CN108104733B - Carbon fiber composite sucker rod with autonomous repair function - Google Patents
Carbon fiber composite sucker rod with autonomous repair function Download PDFInfo
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- CN108104733B CN108104733B CN201810102726.4A CN201810102726A CN108104733B CN 108104733 B CN108104733 B CN 108104733B CN 201810102726 A CN201810102726 A CN 201810102726A CN 108104733 B CN108104733 B CN 108104733B
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 103
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 103
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000002131 composite material Substances 0.000 title claims abstract description 65
- 230000008439 repair process Effects 0.000 title claims description 11
- 239000010410 layer Substances 0.000 claims abstract description 67
- 239000000835 fiber Substances 0.000 claims abstract description 57
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 54
- 229920005989 resin Polymers 0.000 claims abstract description 53
- 239000011347 resin Substances 0.000 claims abstract description 53
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 52
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 52
- 239000012943 hotmelt Substances 0.000 claims abstract description 46
- 239000011159 matrix material Substances 0.000 claims abstract description 42
- 239000012792 core layer Substances 0.000 claims abstract description 41
- 238000009954 braiding Methods 0.000 claims abstract description 31
- 230000007547 defect Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000005260 corrosion Methods 0.000 claims abstract description 26
- 230000007797 corrosion Effects 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000009941 weaving Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims description 13
- 229920000647 polyepoxide Polymers 0.000 claims description 13
- -1 polyethylene Polymers 0.000 claims description 9
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 7
- 229920001568 phenolic resin Polymers 0.000 claims description 7
- 239000005007 epoxy-phenolic resin Substances 0.000 claims description 6
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 3
- 229920001643 poly(ether ketone) Polymers 0.000 claims description 3
- 229920002312 polyamide-imide Polymers 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 6
- 238000009940 knitting Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000013007 heat curing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a carbon fiber composite sucker rod with an autonomous repairing function, and belongs to the technical field of oil extraction in an oil field. The sucker rod sequentially comprises a carbon fiber unidirectional composite material core layer, a thermoplastic fiber hot melt weaving layer and a chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer from inside to outside, wherein: the carbon fiber unidirectional composite material core layer adopts a round bar structure and is formed by a continuous unidirectional carbon fiber filament reinforced thermosetting resin matrix; the thermoplastic fiber hot-melt braiding layer is positioned on the surface of the carbon fiber unidirectional composite material core layer and is prepared by braiding thermoplastic organic fiber filaments; the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer is formed by mixing chopped carbon fibers with specific length into a thermosetting resin matrix, and performing injection coating on the surface of a thermoplastic fiber hot melt weaving layer to finally perform thermosetting. The invention can solve the problem that the carbon fiber composite material continuous sucker rod in the existing oil extraction equipment has micro defects in the service process.
Description
Technical Field
The invention relates to the technical field of oil extraction in an oil field, in particular to a carbon fiber composite material sucker rod with an autonomous repairing function.
Background
With the development of the oil exploitation industry and the continuous improvement of oil exploitation scale, effective utilization of complex oil wells and secondary development of larger-depth oil wells become important work, and the current oil well type for domestic oil exploitation also has a complex trend, so that the traditional steel sucker rod is gradually replaced by the sucker rod made of composite materials.
The composite material belongs to multiphase solid materials, the sucker rod adopted at home at present is mainly a glass fiber reinforced resin matrix composite sucker rod and a carbon fiber composite sucker rod, the two sucker rods are light in weight and excellent in comprehensive mechanical property, but due to the increasing complexity of underground environment, the friction and abrasion problem on composite materials is more and more serious, especially under the condition that a thickened oil well and underground geological environment are complex, cracks and defects on the surface of a rod body are more and more frequent along with the reciprocating motion of the sucker rod, and the larger cracks inevitably lead to the defect expansion of the composite material, so that the normal use of the rod body is influenced, and the rod body is seriously broken.
