CN105951277B - The preparation method of curved composite structures precast body - Google Patents
The preparation method of curved composite structures precast body Download PDFInfo
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- CN105951277B CN105951277B CN201610504427.4A CN201610504427A CN105951277B CN 105951277 B CN105951277 B CN 105951277B CN 201610504427 A CN201610504427 A CN 201610504427A CN 105951277 B CN105951277 B CN 105951277B
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
- D03D25/005—Three-dimensional woven fabrics
Abstract
The present invention relates to a kind of preparation method of curved composite structures precast body, there are following steps：A, mould is made；B, the longest bus-bar length L2 on longest bus-bar length L1 and the width on the length direction of mould is measured；C, flat and stereo fabric is made；D, flat and stereo fabric is laid on mould；E, the end of a thread at the both ends of weft yarn is pulled in order, and the bus of weft yarn opposing mold width is stretched；F, the end of a thread at the both ends of warp thread is pulled in order, and the bus of warp thread opposing mold length direction is stretched；Bent if g, yarn also has, repeat step e and f, until yarn whole opposing busbars stretch.The beneficial effects of the invention are as follows：It is possible to prevente effectively from conventional curved-surface composite preform forms the phenomenon of penetrability hole because adding, subtracting yarn in fabric thickness direction, interiors of products quality ensure that；The density uniformity of fabric is improved, simplifies moulding process, it is possible to achieve rapid shaping.
Description
Technical field
The present invention relates to a kind of preparation method of curved composite structures precast body.
Background technology
The complex manufacturing technology of existing technology mean camber composite preform, into the Density of obtained product
Lack of homogeneity, interiors of products quality can not meet demands.
The content of the invention
The technical problem to be solved in the present invention is：A kind of preparation method of curved composite structures precast body is provided, simplifies system
Make step, there is provided product quality.
The technical solution adopted for the present invention to solve the technical problems is：A kind of making side of curved composite structures precast body
Method, there are following steps：A, mould is made, mould matches with the inner mold face of curved composite structures precast body to be produced；b、
Longest bus-bar length L1 in this direction is measured on the length direction of mould, this is measured on the width of mould
Longest bus-bar length L2 on direction；C, the flat and stereo fabric formed by warp thread and weft yarns is made, with length direction
On longest bus-bar length L1 and width on longest bus-bar length L2 be flat and stereo fabric cloth length and breadth base
Certain surplus is reserved respectively at warp-wise both ends and broadwise both ends again on plinth；D, by the flat and stereo fabric in step c according to phase
The direction answered snugly is laid on mould as far as possible, and flat and stereo fabric cloth grows, breadth corresponding with the length direction of mould and mould
The width of tool is corresponding；E, pull weft yarn to the other end from one end of the cloth length direction of flat and stereo fabric in order by root
Both ends the end of a thread, or the end of a thread using several adjacent weft yarns as one group of both ends for pulling weft yarn by group is relative by weft yarn
The bus in die width direction stretches, and fixes the end of a thread opposing mold at the both ends of weft yarn after stretching；F, stood in order from plane
The one end in the breadth direction of body fabric pulls the end of a thread at the both ends of warp thread to the other end by root, or with several adjacent warp thread
For the end of a thread at one group of both ends for pulling warp thread by group, the bus of warp thread opposing mold length direction is stretched, will be through after stretching
The end of a thread opposing mold at the both ends of yarn is fixed；G, according to the bending situation of the yarn of flat fabric, bend, repeat if also had
Step e and f, until yarn whole opposing busbars stretch, curved composite structures precast body is formed, above-mentioned steps e and f order can
To exchange.
Further limit, in step c, the end of a thread at the both ends of each one thread is marked, or with adjacent several
One thread is one group, and the end of a thread at the both ends of every group of yarn is marked, waits to draw in order to identify in step e and step f
The end of a thread at the both ends for the yarn dragged.
Further limit, in step e and step f, clamped the end of a thread at the both ends of yarn to be pulled by fixture, so
The bus of yarn opposing mold is stretched by way of pulling back and forth afterwards, by fixture by the end of a thread at the both ends of warp thread after stretching
Opposing mold is fixed.
