CN1641130A - Vacuum flexible bag method of structure reinforcing for fiber external pasting - Google Patents
Vacuum flexible bag method of structure reinforcing for fiber external pasting Download PDFInfo
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- CN1641130A CN1641130A CN 200410002382 CN200410002382A CN1641130A CN 1641130 A CN1641130 A CN 1641130A CN 200410002382 CN200410002382 CN 200410002382 CN 200410002382 A CN200410002382 A CN 200410002382A CN 1641130 A CN1641130 A CN 1641130A
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Abstract
To stick the fiber on structure, depending on the vacuum to take to press and the gentle vacuum bag, make fiber and the structure things close to stick and firm glue to connect. Include two kinds of methods:1, the vacuum absorbs bag to press- need to reinforce the part in the structure thing, use the vacuum bag( thin film) to wrap the fiber material closely, depend on the vacuum exclusion fiber, and air( air) in the structure; The resin inhalation by the minus press, through the resin fluxion and permeating, carrying out soakage to the fiber product and the thing to glue; carry on solid combine connect under the indoor temperature, make the fiber reinforce layer and the structure things, compound the formation of whole structure. 2, the prepare soak materials vacuum bag to press-glue to make the fiber soak through, (the resin don't be solid) into' prepare soak materials' first (use the resin); Use the vacuum thin film prepare to cover the prepare soak materials, closing in the appointed structure part; Take out the vacuum, take to under the function of minus press, prepare soak materials wrap the closing structure part in the right appoint; take out the vacuum, under the function of minus press, prepare soak materials solid become the type (heat or radiate) solid turn, carry out to reinforce to glue. The vacuum bag presses method for gluing is easy to control and connecting credibility, saving material, environment is protected.
Description
Technical field:
The present invention is mainly used on works and pastes fibrous material and carry out the engineering construction of reinforcing.
Works comprises: concrete structure, reinforced concrete structure and steel work such as bridge, house, tunnel, dykes and dams, water channel, high tower, chimney, industrial pylon, plant equipment.
Fibrous material comprises: goods such as carbon fiber, glass fiber, Fypro (Kevlar fiber), high-strength polyethylene, nylon fiber.
Background technology:
" external strengthening with external bonding " refers to paste fibrous material, fibrous composite (FRP) plate that has solidified, steel plate etc. on the works surface.Nihon Sho-Bond Construction K. K. has obtained patent---the method for reinforcing concrete buildings (＜notification number〉1231371).Job practices in this patent has three kinds:
1. perfusion---between steel plate, FRP plate and concrete, pour into resin adhesive.
2. overlay method---at the bonding plane adhesive coating, exerting pressure is bonded in steel plate or FRP plate on the works.
3. Method for bonding---directly fibre is pasted on body structure surface with resin adhesive.
At present, Method for bonding all is to implement by manual, and its basic operation is: on bonding plane, apply one deck bonding adhesive, paving one deck fiber; Be coated with one deck bonding adhesive again, repave and paste second layer fiber, repeat until requiring the number of plies.
The present invention proposes the 4th kind of method---vacuum bag pressure method.Promptly utilize the negative pressure of vacuum effect to carry out the bonding of fibrous material, comprise two kinds of " vacuum suction bag pressure " and " prepreg vacuum bag pressures ".
The present invention removes and can be applicable to the concrete structure beyond the region of objective existence, also is applicable to steel structure.
Summary of the invention:
The principle of vacuum bag pressure method: rely on negative pressure of vacuum and flexible vacuum bag to make that fiber and works (concrete or steel work) fit tightly, strong bond when pasting fiber.(seeing accompanying drawing) comprises following two kinds of methods:
1. vacuum suction bag is pressed---and need reinforce the position at works, (not resin pickup) fibrous material be coated sealing, rely on the gas (air) in vacuum eliminating fiber and the works with vacuum bag (film); Utilize negative pressure to suck resin, realize dipping fibre and adherend by resin flows, infiltration; And at room temperature be cured, make fiber reinforcing layer and works form compound overall structure.
2. the prepreg vacuum bag is pressed---and fiber is soaked into (resin is uncured) with resin adhesive earlier and make " prepreg "; Use vacuum bag (film) prepreg to be coated the structure position that is closed in appointment again; Vacuumize, prepreg curing molding under suction function (heating or radiation curing) is realized reinforcing bonding.
Description of drawings:
Accompanying drawing is an example with " U " shape stickup of concrete beam only, and the embodiment of vacuum suction pressure bag method is described.To other types structures such as plate, post and i beam, tee girder, case beams, it is similar to carry out the bonding reinforcing situation of fiber with vacuum suction pressure bag method, does not illustrate; Can adopt identical method to various types of steel work, not illustrate.
