An oil sucker rod water-based asphalt paint and a preparation method and use method thereof

Abstract

The present application belongs to the technical field of paint, and particularly relates to an oil sucker rod water-based asphalt paint and a preparation method and use method thereof. The water-based asphalt paint comprises the following raw materials in mass percentage: 40%-45% of acrylic resin, 6%-10% of petroleum resin, 10%-15% of asphalt, 2%-3% of carbon black, 4%-5% of water-based additive, and 33%-38% of deionized water. The water-based asphalt paint can be coated on the oil sucker rod by dipping or spraying, has the characteristics of quick drying, salt mist resistance and strong oil solubility, is safe and environmentally friendly, has simple construction process, and can save the current spraying cost of the oil sucker rod.

Description

Technical Field

[0001] This invention belongs to the field of coating technology, specifically relating to a water-based asphalt paint for sucker rods and its preparation and application methods. Background Technology

[0002] Currently, most sucker rod surface coatings use oil-based paints. However, under the increasingly stringent environmental protection requirements in China, oil-based paints containing volatile organic compounds (VOCs) can no longer meet these requirements. Oil-based paints are toxic to humans, carcinogenic, flammable, and explosive, and require additional costs for construction protection and hazardous waste disposal. Summary of the Invention

[0003] To address the problems in the background technology, the present invention provides a water-based asphalt paint for sucker rods, its preparation method, and its application method.

[0004] The technical solution of the present invention is as follows:

[0005] This invention provides a water-based asphalt paint for sucker rods, comprising the following raw materials in weight percentages:

[0006] Acrylic resin 40%-45%, petroleum resin 6%-10%, asphalt 10%-15%, carbon black 2%-3%, water-based additives 4%-5%, deionized water 33%-38%.

[0007] The present invention also provides a method for preparing the aforementioned water-based asphalt paint for sucker rods, comprising the following steps:

[0008] (1) Inject deionized water into the cylinder, add water-based additives, stir evenly, add carbon black, and continue to disperse for 40-60 minutes;

[0009] (2) The dispersed slurry is fed into a horizontal sand mill through a conveying pump and ground to the preset particle size;

[0010] (3) Add water-based additives, acrylic resin, petroleum resin and asphalt to the ground slurry in sequence, mix and adjust the slurry to the preset viscosity.

[0011] Furthermore, water-based additives include dispersants, defoamers, leveling agents, wetting agents, and thickeners.

[0012] The present invention also provides a method for using the aforementioned water-based asphalt paint on sucker rods, which is a dip coating process, as follows:

[0013] (1) Pour the water-based asphalt paint into the paint tank, stir it thoroughly, and add water at a rate of 1%-2%;

[0014] (2) The surface of the sucker rod must be cleaned to remove oil, paint thinner or other chemical raw materials;

[0015] (3) Immerse the sucker rod in the paint bath and let it stand, or use mechanical vibration to make the surface of the sucker rod fully contact the water-based asphalt paint until the preset paint film thickness is achieved.

[0016] (4) Remove the sucker rod and let it stand to dry naturally or in a ventilated place.

[0017] The present invention also provides a method for using the water-based asphalt paint on the sucker rod, which is spraying, and the operation is as follows:

[0018] (1) Clean the surface of the sucker rod to be sprayed;

[0019] (2) The sucker rod is conveyed to the spraying machine by a conveying device;

[0020] (3) Spray evenly onto the surface of the sucker rod until the preset paint film thickness is achieved;

[0021] (4) Let it stand to dry or ventilate to dry, or bake it.

[0022] Beneficial effects

[0023] The water-based asphalt paint provided by this invention can be applied to sucker rods by dip coating or spray coating. It features quick drying, salt spray resistance, and strong oil solubility. It is safe and environmentally friendly, and the construction process is simple, which can save the current spraying cost of sucker rods. Attached Figure Description

[0024] Figure 1 The present invention provides a method flow for preparing water-based asphalt paint for sucker rods according to an embodiment of the present invention.

[0025] Figure 2 This is an example of a tooling for dipping or spraying sucker rods, as described in an embodiment of the present invention.

[0026] The components represented by the various reference numerals in the diagram are:

[0027] 1. Suspended basket body, 2. Divider plate, 3. Groove, 4. Suspension rope, 5. Divider hole. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] This invention provides a water-based asphalt paint for sucker rods, comprising the following raw materials in weight percentages:

[0030] Acrylic resin 40%-45%, petroleum resin 6%-10%, asphalt 10%-15%, carbon black 2%-3%, water-based additives 4%-5%, deionized water 33%-38%.

[0031] This water-based asphalt paint can reduce the content of volatile organic compounds, meeting environmental protection requirements.

[0032] This invention also provides a method for preparing the aforementioned water-based asphalt paint for sucker rods, such as... Figure 1 As shown, it includes the following steps:

[0033] (1) Inject deionized water into the cylinder, add water-based additives, stir evenly, add carbon black, and continue to disperse for 40-60 minutes;

[0034] (2) The dispersed slurry is fed into a horizontal sand mill through a conveying pump and ground to the preset particle size;

[0035] (3) Add water-based additives, acrylic resin, petroleum resin and asphalt to the ground slurry in sequence, mix and adjust the slurry to the preset viscosity.

