CN106863874A - A kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction - Google Patents

A kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction Download PDF

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Publication number
CN106863874A
CN106863874A CN201710129416.7A CN201710129416A CN106863874A CN 106863874 A CN106863874 A CN 106863874A CN 201710129416 A CN201710129416 A CN 201710129416A CN 106863874 A CN106863874 A CN 106863874A
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China
Prior art keywords
honeycomb
complex
curved
sandwich construction
preimpregnation
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CN201710129416.7A
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CN106863874B (en
Inventor
李妍
赵新福
原崇新
金龙
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Commercial Aircraft Corp of China Ltd
Beijing Aeronautic Science and Technology Research Institute of COMAC
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Commercial Aircraft Corp of China Ltd
Beijing Aeronautic Science and Technology Research Institute of COMAC
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Application filed by Commercial Aircraft Corp of China Ltd, Beijing Aeronautic Science and Technology Research Institute of COMAC filed Critical Commercial Aircraft Corp of China Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00Subject matter not provided for in other groups of this subclass
    • B29D99/0089Producing honeycomb structures

Abstract

The present invention principally falls into honeycomb sandwich construction sizing field, and in particular to a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction.The present invention be directed to complex-curved, large scale, the preparation of big thickness aramid paper honeycomb sandwich construction, cellular crystallization operation is carried out using preimpregnation honeycomb, due to preimpregnation honeycomb, the resin on its surface not yet solidifies, therefore it is easier to deformation, in practical operation, preimpregnation honeycomb is laid in die surface, then by instrument, its edge is fixed, then enter curing oven or autoclave solidified, the honeycomb after solidification, with the preferable laminating degree of mould.The method maximally avoids cellular segmentation and splicing, reduces the use of splicing glued membrane, improves cellular quality after sizing, reduces cost.

