CN107090660B - A kind of composite material braiding fill method - Google Patents
A kind of composite material braiding fill method Download PDFInfo
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- CN107090660B CN107090660B CN201710152919.6A CN201710152919A CN107090660B CN 107090660 B CN107090660 B CN 107090660B CN 201710152919 A CN201710152919 A CN 201710152919A CN 107090660 B CN107090660 B CN 107090660B
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- braiding
- vacuum
- filling tape
- filling
- weaves
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
- D04C1/06—Braid or lace serving particular purposes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C5/00—Shaping or stretching of tubular fabrics upon cores or internal frames
- D06C5/005—Shaping or stretching of tubular fabrics upon cores or internal frames of articles, e.g. stockings
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
- Woven Fabrics (AREA)
Abstract
The present invention relates to a kind of composite materials to weave fill method, pass through corner gap filling area S1, it calculates and needs to weave outer radius for R1, inside radius is the braiding filling tape of the cylindrical structure of R2, in braiding, presetting technology and the setting process by braiding filling tape, braiding filling tape identical with corner gap is finally obtained.The present invention is by accurately knitting out the long-pending braiding filling tape of respective cross-section according to the area size of fill area, improve the connecting line, overall permanence and structural intergrity of structural member, prevent packing material shaped component corner regions stress from concentrating, and pass through the method for hot briquetting in a vacuum, higher briquetting pressure can be obtained, preparation mechanical property preferably weaves filling tape, enhances the intensity and internal stabilization of filling core material.
Description
Technical field
The invention belongs to technical field of composite preparation more particularly to a kind of composite material to weave fill method.
Background technique
Composite liquid forming technique (LCM) technology can not only produce large-scale composite material product due to having, but also can
To prepare various miniature precision composite products, and LCM product is high with intensity and performance reliability, moulding process is simple,
High production efficiency, dimensional accuracy are high, and environmental protection and manufacturing cost are low, and become one of the technique competitively studied both at home and abroad.It is multiple
Application in condensation material manufacturing process is also more and more, and the shape of product of manufacture also becomes increasingly complex, and integration degree is also more next
It is higher, but composite plys structure design due to, in composite material manufacturing process there are a large amount of corner,
Gap need to be filled using fiber.
Patent No. CN105619828A, applying date 2014-10-28 disclose a kind of corner i-shaped beams R sky
Gap carbon twisted filament fill method, the fill method include the following steps: step 1, calculate carbon twisted filament cross-sectional area according to formula
With the width of carbon twisted filament, 1: Δ S=(r+h1/2) * (2r+h1)-π * (r+h1/2) 2/2,2:L=Δ S/h, in formula: r is " work "
The R angular radius of font beam；H1 is the thickness of " I " fonts beam；L is the width for filling carbon twisted filament；Δ S is the fill surface at the angle R
Product；H is the thickness in monolayer for filling carbon twisted filament；Step 2, according to carbon twisted filament outer dimension at the angle R of " I " fonts beam, using inverse
Carbon twisted filament digital-to-analogue is established to modeling, and manufactures mold；Step 3, using mold by carbon twisted filament forming and hardening；Step 4 will form
Good carbon twisted filament is placed on the angle the R gap that the left and right web that " I " fonts beam has molded is formed, curing molding.
Above-mentioned patent is filled into " work " using the molding carbon twisted filament of shaping mould by the quantization angle R gap carbon twisted filament dosage
Then font beam " R " corner gap carries out curing molding, guarantee the surface quality at the angle R, improve stable product quality
Property.But it is placed in tri filling area after carrying out pre-molding inside mold due to filling core material, so that packing material is formed structure
Part corner regions stress is concentrated, and the intensity of filling core material is reduced, and may be such that the filling tape of fill area becomes in construction processing
Shape is too big.
