CN103407056A - Integrally-forming method of n-shaped joint and I-shaped beam made of fiber-reinforced resin matrix composites - Google Patents
Integrally-forming method of n-shaped joint and I-shaped beam made of fiber-reinforced resin matrix composites Download PDFInfo
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- CN103407056A CN103407056A CN201310325680XA CN201310325680A CN103407056A CN 103407056 A CN103407056 A CN 103407056A CN 201310325680X A CN201310325680X A CN 201310325680XA CN 201310325680 A CN201310325680 A CN 201310325680A CN 103407056 A CN103407056 A CN 103407056A
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Abstract
The invention discloses an integrally-forming method of an n-shaped joint and an I-shaped beam made of fiber reinforced resin matrix composites. The integrally-forming method comprises five steps as follows: (1), preparing a preformed fiber body of a matrix structure; (2), putting the preformed fiber body in a mold, performing positioning on the preformed fiber body, and closing the mold; (3), pumping vacuum, injecting resin to the mold, performing heating and solidifying; (4), opening the mold to take out the matrix structure; (5), machining and decomposing the matrix structure to obtain the n-shaped joint and the I-shaped beam. According to the integrally-forming method, the RTM integral forming of the n-shaped joint and the I-shaped beam is realized through the mold at the same time. Therefore, the production efficiency is improved, and the manufacturing cost is lowered.
Description
Technical field
The invention provides the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint and I-beam, belong to the manufacture technology of composite material field.
Background technology
Π type joint and I-beam are the common structures in aircraft, transmit and bear take off, cruise and landing mission in the various load that transmit of wing and fuselage.With metal material, compare, the I-beam, the Π type joint weight that adopt fiber-reinforced resin matrix compound material to make are less, thereby in aeroplane structure design, have obtained increasing favor and application.In order further to reduce construction weight, need to carry out the integration technological design to these members.Although the global formation that traditional autoclave method can implementation structure, be restricted in actual applications because its processing cost is too high.Resin transfer molding technique (RTM), as a kind of liquid integral forming method cheaply, relatively is suitable for the suitability for industrialized production of fiber-reinforced resin matrix compound material Π type joint and I-beam.By the RTM method, prepare fiber-reinforced resin matrix compound material Π type joint and I-beam, traditional method need to be prepared respectively corresponding mould, be prepared separately, therefore, production efficiency is lower, and increased cost, need to improve traditional RTM method for the preparation of fiber-reinforced resin matrix compound material Π type joint and I-beam.
Summary of the invention
The object of the present invention is to provide the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint and I-beam, to solve the technical problem that traditional forming method production efficiency is lower and cost is high of fiber-reinforced resin matrix compound material Π type joint and I-beam.
The technical solution adopted in the present invention is as follows:
The integral forming method of a kind of fiber-reinforced resin matrix compound material Π of the present invention type joint and I-beam, its step is as follows:
The perform manufacturing of step 2, the precursor structure that will prepare is put into mould, then locates matched moulds.
Wherein, in the normally balanced symmetrical laying scheme of " the laying scheme of design " described in step 1, the index that the concrete laying number of plies, laying angle and laying ratio will realize as required designs; At " setting agent " described in step 1, it is a kind of macromolecular material, the compatibility that need to have with the resin for the preparation of fiber-reinforced resin matrix compound material Π type joint and I-beam, by at the fiber cloth interlayer, applying a small amount of setting agent, can play styling, make the perform manufacturing of precursor structure have certain globality; At " precursor structure " described in step 1, be a kind of composite case type structures, precursor structure carried out to the machining resolution and access fiber-reinforced resin matrix compound material Π type joint and I-beam.
Wherein, refer to the regulation to resin related process parameter in whole solidification process in " the curing process rules " described in step 3, the resin of every kind of model is all to there being the curing process rules that are complementary with it.At " resin " described in step 3, can be a kind of in epoxy resin, polyimides, thermoplastic polyurethane, polyamide, polyphenylene sulfide, PAEK or polyvinyl alcohol.For the RTM integral forming technique, more than to the pressure of resin by injection in mould, being controlled at 0.5MPa.
Wherein, in " the machining decomposition " described in step 5, refer to precursor structure 15 is carried out to the vertical and horizontal cutting.
The integral forming method of a kind of fiber-reinforced resin matrix compound material Π of the present invention type joint and I-beam, its beneficial effect is to realize simultaneously by a mold RTM global formation of fiber-reinforced resin matrix compound material Π type joint and I-beam, improve production efficiency, and reduced production cost.
The accompanying drawing explanation
Fig. 1 is the FB(flow block) of the method for the invention.
Fig. 2 is precursor structure cross sectional configuration schematic diagram.