When adopting the prepreg vacuum bag pressure method, pouring nozzle and tacky resin part in the cancellation accompanying drawing.
The specific embodiment:
Vacuum bag pressure method comprises two kinds of " vacuum suction bag pressure ", " prepreg vacuum bag pressures ", and implementation step is as follows respectively:
1. " vacuum suction bag pressure " carries out the basic step that fiber is pasted the reinforcing of implementation structure thing:
1.1 works is reinforced the surfacing that face is pasted at the position
According to the works type, by the requirement of barbola work to stickup face polish, repair, cleaning etc.
1.2 the sealing of fiber paving and vacuum bag
On the stickup face of works lay (not impregnation) fiber; Cover (the vacuum bag size is greater than fiber) on it with vacuum bag (film); Be fixed on the works vacuum bag periphery and sealing.
Default vacuum nozzle and pouring nozzle on the vacuum bag, its position, spacing can be determined according to situations such as structure position shape, bonding adhesive sliminesses.
1.3 vacuumize
Close pouring nozzle, connect vacuum nozzle and vacuum pump (or other vacuum equipments); Start vacuum pump and vacuumize, until reaching a constant negative pressure pressure.
1.4 the vacuum of bonding adhesive sucks
According to calculating consumption preparation resin adhesive; Open pouring nozzle, under negative pressure of vacuum, resin is sucked fibrage.Can observe the dipping situation of fiber by transparent vacuum bag, fully until dipping.Negative pressure of vacuum is lost during suction, can suitably replenish.
1.5 pressurize, curing molding
Keep negative pressure of vacuum to resin adhesive gel, curing.
1.6 remove vacuum bag, finishing
After resin adhesive curing is finished, remove vacuum bag; Repair reinforcing the position.
2. " prepreg vacuum bag pressure " carries out the basic step that fiber is pasted the reinforcing of implementation structure thing:
2.1 reinforcing the position, works pastes the surfacing of face (with 1.1)
According to the works type, by the requirement of barbola work polish, repair, cleaning etc.
2.2 the paving of prepreg and the sealing of vacuum bag
Lay prepreg on the stickup face of works; Cover (the vacuum bag size is greater than prepreg) on it with vacuum bag (film); Be fixed on the works vacuum bag periphery and sealing.
Default vacuum nozzle on the vacuum bag, its position, spacing can be determined according to situations such as structure position shapes.
2.3 vacuumize (with 1.3)
Connect vacuum nozzle and vacuum pump (or other vacuum equipments); Start vacuum pump and vacuumize, until reaching a constant negative pressure pressure.
2.4 pressurize, curing molding (with 1.5)
Keep negative pressure of vacuum to resin adhesive gel, curing.(adopting modes such as heating or radiation to cause curing)
2.5 remove vacuum bag, finishing (with 1.6)
After resin adhesive curing is finished, remove vacuum bag; Repair reinforcing the position.
The characteristics of vacuum bag pressure method: vacuum low-pressure pressure forming; Flexible pouch covers as outer mold; Closed moulding.Compliance to structure is good; Enclosed construction thing crack well; Controlled preparing adhesive consumption, interface bondline thickness, resin/proportion of fibers; The defective that the hand-dipped of forgoing fully operation causes; Can reduce spillage of material greatly; Good condition of cure is provided, guarantees solidification effect; Fibrous reinforcement layer after the moulding has better physical and mechanical property; Environmental protection; Can carry out whole process supervision.
Claims (6)
1. one kind is utilized negative pressure of vacuum to carry out the structural strengthening method that fiber is pasted, and bonding process carries out under negative pressure of vacuum.
2. adopt flexible vacuum bag (film), with fiber-covered also sealing on works, extract the air that is sealed in the vacuum bag out, external pressure acts on fiber by vacuum bag, can closely fit bonding with works to making fiber.
3. comprise " vacuum suction bag pressure " (sucking resin by vacuum realizes bonding) and " prepreg vacuum bag pressure " (the pre-soaked resin of fiber, bonding under negative pressure) two kinds of method of attaching.
4. this patent is applicable to concrete structure, reinforced concrete structures, steel structure.
5. fibrous material comprises: each fibrid and goods such as carbon fiber, glass fiber, Fypro (Kevlar fiber etc.), high-strength polyethylene, nylon fiber.