Summary of the invention
It is an object of the invention to overcome the above-mentioned problems in the prior art, a kind of composite material braiding filling is provided
Method, the method improve connecting line, overall permanence and the structural intergrity of fill area, avoid packing material shaped component corner
Area's stress is concentrated, and the intensity and internal stabilization of filling core material are enhanced.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of preparation method of composite material braiding filling tape, specific step is as follows for the preparation method:
Step 1 calculates the exradius R2 of braiding filling tape:
S1=π (R2-R1) 2 --- (one)
R2=+ R1 --- (two)
In formula: S1 is corner gap filling area；R1 is braiding mode radius；
Step 2 weaves the braiding of filling tape: composite material is woven in the appearance of braiding mould according to standard weaving
Face, is prepared the braiding filling tape of integral barrel structure, and weaving filling tape is multi-layer braided band, exradius R2, interior
Radius of circle equal with braiding mode radius is R1；
Step 3 weaves the pre-setting of filling tape: shaping material being first sprayed on to the surface of braiding filling tape, then will braiding
Filling tape is packed into preheating in vacuum sealing bag, obtains the braiding filling tape of pre-setting；
Step 4 weaves the sizing of filling tape: first the braiding filling tape of pre-setting being put into shaper, then will sizing
Mold is packed into vacuum plant, by the braiding filling tape being formed is vacuumized and heated in vacuum plant.
Braiding yarn and braiding between centers angle β are calculated from the formula in the weaving:
β=tan ﹣ 1R1
In formula: ω b is yarn angular speed；To weave mould movement velocity.
The vacuum plant includes vacuum bag, vacuum nozzle and template, and the vacuum bag connect to form one very with formwork seal
Pneumatics chamber, the vacuum pressure chamber are provided with vacuum pump outside, and the vacuum pump connects vacuum nozzle, and the vacuum nozzle is mounted on vacuum bag
On, place shaper in the template, successively laying has release cloth, non-porous release film and airfelt on the shaper.
The operating method for vacuumizing and heating in the vacuum plant includes；Chamber is pressed to vacuumize vacuum by vacuum pump,
After vacuum presses the intracavitary vacuum degree for reaching setting, template is heated, the temperature until reaching the braiding initial fixed line of filling tape
Afterwards, start to carry out the slow solidification under independent vacuum pressure chamber.
The material of the braiding filling tape is fiber.
The shaping material uses setting agent solvent or toughener solvent.
Using the present invention has the advantages that
1, by accurately knitting out the braiding filling tape of respective cross-section product according to the area size of fill area, structure is improved
Connecting line, overall permanence and the structural intergrity of part prevent packing material shaped component corner regions stress from concentrating, and by true
The method of aerial hot briquetting, can obtain higher briquetting pressure, and preparation mechanical property preferably weaves filling tape, enhances
Fill the intensity and internal stabilization of core material.
2, by the setting of speed in the size and braider of braiding mode radius, adjustment weaves braid over braid inside filling tape
Angle direction enhances internal stability to control the internal soundness of braiding filling tape.
3, release cloth, non-porous release film and airfelt are arranged by setting vacuum plant, weave filling tape surfacing light
Bright, cleanliness is high, product physical mechanical property is excellent, percent thermal shrinkage is low, tensile resistance degree is preferable.
4, by solidifying after heating under vacuum conditions, the fusing point of braiding filling tape is reduced, heating temperature is reduced and adds
It is the hot time, energy saving, while reducing the generation of bubble.
5, by using Fiber Materials, axial strength and modulus are high, no creep, and fatigue durability is good.
6, by setting agent solvent or toughener solvent, the sizing after braiding filling tape heats is improved, prevents braiding from filling out
It deforms after filling band solidification.
