CN117757295A - A kind of plastic powder and a method for applying the plastic powder to the inner wall of tubular metal - Google Patents
A kind of plastic powder and a method for applying the plastic powder to the inner wall of tubular metal Download PDFInfo
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- CN117757295A CN117757295A CN202311774220.5A CN202311774220A CN117757295A CN 117757295 A CN117757295 A CN 117757295A CN 202311774220 A CN202311774220 A CN 202311774220A CN 117757295 A CN117757295 A CN 117757295A
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Abstract
本发明涉及塑料粉末应用技术领域，特别是一种塑料粉末及该塑料粉末涂抹于管状金属内壁的方法，包括功能性粉末、磁性纳米颗粒、纳米二氧化硅颗粒和粘合剂，所述功能性粉末的重量份为80～100份，所述磁性纳米颗粒的重量份为8～12份，所述纳米二氧化硅颗粒的重量份为10～14份，所述粘合剂的重量份为4～7份，该塑料粉末在涂抹时，通过线性磁场的夹持，可以实现对金属管内壁的均匀涂抹，形成的保护膜均匀度好，且现有的喷枪也很难适用于管状金属内壁的喷涂。
The present invention relates to the technical field of plastic powder application, in particular to a plastic powder and a method for applying the plastic powder to the inner wall of a tubular metal, including functional powder, magnetic nanoparticles, nanosilica particles and adhesives. The functional powder The weight part of the powder is 80-100 parts, the weight part of the magnetic nanoparticles is 8-12 parts, the weight part of the nano-silica particles is 10-14 parts, and the weight part of the adhesive is 4 ~7 parts. When the plastic powder is applied, it can be evenly applied to the inner wall of the metal pipe through the clamping of the linear magnetic field. The formed protective film has good uniformity, and the existing spray gun is also difficult to apply to the inner wall of the tubular metal. Spray.
Description
Technical Field
The invention relates to the technical field of plastic powder application, in particular to plastic powder and a method for coating the plastic powder on the inner wall of tubular metal.
Background
The plastic powder is a high molecular compound, and can play roles in corrosion resistance, oxidation resistance and the like when being sprayed on metal, so that the performance of the metal in use is improved, and in actual use, in order to improve the performance of the plastic powder, plasticizers, stabilizers, lubricants, pigments and the like are also added into the plastic powder;
when the plastic powder is used for metal, a worker firstly smears (or sprays) the plastic powder on the metal, then melts, levels and cures the plastic powder in a baking and curing mode, and forms a layer of protective film on the surface of the metal to realize the protection of the plastic powder on the metal, but the existing metal powder smearing (or spraying) mode is only suitable for the surface of the metal, and the existing smearing (or spraying) mode is difficult to be suitable for the inner wall of the tubular metal, and when the plastic layer formed on the inner wall of the tubular metal is smeared (or sprayed), the plastic layer formed on the inner wall of the tubular metal is uneven, and the existing spray gun is also difficult to be suitable for the spraying of the inner wall of the tubular metal; accordingly, there is a need for improvements in the art to address the above-described problems.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
In order to solve the technical problems, the invention provides the following technical scheme: the plastic powder comprises 80-100 parts by weight of functional powder, 8-12 parts by weight of magnetic nanoparticles, 10-14 parts by weight of nano silicon dioxide particles and 4-7 parts by weight of adhesive.
As a preferred embodiment of the plastic powder according to the invention, there is provided: the functional powder comprises 80 parts by weight, 12 parts by weight of the magnetic nano particles, 10 parts by weight of the nano silicon dioxide particles and 7 parts by weight of the adhesive.
As a preferred embodiment of the plastic powder according to the invention, there is provided: the functional powder comprises 100 parts by weight of magnetic nanoparticles, 8 parts by weight of nano silicon dioxide particles, 14 parts by weight of nano silicon dioxide particles and 4 parts by weight of adhesive.
As a preferred embodiment of the plastic powder according to the invention, there is provided: the preparation method comprises the following steps of;
s1: placing the magnetic nano particles, the nano silicon dioxide particles and the adhesive in a centrifugal stirrer to stir for 0.5-1 h;
s2: heating the functional powder to enable the functional powder to be melted into a liquid state, and adding the mixture prepared in the step S1 into the liquid functional powder to stir for 20-40 min;
s3: after the mixture is cooled and solidified, placing the solidified mixture into a superfine pulverizer to pulverize;
s4: sieving the crushed material with a 100-200 mesh sieve to obtain target powder.
As a preferred embodiment of the plastic powder according to the invention, there is provided: step S2 may be replaced by burning the functional powder to make it gaseous, and conveying the gaseous functional powder into a mixer to mix with the mixture prepared in step S1.
As a preferred embodiment of the plastic powder according to the invention, there is provided: the average pore diameter of the nano silicon dioxide particles is 15-20 nm, and the average diameter of the magnetic nano particles is 12-18 nm.
