CN211289047U - Steel-lined plastic-wear-resistant composite pipeline lined with polyolefin wear-resistant layer - Google Patents
Steel-lined plastic-wear-resistant composite pipeline lined with polyolefin wear-resistant layer Download PDFInfo
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- CN211289047U CN211289047U CN201921962790.6U CN201921962790U CN211289047U CN 211289047 U CN211289047 U CN 211289047U CN 201921962790 U CN201921962790 U CN 201921962790U CN 211289047 U CN211289047 U CN 211289047U
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Abstract
The utility model discloses a wear-resisting composite pipe is moulded to steel lining of inside lining polyolefin wearing layer, including the metal pipe body, the metal pipe body inner wall is inwards equipped with tie coat, polyolefin layer and polyolefin wearing layer in proper order by the inner wall, the tie coat is the tubular structure of settlement thickness that has that bonding resin formed, the tubular structure of settlement thickness has for polyolefin material formation on polyolefin layer, the rigidity tubular structure of settlement thickness has for polyolefin wearing layer formation. The composite pipeline wear-resistant layer and the metal pipe are combined into a whole, so that the wear resistance is excellent, and the service life is longer.
Description
Technical Field
The utility model belongs to the composite pipe field relates to a wear-resisting composite pipe is moulded to steel lining of inside lining polyolefin wearing layer.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The rapid wear of pipes is a common problem for the transport of solid particle-containing slurries. Slurry transport often utilizes the compounding of pipes to improve the wear resistance of the pipes. The method is three common composite modes in metal layers of metal pipe lining wear-resistant rubber such as polyurethane rubber, sintered wear-resistant enamel or ceramic, surfacing high-chromium cast iron and the like. After the metal pipe lining rubber material is used for a certain time, the rubber is easy to separate from the inner wall of the metal, mainly because the rubber is only lined on the inner wall of the metal pipe and is not compounded with the metal into a whole; the problems of brittle and fragile ceramic and local falling failure are easily caused by sintering the ceramic inorganic wear-resistant layer on the metal tube; the surfacing wear-resistant metal has high cost and poor electrochemical corrosion resistance.
Lining plastic composite is a common composite process for improving the corrosion resistance of a metal pipe by lining a plastic pipe to the inner wall of the metal pipe by using hot melt adhesive. However, common plastic pipe materials are not wear-resistant, and the wear resistance of the metal pipeline cannot be effectively improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model aims at providing a wear-resisting compound pipeline is moulded to steel lining of inside lining polyolefin wearing layer, wearing layer and tubular metal resonator are compound as an organic whole, and the wearability is excellent, and life is longer.
In order to realize the purpose, the technical scheme of the utility model is that:
the utility model provides a wear-resisting compound pipe is moulded to steel lining of inside lining polyolefin wearing layer, includes the metal pipe body, and the metal pipe body inner wall is inwards equipped with tie coat, polyolefin layer and polyolefin wearing layer in proper order by the inner wall, the tie coat has the tubular structure of setting for thickness for the bonding resin forms, the polyolefin layer has the tubular structure of setting for thickness for the polyolefin material forms, the polyolefin wearing layer has the rigid tubular structure of setting for thickness for the polyolefin wearing material forms.
The material of the metal pipe lining wear layer is generally a polymer elastomer material, such as rubber, and the like, and particularly the utility model discloses a high wear-resistant polyolefin pipeline special material is disclosed in the previous research (chinese patent CN201811593863.9), the inner wall of the metal pipe is generally directly lined with the existing metal pipe lining wear layer, and the wear layer is not compounded into a whole by the metal pipe, so that the wear layer is easily separated from the inner wall of the metal pipe, thereby reducing the service life of the pipeline. Therefore, the utility model discloses in later stage's research, adopt bonding resin to bond wearing layer at the tubular metal resonator inner wall, the purpose is with wearing layer and tubular metal resonator complex integrative, however, found in this research, lined the wearing layer at the inner wall of tubular metal resonator, prepared wearing layer earlier, then lined the wearing layer and moulded at the tubular metal resonator inner wall. The utility model discloses a make the adhesive resin compound wearing layer and tubular metal resonator, mould the wearing layer surface coating one deck adhesive resin before the lining, it moulds to line again, however the discovery of coating adhesive resin, the material of wearing layer is softer, after its surface coating adhesive resin, not only make the viscosity increase between wearing layer and the tubular metal resonator, it is difficult to line the tubular metal resonator inner wall to lead to the wearing layer, and because the wearing layer matter is soft, make the adhesive resin between wearing layer and the tubular metal resonator distribute inhomogeneously, lead to producing the gap between partial wearing layer and the tubular metal resonator, thereby can't make wearing layer and tubular metal resonator compound, can make the wearing layer produce deformation even, increase the wearing and tearing resistance and influence the transport of pipeline to the slurry simultaneously.