[0036] Specifically, water-based additives include dispersants, defoamers, leveling agents, wetting agents, and thickeners.

[0037] The present invention also provides a method for using the aforementioned water-based asphalt paint on sucker rods, which is a dip coating process, as follows:

[0038] (1) Pour the water-based asphalt paint into the paint tank, stir it thoroughly, and add water at a rate of 1%-2%.

[0039] When water-based asphalt paint is slowly injected into the pool, the flow rate should not be too high, as this will affect the appearance and performance of the paint film on the pole.

[0040] When diluting with water, the normal amount of water added is 1-2% by weight, with an upper limit of 5%. Excessive dilution is strictly prohibited, as it will result in excessively low paint viscosity, insufficient paint film thickness, and performance accidents.

[0041] To ensure the basic performance of the pole coating meets the required standards, the water-based paint solids content should be maintained at 48-50% before application. In summer, using a Coat 4 viscosity cup, the paint viscosity should be controlled between 65-90 seconds; using a Stormer viscosity cup, the KU value should be around 60-70. In winter, using a Coat 4 viscosity cup, the paint viscosity should be controlled between 45-55 seconds; using a Stormer viscosity cup, the KU value should be around 50-65.

[0042] Furthermore, to ensure consistent solids content and viscosity of the water-based asphalt paint in the pool, a circulation pump is installed for swimming circulation. The inlet and outlet pipes are submerged, with both ports at the bottom of the pool, not above the liquid surface, to avoid generating shear foam. The inlet and outlet ports are installed at both ends of the immersion pool to ensure high circulation efficiency, good results, and consistency of the water-based asphalt paint in the pool.

[0043] (2) Clean the surface of the sucker rod thoroughly, ensuring it is free of oil, paint thinner, or other chemical materials.

[0044] (3) Immerse the sucker rod in the paint bath and let it stand, or use mechanical vibration to make the surface of the sucker rod fully contact the water-based asphalt paint until the preset paint film thickness is achieved.

[0045] (4) Remove the sucker rod and let it stand to dry naturally or in a ventilated place.

[0046] Specifically, immerse the poles in the pool for 2-3 minutes (a single dip can achieve a paint film thickness of approximately 100 micrometers; if specific thickness requirements are needed, a second dip can be applied). Ensure the entire bundle of poles and edges are evenly coated. After lifting them out of the liquid and allowing them to dry for 5-10 minutes, move the poles to the self-drying station and allow them to air dry naturally. In cases of excessive humidity or extremely low temperatures, supplemental heating can be used to accelerate drying. The temperature should be around 15-20 degrees Celsius. To further speed up surface drying, auxiliary equipment such as fans can be added. When using fans, ensure they are applied 15 minutes after immersion and allow to dry, and maintain a distance of at least 3 meters from the poles. Avoid direct airflow from the air outlet onto the poles to prevent uneven surface drying and paint film cracking during forced drying due to inconsistent tension.

[0047] When tested at room temperature (25℃), the surface drying time is 4-6 hours for a film thickness of 100 micrometers; 6-8 hours for a film thickness of 150 micrometers; and 24-48 hours for a film thickness of 90-110 micrometers, with the drying time extended appropriately at lower temperatures.

[0048] If the paint in the tank is not used for a long time and is not intended for dipping sucker rods, it should be sealed with a lid. Before sealing, spray a layer of water on the paint surface for protection to reduce oxidation and peeling. If improper maintenance causes the paint surface to peel, simply remove the peeling layer before use.

[0049] The present invention also provides a method for using the aforementioned water-based asphalt paint on sucker rods, which is by spraying, and the operation is as follows:

[0050] (1) Clean the surface of the sucker rod to be sprayed;

[0051] (2) The sucker rod is conveyed to the spraying machine by a conveying device;

[0052] (3) Spray evenly onto the surface of the sucker rod until the preset paint film thickness is achieved;

[0053] (4) Let it stand to dry or ventilate to dry, or bake it.

[0054] To ensure performance, sucker rods coated with the water-based asphalt paint of this invention need to be stored in an environment of 5-40 degrees Celsius. When the temperature is below 5 degrees Celsius, additional insulation measures should be taken, and storage in an environment below zero degrees Celsius is strictly prohibited.

[0055] As a preferred, and not a limitation, method of dip coating or spray coating for sucker rods described above can be adopted. Figure 2 The fixture shown differs from a standard suspended platform in that it has a partition plate 2 with multiple partition holes 5 at the upper end of the platform body 1. The diameter of each partition hole 5 is larger than the upper diameter of the sucker rod workpiece. The upper end of the sucker rod workpiece is inclined and supported within each partition hole 5. A groove 3 corresponding to the partition holes 5 is provided at the bottom of the platform body 1 to slightly limit the lower end of the sucker rod workpiece. Simultaneously, the hoist (not shown) and lifting rope 4 are increased to four locations, evenly distributed around the upper perimeter of the platform body 1. This allows the sucker rod workpiece to roll and shift slightly along the inner wall of the partition holes 5, whether during dip coating or spray coating, by raising and lowering the four hoists at different times, frequencies, and / or with small lifting amplitudes. Figure 2 (As shown at point A in the middle), this reduces dead corners in the coating process.

