CN103921451B - A kind of ceramic base pyramid dot matrix structural composite material is prepared mould - Google Patents
A kind of ceramic base pyramid dot matrix structural composite material is prepared mould Download PDFInfo
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- CN103921451B CN103921451B CN201410150533.8A CN201410150533A CN103921451B CN 103921451 B CN103921451 B CN 103921451B CN 201410150533 A CN201410150533 A CN 201410150533A CN 103921451 B CN103921451 B CN 103921451B
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- hole
- hollow out
- dot matrix
- ceramic base
- composite material
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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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Abstract
A kind of ceramic base pyramid dot matrix structural composite material is prepared mould, it relates to one and prepares mould, the ceramic base pyramid dot matrix structural composite material panel that is difficult to one-shot forming, preparation the to solve existing ceramic base pyramid dot matrix structural composite material not more difficult problem of the direct sum demoulding of out-of-flatness, broach of subsiding, it comprises hollow out framework, two trapezoidal cuttings, two pressing plates, two side plates and multiple triangle cutting; It is the first trapezoidal through hole that the two ends of hollow out framework are processed with respectively a cross section along the width of horizontal arm, in the first through hole, be fitted with the trapezoidal cutting matching with the first through hole, in the second through hole, be fitted with the triangle cutting matching with the second through hole, the outside of two parallel armstands of hollow out framework is separately installed with the side plate that can cover the first through hole and the second through hole, and pressing plate is embedded in respectively in the upper Baltimore groove and concave groove of hollow out framework. The present invention is for CfThe preparation of/SiC ceramic base pyramid dot matrix structural composite material.
Description
Technical field
The present invention relates to one and prepare mould, be specifically related to the mould of preparing of ceramic base pyramid dot matrix structural composite material, belong toCeramic base pyramid dot matrix composite preparation field.
Background technology
Cf/ SiC ceramic base pyramid dot matrix structural composite material has high strength, low creep properties, rub resistance wearing and tearing, corrosion resistance andGood non-oxidizability, and there is excellent mechanical performance, lower thermal coefficient of expansion and the higher coefficient of heat conduction. Based onAbove-mentioned advantage, Cf/ SiC ceramic base pyramid dot matrix structural member has in the harsh operating modes such as high temperature, strong acid, highly basic, shock resistanceApplication prospect widely. But lattice structure composite is difficult to be shaped, and preparation difficulty is higher, is embodied as: sewing tech bandThe concave-convex sense of covering the end of a thread coming is poor, makes panel out-of-flatness, and the problems such as panel and the moulding integrated difficulty of fuse therefore need to be forThe specific requirement of lattice material configuration, a kind of auxiliary C of designfThe mould of/SiC ceramic base pyramid dot matrix structural composite material moulding.
In addition, due to CfIn/SiC ceramic base pyramid dot matrix structural composite material, carbon fiber has good pliability, causes compilingThe dimensional stability of knitting body is very poor, thereby causes knitted body distortion, so that the skewness of carbon fiber in composite, phaseShould occur the inequality of composite structure and performance in ground, this is for the sign of composite property, and preparation high reliabilityMember is all very disadvantageous.
Summary of the invention
The present invention is the ceramic fund that is difficult to one-shot forming, preparation for solving existing ceramic base pyramid dot matrix structural composite materialThe word tower lattice structure composite material face not more difficult problem of the direct sum demoulding of out-of-flatness, broach of subsiding, and then a kind of pottery is providedPorcelain base pyramid lattice structure composite is prepared mould.
The present invention addresses the above problem the technical scheme of taking to be: a kind of ceramic base pyramid dot matrix structure composite of the present inventionMaterial is prepared mould and is comprised hollow out framework, two trapezoidal cuttings, two pressing plates, two side plates and multiple triangle cutting;
The cross section of described hollow out framework is type, and the two ends of hollow out framework are processed with respectively a cross section along the width of horizontal armFor the first trapezoidal through hole, on the hollow out framework between two the first through holes, be processed with multiple along the width of horizontal armCross section is leg-of-mutton the second through hole, is fitted with the trapezoidal cutting matching with the first through hole, in the second through hole in the first through holeBe fitted with the triangle cutting matching with the second through hole, the outside of two parallel armstands of hollow out framework is separately installed with and can coversClose the side plate of the first through hole and the second through hole, pressing plate is embedded in respectively in the upper Baltimore groove and concave groove of hollow out framework.
