CN106956472A - A kind of composite shock resistance structure and its forming method - Google Patents
A kind of composite shock resistance structure and its forming method Download PDFInfo
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- CN106956472A CN106956472A CN201710124103.2A CN201710124103A CN106956472A CN 106956472 A CN106956472 A CN 106956472A CN 201710124103 A CN201710124103 A CN 201710124103A CN 106956472 A CN106956472 A CN 106956472A
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- 230000035939 shock Effects 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 34
- 241000446313 Lamella Species 0.000 claims abstract description 70
- 238000005516 engineering process Methods 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 238000007493 shaping process Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 239000004760 aramid Substances 0.000 claims description 4
- 229920003235 aromatic polyamide Polymers 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract description 80
- 230000006378 damage Effects 0.000 abstract description 21
- 208000027418 Wounds and injury Diseases 0.000 abstract description 14
- 239000000835 fiber Substances 0.000 abstract description 12
- 239000011229 interlayer Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 208000014674 injury Diseases 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000306 component Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000009745 resin transfer moulding Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/08—Impregnating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Road Paving Structures (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The present invention relates to a kind of composite shock resistance structure and its forming method, the inexpensive manufacturing issue of annular shock resistance structure is solved, belongs to structural composite material manufacturing technology field.The composite shock resistance structure of the present invention has alternating layer, because its alternating layer is to lay the grid pilotaxitic texture formed by adjacent laying prepreg tape interleaved, 2 dimension laminate structures of conventional composite materials laminate are changed into 2.5 dimension laminate structures by the structure, therefore the interlayer performance and impact injury tolerance limit of the shock resistance structure is made to improve more than 15%, with more preferable shock resistance；The annulate lamella of the composite shock resistance structure has splendid fiber continuity and cut-off simultaneously, composite materials property can at utmost be played, by the close hoop of alternating layer between two annulate lamellas, thus the further damage tolerance and interlayer performance of lifting alternating layer；Therefore, the composite shock resistance structure that the present invention is provided has the advantages that good shock resistance damage and failure.
Description
Technical field
The present invention proposes a kind of composite structure and its forming method with anti-impact damage performance, belongs to structure and answers
Condensation material manufacturing technology field.
Background technology
Engine is the core component of aviation aircraft, to prevent or reducing the impact damage in flight course to engine
Wound, aero-engine is contained casing and is made of the stronger three dimensional fabric of impact resistance, and the three dimensional fabric passes through RTM (Resin
Tranfer Molding, resin transfer moulding) shaping, in shaping, the design size of casing is first contained according to engine, is led to
The mode of 3 D weaving is crossed, using dry yarn knitting forming, then the fabric resin by injection to shaping, obtains finished product.
Above method weaving is complicated, manufacture difficulty is big, high cost.Therefore, a kind of composite shock resistance knot is needed badly
Structure, to reduce the manufacturing cost for starting casing.
The content of the invention
The technical problem to be solved in the present invention is：Overcome prior art not enough, propose a kind of composite shock resistance structure
And its forming method, interweaving with forming alternating layer by carrying out grid between adjacent laying, and fix alternating layer by annulate lamella twines
Around form, obtain resisting the high composite structure of performance, this method technique is simple, greatly reduces impact resistance composite wood
The manufacturing cost of material.
The purpose of the present invention is achieved through the following technical solutions：
A kind of composite shock resistance structure, including an alternating layer and two annulate lamellas, the alternating layer are located at two institutes
State between annulate lamella, the alternating layer includes the first laying and the second laying, first laying by a plurality of first prepreg tape with
First laying angle is laid to be formed, and second laying is laid with the second laying angle by a plurality of second prepreg tape and formed, and institute
State the first prepreg tape and second prepreg tape intertexture in laying to be laid, so that first laying and second paving
Layer is overlapping, and the annulate lamella is formed by least one annulate lamella prepreg tape along the circumferentially wound of the impact structure or lay, institute
State the first laying angle different with the second laying angle.
In an alternative embodiment, the alternating layer also includes the 3rd laying, and the 3rd laying is by a plurality of 3rd preimpregnation
Band lays to be formed with the 3rd laying angle, and first prepreg tape, second prepreg tape and the 3rd prepreg tape are in laying
When intertexture laid so that first laying, second laying and the 3rd laying are overlapping, the 3rd wing flapping
Degree, the first laying angle, the second laying angle are different.
A kind of forming method of composite shock resistance structure, comprises the following steps：
Step 1：First one layer of annulate lamella is wound or lays in die surface；
Step 2：Alternating layer is laid on the annulate lamella of formation；
Step 3：Then one layer of annulate lamella is wound or laid again on the alternating layer of formation；
Wherein, the winding of annulate lamella described in step 1 and step 3 or laying method include：
It is circumferentially wound or lay annulate lamella prepreg tape along mould, until being paved with the die surface, form annulate lamella；
In step 2, the laying method of the alternating layer includes：
In the annular layer surface of formation, the first prepreg tape is laid according to the first laying angle, to form the first laying；
The second prepreg tape is laid according to the second laying angle, to form the second laying, wherein first prepreg tape and institute
State the second prepreg tape intertexture in laying to be laid, the first laying angle is different with the second laying angle, described
First laying and second laying, which are overlapped, forms the alternating layer.