[0056] Example 1

[0057] The water-based asphalt paint for sucker rods provided in this embodiment includes the following raw materials in weight percentage:

[0058] Acrylic resin 40%, petroleum resin 7%, asphalt 13%, carbon black 2.5%, water-based additives 4.5%, deionized water 33%.

[0059] Deionized water is injected into the mixing tank, followed by the addition of a water-based dispersant, defoamer, leveling agent, and wetting agent. After thorough mixing, carbon black is added, and dispersion continues. The dispersed slurry is then pumped into a horizontal sand mill to grind it to the preset particle size. Water-based dispersant, defoamer, leveling agent, wetting agent, acrylic resin, petroleum resin, and asphalt are added sequentially to the ground slurry and mixed. A thickener is added to adjust the slurry to the preset viscosity. Next, the water-based asphalt paint is applied to the sucker rod using the previously described dip-coating method, resulting in a film thickness of 120 micrometers, which is then surface-dried.

[0060] Example 2

[0061] The water-based asphalt paint for sucker rods provided in this embodiment includes the following raw materials in weight percentage:

[0062] Acrylic resin 43%, petroleum resin 6%, asphalt 11%, carbon black 2%, water-based additives 4%, deionized water 34%.

[0063] Deionized water is injected into the mixing tank, followed by the addition of a water-based dispersant, defoamer, leveling agent, and wetting agent. After thorough mixing, carbon black is added, and dispersion continues. The dispersed slurry is then pumped into a horizontal sand mill to grind it to the preset particle size. Water-based dispersant, defoamer, leveling agent, wetting agent, acrylic resin, petroleum resin, and asphalt are added sequentially to the ground slurry and mixed. A thickener is added to adjust the slurry to the preset viscosity. Next, the water-based asphalt paint is applied to the sucker rod using the previously described dip-coating method, resulting in a film thickness of 114 micrometers, after which it is surface dry.

[0064] Example 3

[0065] The water-based asphalt paint for sucker rods provided in this embodiment includes the following raw materials in weight percentage:

[0066] Acrylic resin 41%, petroleum resin 8%, asphalt 10%, carbon black 2%, water-based additives 4%, deionized water 35%.

[0067] Deionized water is injected into the mixing tank, followed by the addition of a water-based dispersant, defoamer, leveling agent, and wetting agent. After thorough mixing, carbon black is added, and dispersion continues. The dispersed slurry is then pumped into a horizontal sand mill to grind it to the preset particle size. Water-based dispersant, defoamer, leveling agent, wetting agent, acrylic resin, petroleum resin, and asphalt are added sequentially to the ground slurry and mixed. A thickener is added to adjust the slurry to the preset viscosity. Next, the water-based asphalt paint is applied to the sucker rod using the previously described spraying method, resulting in a film thickness of 102 micrometers, which is then surface dry.

[0068] The sucker rods coated according to Examples 1, 2, and 3 have a uniform, complete, and seamless paint layer. The sucker rods coated with water-based asphalt paint according to Examples 1, 2, and 3 were subjected to the following experiments, and their relevant properties were tested:

[0069] (1) No rusting after 48-72 hours of salt spray test.

[0070] (2) The paint surface does not peel off after immersion in water for 350 hours.

[0071] (3) The softening point is 80℃. High temperature baking will not cause it to stick again.

[0072] (4) Oiling test, 30 to 40 minutes, after wiping, there is no residue on the sucker rod.

[0073] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for using water-based asphalt paint on sucker rods, characterized in that, The water-based asphalt paint for the sucker rod is composed of the following raw materials in weight percentage: Acrylic resin 40%-45%, petroleum resin 6%-10%, asphalt 10%-15%, carbon black 2%-3%, water-based additives 4%-5%, deionized water 33%-38%; The method of use is dip coating, which is achieved by the following tooling: a partition plate (2) with multiple partition holes (5) is set on the upper end of the basket body (1). The diameter of the partition holes (5) is larger than the upper end diameter of the sucker rod workpiece. The upper end of the sucker rod workpiece is inclined and supported in each partition hole (5). A groove (3) corresponding to the multiple partition holes (5) is set on the bottom end of the basket body (1) to limit the lower end of the sucker rod workpiece. At the same time, four hoists and four hoisting ropes (4) are evenly distributed around the upper end of the basket body (1). The dip coating is achieved by having four elevators move up and down at different times, frequencies and / or lifting amplitudes, so that the sucker rod workpiece rolls and moves along the inner wall of the partition hole (5); During construction, the water-based asphalt paint on the sucker rod has a solid content of 48-50%, and the thickness of the paint film after a single dip coating reaches 100 micrometers.

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