Disclosure of Invention
The invention provides a carbon fiber composite sucker rod with an autonomous repairing function, which can solve the problem that micro defects appear in the service process of a carbon fiber composite continuous sucker rod in the existing oil extraction equipment.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a carbon fiber composite material sucker rod with independently restore function, includes carbon fiber unidirectional composite material sandwich layer, thermoplastic fiber hot melt weaving layer and short carbon fiber reinforcing thermosetting resin corrosion-resistant rigid layer from interior to exterior in proper order, wherein:
the carbon fiber unidirectional composite material core layer adopts a round bar structure and is formed by a continuous unidirectional carbon fiber filament reinforced thermosetting resin matrix;
the thermoplastic fiber hot-melt braiding layer is positioned on the surface of the carbon fiber unidirectional composite material core layer and is prepared by braiding thermoplastic organic fiber filaments;
the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer is formed by mixing chopped carbon fibers with specific length into a thermosetting resin matrix, and performing injection coating on the surface of the thermoplastic fiber hot melt weaving layer to finally perform thermosetting.
Further, the carbon fiber unidirectional composite core layer adopts a unidirectional arrangement structure of high-strength carbon fibers to impregnate a thermosetting resin matrix, the high-strength carbon fibers adopt one of T300, T700, T800 and T1000, and the thermosetting resin matrix adopts one of epoxy resin, phenolic resin and unsaturated polyester resin.
Further, the content of the thermosetting resin matrix of the carbon fiber unidirectional composite core layer is controlled within the range of 30% -60%, and the diameter of the carbon fiber unidirectional composite core layer is controlled within the range of 3-5 mm.
Further, the thermoplastic fiber hot-melt braiding layer is prepared by adopting a two-dimensional fiber braiding method, the fiber adopts thermoplastic low-temperature hot-melt fiber filaments, the thermoplastic low-temperature hot-melt fiber filaments are one of polyurethane, polyethylene, polypropylene, polyether ketone, polyether ether ketone, polyphenylene sulfide, polyamide and polyimide filaments, and the fiber is braided by adopting one braiding method of plain weave, twill weave and satin weave.
Further, the thickness of the thermoplastic fiber hot-melt braiding layer is controlled to be between 0.6 and 1 mm.
Further, the chopped carbon fiber of the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer adopts one of high-strength T300, T700, T800 and T1000, and the thermosetting resin matrix adopts one of epoxy resin, phenolic resin and unsaturated polyester resin.
Further, the chopped length of the chopped carbon fibers of the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer is controlled within a range of 2-10 mm.
Further, when microcracks are generated on the carbon fiber unidirectional composite material core layer or the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer of the sucker rod in the service process, the defect problem part of the whole sucker rod continuous rod body is heated, and the fiber fabric of the thermoplastic fiber hot melt weaving layer has low-temperature hot melt characteristics and high fluidity, so that microcrack defects in the service process can be effectively filled, a composite structure of a thermoplastic matrix toughened thermosetting resin matrix is formed, the defects are effectively repaired, and the normal working service life of the rod body is prolonged.
The invention has the following beneficial effects:
the carbon fiber composite sucker rod with the self-repairing function is applied to oil extraction equipment in petroleum industry, has the self-repairing and self-healing functions of microcracks, and comprises the following components: when the pumping rod generates microcracks in the core layer or the surface rigid layer in the service process, the whole pumping rod can be subjected to heat treatment, and the fiber fabric woven by the middle thermoplastic fiber has low-temperature hot melting characteristic and high fluidity, so that microcrack defects in the service process are effectively filled, the surface rigid layer and the inner core rod layer are toughened, and the whole service life is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional structure of a carbon fiber composite sucker rod with autonomous repair function according to the present invention, wherein: a carbon fiber unidirectional composite core layer 1, a thermoplastic fiber hot melt weaving layer 2 and a chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer 3.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The invention provides a carbon fiber composite sucker rod with an autonomous repair function, which sequentially comprises a carbon fiber unidirectional composite core layer 1, a thermoplastic fiber hot melt braiding layer 2 and a chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer 3 from inside to outside as shown in figure 1, wherein:
the carbon fiber unidirectional composite material core layer 1 adopts a round bar structure and is formed by a continuous unidirectional carbon fiber filament reinforced thermosetting resin matrix;
the middle thermoplastic fiber hot melt braiding layer 2 is positioned on the surface of the carbon fiber unidirectional composite material core layer 1 and is prepared by braiding thermoplastic organic fiber filaments;
the outer chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer 3 is formed by mixing chopped carbon fibers with specific length into a thermosetting resin matrix, and performing injection coating on the surface of the middle thermoplastic fiber hot melt weaving layer 2 to finally perform thermosetting.