6. resin comprises all kinds of organic and inorganic sqtructural adhesives and all kinds of grouting agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410002382 CN1641130A (en) | 2004-01-10 | 2004-01-10 | Vacuum flexible bag method of structure reinforcing for fiber external pasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410002382 CN1641130A (en) | 2004-01-10 | 2004-01-10 | Vacuum flexible bag method of structure reinforcing for fiber external pasting |
Publications (1)
| Publication Number | Publication Date |
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| CN1641130A true CN1641130A (en) | 2005-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410002382 Pending CN1641130A (en) | 2004-01-10 | 2004-01-10 | Vacuum flexible bag method of structure reinforcing for fiber external pasting |
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| CN (1) | CN1641130A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808525A (en) * | 2011-06-02 | 2012-12-05 | 福懋兴业股份有限公司 | Reinforcing jacket and reinforcing method of concrete column |
| CN102019693B (en) * | 2009-09-10 | 2013-08-07 | 中国航空工业集团公司北京航空制造工程研究所 | Preparation method of prepreg blank with corner and forming device thereof |
| CN105984156A (en) * | 2016-02-14 | 2016-10-05 | 芜湖金光汽车配件有限责任公司 | Repair method for defects of RTM product |
| CN106555481A (en) * | 2016-10-27 | 2017-04-05 | 湖南大学 | The device and method of prestretching fiber composite board reinforced steel concrete flexural member |
| CN106945309A (en) * | 2017-05-04 | 2017-07-14 | 华东交通大学 | Timber structure reinforcement process based on vacuum suction method |
| CN106958354A (en) * | 2017-05-04 | 2017-07-18 | 华东交通大学 | Reinforced column class strengthening member technique based on vacuum suction method |
| CN107053702A (en) * | 2017-05-04 | 2017-08-18 | 华东交通大学 | Steel member reinforcement process based on vacuum suction method |
| CN108297456A (en) * | 2018-03-01 | 2018-07-20 | 江苏金风科技有限公司 | Priming by vacuum auxiliary device and vacuum perfusion process |
| CN108775160A (en) * | 2018-07-02 | 2018-11-09 | 广东工业大学 | A kind of glue filling device and method for post stretching |
| CN109732939A (en) * | 2018-12-20 | 2019-05-10 | 菲普控股有限公司 | A kind of fiber-reinforced resin matrix compound material cladding bar product and preparation method thereof |
| CN110494617A (en) * | 2017-04-25 | 2019-11-22 | 东丽株式会社 | The glued construction and adhesive bonding method of FRP material and structural body |
-
2004
- 2004-01-10 CN CN 200410002382 patent/CN1641130A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019693B (en) * | 2009-09-10 | 2013-08-07 | 中国航空工业集团公司北京航空制造工程研究所 | Preparation method of prepreg blank with corner and forming device thereof |
| CN102808525A (en) * | 2011-06-02 | 2012-12-05 | 福懋兴业股份有限公司 | Reinforcing jacket and reinforcing method of concrete column |
| CN105984156A (en) * | 2016-02-14 | 2016-10-05 | 芜湖金光汽车配件有限责任公司 | Repair method for defects of RTM product |
| CN106555481A (en) * | 2016-10-27 | 2017-04-05 | 湖南大学 | The device and method of prestretching fiber composite board reinforced steel concrete flexural member |
| CN106555481B (en) * | 2016-10-27 | 2018-08-14 | 湖南大学 | The device and method of prestretching fiber composite board reinforced steel concrete flexural member |
| CN110494617A (en) * | 2017-04-25 | 2019-11-22 | 东丽株式会社 | The glued construction and adhesive bonding method of FRP material and structural body |
| CN106945309A (en) * | 2017-05-04 | 2017-07-14 | 华东交通大学 | Timber structure reinforcement process based on vacuum suction method |
| CN106958354A (en) * | 2017-05-04 | 2017-07-18 | 华东交通大学 | Reinforced column class strengthening member technique based on vacuum suction method |
| CN107053702A (en) * | 2017-05-04 | 2017-08-18 | 华东交通大学 | Steel member reinforcement process based on vacuum suction method |
| CN108297456A (en) * | 2018-03-01 | 2018-07-20 | 江苏金风科技有限公司 | Priming by vacuum auxiliary device and vacuum perfusion process |
| CN108775160A (en) * | 2018-07-02 | 2018-11-09 | 广东工业大学 | A kind of glue filling device and method for post stretching |
| CN109732939A (en) * | 2018-12-20 | 2019-05-10 | 菲普控股有限公司 | A kind of fiber-reinforced resin matrix compound material cladding bar product and preparation method thereof |
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