CN208650803U - A kind of composite material sucker rod with self-regulation shock resistance structure - Google Patents
A kind of composite material sucker rod with self-regulation shock resistance structure Download PDFInfo
- Publication number
- CN208650803U CN208650803U CN201821169404.3U CN201821169404U CN208650803U CN 208650803 U CN208650803 U CN 208650803U CN 201821169404 U CN201821169404 U CN 201821169404U CN 208650803 U CN208650803 U CN 208650803U
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- composite material
- fiber
- layer
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model provides a kind of composite material sucker rod with self-regulation shock resistance structure.The composite material sucker rod successively mixes toughness fiber enhancing thermoplas tic resin composite self-regulation anti-impacting layer by center assorted fibre enhancing thermoset ting resin composite rigidity sandwich layer, middle part reed structure from inside to outside and surface honeycomb sandwich structures carbon fiber anti-corrosion layer forms.Each structure is by rationally using multiple fiber hybrid combination; to effectively play the overall characteristic of multiple fiber; so that the sucker rod of the utility model has the rigidity of sucker rod core, middle layer for the self-regulation protection of underground impact force and the corrosion resistance characteristic of surface hollow structure loss of weight simultaneously; to effectively improve sucker rod to the adaptability of underground complex environment, and effectively improve sucker rod service life.
Description
Technical field
The utility model belongs to technical field of oil production engineering, and in particular to a kind of with the compound of self-regulation shock resistance structure
Material sucker rod.
Background technique
As the continuous development and oil recovery field of process for petroleum recovery are to working efficiency and complex environment and abandoned oil
The continuous improvement of well effective rate of utilization becomes the utilization of the oil well of complex working condition and geological conditions the weight for guaranteeing oil recovery effect
Point, and increasingly sophisticated subsurface environment is faced, sucker rod during the work time will be more by stony layer in oil pumping process
Impact, traditional pumping rod made by steel can inevitably generate surface damage in impact or even the bending of sucker rod caused to become
Shape.
Composite material sucker rod is a kind of novel light sucker rod product, has light-weight, comprehensive mechanics excellent etc.
Advantage in the prior art to consider through addition high-performance fiber such as with high-intensitive and high modulus fibre to enhance pumping more
The impact resistance of the beam hanger body of rod, however since composite material is multiphase composite construction, the interfacial structure of fiber-reinforced resin matrix
It is most important for overall structure stability, so to guarantee the tolerance for complicated shock environment, it is necessary to multiple to tradition
The structure of condensation material sucker rod is further studied and is optimized.
Utility model content
In view of the above shortcomings of the prior art, inventor provides a kind of with self-regulated through long-term technology and practical exploration
Save the composite material sucker rod of shock resistance structure.The sucker rod successively enhances thermosetting property tree by center assorted fibre from inside to outside
Resin composite material rigidity sandwich layer, middle part reed structure mix toughness fiber enhancing thermoplas tic resin composite's self-regulation shock resistance
Layer and surface honeycomb sandwich structures carbon fiber anti-corrosion layer composition.Each structure, which passes through, rationally uses multiple fiber hybrid combination,
To effectively play multiple fiber overall characteristic so that sucker rod of the invention simultaneously have sucker rod core rigidity, in
Interbed is for the self-regulation protection of underground impact force and the corrosion resistance characteristic of surface hollow structure loss of weight, to effectively improve pumping
Beam hanger effectively improves sucker rod service life to the adaptability of underground complex environment.
One of the purpose of this utility model is to provide a kind of composite material sucker rod with self-regulation shock resistance structure.
The two of the purpose of this utility model are to provide the application of above-mentioned sucker rod.