In an alternative embodiment, the laying method of the alternating layer includes：
In the annular layer surface of formation, the first prepreg tape is laid according to the first laying angle, to form the first laying；
The second prepreg tape is laid according to the second laying angle, to form the second laying；
The 3rd prepreg tape is laid according to the 3rd laying angle, to form the 3rd laying, wherein first prepreg tape, described
Second prepreg tape and the 3rd prepreg tape intertexture in laying are laid, the first laying angle, second laying
Angle and the 3rd laying angle are different, and first laying, second laying and the 3rd laying overlap shape
Into the alternating layer.
In an alternative embodiment, first prepreg tape and second prepreg tape intertexture in laying are laid,
Comprise the following steps：
(1) first prepreg tape is laid at interval of the first width, until being paved with the die surface, first width
Not less than the bandwidth of first prepreg tape；
(2) second prepreg tape is laid at interval of the second width, until being paved with the die surface, second width
Not less than the bandwidth of second prepreg tape；
(3) in each interval, close to first prepreg tape laid, first prepreg tape is laid, until
It is paved with the die surface；
(4) in each interval, close to second prepreg tape laid, second prepreg tape is laid, until
It is paved with the die surface；
(5) repeat step (3) and (4), until the spacing between the prepreg tape of adjacent two first laid is respectively less than
Spacing between the bandwidth of first prepreg tape, two adjacent the second prepreg tapes is respectively less than the band of second prepreg tape
Width, stops laying.
In an alternative embodiment, first prepreg tape and second prepreg tape intertexture in laying are laid,
Comprise the following steps：
1) first prepreg tape is laid；
2) second prepreg tape is laid；
3) another the first prepreg tape is laid with last the first spaced first width of preimpregnation laid；
4) another the second prepreg tape is laid with last the second spaced second width of preimpregnation laid；
5) it is repeated in step 3) and 4), until being paved with the die surface；
6) in an interval of the first prepreg tape laid, close to the first prepreg tape paving laid described in one
Put first prepreg tape；
7) in an interval of the second prepreg tape laid, close to the second prepreg tape paving laid described in one
Put second prepreg tape；
8) then, in another interval of first prepreg tape laid, close to what is laid described in one
First prepreg tape lays another the first prepreg tape；
9) it is pre- close to second laid described in one in another interval of second prepreg tape laid
Band is soaked, another the second prepreg tape is laid；
10) repeat step 8) and 9), until being paved with the die surface；
Repeat step 6) -9) until being smaller than between adjacent two first prepreg tape that has laid described the
The bandwidth of one prepreg tape, the distance between two adjacent second prepreg tapes are less than the bandwidth of second prepreg tape, stop
Only lay.
In an alternative embodiment, in the same direction of the alternating layer between two adjacent prepreg tapes at intervals of
0.5mm-1mm, the annulate lamella prepreg tape is in winding or lay, without overlap joint gapless between two adjacent rings.
In an alternative embodiment, in step 1 with first direction along the mould it is circumferentially wound or lay annulate lamella preimpregnation
In band, step 3 with second direction along the mould it is circumferentially wound or lay another annulate lamella prepreg tape, the first direction and
The second direction is opposite.
In an alternative embodiment, the prepreg that the prepreg tape is used is carbon fiber prepreg, Aramid Prepreg, glass
One or more kinds of combinations in fiber prepreg material.
In an alternative embodiment, the alternating layer passes through institute by automatic placement technology laying forming, the annulate lamella
State automatic placement technology or the shaping of band winding technology.
Present invention advantage compared with prior art is：
1) the composite shock resistance structure that the present invention is provided, with alternating layer, because its alternating layer is by adjacent laying
Prepreg tape interleaved lays the grid pilotaxitic texture to be formed, and the structure ties up laminate structures by the 2 of conventional composite materials laminate
2.5 dimension laminate structures are changed into, therefore make the shock resistance structure compared with traditional laminate, interlayer performance and impact injury hold
Limit improves more than 15%, with more preferable shock resistance；The annulate lamella of the composite shock resistance structure has simultaneously
Splendid fiber continuity and cut-off, can at utmost play composite materials property, and the close hoop of alternating layer is existed
Between two annulate lamellas, thus the further damage tolerance and interlayer performance of lifting alternating layer；Therefore, what the present invention was provided is compound
Material shock resistance structure has the advantages that good shock resistance damage and failure.
2) the composite shock resistance structure forming method that the present invention is provided, shaping is twined by the way that prepreg tape is successively spread, its
Laying stretching, compression performance are beneficial to lifting member integral rigidity compared with nearly twice of conventional three-dimensional braiding structure lifting, and prepreg
Laying forming is successively automated, laying prepreg fiber content deviation is can be controlled within 2%, prepreg lays angular error can
Within 0.3 ° of control, Forming Quality is easily controllable, and manufacture efficiency is high, and manufacturing cost is greatly lowered.
