ℃;
(3) material that mesh-of-grind is qualified adds to adjust to be converted in still, and adds the rest materials in formula, with the high speed of 1250～2000r/min, stirs evenly;
(4), after stirring evenly, with deionized water, adjust viscosity to 70-110KU, pH value-10, then filter, pack with 200 order vibratory screening apparatuss.
Wherein, modified filler is to be prepared and obtained by following method: a. takes off the raw material of row weight part: kaolin 140, calcium carbonate 125, zeolite 11, nano-sized carbon 2, tungstic oxide 1, lanthanum trioxide 2, peppermint essential oil 2, Sodium peroxoborate 2, aluminum oxide 2, precipitator method barium sulfate 32, tea-polyphenol 4, triethyl citrate 2, titanate coupling agent TMC-TTS5, jade powder 2;
B, kaolin, calcium carbonate, zeolite are calcined to 4-5h at 450-480 ℃, be cooled to room temperature, after taking-up, add in the sodium hydroxide solution of 3-4% and grind 1-2 hour, then, the hydrochloric acid soln that adds 12-15%, adjusting pH value is 4-5, ageing 10-15 hour, and it is neutral that repeated hydrogenation sodium hydroxide solution regulates lapping liquid pH, filter, dry and obtain filler powder;
C, above-mentioned gained powder is mixed with other remaining component, and even with the high speed dispersion of 8000-10000 rev/min, obtain.
2.4 lacquering assays
Claims (3)
1. an aqueous automobile chassis antifouling paste, is characterized in that, its component by following weight part is made:
LH-302 resin 48-52, carbon black 2.0-2.5, iron black 7-9, modification aluminium triphosphate 12-13, organonitrogen zinc salt 1-3, modified filler 9-11, wetting dispersing agent 0.3-0.5, inhibiter 0.8-1.0, ground wetting agent 0.3-0.5, auxiliary agent 0.1-2.0, deionized water 10-12
The preparation method of described LH-302 resin is:
(1) take by weight following component:
Epoxy resin E4 27-9, lipid acid 15-17, molecular weight regulator 0.1-0.3, silicone intermediate 3-5, methyl methacrylate 18-20, butyl acrylate 8-9, methoxy polyethylene glycol methacrylate-styrene polymer 2-4, Hydroxyethyl acrylate ester 2-4, Sodium dodecylbenzene sulfonate 2-4, benzoyl peroxide 0.5-0.7, mixed solvent 35-38;
(2) lipid acid is dropped in reactor, add epoxy resin, molecular weight regulator and partial solvent, carry out esterification in 150～160 ℃, when acid value is down to 30～50mgKOH/g, be considered as esterification terminal, be cooled to room temperature;
(3) in reactor, add silicone intermediate, tensio-active agent, mixed solvent to stir and be warming up to backflow, drip again Acrylic Acid Monomer and part initiator, 2.5-3.2h drip off, insulation 1-1.5h, continues to drip remaining initiator, is incubated 1.0-1.2h simultaneously again, discharging, regulate Ph to neutral, with deionized water, be diluted to the water-base resin liquid of solids content 40%, be LH-302 resin;
Described modified filler is to be prepared and obtained by following method: a. takes off the raw material of row weight part: kaolin 100-150, calcium carbonate 120-130, zeolite 10-12, nano-sized carbon 1-2, tungstic oxide 1-2, lanthanum trioxide 2-3, peppermint essential oil 2-3, Sodium peroxoborate 1-2, aluminum oxide 2-3, precipitator method barium sulfate 30-34, tea-polyphenol 3-4, triethyl citrate 1-2, titanate coupling agent TMC-TTS 4-6, jade powder 1-2;
B, kaolin, calcium carbonate, zeolite are calcined to 4-5h at 450-480 ℃, be cooled to room temperature, after taking-up, add in the sodium hydroxide solution of 3-4% and grind 1-2 hour, then, the hydrochloric acid soln that adds 12-15%, adjusting pH value is 4-5, ageing 10-15 hour, and it is neutral that repeated hydrogenation sodium hydroxide solution regulates lapping liquid pH, filter, dry and obtain filler powder;
C, above-mentioned gained powder is mixed with other remaining component, and even with the high speed dispersion of 8000-10000 rev/min, obtain.
2. aqueous automobile according to claim 1 chassis antifouling paste, is characterized in that: described auxiliary agent is selected from one or more in flow agent, defoamer, siccative, thickening material.
3. the production method of aqueous automobile according to claim 1 chassis antifouling paste, is characterized in that, comprises the following steps:
(1) by deionized water, wetting dispersing agent, defoamer, flow agent, mix, then add part resin liquid, regulate pH value to 8.5-9.0;
(2) under agitation, add pigment, filler, after high speed dispersion 1-1.5h, with 80 mesh sieves, filter, the material of filtration enters sand mill circular grinding to fineness≤25u, discharging, outlet material temperature≤60 ℃;
(3) material that mesh-of-grind is qualified adds to adjust to be converted in still, and adds the rest materials in formula, with the high speed of 1250～2000 r/min, stirs evenly;
(4), after stirring evenly, with deionized water, adjust viscosity to 70-110 KU, pH value-10, then filter, pack with 200 order vibratory screening apparatuss.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106752607A (en) * | 2016-11-23 | 2017-05-31 | 安徽菱湖漆股份有限公司 | A kind of poly modified acrylic acid leaf springs of car paint and preparation method thereof |
| CN107603446A (en) * | 2017-10-26 | 2018-01-19 | 天津天鑫旺达金属热处理有限公司 | A kind of protective agent for metal heat treatmet process |
| CN107652869A (en) * | 2017-10-26 | 2018-02-02 | 天津天鑫旺达金属热处理有限公司 | One kind is used for the protectant preparation method of metal heat treatmet process |
| CN108976976A (en) * | 2018-06-07 | 2018-12-11 | 宁波帝杨电子科技有限公司 | A kind of environment protecting water-based paint and preparation method thereof |
| CN109321093A (en) * | 2018-09-28 | 2019-02-12 | 湖北鑫汉通管业有限公司 | A kind of processing technology improving plastic-coated steel corrosion resistance |
| CN112592610A (en) * | 2020-12-14 | 2021-04-02 | 山西省安瑞风机电气股份有限公司 | High-temperature-resistant cold-coated zinc and preparation method thereof |
| CN116023848A (en) * | 2023-02-24 | 2023-04-28 | 福建省艺邦新材料科技有限公司 | High-hardness water-based paint and preparation process thereof |
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| CN116023848A (en) * | 2023-02-24 | 2023-04-28 | 福建省艺邦新材料科技有限公司 | High-hardness water-based paint and preparation process thereof |
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| CN103555121B (en) | 2016-05-04 |
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