CN115972468B - Preparation method of anti-corrosion sleeve - Google Patents
Preparation method of anti-corrosion sleeve Download PDFInfo
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- CN115972468B CN115972468B CN202211529146.6A CN202211529146A CN115972468B CN 115972468 B CN115972468 B CN 115972468B CN 202211529146 A CN202211529146 A CN 202211529146A CN 115972468 B CN115972468 B CN 115972468B
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- 238000005260 corrosion Methods 0.000 title claims abstract description 165
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 229920002635 polyurethane Polymers 0.000 claims abstract description 141
- 239000004814 polyurethane Substances 0.000 claims abstract description 141
- 239000000463 material Substances 0.000 claims abstract description 102
- 239000004744 fabric Substances 0.000 claims abstract description 59
- 239000002245 particle Substances 0.000 claims abstract description 49
- 230000007797 corrosion Effects 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000003490 calendering Methods 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 24
- 229920000742 Cotton Polymers 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000007781 pre-processing Methods 0.000 claims description 10
- 239000003086 colorant Substances 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000010074 rubber mixing Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 description 36
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000032683 aging Effects 0.000 description 10
- 239000013535 sea water Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 230000008439 repair process Effects 0.000 description 6
- 238000003708 edge detection Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- 238000009849 vacuum degassing Methods 0.000 description 1
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Abstract
The embodiment of the disclosure discloses a preparation method of an anti-corrosion sleeve. One embodiment of the method comprises the following steps: calendaring the needled cotton and the grid cloth to generate composite cloth; drying the polyurethane particles to produce dried polyurethane particles; mixing the dry polyurethane particles, the wear-resistant agent and the reinforcing agent to generate a mixed polyurethane material; plasticizing the mixed polyurethane material to generate a plasticized polyurethane material; and (3) calendaring the plasticized polyurethane material and the composite cloth to generate the anti-corrosion sleeve. The preparation method of the anti-corrosion sleeve enables the prepared anti-corrosion sleeve to have good waterproof and wear-resistant properties, tensile strength, tearing strength and impact resistance, and low breakage probability, so that the corrosion probability of the marine structure wrapped by the anti-corrosion sleeve can be reduced, and the collapse probability of the marine structure is further reduced.
Description
Technical Field
The embodiment of the disclosure relates to the field of anti-corrosion sleeve preparation, in particular to a preparation method of an anti-corrosion sleeve.
Background
The ocean steel structures (such as wharf steel piles, drilling platform jacket steel piles or riser sleeves, wind power jacket steel piles and the like) in the spray splash zone and the sea water tidal range zone are always in a dry-wet alternating state due to periodic wetting of sea water, oxygen is sufficiently supplied, and serious corrosion damage can occur to the ocean structures such as piles, columns and the like due to synergistic effects of sunlight, wind, rain, waves and the like. When the marine structure is severely corroded and damaged, accidents such as collapse of the marine structure are likely to occur. Thus, there is a need for corrosion protection of marine structures. Currently, when preserving marine structures, the following methods are generally used: and (3) coating anti-corrosion paint on the surface of the protected object.
However, the inventors have found that when the marine structure is to be preserved in the above manner, there are often the following technical problems:
first, the anticorrosive paint that is in the area of splash of the spray and sea water tidal range for a long time exposes in the sea wind, sunshine and wave environment, under the impact of sea wind and spray, the coating drops easily, leads to the probability of breaking down higher, and because most marine steel structures are in the position of splash area of spray and sea water tidal range, cause repainting repair construction difficulty and consuming longer again, can not repair soon when the coating appears breaking down, cause marine structure to be corroded probability higher, lead to marine structure to take place the probability of collapsing higher.
Second, it is not determined whether there is a large breakage of the corrosion-resistant coating, further leading to a high probability of corrosion of the marine structure, resulting in a high probability of collapse of the marine structure.
Third, it is not determined whether the corrosion-resistant coating has a large number of bulges, and further the probability of corrosion of the marine structure is high, so that the probability of collapse of the marine structure is high.
The above information disclosed in this background section is only for enhancement of understanding of the background of the inventive concept and, therefore, may contain information that does not form the prior art that is already known to those of ordinary skill in the art in this country.
Disclosure of Invention
The disclosure is in part intended to introduce concepts in a simplified form that are further described below in the detailed description. The disclosure is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
Some embodiments of the present disclosure provide methods of making corrosion protection sleeves that address one or more of the technical problems noted in the background section above.
Some embodiments of the present disclosure provide a method of making an anti-corrosion sleeve, the method comprising: calendaring the needled cotton and the grid cloth to generate composite cloth; drying the polyurethane particles to produce dried polyurethane particles; mixing the dry polyurethane particles, the wear-resistant agent and the reinforcing agent to generate a mixed polyurethane material; plasticizing the mixed polyurethane material to generate a plasticized polyurethane material; and (3) carrying out calendaring treatment on the plasticized polyurethane material and the composite cloth to generate the anti-corrosion sleeve.