To achieve the above objectives, the present invention adopts the following technical solutions:
The first aspect of the utility model provides a kind of composite material oil pumping with self-regulation shock resistance structure
Bar；Sucker rod successively enhances thermoset ting resin composite rigidity sandwich layer, middle part reed knot by center assorted fibre from inside to outside
Structure mixes toughness fiber enhancing thermoplas tic resin composite self-regulation anti-impacting layer and surface honeycomb sandwich structures carbon fiber
Anti-corrosion layer composition；
The center assorted fibre enhancing thermoset ting resin composite rigidity sandwich layer is by high modulus fibre hybrid buildup warm
Thermosetting resin is constituted；The control of resin matrix content is in 30-60%, wherein the diameter of rigid sandwich layer is controlled according to requirements as 2-
4mm；
Further, the high modulus fibre be selected from high modulus carbon fiber, including but not limited to M40, M40J, M55, M60,
Any one or more in M60J；Further, inorganic ceramic fiber can also be mixed in high modulus carbon fiber, is such as aoxidized
Aluminum fiber, silicon carbide fibre, boron carbide fibre, basalt fibre, quartz fibre etc. it is therein any one；
Epoxy resin, phenolic resin, unsaturated polyester resin, Lauxite, thermosetting property can be selected in thermosetting resin matrix
Polyurethane resin, organic siliconresin, furane resins etc. it is therein any one；
The middle part reed structure mixes toughness fiber enhancing thermoplas tic resin composite and is self-regulated anti-impacting layer by height
Toughness fiber constitutes reed fabric construction hybrid buildup thermoplastic resin and constitutes；Resin matrix content is controlled in 30-60% range
Interior, middle part reed structure mixes the thickness control of toughness fiber enhancing thermoplas tic resin composite's self-regulation anti-impacting layer in 2-
Within the scope of 10mm；
Further, the high-tenacity fiber be aramid fiber, UHMWPE fiber, in pbo fiber any one or it is more
Kind combination；
The thermoplastic resin includes but is not limited to urethane, polyethylene, polypropylene, polyether-ketone, polyether-ether-ketone, polyphenylene sulfide
Any one of ether, polyamide, polyimides；
Fabric structure uses two-dimensional fabric laminated construction or three-dimensional braided structure, to form reed structure；Institute
Two-dimensional fabric laminated construction is stated as the composite structure of any one or more in plain weave, twill, satin weave；The 3 D weaving knot
Structure is any one in three-dimensional four-way, three-dimensional five-way or three-dimensional six-way；
When impacting by extraneous varying strength, reed structure generates the deformation of respective degrees, is formed to foreign impacts slow
Punching effect, to play the role of the shock resistance that is self-regulated；The high-tenacity fiber and thermoplastic resin material used simultaneously all has good
Good toughness and endurance damage performance, so that being conducive to the middle part reed structure mixes toughness fiber enhancing heat
Thermoplastic resin composite material self-regulation anti-impacting layer further plays self-regulation shock resistance；
The surface honeycomb sandwich structures carbon fiber anti-corrosion layer is by internal cellular interlayer structure (honeycomb core) and up and down
Surface layer constitute, the internal cellular interlayer structure use high-strength carbon fiber, including but not limited to T300, T700, T800,
T1000 is any one or more of；The surface layer is carbon fiber face sheets；Pumping is alleviated except very big using above-mentioned honeycomb sandwich structures
The self weight of the beam hanger body of rod, while enhancing the corrosion resistance of sucker rod, while foreign impacts are also functioned to certain dispersion and buffering
Effect.
Further, the internal cellular interlayer structure is with a thickness of 1-3mm, the surface layer with a thickness of 0.2~
0.7mm。
The second aspect of the utility model provides application of the above-mentioned composite material sucker rod in petroleum industry oil recovery.
The utility model has the beneficial effects that
The composite material oil pumping club shaft that the utility model is constituted using the combination of a variety of composite structures, wherein using more
Kind fiber hybrid combines while cooperating respective specific structure, has played the overall characteristic of multiple fiber conscientiously；Wherein by high-modulus
Fiber hybrid enhances thermosetting resin and constitutes sucker rod core offer oil pumping club shaft entirety high rigidity；And the spring of middle layer simultaneously
Chip architecture construction plays good self-regulation protective capability for underground impact force；Surface honeycomb sandwich structures have hollow knot
Structure alleviates oil pumping club shaft self weight, while enhancing the corrosion resistance of sucker rod, while also functioning to foreign impacts certain
Dispersion and buffer function are acted on by the coordinated of each structure, so that it is multiple to underground to effectively improve the utility model sucker rod
The adaptability in heterocycle border, and effectively improve sucker rod service life.