The carbon fiber composite sucker rod with the self-repairing function is applied to oil extraction equipment in petroleum industry, has the self-repairing and self-healing functions of microcracks, and comprises the following components: when the pumping rod generates microcracks in the core layer or the surface rigid layer in the service process, the whole pumping rod can be subjected to heat treatment, and the fiber fabric woven by the middle thermoplastic fiber has low-temperature hot melting characteristic and high fluidity, so that microcrack defects in the service process are effectively filled, the surface rigid layer and the inner core rod layer are toughened, and the whole service life is prolonged.
Preferably, the carbon fiber unidirectional composite material core layer adopts a unidirectional arrangement structure of high-strength carbon fibers to impregnate a thermosetting resin matrix, the high-strength carbon fibers can be any one of T300, T700, T800 and T1000, and the thermosetting resin matrix adopts any one of epoxy resin, phenolic resin and unsaturated polyester resin.
Further, the content of the thermosetting resin matrix of the carbon fiber unidirectional composite core layer is controlled within the range of 30% -60%, and the diameter of the carbon fiber unidirectional composite core layer can be flexibly adjusted according to the use requirement, and specifically, can be controlled within the range of 3-5 mm.
As an improvement of the invention, the thermoplastic fiber hot-melt braiding layer is prepared by adopting a braiding method of two-dimensional fibers, the fibers adopt thermoplastic low-temperature hot-melt fiber filaments, and the thermoplastic low-temperature hot-melt fiber filaments can be any one of polyurethane, polyethylene, polypropylene, polyether ketone, polyether ether ketone, polyphenylene sulfide, polyamide and polyimide filaments and can be braided by adopting any one braiding method of plain weave, twill weave and satin weave.
Preferably, the thickness of the thermoplastic fiber hot melt braiding layer can be flexibly adjusted according to the use requirement, and particularly, can be controlled between 0.6 and 1 mm.
Further, the chopped carbon fiber of the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer can be any one of high-strength T300, T700, T800 and T1000, the thermosetting resin matrix can be any one of epoxy resin, phenolic resin and unsaturated polyester resin, the chopped carbon fiber is mixed into the thermosetting resin matrix, the final mixing proportion can be flexibly adjusted according to the use requirement, the surface of the middle thermoplastic fiber hot-melt braiding layer is coated by injection and finally cured in a heat mode to prepare the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer, and the thickness of the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer can be flexibly adjusted according to the use requirement.
Preferably, the chopped length of the chopped carbon fibers of the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer may be controlled within a range of 2 to 10 mm.
When the carbon fiber unidirectional composite material core layer or the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer of the sucker rod generates microcracks in the service process, the defect problem part of the whole sucker rod continuous rod body is heated, and the fiber fabric of the thermoplastic fiber hot melt weaving layer has low-temperature hot melt characteristics and high fluidity, so that microcrack defects in the service process can be effectively filled, a composite structure of the thermoplastic matrix toughened thermosetting resin matrix is formed, the defects are effectively repaired, and the normal working service life of the rod body is prolonged.
The features and details of the present invention are further illustrated below in conjunction with specific examples, but the listed processes and data are not meant to limit the scope of the invention.
Example 1
A carbon fiber composite sucker rod with autonomous repair function comprising: the method comprises the steps of preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 5mm by adopting three parts of a T300 unidirectional high-strength carbon fiber impregnated epoxy resin, a middle thermoplastic fiber hot melt braiding layer and an outer chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer, preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 5mm by adopting a plain weave structure on the surface of the core layer rod, braiding a middle thermoplastic fiber hot melt braiding layer with the thickness of 0.6mm by adopting polyurethane filaments, mixing high-strength T300 carbon fibers with the chopped length of 10mm into the epoxy resin on the surface of the hot melt braiding layer to form a mixture, and preparing the surface corrosion-resistant rigid layer with the thickness of 1mm by adopting a mode of injection coating and final heat curing at 127 ℃;
if obvious interface cracks or matrix cracks of the core layer or the surface layer are generated in the service process, 170 ℃ heating treatment can be carried out on the defect problem part of the whole continuous rod body, the defect positions to be repaired are filled by utilizing hot melt flow of the middle thermoplastic fibers, a composite structure of the thermoplastic matrix toughened thermosetting resin matrix is formed, and the defects are effectively repaired.