Detailed description of the invention
Fig. 1 is component corner gap filling of the present invention area schematic diagram；
Fig. 2 is present invention braiding filling tape schematic cross-section；
Fig. 3 is present invention braiding yarn and braiding between centers angle schematic diagram；
Fig. 4 is the pre-setting structural schematic diagram of present invention braiding filling tape；
Fig. 5 is shaper structural schematic diagram of the present invention；
Fig. 6 is vacuum apparatus designs schematic diagram of the present invention；
Fig. 7 is the industrial braiding structure schematic diagram of the present invention；
Marked in the figure: 1, braiding filling tape, 2, braiding mould, 3, vacuum sealing bag, 4, shaper, 5, vacuum nozzle, 6, template,
7, airfelt, 8, non-porous release film, 9, release cloth, 10, vacuum bag.
Specific embodiment
Following further describes the present invention with reference to the drawings:
Embodiment 1
As shown in Figures 1 to 6, a kind of preparation method of composite material braiding filling tape, it is characterised in that: the preparation side
Specific step is as follows for method:
Step 1 calculates the exradius R2 of braiding filling tape 1:
S1=π (R2-R1) 2 --- (one)
R2=+ R1 --- (two)
In formula: S1 is corner gap filling area；R1 is braiding 2 radius of mould；
Step 2 weaves the braiding of filling tape 1: composite material being woven in the outer of braiding mould 2 according to standard weaving
The braiding filling tape 1 of integral barrel structure is prepared in surface, and weaving filling tape 1 is multi-layer braided band, and exradius is
R2, inner circle radius equal with braiding 2 radius of mould is R1；
Step 3 weaves the pre-setting of filling tape 1: shaping material being first sprayed on to the surface of braiding filling tape 1, then will be compiled
It knits filling tape 1 and is packed into preheating in vacuum sealing bag 3, obtain the braiding filling tape 1 of pre-setting；
Step 4 weaves the sizing of filling tape 1: first the braiding filling tape 1 of pre-setting being put into shaper 4, then will
Shaper 4 is packed into vacuum plant, by the braiding filling tape 1 being formed is vacuumized and heated in vacuum plant.
By establishing the threedimensional model in component corner gap filling area, determines that its area is S1, weave the section of filling tape
It is all S1 that product is identical as the area in corner gap filling area, the outer diameter R1 for weaving mould be it is known that the inside radius of braiding filling tape with
The radius R1 for weaving mould is equal, and the outer radius R2 of braiding filling tape is calculated according to 1=π of formula S (R2-R1) 2, is set in braiding
The braiding mould of standby upper installation outer diameter R1, weaves multi-layer braided filling tape on braiding mould, obtains integrally-built cylinder-shaped braiding
Filling tape, it is R2 that the inside radius for weaving filling tape, which is R1 outer radius, will be coated with shaping material braiding filling tape and is packed into vacuum sealing bag
Interior preheating reduces the fusing point of braiding filling tape, reduces preheating temperature, improves preheating speed, and the braiding for obtaining pre-setting is filled out
It fills, finally the braiding filling tape of pre-setting is inserted in molding die, molding die can be obtained more by heating in a vacuum
High briquetting pressure, preparation mechanical property preferably weave filling tape, and the final shaping obtains intensity height and internal stable volume
Knit filling tape.
Embodiment 2
As shown in Figures 1 to 6, a kind of preparation method of composite material braiding filling tape, it is characterised in that: the preparation side
Specific step is as follows for method:
Step 1 calculates the exradius R2 of braiding filling tape 1:
S1=π (R2-R1) 2 --- (one)
R2=+ R1 --- (two)
In formula: S1 is corner gap filling area；R1 is braiding 2 radius of mould；
Step 2 weaves the braiding of filling tape 1: composite material being woven in the outer of braiding mould 2 according to standard weaving
The braiding filling tape 1 of integral barrel structure is prepared in surface, and weaving filling tape 1 is multi-layer braided band, and exradius is
R2, inner circle radius equal with braiding 2 radius of mould is R1；
Step 3 weaves the pre-setting of filling tape 1: shaping material being first sprayed on to the surface of braiding filling tape 1, then will be compiled
It knits filling tape 1 and is packed into preheating in vacuum sealing bag 3, obtain the braiding filling tape 1 of pre-setting；
Step 4 weaves the sizing of filling tape 1: first the braiding filling tape 1 of pre-setting being put into shaper 4, then will
Shaper 4 is packed into vacuum plant, by the braiding filling tape 1 being formed is vacuumized and heated in vacuum plant.
Braiding yarn and braiding between centers angle β are calculated from the formula in the weaving:
β=tan ﹣ 1R1
In formula: ω b is yarn angular speed；To weave mould movement velocity.
By establishing the threedimensional model in component corner gap filling area, determines that its area is S1, weave the section of filling tape
It is all S1 that product is identical as the area in corner gap filling area, the outer diameter R1 for weaving mould be it is known that the inside radius of braiding filling tape with
The radius R1 for weaving mould is equal, and the outer radius R2 of braiding filling tape is calculated according to 1=π of formula S (R2-R1) 2, is set in braiding
The braiding mould of standby upper installation outer diameter R1, weaves multi-layer braided filling tape on braiding mould, obtains integrally-built cylinder-shaped braiding
Filling tape, it is R2 that the inside radius for weaving filling tape, which is R1 outer radius, will be coated with shaping material braiding filling tape and is packed into vacuum sealing bag
Interior preheating reduces the fusing point of braiding filling tape, reduces preheating temperature, improves preheating speed, and the braiding for obtaining pre-setting is filled out
It fills, finally the braiding filling tape of pre-setting is inserted in molding die, molding die can be obtained more by heating in a vacuum
High briquetting pressure, preparation mechanical property preferably weave filling tape, and the final shaping obtains intensity height and internal stable volume
Knit filling tape.
In order to control the internal soundness of braiding filling tape, enhance internal stability, it is known that braiding mode radius R1, pass through
The yarn angular velocity omega b and braiding mould movement velocity Va on braider are adjusted, suitable yarn and braiding between centers angle β is obtained.
Embodiment 3
As shown in Figures 1 to 6, a kind of preparation method of composite material braiding filling tape, the specific step of the preparation method
It is rapid as follows:
Step 1 calculates the exradius R2 of braiding filling tape:
S1=π (R2-R1) 2 --- (1)
R2=+ R1 --- (2)
In formula: S1 is corner gap filling area；R1 is braiding mode radius；
Step 2 weaves the braiding of filling tape: composite material is woven in the appearance of braiding mould according to standard weaving
Face, is prepared the braiding filling tape of integral barrel structure, and weaving filling tape is multi-layer braided band, exradius R2, interior
Radius of circle equal with braiding mode radius is R1；
Step 3 weaves the pre-setting of filling tape: shaping material being first sprayed on to the surface of braiding filling tape, then will braiding
Filling tape is packed into preheating in vacuum sealing bag, obtains the braiding filling tape of pre-setting；
Step 4 weaves the sizing of filling tape: first the braiding filling tape of pre-setting being put into shaper, then will sizing
Mold is packed into vacuum plant, by the braiding filling tape being formed is vacuumized and heated in vacuum plant.
Braiding yarn and braiding between centers angle β are calculated from the formula in the weaving:
β=tan ﹣ 1R1
In formula: ω b is yarn angular speed；To weave mould movement velocity.
The vacuum plant includes vacuum bag 10, vacuum nozzle 5 and template 6, and the vacuum bag 10 is tightly connected shape with template 6
Chamber is pressed at a vacuum, vacuum pump is provided with outside the vacuum pressure chamber, the vacuum pump connects vacuum nozzle 5, and the vacuum nozzle 5 is installed
On vacuum bag 10, shaper 4 is placed in the template 6, on the shaper 4 successively laying have release cloth 9, it is non-porous every
From film 8 and airfelt 7.
The operating method for vacuumizing and heating in the vacuum plant includes；Chamber is pressed to vacuumize vacuum by vacuum pump,
After vacuum presses the intracavitary vacuum degree for reaching setting, template is heated, the temperature until reaching the braiding initial fixed line of filling tape 1
Afterwards, start to carry out the slow solidification under independent vacuum pressure chamber.
The material of the braiding filling tape 1 is fiber.
The shaping material uses setting agent solvent or toughener solvent.
By establishing the threedimensional model in component corner gap filling area, determines that its area is S1, weave the section of filling tape
It is all S1 that product is identical as the area in corner gap filling area, the outer diameter R1 for weaving mould be it is known that the inside radius of braiding filling tape with
The radius R1 for weaving mould is equal, and the outer radius R2 of braiding filling tape is calculated according to 1=π of formula S (R2-R1) 2, is set in braiding
The braiding mould of standby upper installation outer diameter R1, weaves multi-layer braided filling tape on braiding mould, obtains integrally-built cylinder-shaped braiding
Filling tape, it is R2 that the inside radius for weaving filling tape, which is R1 outer radius, will be coated with shaping material braiding filling tape and is packed into vacuum sealing bag
Interior preheating reduces the fusing point of braiding filling tape, reduces preheating temperature, improves preheating speed, and the braiding for obtaining pre-setting is filled out
It fills, finally the braiding filling tape of pre-setting is inserted in molding die, molding die can be obtained more by heating in a vacuum
High briquetting pressure, preparation mechanical property preferably weave filling tape, and the final shaping obtains intensity height and internal stable volume
Knit filling tape.
In order to control the internal soundness of braiding filling tape, enhance internal stability, it is known that braiding mode radius R1, pass through
The yarn angular velocity omega b and braiding mould movement velocity Va on braider are adjusted, suitable yarn and braiding between centers angle β is obtained.
By vacuum pump to vacuum press chamber vacuumize after heat, vacuum pressure it is intracavitary have release cloth, non-porous release film and
Airfelt, after braiding filling tape molding, release cloth prevents from mutually gluing between mold and template, conveniently stripped, guarantees mold and template
Surface is smooth, and non-porous release film physical mechanical property is excellent, strong adsorption, tensile resistance degree are preferable, and airfelt guarantees braiding filling
Air in band can effectively be discharged, this vacuum plant reduces the fusing point of braiding filling tape, when reducing heating temperature and heating
Between, it is energy saving, while reducing the generation of bubble.
It weaves filling tape and uses Fiber Materials, axial strength and modulus are high, no creep, and fatigue durability is good.
Setting agent solvent or toughener solvent, the sizing after improving braiding filling tape heating, prevent braiding filling tape solid
It deforms after change.
The specific embodiment of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application protection scope therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, under the premise of not departing from technical scheme design, various modifications and improvements can be made, these belong to this
The protection scope of application.
Claims (6)
1. a kind of composite material weaves fill method, it is characterised in that: specific step is as follows for the preparation method:
Step 1 calculates the exradius R2 of braiding filling tape (1):
S1=π (R2-R1) 2 --- (one)
R2=+ R1 --- (two)
In formula: S1 is corner gap filling area；R1 is braiding mould (2) radius；
Step 2 weaves the braiding of filling tape (1): composite material being woven in the outer of braiding mould (2) according to standard weaving
The braiding filling tape (1) of integral barrel structure is prepared in surface, and weaving filling tape (1) is multi-layer braided band, exradius
For R2, inner circle radius equal with braiding mould (2) radius is R1；
Step 3 weaves the pre-setting of filling tape (1): shaping material being first sprayed on to the surface of braiding filling tape (1), then will be compiled
It knits filling tape (1) and is packed into preheating in vacuum sealing bag (3), obtain the braiding filling tape (1) of pre-setting；
Step 4 weaves the sizing of filling tape (1): first the braiding filling tape (1) of pre-setting being put into shaper (4), then
Shaper (4) are packed into vacuum plant, by the braiding filling tape being formed is vacuumized and heated in vacuum plant
(1).
2. a kind of composite material as described in claim 1 weaves fill method, it is characterised in that: basis in the weaving
Formula calculates braiding yarn and braiding between centers angle β:
β=tan ﹣ 1R1
In formula: ω b is yarn angular speed；To weave mould movement velocity.
3. a kind of composite material as described in claim 1 weaves fill method, it is characterised in that: the vacuum plant includes
Vacuum bag (10), vacuum nozzle (5) and template (6), the vacuum bag (10) and template (6) are tightly connected and form vacuum pressure chamber,
It is provided with vacuum pump outside the vacuum pressure chamber, the vacuum pump connects vacuum nozzle (5), and the vacuum nozzle (5) is mounted on vacuum bag
(10) on, shaper (4) are placed on the template (6), successively laying has release cloth (9), non-porous on the shaper (4)
Isolation film (8) and airfelt (7).
4. a kind of composite material as claimed in claim 3 weaves fill method, it is characterised in that: taken out in the vacuum plant true
It is empty to include with operating method that is heating；Chamber is pressed to vacuumize vacuum by vacuum pump, vacuum presses the intracavitary vacuum degree for reaching setting
Afterwards, template is heated, after reaching the temperature of the initial fixed line of braiding filling tape (1), starts to carry out independent vacuum pressure chamber
Under slow solidification.
5. a kind of composite material as claimed in claim 4 weaves fill method, it is characterised in that: the braiding filling tape (1)
Material be fiber.
6. a kind of composite material as described in claim 1 weaves fill method, it is characterised in that: the shaping material is using fixed
Type agent solvent or toughener solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152919.6A CN107090660B (en) | 2017-03-15 | 2017-03-15 | A kind of composite material braiding fill method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152919.6A CN107090660B (en) | 2017-03-15 | 2017-03-15 | A kind of composite material braiding fill method |
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| CN107090660A CN107090660A (en) | 2017-08-25 |
| CN107090660B true CN107090660B (en) | 2019-02-22 |
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| CN201710152919.6A Active CN107090660B (en) | 2017-03-15 | 2017-03-15 | A kind of composite material braiding fill method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638125B (en) * | 2021-08-03 | 2022-12-06 | 浙江理工大学 | Method for manufacturing warp knitting machine guide bar through co-curing of annular braided fabric and foam mandrel |
| CN114525622A (en) * | 2022-01-26 | 2022-05-24 | 江苏亨睿航空工业有限公司 | Method for determining stable knitting position of two-dimensional tubular carbon fiber braided fabric |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06294051A (en) * | 1993-02-08 | 1994-10-21 | Murata Mach Ltd | Braided rope structure |
| CN102707373A (en) * | 2010-12-10 | 2012-10-03 | 中国航空工业集团公司北京航空材料研究院 | Composite-material braided prefabricated filling belt and preparation method of composite-material braided prefabricated filling belt |
| CN105619828A (en) * | 2014-10-28 | 2016-06-01 | 哈尔滨飞机工业集团有限责任公司 | Twisted carbon filling method for gaps of R corners of I-shaped beam |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8551591B2 (en) * | 2004-12-20 | 2013-10-08 | Albany Engineered Composites, Inc. | Conformable braid |
-
2017
- 2017-03-15 CN CN201710152919.6A patent/CN107090660B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06294051A (en) * | 1993-02-08 | 1994-10-21 | Murata Mach Ltd | Braided rope structure |
| CN102707373A (en) * | 2010-12-10 | 2012-10-03 | 中国航空工业集团公司北京航空材料研究院 | Composite-material braided prefabricated filling belt and preparation method of composite-material braided prefabricated filling belt |
| CN105619828A (en) * | 2014-10-28 | 2016-06-01 | 哈尔滨飞机工业集团有限责任公司 | Twisted carbon filling method for gaps of R corners of I-shaped beam |
Non-Patent Citations (1)
| Title |
|---|
| 三维间隔连体织物复合材料研究进展;王志才 等;《化工新型材料》;20110430;第39卷(第4期);18-21 |
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