Detailed description of the invention
Fig. 1 is a kind of composite material sucker rod structural schematic diagram with self-regulation shock resistance structure, which includes: mixed
It is compound that miscellaneous fiber reinforced thermosetting resin composite material rigidity sandwich layer 1, reed structure mix toughness fiber enhancing thermoplastic resin
Material self-regulation anti-impacting layer 2, surface contain 4 three parts of carbon fiber anti-corrosion layer of honeycomb sandwich structures 3.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As previously mentioned, the impact that sucker rod during the work time will more by stony layer in oil pumping process at present, passes
The pumping rod made by steel of system can inevitably generate surface damage in impact or even cause the bending deformation of sucker rod.
In view of this, being provided a kind of with self-regulation shock resistance structure in a kind of specific embodiment of the utility model
Composite material sucker rod；Sucker rod successively enhances thermoset ting resin composite rigid core by center assorted fibre from inside to outside
Layer, middle part reed structure mix toughness fiber enhancing thermoplas tic resin composite self-regulation anti-impacting layer and surface honeycomb folder
Core structure carbon fiber anti-corrosion layer composition；
In the still another embodiment of the utility model, the center assorted fibre enhances thermoset ting resin composite
Rigid sandwich layer is made of high modulus fibre hybrid buildup thermosetting resin；The control of resin matrix content is in 30-60%, wherein rigidity
The diameter of sandwich layer is controlled according to requirements as 2-4mm；
In the still another embodiment of the utility model, the high modulus fibre be selected from high modulus carbon fiber, including but
It is not limited to any one or more in M40, M40J, M55, M60, M60J；It further, can also be in high modulus carbon fiber
Mix inorganic ceramic fiber, such as alumina fibre, silicon carbide fibre, boron carbide fibre, basalt fibre, quartz fibre are wherein
Any one；
Epoxy resin, phenolic resin, unsaturated polyester resin, Lauxite, thermosetting property can be selected in thermosetting resin matrix
Polyurethane resin, organic siliconresin, furane resins etc. it is therein any one；
In the still another embodiment of the utility model, the middle part reed structure mixes toughness fiber enhancing thermoplasticity
Resin composite materials self-regulation anti-impacting layer is made of reed fabric construction hybrid buildup thermoplastic resin high-tenacity fiber and constitutes；
Resin matrix content controls within the scope of 30-60%, and middle part reed structure mixes toughness fiber enhancing thermoplastic resin composite wood
The thickness control of material self-regulation anti-impacting layer is within the scope of 2-10mm；
In the still another embodiment of the utility model, the high-tenacity fiber be aramid fiber, UHMWPE fiber,
Any one or more combination in pbo fiber；
The thermoplastic resin includes but is not limited to urethane, polyethylene, polypropylene, polyether-ketone, polyether-ether-ketone, polyphenylene sulfide
Any one of ether, polyamide, polyimides；
Fabric structure uses two-dimensional fabric laminated construction or three-dimensional braided structure, to form reed structure；Institute
Two-dimensional fabric laminated construction is stated as the composite structure of any one or more in plain weave, twill, satin weave；The 3 D weaving knot
Structure is any one in three-dimensional four-way, three-dimensional five-way or three-dimensional six-way；When being impacted by extraneous varying strength, reed structure
The deformation for generating respective degrees forms buffer function to foreign impacts, to play the role of the shock resistance that is self-regulated；It uses simultaneously
High-tenacity fiber and thermoplastic resin material all have good toughness and endurance damage performance, to be conducive to
The middle part reed structure mixes toughness fiber enhancing thermoplas tic resin composite's self-regulation anti-impacting layer and further plays certainly
Adjust shock resistance；
In the still another embodiment of the utility model, the surface honeycomb sandwich structures carbon fiber anti-corrosion layer is by interior
Portion's honeycomb sandwich structures (honeycomb core) and upper and lower surface surface layer are constituted, and the internal cellular interlayer structure is using high-intensitive carbon fiber
Dimension, including but not limited to T300, T700, T800, T1000 are any one or more of；The surface layer is carbon fiber face sheets；Using
Above-mentioned honeycomb sandwich structures alleviate oil pumping club shaft self weight except very big, while enhancing the corrosion resistance of sucker rod, while right
Foreign impacts also function to certain dispersion and buffer function.
