CN115772359A - Quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for axle and preparation method thereof - Google Patents
Quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for axle and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for an axle, which comprises the following components in percentage by mass: waterborne epoxy modified alkyd: 30-40%; wetting and dispersing agent: 0.5 to 1 percent; carbon black: 1 to 2 percent; antirust filling: 5 to 10 percent; filling: 5 to 10 percent; substrate wetting agent: 0.1 to 0.5 percent; defoaming agent: 0.1 to 0.2 percent; accelerator (b): 0.5-1%; aqueous flash rust preventive: 0.5-1%; the balance being deionized water.
Description
Technical Field
The invention relates to a quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for an axle and a preparation method thereof.
Background
With the rapid development of the coating industry and the improvement of the attention degree of human beings on environmental pollution, the water-based coating becomes a research hotspot and a development direction at present, and the water-based alkyd resin coating is widely applied to the fields of steel structures, automobile chassis parts, steel pipes, metal mechanical equipment, furniture, home decoration and the like due to the characteristics of simple and convenient preparation process, easily available raw materials, low pollution and low energy consumption. However, the water-based paint has high requirement on the surface cleanliness of materials in the construction process, the surface tension of water is high, and dirt is easy to cause the coating film to generate shrinkage cavities; in addition, the water-based paint is not suitable for the occasion of high decoration because it has poor water resistance, slow drying after coating, poor coating hardness and difficult achievement of high requirements. On the other hand, the dispersion stability of the aqueous coating material against strong mechanical force is poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing a quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat one-in-one paint special for an axle and a preparation method thereof aiming at the defects in the prior art.
The technical scheme for solving the technical problems is as follows: the quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat integrated paint special for the axle comprises the following components in percentage by mass: waterborne epoxy modified alkyd: 30-40%; wetting and dispersing agent: 0.5-1%; carbon black: 1 to 2 percent; antirust filler: 5 to 10 percent; filling: 5 to 10 percent; substrate wetting agent: 0.1 to 0.5 percent; defoaming agent: 0.1 to 0.2 percent; accelerator (b): 0.5 to 1 percent; aqueous flash rust preventive: 0.5-1%; the balance being deionized water.
The technical scheme of the invention is further defined as follows:
preferably, the waterborne epoxy modified alkyd prepolymer comprises the following components in parts by weight: 100-150 parts of linoleic acid, and soya oil acid: 100-150 parts of epoxy resin: 200-260 parts of zinc oxide: 3-6 parts of isopentene acid: 1-5 parts of triethylamine: 5-10 parts.
Preferably, the filler is barium sulfate and wollastonite powder which are mixed according to the ratio of 2.
Preferably, the wetting dispersant is BYK-345.
Preferably, the defoamer is a water-based silicone defoamer.
Preferably, the aqueous anti-flash rust agent comprises the following components in parts by mass: 5-12 parts of ammonium molybdate, 10-17 parts of sodium benzoate, 6-11 parts of benzotriazole, 5-11 parts of dimethylethanolamine, 3-5 parts of sodium hexametaphosphate, 1-4 parts of sodium tetraborate and 3-7 parts of sodium hydroxide.
The invention provides a preparation method of a special quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint for an axle, which specifically comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentene acid and the dimethylbenzene according to the parts by weight, starting stirring when the temperature is increased to 100-125 ℃, refluxing when the temperature is increased to 150-160 ℃, keeping the temperature when the temperature is increased to 200-230 ℃, adding triethylamine to adjust the acid value to be less than 5mgKOH/g to obtain the waterborne epoxy modified alkyd, and cooling for later use;
(2) Adding the waterborne epoxy modified alkyd, carbon black, filler, a base material wetting agent, a defoaming agent and half of water into a stirring device, and stirring for 15-20 minutes at the rotating speed of 400-500 revolutions per minute;
(3) And (3) continuously adding the antirust filler, the water-based anti-flash rust agent, the accelerator and the rest of water into the mixture obtained in the step (2), and continuously stirring the mixture at the rotating speed of 500-650 revolutions per minute for 30-35 minutes.