Optionally, the method further comprises: acquiring a first anti-corrosion sleeve image corresponding to the anti-corrosion sleeve, which is acquired by a camera device under a first target light source, and a second anti-corrosion sleeve image corresponding to the anti-corrosion sleeve, which is acquired by the camera device under a second target light source; respectively preprocessing the first anti-corrosion sleeve image and the second anti-corrosion sleeve image to obtain a first preprocessed anti-corrosion sleeve image corresponding to the first anti-corrosion sleeve image and a second preprocessed anti-corrosion sleeve image corresponding to the second anti-corrosion sleeve image; for each first pre-processed pixel block in the first pre-processed anti-corrosion sleeve image, determining the color similarity of the first pre-processed pixel block and the pixel block corresponding to the first pre-processed pixel block in the target anti-corrosion sleeve image as a first color similarity; each corresponding first preprocessing pixel block with the first color similarity meeting the preset color similarity condition is determined to be a first target pixel block, and a first target pixel block set is obtained; for each second pre-processed pixel block in the second pre-processed anti-corrosion sleeve image, determining the color similarity of the second pre-processed pixel block and the pixel block corresponding to the second pre-processed pixel block in the target anti-corrosion sleeve image as a second color similarity; determining each second preprocessed pixel block with the corresponding second color similarity meeting the preset color similarity condition as a second target pixel block to obtain a second target pixel block set; for each first target pixel block in the first target pixel block set, determining a texture similarity of the first target pixel block and a second target pixel block in the second target pixel block set corresponding to the first target pixel block; determining each first target pixel block with the corresponding texture similarity meeting the preset texture similarity condition as a target pixel block to obtain each target pixel block; determining damage size information corresponding to the anti-corrosion sleeve according to the position information of each target pixel block; and determining the anti-corrosion sleeve as a qualified anti-corrosion sleeve in response to the damage size information meeting a preset size condition.
Optionally, the method further comprises: acquiring a material image of the plasticized polyurethane material; denoising the material image to obtain a denoised material image; performing edge detection processing on the denoised material image to obtain at least one abnormal region corresponding to the denoised material image; determining a region area of each of the at least one abnormal region; determining an abnormal region with the corresponding region area meeting the preset abnormal region condition as a target abnormal region to obtain a target abnormal region set; determining the size of a circumscribed rectangle of each target abnormal region in the target abnormal region set; determining a target abnormal region with the corresponding circumscribed rectangle size meeting the preset size condition as a target bulge region, and obtaining a target bulge region set; determining the sum of areas of the target bulge areas in the target bulge area set as a bulge area; and controlling the grabbing mechanism to put the plasticized polyurethane material into a waste box in response to the bulge area being larger than or equal to a preset bulge area threshold.
The above embodiments of the present disclosure have the following advantageous effects: according to the preparation method of the anti-corrosion sleeve, disclosed by some embodiments, the prepared anti-corrosion sleeve has better waterproof wear resistance, tensile strength, tearing strength and impact resistance, and lower breakage probability, so that the corrosion probability of the marine structure wrapped by the anti-corrosion sleeve can be reduced, and the collapse probability of the marine structure is further reduced. Specifically, the reason why the probability of collapse of the marine structure is high is that: the anticorrosive paint in the splash zone and the sea water tidal range zone is exposed to sea wind, sunlight and sea wave for a long time, under the impact of the sea wind and the sea water tidal range zone, the coating is easy to fall off, so that the probability of damage is higher, and as most of marine steel structures are positioned at the positions of the splash zone and the sea water tidal range zone, the recoating repair construction is difficult and takes longer time, the repair cannot be fast performed when the coating is damaged, and the probability of corrosion of marine structures is higher. Based on this, the method of manufacturing the anti-corrosive sleeve of some embodiments of the present disclosure first performs a calendering process on the needled cotton and the mesh cloth to generate a composite cloth. Therefore, the grid cloth has higher tensile strength, tearing strength and impact resistance, so that the tensile strength, tearing strength and impact resistance of the obtained composite cloth can be improved. Next, the polyurethane particles are subjected to a drying treatment to produce dry polyurethane particles. Thus, moisture in the polyurethane particles can be removed and dried sufficiently. The dry polyurethane particles, the antiwear agent and the reinforcing agent are then mixed to form a mixed polyurethane material. Therefore, the polyurethane has high performances such as water resistance, wear resistance, high strength, difficult corrosion, aging resistance and the like, and the strength and the wear resistance of the mixed polyurethane material can be improved by adding the wear-resistant agent and the reinforcing agent. Therefore, the anti-corrosion sleeve has the performances of water resistance, wear resistance, high strength, difficult corrosion, aging resistance, high strength, wear resistance and the like. Thereby reducing the probability of corrosion of the clad structure. And plasticizing the mixed polyurethane material to generate a plasticized polyurethane material. Therefore, the mixed polyurethane material is plasticized, so that the solid plasticized polyurethane material can be obtained, and the anti-corrosion sleeve can be conveniently obtained through subsequent processing. And finally, carrying out calendaring treatment on the plasticized polyurethane material and the composite cloth to generate the anti-corrosion sleeve. Therefore, on the basis that polyurethane has high performances such as water resistance, wear resistance, high strength, difficult corrosion, aging resistance and the like, and the grid cloth has higher tensile strength, tearing strength and impact resistance, the obtained anti-corrosion sleeve has the water resistance, wear resistance, tensile strength, tearing strength and impact resistance. The obtained anti-corrosion sleeve has waterproof wear resistance, tensile strength, tearing strength and impact resistance, so that the damage probability of the anti-corrosion sleeve can be reduced. Therefore, the preparation method of the anti-corrosion sleeve of some embodiments of the present disclosure enables the prepared anti-corrosion sleeve to have better waterproof wear resistance, tensile strength, tear strength and impact resistance, and lower breakage probability, so that the corrosion probability of the marine structure wrapped by the anti-corrosion sleeve can be reduced, and the collapse probability of the marine structure is further reduced.