3) thickness is basically identical after each layer laying prepreg tape solidification of the annular composite material shock resistance damage ply angles,
Fiber volume percentage composition can reach more than 63%, and deviation is can be controlled within ± 2%.
4) present invention can need to be designed according to load, the laying angle and overlay thickness of alternating layer and annular thickness
Degree can all design adjustment, and alternating layer mesh width can also require design adjustment, annular shock resistance structure tool according to shock loading
There is good designability.
5) present invention can not only use casing containment structure, can also be applied to fuselage, launching tube, storage tank etc..
Brief description of the drawings
Fig. 1 is a kind of composite shock resistance structure profile provided in an embodiment of the present invention；
Fig. 2 is step 3 lay effect diagram in the specific embodiment of the invention 1；
Fig. 3 is step 4 lay effect diagram in the specific embodiment of the invention 1；
Fig. 4 is step 5 lay effect diagram in the specific embodiment of the invention 1；
Fig. 5 is step 6 lay effect diagram in the specific embodiment of the invention 1；
Fig. 6 is step 3 and 4 lay effect diagram in the specific embodiment of the invention 2；
Fig. 7 is step 5 and 6 lay effect diagram in the specific embodiment of the invention 2；
Fig. 8 is alternating layer outside schematic diagram in the specific embodiment of the invention 2.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
The embodiment of the present invention provides a kind of composite shock resistance structure, including an alternating layer 1 and two annulate lamellas 2, hands over
Lamination 1 is located between two annulate lamellas 2, and alternating layer 1 includes the first laying and the second laying, and first laying is by a plurality of first
Prepreg tape lays to be formed with the first laying angle, and second laying lays shape by a plurality of second prepreg tape with the second laying angle
Into, and first prepreg tape and second prepreg tape intertexture in laying laid, so that first laying and institute
State the second laying to overlap, annulate lamella 2 is by least one annulate lamella prepreg tape is along the circumferentially wound of the impact structure or lays shape
Into the first laying angle is different with the second laying angle.
Specifically, in embodiments of the present invention, the first prepreg tape, the second prepreg tape, annulate lamella prepreg tape can for shape,
The prepreg tape that the attribute such as the attribute identical prepreg tape such as material or shape, material is differed, the present invention is not limited；
Prepreg tape can be using one kind or one in a variety of prepregs such as carbon fiber prepreg, Aramid Prepreg, glass fibre prepreg
The mixture of above prepreg is planted, the present invention is not limited.
In embodiments of the present invention, first prepreg tape and second prepreg tape intertexture in laying are laid,
First a plurality of first prepreg tape of lay spaced apart, then a plurality of second prepreg tape of lay spaced apart can be included, so
A plurality of first prepreg tape is laid in the interval of a plurality of first prepreg tape of lay again afterwards, afterwards in a plurality of second preimpregnation of lay
The interval of band lays a plurality of second prepreg tape, by that analogy, until completing laying；One article the can also be included first laying
One prepreg tape, then second prepreg tape is laid, the first prepreg tape then laid with the last time is spaced apart to be laid separately
One the first prepreg tape, the second prepreg tape another the second prepreg tape of lay spaced apart laid afterwards with the last time,
By that analogy, until completing laying；In other embodiments, the first prepreg tape and the second prepreg tape can also be used when laying
The intertexture of other forms lays mode, and the present invention is not limited.
In other embodiments, the quantity of annulate lamella and alternating layer can need the increase present invention not limit according to load
It is fixed.
The composite shock resistance structure that the present invention is provided, with alternating layer, because its alternating layer is pre- by adjacent laying
The spaced grid pilotaxitic texture for laying and being formed that interweaves of leaching, the structure changes 2 dimension laminate structures of conventional composite materials laminate
It is changed into 2.5 dimension laminate structures, therefore makes the shock resistance structure compared with traditional laminate, interlayer performance and impact injury tolerance limit
More than 15% is improved, with more preferable shock resistance；The annulate lamella of the composite shock resistance structure has pole simultaneously
Good fiber continuity and cut-off, can at utmost play composite materials property, by the close hoop of alternating layer two
Between individual annulate lamella, thus the further damage tolerance and interlayer performance of lifting alternating layer；Therefore, the composite wood that the present invention is provided
Material shock resistance structure has the advantages that good shock resistance damage and failure.
