CN101114024A - Drifting indoor barrel with carbon fiber composite and manufacturing method therefor - Google Patents
Drifting indoor barrel with carbon fiber composite and manufacturing method therefor Download PDFInfo
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- CN101114024A CN101114024A CNA2007100725839A CN200710072583A CN101114024A CN 101114024 A CN101114024 A CN 101114024A CN A2007100725839 A CNA2007100725839 A CN A2007100725839A CN 200710072583 A CN200710072583 A CN 200710072583A CN 101114024 A CN101114024 A CN 101114024A
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Abstract
A drifting indoor tube made of a carbon fiber composite and a making method relates to a drifting indoor tube and the making method. The tube is especially applicable to a drifting chamber of a detector. The invention solves the problem that the drifting indoor tube with light weight, high intensity and a thin wall by making use of the carbon fiber composite. The drifting indoor tube comprises a carbon fiber composite tube (2) and an aluminum foil shielding layer (3) which is adhered to the inner and outer surfaces of the carbon fiber composite tube (2). The method comprises the following steps: an inner mold is made and adhered with the aluminum foil. Then a unidirectional carbon fiber prepreg tape is made and the tube body of the drifting indoor tube is molded and solidified. Finally the inner and outer surfaces of a drifting chamber are adhered with the aluminum foil and solidified, de-molded and mechanically worked. The drifting indoor tube provided by the invention is characterized by light weight, high intensity, high modulus and good reliability; In addition, the drifting indoor tube can be easily made and can be suitably applied completely on the detector. And the drifting indoor tube provided by the invention has perfect performance index.
Description
Technical field
The present invention relates to a kind of drift chamber inner core and manufacture method thereof, this is simplified to be specially adapted in the drift chamber of BESIII detector.
Background technology
BEPC is the structure of research elementary particle and the advanced instrument of the characteristics of motion, and it is made up of straight line injector, storage rings, detector and Beijing Synchrotron Radiation Facility (BSRF).Positron-electron enters the injector after-acceleration and parts company with each other under the storage rings the action of a magnetic field, and energy reaches certain requirement back and clashes the appointed area in ring.The place is provided with a detector at the head-on collision point, is called for short Beijing spectrometer (BES), is the large-scale particle physics experimental provision that China designs voluntarily and develops; Various particle kinds, track, energy and momentum in order to produce behind the detecting collision carry out analyzing and processing by computing center at last again.BEPC and Beijing spectrometer are to operate in 2-5GeV in the world today can distinguish a unique collider and the spectrometer of specializing in τ-bright physical study.Drift chamber is positioned at the core position of detector, is divided into inner room and mistress's two parts.Inner room and mistress want 28936 of cloth silks altogether, and its end plates will carry the tension force of about 3.5 tons of silks.In order to guarantee the consistance of thread tension, in inner room and mistress's cloth silk process, adopt prestressed method.Before cloth silk not,, make the distortion behind intact of predeformation that end plates produce and the cloth consistent by the tension force of prestress bar simulation silk.In cloth silk process, shed the prestress that equates with cloth thread tension.Working gas in the drift chamber is a helium base mixed gas, and the drift chamber inner core is positioned at the nucleus of drift chamber.Fail in the prior art to provide a kind of be applied on the detector and have in light weight, intensity is high, the carbon fibre composite drift chamber inner core of thin-walled.
Summary of the invention
The present invention for solve in the prior art can't with carbon fibre composite produce in light weight, intensity is high, the problem of the drift chamber inner core of thin-walled, and then provides a kind of drift chamber inner core and manufacture method thereof of carbon fibre composite.
Technical scheme of the present invention is:
The drift chamber inner core of carbon fibre composite is made up of carbon fibre composite tube and foil shielding layer, and described foil shielding layer sticks to respectively on the surfaces externally and internally of carbon fibre composite tube.