Therefore, the utility model discloses at the first compound one deck polyolefin layer in wearing layer surface, the polyolefin layer has certain rigidity, can play the supporting role for the wearing layer, then at polyolefin layer surface coating one deck adhesive resin to the polyolefin layer is as supporting, thereby solves the difficult problem that is difficult to lining to the steel pipe inner wall that the deformation that the wearing layer matter soft produced brought. And simultaneously, the utility model discloses a because the material of material is close between polyolefin layer and the polyolefin wearing layer, can make polyolefin layer and polyolefin wearing layer compound more inseparabler to guarantee that metal pipe body, polyolefin layer and polyolefin wearing layer are compound as an organic whole. Third, the utility model discloses a set up tie coat, polyolefin layer, can be better with polyolefin wearing layer and metal pipe body complex as an organic whole to make pipeline wearability excellent, long service life.
Further, the adhesive layer is a tubular structure with a set thickness formed by maleic anhydride grafting modified adhesive resin.
Further, when the polyolefin layer is a polyethylene layer, the tie layer is a tubular structure having a set thickness formed of a maleic anhydride graft-modified polyethylene tie resin.
Further, when the polyolefin layer is a polypropylene layer, the tie layer is a tubular structure having a set thickness formed of a maleic anhydride graft-modified polypropylene tie resin.
Further, the thickness of the metal pipe body is 2 mm-100 mm.
Further, the thickness of the bonding layer is 0.1 mm-2.0 mm.
Further, the thickness of the polyolefin layer is 0.5mm to 10 mm.
Further, the thickness of the polyolefin wear-resistant layer is 0.5 mm-10 mm.
Furthermore, the ratio of the thickness of the bonding layer to the thickness of the polyolefin wear-resistant layer is 1:5: 5-1: 100: 100. The pipeline has more excellent wear resistance and longer service life.
The utility model has the advantages that:
(1) the utility model provides a wear-resisting material and polyolefin alkene can form the integrative structure of polyolefin layer and polyolefin wearing layer through the coextrusion, solved the soft difficult problem that is difficult for lining to the steel pipe inner wall of wear-resisting material, rethread maleic anhydride grafting modified bonding resin bonds the inside of tubular metal resonator, wearing layer and metal body form a whole, the wearing layer separation problem that the rubber liner layer appears can not take place, the four-layer becomes the whole that combines organically, wear-resisting composite metal pipeline's life is longer.
(2) The utility model discloses a wearing layer adopts flexible fluorine, the wear-resisting polyolefin thermoplastic elastomer of silicon modification, can form the elastomer network through dynamic cross-linking and absorb the impact energy that receives and improve the wearability of material, reduces the coefficient of friction of material itself through fluorine, the silicon of low surface energy on the grafting simultaneously.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic view of a radial cross-section structure of a wear-resistant pipe according to an embodiment of the present invention;
the composite pipe comprises a metal pipe body 1, a bonding layer 2, a polyethylene layer (or a polypropylene layer) 3, and a polyolefin wear-resistant layer 4.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In order to solve the technical problem that the wearing layer and the metal pipe are difficult to compound as an organic whole, the utility model provides a wear-resisting compound pipeline is moulded to steel lining of inside lining polyolefin wearing layer.
The utility model discloses a typical embodiment provides a wear-resisting composite pipe is moulded to steel lining of inside lining polyolefin wearing layer, including the metal pipe body, the metal pipe body inner wall is inwards equipped with tie coat, polyolefin layer and polyolefin wearing layer in proper order by the inner wall, the tie coat is the tubular structure who sets for thickness for having of bonding resin formation, the polyolefin layer is the tubular structure who sets for thickness that has of polyolefin material formation, the polyolefin wearing layer is the rigid tubular structure who sets for thickness that has of polyolefin wearing material formation.
The utility model discloses at the first compound one deck polyolefin layer in wearing layer surface, the polyolefin layer has certain rigidity, can play the supporting role for the wearing layer, then at polyolefin layer surface coating one deck adhesive resin to the polyolefin layer is as supporting, thereby solves the difficult problem that is difficult to line the steel pipe inner wall that deformation that the soft production of wearing layer matter brought. And simultaneously, the utility model discloses a because the material of material is close between polyolefin layer and the polyolefin wearing layer, can make polyolefin layer and polyolefin wearing layer compound more inseparabler to guarantee that metal pipe body, polyolefin layer and polyolefin wearing layer are compound as an organic whole. Third, the utility model discloses a set up tie coat, polyolefin layer, can be better with polyolefin wearing layer and metal pipe body complex as an organic whole to make pipeline wearability excellent, long service life.
