CN212194489U - Wide carbon fiber cloth and three-dimensional fiber preform - Google Patents
Wide carbon fiber cloth and three-dimensional fiber preform Download PDFInfo
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- CN212194489U CN212194489U CN201922058233.8U CN201922058233U CN212194489U CN 212194489 U CN212194489 U CN 212194489U CN 201922058233 U CN201922058233 U CN 201922058233U CN 212194489 U CN212194489 U CN 212194489U
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Abstract
The utility model provides a pair of broad width carbon cloth and three-dimensional fibre preform. The wide-width carbon fiber cloth comprises a plurality of warp yarns and a plurality of weft yarns interwoven with the warp yarns, wherein the warp yarns and the weft yarns are coated carbon fiber bundles, and the width of the carbon fiber cloth is more than or equal to 3 meters. The utility model improves the structure of the carbon fiber bundle to coat the surface of the carbon fiber bundle, on one hand, the problem that the carbon fiber bundle is easy to fuzz and break due to low breaking elongation in the weaving process is solved, and the carbon fiber cloth with the width of 3 meters or more is successfully prepared; on the other hand, the forming of the wide-width carbon fiber cloth provides favorable conditions for the preparation of large-size and high-performance three-dimensional fiber preforms and even composite materials thereof, and avoids adverse effects caused by cutting and lapping.
Description
Technical Field
The utility model relates to a carbon fiber weaving technical field especially indicates a broad width carbon cloth, three-dimensional fibre preform.
Background
The high-performance composite material has excellent mechanical property and large-size process realizability, while a large-size (the size of a molded surface is more than 2 meters) profiling carbon fiber preform is a key basic material for developing the high-performance composite material, is an important reinforced structure form of the high-performance composite material with a complex shape, and exists in a form of carbon fiber cloth in the X-Y direction. At present, the maximum width of commonly used 1K and 3K carbon fiber cloth reaches 2 meters, and in the process of preparing a prefabricated body with the size larger than 2 meters, lapping treatment is needed due to insufficient width, and the lapping part needs to be sewn in advance, so that certain negative effects are brought to the performance of the prefabricated body with a complex shape, and the mechanical property of the composite material is reduced.
Because the 1K and 3K carbon fibers have low breaking elongation (about 1.6 percent; natural fibers such as cotton are 3-7 percent, silk is 15-25 percent, wool is 25-35 percent; chemical fibers such as terylene are 30-40 percent, spandex is 450-800 percent and the like), the fibers are easy to break, wear and fluff during weaving, and the appearance quality, the apparent uniformity and the mechanical property of the carbon fiber cloth are difficult to control; in the process of weaving the large-width cloth by adopting the existing wide-width weaving equipment (the width of the rapier loom produced in countries such as Germany and Belgium which are in international leading position can reach 4600mm), the performance of the carbon fiber is reduced, the fuzzing and the breaking are easy to occur, and the continuous weaving and forming are difficult because the weaving angle of warp yarns at two sides of the carbon fiber cloth is increased and the abrasion of the carbon fiber is increased. Therefore, large-width weaving equipment is only suitable for natural fibers and chemical fibers at present.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for an improved wide carbon fiber cloth and a three-dimensional fiber preform.
The utility model provides a technical scheme does: the wide-width carbon fiber cloth comprises a plurality of warp yarns and a plurality of weft yarns interwoven with the warp yarns, wherein the warp yarns and the weft yarns are coated carbon fiber bundles, and the width of the carbon fiber cloth is more than or equal to 3 meters.
Further, the surface layer of the coated carbon fiber bundle is sizing agent, and the inner layer of the coated carbon fiber bundle is carbon fiber bundle, wherein the sizing agent accounts for 1.2% of the mass of the carbon fiber bundle.
Further, the carbon fiber bundle is mainly composed of 1000 carbon fiber monofilaments or 3000 carbon fiber monofilaments.
Furthermore, the sizing agent is also covered on the surface layer of the carbon fiber monofilament.
Further, the arrangement density of the warp yarns is 4.0-12.5 yarns/cm.
Furthermore, the arrangement density of the weft yarns is 4.0-12.5 yarns/cm.
Further, the weave structure of the carbon fiber cloth is plain weave, twill weave or satin weave.
The utility model also provides a three-dimensional fiber preform, the molded surface size of which is more than 2 meters, the fiber preform comprises a plurality of molded surface layers which are sequentially coated or stacked, and interlayer fibers which connect the plurality of molded surface layers; at least one of the profile surface layers is the wide carbon fiber cloth which is integrally coated or laid, and the fibers between the layers comprise one or more of short fiber clusters which are implanted between the layers by needling, continuous fiber bundles which are introduced by sewing, fiber bundles which are introduced by puncturing or bars.