Drawings
The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.
Fig. 1 is a flow chart of some embodiments of a method of making a corrosion barrier according to the present disclosure.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.
The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.
The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a flow chart of some embodiments of a method of making a corrosion barrier according to the present disclosure. A flow 100 of some embodiments of a method of making a corrosion barrier according to the present disclosure is shown. The preparation method of the anti-corrosion sleeve comprises the following steps:
and 101, calendaring the needled cotton and the grid cloth to generate the composite cloth.
In some embodiments, the body of execution of the method of making the anti-corrosive sleeve (e.g., process machinery, which may include process robots, calenders, dry boxes, open mill, plastic extruders, etc.) may calender the needled cotton and scrim to create a composite cloth. The mesh fabric may be a fiber mesh fabric having elasticity. The thickness of the needled cotton may range from 3.5 to 4mm. The thickness of the mesh may range from 0.2 to 0.5mm. The width of the gate of the needled cotton and the width of the gate of the mesh cloth may be the same. In practice, the above-described executing body may calender the needled cotton and the mesh cloth in various ways to produce the composite cloth. Therefore, the grid cloth has higher tensile strength, tearing strength and impact resistance, so that the tensile strength, tearing strength and impact resistance of the obtained composite cloth can be improved.
In some optional implementations of some embodiments, the executing body may calender the needled cotton and the mesh fabric by a calender to generate the composite fabric. Wherein, the temperature set by the calender can be 160 ℃. In practice, first, the executing body may place the needled cotton and the mesh fabric on a calender, respectively. Then, the above mesh bonding surface may be heated to 160 ℃ by infrared heating. And then, the needled cotton and the grid cloth can be attached under the roller pressure of 45KG to obtain the thermal type composite cloth. Finally, the thermal type composite cloth can be cooled and shaped at normal temperature to generate the composite cloth. Therefore, the bonding surface of the needled cotton and the mesh cloth is heated and melted, so that the needled cotton and the mesh cloth are bonded more firmly.
Step 102, drying the polyurethane particles to produce dried polyurethane particles.
In some embodiments, the execution body may dry the polyurethane particles to generate dry polyurethane particles. Wherein the polyurethane particles may be thermoplastic polyurethane particles. In practice. The above-described execution body may subject polyurethane particles to a drying process in various ways to produce dried polyurethane particles. Thus, moisture in the polyurethane particles can be removed and dried sufficiently.
In some alternative implementations of some embodiments, the executing body may stir-dry the polyurethane particles through a drying oven. Wherein, the temperature set by the drying oven can be in the range of 95 ℃ to 100 ℃. The stirring period may range from 60 minutes to 120 minutes. In practice, the execution body may place the polyurethane particles in a drying oven, the temperature range may be set to 95 to 100 ℃, and the stirring time period may be set to 60 to 120 minutes. In practice, the above-described executing bodies may put polyurethane particles into a drying oven to be heated and stirred to produce dry polyurethane particles.
And 103, mixing the dried polyurethane particles, the wear-resistant agent and the reinforcing agent to generate a mixed polyurethane material.
In some embodiments, the executive body may mix the dry polyurethane particles, the antiwear agent, and the reinforcing agent to form a mixed polyurethane material. In practice, the executive body may mix the dry polyurethane particles, the antiwear agent, and the reinforcing agent in various ways to produce a mixed polyurethane material. Therefore, the polyurethane has high performances such as water resistance, wear resistance, high strength, difficult corrosion, aging resistance and the like, and the strength and the wear resistance of the mixed polyurethane material can be improved by adding the wear-resistant agent and the reinforcing agent. Therefore, the anti-corrosion sleeve has the performances of water resistance, wear resistance, high strength, difficult corrosion, aging resistance, high strength, wear resistance and the like. Thereby reducing the probability of corrosion of the clad structure.
In some alternative implementations of some embodiments, the executive may place the dry polyurethane particles, the antiwear agent, and the reinforcing agent into an open mill for mixing to create an initial mixed polyurethane material. In practice, the execution body may put the dry polyurethane particles, the wear-resistant agent and the reinforcing agent into an open rubber mixing mill, so that the dry polyurethane particles, the wear-resistant agent and the reinforcing agent are fully mixed, and the dry polyurethane particles, the wear-resistant agent and the reinforcing agent are rolled into particle-free blocks, thereby obtaining an initial mixed polyurethane material.