The invention has the beneficial effects that:
the primer prepared by the invention has the advantages of 0-grade adhesive force, 1mm flexibility, 50 kg-cm impact strength, 360h water resistance and 200h neutral salt spray resistance, and reaches the standards of primers in JG/T224-2007 and HG/T5176-2017
According to the invention, benzene rings and epoxy groups in the epoxy resin are introduced into a molecular structure, and the epoxy resin has excellent adhesive force, chemical resistance and corrosion resistance due to the special molecular structure of the epoxy resin, so that the alkyd resin is modified by the epoxy resin, the adhesive force and salt spray resistance of a product to a base material after film forming can be effectively improved, and the waterborne organic silicon defoamer has the advantage of high defoaming capability, can effectively remove micro bubbles in the coating, enables the coating to be more tightly combined with the base, more effectively seals the base material, and prevents substances such as water, oxygen and the like from contacting the base through the bubbles to cause corrosion
The aqueous flash rust inhibitor is a paint consisting of ammonium molybdate, sodium benzoate, benzotriazole, dimethylethanolamine, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide and is brushed and coated on the surface of metal, a passivation layer can be quickly formed, the metal is isolated from oxygen and other oxidizing and corrosive substances, and the effects of rust prevention and flash rust prevention are achieved
Detailed Description
Example 1
The embodiment provides a quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for an axle, which comprises the following components in percentage by mass: waterborne epoxy modified alkyd: 30 percent; wetting and dispersing agent: 0.5 percent; carbon black: 1 percent; antirust filling: 5 percent; filling: 5 percent; substrate wetting agent: 0.1% defoamer: 0.1 percent; accelerator (b): 0.5 percent; aqueous flash rust preventive: 0.5 percent; the balance of deionized water;
the waterborne epoxy modified alkyd comprises the following components in parts by weight: 100 parts of linoleic acid, and soya oil acid: 100 parts of epoxy resin: 200 parts of zinc oxide: 3 parts of isopentenoic acid: 2 parts of triethylamine: 5 parts of a mixture; the filling material is barium sulfate and wollastonite powder which are mixed according to the proportion of 2; the wetting dispersant is BYK-345; the defoaming agent is a water-based organic silicon defoaming agent; the water-based flash rust inhibitor comprises the following components in parts by weight: 5 parts of ammonium molybdate, 10 parts of sodium benzoate, 6 parts of benzotriazole, 5 parts of dimethylethanolamine, 3 parts of sodium hexametaphosphate, 1 part of sodium tetraborate and 3 parts of sodium hydroxide.
The embodiment provides a preparation method of a quick-drying high-hardness waterborne epoxy modified alkyd primer-topcoat integrated paint special for an axle, which specifically comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentenoic acid and the xylene according to the parts by weight, starting stirring when the temperature is raised to 110 ℃, refluxing when the temperature is raised to 150 ℃, keeping the temperature when the temperature is raised to 200 ℃, adding triethylamine to adjust the acid value to be less than 5mgKOH/g to obtain the waterborne epoxy modified alkyd, and cooling for later use;
(2) Adding the waterborne epoxy modified alkyd, carbon black, filler, a base material wetting agent, a defoaming agent and half of water into a stirring device, and stirring for 20 minutes at the rotating speed of 400 revolutions per minute;
(3) And (3) continuously adding the antirust filler, the water-based anti-flash rust agent, the accelerator and the rest of water into the mixture obtained in the step (2), and continuously stirring the mixture for 30 minutes at the rotating speed of 650 revolutions per minute.
