CN102926102B - Composite material platform floor with netty three-dimensional whole multidirectional linking and weaving structure and preparation method of composite material platform floor - Google Patents
Composite material platform floor with netty three-dimensional whole multidirectional linking and weaving structure and preparation method of composite material platform floor Download PDFInfo
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- CN102926102B CN102926102B CN201210387135.9A CN201210387135A CN102926102B CN 102926102 B CN102926102 B CN 102926102B CN 201210387135 A CN201210387135 A CN 201210387135A CN 102926102 B CN102926102 B CN 102926102B
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Abstract
The invention relates to a composite material platform floor with a netty three-dimensional whole multidirectional linking and weaving structure and a preparation method of the composite material platform floor. The platform floor provided by the invention comprises a knitting yarn system, wherein the knitting yarn system is mutually woven by a three-dimensional weaving movement law according to a four-step process. The composite material platform floor is characterized by further comprising seven yarn systems which penetrate through a workpiece along the x direction, the y direction and the z direction, wherein different yarn systems are mutually interlinked and woven according to different weaving laws to form into a compact three-dimensional whole network structure. The preparation method provided by the invention comprises the following steps of: 1) designing a fabricated part; 2) hanging a wire and winding; 3) weaving (comprising 16 weaving steps); 4) forming in a tightening way; and 5) carrying out compound curing. The composite material platform floor provided by the invention is better in globality, the fiber volume content can be obviously increased, the composite material platform floor is better and reasonable in mechanical property, the performance in the composite material platform floor can be obviously increased, and the composite material platform floor is better in multi-functional characteristic. The composite material platform floor is applicable to a locomotive of an aerodynamic aerotrain with stimulated wings and each compartment.
Description
Technical field
The present invention relates to a kind of composite compartment base plate and manufacture method thereof, be particularly related to composite compartment base plate and the manufacture method thereof of the multidirectional interlocking stitches structure of a kind of network-like three-dimension integrally, and be applied to imitating in the locomotive and each joint compartment of air force aerotrain of wing, belong to engineering material preparation field.
Background technology
Recently, (the Chinese patent: 201110209112.4) proposed the air force aerotrain with imitative wing, the top in the locomotive of this train and every joint compartment is separately installed with the imitative wing of the wing structure of imitated aircraft such as Jiang Lei.By producing upper lifting force with the airflow function of train relative motion in imitative wing structure, thereby reduce the pressure of train to rail.Because compartment part has occupied the main weight of modern times with the air force aerotrain car body of imitative wing, therefore, be badly in need of solving the lightweight problem of carriage body construction.Adopting advanced light composite material preparation is one of key technology with the platform floor of the air force aerotrain of imitative wing.
Three-dimension integrally braiding technology is a kind of fabric technology growing up the eighties in 20th century, adopt the D braided composites of this technology development, overcome the fatal shortcoming of the easy layering of traditional laminated composite, kept the globality of composite element load metamorphism, and have that specific strength is high, shock resistance, resistance to ablation, performance can design and be easy to the advantages such as one-shot forming complex configuration.
At present, three-dimension integrally braiding technology is take four step rule 3 D weaving technique as main, and four step rule weaving can include two yarn systems, i.e. knitting yarn wire system and axle yarn system (BSA).When product cross section is the combination of rectangle or rectangle, as " work " type beam, " I " type beam, " L " type beam, box type beam etc., braiding yarn by square capable × cross sectional shape that the mode of row is arranged in product weaves, this braid method is called square and weaves; When product cross section is circle or annular, braiding yarn by round hoop capable × cross sectional shape that the mode of radial alignment is arranged in product weaves, this braid method is called tubular braiding.In braiding process, machine is pressed the motion of ranks over-over mode, four steps form a machine cycles, braiding yarn is according to certain design rule motion, axle yarn is along braiding axle to motionless, do not participate in braiding, form so a not stratified three-dimensional four-way (not containing axle yarn) or three-dimensional five to (containing axle yarn) braided structure.Recently, for improving the in-plane mechanical properties of woven composite, developed three-dimensional six to three-dimensional seven to braided structure, this class formation is take three-dimensional five to braided structure as basis, adds mutually perpendicular horizontal weft systems (the 6th component) and longitudinal weft systems (the 7th component) to weave and form in the face perpendicular to weaving forming direction.Although three-dimensional six to increasing to the in-plane mechanical properties of braided structure composite with three-dimensional seven, due to the weft yarn limited amount increasing, make the fiber volume fraction increase of direction in face limited, therefore, the raising of in-plane mechanical properties is restricted; In addition, due to horizontal weft yarn and longitudinally weft yarn be just clipped in uniformly between braiding yarn, all do not participate in weaving, inplane shear performance is low, bending resistance, antitorque and shock resistance is also poor; Therefore, need to do further improvement to performances such as anti-shear performance in the face of existing braided structure composite, bending resistance, antitorque, shock resistances, to meet the special requirement of the fields such as bullet train to material property.
Summary of the invention
For the deficiencies in the prior art, the technical problem to be solved in the present invention is: propose composite compartment base plate of the multidirectional interlocking stitches structure of a kind of network-like three-dimension integrally and preparation method thereof, and be applied to the air force aerotrain with imitative wing.This compartment bottom plate structure thereof has eight groups of yarn systems that run through three directions of product x, y, z, and between yarn system, does not form fine and close three-dimension integrally network structure according to different pilotaxitic texture mutual linking braidings on the same group.This preparation method is take three-dimension integrally braiding and the woven technology of three-dimension integrally as basis, technique simple and stable, and workable, production cost is low, and practicality is wide.
The technical scheme that the present invention solves described composite technology problem is as follows:
The composite compartment base plate of the multidirectional interlocking stitches structure of a kind of network-like three-dimension integrally of the present invention's design, this platform floor adopts three-dimension integrally braiding technology and three-dimension integrally weaving to combine, and completes according to 16 step weave woven steps.It is characterized in that: this compartment bottom plate structure thereof three-dimensional four-way different from the past, three-dimensional five to, three-dimensional six to, three-dimensional seven to braided structure, comprise eight groups of yarn systems that run through three directions of product x, y, z, between eight groups of yarn systems, form fine and close three-dimension integrally network structure according to different pilotaxitic texture mutual linking braidings.
Further feature of the present invention is that the composite compartment backplane applications of the described multidirectional interlocking stitches structure of network-like three-dimension integrally is in the locomotive and each joint compartment of the air force aerotrain with imitative wing.
Feature of the present invention is also: the length of described composite compartment base plate appearance and size is 0-28 rice, and width is 0-3.5 rice, and thickness is 0-0.05 rice.
Feature of the present invention is also: eight groups of described yarn systems, are respectively knitting yarn wire system, axle yarn system, laterally fill weft systems, longitudinally fill weft systems ,+45 degree and fill weft systems ,-45 degree and fill weft systems, laterally interweave weft systems, the longitudinal weft systems that interweaves.
