CN114775141A - Three-dimensional weaving method for continuous ceramic filaments - Google Patents
Three-dimensional weaving method for continuous ceramic filaments Download PDFInfo
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- CN114775141A CN114775141A CN202210328904.1A CN202210328904A CN114775141A CN 114775141 A CN114775141 A CN 114775141A CN 202210328904 A CN202210328904 A CN 202210328904A CN 114775141 A CN114775141 A CN 114775141A
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- tension
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- filament
- filaments
- continuous ceramic
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
- D03D25/005—Three-dimensional woven fabrics
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/247—Mineral
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
- D10B2101/08—Ceramic
Abstract
The invention relates to a three-dimensional weaving method of continuous ceramic filaments, which comprises the following steps: s1: unwinding the continuous ceramic filament package to obtain a continuous ceramic filament in a tension-free state; s2: doubling the continuous ceramic filaments in the tension-free state obtained in the step S1, and controlling the tension of each tow in the doubling process to obtain large tows with uniform tension; s3: rewinding the large tows doubled in the step S2 into a yarn storage device; s4: controlling the tension of the large tows in the yarn storage device, and carrying out three-dimensional weaving on the large tows by using a four-step method to obtain a prefabricated body. Compared with the prior art, the invention solves the problems that continuous ceramic filaments are required to be chopped or the tension control is not uniform in the doubling process when being processed into yarns, the tension of a yarn storage device is not controllable in three-dimensional weaving, and the like.
Description
Technical Field
The invention relates to the field of spinning and three-dimensional weaving, in particular to a three-dimensional weaving method for continuous ceramic filaments.
Background
The traditional ceramic filament needs to be chopped in the process of processing into yarns, and a filament aggregate with certain twist is obtained by utilizing spinning equipment for spinning cotton or hemp short filaments through the working procedures of opening, impurity removal, cotton mixing, cotton carding, roving, spun yarn and the like. The method has long flow and complex process, and the ceramic filaments are easy to brittle failure in the opening and carding process due to smooth surface and high filament rigidity.
In addition, the ceramic filaments need to be twisted in the process of processing the continuous ceramic filaments into yarns, and the phenomenon of uneven tension is easily generated in the weaving process of the continuous ceramic filaments with large tows, so that the impact resistance of the prefabricated body is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a continuous ceramic filament three-dimensional weaving method, which solves the problems that continuous ceramic filaments need to be chopped or tension control is not uniform in the doubling process when being processed into yarns, the tension of a yarn storage device is not controllable in three-dimensional weaving and the like.
The purpose of the invention can be realized by the following technical scheme:
in order to solve the problems, the invention provides a method for processing continuous ceramic filaments into yarns and three-dimensional braided fabrics, which comprises the steps of firstly winding and unwinding the continuous ceramic filaments to enable the ceramic filaments to be in a tension-free state, reducing damage to the continuous ceramic filaments due to traction and friction in the doubling process of the continuous ceramic filaments, then doubling the continuous ceramic filaments, controlling tension among filament bundles in the doubling process to obtain 4K-48K large filament bundles with uniform tension, further rewinding the large filament bundles to obtain a package suitable for three-dimensional braiding, and in the four-step method braiding process, changing the tension of a braiding area of a preform by controlling the yarn tension in a yarn storage device to obtain the preform with excellent performance.
The invention aims to protect a three-dimensional weaving method of continuous ceramic filaments, which specifically comprises the following steps:
s1: unwinding the continuous ceramic filament package to obtain a continuous ceramic filament in a tension-free state;
s2: doubling the continuous ceramic filaments in the tension-free state obtained in the step S1, and controlling the tension of each tow in the doubling process to obtain large tows with uniform tension;
s3: rewinding the large tows doubled in the step S2 into a yarn storage device;
s4: controlling the tension of the large tows in the yarn storage device, and carrying out three-dimensional weaving on the large tows by using a four-step method to obtain a prefabricated body.
Further, in S1, the continuous ceramic filaments are one or more of continuous alumina filaments, continuous zirconia filaments, continuous mullite filaments, continuous yttrium aluminum garnet filaments, continuous boron nitride filaments, and continuous silicon carbide filaments.
Further, in S1, the number of continuous ceramic filaments wound and unwound is 400 to 800.
Further, in S1, the unwinding is performed by an unwinder at an unwinding speed of 1-100 RPM.
Further, in S2, the number of the doubled yarns is 2-48.