Example 2
The embodiment provides a quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for an axle, which comprises the following components in percentage by mass: waterborne epoxy modified alkyd: 40 percent; wetting and dispersing agent: 0.8 percent; carbon black: 2 percent; antirust filling: 7 percent; filling: 8 percent; substrate wetting agent: 0.3 percent; defoaming agent: 0.15 percent; accelerator (b): 0.7 percent; aqueous flash rust preventive: 0.6 percent; the balance of deionized water;
the waterborne epoxy modified alkyd comprises the following components in parts by weight: 150 parts of linoleic acid, and soya oil acid: 120 parts of epoxy resin: 230 parts and zinc oxide: 4 parts, isopentenoic acid: 3 parts of triethylamine: 8 parts of a mixture; the filling material is barium sulfate and wollastonite powder which are mixed according to the proportion of 2; the wetting dispersant is BYK-345; the defoaming agent is a water-based organic silicon defoaming agent; the water-based flash rust inhibitor comprises the following components in parts by mass: 8 parts of ammonium molybdate, 13 parts of sodium benzoate, 8 parts of benzotriazole, 7 parts of dimethylethanolamine, 5 parts of sodium hexametaphosphate, 2 parts of sodium tetraborate and 5 parts of sodium hydroxide.
The embodiment provides a preparation method of a quick-drying high-hardness waterborne epoxy modified alkyd primer-topcoat integrated paint special for an axle, which specifically comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentene acid and the dimethylbenzene according to the parts by weight, starting stirring when the temperature is raised to 125 ℃, refluxing when the temperature is raised to 155 ℃, keeping the temperature when the temperature is raised to 220 ℃, adding triethylamine to adjust the acid value to be less than 5mgKOH/g to obtain the waterborne epoxy modified alkyd, and cooling for later use;
(2) Adding the waterborne epoxy modified alkyd, carbon black, filler, a base material wetting agent, a defoaming agent and half of water into a stirring device, and stirring for 18 minutes at the rotating speed of 450 revolutions per minute;
(3) The rust-preventive filler, the aqueous flash rust preventive agent, the accelerator and the remaining water were continuously added to the mixture obtained in (2), and the mixture was further stirred at 500 rpm for 35 minutes.
Example 3
The embodiment provides a quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for an axle, which comprises the following components in percentage by mass: waterborne epoxy modified alkyd: 35 percent; wetting and dispersing agent: 1 percent; carbon black: 2 percent; antirust filler: 10 percent; filling: 10 percent; substrate wetting agent: 0.5 percent; defoaming agent: 0.2 percent; accelerator (b): 1 percent; aqueous flash rust preventive: 1 percent; the balance of deionized water;
the waterborne epoxy modified alkyd comprises the following components in parts by weight: 150 parts of linoleic acid, and the content of the linoleic acid: 130 parts of epoxy resin: 260 parts of zinc oxide: 6 parts of isopentenoic acid: 5 parts of triethylamine: 10 parts of (A); the filling material is barium sulfate and wollastonite powder which are mixed according to the proportion of 2; the wetting dispersant is BYK-345; the defoaming agent is a water-based organic silicon defoaming agent; the aqueous flash rust inhibitor comprises the following components in parts by mass: 12 parts of ammonium molybdate, 15 parts of sodium benzoate, 11 parts of benzotriazole, 11 parts of dimethylethanolamine, 5 parts of sodium hexametaphosphate, 4 parts of sodium tetraborate and 7 parts of sodium hydroxide.
The embodiment provides a preparation method of a quick-drying high-hardness waterborne epoxy modified alkyd primer-topcoat integrated paint special for an axle, which specifically comprises the following steps:
(1) Mixing the soybean oleic acid, the epoxy resin, the zinc oxide, the isopentene acid and the xylene according to the parts by weight, starting stirring when the temperature is raised to 125 ℃, refluxing when the temperature is raised to 160 ℃, keeping the temperature when the temperature is raised to 230 ℃, adding triethylamine to adjust the acid value to be less than 5mgKOH/g to obtain the waterborne epoxy modified alkyd, and cooling for later use;
(2) Adding the waterborne epoxy modified alkyd, carbon black, filler, a base material wetting agent, a defoaming agent and half of water into a stirring device, and stirring for 15 minutes at the rotating speed of 500 revolutions per minute;
(3) Continuing to add the antirust filler, the aqueous anti-flash rust agent, the accelerator and the rest of the water in the step (2), and continuing to stir at the rotating speed of 650 rpm for 30 minutes.