Furthermore, the lap joint parts of the plurality of layers of the wide carbon fiber cloth which are integrally coated or laid are mutually staggered.
Furthermore, the overlapped parts of the plurality of layers of the integrally coated or laid wide carbon fiber cloth are uniformly staggered according to the size of the molded surface.
Compared with the prior art, the wide carbon fiber cloth provided by the utility model has the advantages that the surface coating layer is formed by improving the structure of the carbon fiber bundles, so that the problems of low breaking elongation and easy fluffing and breaking of the carbon fiber bundles in the weaving process are solved, and the carbon fiber cloth with the width of 3 meters or more is successfully prepared; on the other hand, the forming of the wide-width carbon fiber cloth provides favorable conditions for the preparation of large-size and high-performance three-dimensional fiber preforms and even composite materials thereof, and avoids adverse effects caused by cutting and lapping.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of a coated carbon fiber bundle according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a wide carbon fiber cloth according to an embodiment of the present invention.
Description of reference numerals:
coated carbon fiber bundle 100
The following detailed description will further describe embodiments of the invention in conjunction with the above-described drawings.
Detailed Description
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the invention, and the described embodiments are merely some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the scope protected by the embodiments of the present invention.
The 1K and 3K in the text refer to the number of the carbon fiber monofilaments being 1000 and 3000.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present invention belong. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the invention.
Referring to fig. 1 and 2, the present invention relates to a wide carbon fiber cloth for a profile layer of a large-sized high-performance three-dimensional fiber preform. The carbon fiber cloth comprises a plurality of warp yarns and a plurality of weft yarns interwoven with the warp yarns, the warp yarns and the weft yarns are coated carbon fiber bundles 100, and the width of the carbon fiber cloth is more than or equal to 3 meters.
The coated carbon fiber bundle 100 comprises a surface layer and an inner layer, wherein the surface layer is the sizing agent 50, the inner layer is the carbon fiber bundle 10, the sizing agent 50 accounts for about 1.2% of the mass of the carbon fiber bundle 10, and the carbon fiber bundle 10 is coated and arranged on the surface layer of the carbon fiber bundle 10 and is uniformly distributed. In the specific embodiment, the sizing agent 50 is within 0.2% of the upper float and the lower float by mass, and the result is within the acceptable range through weaving and mechanical tests, and the sizing agent 50 can be epoxy resin, unsaturated polyester resin, polyurethane resin, polyamide resin, phenolic resin, modified resin thereof and the like. In the specific implementation mode, the content of the sizing agent is not low, the coating is easy to be uneven, the effect of improving the wear resistance of the carbon fiber bundle 10 cannot be achieved, the probability of breakage is high during continuous weaving, the efficiency is low, and the cost is high; meanwhile, the content of the sizing agent 50 should not be too high, on one hand, the content is high, the production cost is increased, on the other hand, the content of the sizing agent 50 is increased, the viscosity of the sizing agent 50 is increased, the corresponding fluidity and wettability are poor, difficulty is brought to control of coating uniformity, the coating process of the sizing agent 50 and the carbon fiber bundle 10 becomes complicated, and the implementation of industrial production is not facilitated. In a specific embodiment, the carbon fiber bundle 10 is mainly composed of 1000 carbon fiber monofilaments 1 or 3000 carbon fiber monofilaments 1, and the carbon fiber bundle 10 adopting the two specifications is mainly based on the actual needs of the existing production; if necessary, the utility model discloses also can be used for the carbon fiber of other specifications, like 6000 carbon fiber monofilament 1 constitutions, can be in the utility model discloses a on the basis, optimize the content of sizing agent, reach the sizing agent content value that can make carbon fiber bundle 10 satisfy the matching of weaving technology. In addition, the coating process of the sizing agent 50 and the carbon fiber bundle 10 can be obtained by immersing the carbon fiber bundle 10 in the sizing agent for a certain period of time and then drying; the carbon fiber bundle 10 is loose in the infiltration process, the carbon fiber monofilaments are naturally dispersed in the sizing agent solution from a bundle shape, the sizing agent 50 is fully contacted with the surface layer of the carbon fiber monofilaments 1, and after the coating is finished, the sizing agent 50 is also attached to the surface layer of the carbon fiber monofilaments 1.