The invention has the beneficial effects as follows: utilize mould of the present invention can use easily sewing tech to carry out ceramic base pyramid dot matrixThe preparation of structural composite material, has met the integrated requirement of ceramic base pyramid dot matrix structural composite material, without secondaryBonding connection, for the preparation of material brings great convenience. The present invention is applied to ceramic base pyramid dot matrix structure compositeThe preparation of material. Serviceability temperature environment is 120 DEG C～150 DEG C, and pressure is 2Mpa, the pottery that utilizes mould of the present invention to prepareBase pyramid lattice structure composite coremaking sub bar is straight, and upper and lower panel does not have the concave-convex sense that sewing tech stays and can not collapseFall into. Strict control has been carried out in the path of the broach of the surface of triangle cutting and trapezoidal cutting to test specimen, has guaranteed test specimen coreThe path of sub bar is accurate, is close to cutting surface and can ensures that broach is straight while making pyramid dot matrix composite; Due to threeThe pretightning force that the brute force support of angle cutting, trapezoidal cutting and the pressing of pressing plate produce, makes the pyramid dot matrix composite of preparingPanel surface is smooth, has removed the circuit concave-convex sense that sewing tech stays. What the present invention adopted is that quality carbon steel is made, elasticityModulus is 210Gpa, has higher rigidity, can not be out of shape at higher temperature and pressure bed die, can not make panel subsideBe out of shape, ensured the mechanical performance of material, can prepare the C of even structure, stable performancef/ SiC ceramic base pyramid pointBattle array structural composite material, gives CfThe preparation of/SiC ceramic base pyramid dot matrix structural composite material provides very big convenience. UtilizeMould of the present invention also can accurately be controlled ceramic base pyramid dot matrix structural composite material panel size, the broach angle of preparation.The inner groovy width of hollow out framework is consistent with the panel width of preparing test specimen, solved asking that panel that sewing tech brings movesThe size of inscribing and strictly controlled panel, can be accurate to millimeter, has ensured upper and lower panel uniformity and the structure of preparing test specimenStability; Triangle cutting drift angle angle and trapezoidal cutting base angle angle have ensured the angle of making of broach, can be at 5 ° to 175 °Between arbitrarily regulate. Utilize mould of the present invention can also change ceramic base pyramid dot matrix structural composite material panel thickness andThe diameter of broach, plate thickness is controlled in the hollow out framework inner groovy power wall degree of depth, and broach diameter control is at triangleCutting each other hollow out gap identity distance from. Utilize mould of the present invention, when the demoulding, only need unload lower side panel, take out triangleCutting and trapezoidal cutting, mould is reusable without consume. On triangle cutting, trapezoidal cutting and pressing plate, spread trueAfter empty insulation silicone grease, mould just can not be bonded on ceramic base pyramid dot matrix structural composite material and more easily be separated with it.The present invention is simple in structure, and reliability is strong, simple to operate, has very strong practicality.
Brief description of the drawings
Fig. 1 is the overall structure front view of mould of the present invention, and Fig. 2 is the top view of Fig. 1, and Fig. 3 is the side view of Fig. 1,Fig. 4 is hollow out framework front view, and Fig. 5 is the top view of Fig. 4, and Fig. 6 is the side view of Fig. 4, and Fig. 7 is that the master of side plate looksFigure, Fig. 8 is the top view of Fig. 7, and Fig. 9 is the side view of Fig. 7, and Figure 10 is the top view of triangle cutting, and Figure 11 is threeThe side view of angle cutting, Figure 12 is the front view of triangle cutting, and Figure 13 is the top view of trapezoidal cutting, and Figure 14 is trapezoidal insertingThe side view of bar, Figure 15 is the front view of trapezoidal cutting, and Figure 16 is the perspective view of hollow out framework, and Figure 17 is profitThe cabling mode structural representation of making broach with mould preparation of the present invention, Figure 18 utilizes mould of the present invention to prepareCf/ SiC ceramic base lattice structure composite structure schematic diagram.