Description

A kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction
Technical field
The present invention principally falls into honeycomb sandwich construction sizing field, and in particular to the honeycomb of complex-curved honeycomb sandwich construction Method for shaping.
Background technology
The characteristics of honeycomb sandwich construction is with its light high-stiffness, is widely used in the structure of aerospace flight vehicle, together When, in order to reduce its manufacturing cost, the co-curing reaction of honeycomb sandwich construction is increasingly valued by people.
In the application of civil aviation, paper honeycomb is very important cellular material, and its application widely, for example, is started The nacelle fan guard of machine and it is counter push away the regions such as radome fairing, have substantial amounts of application.In the curing process of honeycomb sandwich construction, especially With complex-curved, i.e., cellular zone change in shape is complicated, the on-deformable structural member of honeycomb for it, and large scale, big thickness Honeycomb, the control of its co-curing process is more difficult.For complex-curved, the bigger honeycomb of thickness is more difficult to deformation, at present Conventional settling mode has:It is required that cellular provider directly cuts into the shape of needs, or according to the shape and curvature of curved surface, Carry out cellular segmentation and splicing, then solidifying and setting with ensure splice shape.The shape of needs is directly cut into, can cause big Cellular waste is measured, increases the cost of manufacture, therefore cellular segmentation and splicing, be a kind of more conventional honeybee comparatively Nest mode of texturing, in this process, curved surface is more complicated, honeycomb thickness is bigger, then the quantity of piecemeal is more, due to the honeybee of piecemeal Nest needs to use splicing glued membrane to be bonded, therefore adds additional the weight of structural member, simultaneously for complex-shaped region, The quality of honeycomb stitching portion it is difficult to ensure that, it may appear that honeycomb splicing seams are excessive, splicing glued membrane cannot tamp the situation of splicing seams, shadow Ring the profile and quality of structural member.Meanwhile, it is necessary to take a substantial amount of time and manpower carries out part in the operation of honeycomb splicing Fixation, to prevent honeycomb during splicing and solidifying and setting, there is shift in position and cause splicing fail, therefore, it is right In complex-curved, large scale, the preparation of big thickness honeycomb sandwich construction, cellular sizing is wherein critical step, is also One problem.
The content of the invention
Regarding to the issue above, the invention provides a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction, to multiple Miscellaneous curved surface, large scale, the preparation of big thickness aramid paper honeycomb sandwich construction, cellular crystallization operation is carried out using preimpregnation honeycomb, Due to preimpregnation honeycomb, the resin on its surface not yet solidifies, therefore is easier to deformation, in practical operation, preimpregnation honeycomb is laid In die surface, then by instrument, its edge is fixed, then enters curing oven or autoclave is solidified, after solidification Honeycomb, with the preferable laminating degree of mould.The method it is maximum avoid cellular segmentation and splicing, reduce splicing glue The use of film, improves cellular quality after sizing, reduces cost.
The present invention is achieved by the following technical solutions:
A kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction, the honeycomb is used as with complex-curved structural member Interlayer, methods described will presoak honeycomb be fixed on die surface after carry out first time solidification, preimpregnation honeycomb table after hardening Secondary solidification is carried out after face rubberizing film and causes honeycomb sizing;Honeycomb after sizing as composite material structural member sandwich; It is in irregular shape because of composite material structural member, the more difficult deformation of cellular zone or sizing, herein referred to as complex-curved;
The mould is the former or formpiston matched with composite material structural member shape.The mould is according to composite structure The shape of part is selected, from the former or formpiston that are easier to laying.
Further, the mould is the formpiston of composite.
Further, methods described specifically includes following steps:
It is prepared by mould:Prepare composite male mould;
Die treatment:Punched with drill bit every a certain distance on die edge, clean male mold surfaces, in die surface erasing Releasing agent;
Preimpregnation honeycomb is fixed:Whole preimpregnation honeycomb is laid on formpiston, the hole on honeycomb and formpiston is sequentially passed through with pin, used Thin tied silk bypasses pin two ends and applying certain power makes honeycomb preferably fit in male mould face;