TABLE 1 Performance parameters of the examples
| EXAMPLE 1 | EXAMPLE 2 | EXAMPLE 3 | |
| Surface drying time/h | 1.4 | 1．1 | 1 |
| Actual drying time/h | 24 | 23 | 21 |
| Adhesion/grade | 1 | 1 | 1 |
| Water resistance/h | 240 | 240 | 240 |
| Acid and alkali resistance/h | 24 | 24 | 24 |
| Hardness of | 0.6 | 0.68 | 0.65 |
| Impact resistance/cm | >55 | >55 | >55 |
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat integrated paint special for the axle is characterized by comprising the following components in percentage by mass: waterborne epoxy modified alkyd: 30-40%; wetting and dispersing agent: 0.5 to 1 percent; carbon black: 1 to 2 percent; antirust filler: 5 to 10 percent; filling: 5 to 10 percent; substrate wetting agent: 0.1 to 0.5 percent; defoaming agent: 0.1 to 0.2 percent; accelerator (b): 0.5-1%; aqueous flash rust preventive: 0.5-1%; the balance being deionized water.
2. The quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for the axle according to claim 1, wherein the water-based epoxy modified alkyd prepolymer comprises the following components in parts by weight: 100-150 parts of linoleic acid, and soya oil acid: 100-150 parts of epoxy resin: 200-260 parts of zinc oxide: 3-6 parts of isopentenoic acid: 1-5 parts of triethylamine: 5-10 parts.
3. The quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat in one formula special for axles according to claim 1, wherein the filler is a mixture of barium sulfate and wollastonite powder according to a ratio of 2.
4. The quick-drying high-hardness water-based epoxy modified alkyd primer for the axle of claim 1, wherein the wetting dispersant is BYK-345.
5. The quick-drying high-hardness water-based epoxy modified alkyd primer for vehicle axles of claim 1, wherein the defoamer is a water-based silicone defoamer.
6. The quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for the axle according to claim 1, wherein the water-based flash rust inhibitor comprises the following components in parts by weight: 5-12 parts of ammonium molybdate, 10-17 parts of sodium benzoate, 6-11 parts of benzotriazole, 5-11 parts of dimethylethanolamine, 3-5 parts of sodium hexametaphosphate, 1-4 parts of sodium tetraborate and 3-7 parts of sodium hydroxide.
7. The quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for the axle according to claim 1, wherein the water-based flash rust inhibitor comprises the following components in parts by weight: 5-12 parts of ammonium molybdate, 10-17 parts of sodium benzoate, 6-11 parts of benzotriazole, 5-11 parts of dimethylethanolamine, 3-5 parts of sodium hexametaphosphate, 1-4 parts of sodium tetraborate and 3-7 parts of sodium hydroxide.
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|---|---|---|---|
| CN202211717157.7A CN115772359A (en) | 2022-12-30 | 2022-12-30 | Quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for axle and preparation method thereof |
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| CN202211717157.7A CN115772359A (en) | 2022-12-30 | 2022-12-30 | Quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for axle and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504668A (en) * | 2011-11-18 | 2012-06-20 | 杭州传化涂料有限公司 | Water-based primer-topcoat synthetic anti-corrosive paint for coating automobile spare parts and preparation method thereof |
| CN111593336A (en) * | 2020-06-22 | 2020-08-28 | 河北铂润工贸科技有限公司 | Water-based antirust and flash rust-proof agent and preparation method thereof |
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- 2022-12-30 CN CN202211717157.7A patent/CN115772359A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504668A (en) * | 2011-11-18 | 2012-06-20 | 杭州传化涂料有限公司 | Water-based primer-topcoat synthetic anti-corrosive paint for coating automobile spare parts and preparation method thereof |
| CN111593336A (en) * | 2020-06-22 | 2020-08-28 | 河北铂润工贸科技有限公司 | Water-based antirust and flash rust-proof agent and preparation method thereof |
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