Water-based asphalt paint for sucker rod as well as preparation method and use method of water-based asphalt paint

Abstract

The invention belongs to the technical field of coatings, and particularly relates to water-based asphalt paint for sucker rods and a preparation method and a use method of the water-based asphalt paint, and the water-based asphalt paint comprises the following raw materials in percentage by mass: 40%-45% of acrylic resin, 6%-10% of petroleum resin, 10%-15% of asphalt, 2%-3% of carbon black, 4%-5% of a water-based additive and 33%-38% of deionized water. The coating can be coated on the sucker rod in a dip-coating and spray-coating manner, has the characteristics of quick drying, salt mist resistance and high oil solubility, is safe and environment-friendly, is simple in construction process, and can save the current spray-coating cost of the sucker rod.

Description

Technical Field

[0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based asphalt paint for a sucker rod and a preparation method and a use method thereof. Background Art

[0002] Most of the existing pumping rod surface spraying treatments use oil-based paint. In the current domestic environment where environmental protection requirements are becoming increasingly stringent, oil-based paints containing organic volatile substances can no longer meet environmental protection requirements. Oil-based paints are toxic to the human body, carcinogenic, flammable and explosive, and construction protection and hazardous waste treatment require additional costs. Summary of the invention

[0003] In order to solve the problems of the background technology, the present invention provides a water-based asphalt paint for a sucker rod and a preparation method and a use method thereof.

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

[0005] The present invention provides a water-based asphalt paint for a sucker rod, comprising the following raw materials in percentage by weight:

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

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

[0008] (1) Deionized water is injected into the pull cylinder, and the water-based additive is added. After stirring evenly, carbon black is added and the dispersion is continued for 40-60 minutes;

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

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

[0011] Furthermore, the aqueous additives include dispersants, defoamers, leveling agents, wetting agents and thickeners.

[0012] The present invention also provides a method for using the water-based asphalt paint for pumping rods, which is dip coating, and the operation is as follows:

[0013] (1) Pour water-based asphalt paint into the paint pool, stir thoroughly, and add 1%-2% water;

[0014] (2) Clean the surface of the sucker rod to avoid oil stains, paint thinners or other chemical raw materials;

[0015] (3) Immerse the sucker rod in the paint pool and leave it to stand, or vibrate it mechanically, so that the surface of the sucker rod is fully exposed to the water-based asphalt paint until the preset paint film thickness is reached;

[0016] (4) Take out the sucker rod and leave it to dry naturally or through ventilation.

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

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

[0019] (2) transporting the sucker rod to the spraying machine through the transport device;

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

[0021] (4) Leave to dry or ventilate to dry, or bake.

[0022] Beneficial Effects

[0023] The water-based asphalt paint provided by the present invention can be applied to the sucker rod by dipping or spraying, has the characteristics of quick drying, salt spray resistance, and strong oil solubility, is safe and environmentally friendly, has a simple construction process, and can save the current spraying cost of the sucker rod. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 The present invention provides a sucker rod dipping or spraying tooling as exemplified in the embodiments of the present invention.

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

[0027] The hanging basket body 1, the partition plate 2, the groove 3, the hanging rope 4, and the partition hole 5. DETAILED DESCRIPTION

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

[0029] The present invention provides a water-based asphalt paint for a sucker rod, comprising the following raw materials in percentage by weight:

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

[0031] The water-based asphalt paint can reduce the content of volatile organic matter and meets environmental protection requirements.

[0032] The present invention also provides a method for preparing the water-based asphalt paint for sucker rods, such as Figure 1 As shown, the following steps are included:

[0033] (1) Deionized water is injected into the pull cylinder, and the water-based additive is added. After stirring evenly, carbon black is added and the dispersion is continued for 40-60 minutes;

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

[0035] (3) Add water-based additives, acrylic resin, petroleum resin, and asphalt to the ground slurry in sequence, mix them, and adjust the slurry to a 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 water-based asphalt paint for pumping rods, which is dip coating, and the operation is as follows:

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

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

[0040] When adding water for dilution, the normal amount of water added is 1-2% by weight, and the upper limit is 5%. Excessive dilution is strictly prohibited, which will cause the paint viscosity to be too low, the paint film thickness to be insufficient, and cause performance accidents.