In some alternative implementations of some embodiments, the executive body may mix the dry polyurethane particles, the antiwear agent, the reinforcing agent, and the colorant to produce a mixed polyurethane material. In practice, the executive body may place the dry polyurethane particles with the antiwear agent, the reinforcing agent, and the colorant into an open mill to thoroughly mix the dry polyurethane particles with the antiwear agent, the reinforcing agent, and the colorant and roll them into particle-free blocks. Thus, a mixed polyurethane material of any color can be obtained by the colorant.
In some alternative implementations of some embodiments, the dry polyurethane particles, the antiwear agent, the reinforcing agent, and the colorant may have a mass ratio of 83 to 77:8-10:3-5:6-8. Therefore, on the basis that the polyurethane has high performances such as water resistance, wear resistance, high strength, difficult corrosion, aging resistance and the like, the tensile strength, the tearing strength and the impact resistance are improved, and the damage probability of the anti-corrosion sleeve can be further reduced. And products with different colors can be produced according to requirements.
And 104, plasticizing the mixed polyurethane material to generate a plasticized polyurethane material.
In some embodiments, the executing body may plasticize the mixed polyurethane material to generate a plasticized polyurethane material. In practice, the execution body may plasticize the mixed polyurethane material in various ways to generate a plasticized polyurethane material. Therefore, the mixed polyurethane material is plasticized, so that the solid plasticized polyurethane material can be obtained, and the anti-corrosion sleeve can be conveniently obtained through subsequent processing.
In some optional implementations of some embodiments, the executing body may put the mixed polyurethane material into a plastic extruder under a vacuum condition to extrude and plasticize the mixed polyurethane material, so as to obtain a plasticized polyurethane material. In practice, the execution body can put the mixed polyurethane material into a plastic extruder for extrusion plasticization. And vacuum degassing is carried out in the plasticizing process. Therefore, the probability of air holes in the plasticized polyurethane material can be reduced, the service performance of the plasticized polyurethane material is improved, the tensile strength, the tearing strength and the impact resistance of the polyurethane product are ensured, and the damage probability of the anti-corrosion sleeve is reduced.
And 105, calendering the plasticized polyurethane material and the composite cloth to generate the anti-corrosion sleeve.
In some embodiments, the executing body may calender the plasticized polyurethane material and the composite cloth to form the anti-corrosive sleeve. In practice, the above-mentioned executing body may carry out calendering treatment on the plasticized polyurethane material and the composite cloth in various ways to produce the anti-corrosive sleeve. Therefore, on the basis that polyurethane has high performances such as water resistance, wear resistance, high strength, difficult corrosion, ageing resistance and the like, the grid cloth has higher tensile strength, tearing strength and impact resistance, so that the obtained anti-corrosion sleeve has water resistance, wear resistance, tensile strength, tearing strength and impact resistance, the damage probability of the anti-corrosion sleeve is lower, the corrosion probability of the marine structure wrapped by the anti-corrosion sleeve can be reduced, and the collapse probability of the marine structure is further reduced.
Here, the specific manner of wrapping the marine structure with the above-described anti-corrosive jacket is not limited. As an example, flanges may be provided at both ends of the anti-corrosive sleeve. The anti-corrosion sleeve can surround the surface of the marine structure. Flanges at two ends of the anti-corrosion sleeve can be fastened and connected to wrap the anti-corrosion sleeve on the marine structure. And the plasticized polyurethane material of the coated anti-corrosion sleeve can be outside. And the flange connection mode of the two ends can be bolt connection.
In some alternative implementations of some embodiments, the executing body may calender the plasticized polyurethane material and the composite cloth by a calender to create the anti-corrosive sleeve. Wherein, the temperature set by the calender can be 160 ℃ to 170 ℃. The interval between the rollers set by the calender can be 1.5mm. The rotation speed ratio of the four rollers set in the calender can be 1:1.1:1.25:1.4. In practice, the executing main body can set the temperature of the calender to 160-170 ℃, the rotation speed ratio of the four-stage roller to 1:1.1:1.25:1.4, the plasticized polyurethane material is put in, the roller spacing is adjusted to enable the average thickness of a film to be 1.5mm, the traction speed of the calender is adjusted to 12m/min, and the composite cloth is heated to 195 ℃ by adopting infrared heating. And (3) attaching the plasticized polyurethane material to the composite cloth under the pressure of 50KG rollers to obtain the anti-corrosion sleeve. Therefore, the probability that the plasticized polyurethane material and the composite cloth cannot be fully attached can be reduced due to the lower traction speed.
In some alternative implementations of some embodiments, the executing body may perform a calendaring cooling process on the plasticized polyurethane material and the composite cloth to create the anti-corrosive sleeve. In practice, the execution main body can attach the plasticized polyurethane material and the composite cloth through the calender and place the plasticized polyurethane material and the composite cloth in normal temperature, so that the attached plasticized polyurethane material and the composite cloth are cooled to generate the anti-corrosion sleeve.