Solidify for the first time:It is heating and curing during fixed preimpregnation honeycomb is placed in into curing oven or autoclave;175 DEG C ± 10 DEG C, Constant temperature 120min ± 10min.
Rubberizing film:Glue-film stickup is in cellular upper and lower surface;
Solidify for second:Honeycomb after iron glued membrane is positioned in curing oven or autoclave and is solidified;Solidify for described second Parameter be:180 ± 5 DEG C of solidification 120min~135min, average heating rate is 0.5~2 DEG C/min, and maximum rate of temperature fall is 2℃/min。
A kind of complex-curved honeycomb sandwich construction, the sandwich is stand-by after being shaped using above-mentioned method for shaping, to make Composite material structural member needed for standby.This sandwich is one overall, non-division and splicing, and shape and required composite knot Structure matching degree is high, and laminating degree is preferable.
Advantageous Effects of the invention:
(1)The present invention solidifies in die surface to the preimpregnation honeycomb being easily deformed, it is to avoid cellular segmentation and splicing, subtracts Lacked splicing glued membrane use and solidification after honeycomb, with the preferable laminating degree of mould.
(2)The present invention to the further rubberizing film of honeycomb of pre-setting and carries out second solidification after first time solidifies, and has Effect prevents the contraction of cell edge in composite material shaping process and collapses, and enhances the mechanical strength of honeycomb, can Enough bear bigger pressure.
Brief description of the drawings
Fig. 1, the method flow diagram of embodiment 1;
Fig. 2, the preimpregnation honeycomb sizing schematic diagram of embodiment 1;
Fig. 3, the sizing secondary solidification schematic diagram of honeycomb of embodiment 1;
In figure:1. formpiston, 2. preimpregnation honeycomb, 3. pin, 4. former, 5. glued membrane, 6. presoak honeycomb after one-step solidification.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and It is not used in the restriction present invention.
Conversely, the present invention covers any replacement done in spirit and scope of the invention being defined by the claims, repaiies Change, equivalent method and scheme.Further, in order that the public has a better understanding to the present invention, below to of the invention thin It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art Description can also completely understand the present invention.
Embodiment 1
A kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction, methods described will be presoaked after honeycomb is fixed on die surface First time solidification is carried out, secondary solidification is carried out after preimpregnation honeycomb surface rubberizing film after hardening and is caused honeycomb sizing;After sizing Honeycomb as composite material structural member sandwich;Because the formpiston of the present embodiment composite material structural member is more easy to laying preimpregnation Honeycomb, when preimpregnation honeycomb is shaped, mould is the formpiston matched with the shape of composite, and when glued membrane is shaped, mould uses multiple Condensation material structural member prepares mould, is former.
As shown in figure 1, methods described specifically includes following steps:
It is prepared by mould:Prepare composite male mould;
Die treatment:Punched with drill bit every a certain distance on die edge, clean male mold surfaces, in die surface erasing Releasing agent;Distance can be set according to situation, be punched every 10cm in this implementation power;
Preimpregnation honeycomb is fixed:Whole preimpregnation honeycomb 2 is laid on formpiston 1, is sequentially passed through on honeycomb and formpiston with pin 3 Hole, bypasses pin two ends and applying certain power makes honeycomb preferably fit in male mould face with thin tied silk;As shown in Figure 2
Solidify for the first time:It is heating and curing during fixed preimpregnation honeycomb is placed in into curing oven or autoclave;175 DEG C ± 10 DEG C, Constant temperature 120min ± 10min.
Rubberizing film:Glue-film stickup is in cellular upper and lower surface;
Solidify for second:Honeycomb after rubberizing film is fixed on cavity block, being positioned in curing oven or autoclave solidify To sizing honeycomb, as shown in Figure 3;The parameter of second solidification is:180 ± 5 DEG C of solidification 120min~135min, average liter Warm speed is 0.5~2 DEG C/min, and maximum rate of temperature fall is 2 DEG C/min.
Selection formpiston carries out presoaking cellular sizing, because the relatively good operation of formpiston, after preimpregnation honeycomb solidification, and simply one Individual general profile, also with certain flexibility.When glued membrane pre-setting is carried out, selection former is carried out, after being desirable to pre-setting Honeycomb, as close as required profile.
Embodiment 2
The present embodiment is identical with the scheme of embodiment 1, and difference is that composite material structural member is male mould forming, due to formpiston Laying preimpregnation honeycomb is more easy to, therefore mould described in preimpregnation honeycomb pre-setting is formpiston, the model used by secondary solidification of composite It is formpiston.