Specifically, the present invention an alternative embodiment in, alternating layer 1 also include the 3rd laying, the 3rd laying by
A plurality of 3rd prepreg tape lays to be formed with the 3rd laying angle, first prepreg tape, second prepreg tape and the described 3rd
Prepreg tape intertexture in laying is laid, so that first laying, second laying and the 3rd laying are overlapping, institute
State the 3rd laying angle, the first laying angle, the second laying angle different；
In embodiments of the present invention, first prepreg tape, second prepreg tape and the 3rd prepreg tape are in laying
When intertexture laid, can include it is first spaced apart lay a plurality of first prepreg tape, then lay spaced apart is more
The prepreg tape of bar second, it is spaced apart afterwards to lay a plurality of 3rd prepreg tape, then again in a plurality of first prepreg tape of lay
Interval lay a plurality of first prepreg tape, lay a plurality of second preimpregnation in the interval of a plurality of second prepreg tape of lay
Band, a plurality of 3rd prepreg tape is laid in the interval of a plurality of 3rd prepreg tape of lay, by that analogy, until completing paving
Layer；It can also include first laying first prepreg tape, then lay second prepreg tape, one article of the 3rd preimpregnation is laid afterwards
Band, the first prepreg tape another the first prepreg tape of lay spaced apart then laid with the last time, with last time lay
The second prepreg tape it is spaced apart lay another the second prepreg tape, the 3rd preimpregnation laid with the last time is spaced certain
Distance lays another article of the 3rd prepreg tape, by that analogy, until completing laying；In other embodiments, the first prepreg tape, second
Prepreg tape and the 3rd prepreg tape can also lay mode when laying using the alternating of other forms, and the present invention is not limited；
In other embodiments, alternating layer can also include the more layings of the 4th laying even the 5th laying etc., each
The laying angle of laying is differed, and the specific laying quantity that alternating layer is included can need to be designed according to load, hand over
The laying angle and overlay thickness and annulate lamella thickness of lamination can all design adjustment, and interval of the alternating layer in total
Width can also require design adjustment according to shock loading, and the present invention is not limited.
The embodiment of the present invention additionally provides a kind of forming method of composite shock resistance structure, comprises the following steps：
Step 1：First one layer of annulate lamella is wound or lays in die surface；
Step 2：Alternating layer is laid on the annulate lamella of formation；
Step 3：Then one layer of annulate lamella is wound or laid again on the alternating layer of formation；
Wherein, the winding of annulate lamella described in step 1 and step 3 or laying method include：
It is circumferentially wound or lay annulate lamella prepreg tape along the mould, until being paved with the die surface, form annulate lamella；
In step 2, the laying method of the alternating layer includes：
In the annular layer surface of formation, the first prepreg tape is laid according to the first laying angle, to form the first laying；
The second prepreg tape is laid according to the second laying angle, to form the second laying, wherein first prepreg tape and institute
State the second prepreg tape intertexture in laying to be laid, the first laying angle is different with the second laying angle, described
First laying and second laying, which are overlapped, forms the alternating layer.
Specifically, in embodiments of the present invention, the first prepreg tape, the second prepreg tape, annulate lamella prepreg tape can for shape,
The prepreg tape that the attribute such as the attribute identical prepreg tape such as material or shape, material is differed, the present invention is not limited；
Prepreg tape can be using one kind or one in a variety of prepregs such as carbon fiber prepreg, Aramid Prepreg, glass fibre prepreg
The mixture of above prepreg is planted, the present invention is not limited.
In embodiments of the present invention, first prepreg tape and second prepreg tape intertexture in laying are laid,
First a plurality of first prepreg tape of lay spaced apart, then a plurality of second prepreg tape of lay spaced apart can be included, so
A plurality of first prepreg tape is laid in the interval of a plurality of first prepreg tape of lay again afterwards, afterwards in a plurality of second preimpregnation of lay
The interval of band lays a plurality of second prepreg tape, by that analogy, until completing laying；One article the can also be included first laying
One prepreg tape, then second prepreg tape is laid, the first prepreg tape then laid with the last time is spaced apart to be laid separately
One the first prepreg tape, the second prepreg tape another the second prepreg tape of lay spaced apart laid afterwards with the last time,
By that analogy, until completing laying；In other embodiments, the first prepreg tape and the second prepreg tape can also be used when laying
The alternating of other forms lays mode, and the present invention is not limited.
The composite shock resistance structure forming method that the present invention is provided, shaping is twined by the way that prepreg tape is successively spread, and it spreads
Layer stretching, compression performance compared with conventional three-dimensional braiding structure lifting it is nearly twice, it is beneficial to lifting member integral rigidity, and prepreg by
Layer automation laying forming, laying prepreg fiber content deviation is can be controlled within 2%, and it is controllable that prepreg lays angular error
Within 0.3 ° of system, Forming Quality is easily controllable, and manufacture efficiency is high, and manufacturing cost is greatly lowered；It is provided in an embodiment of the present invention
Composite shock resistance structure prepared by forming method, with alternating layer, because its alternating layer is to presoak interband by adjacent laying
2 dimension laminate structures of conventional composite materials laminate are changed into 2.5 by the grid pilotaxitic texture for laying and being formed every interweaving, the structure
Laminate structures are tieed up, therefore make the shock resistance structure compared with traditional laminate, interlayer performance and impact injury tolerance limit are improved
More than 15%, with more preferable shock resistance；The annulate lamella of the composite shock resistance structure has splendid fiber simultaneously
Continuity and cut-off, can at utmost play composite materials property, by the close hoop of alternating layer in two annulars
Between layer, thus the further damage tolerance and interlayer performance of lifting alternating layer；Therefore, the composite anti-impact that the present invention is provided
Hitting structure has the advantages that good shock resistance damage and failure.