In a specific embodiment, the arrangement density of the warp yarns is 4.0-12.5 yarns/cm. The arrangement density of the weft yarns is 4.0-12.5 yarns/cm. The weave structure of the carbon fiber cloth is plain weave, twill weave or satin weave.
In order to reduce the wool yarn condition of the carbon fiber in the weaving process, the method can be processed by the following steps: in the process of weaving the wide carbon fiber cloth, a warping process is omitted, two independent systems of a large-capacity creel and a tension control device are adopted, the coated carbon fiber bundle 100 is led out of the large-capacity creel in a tangent unwinding mode, and the coated carbon fiber bundle is fed into a weaving machine after the tension is adjusted by the tension control device. The tension control device adopts the rubber compression roller coated with the high-elasticity rubber layer on the surface in the process of adjusting the tension of the warp, and the rubber roller structure can effectively block the mutual interference of the tension of the carbon fiber bundle coated between the yarn storage system and the loom, so that each warp passing through the upper rubber roller and the lower rubber roller is flat and uniform in tension, and the weaving requirement of the cloth with the width larger than or equal to 3 m is met. In the weft insertion process, a high-performance carbon fiber composite material rigid rapier is adopted, and a rapier head is optimized, so that the small-tow carbon fiber is reliably clamped in the weaving process with the width of more than or equal to 3 m, and the continuous weaving of the 1K and 3K carbon fibers is realized.
The first embodiment is as follows:
the warp and weft yarns adopt 1K carbon fibers, and the linear density is 66 tex; the width of the carbon fiber cloth is 3005mm, the density of warp yarns is 12.0 pieces/cm, the density of weft yarns is 12.0 pieces/cm, the total number of warp yarns is 3606, and the mass per unit area is 160g/m2The weave structure is eight satins.
Example two:
the warp and weft yarns adopt 3K carbon fibers, and the linear density is 198 tex; the width of the carbon fiber cloth is 3015mm, the density of warp yarns is 5.0 pieces/cm, the density of weft yarns is 5.0 pieces/cm, the total number of warp yarns is 1508 pieces, and the mass per unit area is 200g/m2The weave structure is twill.
Example three:
the warp yarns are made of 3K carbon fibers, the linear density is 198tex, the weft yarns are made of 1K carbon fibers, and the linear density is 66 tex; the width of the carbon fiber cloth is 3000mm, the density of warp yarns is 7.0 pieces/cm, the density of weft yarns is 10.0 pieces/cm, the number of warp yarns is 2100 pieces, and the mass per unit area is 205g/m2The weave structure is plain weave.
In other embodiments, the arrangement density of the warp yarns is not limited to the above embodiments, and may be any value between 4.0 and 12.5 yarns/cm, such as 4.0 yarns/cm, 6.0 yarns/cm, 8.0 yarns/cm, 9.0 yarns/cm, 10.0 yarns/cm, 11.0 yarns/cm, or 12.5 yarns/cm, etc. The arrangement density of the weft yarns is not limited to the above embodiment, and may be 4.0-12.5 yarns/cm, such as 4.0 yarns/cm, 6.0 yarns/cm, 7.0 yarns/cm, 8.0 yarns/cm, 9.0 yarns/cm, 11.0 yarns/cm or 12.5 yarns/cm. The number of warp and weft yarns may be the same or different. The woven carbon fiber cloth has a mass per unit area of 50-400g/m2The width of the fabric can be 3 meters, 3.5 meters or 4 meters, and the width range of 3-4 meters is also preferable.
The formed carbon fiber cloth with the width of more than or equal to 3 meters can be used for forming a three-dimensional fiber preform, and particularly the molded surface size of the carbon fiber cloth is more than 2 meters. In a specific embodiment, the fiber preform comprises a plurality of sequentially coated or stacked profile layers, and interlayer fibers connecting the plurality of profile layers; at least one of the profile surface layers is the wide carbon fiber cloth which is integrally coated or laid, and the fibers between the layers comprise one or more of short fiber clusters which are implanted between the layers by needling, continuous fiber bundles which are introduced by sewing, fiber bundles which are introduced by puncturing or bars.
Example four
The cylindrical fiber preform has the cross section outer circumference of 2.5 meters, the total length of 5 meters and the thickness of 50 millimeters, is formed by profiling and cutting the carbon fiber cloth formed in the first embodiment, each profile surface layer is formed by adding a layer of carbon fiber thin felt to a layer of carbon fiber cloth, and short fiber clusters between layers of a plurality of profile surface layers are coated and needled layer by layer to obtain the preform. Each profile layer is coated by the whole carbon fiber cloth, the lap joint parts of the carbon fiber cloth of the profile layers are staggered, and the in-plane tensile property of the formed prefabricated body is improved by at least more than 10% compared with that of a product with the same process structure.