Further, in S2, the tension compensator controls the yarn doubling process, and automatically adjusts the tension of each yarn bundle through the tension on-line detection function.
Further, in S2, the filament bundle is subjected to an oiling process after doubling to reduce entanglement between filaments and reduce the friction coefficient between the filament bundle and the machine member in the subsequent processing.
Further, in S2, the number of filaments of the large tow is 800-48000.
Further, in S3, the rewinding machine is one of a winder, a twisting machine, and a false twisting machine;
and S4, the tension of the large tows is ensured to be uniform in the weaving process through the tension adjusting capacity of the yarn storage device during automatic yarn releasing.
Further, in S4, the yarns are interwoven and oriented in multiple directions by a four-step process to form a non-laminated fabric, thereby forming a completely integrated structure and avoiding the lamination phenomenon of the conventional composite material.
Further, in S4, the three-dimensional knitting may be designed by changing a knitting angle, a filament orientation, a yarn type, a filament volume content, and the like.
Further, in S4, the final shape and size of the preform can be directly woven, the formed material can be multi-curved, I-shaped, conical, cylindrical and the like, and the prepolymer does not need subsequent processing technologies such as lamination, cutting and the like, so that damage to the final material is avoided.
The mechanism of the invention is as follows:
continuous ceramic fibers are strong but cannot withstand shear forces and thus macroscopically exhibit the characteristic of being strong but brittle. In general, the fiber mass moves in the air flow, and the speed of the striking mechanism is much higher than that of the fiber aggregate, so that the striking action is generated to cause oscillation, thereby loosening the fiber aggregate. The traditional ceramic fiber spinning needs to carry out short cutting, opening and carding on continuous ceramic fibers, the fibers are freely beaten in the opening process, and the continuous ceramic fibers are beaten by a high-speed beating machine member to be opened in a non-holding state.
Figure 1 is the atress analysis of continuous ceramic filament at the doubling in-process, the winder is mainly convoluteed, thereby let continuous ceramic filament have certain linear velocity, thereby the accessible control ceramic turns to the coefficient of friction between post and the filament and reduces the damage to continuous ceramic, and continuous ceramic filament initial state is tensionless, the damage to continuous ceramic filament has further been reduced, follow-up setting process of oiling, the coefficient of friction between continuous ceramic filament and the ceramic steering post further reduces, thereby the damage reduces greatly.
Compared with the prior art, the invention has the following technical advantages:
(1) the continuous ceramic filament bundle prepared by the invention can reach 4-48K large filament bundles, and the tension is uniform.
(2) The continuous three-dimensional weaving prefabricated part has excellent performance, can be applied in large scale and has better universality.
Drawings
Fig. 1 is a force analysis diagram of a three-dimensional knitted fabric in example 1.
FIG. 2 is a graph showing the tensile breaking strength of the preform prepared in example 1.
Detailed Description
The method provided by the invention can prepare the 4k-48k continuous ceramic filament bundle with uniform tension and the prefabricated body obtained by weaving the large filament bundle by a four-step method.
The purpose of the invention can be realized by the following technical scheme:
the invention provides a tension-free controllable spinning and three-dimensional weaving method, which comprises the following steps:
(1) the continuous ceramic filament package is unwound to obtain a tension-free continuous ceramic filament.
(2) Doubling the tension-free continuous ceramic filaments, oiling and controlling the tension of each tow in the doubling process to obtain large tows with uniform tension
(3) And rewinding the large silk bundles after doubling into a yarn storage device.
(4) Controlling the tension of the large tows in the yarn storage device, and carrying out three-dimensional weaving on the large tows by using a four-step method to obtain a prefabricated body with excellent performance.
In one embodiment of the present invention, in step (1), the continuous ceramic filaments comprise continuous alumina filaments, continuous zirconia filaments, continuous mullite filaments, continuous yttrium aluminum garnet filaments, continuous boron nitride filaments, continuous silicon carbide filaments, and ceramic blend filaments thereof.
In one embodiment of the present invention, in the step (1), the number of the continuous ceramic filaments is 400 to 1000.
In one embodiment of the invention, in the step (1), the unwinding mode is an unwinder unwinding speed of 1-100 RPM.
In one embodiment of the present invention, in step (1), the tensionless state refers to the state in which the filaments are relaxed, reducing the stacking between filaments and thus reducing the entanglement between filaments.