Fig. 3 prepares mould and the core schematic diagram that precursor structure is used.
Fig. 4 is the precursor structure made and cuts fiber-reinforced resin matrix compound material Π type joint and the I-beam obtained.
In Fig. 2: 1. left C-shaped beam, 2. go up covering, 3. the right C-shaped beam, 4. descend covering, 5. inner rectangular box beam, 6. trigonum
In Fig. 3: 7. patrix, 8. left C-shaped core, 9. counterdie, 10. right C-shaped core, 11. sealing strips, 12. central cores, 13. left end caps, 14. right end caps.
In Fig. 4: 15. precursor structures, 16. fiber-reinforced resin matrix compound material Π type joints, 17. fiber-reinforced resin matrix compound material I-beams.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is made further instructions.
Flow chart of the present invention as shown in Figure 1, the perform manufacturing that first prepares precursor structure 15, the perform manufacturing of the precursor structure 15 that then will prepare is put into mould and is located matched moulds, vacuumize afterwards, annotate resin and heat up and solidify, after solidifying, the precursor structure 15 that has cured moulding is taken out in die sinking, finally precursor structure 15 is carried out to the machining decomposition, obtains fiber-reinforced resin matrix compound material Π type joint 16 and fiber-reinforced resin matrix compound material I-beam 17.
The specific embodiment of the invention step is as follows:
Wherein, in the normally balanced symmetrical laying scheme of " the laying scheme of design " described in step 1, the index that the concrete laying number of plies, laying angle and laying ratio will realize as required designs, at the fiber of " fiber cloth " described in step 1, can be a kind of in carbon fiber, glass fibre, Kevlar fiber, boron fibre and string, at " setting agent " described in step 1, it is a kind of macromolecular material, the compatibility that need to have with the resin for the preparation of fiber-reinforced resin matrix compound material Π type joint 16 and fiber-reinforced resin matrix compound material I-beam 17, by at the fiber cloth interlayer, applying a small amount of setting agent, can play styling, make the perform manufacturing of precursor structure have certain globality, at " precursor structure " the 15th described in step 1, a kind of composite case type structures, precursor structure 15 is carried out to the machining resolution and access fiber-reinforced resin matrix compound material Π type joint 16 and fiber-reinforced resin matrix compound material I-beam 17, the cross sectional configuration of precursor structure 15 as shown in Figure 2, precursor structure is by left C-shaped beam 1, upper covering 2, right C-shaped beam 3, lower covering 4, inner rectangular box beam 5 and trigonum 6 form, needs first prepare respectively left C type beam 1 when preparing the perform manufacturing of precursor structure 15, upper covering 2, right C type beam 3, lower covering 4, the perform manufacturing of inner rectangular box beam 5 and trigonum 6, they assemble again afterwards, finally obtain the perform manufacturing of precursor structure 15.
The perform manufacturing of step 2, the precursor structure that will prepare is put into mould, then locates matched moulds.
Wherein, at " mould " described in step 2 as shown in Figure 3, by patrix 7, left C-shaped core 8, counterdie 9, right C-shaped core 10, sealing strip 11, central authorities' core 12, left end cap 13 and right end cap 14 form, patrix 7 and upper covering laminating, left C- shaped core 8 and 1 laminating of left C-shaped beam, counterdie 9 and lower covering 4 laminatings, right C-shaped core 10 and right C type beam 3 laminatings, central authorities' core 12 and the 5 inner surface laminatings of inner rectangular box beam, patrix 7 and counterdie 9 can be by left C-shaped cores 8, right C-shaped core 10, left end cap 13 and right end cap 14 location, left end cap 13 and right end cap 14 can be by central core 12 location, sealing strip 11 is made by silica gel material, has sealing and elasticity relatively preferably, a whole set of mould is sealed.
Wherein, at " resin " described in step 3, can be a kind of in epoxy resin, polyimides, thermoplastic polyurethane, polyamide, polyphenylene sulfide, PAEK and polyvinyl alcohol; In " the curing process rules " described in step 3, refer to the regulation to resin related process parameter in whole solidification process, the resin of every kind of model is all to there being the curing process rules that are complementary with it.For the RTM integral forming technique, more than to the pressure of resin by injection in mould, being controlled at 0.5MPa.