Specifically, of the invention real one it is optional apply example, the laying method of the alternating layer includes：
In the annular layer surface of formation, the first prepreg tape is laid according to the first laying angle, to form the first laying；
The second prepreg tape is laid according to the second laying angle, to form the second laying；
The 3rd prepreg tape is laid according to the 3rd laying angle, to form the 3rd laying, wherein first prepreg tape, described
Second prepreg tape and the 3rd prepreg tape intertexture in laying are laid, the first laying angle, second laying
Angle and the 3rd laying angle are different, and first laying, second laying and the 3rd laying overlap shape
Into the alternating layer.
In embodiments of the present invention, first prepreg tape, second prepreg tape and the 3rd prepreg tape are in laying
When intertexture laid, can include it is first spaced apart lay a plurality of first prepreg tape, then lay spaced apart is more
The prepreg tape of bar second, it is spaced apart afterwards to lay a plurality of 3rd prepreg tape, then again in a plurality of first prepreg tape of lay
Interval lay a plurality of first prepreg tape, lay a plurality of second preimpregnation in the interval of a plurality of second prepreg tape of lay
Band, a plurality of 3rd prepreg tape is laid in the interval of a plurality of 3rd prepreg tape of lay, by that analogy, until completing paving
Layer；It can also include first laying first prepreg tape, then lay second prepreg tape, one article of the 3rd preimpregnation is laid afterwards
Band, the first prepreg tape another the first prepreg tape of lay spaced apart then laid with the last time, with last time lay
The second prepreg tape it is spaced apart lay another the second prepreg tape, the 3rd preimpregnation laid with the last time is spaced certain
Distance lays another article of the 3rd prepreg tape, by that analogy, until completing laying；In other embodiments, the first prepreg tape, second
Prepreg tape and the 3rd prepreg tape can also lay mode when laying using the alternating of other forms, and the present invention is not limited；
In other embodiments, alternating layer can also include interweaving the 4th laying laid even the 5th laying etc. more
Laying, the laying angle of each laying is differed, the specific laying quantity that alternating layer is included can be needed according to load into
Row design, the laying angle and overlay thickness and annulate lamella thickness of alternating layer can all design adjustment, and alternating layer interval width
Also design adjustment can be required according to shock loading, the present invention is not limited.
In an alternative embodiment, first prepreg tape and second prepreg tape intertexture in laying are laid,
Comprise the following steps：
(1) first prepreg tape is laid at interval of the first width, until being paved with the die surface, first width
Not less than the bandwidth of first prepreg tape；
Specifically, the first width is typically slightly larger than the bandwidth integral multiple of the first prepreg tape in embodiments of the present invention；
(2) second prepreg tape is laid at interval of the second width, until being paved with the die surface, second width
Not less than the bandwidth of second prepreg tape；
Specifically, the second bandwidth is typically slightly larger than the bandwidth integral multiple of the second prepreg tape in the present invention is implemented；
(3) in each interval, close to first prepreg tape laid, first prepreg tape is laid, until
It is paved with the die surface；
(4) in each interval, close to second prepreg tape laid, second prepreg tape is laid, until
It is paved with the die surface；
(5) repeat step (3) and (4), until the spacing between the prepreg tape of adjacent two first laid is respectively less than
Spacing between the bandwidth of first prepreg tape, two adjacent the second prepreg tapes is respectively less than the band of second prepreg tape
Width, stops laying.
It is slightly larger than a bandwidth of the first prepreg tape with the first width, the second width is slightly larger than a band of the second prepreg tape
The intertexture laying method of a width of example, the first prepreg tape and the second prepreg tape includes：
(1) first prepreg tape is laid at interval of the first width, until being paved with the die surface；
(2) second prepreg tape is laid at interval of the second width, until being paved with the die surface；
(3) first prepreg tape is laid in each interval of step (1) formation, until being paved with the die surface；
(4) second prepreg tape is laid in each interval of step (2) formation, until the die surface is paved with,
Stop laying.
It is slightly larger than two bandwidth of the first prepreg tape with the first width, the second width is slightly larger than two bands of the second prepreg tape
The intertexture laying method of a width of example, the first prepreg tape and the second prepreg tape includes：
(1) first prepreg tape is laid at interval of the first width, until being paved with the die surface；
(2) second prepreg tape is laid at interval of the second width, until being paved with the die surface；
(3) in each interval of step (1) formation, close to first prepreg tape laid, lay one article the
One prepreg tape, until being paved with the die surface；
(4) in each interval of step (2) formation, close to second prepreg tape laid, lay one article the
Two prepreg tapes, until being paved with the die surface；
(5) in each in interval of step (3) formation, close to first prepreg tape laid, one is laid
First prepreg tape, until being paved with the die surface；
(6) in each in interval of step (4) formation, close to second prepreg tape laid, one is laid
Second prepreg tape, until being paved with the die surface, stops laying.