As a preferred embodiment of the plastic powder according to the invention, there is provided: the magnetic nano particles are made of at least one of iron, cobalt and nickel.
The beneficial effects of the invention are as follows: according to the plastic powder, the magnetic nano particles are filled into the aperture of the nano silicon dioxide particles in a centrifugal stirring mode, then the functional powder is attached to the aperture and the surface of the nano silicon dioxide particles, and the plastic powder is greatly influenced by magnetism, so that the follow-up spraying or smearing of the inner wall of the metal tube is facilitated through the influence of a magnetic field on the plastic powder.
In order to solve the technical problems, the invention also provides the following technical scheme: a method for coating plastic powder on the inner wall of tubular metal, which comprises the following steps of;
s1: adding the prepared plastic powder through a feed inlet of a high-pressure spray gun;
s2: the metal pipe to be treated is arranged on one side of the electromagnetic plate in a limiting mode, and a gun rod of the spray gun extends into the metal pipe;
s3: the magnetic field is kept fixed, the position of the spray gun is kept fixed, and after the spray gun begins to spray, the metal tube is uniformly rotated and simultaneously uniformly moved along the axial direction of the metal tube, so that the inner wall of the metal tube is smeared;
s4: after the coating is finished, the metal tube is baked and cured at the temperature of 180-190 ℃;
s5: and (3) after baking, cooling the metal tube at normal temperature to obtain a finished product after smearing.
As a preferred embodiment of the method for applying plastic powder to the inner wall of a tubular metal according to the present invention, wherein: step S3 can be replaced by keeping the position of the spray gun fixed, and after the spray gun begins to spray, uniformly rotating the magnetic field by taking the axis of the metal tube as the axis and simultaneously uniformly moving the metal tube along the axis direction of the metal tube so as to smear the inner wall of the metal tube.
As a preferred embodiment of the method for applying plastic powder to the inner wall of a tubular metal according to the present invention, wherein: step S3 can be replaced by keeping the position of the metal tube to rotate, and after the spray gun begins to spray, uniformly moving the spray gun and the magnetic field along the axial direction of the metal tube to smear the inner wall of the metal tube.
The invention has the following beneficial effects: when the coating method is used, after plastic powder is sprayed out of the spray gun, through the arrangement of the linear magnetic field on the outer side of the metal tube, after the plastic powder is sprayed out, the magnetic nano particles are influenced by the magnetic field, the plastic powder can directly impact on the inner wall of the metal tube and is adsorbed, so that the coating of the inner wall of the metal tube is completed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a flow chart of a method of applying plastic powder to an inner wall of a tubular metal according to the present invention.
FIG. 2 is a flow chart of a method for preparing plastic powder according to the present invention.
Fig. 3 is a state diagram of the plastic powder coated on the inner wall of the tubular metal according to the present invention.
Fig. 4 is a state diagram showing another plastic powder coated on the inner wall of a tubular metal according to the present invention.
Fig. 5 is a state diagram showing a further plastic powder coated on the inner wall of a tubular metal according to the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Referring to fig. 2, the present invention is a plastic powder, comprising 80-100 parts by weight of functional powder, 8-12 parts by weight of magnetic nanoparticles, 10-14 parts by weight of nano silica particles, and 4-7 parts by weight of adhesive, wherein the functional powder is composed of synthetic resin and additives such as filler, plasticizer, stabilizer, lubricant, pigment, etc.;
the average pore diameter of the nano silicon dioxide particles is 15-20 nm, the average diameter of the magnetic nano particles is 12-18 nm, and the materials of the magnetic nano particles comprise at least one of iron, cobalt and nickel so as to realize magnetic adsorption.
The preparation method of the plastic powder comprises the following steps;
s1: placing the magnetic nano particles, the nano silicon dioxide particles and the adhesive in a centrifugal stirrer to stir for 0.5-1 h at the rotating speed of 2000-3600rpm so as to fill the magnetic nano particles in the pore diameters of the nano silicon dioxide particles, wherein the adhesive can be used for realizing the adhesion between the magnetic nano particles and the nano silicon dioxide particles;
s2: heating the functional powder to enable the functional powder to be melted into a liquid state, adding the mixture prepared in the step S1 into the liquid functional powder, and stirring for 20-40 min at the rotating speed of 200-400rpm, so that full mixing is realized, and the functional powder is filled in the pore diameter of the nano silicon dioxide particles and is adhered to the outer surfaces of the nano silicon dioxide particles;
s3: after the mixture is cooled and solidified, placing the solidified mixture into a superfine pulverizer to pulverize for 20-30 min, wherein the rotating speed is 2000-6000 rpm;
s4: sieving the crushed material with a 100-200 mesh sieve to obtain target powder.