The manufacture method of the drift chamber inner core of carbon fibre composite realizes according to the following steps: one, the simplified core of preparation drift chamber inner core, after spraying one deck on the drift chamber inner core cylindrical shell core outside surface is with the epoxy resin adhesive liquid of acetone diluted, paste the aluminium foil that a layer thickness is 0.04～0.06mm again, evenly spray one deck bonding agent at aluminium foil surface again; Two, the preparation of unidirectional carbon fiber dimension preimpregnation band: with epoxy resin and arylamine solidified agent, imidazoles promoter by weight 1: (0.4～0.5): the ratio of (0.05～0.01) is mixed and made into glue, above-mentioned glue is made pellicle, the unidirectional carbon fiber dimension is laid in makes unidirectional carbon fiber dimension preimpregnation band on the pellicle again; Three, drift chamber inner core cylindrical shell moulding: twine the unidirectional carbon fiber dimension preimpregnation band, the hoop that prepare in 1 layer of carbon fiber, 2～3 layers of step 2 of lay and twine 1 layer of carbon fiber, the carbon fiber direction and the axially parallel of unidirectional carbon fiber dimension preimpregnation band with pasting on the drift chamber inner core cylindrical shell core of aluminium foil successively hoop in the step 1; Four, solidify; Five, the stickup of tube outer surface aluminium foil in the drift chamber: after the outside surface machining that the drift chamber inner core of completing steps four is simplified, evenly spray one deck bonding agent, pasting a layer thickness is aluminium foil and the curing of 0.04～0.06mm; Six, the whole demoulding of drift chamber inner core; Seven, the cylindrical shell with the drift chamber inner core of completing steps six carries out machining.
The present invention has following beneficial effect:
That the drift chamber inner core of carbon fibre composite provided by the present invention has is in light weight, bulk strength is high, modulus is high, the advantage of good reliability, and be easy to make processing, be fit to fully be applied in the drift chamber of BESIII detector in the BEPC key technological transformation engineering (BEPCII).
That the manufacture method of the drift chamber inner core of carbon fibre composite provided by the present invention can produce is in light weight, intensity is high, modulus is high, the drift chamber inner core of good reliability.The drift chamber inner core that utilizes the inventive method to make has extremely good performance index: the drift chamber inner core is under the situation of 500Kg axially loaded, and the axial deformation of inner core is less than 0.05mm; Magnetoconductivity is 1.005; The pressurize 8 hours under 1.1 atmospheric pressure of drift chamber inner core, pressure descend and are not more than 5 ‰; Under 1.1 atmospheric pressure, there is not gas leakage.Utilize the drift chamber inner core of the inventive method manufacturing can carry tension force about whole 300Kg of 8 signal element layers of inner room fully.In BEPC key technological transformation engineering (BEPCII), the upgrading of this Beijing spectrometer (BES) is improved to for the second time, and Beijing spectrometer after the upgrading is BESIII for the second time.BESIII drift chamber inner core is unprecedented; BESIII drift chamber inner core is the main member of BESIII drift chamber inner room.It is the vitals of BESIII drift chamber.This product succeed in developing the successful construction that has guaranteed the BESIII drift chamber.
Description of drawings
Fig. 1 is the front view of drift chamber inner core of the present invention, and Fig. 2 is Fig. 1 left view, and Fig. 3 is the A-A profile of Fig. 1.
Embodiment
Embodiment one: as Fig. 1, Fig. 2 and shown in Figure 3, the drift chamber inner core of the carbon fibre composite of present embodiment is made up of carbon fibre composite tube 2 and foil shielding layer 3, and described foil shielding layer 3 sticks to respectively on the surfaces externally and internally of carbon fibre composite tube 2.The drift chamber inner core is positioned at the nucleus of drift chamber, long 774mm, and internal diameter φ 126mm, wall thickness are that 1mm is thick, cylinder material is a carbon fibre composite.The aluminium foil that the inside and outside surface of drift chamber inner core is pasted with is used for keeping conducting with abutment ring; Distance 774 ± 0.08, the two seam end faces of two ends seam end face are to the verticality 0.1 of axis.
Embodiment two: as shown in Figure 3, the described carbon fibre composite tube 2 of present embodiment is made up of to lay layer 5 to winding layer 4 and unidirectional carbon fiber dimension preimpregnation tape spool carbon fiber ring, and described carbon fiber ring sticks to unidirectional carbon fiber dimension preimpregnation tape spool respectively on the surfaces externally and internally of lay layer 5 to winding layer 4.Adopt such structure, greatly strengthened simplified integral intensity of drift chamber inner core and axial compression resistance ability.Other composition is identical with embodiment one with annexation.