Example 2
A carbon fiber composite sucker rod with autonomous repair function comprising: the method comprises the steps of preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 4mm by adopting three parts of a T700 unidirectional high-strength carbon fiber impregnated phenolic resin, controlling the resin matrix content to be 40%, preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 0.9mm by adopting a twill knitting structure on the surface of the core layer rod, knitting an intermediate thermoplastic fiber hot-melt knitting layer with the thickness of 0.9mm by adopting polyethylene filaments, mixing high-strength T300 carbon fibers with the short-cut length of 7mm into epoxy resin on the surface of the hot-melt knitting layer to form a mixture, and then preparing a surface corrosion-resistant rigid layer with the thickness of 2mm by adopting a mode of injection coating and final heat curing at 130 ℃;
if obvious interface cracks or matrix cracks of the core layer or the surface layer are generated in the service process, 150 ℃ heating treatment can be carried out on the defect problem part of the whole continuous rod body, the defect positions to be repaired are filled by utilizing hot melt flow of the middle thermoplastic fibers, a composite structure of the thermoplastic matrix toughened thermosetting resin matrix is formed, and the defects are effectively repaired.
Example 3
A carbon fiber composite sucker rod with autonomous repair function comprising: the method comprises the steps of preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 4mm by adopting T800 unidirectional high-strength carbon fiber impregnated epoxy resin, controlling the resin matrix content to 40%, preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 4mm, adopting a satin knitting structure on the surface of the core layer rod, adopting polypropylene filaments to knit an intermediate thermoplastic fiber hot-melt knitting layer with the thickness of 1mm, adopting high-strength T1000 carbon fibers with the short cutting length of 9mm on the surface of the hot-melt knitting layer to be mixed with the epoxy resin to form a mixture, and then preparing the surface corrosion-resistant rigid layer with the thickness of 1mm by adopting a mode of injection coating and final heat curing at 120 ℃;
if obvious interface cracks or matrix cracks of the core layer or the surface layer are generated in the service process, the defect problem part of the whole continuous rod body can be subjected to 180 ℃ heating treatment, the defect position to be repaired is filled by utilizing the hot melt flow of the middle thermoplastic fiber, a composite structure of the thermoplastic matrix toughened thermosetting resin matrix is formed, and the defect is effectively repaired.
Example 4
A carbon fiber composite sucker rod with autonomous repair function comprising: the method comprises the steps of preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 3mm by adopting three parts of a T1000 unidirectional high-strength carbon fiber impregnated epoxy resin, a middle thermoplastic fiber hot melt braiding layer and an outer chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer, preparing an inner carbon fiber unidirectional composite material core layer rod with the diameter of 0.8mm by adopting a plain weave structure on the surface of the core layer rod, braiding a middle thermoplastic fiber hot melt braiding layer with the thickness of 0.8mm by adopting polyethylene filaments, mixing high-strength T800 carbon fibers with the chopped length of 9mm into the epoxy resin to form a mixture on the surface of the hot melt braiding layer, and then preparing a surface corrosion-resistant rigid layer with the thickness of 2.5mm by adopting a mode of injection coating and final heat curing at the temperature of 126 ℃;
if obvious interface cracks or matrix cracks of the core layer or the surface layer are generated in the service process, 155 ℃ heating treatment can be carried out on the defect problem part of the whole continuous rod body, the defect positions to be repaired are filled by utilizing the hot melt flow of the middle thermoplastic fiber, a composite structure of the thermoplastic matrix toughened thermosetting resin matrix is formed, and the defects are effectively repaired.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (3)
1. The utility model provides a carbon fiber composite material sucker rod with independently repair function, its characterized in that includes carbon fiber unidirectional composite material sandwich layer, thermoplastic fiber hot melt weaving layer and short carbon fiber reinforcing thermosetting resin corrosion-resistant rigid layer from inside to outside in proper order, wherein:
