CN105805432B - A kind of composite enhancing steel conduit and preparation method thereof - Google Patents
A kind of composite enhancing steel conduit and preparation method thereof Download PDFInfo
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- CN105805432B CN105805432B CN201610294228.5A CN201610294228A CN105805432B CN 105805432 B CN105805432 B CN 105805432B CN 201610294228 A CN201610294228 A CN 201610294228A CN 105805432 B CN105805432 B CN 105805432B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/70—Completely encapsulating inserts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2063/00—Use of EP, i.e. epoxy resins or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/06—Unsaturated polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of composite enhancing steel conduit and preparation method thereof, including steel pipe, and the fiber-reinforced layer and composite enhancement layer being coated on successively from inside to outside outside steel pipe.The enhancement layer of the present invention is double-layer structure, in order to ensure suitable modulus gradient between structure sheaf, coat the fiber-reinforced layer of a high modulus first outside steel pipe, coat a low modulus, the fiber reinforced thermosetting resin composite layer of low cost again outside the composite enhancement layer.Wherein high-modulus enhancement layer plays transmission stress, reduces the effect of steel penstock stress under artesian condition, and play carrying effect simultaneously with low modulus enhancement layer.By introducing high modulus fibre enhancement layer, reach the purpose uniformly carried between each structure sheaf.
Description
【Technical field】
The invention belongs to petroleum pipeline preparing technical field, is related to a kind of composite construction pipeline, and in particular to a kind of compound
Material reinforcement steel conduit and preparation method thereof.
【Background technology】
In high-pressure fluid transportation art, such as the pipeline of natural gas, most-often used is pipeline steel tube, but with to defeated
Pressurization pressure demand gradually steps up, and has higher requirement to pipeline steel tube bearing capacity.Most currently used raising pipeline is held
The method of pressure energy power is increase thickness of steel pipe or improves steel grade of steel level.The wall thickness of increase steel pipe not only increases piping cost,
And also increase the difficulty of pipeline welding, transport and construction.Improving pipeline grade of steel, duct wall can be thinned to a certain extent
Thickness, but the steel crack arrest ability of high intensity, and certain cycle is needed for the research and development of ultra high-strength pipeline steel, at present
The technical problems such as the welding of superelevation Grade, construction also need further perfect.
There is the bearing capacity that method improves metallic conduit using glass-fiber reinforced thermo-setting resin composite, it is general logical
The modes such as fiber winding are crossed, continuous glass fibre composite is coated on steel tube surface, strengthens the ring bearing capacity of pipeline.
But modulus differs larger between glass fibre and steel, big modulus difference easily causes metal and two structures of composite
Layer carrying is unbalanced, causes steel pipe to assume responsibility for most of load, composite carrying ratio is low, and its enhancing effect can not fully be sent out
Wave.The method for solving this problem at present is to use electrothermal prestressing (self-tightening), i.e., after-applied certain in the shaping of composite construction pipeline
Interior pressure, is plastically deformed inner layer steel pipe, due to the permanent set of steel pipe after unloading prestressing force, makes steel pipe compression chord,
Outer layer of composite material tension stress, when repressurization, composite enhancement layer can undertake higher load.Electrothermal prestressing is mesh
Before untill processing structure interlayer there is certain modulus difference to use a kind of relatively broad method, but steel pipe may be caused
Certain damage, and too high prestressing force can damage a part of fibre reinforced composites, and too low prestressing force can make stress
Distribution effects unobvious.Gas cylinder is post-processed using electrothermal prestressing more, but sealing is not present in the structure of gas cylinder in pressure process
The problem of, and when pipeline is carrying out autofrettage, it is necessary to be blocked to pipeline two.Therefore electrothermal prestressing not only makes pipe
There is certain risk in the integrality in road, also increase processing cost and the time of pipeline.
【The content of the invention】
The shortcomings that it is an object of the invention to overcome above-mentioned prior art, there is provided a kind of composite enhancing steel conduit and its
Preparation method.The pipeline combines the intensity of metal and composite, and body is alleviated compared with the steel pipe of equal bearing capacity
Weight, and electrothermal prestressing processing pipeline need not be used.
To reach above-mentioned purpose, the present invention is achieved using following technical scheme：
A kind of composite strengthens steel conduit, including steel pipe, and the fiber being coated on successively from inside to outside outside steel pipe increases
Strong layer and composite enhancement layer.