In the still another embodiment of the utility model, the internal cellular interlayer structure is with a thickness of 1-3mm, the table
Face surface thickness is 0.2~0.7mm.
In the still another embodiment of the utility model, above-mentioned composite material sucker rod is provided in petroleum industry oil recovery
Application.
The utility model is further described in conjunction with specific example, following instance is merely to explain that this is practical new
Type is not defined its content.If the experiment actual conditions being not specified in embodiment, usually according to normal condition, or
The condition recommended according to sales company；It is not particularly limited in the utility model, can be commercially available by commercial sources.
Embodiment 1
It is a kind of with self-regulation impact property layer composite material sucker rod rigid sandwich layer diameter be 2mm,
Enhancing structure therein uses M40 carbon fiber hybrid alumina fibre one-way fabric structure, wherein carbon fiber and inorfil
Mixing ratio is 1:1, will be solidified after hybrid fabrics composite epoxy resin, final resin content is 30%.
The self-regulation anti-impacting layer with a thickness of 3mm is prepared in rigid core layer surface, self-regulation anti-impacting layer uses reed knot
Structure composite structure, the structure are the two-dimentional plain weave fabric structure that aramid fiber mixes pbo fiber, and wherein hybrid ratio is 3:1,
The polyurethane resin for being 35% by the compound content of the fabric construction.
In centre, the preparation of self-regulation anti-impacting layer surface is corrosion-resistant with a thickness of the surface honeycomb sandwich structures carbon fiber of 1mm
Layer, the structure use the honeycomb sandwich structures of T300 carbon fiber, connect the surface carbon fiber with a thickness of 0.5mm on sandwich honeycomb surface
Tie up panel.
Embodiment 2
It is a kind of with self-regulation impact property layer composite material sucker rod rigid sandwich layer diameter be 2mm,
Enhancing structure therein uses M60J carbon fiber hybrid quartz fibre one-way fabric structure, and wherein carbon fiber and inorfil is mixed
Miscellaneous ratio is 2:1, will be solidified after hybrid fabrics composite phenolic resin, final resin content is 38%.
The self-regulation anti-impacting layer with a thickness of 6mm is prepared in rigid core layer surface, self-regulation anti-impacting layer uses reed knot
Structure composite structure, the structure are the two-dimentional twill weave structures of UHMWPE fiber hybrid pbo fiber, and wherein hybrid ratio is 4:
1, the acrylic resin for being 50% by the compound content of the fabric construction.
In centre, the preparation of self-regulation anti-impacting layer surface is corrosion-resistant with a thickness of the surface honeycomb sandwich structures carbon fiber of 1mm
Layer, the structure use the honeycomb sandwich structures of T1000 carbon fiber, connect the surface carbon with a thickness of 0.2mm on sandwich honeycomb surface
Fiber panel.
Embodiment 3
It is a kind of with self-regulation impact property layer composite material sucker rod rigid sandwich layer diameter be 4mm,
Enhancing structure therein uses M55 carbon fiber hybrid boron carbide fibre one-way fabric structure, wherein carbon fiber and inorfil
Mixing ratio is 2:1, will be solidified after the compound unsaturated polyester resin of hybrid fabrics, final resin content is 40%.
The self-regulation anti-impacting layer with a thickness of 2mm is prepared in rigid core layer surface, self-regulation anti-impacting layer uses reed knot
Structure composite structure, the structure are the three-dimensional four-way stereo weaving structure that pbo fiber mixes aramid fiber, and wherein hybrid ratio is
5:1, the polyphenylene sulfide for being 55% by the compound content of the fabric construction.