Embodiment three: as shown in Figure 1, the wall thickness of the described carbon fibre composite drift chamber of present embodiment inner core is 1mm.Adopt such structure,, be convenient to impingment particle and pass through in order to alleviate the simplified quality of drift chamber inner core.Other composition is identical with embodiment one with annexation.
Embodiment four: as depicted in figs. 1 and 2, be respectively equipped with shoulder 6 on the outer wall at the two ends of the described carbon fibre composite drift chamber of present embodiment inner core, being uniformly distributed along the circumference on described shoulder 6 is provided with four circular holes 1.Adopt such structure, be convenient to simplified the installing and using of drift chamber inner core.Other composition is identical with embodiment one with annexation.
Embodiment five: the manufacture method of the carbon fibre composite drift chamber inner core of present embodiment realizes according to following steps: one, the simplified core of preparation drift chamber inner core, after spraying one deck on the drift chamber inner core cylindrical shell core outside surface is with the epoxy resin adhesive liquid of acetone diluted, paste the aluminium foil that a layer thickness is 0.04～0.06mm again, evenly spray one deck bonding agent at aluminium foil surface again; Two, the preparation of unidirectional carbon fiber dimension preimpregnation band: with epoxy resin and arylamine solidified agent, imidazoles promoter by weight 1: (0.4～0.5): the ratio of (0.05～0.01) is mixed and made into glue, above-mentioned glue is made pellicle, the unidirectional carbon fiber dimension is laid in makes unidirectional carbon fiber dimension preimpregnation band on the pellicle again; Three, drift chamber inner core cylindrical shell moulding: twine the unidirectional carbon fiber dimension preimpregnation band, the hoop that prepare in one deck carbon fiber, two～three layers of step 2 of lay and twine one deck carbon fiber, the carbon fiber direction and the axially parallel of unidirectional carbon fiber dimension preimpregnation band with pasting on the drift chamber inner core cylindrical shell core of aluminium foil successively hoop in the step 1; Four, solidify; Five, the stickup of tube outer surface aluminium foil in the drift chamber: after the outside surface machining with the drift chamber inner core cylindrical shell of completing steps four, evenly spray one deck bonding agent, to paste a layer thickness be the aluminium foil of 0.04～0.06mm and solidify; Six, the whole demoulding of drift chamber inner core; Seven, the cylindrical shell with the drift chamber inner core of completing steps six carries out machining.The carbon fiber content of the drift chamber inner core that present embodiment manufactures: 54～60% (number percents by volume).The curing system is in step 4: 120 ℃/2h～160 ℃/6h, naturally cool to room temperature.The curing system is in step 5: 90 ℃/4h, naturally cool to room temperature.After finishing above-mentioned each program, carry out axial compression test on request, the drift chamber inner core is totally checked, packs, transports, used.
The carbon fiber direction of the unidirectional carbon fiber dimension preimpregnation band that present embodiment adopts and axially parallel (0 ° of unidirectional carbon fiber dimension preimpregnation band lay) add carbon fiber ring to the method for twining.Because the wall thickness very thin (1mm) of drift chamber inner core is in order to reduce the coupling effect of barrel shop layer, the thickness of necessary strict controlling fiber winding layer and lay layer in forming process; In order more effectively to improve the axial rigidity of inner core, the lay direction of carbon fiber is very near axial direction in addition, and the low-angle winding requires very high to Wiring apparatus and auxiliary mould.Utilize the pre-dipping machine of fiber to become the method for unidirectional carbon fiber dimension preimpregnation band can improve the thickness stability of unidirectional carbon fiber dimension preimpregnation band prefabricated carbon fiber, all right strict controlling fiber is spread the gel content of layer; Owing to be manual lay, the lay of fiber is more flexible, can realize the lay of multi-angle.The unidirectional carbon fiber dimension preimpregnation band lay angle of tube structure layer, shop layer thickness, shop layer lay order and quantity are to determine that by the COMPOSITE FINITE ELEMENT structural design theory of maturation this rationality that is designed to the tube structure formable layer provides theoretical foundation.