Optionally, the above execution body may further execute the following steps:
the method comprises the steps of firstly, acquiring a first anti-corrosion sleeve image corresponding to the anti-corrosion sleeve, which is acquired by a camera device under a first target light source, and acquiring a second anti-corrosion sleeve image corresponding to the anti-corrosion sleeve, which is acquired by the camera device under a second target light source. Wherein, the first target light source and the second target light source may be devices for illumination. For example, the first target light source and the second target light source may each be a flash lamp. The positions at which the first target light source and the second target light source are disposed may be different.
And a second step of respectively preprocessing the first anti-corrosion sleeve image and the second anti-corrosion sleeve image to obtain a first preprocessed anti-corrosion sleeve image corresponding to the first anti-corrosion sleeve image and a second preprocessed anti-corrosion sleeve image corresponding to the second anti-corrosion sleeve image. In practice, the execution subject may perform preprocessing on the first anticorrosion jacket image and the second anticorrosion jacket image, respectively, in the following manner: first, the first and second anti-corrosion sleeve images may be subjected to grayscale processing, respectively, to obtain a first grayscale image corresponding to the first anti-corrosion sleeve image and a second grayscale image corresponding to the second anti-corrosion sleeve image. As an example, the manner of the above-described graying process may include, but is not limited to, at least one of: maximum value method, weighted average method, component method. Then, the first and second grayscale images may be subjected to contrast enhancement processing, respectively, to obtain a first contrast enhanced image corresponding to the first grayscale image and a second contrast enhanced image corresponding to the second grayscale image. As an example, the manner of the contrast enhancement process described above may include, but is not limited to, at least one of: linear gray scale transformation, histogram equalization. And finally, respectively carrying out filtering denoising treatment on the first contrast enhancement image and the second contrast enhancement image to obtain a first pre-treated anti-corrosion sleeve image corresponding to the first anti-corrosion sleeve image and a second pre-treated anti-corrosion sleeve image corresponding to the second anti-corrosion sleeve image. As an example, the manner of the contrast enhancement process described above may include, but is not limited to, at least one of: mean value filtering, median filtering and Gaussian filtering.
And thirdly, determining the color similarity of the first preprocessed pixel block and the pixel block corresponding to the first preprocessed pixel block in the target anti-corrosion sleeve image as the first color similarity for each first preprocessed pixel block in the first preprocessed anti-corrosion sleeve image. The target anti-corrosion sleeve image may be an image of an anti-corrosion sleeve in which no damage exists. In practice, for each first pre-processed pixel block in the first pre-processed anti-corrosion sleeve image, the execution body may determine, by using a color similarity algorithm, a color similarity of the first pre-processed pixel block and a pixel block corresponding to the first pre-processed pixel block in the target anti-corrosion sleeve image, as the first color similarity. As an example, the color similarity algorithm described above may be, but is not limited to, any of the following: RGB similar color approximation algorithm, color histogram. As yet another example, the execution body may further determine color similarities of the first pre-processed pixel block and a pixel block corresponding to the first pre-processed pixel block in the target anti-corrosion sleeve image according to two or more color similarity algorithms, and perform weight equalization processing on the obtained color similarities, so as to generate the first color similarity.
Fourth, determining each corresponding first preprocessed pixel block with the first color similarity meeting the preset color similarity condition as a first target pixel block, and obtaining a first target pixel block set. The preset color similarity condition may be that a first color similarity corresponding to the first preprocessed pixel block is less than or equal to a preset color similarity threshold.
And fifthly, for each second pre-processed pixel block in the second pre-processed anti-corrosion sleeve image, determining the color similarity of the second pre-processed pixel block and the pixel block corresponding to the second pre-processed pixel block in the target anti-corrosion sleeve image, and taking the color similarity as a second color similarity. In practice, for each second pre-processed pixel block in the second pre-processed anti-corrosion sleeve image, the execution body may determine, by using a color similarity algorithm, a color similarity of the second pre-processed pixel block and a pixel block corresponding to the second pre-processed pixel block in the target anti-corrosion sleeve image, as a second color similarity.
And sixthly, determining each second preprocessed pixel block with the corresponding second color similarity meeting the preset color similarity condition as a second target pixel block, and obtaining a second target pixel block set.
Seventh, for each first target pixel block in the first target pixel block set, determining a texture similarity of the first target pixel block and a second target pixel block in the second target pixel block set, the second target pixel block corresponding to the first target pixel block. In practice, for each first target pixel block in the first set of target pixel blocks, the execution body may determine a texture similarity of a second target pixel block in the first set of target pixel blocks and the second set of target pixel blocks corresponding to the first target pixel block by a texture similarity algorithm. As an example, the texture similarity algorithm described above may be, but is not limited to, any of the following: GLCM (Gray-level Co-occurrence Matrix, gray-Co-occurrence matrix), LBP (Local Binary Pattern ). As yet another example, the execution body may further determine the similarity of the second target pixel block corresponding to the first target pixel block in the first target pixel block set and the second target pixel block set according to two or more texture similarity algorithms, and perform weight equalization processing on each of the obtained texture similarities to generate the texture similarity.
And eighth, determining each first target pixel block with the corresponding texture similarity meeting the preset texture similarity condition as a target pixel block, and obtaining each target pixel block. The texture similarity condition may be that the texture similarity corresponding to the first target pixel block is greater than or equal to a preset texture similarity threshold.