Detailed description of the invention
Detailed description of the invention one: in conjunction with Fig. 1-Figure 16 explanation, a kind of ceramic base pyramid dot matrix structure composite of present embodimentMaterial is prepared mould and is comprised the trapezoidal cutting of hollow out framework 1, two 2, two pressing plates 4, two side plates 5 and multiple triangle cuttings3；
The cross section of described hollow out framework 1 is H type, and the two ends of hollow out framework 1 process respectively along the width of horizontal arm 1-6Having a cross section is the first trapezoidal through hole 1-1, on the hollow out framework 1 between two the first through hole 1-1 along horizontal arm 1-6Width to be processed with multiple cross sections be leg-of-mutton the second through hole 1-2, in the first through hole 1-1, be fitted with and the first through hole 1-1In trapezoidal cutting 2, the second through hole 1-2 that match, be fitted with the triangle cutting 3 matching with the second through hole 1-2, hollow out frameThe outside of two parallel armstand 1-5 of frame 1 is separately installed with the side plate 5 that can cover the first through hole 1-1 and the second through hole 1-2,Pressing plate 4 is embedded in respectively in the upper Baltimore groove 1-3 and concave groove 1-4 of hollow out framework 1.
Detailed description of the invention two: in conjunction with Fig. 4 and Figure 16 explanation, described in present embodiment the upper base of the first through hole 1-1 and underBase is all parallel with the upper surface of the armstand 1-5 of hollow out framework 1, and two the first through hole 1-1 are respectively with the center of hollow out framework 1Line is that symmetry axis is symmetrical arranged. So arrange, be convenient to the C that is shapedf/ SiC ceramic base pyramid dot matrix structural material, meets designRequirement. Other is identical with detailed description of the invention one.
Detailed description of the invention three: in conjunction with Fig. 4 and Figure 16 explanation, the cross section of the second through hole 1-2 is isosceles described in present embodimentTriangle, the adjacent both sides of two adjacent the second through hole 1-2 are parallel, and the spacing on parallel adjacent both sides equates. So arrange,Ensure the C obtainingfMechanical performance, even structure and the stable performance of/SiC ceramic base pyramid dot matrix structural composite material.Other is identical with detailed description of the invention two.
Detailed description of the invention four: in conjunction with Fig. 4 and Figure 16 explanation, the first through hole 1-1 of present embodiment and the second through hole 1-2Height equate, the hypotenuse of the first through hole 1-1 is parallel with the hypotenuse of adjacent the second through hole 1-2. So arrange, ensure terribleThe C arrivingfMechanical performance, even structure and the stable performance of/SiC ceramic base pyramid dot matrix structural composite material. Other and toolBody embodiment one, two or three is identical.
Detailed description of the invention five: in conjunction with Fig. 4 and Figure 16 explanation, the first through hole 1-1 of present embodiment and the second through hole 1-2Be arranged in the middle part of the armstand 1-5 of hollow out framework 1. So arrange, ensured the C obtainingf/ SiC ceramic base pyramid dot matrixThe mechanical performance of structural composite material, even structure and stable performance. Other is identical with detailed description of the invention four.
Detailed description of the invention six: in conjunction with Fig. 1 and Fig. 2 explanation, length and the hollow out frame of trapezoidal cutting 2 described in present embodimentThe width of frame 1 is equal, and the length of described triangle cutting 3 equates with the width of hollow out framework 1. So arrange, ensured ladderWhen shape cutting and triangle cutting two are all inserted into the through hole of hollow out framework and hollow out framework outer surface maintain an equal level, prepareCf/ SiC ceramic base pyramid dot matrix structural composite material even structure and stable performance. Other and detailed description of the invention one, two,Three or five is identical.
Detailed description of the invention seven: in conjunction with Fig. 1 and Fig. 4 explanation, trapezoidal cutting 2 and the first through hole 1-1 described in present embodimentFor matched in clearance, the spacing of trapezoidal cutting 2 and the first through hole 1-1 is 0.5mm; Between triangle cutting 3 and the second through hole 1-2 beGap coordinates, and the spacing of triangle cutting 3 and the second through hole 1-2 is 0.5mm. So arrange, be beneficial to trapezoidal cutting and triangle and insertBar is movable back and forth in respective through hole separately, facilitates the dismounting of trapezoidal cutting and triangle cutting. Other and detailed description of the invention one,Two, three or five is identical.
Detailed description of the invention eight: in conjunction with Fig. 1 and Fig. 4 explanation, the thickness of the pressing plate 4 of present embodiment is hollow out framework 11.5 times of upper Baltimore groove 1-3 or concave groove 1-4 height. So arrange, be used for doing heat pressing process and prepare lattice composite materialPressure-bearing body. Other is identical with detailed description of the invention seven.
Detailed description of the invention nine: in conjunction with Fig. 3 explanation, the height of the side plate 5 of present embodiment and the armstand 1-5 of hollow out framework 1Height equate. So arrange, can prevent trapezoidal cutting and triangle cutting transverse shifting. Other and detailed description of the invention eight phasesWith.