[0041] In order to ensure that the basic performance of the pole paint film meets the standard, the solid content of the water paint is guaranteed to be 48-50% before construction. In summer, 4 cups of viscosity measurement are applied, and the paint viscosity is controlled between 65-90 seconds; Stormer measurement, KU value is about 60-70. In winter, 4 cups of annual viscosity measurement are applied, and the paint viscosity is controlled between 45-55 seconds; Stormer viscosity measurement, KU value is about 50-65.

[0042] Furthermore, in order to ensure the consistency of the solid content and viscosity of the water-based asphalt paint in the pool, a circulation pump is installed in the pool for swimming circulation. The inlet and outlet pipes are submerged, and the two ports are at the bottom of the pool. They are not allowed to be higher than the liquid surface to avoid shear foam. The inlet and outlet ports should be installed at both ends of the dipping pool to ensure high circulation efficiency and good effect, ensuring the consistency of the water-based asphalt paint in the pool.

[0043] (2) Clean the surface of the sucker rod and make sure there is no oil stain, paint thinner or other chemical raw materials.

[0044] (3) Immerse the sucker rod in the paint pool and leave it alone, or use mechanical vibration to allow the surface of the sucker rod to fully contact the water-based asphalt paint until the preset paint film thickness is reached.

[0045] (4) Take out the sucker rod and leave it to dry naturally or through ventilation.

[0046] Specifically, the rod body is immersed in the pool for 2-3 minutes (the thickness of the paint film can reach about 100 microns in one dip coating. If there are special requirements for the thickness of the paint film, a second dip coating can be performed). After ensuring that the entire bundle of rods and the corners are evenly dipped, the liquid surface is lifted to control the paint for 5-10 minutes, and then the rod body is moved to the self-drying station to wait for natural drying. In the case of excessive humidity and extremely low temperature, auxiliary heating can be used to increase the drying speed. The temperature is about 15-20 degrees Celsius. Auxiliary equipment such as fans can be added to speed up the surface drying time. When using fans, it should be noted that the rod body should be immersed in the paint for 15 minutes, and the distance from the rod body should not be less than 3 meters. It is strictly forbidden to blow directly on the rod body from the air outlet to prevent the local surface from drying too quickly due to direct hot air blowing on the rod body, and the paint film will crack due to inconsistent tension during forced drying.

[0047] Tested at room temperature 25℃, when the paint film thickness is 100 microns, the surface drying time is 4-6 hours; when the paint film thickness is 150 microns, the surface drying time is 6-8 hours. When the paint film thickness is 90-110 microns, the actual drying time takes 24-48 hours, which can be extended appropriately at low temperatures.

[0048] If the paint in the pool is not used for a long time and is not used to dip the pumping rod, it should be sealed and a layer of water should be sprayed on the paint surface for protection before sealing to reduce oxidation and peeling. If the paint peels due to inadequate maintenance, the peeling layer can be removed before use.

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

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

[0051] (2) transporting the sucker rod to the spraying machine through the transport device;

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

[0053] (4) Leave to dry or ventilate to dry, or bake.

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

[0055] As a preferred but not limiting example, in the above-described two methods of dip coating or spray coating of the sucker rod, the following can be used: Figure 2 The tooling shown in the figure, compared with the ordinary hanging basket, is provided with a partition plate 2 with a plurality of partition holes 5 at the upper end of the hanging 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 obliquely supported in each partition hole 5, and a groove 3 corresponding to the plurality of partition holes 5 is provided at the bottom end of the hanging basket body 1, which slightly limits the lower end of the sucker rod workpiece, and at the same time, the hoist (not shown in the figure) and the lifting rope 4 are increased to four places, which are evenly distributed around the upper end of the hanging basket body 1. In this way, whether it is during dipping or spraying, the four hoists can be retracted and released at different times, frequencies and / or pulling amplitudes (small amplitudes), so that the oil rod workpiece can be rolled and displaced along the inner wall of the partition hole 5 (such as Figure 2 As shown in A in the figure, it reduces the dead corners for coating.