In centre, the preparation of self-regulation anti-impacting layer surface is corrosion-resistant with a thickness of the surface honeycomb sandwich structures carbon fiber of 2mm
Layer, the structure use the honeycomb sandwich structures of T800 carbon fiber, connect the surface carbon fiber with a thickness of 0.5mm on sandwich honeycomb surface
Tie up panel.
Embodiment 4
It is a kind of with self-regulation impact property layer composite material sucker rod rigid sandwich layer diameter be 3mm,
Enhancing structure therein uses M60 carbon fiber hybrid silicon carbide fibre one-way fabric structure, wherein carbon fiber and inorfil
Mixing ratio is 6:1, will be solidified after the compound thermosetting polyurethane resin of hybrid fabrics, and final resin content is 45%,
The self-regulation anti-impacting layer with a thickness of 10mm is prepared in rigid core layer surface, self-regulation anti-impacting layer uses reed knot
Structure composite structure, the structure are the three-dimensional five-way stereo weaving structure that pbo fiber mixes UHMWPE fiber, wherein hybrid ratio
For 3:2, the polyether-ether-ketone resin for being 54% by the compound content of the fabric construction.
In centre, the preparation of self-regulation anti-impacting layer surface is corrosion-resistant with a thickness of the surface honeycomb sandwich structures carbon fiber of 3mm
Layer, the structure use the honeycomb sandwich structures of T1000 carbon fiber, connect the surface carbon with a thickness of 0.7mm on sandwich honeycomb surface
Fiber panel.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of composite material sucker rod with self-regulation shock resistance structure, which is characterized in that the composite material sucker rod
Toughness is successively mixed by center assorted fibre enhancing thermoset ting resin composite rigidity sandwich layer, middle part reed structure from inside to outside
Fiber-reinforced thermoplastic resin composite material self-regulation anti-impacting layer and surface honeycomb sandwich structures carbon fiber anti-corrosion layer group
At；
The center assorted fibre enhancing thermoset ting resin composite rigidity sandwich layer is by high modulus fibre hybrid buildup thermosetting property
Resin is constituted；
The middle part reed structure mixes toughness fiber enhancing thermoplas tic resin composite and is self-regulated anti-impacting layer by high tenacity
Fiber constitutes reed fabric construction hybrid buildup thermoplastic resin and constitutes；
The surface honeycomb sandwich structures carbon fiber anti-corrosion layer is made of internal cellular interlayer structure and upper and lower surface surface layer.
2. a kind of composite material sucker rod as described in claim 1, which is characterized in that the diameter of rigid sandwich layer is wanted according to using
Asking control is 2-4mm.
3. a kind of composite material sucker rod as described in claim 1, which is characterized in that
The high modulus fibre is selected from high modulus carbon fiber, including any one in M40, M40J, M55, M60, M60J.
4. a kind of composite material sucker rod as described in claim 1, which is characterized in that
Thermosetting resin select epoxy resin, phenolic resin, unsaturated polyester resin, Lauxite, thermosetting polyurethane resin,
Any one in organic siliconresin, furane resins.
5. a kind of composite material sucker rod as described in claim 1, which is characterized in that middle part reed structure mixes toughness fiber
Enhance the thickness control of thermoplas tic resin composite's self-regulation anti-impacting layer within the scope of 2-10mm.
6. a kind of composite material sucker rod as described in claim 1, which is characterized in that the high-tenacity fiber is that aramid fiber is fine
Any one in dimension, UHMWPE fiber, pbo fiber.
7. a kind of composite material sucker rod as described in claim 1, which is characterized in that the thermoplastic resin include urethane,
Any one of polyethylene, polypropylene, polyether-ketone, polyether-ether-ketone, polyphenylene sulfide, polyamide, polyimides.