The surfaces externally and internally of the drift chamber inner core of present embodiment all will be pasted one deck aluminium foil, requires the paste layer surfacing, and is smooth, no bubble, burr; Aluminium foil is very sensitive to temperature, and local small temperature variation all can make the aluminium foil buckling deformation; When pasting aluminium foil, the suffered external force of aluminium foil is inhomogeneous will to make aluminium foil generation local plastic deformation, is not easy to paste smooth.Because aluminium foil is seep through not, the bonding agent that bonding aluminium foil is used must be evenly distributed on the bonding plane, and its consumption can not be very few, can not be too many, otherwise just paste uneven or sticking not firm.Bonding agent has certain tack, does not have too many volatile matter to produce during curing, and aluminium foil and carbon fibre composite are had good adhesive property.Tube inner surface aluminium foil paste layer is pasted at the core outside surface in the drift chamber, and forming composite is simplified then; Outside surface aluminium foil paste layer is pasted at the compound substance barrel outer surface.
The matrix resin that present embodiment is selected for use (epoxy resin) need have preferably intensity, heat resistance, with good wetting property and the interlaminar shear strength of carbon fiber, also must have lower viscosity, certain operating period and manufacturability simultaneously.Therefore according to above-mentioned requirements, we screen different resins system, hardening agent, determine to adopt epoxy/amine system formulation.In the production run of unidirectional carbon fiber dimension preimpregnation band, resin system system and manufacturing process that inner core adopts have reached the level of similar resin system of systems, can satisfy the use and the moulding requirement of product fully.
Embodiment six: present embodiment is two layers of unidirectional carbon fiber dimension of lay preimpregnation band in step 3.The control lay number of plies is 1mm with the wall thickness that guarantees the drift chamber inner core.Other step is identical with embodiment five.
Embodiment seven: the thickness that present embodiment drift chamber inner core cylindrical shell surfaces externally and internally in step 1 and step 5 is pasted aluminium foil is 0.05mm.The thickness that limits aluminium foil is for functions of use that guarantees the drift chamber inner core and the wall thickness of having controlled the drift chamber inner core.Other step is identical with embodiment five.
Embodiment eight: the bonding agent that sprays between the drift chamber inner core cylindrical shell surfaces externally and internally of present embodiment and the aluminium foil is J67.The adhesive effect of J67 is good.Other step is identical with embodiment five.
Embodiment nine: present embodiment adopts the ejection pressure buffering ring to carry out the demoulding in step 6.The wall thickness of drift chamber inner core is very thin; In knockout course, the fit-up gap of demoulding dish and core makes product nozzle edge unbalance stress probably, and product is caused damage.In order to solve the product nozzle edge unbalance stress problem that may cause owing to the fit-up gap of demoulding dish and core, at product stripping one end, processed an ejection pressure buffering ring, this ring can act on ejection pressure on the product equably, guarantees the smooth demoulding of drift chamber inner core.Other step is identical with embodiment five.
Embodiment ten: the described manufacturing drift chamber of present embodiment inner core material requested is no magnetic material.Adopt no magnetic material to be applied on the detector being fit to.Other step is identical with embodiment five.
Claims (10)
1. the drift chamber inner core of a carbon fibre composite is characterized in that it is made up of carbon fibre composite tube (2) and foil shielding layer (3), and described foil shielding layer (3) sticks to respectively on the surfaces externally and internally of carbon fibre composite tube (2).
2. the drift chamber inner core of carbon fibre composite according to claim 1, it is characterized in that described carbon fibre composite tube (2) is made up of to lay layer (5) to winding layer (4) and unidirectional carbon fiber dimension preimpregnation tape spool carbon fiber ring, described carbon fiber ring sticks to unidirectional carbon fiber respectively to winding layer (4) and ties up the preimpregnation tape spool on the surfaces externally and internally of lay layer (5).
3. the drift chamber inner core of carbon fibre composite according to claim 1, the wall thickness that it is characterized in that described carbon fibre composite drift chamber inner core is 1mm.
4. the drift chamber inner core of carbon fibre composite according to claim 1, it is characterized in that being respectively equipped with shoulder (6) on the outer wall at two ends of described carbon fibre composite drift chamber inner core, being uniformly distributed along the circumference on described shoulder (6) is provided with four circular holes (1).