And ninth, determining the damage size information of the corresponding anti-corrosion sleeve according to the position information of each target pixel block. In practice, first, the execution body may determine, as the broken lateral value corresponding to the anti-corrosive sleeve, an absolute value of a difference between the abscissa of the target pixel block having the smallest abscissa and the abscissa of the target pixel block having the largest abscissa among the target pixel blocks. Then, the execution body may determine an absolute value of a difference between an ordinate of a target pixel block having a smallest ordinate and an ordinate of a target pixel block having a largest ordinate among the respective target pixel blocks as a broken longitudinal value corresponding to the anti-corrosive sleeve. And finally, filling the damage transverse value and the damage longitudinal value into a template with a preset size to generate damage size information corresponding to the anti-corrosion sleeve. The predetermined size template may be "the broken length is equal to the broken width". The first transverse line is used for filling the broken transverse value. The second transverse direction is used to fill the broken longitudinal value.
And tenth, determining the anti-corrosion sleeve as a qualified anti-corrosion sleeve in response to the damage size information meeting a preset size condition. The preset size condition may be that a breakage transverse value corresponding to the breakage size information is smaller than a preset breakage transverse threshold value and a breakage longitudinal value corresponding to the breakage size information is smaller than a preset breakage longitudinal threshold value.
The above-mentioned related matters are taken as an invention point of the present disclosure, and thus the second technical problem mentioned in the background art is solved, that whether the anticorrosive coating is damaged greatly is not determined, and further, the probability of causing the marine structure to be corroded is high, and the probability of causing the marine structure to collapse is high. Factors that further lead to a higher probability of collapse of the marine structure tend to be as follows: it is not determined whether there is a large damage to the corrosion-resistant coating, resulting in a high probability of corrosion of the marine structure. If the above factors are solved, the effect of further reducing the probability of collapse of the marine structure can be achieved. In order to achieve the effect, images of the anti-corrosion sleeve under illumination of two different positions are collected, and color comparison is carried out on the collected two images and the image of the anti-corrosion sleeve without damage, so that pixel blocks with low similarity can be screened out, namely, pixel blocks with damage can be represented in the two images. And the images under two different lights are collected for processing, so that the probability of determining breakage can be improved. Then, texture similarity detection can be performed on pixel blocks representing the existence of breakage in the two images, so that image blocks with similar textures can be screened out to serve as pixel blocks representing the existence of breakage. Thereby further improving the accuracy of screening out pixel blocks representing the existence of breakage. Finally, the broken size information may be determined from the pixel block where the break exists. Thus, the anti-corrosion sleeve with less damage can be screened out. Thus, the probability of corrosion of the marine structure can be reduced, thereby reducing the probability of collapse of the marine structure.
Optionally, the above execution body may further execute the following steps:
and firstly, acquiring a material image of the plasticized polyurethane material. In practice, the execution body may acquire the material image of the plasticized polyurethane material acquired by the associated image pickup device.
And secondly, denoising the material image to obtain a denoised material image. In practice, the execution subject may perform denoising processing on the material image through various denoising algorithms, so as to obtain a denoised material image. The denoising algorithm may include, but is not limited to, at least one of: neighborhood averaging, median filtering and low pass filtering.
And thirdly, carrying out edge detection processing on the denoised material image to obtain at least one abnormal region corresponding to the denoised material image. The abnormal region may be a region representing a bulge, noise, or the like existing in the denoised material image. For example, the abnormal region may be a coordinate pair. In practice, the execution body may perform edge detection processing on the denoised material image through various edge detection algorithms, so as to obtain at least one abnormal region corresponding to the denoised material image. The edge detection algorithm may include, but is not limited to, at least one of: canny operator, roberts operator, prewitt operator, sobel operator.
Fourth, determining the area of each abnormal region in the at least one abnormal region. In practice, for each of the at least one abnormal region, the execution subject may determine, as a region area corresponding to the abnormal region, a sum of areas of pixel points corresponding to the abnormal region in the denoised material image.
And fifthly, determining an abnormal region with the corresponding region area meeting the preset abnormal region condition as a target abnormal region, and obtaining a target abnormal region set. The preset abnormal area condition may be that the area of the area corresponding to the abnormal area is greater than a first preset abnormal area threshold and less than a second preset abnormal area threshold. The range from the first preset abnormal area threshold to the second preset abnormal area threshold may be a range of a bulge area.
And sixthly, determining the size of the circumscribed rectangle of each target abnormal region in the target abnormal region set. The dimensions of the circumscribed rectangle may include a length and a width of the circumscribed rectangle.
And seventh, determining a target abnormal region with the size meeting the preset size condition of the corresponding circumscribed rectangle as a target bulge region, and obtaining a target bulge region set. The preset size condition may be that the length of the size representation of the circumscribed rectangle corresponding to the target abnormal region is within a preset length range, and the width of the size representation of the corresponding circumscribed rectangle is within a preset width range.
Eighth, determining the sum of areas of the respective target bulge areas in the target bulge area set as a bulge area.