In an alternative embodiment, first prepreg tape, second prepreg tape and the 3rd prepreg tape are in laying
When intertexture laid, comprise the following steps：
1) first prepreg tape is laid；
2) second prepreg tape is laid；
3) another the first prepreg tape is laid with last the first spaced first width of preimpregnation laid；
4) another the second prepreg tape is laid with last the second spaced second width of preimpregnation laid；
5) it is repeated in step 3) and 4), until being paved with the die surface；
6) in an interval of the first prepreg tape laid, close to the first prepreg tape paving laid described in one
Put first prepreg tape；
7) in an interval of the second prepreg tape laid, close to the second prepreg tape paving laid described in one
Put second prepreg tape；
8) then, in another interval of first prepreg tape laid, close to what is laid described in one
First prepreg tape, lays another the first prepreg tape；
9) it is pre- close to second laid described in one in another interval of second prepreg tape laid
Band is soaked, another the second prepreg tape is laid；
10) repeat step 8) and 9), until being paved with the die surface；
Repeat step 6) -9) until the spacing between adjacent two first prepreg tape laid is more than zero
Less than the bandwidth of first prepreg tape, the distance between two adjacent second prepreg tapes are more than zero and are less than described second
The bandwidth of prepreg tape, stops laying.
The intertexture laying method of first prepreg tape and the second prepreg tape provided in an embodiment of the present invention, will be composite laminated
Plate changes into 2.5 dimensions by traditional 2 dimension, hence in so as to shock resistance structure there is more preferable interlayer performance and impact injury to hold
Limit, more traditional laminate lifting more than 15%.
Specifically, in embodiments of the present invention, between two prepreg tapes adjacent in the same direction of the alternating layer
At intervals of 0.5mm-1mm, the annulate lamella prepreg tape is in winding or lay, without overlap joint gapless between two adjacent rings.
In the embodiment of the present invention, the alternating layer passes through the automatic placement by automatic placement technology laying forming, the annulate lamella
Technology or the shaping of band winding technology；Automatic placement technology be by several preimpregnation silks or with multiaxis placement head (mechanical hand) according to setting
Meter requires that identified laying direction is laid in mandrel surface under pressure roller pressurization, and compacting sizing, whole process is surveyed by computer
Control, coordination system are completed.It can according to the change of component body surface shape, cut off tow at any time, it is necessary to when continue to convey
Tow, is adapted to the shaping of the complex shaped components such as concave curved surface, convex surface, variable cross-section；Craft can also be passed through in other embodiments
The prepreg overlay mode such as laying is molded, and the present invention is not limited.
Specifically, in embodiments of the present invention, in step 1 with first direction along the mould it is circumferentially wound or lay annular
Layer prepreg tape, it is circumferentially wound or lay another annulate lamella prepreg tape, described first along the mould with second direction in step 3
Direction and the second direction are opposite.Annulate lamella has splendid fiber continuity and cut-off, by by the two of hoop alternating layer
Individual annulate lamella is arranged to wind or lays structure in opposite direction, can at utmost play the tightening force of annulate lamella, will hand over
The close hoop of lamination further lifts the damage tolerance and interlayer performance of alternating layer between two annulate lamellas
The specific embodiment provided below for the present invention：
Embodiment 1：
1) ring mould is chosen；
2) annulate lamella prepreg tape is wound along 0 ° of direction of ring mould ring, until being paved with ring mould surface, forms continuous
The annulate lamella of fiber；The annulate lamella prepreg tape uses carbon fiber prepreg, width 50mm；
3) it is 60 ° according to laying angle, lays 1 the first prepreg tape at interval of 12.9mm, be so paved with whole cylinder, the
The prepreg that one prepreg tape is used presoaks bandwidth 12.7mm (as shown in Figure 2) for carbon fiber prepreg；
4) it is -60 ° according to laying angle, lays 1 the second prepreg tape at interval of 12.9mm, be so paved with whole cylinder,
The prepreg that second prepreg tape is used presoaks bandwidth 12.7mm (as shown in Figure 3) for carbon fiber prepreg；
5) according to laying angle be 60 °, in step 3) interval lay the first prepreg tape (as shown in Figure 4), prepreg tape
Width 12.7mm, is so paved with whole cylinder；
6) according to laying angle be -60 °, in step 4) interval lay the second prepreg tape, presoak bandwidth 12.7mm,
Whole cylinder (as shown in Figure 5) is so paved with, the first prepreg tape is obtained and the second preimpregnation tape alternation lays the alternating layer to be formed；
7) in step 6) outside the alternating layer that is formed, annulate lamella prepreg tape is wound along 0 ° of direction of ring mould ring, until paving
Full ring mould surface, forms another layer of annulate lamella, preimpregnation bandwidth 50mm；
8) repeat step 3) to step 7), after 4 repetitions, complete annular composite material shock resistance damage ply angles part
Shaping；
9) component of shaping is put into autoclave temperature-pressure to solidify, 180 DEG C of solidification temperature, solidifying pressure 0.6MPa, very
Pneumatics power 0.1MPa；
10) go out after tank and be stripped, flash removed is removed in polishing, obtain finished product.Embodiment 2
1) ring mould is chosen；
2) annulate lamella prepreg tape is laid along 0 ° of direction of ring mould ring, until being paved with ring mould surface, forms continuous