5. the manufacture method of the drift chamber inner core of the described carbon fibre composite of claim 1, it is characterized in that it realizes according to following steps: one, preparation drift chamber inner core cylindrical shell core, after spraying one deck on the drift chamber inner core cylindrical shell core outside surface is with the epoxy resin adhesive liquid of acetone diluted, paste the aluminium foil that a layer thickness is 0.04～0.06mm again, evenly spray one deck bonding agent at aluminium foil surface again; Two, the preparation of unidirectional carbon fiber dimension preimpregnation band: with epoxy resin and arylamine solidified agent, imidazoles promoter by weight 1: (0.4～0.5): the ratio of (0.05～0.01) is mixed and made into glue, above-mentioned glue is made pellicle, the unidirectional carbon fiber dimension is laid in makes unidirectional carbon fiber dimension preimpregnation band on the pellicle again; Three, drift chamber inner core cylindrical shell moulding: twine the unidirectional carbon fiber dimension preimpregnation band, the hoop that prepare in one deck carbon fiber, two～three layers of step 2 of lay and twine one deck carbon fiber, the carbon fiber direction and the axially parallel of unidirectional carbon fiber dimension preimpregnation band with pasting on the drift chamber inner core cylindrical shell core of aluminium foil successively hoop in the step 1; Four, solidify; Five, the stickup of tube outer surface aluminium foil in the drift chamber: after the outside surface machining with the drift chamber inner core cylindrical shell of completing steps four, evenly spray one deck bonding agent, to paste a layer thickness be the aluminium foil of 0.04～0.06mm and solidify; Six, the whole demoulding of drift chamber inner core; Seven, the cylindrical shell with the drift chamber inner core of completing steps six carries out machining.
6. the manufacture method of the drift chamber inner core of carbon fibre composite according to claim 5 is characterized in that two layers of unidirectional carbon fiber dimension of lay preimpregnation band in the step 3.
7. the manufacture method of the drift chamber inner core of carbon fibre composite according to claim 5 is characterized in that the thickness of drift chamber inner core cylindrical shell surfaces externally and internally stickup aluminium foil in step 1 and the step 5 is 0.05mm.
8. the manufacture method of the drift chamber inner core of carbon fibre composite according to claim 5 is characterized in that the bonding agent that sprays between drift chamber inner core cylindrical shell surfaces externally and internally and the aluminium foil is J67.
9. the manufacture method of the drift chamber inner core of carbon fibre composite according to claim 5 is characterized in that adopting in the step 6 ejection pressure buffering ring to carry out the demoulding.
10. the manufacture method of the drift chamber inner core of carbon fibre composite according to claim 5 is characterized in that making drift chamber inner core material requested and is no magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100725839A CN100501447C (en) | 2007-07-30 | 2007-07-30 | Drifting indoor barrel with carbon fiber composite and manufacturing method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100725839A CN100501447C (en) | 2007-07-30 | 2007-07-30 | Drifting indoor barrel with carbon fiber composite and manufacturing method therefor |
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| CN101114024A true CN101114024A (en) | 2008-01-30 |
| CN100501447C CN100501447C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100725839A Active CN100501447C (en) | 2007-07-30 | 2007-07-30 | Drifting indoor barrel with carbon fiber composite and manufacturing method therefor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691831A (en) * | 2012-05-30 | 2012-09-26 | 浙江新世管道股份有限公司 | Sand pipe |
| CN115401960A (en) * | 2022-09-01 | 2022-11-29 | 哈尔滨玻璃钢研究院有限公司 | Resin-based composite material with high electromagnetic shielding efficiency and forming method and application thereof |
-
2007
- 2007-07-30 CN CNB2007100725839A patent/CN100501447C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691831A (en) * | 2012-05-30 | 2012-09-26 | 浙江新世管道股份有限公司 | Sand pipe |
| CN102691831B (en) * | 2012-05-30 | 2016-09-21 | 浙江新世管道股份有限公司 | A kind of RPM |
| CN115401960A (en) * | 2022-09-01 | 2022-11-29 | 哈尔滨玻璃钢研究院有限公司 | Resin-based composite material with high electromagnetic shielding efficiency and forming method and application thereof |
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| Publication number | Publication date |
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| CN100501447C (en) | 2009-06-17 |
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