In order to increase the wear resistance of the inner wall of the pipeline and reduce the friction coefficient of the inner wall of the pipeline, in one or more embodiments of the embodiment, the material adopted by the polyolefin wear-resistant layer is a special material disclosed in chinese patent CN201811593863.9 for high wear-resistant polyolefin pipelines. The special material for the high-wear-resistance polyolefin pipeline is a flexible fluorine and silicon modified wear-resistance polyolefin thermoplastic elastomer, can form an elastomer network through dynamic crosslinking to absorb the impact energy so as to improve the wear resistance of the material, and simultaneously reduces the friction coefficient of the material by grafting low-surface-energy fluorine and silicon.
In one or more embodiments of this embodiment, the tie layer is a tubular structure of maleic anhydride graft modified tie resin having a set thickness.
In this series of examples, when the polyolefin layer is a polyethylene layer, the tie layer is a tubular structure of a maleic anhydride graft-modified polyethylene tie resin having a set thickness. When polyethylene is used as the polyolefin layer material, the maleic anhydride graft modified polyethylene adhesive resin is used, so that the polyolefin layer can be better compounded on the inner wall of the metal pipe.
In this series of examples, when the polyolefin layer is a polypropylene layer, the tie layer is a tubular structure of a maleic anhydride graft-modified polypropylene tie resin having a set thickness. When polypropylene is used as the polyolefin layer material, the maleic anhydride graft modified polypropylene bonding resin is adopted, so that the polyolefin layer can be better compounded on the inner wall of the metal pipe.
In one or more embodiments of this embodiment, the metal tube body has a thickness of 2mm to 100 mm.
In one or more embodiments of this embodiment, the bonding layer has a thickness of 0.1mm to 1.0 mm.
In one or more embodiments of this embodiment, the polyolefin layer has a thickness of 0.5mm to 10 mm.
In one or more embodiments of this embodiment, the polyolefin abrasion-resistant layer has a thickness of 0.5mm to 10 mm.
In one or more embodiments of the present disclosure, a ratio of a thickness of the adhesive layer, a thickness of the polyolefin layer, and a thickness of the polyolefin wear layer is 1:5:5 to 1:100: 100. The pipeline has more excellent wear resistance and longer service life.
The utility model provides a wear-resisting composite pipe is moulded to steel lining of inside lining polyolefin wearing layer can be used for the ore pulp to carry, the mortar is carried, the coal slurry is carried, the mud is carried, the tailing fills the field.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1
The preparation method of the lining plastic wear-resistant composite pipe lined with the polyolefin wear-resistant layer comprises the following steps:
s1, co-extruding a polyolefin wear-resistant material (EN910, Shandong Macro pipe industry Co., Ltd.) and a polyethylene pipe special material (PN049, middle sand petrochemical) into a composite core pipe with an inner layer of a polyolefin wear-resistant layer and an outer layer of a polyethylene layer at the temperature of 170-215 ℃ by using 2 co-extrusion extruders with co-extrusion functions.
S2, coating maleic anhydride graft modified polyethylene bonding resin (EN360H, Shandong Macro pipe industry Co., Ltd.) on the outer layer of the composite core pipe at 180-250 ℃ by a glue coating extruder.
S3, inserting the glued composite core pipe into the steel pipe, heating the steel pipe by using intermediate frequency (dn50mm, length 6m), combining the pressurization effect of blowing up the core pipe by using pressure gas, adhering the adhesive resin to the inner wall of the steel pipe by using the heat of the steel pipe, and forming an organic whole by four layers to obtain the steel-lined plastic wear-resistant composite pipeline.
The obtained steel-lined plastic wear-resistant composite pipeline structure is shown in figure 1 and sequentially comprises a metal pipe body 1 (with the thickness of 4mm), a bonding layer 2 (with the thickness of 0.1mm), a polyethylene layer 3 (with the thickness of 1mm) and a polyolefin wear-resistant layer 4 (with the thickness of 2mm) from outside to inside.
Example 2
The preparation method of the lining plastic wear-resistant composite pipe lined with the polyolefin wear-resistant layer comprises the following steps:
s1, co-extruding a polyolefin wear-resistant material (EN920, Shandong Macro pipe industry Co., Ltd.) and a polypropylene pipeline special material (4220, Yanshan petrochemical) into a composite core pipe with an inner layer of a polyolefin wear-resistant layer and an outer layer of a polyethylene layer at the temperature of 170-215 ℃ by 2 co-extrusion extruders with co-extrusion functions.
S2, coating the outer layer of the composite core pipe with maleic anhydride grafted modified polypropylene bonding resin (EN680, Shandong Macro pipe industry Co., Ltd.) at 180-250 ℃ by a glue coating extruder.