Further limit, the material of curved composite structures precast body is carbon fiber, quartz glass fibre, silicon carbide fibre,
Boron nitride fiber, alumina fibre, alkali-free glass fibre, high-strength glass fibre, dielectric glass fibre, high-modulus glass fibers
One or more in dimension, basalt fibre, hdpe fiber and aramid fiber.
Further limit, the institutional framework of flat and stereo fabric for 2.5D structures, orthogonal three-dimensional structure or 2.5D additions to
Structure.
Further limit, flat and stereo fabric is woven flat and stereo fabric.
The beneficial effects of the invention are as follows：
1st, it is possible to prevente effectively from conventional curved-surface composite preform is because adding, subtracting yarn, in fabric thickness direction, formation runs through
The phenomenon of property hole, ensure that interiors of products quality；
2nd, the density uniformity of fabric is improved, and fabric further can effectively be controlled by reed using weaving equipment
Uniformity through weft count；
3rd, moulding process is simplified, it is possible to achieve rapid shaping.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples；
Fig. 1 is the main view status architecture schematic diagram of one of which curved composite structures precast body to be produced in the present invention；
Fig. 2 is the profile of the width of one of which curved composite structures precast body to be produced in the present invention；
Fig. 3 is the profile of the length direction of one of which curved composite structures precast body to be produced in the present invention；
Fig. 4 is the easy structure schematic diagram of the flat and stereo fabric of the present invention；
Fig. 5 is the structural representation of the flat and stereo fabric of the 2.5D structures of the present invention；
Wherein, 1. warp thread, 2. weft yarns, 3. the end of a thread.
Embodiment
A kind of preparation method of curved composite structures precast body, has following steps：
A, mould, the inner mold face phase of mould and curved composite structures precast body to be produced as shown in Figure 1,2 and 3 are made
It coincide.
B, longest bus-bar length L1 in this direction is measured on the length direction of mould, in the width of mould
On measure longest bus-bar length L2 in this direction.
C, the flat and stereo fabric being interwoven by warp thread 1 and weft yarn 2 is made, the longest bus-bar length on length direction
Spend on the basis of the cloth length and breadth that the longest bus-bar length L2 on L1 and width is flat and stereo fabric again in warp-wise two
Certain surplus is reserved at end and broadwise both ends respectively, and the surplus is used for as the basis that yarn is pulled in subsequent step.
The end of a thread 3 at the both ends of each one thread is marked simultaneously in manufacturing process, or with several adjacent yarns
Line is one group, and the end of a thread 3 at the both ends of every group of yarn is marked, to be pulled in order to be identified in step e and step f
The end of a thread 3 at the both ends of yarn.
D, the flat and stereo fabric in step c is snugly laid on mould as far as possible according to corresponding direction, plane is stood
It is corresponding that body fabric cloth grows width corresponding with the length direction of mould, breadth and mould.
E, the both ends of weft yarn 2 are pulled from one end of the cloth length direction of flat and stereo fabric to the other end in order by root
The end of a thread 3, or with the end of a thread 3 that adjacent several weft yarns 2 are one group of both ends for pulling weft yarn 2 by group, by the opposing mold of weft yarn 2
The bus of width stretches, and fixes the opposing mold of the end of a thread 3 at the both ends of weft yarn 2 after stretching.
F, the both ends of warp thread 1 are pulled from the one end in the breadth direction of flat and stereo fabric to the other end in order by root
The end of a thread 3, or with the end of a thread 3 that adjacent several warp thread 1 are one group of both ends for pulling warp thread 1 by group, by the opposing mold of warp thread 1
The bus of length direction stretches, and fixes the opposing mold of the end of a thread 3 at the both ends of warp thread 1 after stretching.
G, according to the bending situation of the yarn of flat fabric, bent if also had, repeat step e and f, until yarn is complete
Portion's opposing busbars stretch, and form curved composite structures precast body.
Above-mentioned steps e and f order can exchange.In step e and step f, by fixture by yarn to be pulled
The end of a thread 3 at both ends is clamped, and is then stretched the bus of yarn opposing mold by way of pulling back and forth, passes through fixture after stretching
The opposing mold of the end of a thread 3 at the both ends of warp thread 1 is fixed.
The material of curved composite structures precast body be carbon fiber, quartz glass fibre, silicon carbide fibre, boron nitride fiber,
Alumina fibre, alkali-free glass fibre, high-strength glass fibre, dielectric glass fibre, high-modulus glass fiber, basalt are fine
One or more in dimension, hdpe fiber and aramid fiber.