Detailed description of the invention ten: in conjunction with Fig. 2 explanation, mould also comprises multiple screws 6 described in present embodiment, and side plate 5 passes throughMultiple screws 6 removably connect with hollow out framework 1. So arrange, easy to connect reliable. Other and detailed description of the invention nineIdentical.
The course of work
1, all trapezoidal cuttings 2 and the outer surface of triangle cutting 3 are spread to one deck silicone grease (conveniently stripped), insert trapezoidalBar and triangle cutting are injected in first through hole and the second via-hole array of hollow out framework 1, and side plate is arranged on to two of hollow out frameworkSide, uses fixed screw pretension.
2, by the carbon cloth except after glue carbonization treatment through vacuum impregnation, be solidified into after panel, be cut into design size sizeAnd panel is punched by the size of design, the array in hole is just coincide with the space of mould top view.
3, by the carbon fiber wire of vacuum impregnation by walking sewer (cabling is suitable being placed on panel on mould shown in Figure 17Order is A-B-C-D-E-F-G, has now walked two circulations, and G line is later according to D-E-F-G cabling in turn), obtain C/SiCThe broach part of ceramic base lattice structure composite.
4, by except after the fiber cloth vacuum impregnation of glue carbonization, be cut into panel size, dry stand-by.
5, the panel surface that the fiber cloth of preparation in step 4 is covered to step 3, covers the end of a thread of making.
6, pressing plate 4 and upper Baltimore groove and the concave groove contact-making surface of hollow out framework 1 are spread to silicone grease, be pressed in lattice structure partSurface, coincide with Baltimore groove on hollow out framework and concave groove.
7, by putting into autoclave with the mold integral of C/SiC ceramic base lattice structure material in step 6, carry out vacuum bagEncapsulation, vacuumizes and carries out hot-press solidifying moulding, after taking-up, unloads lower platen and side plate, trapezoidal cutting and triangle cutting are pounded out,Just can obtain constitutionally stable high-quality Cf/ SiC ceramic base lattice structure composite.
Figure 18 shows that the C that utilizes mould of the present invention to preparef/ SiC ceramic base lattice structure composite structure schematic diagram.The C preparing as can be seen from FigurefThe upper and lower panel of/SiC ceramic base lattice structure composite is unanimously smooth, no concave-convex sense,Broach is straight, Stability Analysis of Structures.
Claims (10)
1. ceramic base pyramid dot matrix structural composite material is prepared a mould, it is characterized in that, it comprise hollow out framework (1),Two trapezoidal cuttings (2), two pressing plates (4), two side plates (5) and multiple triangle cutting (3);
The cross section of described hollow out framework (1) is H type, and the two ends of hollow out framework (1) are divided along the width of horizontal arm (1-6)Not being processed with a cross section is trapezoidal the first through hole (1-1), is positioned at the hollow out framework (1) between two the first through holes (1-1)It is leg-of-mutton the second through hole (1-2) that the upper width along horizontal arm (1-6) is processed with multiple cross sections, the first through hole (1-1)Inside be fitted with the trapezoidal cutting (2) matching with the first through hole (1-1), in the second through hole (1-2), be fitted with and the second through hole(1-2) the triangle cutting (3) matching, the outside of parallel two armstands (1-5) of hollow out framework (1) is separately installed withThe side plate (5) that can cover the first through hole (1-1) and the second through hole (1-2), pressing plate (4) is embedded in respectively hollow out framework (1)Upper Baltimore groove (1-3) and concave groove (1-4) in.
2. a kind of ceramic base pyramid dot matrix structural composite material according to claim 1 is prepared mould, it is characterized in that:The upper base of described the first through hole (1-1) and bottom are all parallel with the upper surface of the armstand (1-5) of hollow out framework (1), and twoIndividual the first through hole (1-1) is symmetrical arranged taking the center line of hollow out framework (1) as symmetry axis respectively.
3. a kind of ceramic base pyramid dot matrix structural composite material according to claim 2 is prepared mould, it is characterized in that:The cross section of described the second through hole (1-2) is isosceles triangle, and the adjacent both sides of adjacent two the second through holes (1-2) are parallel,The spacing on parallel adjacent both sides equates.
4. prepare mould, its spy according to a kind of ceramic base pyramid dot matrix structural composite material described in claim 1,2 or 3Levy and be: the height of the first through hole (1-1) and the second through hole (1-2) equates, the hypotenuse of the first through hole (1-1) and adjacentThe hypotenuse of the second through hole (1-2) is parallel.