The annulate lamella of fiber；The annulate lamella prepreg tape uses aramid fiber prepreg, prepreg width 80mm；
3) it is 60 ° according to laying angle, lays 1 the first prepreg tape, the prepreg that the first prepreg tape is used is glass
Fiber prepreg material, preimpregnation bandwidth 6.35mm；
4) it is -45 ° according to laying angle, lays 1 the second prepreg tape, the prepreg that the second prepreg tape is used is fine for carbon
Tie up prepreg, preimpregnation bandwidth is 12.7mm (referring to Fig. 6)；
5) width with last the first spaced 6.45mm of preimpregnation laid lays another the first prepreg tape；
6) width with last the second spaced 13.1mm of preimpregnation laid lays another the second prepreg tape；(referring to
Fig. 7)
7) it is repeated in step 5) and 6), until being paved with the die surface；
8) in first interval of the first prepreg tape laid, close to the first prepreg tape laid described in one
Lay first prepreg tape, preimpregnation bandwidth 6.35mm；
9) in first interval of the second prepreg tape laid, close to the second prepreg tape laid described in one
Lay second prepreg tape, preimpregnation bandwidth 12.7mm；
10) the first spaced 6.4mm of preimpregnation then, laid with the last time, in first prepreg tape laid
Another interval, lays another the first prepreg tape；
11) with last the second spaced 12.9mm of preimpregnation laid, in the another of second prepreg tape laid
Individual interval, lays another the second prepreg tape；
12) it is repeated in step 10) and 11), until being paved with the die surface, stop laying, obtain alternating layer (as schemed
Shown in 8)；
13) in step 12) outside the alternating layer that is formed, annulate lamella prepreg tape is laid along 0 ° of direction of ring mould ring, until
Ring mould surface is paved with, another layer of annulate lamella is formed,
14) repeat step 3) to step 13), it is repeated 10 times, completes annular composite material shock resistance damage ply angles part
Shaping；
15) component of shaping is put into autoclave temperature-pressure to solidify, 180 DEG C of solidification temperature, solidifying pressure 0.8MPa, very
Pneumatics power 0.1MPa；
16) go out after tank and be stripped, flash removed is removed in polishing, obtain finished product.
Composite shock resistance structure provided in an embodiment of the present invention, with alternating layer, because its alternating layer is by adjacent
Laying prepreg tape interleaved lays the grid pilotaxitic texture to be formed, and the structure is laminated by 2 dimensions of conventional composite materials laminate
Structural change is 2.5 dimension laminate structures, therefore makes the shock resistance structure compared with traditional laminate, and interlayer performance and impact are damaged
Hinder tolerance limit and improve more than 15%, with more preferable shock resistance；While the annulate lamella of the composite shock resistance structure
With splendid fiber continuity and cut-off, composite materials property can be at utmost played, by the close ring of alternating layer
Hoop is between two annulate lamellas, thus the further damage tolerance and interlayer performance of lifting alternating layer；Therefore, the present invention is provided
Composite shock resistance structure has the advantages that good shock resistance damage and failure.
The above, is only the optimal embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (10)
1. a kind of composite shock resistance structure, it is characterised in that including an alternating layer and two annulate lamellas, the alternating layer position
Between two annulate lamellas, the alternating layer includes the first laying and the second laying, and first laying is by a plurality of first
Prepreg tape lays to be formed with the first laying angle, and second laying lays shape by a plurality of second prepreg tape with the second laying angle
Into, and first prepreg tape and second prepreg tape intertexture in laying laid, so that first laying and institute
State the second laying to overlap, the annulate lamella is by least one annulate lamella prepreg tape is along the circumferentially wound of the impact structure or lays
Formed, the first laying angle is different with the second laying angle.
2. structure according to claim 1, it is characterised in that the alternating layer also includes the 3rd laying, the 3rd paving
Layer is laid with the 3rd laying angle by a plurality of 3rd prepreg tape and formed, first prepreg tape, second prepreg tape and described
3rd prepreg tape intertexture in laying is laid, so that first laying, second laying and the 3rd laying are handed over
Folded, the 3rd laying angle, the first laying angle, the second laying angle are different.
3. a kind of forming method of composite shock resistance structure, it is characterised in that comprise the following steps：
Step 1：First one layer of annulate lamella is wound or lays in die surface；
Step 2：Alternating layer is laid on the annulate lamella of formation；
Step 3：Then one layer of annulate lamella is wound or laid again on the alternating layer of formation；
Wherein, the winding of annulate lamella described in step 1 and step 3 or laying method include：
It is circumferentially wound or lay annulate lamella prepreg tape along mould, until being paved with the die surface, form annulate lamella；
In step 2, the laying method of the alternating layer includes：
In the annular layer surface of formation, the first prepreg tape is laid according to the first laying angle, to form the first laying；
The second prepreg tape is laid according to the second laying angle, to form the second laying, wherein first prepreg tape and described the
Two prepreg tapes intertexture in laying is laid, and the first laying angle is different with the second laying angle, and described first
Laying and second laying, which are overlapped, forms the alternating layer.