Claims (7)

1. a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction, the honeycomb as complex-curved interlayer, Characterized in that, methods described will be presoaked after honeycomb is fixed on die surface carries out first time solidification, preimpregnation honeybee after hardening Secondary solidification is carried out after nest surface rubberizing film and causes honeycomb sizing;Honeycomb after sizing as composite material structural member interlayer knot Structure;
The mould is the former or formpiston matched with the shape of composite material structural member.
2. as claimed in claim 1 a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction, it is characterised in that the mould Has the formpiston for composite.
3. as claimed in claim 2 a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction, it is characterised in that
Methods described specifically includes following steps:
It is prepared by mould:Prepare composite male mould;
Die treatment:Punched with drill bit on die edge, clean male mold surfaces, releasing agent is rubbed in die surface;
Preimpregnation honeycomb is fixed:Whole preimpregnation honeycomb is laid on formpiston, the hole on honeycomb and formpiston is sequentially passed through with pin, used Thin tied silk bypasses pin two ends and applying certain power makes honeycomb preferably fit in male mould face;
Solidify for the first time:It is heating and curing during fixed preimpregnation honeycomb is placed in into curing oven or autoclave;
Rubberizing film:Glue-film stickup is in cellular upper and lower surface;
Solidify for second:Honeycomb after rubberizing film is placed in female mold surfaces and is positioned in curing oven or autoclave and is solidified.
4. a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction as claimed in claim 3, it is characterised in that described the The parameter of one-step solidification is:175 ± 10 DEG C, 120 ± 10min of constant temperature.
5. a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction as claimed in claim 3, it is characterised in that described the The parameter of secondary solidification is:180 ± 5 DEG C of solidification 120min~135min, average heating rate is 0.5~2 DEG C/min, maximum drop Warm speed is 2 DEG C/min.
6. as claimed in claim 3 a kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction, it is characterised in that the mould Tool material therefor is steel.
7. a kind of complex-curved honeycomb sandwich construction, it is characterised in that the honeycomb uses any methods describeds of claim 1-6 Sizing, the honeycomb after sizing as sandwich, carried out by glued membrane and the prepreg of upper and lower panel it is be bonded, to carry out composite wood Expect the preparation of structural member.
CN201710129416.7A 2017-03-06 2017-03-06 A kind of honeycomb method for shaping of complex-curved honeycomb sandwich construction Active CN106863874B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108297163A (en) * 2018-04-03 2018-07-20 东华大学 A kind of low cost honeycomb curved-surface processing method
CN108527889A (en) * 2018-04-03 2018-09-14 东华大学 A kind of honeycomb curved surface high-efficiency machining method
CN109291486A (en) * 2018-08-23 2019-02-01 江苏恒神股份有限公司 A kind of hyperbolicity Special paper honeycomb structure setting process method
CN109291466A (en) * 2018-08-30 2019-02-01 哈尔滨飞机工业集团有限责任公司 A kind of forming method of big chamfering honeycomb sandwich construction part
CN109591313A (en) * 2018-10-12 2019-04-09 江西昌河航空工业有限公司 A kind of honeycomb preforming process of large size tubbiness composite material interlayer part
CN110116459A (en) * 2019-05-22 2019-08-13 永康雪纺自动化设备有限公司 A kind of large size ceramic honeycomb inlaying device
CN110136581A (en) * 2019-04-01 2019-08-16 陈波 The attaching process of plastic optical glue and application and a kind of display
CN113601878A (en) * 2021-06-30 2021-11-05 航天材料及工艺研究所 Large-curvature special-shaped surface and large-height honeycomb co-curing sandwich structure composite material and forming method thereof

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108297163A (en) * 2018-04-03 2018-07-20 东华大学 A kind of low cost honeycomb curved-surface processing method
CN108527889A (en) * 2018-04-03 2018-09-14 东华大学 A kind of honeycomb curved surface high-efficiency machining method
CN109291486A (en) * 2018-08-23 2019-02-01 江苏恒神股份有限公司 A kind of hyperbolicity Special paper honeycomb structure setting process method
CN109291466A (en) * 2018-08-30 2019-02-01 哈尔滨飞机工业集团有限责任公司 A kind of forming method of big chamfering honeycomb sandwich construction part
CN109591313A (en) * 2018-10-12 2019-04-09 江西昌河航空工业有限公司 A kind of honeycomb preforming process of large size tubbiness composite material interlayer part
CN109591313B (en) * 2018-10-12 2021-04-30 江西昌河航空工业有限公司 Honeycomb preforming process for large barrel-shaped composite material sandwich part
CN110136581A (en) * 2019-04-01 2019-08-16 陈波 The attaching process of plastic optical glue and application and a kind of display
CN110116459A (en) * 2019-05-22 2019-08-13 永康雪纺自动化设备有限公司 A kind of large size ceramic honeycomb inlaying device
CN113601878A (en) * 2021-06-30 2021-11-05 航天材料及工艺研究所 Large-curvature special-shaped surface and large-height honeycomb co-curing sandwich structure composite material and forming method thereof

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