Feature of the present invention is also: between different yarns system, have different yarns interwoven rules.Knitting yarn wire system and axle yarn system by 3 D weaving machine machine chassis to take yarn device entrained, the characteristics of motion of taking yarn device according to four step rule braiding interweaves, wherein, knitting yarn wire system is taken yarn device and is moved along " Z " zag trajectory in face, and axle yarn system is taken yarn device along continuous straight runs in face and made to come and go rectilinear motion; Laterally filling weft systems is clamped between different rows braiding yarn uniformly along lateral rows direction in face; Longitudinally filling weft systems is clamped between different lines braiding yarn uniformly along longitudinal row direction in face; + 45 degree fill weft systems along in face+45 degree directions are clamped between difference+45 degree row braiding yarn uniformly;-45 degree are filled weft systems and are clamped in uniformly between difference-45 degree row braiding yarn along-45 degree directions in face; The weft systems that laterally interweaves is according to design rule, in face along lateral rows to yarn is chain interweaves with braiding.The weft systems that longitudinally interweaves is according to design rule, is longitudinally listed as to yarn is chain interweaves with braiding in face.Described design rule refers to laterally/longitudinally interweaves that weft yarn designs according to the desired different fabric structures of product from the rule that interweaves of braiding yarn.
Feature of the present invention is also: this composite compartment base plate had both had three-dimensional braided structure, had again three-dimensional woven.Knitting yarn wire system and axle yarn system interweave according to the four step rule 3 D weaving characteristics of motion, form three-dimensional braided structure, and the laterally/weft systems that longitudinally interweaves interweaves according to different fabric structures from knitting yarn wire system, form three-dimensional woven.
Feature of the present invention is also: the quantitative proportion that adds implantation site, axle yarn system and knitting yarn wire system of axial yarn wire system can arrange arbitrarily.Meanwhile, in a braiding circulation, added respectively two groups laterally and two groups longitudinally fill weft systems, added two groups+45 degree and two groups-45 degree to fill weft systems and added respectively two groups laterally and two groups of weft systems that longitudinally interweave respectively.A described braiding circulation is in following preparation method, and eight groups of yarn systems complete 16 step weave woven steps, forms a braiding circulation.
Feature of the present invention is also: laterally/fabric structure that longitudinally interweave weft yarn and knitting yarn wire system interweave can be plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.Due to laterally/fabric structure variation that longitudinally interweave weft yarn and knitting yarn wire system interweave, the multidirectional interlocking stitches structure of different types of three-dimension integrally will be developed out, the chain braided structure that runs through of oblique as multidirectional in three-dimension integrally, the multidirectional orthogonal layering interlocking stitches structure of three-dimension integrally, the multidirectional orthogonal interlocking stitches structure that runs through of three-dimension integrally, etc.
Feature of the present invention is also: in a braiding circulation, the weft yarn that laterally interweaves can be identical with the fabric structure of braiding yarns interwoven with the fabric structure of braiding yarns interwoven and the weft yarn that longitudinally interweaves, also can be different.
Feature of the present invention is also: the yarn in described composite compartment base arrangement has multiple orientation, and the form of yarn is also different.Braiding yarn aloft, along diagonal four direction orientation, is distributed in respectively in the parallel plane of two sets intersect, and braiding yarn remains straight line form.Axle yarn is orientated along weaving forming direction, laterally fill weft yarn along lateral rows direction orientation in face, longitudinally fill weft yarn along longitudinal row direction orientation in face, + 45 degree fill weft systems along in face+45 degree line directions orientations,-45 degree are filled weft systems along-45 degree column direction orientations in face, and the yarn of this five group system all remains straight form; Laterally/the weft yarn that longitudinally interweaves has with braiding yarn the feature that flexing interweaves, different fabric tissue pilotaxitic textures laterally/the critical shape difference of weft yarn in preform longitudinally interweaves; Interlocking stitches mode has determined the orientation of the laterally/weft yarn that longitudinally interweaves.For the orthogonal interlocking stitches structure that runs through of 3 D multi-directional, the laterally/weft yarn that longitudinally interweaves orientation is basic is along longitudinal row direction in lateral rows in face or face; For the chain braided structure that runs through of 3 D multi-directional oblique, the orientation of the laterally/weft yarn that longitudinally interweaves with face in lateral rows or face longitudinal row direction at an angle.
Feature of the present invention is also: described composite compartment base plate is periodic structure vertically; Described composite compartment base plate both can form symmetrical structure along thickness direction in face insied width direction and face, also can form unsymmetric structure.
Feature of the present invention is also: the transversal section structure of described composite compartment base plate axially changes along product.
Feature of the present invention is also: the braid angle scope of described composite compartment base plate is between 0 °-50 °; The fiber volume fraction of described composite compartment base plate significantly increases than existing braided structure composite, can reach more than 70%.
Feature of the present invention is also: the shape of cross section of described composite compartment base plate is square.
Feature of the present invention is also: eight groups of described yarn systems can be all the yarn beam of same component high-performance fiber composition; Also can be the shuffling of the yarn beam of different component high-performance fiber composition; Described high-performance fiber refers to the one in carbon fiber, Kafra fiber, glass fibre, aramid fiber, high-tenacity polyethylene fibre etc.; Can also be partly packing bundle, heat-barrier material bundle, anti-slip material bundle, high-abrasive material bundle, fibre bundle, piezoelectric bundle, magnetostriction bundle, stealth material bundle, to realize multifunction.Reisn base material adopts the one in epoxy resin, phenolic resins, polyurethane resin or unsaturated-resin.
Feature of the present invention is also: integral composite platform floor adopts resin transfer molding (RTM) process resin by injection, and adopts large-scale autoclave to carry out composite curing moulding.Described autoclave appearance and size is 30-35 rice, and diameter is 5.5 meters; Controllable temperature scope is room temperature to 300 ℃, and maximum pressure levels can reach 7 atmospheric pressure.
The preparation method of the multidirectional interlocking stitches structural composite material of described network-like three-dimension integrally platform floor, is characterized in that being prepared as follows:
1) preform design
According to the requirement of composite compartment base plate preform, first design.
A) determine yarn raw material;
B) determine that braiding machine machine chassis takes yarn device number;
C) determine braid angle, fiber volume fraction, the stitch length of product;
D) determine the yarn number of eight groups of different yarns systems;
E) determine laterally/longitudinally interweave weft yarn and the fabric structure that weaves yarns interwoven;
2) hanging wire, winding
Take yarn device number according to what determine, in braiding machine machine chassis, main body is taken yarn device and is arranged in the capable and n row box formation of m by preform section morphology.Knitting yarn wire system and axle yarn system are that in machine chassis, to take yarn device entrained.According to design rule, to take on yarn device and overwork respectively knitting yarn wire system and axis system in machine chassis, the ratio of axle yarn system and knitting yarn wire system can be carried out design arbitrarily and be arranged.The characteristics of motion of braiding yarn and axle yarn by hang braiding yarn and axle yarn take yarn device follow to row to alternating movement form.
Will be laterally/longitudinally fill weft systems, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves is wound in respectively on different weft inserting apparatuss, carry and feed laterally/longitudinally fill weft systems by weft inserting apparatus, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves, interweaves with knitting yarn wire system respectively.
3) weave woven
The concrete steps of eight groups of yarn system weave woven processes are as follows:
First step: on seam loop chassis, adjacent row is taken yarn device along traverse of the mutual changing of the relative positions of lateral rows direction.
Second step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally fill weft yarn clamping be uniformly expert to braiding yarn between.
Third step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between.+ 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 4th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
The 5th step: on seam loop chassis, adjacent row are taken traverse of the longitudinally mutual changing of the relative positions of column direction of yarn device.
The 6th step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 7th step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 8th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
The 9th step: on seam loop chassis, adjacent row is taken yarn device along the lateral rows direction direction contrary with the first step direction of motion, mutually traverse of the changing of the relative positions.
The tenth step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally fill weft yarn clamping be uniformly expert to braiding yarn between.
The 11 step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between.+ 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 12 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
The 13 step: on seam loop chassis, adjacent row are taken the longitudinally direction of column direction and the 5th step motion opposite direction of yarn device, traverse of the changing of the relative positions mutually.
The 14 step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 15 step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 16 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
4) urgent moulding
So, above 16 step weave woven steps form a braiding circulation, after each braiding circulation, carry out " urgent " operation, make mutual linking braiding between yarn, preform forms network-like compact structure, meets the braid angle of preform, the weaving parameter requests such as fiber volume fraction simultaneously.Repeat the first to the 16 step above, until reach required braiding preform length, braiding finishes, and completes the weave woven of the composite compartment base plate preform of the multidirectional interlocking stitches structure of network-like three-dimension integrally.
5) composite curing
After the composite compartment base plate preform weave woven of the multidirectional interlocking stitches structure of network-like three-dimension integrally completes, preform is collapsed to straight stretch-draw, overcome the situation that the yarn degree of tightness that produces differs in weaving process.By platform floor preform good weave woven, adopt resin transfer molding (RTM) process (RTM), resin by injection matrix, make the abundant impregnating resin of platform floor preform, be positioned in large-scale autoclave and solidify under High Temperature High Pressure, after resin compounded is solidified, obtain the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally of the present invention.
The present invention compared with prior art, has the following advantages and high-lighting effect:
The composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally provided by the invention, has the x of running through, y, and eight groups of yarn systems of z direction, between eight groups of yarn systems, mutual linking braiding forms fine and close three-dimension integrally network structure.Fundamentally overcome the concept of traditional laminated composite " layer ", greatly strengthened than the globality of existing braided structure composite.Meanwhile, due to the introducing of many group yarn systems, significantly increase the fiber volume fraction of composite compartment base plate, solved the low weakness of existing braided structure product fiber volume fraction.From mechanics angle, because introduced+45 degree/-45 degree of direction in face are filled weft systems, laterally/weft systems longitudinally interweaves, solve the poor critical defect of existing braided structure product in-plane mechanical properties, significantly improved the key mechanics performances such as the resistance to compression, shearing resistance, bending resistance, shock resistance, antifatigue of composite compartment base plate.In addition, yarn system of the present invention can partly adopt packing bundle, heat-barrier material bundle, anti-slip material bundle, high-abrasive material bundle, fibre bundle, etc., facilitated the Design and implementation of multifunction.Generally, the present invention has realized the optimal design theory of material, structure, function integration, has stronger applicability, is applied in the locomotive and each joint compartment with the air force aerotrain of imitative wing.The composite of the multidirectional interlocking stitches structure of network-like three-dimension integrally provided by the invention, except being applied to bullet train field, also can be applicable to main force support structure part and the high function product in the fields such as Aero-Space, navigation, defence equipment, civilian structure.
In the scope of applicant's retrieval, composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally of the present invention and preparation method thereof yet there are no pertinent literature report.
Accompanying drawing explanation
Fig. 1 is the air force aerotrain schematic diagram with imitative wing.
Fig. 2 is the schematic diagram of composite compartment base plate.
The cross sectional representation of the multidirectional interlocking stitches knot of Fig. 3 network-like three-dimension integrally provided by the invention.
Fig. 4 is knitting yarn wire system provided by the invention and axle yarn system braiding process schematic diagram.
Fig. 5 is horizontal weft systems provided by the invention and longitudinal weft systems feeding weaving diagram.
Fig. 6 is that provided by the invention+45 degree are filled weft yarn and-45 degree are filled weft yarn feeding weaving diagram.
Fig. 7 is the one provided by the invention weft yarn pilotaxitic texture schematic diagram that laterally interweaves.
Fig. 8 is the one provided by the invention weft yarn pilotaxitic texture schematic diagram that longitudinally interweaves.
1-is with the air force aerotrain of imitative wing; 2-imitates wing; 3-platform floor; 4-knitting yarn wire system; 5-axle yarn system; 6-laterally fills weft systems; 7-longitudinally fills weft systems; 8-+45 degree is filled weft systems; 9--45 degree is filled weft systems; The 10-weft systems that laterally interweaves; The 11-weft systems that longitudinally interweaves; 12-seam loop chassis; 13-braiding yarn is taken yarn device; 14-axle yarn is taken yarn device; 15-woven flat; 16-preform;
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated.
Fig. 1 is that Fig. 2 is the schematic diagram of composite compartment base plate with the air force aerotrain schematic diagram of imitative wing.
Fig. 3 is the cross sectional representation of the multidirectional interlocking stitches structure of a kind of network-like three-dimension integrally provided by the invention.It is characterized in that this product structure comprises eight groups of yarn systems that run through three directions of product x, y, z, be respectively knitting yarn wire system 4, axle yarn system 5, laterally fill weft systems 6, longitudinally fill weft systems 7 ,+45 degree and fill weft systems 8 ,-45 degree and fill weft systems 9, laterally interweave weft systems 10, the longitudinal weft systems 11 that interweaves.Based on three-dimension integrally braiding technique and three-dimension integrally weaving technology, between eight groups of yarn systems, mutual linking braiding forms fine and close three-dimension integrally network structure.
Between eight groups of yarn systems of the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally of the present invention, there is different yarns interwoven rules.Referring to Fig. 4, knitting yarn wire system and axle yarn system are carried by the yarn device of taking of 3 D weaving machine machine chassis 12, the characteristics of motion of taking yarn device according to four step rule braiding interweaves, wherein, knitting yarn wire system is taken yarn device 13 and is moved along " Z " zag trajectory in face, and axle yarn system is taken yarn device 14 along continuous straight runs in face and made to come and go rectilinear motion.Braiding yarn aloft, along diagonal four direction orientation, is distributed in respectively in the parallel plane of two sets intersect, and axle yarn is orientated along forming direction.Referring to Fig. 5, laterally fill weft systems 6 and be clamped in uniformly between different rows braiding yarn along lateral rows direction in face by weft inserting apparatus, longitudinally fill 7 of weft systems and be clamped in uniformly between different lines braiding yarn along longitudinal row direction in face by weft inserting apparatus; Referring to Fig. 6 ,+45 degree fill yarn systems 8 by weft inserting apparatus along in face+45 degree directions are clamped between difference+45 degree row braiding yarn uniformly;-45 degree are filled yarn system 9 and are clamped in uniformly between difference-45 degree row braiding yarn along-45 degree directions in face by weft inserting apparatus; The weft systems that laterally interweaves 10 is according to design rule, and in face, direction is along lateral rows to yarn is chain interweaves with braiding.The weft systems that longitudinally interweaves 11 is according to design rule, and in face, direction is longitudinally listed as to yarn is chain interweaves with braiding.Described design rule refers to laterally/longitudinally interweaves that weft yarn designs according to the desired different fabric structures of product from the rule that interweaves of braiding yarn.Referring to Fig. 7 and Fig. 8, the weft systems that laterally interweaves is plain weave oblique interlock with the rule that interweaves of braiding yarn, and the weft systems that longitudinally interweaves is the orthogonal linkage structure of plain weave with the rule that interweaves of braiding yarn.
The present invention has designed the preparation method of the composite compartment base plate of the multidirectional interlocking stitches structure of described network-like three-dimension integrally simultaneously, it is characterized in that being prepared as follows:
1) preform design
According to the requirement of composite compartment base plate preform, first design.
A) determine yarn raw material;
B) determine that seam loop chassis takes yarn device number;
C) determine braid angle, fiber volume fraction, stitch length;
D) determine the yarn number of eight groups of different yarns systems;
E) determine laterally/longitudinally interweave weft yarn and the fabric structure that weaves yarns interwoven;
2) hanging wire, winding
Referring to Fig. 4, take yarn device number according to what determine, in braiding machine machine chassis 12, main body is taken yarn device and is arranged in the capable and n row box formation of m by preform 16 section morphologies.Knitting yarn wire system 4 and axle yarn system 5 are entrained for taking yarn device in machine chassis.According to design rule, to take on yarn device and overwork respectively knitting yarn wire system and axis system in machine chassis, the ratio that adds implantation site, axle yarn system and knitting yarn wire system of axial yarn wire system can be carried out design arbitrarily and be arranged.The characteristics of motion of braiding yarn and axle yarn by hang braiding yarn and axle yarn take yarn device follow to row to alternating movement form.
Will be laterally/longitudinally fill weft systems, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves is wound in respectively on different weft inserting apparatuss, carry and feed laterally/longitudinally fill weft systems by weft inserting apparatus, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves, interweaves with braiding yarn respectively.
3) weave woven
The concrete steps of eight groups of yarn system weave woven processes are as follows:
First step: referring to Fig. 4, on seam loop chassis 12, adjacent row is taken yarn device along traverse of the mutual changing of the relative positions of lateral rows direction.
Second step: referring to Fig. 5, along take yarn device capable with row between laterally filling weft systems 6 of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally fill weft yarn clamping be uniformly expert to braiding yarn between.
Third step: referring to Fig. 6, fill weft systems 8 along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between.+ 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 4th step: referring to Fig. 7, according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems 10 that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
The 5th step: referring to Fig. 4, on seam loop chassis 12, adjacent row are taken traverse of the longitudinally mutual changing of the relative positions of column direction of yarn device.
The 6th step: referring to Fig. 5, longitudinally fill weft systems 7 along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 7th step: referring to Fig. 6, fill weft systems 9 along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 8th step: referring to Fig. 8, according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems 11 that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
The 9th step: referring to Fig. 4, on seam loop chassis 12, adjacent row is taken the direction of yarn device along lateral rows direction and the 1st step motion opposite direction, mutually traverse of the changing of the relative positions.
The tenth step: referring to Fig. 5, along take yarn device capable with row between laterally filling weft systems 6 of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally fill weft yarn clamping be uniformly expert to braiding yarn between.
The 11 step: referring to Fig. 6, fill weft systems 8 along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between.+ 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 12 step: referring to Fig. 7, according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems 10 that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
The 13 step: referring to Fig. 4, on seam loop chassis 12, adjacent row are taken the longitudinally direction of column direction and the 5th step motion opposite direction of yarn device, traverse of the changing of the relative positions mutually.
The 14 step: referring to Fig. 5, longitudinally fill weft systems 7 along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 15 step: referring to Fig. 6, fill weft systems 9 along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 16 step: referring to Fig. 8, according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems 11 that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction etc.
4) urgent moulding
So, above 16 step weave woven steps form a braiding circulation, after each braiding circulation, carry out " urgent " operation, make mutual linking braiding between yarn, preform forms network-like compact structure, meets the braid angle of preform, the weaving parameter requests such as fiber volume fraction simultaneously.Repeat the first to the 16 step above, until reach required braiding preform length, braiding finishes, and completes the weave woven of the composite compartment base plate preform of the multidirectional interlocking stitches structure of network-like three-dimension integrally.
5) composite curing
After the composite compartment base plate preform weave woven of the multidirectional interlocking stitches structure of network-like three-dimension integrally completes, preform is collapsed to straight stretch-draw, overcome the situation that the yarn degree of tightness that produces differs in weaving process.By platform floor preform good weave woven, adopt resin transfer molding (RTM) process (RTM), resin by injection matrix, makes the abundant impregnating resin of platform floor preform, is positioned in large-scale autoclave and solidifies under High Temperature High Pressure.Described resin matrix adopts the one in epoxy resin, phenolic resins, polyurethane resin or unsaturated-resin.Described autoclave appearance and size is 30-35 rice, and diameter is 5.5 meters, and controllable temperature scope is room temperature to 300 ℃, and maximum pressure levels can reach 7 atmospheric pressure.After resin compounded is solidified, obtain the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally of the present invention.
Provide specific embodiments of the invention below.
Embodiment 1:
Composite compartment base plate preform cross section is square, and appearance and size is: meter (wide) × 0.03,25 meters of (length) × 3 meter (height).
1) preform design
A) determine yarn raw material;
The raw material that all yarn systems adopt are the yarn beam of glass fibre composition.
B) determine that seam loop chassis takes yarn device number;
Main body is taken yarn device line number m=12, and main body is taken yarn device columns n=900, and the ratio of knitting yarn wire system and axle yarn system is 1:1, completely adds axle yarn that is:.
Knitting yarn is taken yarn device number: 12 row × 900 row=10800
Axle yarn is taken yarn device number: 12 row × 900 row=10800
C) determine braid angle, fiber volume fraction, stitch length;
Braid angle is 20 degree, and fiber volume fraction is 60%, and stitch length is 10mm.
D) determine the yarn number of eight groups of different yarns systems;
Braiding yarn number: 10800.
Axle yarn number: 10800.
Braiding circulation adds two groups laterally to fill weft yarn, two groups and longitudinally fill that weft yarn, two groups+45 degree are filled weft yarns, two groups-45 degree are filled weft yarns, two groups of weft yarns that laterally interweave, two groups of weft yarns that longitudinally interweave.In a braiding circulation, laterally fill weft yarn, longitudinally fill weft yarn ,+45 degree fill weft yarns ,-45 degree fill weft yarns, laterally interweave weft yarn, longitudinally the interweave number of weft yarn is respectively:
Laterally fill weft yarn number: 11
Longitudinally fill weft yarn number: 899
+ 45 degree are filled weft yarn number: 910
-45 degree are filled weft yarn number: 910
Weft count laterally interweaves: 25/10cm
Weft count longitudinally interweaves: 25/10cm
Preform has woven, required horizontal filling weft yarn, longitudinally fill weft yarn ,+45 degree fill weft yarns ,-45 degree fill weft yarns, laterally interweave weft yarn, longitudinally the weft yarn total number that interweaves is respectively:
Laterally fill weft yarn number: (11 × braiding cycle-index) root
Longitudinally fill weft yarn number: (899 × braiding cycle-index) root
+ 45 degree are filled weft yarn number: (910 × braiding cycle-index) root
-45 degree are filled weft yarn number: (910 × braiding cycle-index) root
Weft count laterally interweaves: 25/10cm
Weft count longitudinally interweaves: 25/10cm
E) determine laterally/longitudinally interweave weft yarn and the fabric structure that weaves yarns interwoven;
Weft yarn and the fabric structure that weaves yarns interwoven laterally interweave: the orthogonal linkage structure of plain weave.
Weft yarn and the fabric structure that weaves yarns interwoven longitudinally interweave: the orthogonal linkage structure of plain weave.
2) hanging wire, winding
Take yarn device number according to what determine, on seam loop chassis, main body is taken yarn device and is arranged in 12 row and 900 row box formations by square-section form.Knitting yarn wire system and axle yarn system are that in machine chassis, to take yarn device entrained.The design rule that is 1:1 according to the ratio of axle yarn system and knitting yarn wire system, takes and on yarn device, overworks respectively knitting yarn wire system and axis system in machine chassis.The characteristics of motion of braiding yarn and axle yarn by hang braiding yarn and axle yarn take yarn device follow to row to alternating movement form.Knitting yarn wire system is taken yarn device and in face, is formed " Z " font movement locus, and axle yarn system is taken yarn device along continuous straight runs moving linearly in face.
Will be laterally/longitudinally fill weft systems, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves is wound in respectively on different weft inserting apparatuss, carry and feed laterally/longitudinally fill weft systems by weft inserting apparatus, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves, interweaves with braiding yarn respectively.
3) weave woven
The concrete steps of eight groups of yarn system weave woven processes are as follows:
First step: on seam loop chassis, adjacent row is taken yarn device along traverse of the mutual changing of the relative positions of lateral rows direction.
Second step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally weft yarn clamping be uniformly expert to braiding yarn between.
Third step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between.+ 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 4th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is the orthogonal linkage structure of plain weave.
The 5th step: on seam loop chassis, adjacent row are taken traverse of the longitudinally mutual changing of the relative positions of column direction of yarn device.
The 6th step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 7th step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 8th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is the orthogonal linkage structure of plain weave.
The 9th step: on seam loop chassis, adjacent row is taken the direction of yarn device along lateral rows direction and the 1st step motion opposite direction, mutually traverse of the changing of the relative positions.
The tenth step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally fill weft yarn clamping be uniformly expert to braiding yarn between.
The 11 step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between.+ 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 12 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is the orthogonal linkage structure of plain weave.
The 13 step: on seam loop chassis, adjacent row are taken the longitudinally direction of column direction and the 5th step motion opposite direction of yarn device, traverse of the changing of the relative positions mutually.
The 14 step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 15 step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 16 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is the orthogonal linkage structure of plain weave.
4) urgent moulding
So, above 16 step weave woven steps form a braiding circulation, after each braiding circulation, carry out " urgent " operation, make mutual linking braiding between yarn, preform forms network-like compact structure, and the braid angle that simultaneously meets preform is 20 degree, fiber volume fraction is 60%, the weaving parameter request that stitch length is 10mm.Repeat the first to the 16 step above, in this enforcement, carry out 2500 braiding circulations, until reach required braiding preform length, braiding finishes, and completes the weave woven of the composite compartment base plate preform of the multidirectional interlocking stitches structure of network-like three-dimension integrally.
5) composite curing
After the composite compartment base plate preform weave woven of the multidirectional interlocking stitches structure of network-like three-dimension integrally completes, preform is collapsed to straight stretch-draw, overcome the situation that the yarn degree of tightness that produces differs in weaving process.By platform floor preform good weave woven, adopt resin transfer molding (RTM) process (RTM), injection ring epoxy resins, make the abundant epoxy resin-impregnated of platform floor preform, be positioned in large-scale autoclave, under 3 atmospheric pressure, at 180 ℃, solidify 20 hours, after resin compounded is solidified, obtain the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally of the present invention, platform floor one-shot forming, do not need secondary operations, can not cause damage to composite, the composite compartment base plate appearance and size length of preparation is 25 meters, width is 3 meters, be highly 0.03 meter, braid angle is 20 degree, and fiber volume fraction is 60%.
Composite compartment base plate preform cross section is square, and appearance and size is: meter (wide) × 0.05,25 meters of (length) × 3 meter (height).
1) preform design
A) determine yarn raw material;
Knitting yarn wire system, axle yarn system, laterally fill weft systems, longitudinally fill weft systems ,+45 degree fill weft systems ,-45 degree fill weft systems, laterally interweave weft systems, longitudinally the weft systems that interweaves all adopts T30012k carbon fiber.
B) determine that seam loop chassis takes yarn device number;
Main body is taken yarn device line number m=20, and main body is taken yarn device columns n=1000, and the ratio of knitting yarn wire system and axle yarn system is 1:1, completely adds axle yarn that is:.
Knitting yarn is taken yarn device number: 20=20000 of row × 1000 row
Axle yarn is taken yarn device number: 20=20000 of row × 1000 row
C) determine braid angle, fiber volume fraction, stitch length;
Braid angle is 30 degree, and fiber volume fraction is 65%, stitch length 6mm.
D) determine the yarn number of eight groups of different yarns systems;
Braiding yarn number: 20000.
Axle yarn number: 20000.
Braiding circulation adds two groups laterally to fill weft yarn, two groups and longitudinally fill that weft yarn, two groups+45 degree are filled weft yarns, two groups-45 degree are filled weft yarns, two groups of weft yarns that laterally interweave, two groups of weft yarns that longitudinally interweave.In a braiding circulation, laterally fill weft yarn, longitudinally fill weft yarn ,+45 degree fill weft yarns ,-45 degree fill weft yarns, laterally interweave weft yarn, longitudinally the interweave number of weft yarn is respectively:
Laterally fill weft yarn number: 19
Longitudinally fill weft yarn number: 999
+ 45 degree are filled weft yarn number: 1018
-45 degree are filled weft yarn number: 1018
Weft yarn laterally interweaves: pass through long thickness direction.Warp count: 30/10cm
Weft yarn longitudinally interweaves: weft count: 30/10cm
Preform has woven, required horizontal filling weft yarn, longitudinally fill weft yarn ,+45 degree fill weft yarns ,-45 degree fill weft yarns, laterally interweave weft yarn, longitudinally the weft yarn total number that interweaves is respectively:
Laterally fill weft yarn number: (19 × braiding cycle-index) root
Longitudinally fill weft yarn number: (999 × braiding cycle-index) root
+ 45 degree are filled weft yarn number: (1018 × braiding cycle-index) root
-45 degree are filled weft yarn number: (1018 × braiding cycle-index) root
Weft count laterally interweaves: 30/10cm
Weft count longitudinally interweaves: 30/10cm
E) determine laterally/longitudinally interweave weft yarn and the fabric structure that weaves yarns interwoven;
Weft yarn and the fabric structure that weaves yarns interwoven laterally interweave: plain weave oblique layering linkage structure.
Weft yarn and the fabric structure that weaves yarns interwoven longitudinally interweave: plain weave oblique layering linkage structure.
2) hanging wire, winding
Take yarn device number according to what determine, in braiding machine machine chassis, main body is taken yarn device and is arranged in 20 row and 1000 row box formations by square-section form.Knitting yarn wire system and axle yarn system are that in machine chassis, to take yarn device entrained.The design rule that is 1:1 according to the ratio of axle yarn system and knitting yarn wire system, takes and on yarn device, overworks respectively knitting yarn wire system and axis system in machine chassis.The characteristics of motion of braiding yarn and axle yarn by hang braiding yarn and axle yarn take yarn device follow to row to alternating movement form.Knitting yarn wire system is taken yarn device and in face, is formed " Z " font movement locus, and axle yarn system is taken yarn device along continuous straight runs moving linearly in face.
Will be laterally/longitudinally fill weft systems, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves is wound in respectively on different weft inserting apparatuss, carry and feed laterally/longitudinally fill weft systems by weft inserting apparatus, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves, interweaves with braiding yarn respectively.
3) weave woven
The concrete steps of eight groups of yarn system weave woven processes are as follows:
First step: on seam loop chassis, adjacent row is taken yarn device along traverse of the mutual changing of the relative positions of lateral rows direction.
Second step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally fill weft yarn clamping be uniformly expert to braiding yarn between.
Third step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row, by weft inserting apparatus aloft-45 degree are filled weft yarns along-45 degree directions in face vertically feed line by line adjacent-45 degree weave yarns capable between.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 4th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is plain weave oblique multilayer linkage structure.
The 5th step: on seam loop chassis, adjacent row are taken traverse of the longitudinally mutual changing of the relative positions of column direction of yarn device.
The 6th step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 7th step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed by column adjacent+45 and spend between knitting yarn alignments.-45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 8th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is plain weave oblique multilayer linkage structure.
The 9th step: on seam loop chassis, adjacent row is taken the direction of yarn device along lateral rows direction and the 1st step motion opposite direction, mutually traverse of the changing of the relative positions.
The tenth step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between.Laterally fill weft yarn clamping be uniformly expert to braiding yarn between.
The 11 step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between.+ 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between.
The 12 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is plain weave oblique multilayer linkage structure.
The 13 step: on seam loop chassis, adjacent row are taken the longitudinally direction of column direction and the 5th step motion opposite direction of yarn device, traverse of the changing of the relative positions mutually.
The 14 step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus.Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between.
The 15 step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face.-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between.
The 16 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system.Described fabric structure is plain weave oblique multilayer linkage structure.
4) urgent moulding
So, above 16 form a braiding circulation step by step suddenly, after each braiding circulation, carry out " urgent " operation, make mutual linking braiding between yarn, preform forms fine and close structure, and meet composite compartment base plate preform braid angle is 30 degree simultaneously, fiber volume fraction is 65%, the weaving parameter request that stitch length is 6mm.Repeat the first to the 16 step above, in this enforcement, carry out 4200 braiding circulations, until reach 25 meters of required braided fabric length, braiding finishes, and completes the weave woven of the composite compartment base plate preform of the multidirectional interlocking stitches structure of network-like three-dimension integrally.
5) composite curing
After the platform floor preform weave woven of the multidirectional interlocking stitches structure of network-like three-dimension integrally completes, preform is collapsed to straight stretch-draw, overcome the situation that the yarn degree of tightness that produces differs in weaving process.By platform floor preform good weave woven, adopt resin transfer molding (RTM) process (RTM), injection ring epoxy resins, make the abundant epoxy resin-impregnated of platform floor preform, be positioned in large-scale autoclave, under 3 atmospheric pressure, at 180 ℃, solidify 24 hours, after resin compounded is solidified, obtain the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally of the present invention, platform floor one-shot forming, do not need secondary operations, can not cause damage to composite, the composite compartment base plate appearance and size length of preparation is 25 meters, width is 3 meters, be highly 0.05 meter, braid angle is 30 degree, and fiber volume fraction is 65%.
Claims (13)
1. a composite compartment base plate for the multidirectional interlocking stitches structure of network-like three-dimension integrally, this platform floor, take three-dimension integrally braiding technique and three-dimension integrally weaving technology as basis, completes according to 16 step weave woven steps; It is characterized in that: this compartment bottom plate structure thereof three-dimensional four-way different from the past, three-dimensional five to, three-dimensional six to, three-dimensional seven to braided structure, comprise eight groups of yarn systems that run through three directions of composite x, y, z: knitting yarn wire system, axle yarn system, laterally fill weft systems, longitudinally fill weft systems ,+45 degree and fill weft systems ,-45 degree and fill weft systems, laterally interweave weft systems, the longitudinal weft systems that interweaves, between eight groups of yarn systems, form fine and close three-dimension integrally network structure according to the different rule mutual linking braidings that interweaves;
Manufacturing step is as follows:
1) preform design
According to the requirement of composite compartment base plate preform, first design;
A) determine yarn raw material;
B) determine that braiding machine machine chassis takes yarn device number;
C) determine braid angle, fiber volume fraction, the stitch length of product;
D) determine the yarn number of eight groups of different yarns systems;
E) determine laterally/longitudinally interweave weft yarn and the fabric structure that weaves yarns interwoven;
2) hanging wire, winding
Take yarn device number according to what determine, in braiding machine machine chassis, main body is taken yarn device and is arranged in the capable and n row box formation of m by preform section morphology; Knitting yarn wire system and axle yarn system are that in machine chassis, to take yarn device entrained; According to design rule, to take on yarn device and overwork respectively knitting yarn wire system and axis system in machine chassis, the ratio of axle yarn system and knitting yarn wire system can design arbitrarily; The characteristics of motion of braiding yarn and axle yarn by hang braiding yarn and axle yarn take yarn device follow to row to alternating movement form;
Will be laterally/longitudinally fill weft systems, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves is wound in respectively on different weft inserting apparatuss, carry and feed laterally/longitudinally fill weft systems by weft inserting apparatus, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves, interweaves with knitting yarn wire system respectively;
3) weave woven
Eight groups of yarn systems complete braiding manufacture according to the step of 16 step braiding manufactures;
4) urgent moulding
Described 16 step weave woven steps form a braiding circulation, after each braiding circulation, carry out " urgent " operation, make mutual linking braiding between yarn, preform forms network-like compact structure, meet the braid angle of preform, fiber volume fraction weaving parameter request simultaneously; Repeat the first to the 16 step above, until reach required braiding preform length, braiding finishes, and completes the weave woven of the composite compartment base plate preform of the multidirectional interlocking stitches structure of network-like three-dimension integrally;
5) composite curing
After the composite compartment base plate preform weave woven of the multidirectional interlocking stitches structure of network-like three-dimension integrally completes, preform is collapsed to straight stretch-draw, overcome the situation that the yarn degree of tightness that produces differs in weaving process; By platform floor preform good weave woven, adopt resin transfer molding (RTM) process (RTM), resin by injection matrix, make the abundant impregnating resin of platform floor preform, be positioned in large-scale autoclave and solidify under High Temperature High Pressure, described large-scale autoclave refers to that appearance and size is 30-35 rice, and diameter is the autoclave of 5.5 meters; Described high temperature refers to 180 ℃-300 ℃; A described high end finger 3-7 atmospheric pressure; After resin compounded is solidified, obtain the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally.
2. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 1, is characterized in that: between different yarns system, have different yarns interwoven rules; Knitting yarn wire system and axle yarn system by 3 D weaving machine machine chassis to take yarn device entrained, the characteristics of motion of taking yarn device according to four step rule braiding interweaves, wherein, knitting yarn wire system is taken yarn device and is moved along " Z " zag trajectory in face, and axle yarn system is taken yarn device along continuous straight runs in face and made to come and go rectilinear motion; Laterally filling weft systems is clamped between different rows braiding yarn uniformly along lateral rows direction in face; Longitudinally filling weft systems is clamped between different lines braiding yarn uniformly along longitudinal row direction in face; + 45 degree fill weft systems along in face+45 degree directions are clamped between difference+45 degree row braiding yarn uniformly;-45 degree are filled weft systems and are clamped in uniformly between difference-45 degree row braiding yarn along-45 degree directions in face; The weft systems that laterally interweaves is according to design rule, in face along lateral rows to yarn is chain interweaves with braiding; The weft systems that longitudinally interweaves is according to design rule, is longitudinally listed as to yarn is chain interweaves with braiding in face; Described design rule refers to laterally/longitudinally interweaves that weft yarn designs according to the desired different fabric structures of product from the rule that interweaves of braiding yarn.
3. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 1, is characterized in that: this composite compartment base plate had both had three-dimensional braided structure, had again three-dimensional woven; Knitting yarn wire system and axle yarn system interweave according to the four step rule 3 D weaving characteristics of motion, form three-dimensional braided structure, and the laterally/weft systems that longitudinally interweaves interweaves according to different fabric structures from knitting yarn wire system, form three-dimensional woven; The braid angle scope of described composite compartment base plate is between 0 °-50 °.
4. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 3, is characterized in that: the fiber volume fraction of described composite compartment base plate is more than 70%.
5. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 1, is characterized in that: the quantitative proportion that adds implantation site, axle yarn system and knitting yarn wire system of axial yarn wire system can arrange arbitrarily; Meanwhile, in a braiding circulation, added respectively two groups laterally and two groups longitudinally fill weft systems, added two groups+45 degree and two groups-45 degree to fill weft systems and added respectively two groups laterally and two groups of weft systems that longitudinally interweave respectively.
6. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 1, it is characterized in that: laterally/fabric structure that longitudinally interweave weft yarn and knitting yarn wire system interweave, comprises plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction; Due to laterally/longitudinally interweave weft yarn and fabric structure variation that knitting yarn wire system interweaves, the multidirectional interlocking stitches structure of different types of three-dimension integrally will be developed out; In a braiding circulation, the weft yarn that laterally interweaves is identical or different with the fabric structure of braiding yarns interwoven with the fabric structure of braiding yarns interwoven and the weft yarn that longitudinally interweaves.
7. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 6, is characterized in that: the multidirectional interlocking stitches structure of described different types of three-dimension integrally comprises chain braided structure or the multidirectional orthogonal layering interlocking stitches structure of three-dimension integrally or the multidirectional orthogonal interlocking stitches structure that runs through of three-dimension integrally of running through of the multidirectional oblique of three-dimension integrally.
8. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 1, is characterized in that: the yarn in described composite compartment base arrangement has multiple orientation, and the form of yarn is also different; Braiding yarn aloft, along diagonal four direction orientation, is distributed in respectively in the parallel plane of two sets intersect, and braiding yarn remains straight line form; Axle yarn is orientated along weaving forming direction, laterally fill weft yarn along lateral rows direction orientation in face, longitudinally fill weft yarn along longitudinal row direction orientation in face, + 45 degree fill weft systems along in face+45 degree line directions orientations,-45 degree are filled weft systems along-45 degree column direction orientations in face, and the yarn of this five group system all remains straight form; Laterally/the weft yarn that longitudinally interweaves has with braiding yarn the feature that flexing interweaves, different fabric tissue pilotaxitic textures laterally/the critical shape difference of weft yarn in preform longitudinally interweaves; Interlocking stitches mode has determined the orientation of the laterally/weft yarn that longitudinally interweaves; For the orthogonal interlocking stitches structure that runs through of 3 D multi-directional, the laterally/weft yarn that longitudinally interweaves orientation is basic is along longitudinal row direction in lateral rows in face or face; For the chain braided structure that runs through of 3 D multi-directional oblique, the orientation of the laterally/weft yarn that longitudinally interweaves with face in lateral rows or face longitudinal row direction at an angle.
9. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 1, it is characterized in that: described composite compartment base plate is periodic structure vertically, both can form symmetrical structure along thickness direction in face insied width direction and face, also can form unsymmetric structure; The shape of cross section of described composite compartment base plate is square, and transversal section structure axially changes along product.
10. the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally according to claim 1, is characterized in that: eight groups of described yarn systems are all the yarn beam of same component high-performance fiber composition; Or eight groups of described yarn systems are shufflings of the yarn beam of different component high-performance fiber composition; Described high-performance fiber refers to the one in carbon fiber, Kafra fiber, glass fibre, aramid fiber, high-tenacity polyethylene fibre; Reisn base material adopts the one in epoxy resin, phenolic resins, polyurethane resin or unsaturated-resin.
The composite compartment base plate of the multidirectional interlocking stitches structure of 11. network-like three-dimension integrally according to claim 10, is characterized in that: described eight groups of yarn system parts are packing bundle, heat-barrier material bundle, anti-slip material bundle, high-abrasive material bundle, fibre bundle, piezoelectric bundle, magnetostriction bundle, stealth material bundle.
The composite compartment base plate of the multidirectional interlocking stitches structure of 12. network-like three-dimension integrally according to claim 1, it is characterized in that: the length of described integral composite platform floor appearance and size is 0-28 rice, width is 0-3.5 rice, and thickness is 0-0.05 rice; Described integral composite platform floor adopts resin transfer molding (RTM) process resin by injection, and adopts large-scale autoclave to carry out composite curing moulding; Described autoclave appearance and size is 30-35 rice, and diameter is 5.5 meters; Controllable temperature scope is room temperature to 300 ℃, and maximum pressure levels can reach 7 atmospheric pressure.
13. 1 kinds of preparation methods of the multidirectional interlocking stitches structural composite material of network-like three-dimension integrally platform floor as claimed in claim 1, is characterized in that being prepared as follows:
1) preform design
According to the requirement of composite compartment base plate preform, first design;
A) determine yarn raw material;
B) determine that braiding machine machine chassis takes yarn device number;
C) determine braid angle, fiber volume fraction, the stitch length of product;
D) determine the yarn number of eight groups of different yarns systems;
E) determine laterally/longitudinally interweave weft yarn and the fabric structure that weaves yarns interwoven;
2) hanging wire, winding
Take yarn device number according to what determine, in braiding machine machine chassis, main body is taken yarn device and is arranged in the capable and n row box formation of m by preform section morphology; Knitting yarn wire system and axle yarn system are that in machine chassis, to take yarn device entrained; According to design rule, to take on yarn device and overwork respectively knitting yarn wire system and axis system in machine chassis, the ratio of axle yarn system and knitting yarn wire system can design arbitrarily; The characteristics of motion of braiding yarn and axle yarn by hang braiding yarn and axle yarn take yarn device follow to row to alternating movement form;
Will be laterally/longitudinally fill weft systems, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves is wound in respectively on different weft inserting apparatuss, carry and feed laterally/longitudinally fill weft systems by weft inserting apparatus, + 45 degree/-45 degree are filled weft systems, laterally/the weft systems that longitudinally interweaves, interweaves with knitting yarn wire system respectively;
3) weave woven
The concrete steps of eight groups of yarn system weave woven processes are as follows:
First step: on seam loop chassis, adjacent row is taken yarn device along traverse of the mutual changing of the relative positions of lateral rows direction;
Second step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between; Laterally fill weft yarn clamping be uniformly expert to braiding yarn between;
Third step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between; + 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between;
The 4th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system; Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction;
The 5th step: on seam loop chassis, adjacent row are taken traverse of the longitudinally mutual changing of the relative positions of column direction of yarn device;
The 6th step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus; Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between;
The 7th step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face;-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between;
The 8th step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system; Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction;
The 9th step: on seam loop chassis, adjacent row is taken yarn device along the lateral rows direction direction contrary with the first step direction of motion, mutually traverse of the changing of the relative positions;
The tenth step: along take yarn device capable with row between laterally filling weft systems of feeding, by weft inserting apparatus aloft by laterally fill weft yarn vertically feed line by line adjacent braiding yarn capable between; Laterally fill weft yarn clamping be uniformly expert to braiding yarn between;
The 11 step: fill weft systems along taking feeding+45 degree between yarn device+45 degree row and row, by weft inserting apparatus aloft+45 degree are filled weft yarns along in face+45 degree directions vertically feed line by line adjacent+45 degree weave yarns capable between; + 45 degree fill be clamped in uniformly+45 degree row of weft yarns to braiding yarn between;
The 12 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus in face along the lateral rows direction feeding weft systems that laterally interweaves, carry out chain interweaving with knitting yarn wire system; Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction;
The 13 step: on seam loop chassis, adjacent row are taken the longitudinally direction of column direction and the 5th step motion opposite direction of yarn device, traverse of the changing of the relative positions mutually;
The 14 step: longitudinally fill weft systems along taking feeding between yarn device row and row, aloft vertically fed by column between adjacent knitting yarn alignment longitudinally filling weft yarn by weft inserting apparatus; Longitudinally fill weft yarn be clamped in uniformly row to braiding yarn between;
The 15 step: fill weft systems along taking feeding-45 degree between yarn device-45 degree row and row ,-45 degree are filled to weft yarn aloft by weft inserting apparatus and vertically feed by column between adjacent-45 degree knitting yarn alignments along-45 degree directions in face;-45 degree fill weft yarns be clamped in uniformly-45 degree row to braiding yarn between;
The 16 step: according to the fabric structure the designing rule that interweaves, by weft inserting apparatus longitudinally column direction feeding in face weft systems that longitudinally interweaves, carry out chain interweaving with knitting yarn wire system; Described fabric structure refers to plain weave, twill, satin weave, one in velveteen, latitude velveteen, alternative construction;
4) urgent moulding
So, above 16 step weave woven steps form a braiding circulation, after each braiding circulation, carry out " urgent " operation, make mutual linking braiding between yarn, preform forms network-like compact structure, meets the braid angle of preform simultaneously, fiber volume fraction weaving parameter request; Repeat the first to the 16 step above, until reach required braiding preform length, braiding finishes, and completes the weave woven of the composite compartment base plate preform of the multidirectional interlocking stitches structure of network-like three-dimension integrally;
5) composite curing
After the composite compartment base plate preform weave woven of the multidirectional interlocking stitches structure of network-like three-dimension integrally completes, preform is collapsed to straight stretch-draw, overcome the situation that the yarn degree of tightness that produces differs in weaving process; By platform floor preform good weave woven, adopt resin transfer molding (RTM) process (RTM), resin by injection matrix, make the abundant impregnating resin of platform floor preform, be positioned in large-scale autoclave and solidify under High Temperature High Pressure, described large-scale autoclave is that appearance and size is 30-35 rice, and diameter is the autoclave of 5.5 meters; Described high temperature is 180 ℃-300 ℃; Described high pressure is 3-7 atmospheric pressure; After resin compounded is solidified, obtain the composite compartment base plate of the multidirectional interlocking stitches structure of network-like three-dimension integrally.
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Effective date of registration: 20240902 Address after: Room 302, 3rd Floor, Building 2, Courtyard 9, Jiaogezhuang Street, Nanfaxin Town, Shunyi District, Beijing, 101316 Patentee after: Beijing bionic interface science and Technology Research Institute Country or region after: China Address before: 100191 No. 37, Haidian District, Beijing, Xueyuan Road Patentee before: BEIHANG University Country or region before: China |