Referring to fig. 1 and 3, the present invention further includes a method for applying plastic powder to an inner wall of a tubular metal, the method for applying plastic powder comprising the steps of;
s1: the prepared plastic powder is added through a feed inlet of a high-pressure spray gun, and the plastic powder is driven to flow by high-pressure air, and certain solvent can be added into the plastic powder to be liquid in actual use, and the plastic powder is atomized and sprayed out;
s2: the method comprises the steps of limiting and installing a metal pipe to be treated on one side of an electromagnetic plate, extending a gun rod of a spray gun into the metal pipe, and enabling the magnetic field line direction of a linear magnetic field to be perpendicular to the axis of the metal pipe;
s3: the magnetic field is kept fixed, the position of the spray gun is kept fixed, and after the spray gun begins to spray, the metal tube is uniformly rotated and simultaneously uniformly moved along the axial direction of the metal tube, so that the inner wall of the metal tube is smeared;
s4: after the coating is finished, the metal tube is baked and cured at the temperature of 180-190 ℃ for 20-45 min;
s5: and (3) after baking, cooling the metal tube at normal temperature to obtain a finished product after smearing.
Example 1
The present example is a specific plastic powder, wherein the weight part of the functional powder is 80 parts, the weight part of the magnetic nanoparticle is 12 parts, the weight part of the nano silica particle is 10 parts, and the weight part of the adhesive is 7 parts.
Example 2
The present example is a specific another plastic powder, wherein the weight part of the functional powder is 100 parts, the weight part of the magnetic nanoparticle is 8 parts, the weight part of the nano silica particle is 14 parts, and the weight part of the adhesive is 4 parts.
Example 3
The present example is a specific further plastic powder, wherein the weight part of the functional powder is 90 parts, the weight part of the magnetic nanoparticles is 10 parts, the weight part of the nanosilica particles is 12 parts, and the weight part of the binder is 5.5 parts.
Example 4
The embodiment is based on the preparation method of plastic powder, except that step S2 may be replaced by burning the functional powder to make it in a gaseous state, conveying the gaseous functional powder into a mixer to mix with the mixture prepared in step S1, conveying the gasified functional powder into the mixer, contacting the functional powder with the mixture prepared in step S1 under stirring, and pre-cooling and solidifying to realize filling of the functional powder in the pore diameter of the nano silica particles and adhesion of the functional powder on the outer surface of the nano silica particles.
Example 5
Referring to fig. 4, the embodiment is based on the method of smearing plastic powder on the inner wall of a tubular metal, except that step S3 may be replaced by keeping the position of the spray gun fixed, and after the spray gun begins spraying, moving the metal tube at a uniform speed along the axial direction of the metal tube while rotating the magnetic field at a uniform speed with the axial direction of the metal tube as the axis, so as to smear the inner wall of the metal tube.
Example 6
Referring to fig. 5, the embodiment is based on the method of smearing plastic powder on the inner wall of a tubular metal, except that step S3 may be replaced by maintaining the position of the metal tube to rotate, and moving the spray gun and the magnetic field at a constant speed along the axis direction of the metal tube after the spray gun begins to spray, so as to smear the inner wall of the metal tube.
In addition, the components not described in detail herein are prior art.
It is important to note that the construction and arrangement of the present application as shown in a variety of different exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. A plastic powder characterized by: the magnetic nano-particle adhesive comprises 80-100 parts by weight of functional powder, 8-12 parts by weight of magnetic nano-particles, 10-14 parts by weight of nano-silica particles and 4-7 parts by weight of adhesive.
2. A plastic powder as claimed in claim 1, characterized in that: the functional powder comprises 80 parts by weight, 12 parts by weight of the magnetic nano particles, 10 parts by weight of the nano silicon dioxide particles and 7 parts by weight of the adhesive.
3. A plastic powder as claimed in claim 1, characterized in that: the functional powder comprises 100 parts by weight of magnetic nanoparticles, 8 parts by weight of nano silicon dioxide particles, 14 parts by weight of nano silicon dioxide particles and 4 parts by weight of adhesive.
4. A plastic powder as claimed in claim 1, 2 or 3, characterized in that: the preparation method comprises the following steps of;
s1: placing the magnetic nano particles, the nano silicon dioxide particles and the adhesive in a centrifugal stirrer to stir for 0.5-1 h;
s2: heating the functional powder to enable the functional powder to be melted into a liquid state, and adding the mixture prepared in the step S1 into the liquid functional powder to stir for 20-40 min;
s3: after the mixture is cooled and solidified, placing the solidified mixture into a superfine pulverizer to pulverize;
s4: sieving the crushed material with a 100-200 mesh sieve to obtain target powder.
5. A plastic powder as claimed in claim 4, wherein: step S2 may be replaced by burning the functional powder to make it gaseous, and conveying the gaseous functional powder into a mixer to mix with the mixture prepared in step S1.