5. a kind of ceramic base pyramid dot matrix structural composite material according to claim 4 is prepared mould, it is characterized in that:The first through hole (1-1) and the second through hole (1-2) are arranged in the middle part of the armstand (1-5) of hollow out framework (1).
6. prepare mould according to a kind of ceramic base pyramid dot matrix structural composite material described in claim 1,2,3 or 5, itsBe characterised in that: the length of described trapezoidal cutting (2) equates with the width of hollow out framework (1), the length of described triangle cutting (3)Degree equates with the width of hollow out framework (1).
7. prepare mould according to a kind of ceramic base pyramid dot matrix structural composite material described in claim 1,2,3 or 5, itsBe characterised in that: described trapezoidal cutting (2) is matched in clearance with the first through hole (1-1), trapezoidal cutting (2) and the first through hole (1-1)Spacing be 0.5mm; Triangle cutting (3) is matched in clearance with the second through hole (1-2), triangle cutting (3) and the second through hole(1-2) spacing is 0.5mm.
8. a kind of ceramic base pyramid dot matrix structural composite material according to claim 7 is prepared mould, it is characterized in that:The thickness of pressing plate (4) is the upper Baltimore groove (1-3) of hollow out framework (1) or concave groove (1-4) height 1.5 times.
9. a kind of ceramic base pyramid dot matrix structural composite material according to claim 8 is prepared mould, it is characterized in that:The height of side plate (5) equates with the height of the armstand (1-5) of hollow out framework (1).
10. a kind of ceramic base pyramid dot matrix structural composite material according to claim 9 is prepared mould, it is characterized in that:Described mould also comprises multiple screws (6), and side plate (5) removably connects by multiple screws (6) and hollow out framework (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150533.8A CN103921451B (en) | 2014-04-15 | 2014-04-15 | A kind of ceramic base pyramid dot matrix structural composite material is prepared mould |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410150533.8A CN103921451B (en) | 2014-04-15 | 2014-04-15 | A kind of ceramic base pyramid dot matrix structural composite material is prepared mould |
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| CN103921451A CN103921451A (en) | 2014-07-16 |
| CN103921451B true CN103921451B (en) | 2016-05-11 |
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| CN104723578B (en) * | 2015-03-26 | 2017-01-11 | 哈尔滨理工大学 | Preparation mould and method of ceramic-based corrugated wing air inlet leading-edge panel |
| CN104708837B (en) * | 2015-04-02 | 2017-04-12 | 哈尔滨工业大学 | Assembling mold for preparing folded sandwiched structure of composite material |
| CN105291310A (en) * | 2015-11-26 | 2016-02-03 | 哈尔滨理工大学 | Arc lattice structure preparation mold |
| CN105774054B (en) * | 2016-03-21 | 2018-01-16 | 哈尔滨理工大学 | Annular Rotating fields with dot matrix feature prepare mould |
| CN110204319B (en) * | 2019-04-22 | 2021-11-12 | 湖南远辉复合材料有限公司 | Integral preparation method of ceramic matrix composite lattice structure |
| CN110253722B (en) * | 2019-04-22 | 2021-08-20 | 湖南远辉复合材料有限公司 | Integral forming die for composite material lattice structure fiber prefabricated body |
| CN114956843A (en) * | 2022-05-25 | 2022-08-30 | 西安鑫垚陶瓷复合材料有限公司 | Preparation method of ceramic matrix composite material light lattice structure |
| CN116023161B (en) * | 2023-01-31 | 2023-07-11 | 北京理工大学 | Large-size high Jiang Taoci-matrix composite special-shaped lattice structure and preparation method thereof |
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| US6451235B1 (en) * | 2000-04-26 | 2002-09-17 | Thomas L. Owens | Forming a three dimensional fiber truss from a fiber slurry |
| CN100566970C (en) * | 2008-03-19 | 2009-12-09 | 哈尔滨工业大学 | The assembling die of preparation fibre reinforcement pyramid shape dot matrix sandwich board |
| CN101708638B (en) * | 2009-11-30 | 2012-07-25 | 哈尔滨工业大学 | Assembly jig for preparing fiber reinforced pyramid dot matrix sandwich panel core |
| CN102275305A (en) * | 2011-04-29 | 2011-12-14 | 哈尔滨工业大学 | Method and mold for manufacturing dot matrix core and composite cylinder provided with matrix core |
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