And ninth, controlling a grabbing mechanism to put the plasticized polyurethane material into a waste bin in response to the bulge area being larger than or equal to a preset bulge area threshold. The grabbing mechanism can be a mechanism for grabbing the plasticized polyurethane material. For example, the gripping mechanism may be a robot.
The above-mentioned related matters are taken as an invention point of the present disclosure, and thus the third technical problem mentioned in the background art is solved, that whether the anticorrosive coating has a large number of bulges is not determined, and further the probability of corroding the marine structure is higher, so that the probability of collapsing the marine structure is higher. Factors that further lead to a higher probability of collapse of the marine structure tend to be as follows: it is not determined whether there are a large number of bulges in the corrosion-resistant coating, and the probability of corrosion of the marine structure is further high. If the above factors are solved, the effect of further reducing the probability of collapse of the marine structure can be achieved. To achieve this effect, first, an area in which an abnormality exists in the plasticized polyurethane material is determined, whereby an area in which an abnormality exists in the plasticized polyurethane material can be determined. Then, the area of the abnormal region may be determined first, and screening may be performed according to the area range of the bulge. Thus, the outlier region characterized as noise or other non-characterized bulge may be removed from the outlier region set. Thereby further improving the accuracy of screening out the abnormal region representing the bulge. Thereafter, the abnormal region can be further screened for length and width. Thus, the accuracy of screening out abnormal areas representing bulges is further improved. And finally, determining the total area of all areas representing the bulges, thereby determining whether the plasticized polyurethane material has more bulges, removing the plasticized polyurethane material by the plasticized polyurethane material having more bulges, and only keeping the plasticized polyurethane material with less or no bulges so as to ensure that the subsequently obtained anti-corrosion sleeve has higher ductility and higher impact resistance, so that the corrosion probability of the marine structure can be reduced, and the collapse probability of the marine structure is reduced.
The above embodiments of the present disclosure have the following advantageous effects: according to the preparation method of the anti-corrosion sleeve, disclosed by some embodiments, the prepared anti-corrosion sleeve has better waterproof wear resistance, tensile strength, tearing strength and impact resistance, and lower breakage probability, so that the corrosion probability of the marine structure wrapped by the anti-corrosion sleeve can be reduced, and the collapse probability of the marine structure is further reduced. Specifically, the reason why the probability of collapse of the marine structure is high is that: the anticorrosive paint in the splash zone and the sea water tidal range zone is exposed to sea wind, sunlight and sea wave for a long time, under the impact of the sea wind and the sea water tidal range zone, the coating is easy to fall off, so that the probability of damage is higher, and as most of marine steel structures are positioned at the positions of the splash zone and the sea water tidal range zone, the recoating repair construction is difficult and takes longer time, the repair cannot be fast performed when the coating is damaged, and the probability of corrosion of marine structures is higher. Based on this, the method of manufacturing the anti-corrosive sleeve of some embodiments of the present disclosure first performs a calendering process on the needled cotton and the mesh cloth to generate a composite cloth. Therefore, the grid cloth has higher tensile strength, tearing strength and impact resistance, so that the tensile strength, tearing strength and impact resistance of the obtained composite cloth can be improved. Next, the polyurethane particles are subjected to a drying treatment to produce dry polyurethane particles. Thus, moisture in the polyurethane particles can be removed and dried sufficiently. The dry polyurethane particles, the antiwear agent and the reinforcing agent are then mixed to form a mixed polyurethane material. Therefore, the polyurethane has high performances such as water resistance, wear resistance, high strength, difficult corrosion, aging resistance and the like, and the strength and the wear resistance of the mixed polyurethane material can be improved by adding the wear-resistant agent and the reinforcing agent. Therefore, the anti-corrosion sleeve has the performances of water resistance, wear resistance, high strength, difficult corrosion, aging resistance, high strength, wear resistance and the like. Thereby reducing the probability of corrosion of the clad structure. And plasticizing the mixed polyurethane material to generate a plasticized polyurethane material. Therefore, the mixed polyurethane material is plasticized, so that the solid plasticized polyurethane material can be obtained, and the anti-corrosion sleeve can be conveniently obtained through subsequent processing. And finally, carrying out calendaring treatment on the plasticized polyurethane material and the composite cloth to generate the anti-corrosion sleeve. Therefore, on the basis that polyurethane has high performances such as water resistance, wear resistance, high strength, difficult corrosion, aging resistance and the like, and the grid cloth has higher tensile strength, tearing strength and impact resistance, the obtained anti-corrosion sleeve has the water resistance, wear resistance, tensile strength, tearing strength and impact resistance. The obtained anti-corrosion sleeve has waterproof wear resistance, tensile strength, tearing strength and impact resistance, so that the damage probability of the anti-corrosion sleeve can be reduced. Therefore, the preparation method of the anti-corrosion sleeve of some embodiments of the present disclosure enables the prepared anti-corrosion sleeve to have better waterproof wear resistance, tensile strength, tear strength and impact resistance, and lower breakage probability, so that the corrosion probability of the marine structure wrapped by the anti-corrosion sleeve can be reduced, and the collapse probability of the marine structure is further reduced.