The institutional framework of flat and stereo fabric is 2.5D structures, orthogonal three-dimensional structure or 2.5D additions to structure.
Flat and stereo fabric is woven flat and stereo fabric.
Exemplified by making curved composite structures precast body as shown in Figure 1,2 and 3, the preparation method of the present invention is entered to advance
One step explanation.
Longest bus-bar length L2 on the width of the curved composite structures precast body is 1700mm, on length direction
Longest bus-bar length L1 is 2200mm, and prefabricated body thickness is 11mm, and precast body uses low-angle 2.5D structures, fiber volume fraction
For 40%~43%.
A kind of preparation method of curved composite structures precast body, it is characterized in that：With following steps：
A, mould is made, mould matches with the inner mold face of curved composite structures precast body to be produced.
B, the longest bus-bar length L1 measured on the length direction of mould in this direction is 2200mm, in mould
The longest bus-bar length L2 measured on width in this direction is 1700mm.
C, the woven flat and stereo fabric of 2.5D structures being interwoven by weaving equipment weaving by warp thread 1 and weft yarn 2,
Cloth using the longest bus-bar length L2 on the longest bus-bar length L1 and width on length direction as flat and stereo fabric is grown
With breadth basis again warp-wise both ends and broadwise both ends respectively reserve 60mm surplus, cloth length=L1+60mm × 2, breadth=
L2+60mm × 2, the woven flat and stereo is calculated for 40%~43% requirement according to product thickness 11mm and fiber volume fraction
The number of plies of fabric is 15 layers, and columns is 1584 row.Rower is entered to the end of a thread 3 at the both ends of each one thread simultaneously in weaving process
Note, or using 3 adjacent one threads as one group, the end of a thread 3 at the both ends of every group of yarn is marked, in order to step e with
The end of a thread 3 at the both ends of yarn to be pulled is identified in step f.
D, the flat and stereo fabric in step c is snugly laid on mould as far as possible according to corresponding direction, plane is stood
It is corresponding that body fabric cloth grows width corresponding with the length direction of mould, breadth and mould.Now part warp thread 1 and weft yarn 2
It is likely to be at case of bending.
E, will wait to pull by fixture from one end of the cloth length direction of flat and stereo fabric to the other end in order by root
The end of a thread 3 at both ends of weft yarn 2 clamp, or with 3 adjacent weft yarns 2 be one group by group by fixture by latitude to be pulled
The end of a thread 3 at the both ends of yarn 2 is clamped, and is then stretched the bus of the opposing mold width of weft yarn 2 by way of pulling back and forth,
The end of a thread 3 at the both ends of weft yarn 2 is fixed by fixture opposing mold after stretching.
F, will wait to pull by fixture from the one end in the breadth direction of flat and stereo fabric to the other end in order by root
The end of a thread 3 at both ends of warp thread 1 clamp, or with 3 adjacent warp thread 1 be one group by group by fixture by warp to be pulled
The end of a thread 3 at the both ends of yarn 1 is clamped, and is then stretched the bus of the opposing mold length direction of warp thread 1 by way of pulling back and forth,
The end of a thread 3 at the both ends of warp thread 1 is fixed by fixture opposing mold after stretching.
G, according to the bending situation of the yarn of flat fabric, bent if also had, repeat step e and f, until yarn is complete
Portion's opposing busbars stretch, and form curved composite structures precast body.