the carbon fiber unidirectional composite material core layer adopts a round bar structure and is formed by a continuous unidirectional carbon fiber filament reinforced thermosetting resin matrix;
the thermoplastic fiber hot-melt braiding layer is positioned on the surface of the carbon fiber unidirectional composite material core layer and is prepared by braiding thermoplastic organic fiber filaments; the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer is formed by mixing chopped carbon fibers with specific length into a thermosetting resin matrix, and performing injection coating on the surface of the thermoplastic fiber hot melt weaving layer to finally perform thermosetting; the thermoplastic fiber hot-melt braiding layer is prepared by adopting a braiding method of two-dimensional fibers, the fibers adopt thermoplastic low-temperature hot-melt fiber filaments, the thermoplastic low-temperature hot-melt fiber filaments are one of polyurethane, polyethylene, polypropylene, polyether ketone, polyether ether ketone, polyphenylene sulfide, polyamide and polyimide filaments, and braiding is carried out by adopting one braiding method of plain weave, twill weave and satin weave; the thickness of the thermoplastic fiber hot melt braiding layer is controlled to be between 0.6 and 1 mm; the content of the thermosetting resin matrix of the carbon fiber unidirectional composite material core layer is controlled within the range of 30% -60%, and the diameter of the carbon fiber unidirectional composite material core layer is controlled within the range of 3-5 mm; the chopped length of the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer is controlled within the range of 2-10 mm; when microcracks are generated on the carbon fiber unidirectional composite material core layer or the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer of the sucker rod in the service process, the defect problem part of the whole sucker rod continuous rod body is heated, and the fiber fabric of the thermoplastic fiber hot melt weaving layer has low-temperature hot melt characteristics and high fluidity, can effectively fill microcrack defects in the service process, forms a composite structure of a thermoplastic matrix toughened thermosetting resin matrix, effectively repairs the defects, and prolongs the normal working service life of the rod body.
2. The sucker rod of carbon fiber composite material with autonomous repairing function according to claim 1, wherein the carbon fiber unidirectional composite material core layer is a unidirectional arrangement structure of high-strength carbon fibers impregnated with a thermosetting resin matrix, the high-strength carbon fibers are one of T300, T700, T800 and T1000, and the thermosetting resin matrix is one of epoxy resin, phenolic resin and unsaturated polyester resin.
3. The carbon fiber composite sucker rod with the autonomous repair function according to claim 1, wherein the chopped carbon fiber of the chopped carbon fiber reinforced thermosetting resin corrosion-resistant rigid layer adopts one of high-strength T300, T700, T800 and T1000, and the thermosetting resin matrix adopts one of epoxy resin, phenolic resin and unsaturated polyester resin.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108756768A (en) * | 2018-06-29 | 2018-11-06 | 山东大学 | A kind of assorted fibre microcellulor composite material sucker rod of self-repair function |
| CN108930520A (en) * | 2018-07-23 | 2018-12-04 | 山东大学 | A kind of composite material sucker rod with self-regulation shock resistance structure |
| CN109251332B (en) * | 2018-08-20 | 2021-07-20 | 浙江亚太机电股份有限公司 | Chopped carbon fiber reinforced phenolic resin matrix composite material and preparation method thereof |
| CN111452438A (en) * | 2020-05-19 | 2020-07-28 | 山东大学 | Thermoplastic composite film |
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| CN106285499A (en) * | 2016-08-11 | 2017-01-04 | 山东中恒碳纤维科技发展有限公司 | A kind of continuous carbon fibre composite material sucker rod with electric heating function and preparation method thereof |
| CN106968609A (en) * | 2017-04-19 | 2017-07-21 | 大庆市华禹石油机械制造有限公司 | A kind of carbon-fiber continuous rod of built-in continuous cotton-shaped wearing layer |
| CN107443774A (en) * | 2017-08-09 | 2017-12-08 | 山东大学 | A kind of spontaneous thermal element of flexible continuous carbon fibre and its structure |
| CN208267771U (en) * | 2018-02-01 | 2018-12-21 | 山东中恒景新碳纤维科技发展有限公司 | Pumping rod of composite carbon fiber material with autonomous repair function |
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