Further improve of the invention is：
It is also coated between the steel pipe and fiber-reinforced layer for anti-corrosion and strengthens the priming paint of caking property；Priming paint is using poly-
One or both of ester, polyurethane, vinyl esters, epoxy resin and thing mixed above are made.
External protection is additionally provided with outside the composite enhancement layer.
The composite strengthening layer is using any of E types glass fibre, S types glass fibre, ECR type glass fibres system
Into；External protection is resin or fabric, and resin is thermoplastic resin or thermosetting resin.
The steel pipe is one kind in carbon steel pipe, alloy pipe, stainless steel tube, and steel pipe is that multistage welds or surface is smooth
Whole steel pipe.
The fiber-reinforced layer is coated on the outer surface of steel pipe by the way of winding；Fiber-reinforced layer uses aramid fiber
Or superhigh molecular weight polyethylene fibers, wherein aramid fiber is using any of Kevlar29, Kevlar49, Kevlar149.
A kind of preparation method of composite enhancing steel conduit, comprises the following steps：
1) smooth treatment is carried out to outer surface of steel tube, priming paint is then coated in steel pipe outer layer；
2) fiber-reinforced layer is coated on by way of winding outside the steel pipe for scribbling priming paint, winds 2~10 layers, winding angle
Spend for 90 ± 5 °；
3) will be wrapped in after glass fiber impregnated thermosetting resin excessively outside fiber-reinforced layer, winding angle is 50~90 °, so
Solidified afterwards in the environment of 25~120 DEG C, composite layer is finally formed outside fibrous layer；
4) external protection is coated in the outer surface of composite enhancement layer by the way of spraying.
Further improve of the invention is：
The specific method of the step 1) is the primer coating in 2 hours first after outer surface of steel tube derusting by sandblasting cleaning；
Wherein, smooth treatment is polishing or will repaired using filler at out-of-flatness, it is ensured that outside fiber-reinforced layer inner surface and steel pipe
Surface contact is closer.
In the step 3), impregnation winding glue used is any in epoxy resin, unsaturated polyester (UP), vinyl esters
Kind.
In the step 4), external protection is resin or fabric, and resin is thermoplastic resin or thermosetting resin.
Compared with prior art, the invention has the advantages that：
The present invention before composite strengthening layer using the higher fiber-reinforced layer of modulus as transition zone, make each structure sheaf it
Between there is suitable modulus gradient, each structure sheaf carrying ratio evenly, reduces the stress of steel pipe under artesian condition, made more
Stress is undertaken by enhancement layer；
Further, the enhancement layer contacted in the present invention with steel tube surface is high modulus fibre enhancement layer, and preferably aramid fiber is fine
Peacekeeping superhigh molecular weight polyethylene fibers, uniform each structure sheaf load is played, reduces the effect of steel penstock stress under artesian condition.
Further, the high modulus fibre enhancement layer in the present invention serves part carrying effect.
Further, composite structural laminate of the present invention is that fiber infiltrates the structure sheaf that resin forms, preferably glass fibre
Strengthen thermoset ting resin composite, primarily serve the effect of carrying；
Further, external protection of the present invention is preferably resin bed or tissue layer, and has certain safeguard function.
【Brief description of the drawings】
Fig. 1 is the overall structure diagram of the present invention.
Wherein, 1- steel pipes；2- priming paint；3- fiber-reinforced layers；4- composite enhancement layers；5- external protections.
【Embodiment】
With reference to specific embodiment, the present invention will be further described.
Referring to Fig. 1, enhancement layer of the invention is double-layer structure, in order to ensure suitable modulus gradient between structure sheaf,
The fiber-reinforced layer of a high modulus is coated outside steel pipe first, coated again outside the composite enhancement layer a low modulus,
The fiber reinforced thermosetting resin composite layer of low cost.Wherein high-modulus enhancement layer plays transmission stress, reduces pressure-bearing shape
The effect of steel penstock stress under state, and play carrying effect simultaneously with low modulus enhancement layer.Strengthened by introducing high modulus fibre
Layer, reaches the purpose uniformly carried between each structure sheaf.Composite strengthens steel pipe as shown in Figure 1, including five structure sheafs,
Respectively steel pipe 1, priming paint 2, fiber-reinforced layer 3, composite enhancement layer 4, external protection 5, each structure sheaf selection and processing side
Formula is as follows：
Steel pipe can be with Types Below, such as carbon steel pipe, compo pipe, stainless steel tube according to use demand.Pipeline is such as welded tube,
Weld reinforcement should be handled, weld reinforcement can be polished off, it is possible to use filling and leading up resin or filling and leading up putty will repair at reinforcement
To seamlessly transitting, it is ensured that composite is in close contact with pipe surface when fiber is wound, without any space, dead angle.