Claims (7)
1. the integral forming method of a fiber-reinforced resin matrix compound material Π type joint and I-beam, it is characterized in that: the method concrete steps are as follows:
Step 1, cover fiber cloth according to the laying scheme paving of design, the setting agent of employing between layers of fiber cloth is finalized the design, and prepares the perform manufacturing of precursor structure;
The perform manufacturing of step 2, the precursor structure that will prepare is put into mould, then locates matched moulds;
Step 3, vacuumize, when vacuum reaches requirement-0.1, start resin by injection in mould is filled the gap of the perform manufacturing of precursor structure, after treating the gap of perform manufacturing of the full precursor structure of resin filling, heats up curing according to the curing process rules of resin;
Step 4, solidify after, mold cools down, to room temperature, is opened to mould afterwards, take out the precursor structure that has cured moulding;
Step 5, precursor structure is carried out to the machining decomposition, finally obtain fiber-reinforced resin matrix compound material Π type joint and I-beam.
2. the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint according to claim 1 and I-beam, it is characterized in that: the normally balanced symmetrical laying scheme of " the laying scheme of design " described in step 1, the index that the concrete laying number of plies, laying angle and laying ratio will realize as required designs.
3. the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint according to claim 1 and I-beam, it is characterized in that: " setting agent " described in step 1 is a kind of macromolecular material, the compatibility that need to have with the resin for the preparation of fiber-reinforced resin matrix compound material Π type joint and I-beam, by at the fiber cloth interlayer, applying a small amount of setting agent, play styling, make the perform manufacturing of precursor structure have predetermined globality.
4. the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint according to claim 1 and I-beam, it is characterized in that: at " precursor structure " described in step 1, be a kind of composite case type structures, precursor structure carried out to the machining decomposition and obtain fiber-reinforced resin matrix compound material Π type joint and I-beam.
5. the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint according to claim 1 and I-beam, it is characterized in that: " curing process rules " described in step 3 refer to the regulation to resin related process parameter in whole solidification process, and the resin of every kind of model is all to there being the curing process rules that are complementary with it.
6. the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint according to claim 1 and I-beam, it is characterized in that: " resin " described in step 3, a kind of in epoxy resin, polyimides, thermoplastic polyurethane, polyamide, polyphenylene sulfide, PAEK and polyvinyl alcohol, for the RTM integral forming technique, more than to the pressure of resin by injection in mould, being controlled at 0.5MPa.
7. the integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint according to claim 1 and I-beam, it is characterized in that: " machining decomposition " described in step 5 refers to precursor structure 15 carried out to the vertical and horizontal cutting.
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| CN201310325680.XA CN103407056B (en) | 2013-07-30 | 2013-07-30 | The integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint and I-beam |
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| CN201310325680.XA CN103407056B (en) | 2013-07-30 | 2013-07-30 | The integral forming method of a kind of fiber-reinforced resin matrix compound material Π type joint and I-beam |
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| CN103407056B CN103407056B (en) | 2015-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107901448A (en) * | 2017-11-09 | 2018-04-13 | 湖北三江航天江北机械工程有限公司 | The compound skirt cure under pressure method of major diameter |
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| JP2012139834A (en) * | 2010-12-28 | 2012-07-26 | Toray Ind Inc | Composite molding body and method of manufacturing the same |
| CN102751082A (en) * | 2012-07-05 | 2012-10-24 | 珠海市康定电子股份有限公司 | Production method of low-frequency transformer skeleton |
| US20120315455A1 (en) * | 2010-02-23 | 2012-12-13 | Toray Industries, Inc. | Preform and method for manufacturing the same |
| CN102910122A (en) * | 2012-09-20 | 2013-02-06 | 山东只楚民营科技园股份有限公司汽车内饰件分公司 | Automotive door trim panel with partially embedded lining and manufacturing method thereof |
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Patent Citations (4)
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| US20120315455A1 (en) * | 2010-02-23 | 2012-12-13 | Toray Industries, Inc. | Preform and method for manufacturing the same |
| JP2012139834A (en) * | 2010-12-28 | 2012-07-26 | Toray Ind Inc | Composite molding body and method of manufacturing the same |
| CN102751082A (en) * | 2012-07-05 | 2012-10-24 | 珠海市康定电子股份有限公司 | Production method of low-frequency transformer skeleton |
| CN102910122A (en) * | 2012-09-20 | 2013-02-06 | 山东只楚民营科技园股份有限公司汽车内饰件分公司 | Automotive door trim panel with partially embedded lining and manufacturing method thereof |
Non-Patent Citations (1)
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| 罗楚养等: "复合材料RTM 十字型接头疲劳性能对比实验研究", 《材料工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901448A (en) * | 2017-11-09 | 2018-04-13 | 湖北三江航天江北机械工程有限公司 | The compound skirt cure under pressure method of major diameter |
| CN107901448B (en) * | 2017-11-09 | 2020-05-22 | 湖北三江航天江北机械工程有限公司 | Large-diameter composite skirt compression curing method |
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