4. forming method according to claim 3, it is characterised in that the laying method of the alternating layer includes：
In the annular layer surface of formation, the first prepreg tape is laid according to the first laying angle, to form the first laying；
The second prepreg tape is laid according to the second laying angle, to form the second laying；
The 3rd prepreg tape is laid according to the 3rd laying angle, to form the 3rd laying, wherein first prepreg tape, described second
Prepreg tape and the 3rd prepreg tape intertexture in laying are laid, the first laying angle, the second laying angle
Different with the 3rd laying angle, first laying, second laying and the 3rd laying are overlapping to form institute
State alternating layer.
5. forming method according to claim 3, it is characterised in that first prepreg tape and second prepreg tape exist
Intertexture is laid during laying, is comprised the following steps：
(1) first prepreg tape is laid at interval of the first width, until being paved with the die surface, first width is not small
In the bandwidth of first prepreg tape；
(2) second prepreg tape is laid at interval of the second width, until being paved with the die surface, second width is not small
In the bandwidth of second prepreg tape；
(3) in each interval, close to first prepreg tape laid, first prepreg tape is laid, until being paved with
The die surface；
(4) in each interval, close to second prepreg tape laid, second prepreg tape is laid, until being paved with
The die surface；
(5) repeat step (3) and (4), until described in the spacing between the prepreg tape of adjacent two first that has laid is respectively less than
Spacing between the bandwidth of first prepreg tape, two adjacent the second prepreg tapes is respectively less than the bandwidth of second prepreg tape, stops
Only lay.
6. forming method according to claim 3, it is characterised in that first prepreg tape and second prepreg tape exist
Intertexture is laid during laying, is comprised the following steps：
1) first prepreg tape is laid；
2) second prepreg tape is laid；
3) another the first prepreg tape is laid with last the first spaced first width of preimpregnation laid；
4) another the second prepreg tape is laid with last the second spaced second width of preimpregnation laid；
5) it is repeated in step 3) and 4), until being paved with the die surface；
6) in an interval of the first prepreg tape laid, one is laid close to the first prepreg tape laid described in one
The prepreg tape of bar first；
7) in an interval of the second prepreg tape laid, one is laid close to the second prepreg tape laid described in one
The prepreg tape of bar second；
8) then, in another interval of first prepreg tape laid, close to first laid described in one
Prepreg tape lays another the first prepreg tape；
9) in another interval of second prepreg tape laid, close to the second preimpregnation laid described in one
Band, lays another the second prepreg tape；
10) repeat step 8) and 9), until being paved with the die surface；
Repeat step 6) -9) until between adjacent two first prepreg tape that has laid to be smaller than described first pre-
The bandwidth of band is soaked, the distance between two adjacent second prepreg tapes are less than the bandwidth of second prepreg tape, stop paving
Put.
7. forming method according to claim 3, it is characterised in that adjacent two in the same direction of the alternating layer
Between prepreg tape at intervals of 0.5mm-1mm, the annulate lamella prepreg tape is in winding or lay, without taking between two adjacent rings
Connect gapless.
8. forming method according to claim 3, it is characterised in that：
It is circumferentially wound or lay annulate lamella prepreg tape along the mould with first direction in step 1, with second direction edge in step 3
The mould is circumferentially wound or lays another annulate lamella prepreg tape, and the first direction and the second direction are opposite.
9. forming method according to claim 3, it is characterised in that the prepreg that the prepreg tape is used is pre- for carbon fiber
Soak one or more kinds of combinations in material, Aramid Prepreg, glass fibre prepreg.
10. forming method according to claim 3, it is characterised in that the alternating layer is laid by automatic placement technology
Shaping, the annulate lamella is molded by the automatic placement technology or band winding technology.
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| CN107498942A (en) * | 2017-09-01 | 2017-12-22 | 瑞安市联成电器配件有限公司 | The processing method of high intensity shell case |
| CN107891631A (en) * | 2017-11-23 | 2018-04-10 | 航天材料及工艺研究所 | A kind of composite pilotaxitic texture and its laying method |
| CN108314879A (en) * | 2018-03-15 | 2018-07-24 | 浙江大学 | Comprehensive zero expansion composite material laminate in a kind of plane |
| CN108724761A (en) * | 2018-05-07 | 2018-11-02 | 北京宇航系统工程研究所 | A kind of no skinned mesh payload support construction and preparation method thereof |
| CN108995240A (en) * | 2018-06-20 | 2018-12-14 | 航天材料及工艺研究所 | A kind of forming method of composite material tubular component |
| CN109128176A (en) * | 2018-07-06 | 2019-01-04 | 江西洪都航空工业集团有限责任公司 | A kind of high shock resistance composite preparation method |
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