Primer coating, primer material can be polyester, polyurethane, vinyl to metal tube within 2h after derusting by sandblasting and cleaning
The materials such as ester, epoxy resin and its mixture, antisepsis mainly is played to pipeline, and have good bonding with composite.
Aramid fiber or superhigh molecular weight polyethylene fibers etc., its mould can be selected in fiber transition zone close to steel pipe high-modulus
Amount is higher than composite less than steel.Aramid fiber can be Kevlar 29, Kevlar49, Kevlar149 etc., use winding etc.
Mode is coated on steel tube surface, forms the fiber-reinforced layer of high-modulus.
Low modulus composite layer preferably selects glass fibre, such as E types glass, S types glass or ECR type glasses, the tree used
Fat material can be epoxy resin, unsaturated polyester (UP), vinyl esters etc..The method wound using impregnation yarn, formed after solidification compound
Material reinforcement layer.Two enhancement layers can be designed as desired, and inner layer metal pipeline is wrapped in suitable angle and thickness
On.
External protection can be made up of resin film or tissue layer, such as polyethylene, polyvinyl chloride, polypropylene thermoplastic resin,
Or the thermosetting resin such as unsaturated polyester (UP), polyurethane, polyureas, it is coated on the outermost layer of compound pipeline complex pipeline.
Embodiment：
(1) structure design：As shown in Figure 1, the fiber-reinforced layer 3 of the present embodiment selects Kevlar49, and its modulus is
124GPa, composite enhancement layer 4 select E type glass fiber reinforced epoxy resins, and its modulus is 35-45GPa, relative to steel
206GPa modulus, Kevlar modulus play the work for transmitting stress more closely, therefore as the enhancement layer close to steel pipe
With.The fracture elongation of fiber-reinforced layer 3 and composite enhancement layer 4 is very close, and all 2% or so, similar fracture is prolonged
Stretch rate to ensure two structure sheafs while destroy, be not in the phenomenon of single structural ply carrying, favorably there are two structure sheaf enhancings
Played while effect.
Due under artesian condition, the circumference stress (σ of metal tubes) and axial stress (σa) relation be σs=2 σa, i.e.,
If meeting the requirement of pipeline axial stress, circumference stress can only meet half.For this feature, the present embodiment uses virtue
The method of the ring of synthetic fibre fibrous layer and composite enhancement layer winding, winding angle is on the basis of fibre bundle close-packed arrays are ensured
Nearly 90 °, the axial stress of compound pipeline complex pipeline is undertaken by steel pipe completely.
The stressing conditions of compound pipeline complex pipeline each structure sheaf under 20MPa of following structure using finite element method analysis：
1) without fiber-reinforced layer 3, without using the pipeline of autofrettage；
2) without fiber-reinforced layer 3, the pipeline of 28MPa autofrettages；
3) fiber-reinforced layer 3 is 2mm thick, and composite enhancement layer 4 is the thick pipelines of 4mm；
4) fiber-reinforced layer 3 is 1mm, and composite enhancement layer 4 is the pipeline of 5mm thickness.
Table 1 is the stress analysis result of these four pipelines each structure sheaf under 20MPa.
The lower each structure sheaf force analysis of four kinds of pipelines of the 20MPa pressure of table 1
For pipeline 1 and pipeline 2 without fiber-reinforced layer 3, result of calculation shows, under 20MPa operating pressure, in advance should
The stress of steel pipe drops to 323.1MPa by 410.9MPa after power processing, and the stress of enhancement layer is increased to by 91.1MPa
225.5MPa.By data above as can be seen that to make the steel layer and enhancing ply stress of glass fiber compound material enhancing steel pipe
Than more uniform, autofrettage is an effective method for distribution, but needs and apply stressing equipment and plugging device, and
Prestressing force is likely to result in steel pipe and certain damage occurs for composite.
And in the presence of working as fiber-reinforced layer 3 and composite enhancement layer 4 simultaneously, calculate the stress situation of three structure sheafs.