8. a kind of composite material sucker rod as described in claim 1, which is characterized in that middle part reed structure mixes toughness fiber
Enhance fabric structure in thermoplas tic resin composite's self-regulation anti-impacting layer and uses two-dimensional fabric laminated construction or three
Tie up braiding structure；
The two-dimensional fabric laminated construction is plain weave, twill, any one in satin weave；The three-dimensional braided structure is three-dimensional four
Any one into, three-dimensional five-way or three-dimensional six-way.
9. a kind of composite material sucker rod as described in claim 1, which is characterized in that the internal cellular interlayer structure uses
Any one of high-strength carbon fiber, including T300, T700, T800, T1000；The surface layer is carbon fiber face sheets.
10. a kind of composite material sucker rod as described in claim 1, which is characterized in that the internal cellular interlayer structure is thick
Degree is 1-3mm, and the surface layer is with a thickness of 0.2~0.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821169404.3U CN208650803U (en) | 2018-07-23 | 2018-07-23 | A kind of composite material sucker rod with self-regulation shock resistance structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821169404.3U CN208650803U (en) | 2018-07-23 | 2018-07-23 | A kind of composite material sucker rod with self-regulation shock resistance structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208650803U true CN208650803U (en) | 2019-03-26 |
Family
ID=65785611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821169404.3U Active CN208650803U (en) | 2018-07-23 | 2018-07-23 | A kind of composite material sucker rod with self-regulation shock resistance structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208650803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111119749A (en) * | 2019-12-30 | 2020-05-08 | 哈尔滨玻璃钢研究院有限公司 | Light oil pipe in pit for oil field |
-
2018
- 2018-07-23 CN CN201821169404.3U patent/CN208650803U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111119749A (en) * | 2019-12-30 | 2020-05-08 | 哈尔滨玻璃钢研究院有限公司 | Light oil pipe in pit for oil field |
| CN111119749B (en) * | 2019-12-30 | 2021-07-13 | 哈尔滨玻璃钢研究院有限公司 | Light oil pipe in pit for oil field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102514284B (en) | Thin ply laminates | |
| CN108930520A (en) | A kind of composite material sucker rod with self-regulation shock resistance structure | |
| Gururaja et al. | A review on recent applications and future prospectus of hybrid composites | |
| CN208650803U (en) | A kind of composite material sucker rod with self-regulation shock resistance structure | |
| CN209508726U (en) | A kind of fiber reinforcement composite sleeper | |
| WO2009008312A1 (en) | Composite material | |
| CN103660456B (en) | High-speed impact resistance composite material | |
| CN108678684A (en) | A kind of impact resistance composite material sucker rod | |
| CN103448338A (en) | Metal plate/fiber mixed reinforced sandwich plate | |
| CN201660735U (en) | Carbon glass basalt one-way assorted fiber cloth | |
| CN103342015B (en) | Timber strengthen textile composite board and radar, laser, sonar, infrared entirely stealthy in application | |
| CN202672489U (en) | Reinforced concrete column restrained by composite bushing | |
| CN100363546C (en) | Method suitable for sewing fiber composite material and sandwich structure thereof | |
| CN208645617U (en) | A kind of compound CLT beam of fiber reinforcement bamboo and wood | |
| CN208364060U (en) | A kind of impact resistance composite material sucker rod | |
| CN205310997U (en) | Novel fiber reinforcement polyurethane panel that hard bubbles | |
| CN105236838A (en) | Reinforced concrete and preparation method thereof | |
| CN204955594U (en) | Compound aramid fiber of nano meter aluminium does not have latitude cloth and manufacture equipment thereof | |
| Giancaspro | Influence of reinforcement type on the mechanical behavior and fire response of hybrid composites and sandwich structures | |
| US11014328B2 (en) | Method for adjusting the elasticity of a material and workpiece produced by this method | |
| CN103625040A (en) | Composite-material and metal-material laminating structure with fiber interface for toughening and method | |
| CN201539681U (en) | Continuous fiber-steel wire composite board | |
| CN203357980U (en) | Glass fiber enhanced resin-based panel/foam composite material | |
| CN106930467A (en) | Combined roof truss with FRP cable at lower chord | |
| CN106166873A (en) | A kind of heat-resisting composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |