CN103909658A - Composite material connecting skirt forming method and mold and inner rubber core mold forming mold - Google Patents
Composite material connecting skirt forming method and mold and inner rubber core mold forming mold Download PDFInfo
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- CN103909658A CN103909658A CN201410121135.3A CN201410121135A CN103909658A CN 103909658 A CN103909658 A CN 103909658A CN 201410121135 A CN201410121135 A CN 201410121135A CN 103909658 A CN103909658 A CN 103909658A
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- 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
- B29C70/36—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 impregnating by casting, e.g. vacuum casting
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- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
- B29C70/342—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 using isostatic pressure
Abstract
The invention discloses a composite material containing skirt forming method and mold and an inner rubber core mold forming mold. The method comprises the following steps: (1) manufacturing the forming mold, namely manufacturing an outer mold, an inner mold and the inner rubber core mold and sheathing the inner rubber core mold on the outer wall of the inner mold; (2) laying up; (3) preheating and vacuumizing the forming mold; (4) carrying out resin pretreatment; (5) injecting glue and solidifying, namely solidifying resin after glue injection, wherein the inner rubber core mold is expanded along with the increase of temperature to uniformly pressing a preform and enable the resin to fully infiltrate the preform; and (6) demolding and trimming. The forming mold structure adopts the inner rubber core mold; silicone rubber is adopted and a resin transfer molding (RTM) process is assisted to form the composite material containing skirt, and a double-sided mold is adopted, so that a product has the advantages of stable dimension, good quality consistence, controllable fiber and resin contents and the like; measures such as co-solidification and the adoption of the expandable core mold are adopted to reduce the porosity, increase the volume content of the fibers of the product and improve the mechanical property.
Description
Technical field
The present invention relates to solid rocket motor case forming technique, refer to particularly a kind of forming method, mould and rubber inner core mould thereof of composite joint skirt.
Background technology
Solid rocket motor case joint skirt is that the entirety of housing is extended, for realize that guided missile inter-stage section connects or with being connected of miscellaneous part, joint skirt need stand axial compression, moment of flexure, shearing, and the multiple load such as interior pressure, how stressing conditions more complicated, in the situation that not increasing joint skirt weight, simplify moulding process, and improve its performance, most important to the raising of whole motor body performance.
At present, composite joint skirt adopts " prepreg overlay+winding " forming method to carry out moulding conventionally, this forming method exposes following problem in process of production: 1) in forming process, only have a rigidity formpiston, and product external surfaces adopts silvalin to be wound around pressurization, time strangle trace, projection, and the appearance such as depression, cannot guarantee the fineness of product external surfaces, and then product design size is difficult to guarantee; 2) resin content adopts manual frictioning control, and which is larger to fibre damage, and frictioning degree is wayward, very big on motor body gross weight and specific impulse impact; 3) cannot moulding with the composite joint skirt of reinforcing rib structure, product structure efficiency is lower; 4) easily built on stilts, layering and fold of joint skirt corner fiber, adopts at present the conservative design mode that strengthens safety coefficient to guarantee that this is in and under service load, do not produce breakage, but this mode has further reduced the structure efficiency of compound skirt etc.
Summary of the invention
Object of the present invention is exactly forming method, mould and the rubber inner core mould thereof that a kind of composite joint skirt will be provided, the composite joint skirt mechanical property excellence making with this forming method and mould thereof, fiber volume fraction is high, and moulding process is simple, easy and simple to handle simultaneously.
For achieving the above object, the technical solution used in the present invention is: a kind of composite joint skirt forming method, comprises the following steps:
1) be made into mould: make external mold, internal mold, and rubber inner core mould, the profile of described rubber inner core mould coordinates with the interior shape of composite joint skirt, the interior shape of described external mold coordinates with the profile of composite joint skirt, and the profile of described internal mold coordinates with the interior shape of described rubber inner core mould; Then even smearing release agent on described internal mold outer wall, is loaded on described internal mold outer wall by described rubber inner core die sleeve;
2) laying: fibre reinforced materials is cut into different size and angle and is coated with and spread after setting agent, it is successively spread and is overlying on described rubber inner core mould, paving is covered to compacting after certain thickness, until corrugationless obtains preform;
3) mould preheating and vacuumizing: described external mold and internal mold are carried out to matched moulds assembling, then mould heated and vacuumize processing;
4) resin pretreatment: vacuumize after resin agitating is even;
5) injecting glue and curing: will carry out moulding in pretreated resin injection die cavity; After injecting glue, resin is heated up and solidify, rubber inner core mould, along with temperature raises and expands, evenly pressurizes to preform, thereby makes resin fully infiltrate preform;
6) demoulding and pruning: after the demoulding, formed body is carried out to overlap pruning, obtain composite joint skirt.
Further, in described step 1), the forming method of described rubber inner core mould comprises the following steps:
A, preparation rubber glue: by rubber latex: the mass ratio preparation rubber glue of vulcanizing agent=90～99%:1～10%, rubber liquid cement agitation is evacuated to-10～-20Kpa after evenly, pressurize 30～60min, stand-by compared with taking out after gross blow hole to no longer occurring;
B, rubber inner core mold forming: rubber glue is injected to rubber inner core mould and carry out moulding;
C, sulfuration and the demoulding: by room temperature natural vulcanization 22～26h of rubber glue, be then warming up to 95～100 ℃ of insulation 1.0～1.5h, be finally warming up to 195～205 ℃ of insulation 1.0～1.5h; Be cooled to the demoulding after room temperature, obtain rubber inner core mould.
Further, described step 2) in, laying angle is 0 °, ± 15 °, and ± 30 °, ± 45 °, ± 60 ° and 90 °.
Further, in described step 5), resin injection temperature is 20～150 ℃, and injection pressure is 0.1～0.8MPa.
Further, in described step 5), resin solidification condition is: 100～150 ℃ of insulation 1～4h, be then warming up to 180～200 ℃ of insulation 1～4h, and be finally warming up to 210～250 ℃ of insulation 2～10h.
Further, in described step 1), the moulding material of described rubber inner core mould is R10301 silicon rubber; Described releasing agent is silicone grease or PMR-70.
Further, described step 2) in, described fibre reinforced materials is glass fabric or carbon cloth.
Further, in described step 4), described resin is bismaleimide resin or epoxy resin.
A kind of composite joint skirt mould designing for realizing said method, comprise internal mold and external mold, on described internal mold outer wall, coaxial laminating is set with rubber inner core mould, described external mold coaxial package is in the periphery of described rubber inner core mould, described internal mold top is connected with pressing plate, the end face of described pressing plate is connected with the top of described external mold, the bottom of described internal mold is connected with deflector, the bottom of deflector is connected with cover plate, the periphery of described cover plate is along being connected with the bottom of described external mold, described rubber inner core mould and described external mold, internal mold, pressing plate, and deflector surrounds joint skirt shaping mold cavity, on described cover plate, have the gum-injecting port being communicated with described die cavity, described outer mold top has the gum outlet being communicated with described die cavity.
A kind of for realizing the rubber inner core mould of the composite joint skirt moulding that said method designs, comprise moulding internal mold, the periphery coaxial sleeve of described moulding internal mold is equipped with the first external mold, outer, described moulding internal mold top is connected with the second external mold, described internal mold, the first external mold, and the second external mold surrounds rubber inner core mold forming die cavity, described the second external mold is provided with discharge port.
Compared with prior art, tool of the present invention has the following advantages:
One, the present invention adopts silicon rubber assisted RTM technique to carry out the moulding of composite joint skirt, owing to adopting double-sided die manufacture, make product there is dimensionally stable, quality conformance is good, and the advantages such as fiber and resin content are controlled, solve the wayward problem of frictioning degree that manual frictioning causes, also avoided that joint skirt corner fiber is built on stilts, the phenomenon of layering and fold; Adopt the means such as co-curing and expandable rubber core to reduce product porosity simultaneously, improved fiber volume fraction and the mechanical property of product.
Its two, this forming method integrated molding, the apparent color and luster homogeneous of goods, inner bonding good, precision is high, adds without fibrage is carried out to machine, avoids machine to add the damage to fiber; And can moulding with the composite joint skirt of reinforcing rib structure, improved product structure efficiency.
They are three years old, mould adopts rubber pattern as inner core die, in solidification process, along with temperature raises, rubber inner core mould expands, and in whole process, preform is evenly pressurizeed, make resin fully infiltrate preform, guarantee that goods internal resin is uniformly distributed, improved the fiber volume fraction of product, greatly improved the mechanical property of material simultaneously.
Accompanying drawing explanation
Fig. 1 is a kind of cross-sectional view of composite joint skirt mould.
Fig. 2 is a kind of cross-sectional view of rubber inner core mould.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, be convenient to more clearly understand the present invention, but they do not form restriction to the present invention.
A kind of composite joint skirt mould for using in following examples shown in Fig. 1, comprise internal mold 1 and external mold 2, on internal mold 1 outer wall, coaxial laminating is set with rubber inner core mould 3, external mold 2 coaxial packages are in the periphery of rubber inner core mould 3, internal mold 1 top is connected with pressing plate 4, the end face of pressing plate 4 is connected with the top of external mold 2, the bottom of internal mold 1 is connected with deflector 5, the bottom of deflector 5 is connected with cover plate 6, the periphery of cover plate 6 is along being connected with the bottom of external mold 2, rubber inner core mould 3 and external mold 2, internal mold 1, pressing plate 4, and deflector 5 surrounds joint skirt shaping mold cavity 7, on cover plate 6, have the gum-injecting port 8 being communicated with die cavity 7, external mold 2 tops have the gum outlet 9 being communicated with die cavity 7, between internal mold 1 end face and pressing plate 4 bottom surfaces, have the seal groove 10 for sealing strip is installed, between deflector 5 and cover plate 6, between deflector 5 and internal mold 1 bottom surface, also have seal groove.
A kind of rubber inner core mould for using in following examples shown in Fig. 2, comprise moulding internal mold 14, the periphery coaxial sleeve of moulding internal mold 14 is equipped with the first external mold 15, moulding internal mold 14 outers, top are connected with the second external mold 16, internal mold 14, the first external mold 15, and the second external mold 16 surrounds rubber inner core mold forming die cavity 17, the second external molds 16 and is provided with discharge port 18.
Embodiment 1
Motor body prepared by the present embodiment by the size of composite joint skirt and performance parameter as following table 1:
Table 1
| Sequence number | Project | Unit | Index |
| 1 | Flange internal diameter | mm | φ400.0 |
| 2 | End face wall thickness | mm | 6.0 |
| 3 | Skirt height | mm | 100.0 |
| 4 | Cylinder section wall thickness | mm | 3.0 |
| 5 | Axial compression | kN | ≥500.0 |
| 6 | Fiber volume fraction | % | ≥60 |
The forming method of this composite joint skirt comprises the following steps:
1) be made into mould: make external mold, internal mold, and rubber inner core mould, the profile of described rubber inner core mould coordinates with the interior shape of composite joint skirt, the interior shape of described external mold coordinates with the profile of composite joint skirt, and the profile of described internal mold coordinates with the interior shape of described rubber inner core mould; Then on described internal mold outer wall, evenly smear one deck releasing agent, releasing agent is silicone grease or PMR-70, and described rubber inner core die sleeve is loaded on to described internal mold outer wall;
Wherein, adopt the process of rubber inner core mould moulding rubber inner core mould as follows:
A, preparation rubber glue: adopt R10301 rubber, according to rubber latex: vulcanizing agent=90～99%:1～10%, the preferably mass ratio of 90%:10% preparation 5kg rubber glue, stir, at ambient temperature rubber glue is put into vacuum tank, being evacuated to vacuum is-10～-20Kpa, preferably-10Kpa, pressurize 30～60min, preferably 30min, stand-by compared with taking out after gross blow hole to no longer occurring;
B, rubber inner core mold forming: after the removing surface of moulding internal mold is clean, evenly smear silicone grease, then assemble with the first external mold and the second external mold respectively, rubber glue is injected to rubber inner core mould from discharge port and carry out moulding;
C, sulfuration and the demoulding: injecting glue is complete, by room temperature natural vulcanization 22～26h of rubber glue, preferably 24h; Then be warming up to 95～100 ℃, preferably 100 ℃, insulation 1.0～1.5h, preferably 1.0h; Finally be warming up to 195～205 ℃, preferably 200 ℃, insulation 1.0～1.5h, preferably 1h; Naturally cool to the demoulding after room temperature, obtain rubber inner core mould;
2) preform laying: 40 blocks of carbon cloths of cutting or glass fabric are coated with to be spread after setting agent according to (0 °)
2/ (± 15 °, ± 30 °, ± 45 °, ± 60 °)
9/ 90 °
2order, successively paving is overlying on (0 ° of direction gage of fiber laying is decided to be internal mold hoop) on rubber inner core mould from the inside to the outside, paving is covered to end face wall thickness 6.0mm, cylinder section wall thickness 3.0mm, unnecessary fiber cloth prunes away, after adopting vacuum bag to be coated, vacuumize compacting, until all fibers are compacted, corrugationless, obtain preform;
3) mould preheating and vacuumizing: described external mold 2 is carried out to matched moulds assembling with internal mold 1, that is: first in internal mold 1 seal groove 10, load onto sealing strip, then successively by pressing plate 4 and internal mold 1 by the first screw 11 carry out fastening, by external mold 2 and pressing plate 4 by the second screw 12 carry out fastening, deflector 5 and internal mold 1 are carried out fastening, finally cover plate 6 and external mold 2 are undertaken fastening by the 3rd screw 13; Then mould is heated to 130 ℃, and vacuumizes processing;
4) resin pretreatment: bismaleimide resin, at 20～150 ℃, is vacuumized after preferably stirring at 130 ℃;
5) injecting glue and solidify: by pretreated bismaleimide resin at 0.1～0.8MPa, preferably under 0.5MPa pressure, from two gum-injecting ports, inject die cavity simultaneously and carry out moulding, after injecting glue, resin is cured according to following curing cycle: 100～150 ℃, preferably 150 ℃, insulation 1～4h, preferably 4h; Then be warming up to 180～200 ℃, preferably 180 ℃, insulation 1～4h, preferably 2h; Finally be warming up to 210～250 ℃, preferably 220 ℃, insulation 2～10h, preferably 6h, rubber inner core mould, along with temperature raises and expands, evenly pressurizes to preform, thereby makes resin fully infiltrate preform;
6) demoulding and pruning: composite joint skirt product is carried out to overlap pruning, obtain composite joint skirt finished product.
After testing, the performance indications of the composite joint skirt of above-mentioned moulding are as following table 2:
Table 2
| Sequence number | Project | Unit | Result |
| 1 | Axial compression | kN | 620.7 |
| 2 | Fiber volume fraction | % | 65.0 |
From table 2 data, the composite joint skirt mechanical property making is good, and fiber volume fraction is large.
Embodiment 2
Motor body prepared by the present embodiment by the size of composite joint skirt and performance parameter as following table 3:
Table 3
| Sequence number | Project | Unit | Index |
| 1 | Flange internal diameter | mm | φ1200 |
| 2 | End face wall thickness | mm | 12.0 |
| 3 | Skirt height | mm | 250.0 |
| 4 | Cylinder section wall thickness | mm | 8.0 |
| 5 | Axial compression | kN | ≥1000.0 |
| 6 | Fiber volume fraction | % | ≥60 |
The forming method of this composite joint skirt comprises the following steps:
1) be made into mould: make external mold, internal mold, and rubber inner core mould, the profile of described rubber inner core mould coordinates with the interior shape of composite joint skirt, the interior shape of described external mold coordinates with the profile of composite joint skirt, and the profile of described internal mold coordinates with the interior shape of described rubber inner core mould; Then on described internal mold outer wall, evenly smear one deck releasing agent, described rubber inner core die sleeve is loaded on to described internal mold outer wall;
Wherein, adopt the process of rubber inner core mould moulding rubber inner core mould as follows:
A, preparation rubber glue: adopt R10301 rubber, according to the mass ratio preparation 5kg rubber glue of rubber latex: vulcanizing agent=95%:5%, stir, at ambient temperature rubber glue is put into vacuum tank, being evacuated to vacuum is-20Kpa, pressurize 45min, stand-by compared with taking out after gross blow hole to no longer occurring;
B, rubber inner core mold forming: after 14 removing surfaces of moulding internal mold are clean, evenly smear silicone grease, then assemble with the first external mold 15 and the second external mold 16 respectively, rubber glue is injected to rubber inner core mould from discharge port 18 and carry out moulding;
C, sulfuration and the demoulding: injecting glue is complete, by room temperature natural vulcanization 24h of rubber glue, be then warming up to 100 ℃ of insulation 1.0h, is finally warming up to 200 ℃ of insulation 1h; Naturally cool to the demoulding after room temperature, obtain rubber inner core mould;
2) preform laying: 80 blocks of carbon cloths of cutting, are coated with and spread after setting agent according to (0 °)
4/ (± 15 °, ± 30 °, ± 45 °, ± 60 °)
18/ 90 °
4order, successively paving is overlying on (0 ° of direction gage of fiber laying is decided to be internal mold hoop) on rubber inner core mould from the inside to the outside, paving is covered to end face wall thickness 12.0mm, cylinder section wall thickness 8.0mm, unnecessary fiber cloth prunes away, after adopting vacuum bag to be coated, vacuumize compacting, until all fibers are compacted, corrugationless, obtain preform;
3) mould vacuumizes: described external mold and internal mold are carried out to matched moulds assembling, that is: first in internal mold seal groove, load onto sealing strip, then successively by pressing plate and internal mold by screw 2 carry out fastening, by external mold and pressing plate by screw 1 carry out fastening, deflector and internal mold are carried out fastening, finally cover plate and external mold are undertaken fastening by screw 3; Then mould is vacuumized to processing;
4) resin pretreatment: vacuumize after epoxy resin is at room temperature stirred;
5) injecting glue and curing: pretreated epoxy resin is injected to die cavity under 0.3MPa pressure from two gum-injecting ports simultaneously and carry out moulding, after injecting glue, resin is cured according to following curing cycle: 80 ℃ of insulation 4h, then be warming up to 100 ℃ of insulation 4h, finally be warming up to 120 ℃ of insulation 6h, rubber inner core mould, along with temperature raises and expands, evenly pressurizes to preform, thereby makes resin fully infiltrate preform;
6) demoulding and pruning: composite joint skirt product is carried out to overlap pruning, obtain composite joint skirt finished product.
After testing, the performance indications of the composite joint skirt of above-mentioned moulding are as following table 4:
Table 4
| Sequence number | Project | Unit | Result |
| 1 | Axial compression | kN | 1427.0 |
| 2 | Fiber volume fraction | % | 72.1 |
From table 4 data, the composite joint skirt mechanical property making is good, and fiber volume fraction is large.
Claims (10)
1. a composite joint skirt forming method, comprises the following steps:
1) be made into mould: make external mold, internal mold, and rubber inner core mould, the profile of described rubber inner core mould coordinates with the interior shape of composite joint skirt, the interior shape of described external mold coordinates with the profile of composite joint skirt, and the profile of described internal mold coordinates with the interior shape of described rubber inner core mould; Then even smearing release agent on described internal mold outer wall, is loaded on described internal mold outer wall by described rubber inner core die sleeve;
2) laying: fibre reinforced materials is cut into different size and angle and is coated with and spread after setting agent, it is successively spread and is overlying on described rubber inner core mould, paving is covered to compacting after certain thickness, until corrugationless obtains preform;
3) mould preheating and vacuumizing: described external mold and internal mold are carried out to matched moulds assembling, then mould heated and vacuumize processing;
4) resin pretreatment: vacuumize after resin agitating is even;
5) injecting glue and curing: will carry out moulding in pretreated resin injection die cavity; After injecting glue, resin is heated up and solidify, rubber inner core mould, along with temperature raises and expands, evenly pressurizes to preform, thereby makes resin fully infiltrate preform;
6) demoulding and pruning: after the demoulding, formed body is carried out to overlap pruning, obtain composite joint skirt.
2. composite joint skirt forming method according to claim 1, is characterized in that: in described step 1), the forming method of described rubber inner core mould comprises the following steps:
A, preparation rubber glue: by rubber latex: the mass ratio preparation rubber glue of vulcanizing agent=90～99%:1～10%, rubber liquid cement agitation is evacuated to-10～-20Kpa after evenly, pressurize 30～60min, stand-by compared with taking out after gross blow hole to no longer occurring;
B, rubber inner core mold forming: rubber glue is injected to rubber inner core mould and carry out moulding;
C, sulfuration and the demoulding: by room temperature natural vulcanization 22～26h of rubber glue, be then warming up to 95～100 ℃ of insulation 1.0～1.5h, be finally warming up to 195～205 ℃ of insulation 1.0～1.5h; Be cooled to the demoulding after room temperature, obtain rubber inner core mould.
3. composite joint skirt forming method according to claim 1 and 2, is characterized in that: described step 2) in, laying angle is 0 °, ± 15 °, and ± 30 °, ± 45 °, ± 60 ° and 90 °.
4. composite joint skirt forming method according to claim 1 and 2, is characterized in that: in described step 5), resin injection temperature is 20～150 ℃, and injection pressure is 0.1～0.8MPa.
5. composite joint skirt forming method according to claim 1 and 2, it is characterized in that: in described step 5), resin solidification condition is: 100～150 ℃ of insulation 1～4h, be then warming up to 180～200 ℃ of insulation 1～4h, and be finally warming up to 210～250 ℃ of insulation 2～10h.
6. composite joint skirt forming method according to claim 1 and 2, is characterized in that: in described step 1), the moulding material of described rubber inner core mould is R10301 silicon rubber; Described releasing agent is silicone grease or PMR-70.
7. composite joint skirt forming method according to claim 1 and 2, is characterized in that: described step 2) in, described fibre reinforced materials is glass fabric or carbon cloth.
8. composite joint skirt forming method according to claim 1 and 2, is characterized in that: in described step 4), described resin is bismaleimide resin or epoxy resin.
9. one kind for realizing the composite joint skirt mould that method designs described in claim 1, comprise internal mold (1) and external mold (2), it is characterized in that: on described internal mold (1) outer wall, coaxial laminating is set with rubber inner core mould (3), described external mold (2) coaxial package is in the periphery of described rubber inner core mould (3), described internal mold (1) top is connected with pressing plate (4), the end face of described pressing plate (4) is connected with the top of described external mold (2), the bottom of described internal mold (1) is connected with deflector (5), the bottom of described deflector (5) is connected with cover plate (6), the periphery of described cover plate (6) is along being connected with the bottom of described external mold (2), described rubber inner core mould (3) and described external mold (2), internal mold (1), pressing plate (4), and deflector (5) surrounds joint skirt shaping mold cavity (7), on described cover plate (6), have the gum-injecting port (8) being communicated with described die cavity (7), described external mold (2) top has the gum outlet (9) being communicated with described die cavity (7).
10. one kind for realizing the rubber inner core mould of the composite joint skirt moulding that method designs described in claim 1, it is characterized in that: comprise moulding internal mold (14), the periphery coaxial sleeve of described moulding internal mold (14) is equipped with the first external mold (15), described moulding internal mold (14) outer, top is connected with the second external mold (16), described internal mold (14), the first external mold (15), and second external mold (16) surround rubber inner core mold forming die cavity (17), described the second external mold is provided with discharge port (18).
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| CN104476759A (en) * | 2014-10-27 | 2015-04-01 | 大连理工大学 | Thermoforming technology of composite prepreg irregular-shaped folded core material |
| CN105150438A (en) * | 2015-08-19 | 2015-12-16 | 湖北三江航天江北机械工程有限公司 | Winding solidification device for carbon fiber composite thin-wall skirt part |
| CN105283016A (en) * | 2015-11-30 | 2016-01-27 | 中国电子科技集团公司第四十三研究所 | Vacuum encapsulation device for high-power high-packaging-density electronic products, and encapsulation method thereof |
| CN105365226A (en) * | 2015-12-16 | 2016-03-02 | 青岛林达科技开发有限公司 | Soft mold and closed mold fiber reinforced composite product processing device and method |
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