From table 1 it follows that the pipeline for increasing aramid fiber structure sheaf, the stress of the lower steel layer of pressure effect reduces, and strengthens ply stress
Improve.Under 20MPa pressure, for pipeline 3, stress that steel tube place receives be the stress value of steel pipe in 325MPa, with pipeline 2 very
It is close.Due to the addition of high modulus fibre enhancement layer 3, the stress of steel pipe under artesian condition is reduced, more stress are by additional
Enhancement layer undertake, and such a method do not need self-tightening processing, not only reduce pipeline and occur defect during self-tightening
Risk, it also simplify the procedure of processing of compound pipeline complex pipeline.
Because aramid fiber price is higher, in order to further cost-effective, the thickness of reduction aramid fiber structure sheaf, when fiber increases
The thickness of strong layer 3 be 1mm, and when the thickness of composite enhancement layer 4 is 5mm, steel layer stress increases during 20MPa, but fiberglass reinforced
The carrying ratio of layer remains above the pipeline 1 of non-autofrettage.
By finite element to four kinds of pipeline configuration layer force analysis above, the present embodiment is 2mm using fiber-reinforced layer 3
Thickness, composite enhancement layer 4 are the thick designs of 4mm, the scheme wound according to ring, composite enhancing steel pipe are made.
(2) procedure of processing：Steel pipe 1 is X65 grade of steels, external diameter 508mm, wall thickness 9.5mm pipeline steel tube, and steel pipe is polishing off
Blasting treatment, roughness Sa2.5 are carried out after weld reinforcement.
Priming paint 2 is general polyurethane antirust coat, completes coating work in 2h after sandblasting terminates, and thickness is 200 μm.
Fiber-reinforced layer 3 is Kevlar49 fiber-reinforced layers, and the mode wound using fiber is coated on pipe surface, is wound
Angle measures winding layer thickness close to 90 ° after one layer of aramid yarn winding terminates, until being wound to 2mm thickness.
Composite enhancement layer 4 is 158B type glass fiber reinforcement E51 type epoxy resin, and curing agent selects 5784, epoxy
Resin is 100 with curing agent mass ratio:40, in order to reduce the bubble in enhancement layer, solvent-free, resin content control in curing system
System is 30% or so, and winding angle is close to 90 °, and measurement winding layer thickness is until 4mm, winding terminate rear cold curing 24h.
External protection 5 is resin gel coat, wherein 100 parts of unsaturated polyester (UP) gel coating resin, 3 parts of aerosil, is disperseed
0.2 part of agent, 2 parts of defoamer, 1 part of methyl ethyl ketone peroxide, 1 part of cobalt naphthenate, resin is coated in glass using the mode of spraying
Fibrous composite surface, form the external protection of pipeline.
The technological thought of above content only to illustrate the invention, it is impossible to protection scope of the present invention is limited with this, it is every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, claims of the present invention is each fallen within
Protection domain within.
Claims (5)
1. a kind of composite strengthens steel conduit, it is characterised in that including steel pipe（1）, and it is coated on steel successively from inside to outside
Pipe（1）Outer fiber-reinforced layer（3）With composite enhancement layer（4）；Steel pipe（1）And fiber-reinforced layer（3）Between be also coated with
Priming paint for anti-corrosion and enhancing caking property（2）；Priming paint（2）Using one in polyester, polyurethane, vinyl esters, epoxy resin
Kind or two kinds and mixed above be made；Fiber-reinforced layer（3）Steel pipe is coated on by the way of winding（1）Outer surface；Fiber
Enhancement layer（3）Be made of aramid fiber or superhigh molecular weight polyethylene fibers, wherein aramid fiber using Kevlar29,
Any of Kevlar49, Kevlar149；The steel pipe（1）For carbon steel pipe or alloy pipe, and steel pipe（1）Welded for multistage
Connect or whole steel pipe that surface is smooth.
2. composite according to claim 1 strengthens steel conduit, it is characterised in that the composite enhancement layer（4）
It is additionally provided with external protection outside（5）.
3. composite according to claim 2 strengthens steel conduit, it is characterised in that the composite enhancement layer（4）
It is made of any of E types glass fibre, S types glass fibre, ECR type glass fibres；External protection（5）For resin or knit
Thing, resin are thermoplastic resin or thermosetting resin.