[0056] Example 1

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

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

[0059] Deionized water is injected into the pull cylinder, and water-based dispersant, defoamer, leveling agent and wetting agent are added. After stirring evenly, carbon black is added and dispersed. The dispersed slurry is sent into the horizontal sand mill through a delivery pump, and the slurry is ground to a preset particle size. Water-based dispersant, defoamer, leveling agent, wetting agent, acrylic resin, petroleum resin, and asphalt are added to the ground slurry in turn, mixed, and 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 dip coating method described above. The paint film thickness is 120 microns and the surface is dry.

[0060] Example 2

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

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

[0063] Deionized water is injected into the pull cylinder, and water-based dispersant, defoamer, leveling agent and wetting agent are added. After stirring evenly, carbon black is added and dispersed. The dispersed slurry is sent into the horizontal sand mill through a delivery pump, and the slurry is ground to a preset particle size. Water-based dispersant, defoamer, leveling agent, wetting agent, acrylic resin, petroleum resin, and asphalt are added to the ground slurry in turn, mixed, and 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 dip coating method described above. The paint film thickness is 114 microns and the surface is dry.

[0064] Example 3

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

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

[0067] Deionized water is injected into the pull cylinder, and water-based dispersant, defoamer, leveling agent and wetting agent are added. After stirring evenly, carbon black is added and continued to disperse. The dispersed slurry is sent into the horizontal sand mill through a delivery pump, and the slurry is ground to a preset particle size. Water-based dispersant, defoamer, leveling agent, wetting agent, acrylic resin, petroleum resin, and asphalt are added to the ground slurry in turn, mixed, and 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 spraying method described above, with a paint film thickness of 102 microns and surface dry.

[0068] The surface paint layer of the sucker rods coated in accordance with Example 1, Example 2, and Example 3 is uniform and complete, and there is no dead angle of coating. The sucker rods coated with water-based asphalt paint in Example 1, Example 2, and Example 3 are subjected to the following experiments to detect their relevant properties as follows:

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

[0070] (2) The paint surface does not fall off after 350 hours of water immersion test.

[0071] (3) The softening point is 80℃ and it will not become sticky after high temperature baking.

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

[0073] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A water-based asphalt paint for a sucker rod, characterized in that: Including the following raw materials in percentage by mass: Acrylic resin 40%-45%, petroleum resin 6%-10%, asphalt 10%-15%, carbon black 2%-3%, water-based additive 4%-5%, deionized water 33%-38%.

2. A method for preparing a water-based asphalt paint for a sucker rod as claimed in claim 1, characterized in that: The following steps are involved: (1) Deionized water is injected into the pull cylinder, and the water-based additive is added. After stirring evenly, carbon black is added and the dispersion is continued for 40-60 minutes; (2) The dispersed slurry is fed into a horizontal sand mill through a delivery pump and ground to a preset particle size; (3) Add water-based additives, acrylic resin, petroleum resin, and asphalt to the ground slurry in sequence, mix them, and adjust the slurry to a preset viscosity.

3. The method for preparing water-based asphalt paint for sucker rods according to claim 2, characterized in that: Water-based additives include dispersants, defoamers, leveling agents, wetting agents and thickeners.

4. A method for using the water-based asphalt paint for sucker rods as claimed in claim 1, characterized in that: The method of use is dipping.

5. The method of use according to claim 4, characterized in that: The operation of the dip coating is as follows: (1) Pour water-based asphalt paint into the paint pool, stir thoroughly, and add 1%-2% water; (2) Clean the surface of the sucker rod to avoid oil stains, paint thinners or other chemical raw materials; (3) Immerse the sucker rod in the paint pool and leave it to stand, or vibrate it mechanically, so that the surface of the sucker rod is fully exposed to the water-based asphalt paint until the preset paint film thickness is reached; (4) Take out the sucker rod and leave it to dry naturally or through ventilation.

6. A method for using the water-based asphalt paint for sucker rods as claimed in claim 1, characterized in that: The method of use is spraying.

7. The method of use according to claim 6, characterized in that: The spraying operation is as follows: (1) Clean the surface of the sucker rod to be sprayed; (2) transporting the sucker rod to the spraying machine through the transport device; (3) Spray evenly onto the surface of the sucker rod until the preset paint film thickness is reached; (4) Leave to dry or ventilate to dry, or bake.

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