EXAMPLE five
The outer circumference of the large-end section of the conical cylindrical fiber preform is 3 meters, the total length is 6 meters, the thickness is 30 millimeters, the carbon fiber cloth formed in the second embodiment is adopted for copying and cutting, each profile surface layer is formed by adding a layer of carbon fiber mesh wire and a layer of carbon fiber thin felt on two layers of carbon fiber cloth, short fiber clusters between layers of multilayer profile surface layers are coated and needled in a layer-by-layer mode, partial sewing is carried out, and continuous carbon fiber bundles are introduced, so that the preform is obtained. The whole carbon fiber cloth is coated to form a layer of structure, the lap joint parts of the carbon fiber cloth of the plurality of profile layers are uniformly staggered according to the circumference of the large end, and the in-plane tensile property of the formed prefabricated body is improved by at least more than 10% compared with that of a product with the same process structure.
In other embodiments, the shape, the profile size, and the like of the three-dimensional fiber preform are not limited to the above embodiments, and the configuration of the profile layer is not limited to the above embodiments, and for example, the three or more layers of carbon fiber cloth and one layer of thin felt may be combined, or the fiber may be formed by punching, and the interlayer fiber may be a carbon rod or a carbon fiber introduced by punching, and the like.
The utility model provides a 1K, 3K carbon fiber form the carbon cloth that the breadth is greater than or equal to 3 meters through weaving, and the reducible jumbo size profile modeling combined material component prefab shaping in-process is tailor and the lapped phenomenon, guarantees fibrous continuity in the high performance combined material component to promote combined material's mechanical properties.
The above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not limited, and although the embodiments of the present invention have been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions to the technical solutions of the embodiments of the present invention may be made without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a broad width carbon fiber cloth, includes many warp yarns and with many weft yarns that warp yarn interweaved, its characterized in that: the warp yarns and the weft yarns are coated carbon fiber bundles, and the width of the carbon fiber cloth is more than or equal to 3 meters.
2. The wide carbon fiber cloth according to claim 1, wherein: the surface layer of the coated carbon fiber bundle is sizing agent, the inner layer of the coated carbon fiber bundle is carbon fiber bundle, and the sizing agent accounts for 1.2% of the mass of the carbon fiber bundle.
3. The wide carbon fiber cloth according to claim 2, wherein: the carbon fiber bundle is mainly composed of 1000 carbon fiber monofilaments or 3000 carbon fiber monofilaments.
4. The wide carbon fiber cloth according to claim 3, wherein: the sizing agent is also covered on the surface layer of the carbon fiber monofilament.
5. The wide carbon fiber cloth according to claim 1, wherein: the arrangement density of the warp yarns is 4.0-12.5 yarns/cm.
6. The wide carbon fiber cloth according to claim 1, wherein: the arrangement density of the weft yarns is 4.0-12.5 yarns/cm.
7. The wide carbon fiber cloth according to claim 1, wherein: the weave structure of the carbon fiber cloth is plain weave, twill weave or satin weave.
8. The utility model provides a three-dimensional fibre preform, its profile size is greater than 2 meters, its characterized in that: the fiber preform comprises a plurality of sequentially coated or stacked profile layers and interlayer fibers for connecting the profile layers; the wide-width carbon fiber cloth according to any one of claims 1 to 7, wherein at least one of the profile layers is integrally coated or laid, and the fibers between the layers comprise one or more of staple fiber clusters, suture-introduced continuous fiber bundles, puncture-introduced fiber bundles or rods which are needle-punched and implanted between the layers.
9. The three-dimensional fiber preform according to claim 8, wherein: and overlapping parts of the plurality of layers of the wide carbon fiber cloth which are integrally coated or laid are staggered with each other.
10. The three-dimensional fiber preform according to claim 9, wherein: and the overlapped parts of the plurality of layers of integrally coated or laid wide carbon fiber cloth are uniformly staggered according to the size of the molded surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922058233.8U CN212194489U (en) | 2019-11-25 | 2019-11-25 | Wide carbon fiber cloth and three-dimensional fiber preform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058233.8U CN212194489U (en) | 2019-11-25 | 2019-11-25 | Wide carbon fiber cloth and three-dimensional fiber preform |
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| CN212194489U true CN212194489U (en) | 2020-12-22 |
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| CN201922058233.8U Active CN212194489U (en) | 2019-11-25 | 2019-11-25 | Wide carbon fiber cloth and three-dimensional fiber preform |
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