A kind of 4. preparation method of composite enhancing steel conduit described in claim 1-3 any one, it is characterised in that including
Following steps：
1）Smooth treatment is carried out to outer surface of steel tube, priming paint is then coated in steel pipe outer layer；Specific method is as follows：
First after outer surface of steel tube derusting by sandblasting cleaning, the primer coating in 2 hours；Wherein, smooth treatment is polishing or use
Filler will be repaired at out-of-flatness, it is ensured that fiber-reinforced layer inner surface and outer surface of steel tube contact are closer；
2）Fiber-reinforced layer is coated on by way of winding outside the steel pipe for scribbling priming paint, winds 2 ~ 10 layers, winding angle is
90±5°；
3）It will be wrapped in after glass fiber impregnated thermosetting resin excessively outside fiber-reinforced layer, winding angle is 50 ~ 90 °, Ran Hou
Solidified in the environment of 25 ~ 120 DEG C, composite enhancement layer is finally formed outside fiber-reinforced layer；Used in impregnation winding
Glue is any of epoxy resin, unsaturated polyester (UP), vinyl esters；
4）External protection is coated in the outer surface of composite enhancement layer by the way of spraying.
5. the preparation method of composite enhancing steel conduit according to claim 4, it is characterised in that the step 4）
In, external protection（5）For resin or fabric, resin is thermoplastic resin or thermosetting resin.
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| CN106833263A (en) * | 2016-12-30 | 2017-06-13 | 中国石油天然气集团公司 | A kind of composite strengthens steel pipe and its manufacturing process |
| CN107127985B (en) * | 2017-05-25 | 2018-12-28 | 南京工程学院 | A kind of manufacturing process of the super hybrid composite manner pipe of fibre metal |
| CN110696394A (en) * | 2019-10-14 | 2020-01-17 | 中石化石油机械股份有限公司沙市钢管分公司 | Method for preparing glass fiber reinforced plastic protective layer on polyethylene anticorrosive layer of steel pipe |
| CN110762296B (en) * | 2019-10-21 | 2022-02-15 | 吕文兴 | Novel multifunctional composite steel pipe and preparation method thereof |
| CN112717849B (en) * | 2021-01-18 | 2023-11-07 | 浙江骅龙环保科技有限公司 | Carbon steel composite reaction kettle and preparation process thereof |
| CN112918021A (en) * | 2021-03-03 | 2021-06-08 | 北京玻钢院复合材料有限公司 | Composite material reinforced conveying pipe and preparation method thereof |
| CN113846894A (en) * | 2021-09-30 | 2021-12-28 | 峻江建设有限公司 | Preparation method of extra-high voltage safety transmission tower |
| CN113844059B (en) * | 2021-10-14 | 2023-08-22 | 河北恒瑞复合材料有限公司 | Method for manufacturing fiber reinforced plastic pipe section module and pipe section module |
| CN115234750A (en) * | 2022-06-20 | 2022-10-25 | 东北大学 | Winding fiber/metal/viscoelastic material mixed pipeline with complex pipe shape and vibration and pressure resisting function and manufacturing method thereof |
| CN117139117A (en) * | 2023-08-30 | 2023-12-01 | 江苏恒美德新材料有限公司 | High-compression-resistance high-buffering energy-consumption fiber material |
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| IT1279371B1 (en) * | 1993-09-03 | 1997-12-10 | Shimano Kk | TUBULAR ELEMENT INCLUDING THE WINDING OF A PLURALITY OF LAYERS OF PRE-IMPREGNATED MATERIAL FOR USE FOR EXAMPLE AS A BARREL |
| US6670004B1 (en) * | 2000-08-02 | 2003-12-30 | Saint-Gobain Performance Plastics Corporation | Laminated nylon air brake tubing |
| CN103009716B (en) * | 2011-09-26 | 2016-02-10 | 蓝星(北京)化工机械有限公司 | A kind of carbon fibre composite and preparation method thereof and groove tank |
| CN104197114A (en) * | 2014-09-05 | 2014-12-10 | 中国石油集团渤海石油装备制造有限公司 | Composite steel tube used for oil and gas conveying pipeline and externally wound by glass fiber resin reinforcing protective layer |
| CN104372745B (en) * | 2014-11-25 | 2016-02-03 | 江苏法尔胜泓昇集团有限公司 | The anchoring process of carbon fibre composite drag-line |
| CN105014952B (en) * | 2015-08-18 | 2019-10-22 | 国电科学技术研究院 | A kind of glass steel panel reinforced structure production method |
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