The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the invention. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.
Claims (9)
1. A method for preparing an anti-corrosion sleeve, comprising:
calendaring the needled cotton and the grid cloth to generate composite cloth;
drying the polyurethane particles to produce dried polyurethane particles;
mixing the dry polyurethane particles, the wear-resistant agent and the reinforcing agent to generate a mixed polyurethane material;
plasticizing the mixed polyurethane material to generate a plasticized polyurethane material;
calendering the plasticized polyurethane material and the composite cloth to generate an anti-corrosion sleeve, wherein the anti-corrosion sleeve is used for determining whether the polyurethane material is qualified or not by executing the following steps:
Acquiring a first anti-corrosion sleeve image corresponding to the anti-corrosion sleeve, which is acquired by a camera device under a first target light source, and a second anti-corrosion sleeve image corresponding to the anti-corrosion sleeve, which is acquired by the camera device under a second target light source, wherein the first target light source and the second target light source are flash lamps, and the positions of the first target light source and the second target light source are different;
respectively preprocessing the first anti-corrosion sleeve image and the second anti-corrosion sleeve image to obtain a first preprocessed anti-corrosion sleeve image corresponding to the first anti-corrosion sleeve image and a second preprocessed anti-corrosion sleeve image corresponding to the second anti-corrosion sleeve image;
for each first pre-processing pixel block in the first pre-processing anti-corrosion sleeve image, determining the color similarity of the first pre-processing pixel block and the pixel block corresponding to the first pre-processing pixel block in the target anti-corrosion sleeve image as a first color similarity;
each corresponding first preprocessing pixel block with the first color similarity meeting the preset color similarity condition is determined to be a first target pixel block, and a first target pixel block set is obtained;
for each second pre-processed pixel block in the second pre-processed anti-corrosion sleeve image, determining the color similarity of the second pre-processed pixel block and the pixel block corresponding to the second pre-processed pixel block in the target anti-corrosion sleeve image as a second color similarity;
Determining each second preprocessed pixel block with the corresponding second color similarity meeting the preset color similarity condition as a second target pixel block, and obtaining a second target pixel block set;
for each first target pixel block in the first target pixel block set, determining a texture similarity of a second target pixel block in the first target pixel block and the second target pixel block set corresponding to the first target pixel block;
determining each first target pixel block with the corresponding texture similarity meeting the preset texture similarity condition as a target pixel block to obtain each target pixel block;
determining damage size information corresponding to the anti-corrosion sleeve according to the position information of each target pixel block;
and determining the anti-corrosion sleeve as a qualified anti-corrosion sleeve in response to the damage size information meeting a preset size condition.
2. The method of claim 1, wherein the calendaring the needled cotton and scrim to produce the composite cloth comprises:
and (3) carrying out calendaring treatment on the needled cotton and the grid cloth through a calendar to generate the composite cloth, wherein the temperature set by the calendar is 160 ℃.
3. The method of claim 1, wherein the drying the polyurethane particles to produce dried polyurethane particles comprises:
And (3) stirring and drying the polyurethane particles through a drying box, wherein the temperature set by the drying box ranges from 95 ℃ to 100 ℃, and the stirring time ranges from 60 minutes to 120 minutes.
4. The method of claim 1, wherein the mixing the dry polyurethane particles, the antiwear agent, and the reinforcing agent to form a mixed polyurethane material comprises:
and (3) putting the dry polyurethane particles, the wear-resisting agent and the reinforcing agent into an open rubber mixing mill for mixing treatment so as to generate an initial mixed polyurethane material.
5. The method of claim 4, wherein the mixing the dry polyurethane particles, the antiwear agent, and the reinforcing agent to form a mixed polyurethane material comprises:
and mixing the dry polyurethane particles, the wear-resistant agent, the reinforcing agent and the colorant to form a mixed polyurethane material.
6. The method of claim 5, wherein the mass ratio of the dry polyurethane particles, the antiwear agent, the reinforcing agent, and the colorant is 83-77:8-10:3-5:6-8.
7. The method of claim 1, wherein plasticizing the mixed polyurethane material to produce a plasticized polyurethane material comprises:
And under the vacuum condition, the mixed polyurethane material is put into a plastic extruder for extrusion plasticizing, and the plasticized polyurethane material is obtained.
8. The method of claim 1, wherein the calendaring the plasticized polyurethane material and the composite cloth to form a corrosion resistant sleeve comprises:
and (3) carrying out calendaring treatment on the plasticized polyurethane material and the composite cloth through a calendaring machine to generate an anti-corrosion sleeve, wherein the temperature set by the calendaring machine ranges from 160 ℃ to 170 ℃, the spacing between rollers set by the calendaring machine is 1.5mm, and the rotation speed ratio of four rollers set in the calendaring machine is 1:1.1:1.25:1.4.
9. The method of one of claims 1-8, wherein the calendaring the plasticized polyurethane material and the composite cloth to create a corrosion resistant jacket comprises:
and carrying out calendaring cooling treatment on the plasticized polyurethane material and the composite cloth to generate the anti-corrosion sleeve.
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