6. A plastic powder according to claim 1, 2, 3 or 5, characterized in that: the average pore diameter of the nano silicon dioxide particles is 15-20 nm, and the average diameter of the magnetic nano particles is 12-18 nm.
7. A plastic powder as claimed in claim 6, wherein: the magnetic nano particles are made of at least one of iron, cobalt and nickel.
8. A method for coating plastic powder on the inner wall of tubular metal, which is characterized in that: a method of applying a plastic powder according to any one of claims 1 to 7 comprising the steps of;
s1: adding the prepared plastic powder through a feed inlet of a high-pressure spray gun;
s2: the metal pipe to be treated is arranged on one side of the electromagnetic plate in a limiting mode, and a gun rod of the spray gun extends into the metal pipe;
s3: the magnetic field is kept fixed, the position of the spray gun is kept fixed, and after the spray gun begins to spray, the metal tube is uniformly rotated and simultaneously uniformly moved along the axial direction of the metal tube, so that the inner wall of the metal tube is smeared;
s4: after the coating is finished, the metal tube is baked and cured at the temperature of 180-190 ℃;
s5: and (3) after baking, cooling the metal tube at normal temperature to obtain a finished product after smearing.
9. A method of applying a plastic powder to an inner wall of a tubular metal as defined in claim 8, wherein: step S3 can be replaced by keeping the position of the spray gun fixed, and after the spray gun begins to spray, uniformly rotating the magnetic field by taking the axis of the metal tube as the axis and simultaneously uniformly moving the metal tube along the axis direction of the metal tube so as to smear the inner wall of the metal tube.
10. A method of applying a plastic powder to an inner wall of a tubular metal as defined in claim 8, wherein: step S3 can be replaced by keeping the position of the metal tube to rotate, and after the spray gun begins to spray, uniformly moving the spray gun and the magnetic field along the axial direction of the metal tube to smear the inner wall of the metal tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311774220.5A CN117757295A (en) | 2023-12-22 | 2023-12-22 | A kind of plastic powder and a method for applying the plastic powder to the inner wall of tubular metal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311774220.5A CN117757295A (en) | 2023-12-22 | 2023-12-22 | A kind of plastic powder and a method for applying the plastic powder to the inner wall of tubular metal |
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| CN117757295A true CN117757295A (en) | 2024-03-26 |
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Citations (7)
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| CN1085134A (en) * | 1992-10-14 | 1994-04-13 | 夏志良 | Technique for coating inside wall of metal pipe with plastic powder |
| CN201361597Y (en) * | 2009-03-06 | 2009-12-16 | 李婉婷 | Integrated heating, powder-spraying and film-forming device for internal wall of steel tube |
| CN108219243A (en) * | 2017-12-22 | 2018-06-29 | 合肥善腾塑料科技有限公司 | A kind of magnetic plastics master batch and preparation method thereof |
| CN110818247A (en) * | 2019-10-30 | 2020-02-21 | 徐州诺克非医药科技有限公司 | Double-layer multi-surface light absorption material for chemical reagent storage |
| CN112760012A (en) * | 2021-01-14 | 2021-05-07 | 中国石油大学(北京) | Metal surface coating composition, preparation method, spraying method and application thereof |
| DE102021100518A1 (en) * | 2021-01-13 | 2022-07-14 | Cure 44 GmbH | Process and device for applying a coating of a plastic material to a support surface |
| CN115814770A (en) * | 2022-12-12 | 2023-03-21 | 南通大学 | Preparation method and application of magnetic porous nano silicon dioxide fluid |
-
2023
- 2023-12-22 CN CN202311774220.5A patent/CN117757295A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085134A (en) * | 1992-10-14 | 1994-04-13 | 夏志良 | Technique for coating inside wall of metal pipe with plastic powder |
| CN201361597Y (en) * | 2009-03-06 | 2009-12-16 | 李婉婷 | Integrated heating, powder-spraying and film-forming device for internal wall of steel tube |
| CN108219243A (en) * | 2017-12-22 | 2018-06-29 | 合肥善腾塑料科技有限公司 | A kind of magnetic plastics master batch and preparation method thereof |
| CN110818247A (en) * | 2019-10-30 | 2020-02-21 | 徐州诺克非医药科技有限公司 | Double-layer multi-surface light absorption material for chemical reagent storage |
| DE102021100518A1 (en) * | 2021-01-13 | 2022-07-14 | Cure 44 GmbH | Process and device for applying a coating of a plastic material to a support surface |
| CN112760012A (en) * | 2021-01-14 | 2021-05-07 | 中国石油大学(北京) | Metal surface coating composition, preparation method, spraying method and application thereof |
| CN115814770A (en) * | 2022-12-12 | 2023-03-21 | 南通大学 | Preparation method and application of magnetic porous nano silicon dioxide fluid |
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