Claims (6)
1. a kind of preparation method of curved composite structures precast body, it is characterized in that：With following steps：
A, mould is made, described mould matches with the inner mold face of curved composite structures precast body to be produced；
B, longest bus-bar length L1 in this direction is measured on the length direction of mould, is surveyed on the width of mould
Measure longest bus-bar length L2 in this direction；
C, the flat and stereo fabric being interwoven by warp thread (1) and weft yarn (2) is made, the longest bus-bar length on length direction
Spend on the basis of the cloth length and breadth that the longest bus-bar length L2 on L1 and width is flat and stereo fabric again in warp-wise two
Certain surplus is reserved at end and broadwise both ends respectively；
D, the flat and stereo fabric in step c is snugly laid on mould as far as possible according to corresponding direction, flat and stereo is knitted
It is corresponding that thing cloth grows width corresponding with the length direction of mould, breadth and mould；
E, the line at the both ends of weft yarn (2) is pulled from one end of the cloth length direction of flat and stereo fabric to the other end in order by root
Head (3), or with the end of a thread (3) that adjacent several weft yarns (2) are one group of both ends for pulling weft yarn (2) by group, by weft yarn (2)
The bus of opposing mold width stretches, and fixes the end of a thread (3) opposing mold at the both ends of weft yarn (2) after stretching；
F, the line at the both ends of warp thread (1) is pulled from the one end in the breadth direction of flat and stereo fabric to the other end in order by root
Head (3), or with the end of a thread (3) that adjacent several warp thread (1) are one group of both ends for pulling warp thread (1) by group, by warp thread (1)
The bus of opposing mold length direction stretches, and fixes the end of a thread (3) opposing mold at the both ends of warp thread (1) after stretching；
G, according to the bending situation of the yarn of flat and stereo fabric, bent if yarn opposing busbars also have, repeat step e and
F, until yarn whole opposing busbars stretch, curved composite structures precast body is formed,
Above-mentioned steps e and f order can exchange.
2. the preparation method of curved composite structures precast body according to claim 1, it is characterized in that：In step c, to every
The end of a thread (3) at the both ends of one one thread is marked, or using adjacent several one threads as one group, to the both ends of every group of yarn
The end of a thread (3) is marked, in order to identify the end of a thread (3) at the both ends of yarn to be pulled in step e and step f.
3. the preparation method of curved composite structures precast body according to claim 1, it is characterized in that：In step e and step f
In, the end of a thread (3) at the both ends of yarn to be pulled is clamped by fixture, it is then by way of pulling back and forth that yarn is relative
The bus of mould stretches, and is fixed the end of a thread (3) opposing mold at the both ends of warp thread (1) by fixture after stretching.
4. the preparation method of curved composite structures precast body according to claim 1, it is characterized in that：Described curved surface is compound
The material of prefabricated body is carbon fiber, quartz glass fibre, silicon carbide fibre, boron nitride fiber, alumina fibre, alkali-free glass
Glass fiber, high-strength glass fibre, dielectric glass fibre, high-modulus glass fiber, basalt fibre, hdpe fiber
With the one or more in aramid fiber.
5. the preparation method of curved composite structures precast body according to claim 1, it is characterized in that：Described flat and stereo
The institutional framework of fabric is 2.5D structures, orthogonal three-dimensional structure or 2.5D additions to structure.
6. the preparation method of curved composite structures precast body according to claim 1, it is characterized in that：Described flat and stereo
Fabric is woven flat and stereo fabric.
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| CN106637592A (en) * | 2016-11-18 | 2017-05-10 | 王财农 | High-strength fabric |
| CN108591335B (en) * | 2018-03-25 | 2020-09-25 | 哈尔滨工程大学 | Metal woven mesh buffer structure with auxetic characteristic and preparation method thereof |
| CN110004558A (en) * | 2019-04-15 | 2019-07-12 | 苏州赛力菲陶纤有限公司 | A kind of preparation method of heatproof substrate |
| CN113858650A (en) * | 2020-06-30 | 2021-12-31 | 中国航发商用航空发动机有限责任公司 | Method for manufacturing composite annular parts |
| CN112680861B (en) * | 2020-12-11 | 2022-07-15 | 江苏恒力化纤股份有限公司 | Police helmet made of composite material and preparation method thereof |
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| CN103603124A (en) * | 2013-11-29 | 2014-02-26 | 天津工业大学 | Oblique crossing normal reinforcing 2.5D fabric and weaving method thereof |
| CN104818567A (en) * | 2015-04-30 | 2015-08-05 | 中材科技股份有限公司 | Synchronous heterodromous three-dimensional fabric of 2.5D braided structure and preparation method thereof |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0426878A1 (en) * | 1989-05-26 | 1991-05-15 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Three-dimensional textile and method of producing the same |
| CN103061003A (en) * | 2012-12-29 | 2013-04-24 | 中材科技股份有限公司 | Novel structure three-dimensional woolen fabric and weaving method thereof |
| CN103290601A (en) * | 2013-05-30 | 2013-09-11 | 中材科技股份有限公司 | Angle-adjustable 2.5D fabric with reinforcement normal yarns and method for weaving angle-adjustable 2.5D fabric |
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