S3, inserting the glued composite core pipe into the steel pipe, heating the steel pipe by high frequency (dn500mm, length 6m), combining the pressurization effect of blowing the core pipe by pressure gas, adhering the adhesive resin to the inner wall of the steel pipe by the heat of the steel pipe, and forming an organic whole by four layers to obtain the steel lining plastic wear-resistant composite pipeline.
The obtained steel-lined plastic wear-resistant composite pipeline structure is shown in figure 1 and sequentially comprises a metal pipe body 1 (with the thickness of 10mm), a bonding layer 2 (with the thickness of 0.3mm), a polypropylene layer 3 (with the thickness of 3mm) and a polyolefin wear-resistant layer 4 (with the thickness of 6mm) from outside to inside.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a wear-resisting compound pipeline is moulded to steel lining of inside lining polyolefin wearing layer, characterized by, includes the metal pipe body, and the metal pipe body inner wall inwards is equipped with tie coat, polyolefin layer and polyolefin wearing layer in proper order by the inner wall, the tie coat is the tubular structure that bonding resin formed, the polyolefin layer is the tubular structure that polyolefin material formed, the polyolefin wearing layer is the rigid tubular structure that polyolefin wearing material formed.
2. The steel-lined plastic wear-resistant composite pipe lined with a polyolefin wear-resistant layer as recited in claim 1, wherein the bonding layer is a tubular structure formed by maleic anhydride graft modified bonding resin.
3. The steel-lined plastic-lined abrasion-resistant composite pipe lined with a polyolefin abrasion-resistant layer as claimed in claim 2, wherein when the polyolefin layer is a polyethylene layer, the bonding layer is a tubular structure formed of a maleic anhydride graft-modified polyethylene bonding resin.
4. The steel-lined plastic-lined abrasion-resistant composite pipe lined with a polyolefin abrasion-resistant layer as claimed in claim 1, wherein when the polyolefin layer is a polypropylene layer, the bonding layer is a tubular structure formed of a maleic anhydride graft-modified polypropylene bonding resin.
5. The steel-lined plastic wear-resistant composite pipe lined with the polyolefin wear-resistant layer as claimed in claim 1, wherein the thickness of the metal pipe body is 2mm to 100 mm.
6. The steel-lined plastic wear-resistant composite pipe lined with the polyolefin wear-resistant layer as claimed in claim 1, wherein the thickness of the bonding layer is 0.1 mm-1.0 mm.
7. The steel-lined plastic wear-resistant composite pipe lined with a polyolefin wear-resistant layer as claimed in claim 1, wherein the polyolefin layer has a thickness of 0.5mm to 10 mm.
8. The steel-lined plastic wear-resistant composite pipe lined with the polyolefin wear-resistant layer as claimed in claim 1, wherein the polyolefin wear-resistant layer has a thickness of 0.5mm to 10 mm.
9. The steel-lined plastic wear-resistant composite pipeline lined with the polyolefin wear-resistant layer as claimed in claim 1, wherein the ratio of the thickness of the bonding layer to the thickness of the polyolefin wear-resistant layer is 1:5:5 to 1:100: 100.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921962790.6U CN211289047U (en) | 2019-11-13 | 2019-11-13 | Steel-lined plastic-wear-resistant composite pipeline lined with polyolefin wear-resistant layer |
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| CN201921962790.6U CN211289047U (en) | 2019-11-13 | 2019-11-13 | Steel-lined plastic-wear-resistant composite pipeline lined with polyolefin wear-resistant layer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096973A (en) * | 2020-09-16 | 2020-12-18 | 山东东宏管业股份有限公司 | Steel wire mesh framework reinforced polypropylene composite pipe and preparation method and application thereof |
| CN114670377A (en) * | 2022-04-09 | 2022-06-28 | 河北圣耐普特矿山设备有限公司 | Rubber casting pipeline vulcanization process |
| CN114877168A (en) * | 2022-05-13 | 2022-08-09 | 临海伟星新型建材有限公司 | Rib-type coupled wear-resistant composite lining repairing pipe and lining repairing method |
-
2019
- 2019-11-13 CN CN201921962790.6U patent/CN211289047U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096973A (en) * | 2020-09-16 | 2020-12-18 | 山东东宏管业股份有限公司 | Steel wire mesh framework reinforced polypropylene composite pipe and preparation method and application thereof |
| CN114670377A (en) * | 2022-04-09 | 2022-06-28 | 河北圣耐普特矿山设备有限公司 | Rubber casting pipeline vulcanization process |
| CN114877168A (en) * | 2022-05-13 | 2022-08-09 | 临海伟星新型建材有限公司 | Rib-type coupled wear-resistant composite lining repairing pipe and lining repairing method |
| CN114877168B (en) * | 2022-05-13 | 2023-08-08 | 临海伟星新型建材有限公司 | Rib-type coupled wear-resistant composite lining repairing pipe and lining repairing method |
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