In one embodiment of the present invention, in the step (2), when the continuous ceramic filaments in a tensionless state are doubled, the number of doubled filaments is 2 to 48.
In one embodiment of the invention, in the step (2), the tension is controlled by a tension compensator, and the tension compensator has a tension online detection function and automatically adjusts the tension of each tow.
In one embodiment of the invention, in step (2), the tow is subjected to a oiling process to reduce entanglement between filaments, and the coefficient of friction with the work in subsequent processing.
In one embodiment of the present invention, in the step (2), the number of filaments of the large tow is 800 to 48000.
In one embodiment of the present invention, in the step (3), the rewinding machine is a winder, a twister or a false twister.
In one embodiment of the invention, in the step (3), the yarn storage device has a tension adjusting function and automatically discharges yarns, so that the tension is uniform in the weaving process.
In one embodiment of the present invention, in step (4), the four-step method means that the yarns are interwoven with each other and oriented in multiple directions to form a non-laminated fabric, so that a completely integrated structure is formed, and the lamination phenomenon of the traditional composite material is avoided.
In one embodiment of the present invention, in the step (4), the three-dimensional weaving may be designed for mechanical properties by changing a weaving angle, a filament orientation, a yarn type, a filament volume content, and the like.
In one embodiment of the invention, in the step (4), the final shape and size of the preform can be directly woven, the formed material can be a multi-curved surface, an I-shaped shape, a conical shape, a cylinder and the like, and the prepolymer does not need subsequent processing technologies such as lamination, cutting and the like, so that the final material is prevented from being damaged.
The invention is described in detail below with reference to the figures and the specific embodiments. In the technical scheme, characteristics such as preparation means, materials, structures or composition ratios and the like which are not explicitly described are all regarded as common technical characteristics disclosed in the prior art.
Example 1
And unwinding 400 continuous mullite filament bundles from a winding drum at the speed of 50RPM to obtain tension-free continuous mullite filament bundles, and doubling and oiling 10 continuous mullite filament bundles to obtain 4k large filament bundles. And (2) rewinding the continuous mullite filaments to obtain a package suitable for three-dimensional weaving, enabling the continuous mullite filaments to be uniformly positioned in a yarn storage device, and weaving by using a four-step method to obtain a multi-curved-surface mullite filament preform with excellent performance, wherein the tensile breaking strength of the preform is 630N, and FIG. 2 is a tensile breaking strength graph of the preform prepared in example 1.
Example 2
The 500 continuous alumina filament bundles were unwound from the winding drum at 60RPM to obtain tensionless continuous alumina filament bundles, and the 20 continuous alumina filament bundles were doubled and oiled to obtain 10k large bundles. And (3) rewinding the continuous alumina filament to obtain a package suitable for three-dimensional weaving, enabling the continuous alumina filament to be uniformly positioned in a yarn storage device in tension, and weaving by using a four-step method to obtain a T-shaped continuous alumina filament preform with excellent performance.
Example 3
800 continuous zirconia filament bundles were unwound from a winding drum at 60RPM to obtain tensionless continuous zirconia filament bundles, and 30 continuous zirconia filament bundles were combined and oiled to obtain 24k large filament bundles. And (3) rewinding the continuous zirconia filament to obtain a package suitable for three-dimensional weaving, enabling the continuous zirconia filament to be uniformly positioned in a yarn storage device in tension, and weaving by using a four-step method to obtain an I-shaped continuous zirconia filament prefabricated body with excellent performance.
Example 4
Unwinding 600 continuous yttrium aluminum garnet filament tows from a winding drum at the speed of 60RPM to obtain tension-free continuous mullite filament tows, and doubling and oiling 20 continuous yttrium aluminum garnet filament tows to obtain 12k large filament tows. And (3) rewinding the continuous yttrium aluminum garnet filaments to obtain a package suitable for three-dimensional weaving, enabling the continuous yttrium aluminum garnet filaments to be uniformly positioned in a yarn storage device in tension, and weaving by using a four-step method to obtain the cylindrical continuous yttrium aluminum garnet filament preform with excellent performance.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. A three-dimensional weaving method of continuous ceramic filaments is characterized by comprising the following steps:
s1: unwinding the continuous ceramic filament package to obtain a continuous ceramic filament in a tension-free state;
s2: doubling the continuous ceramic filaments in the tension-free state obtained in the step S1, and controlling the tension of each tow in the doubling process to obtain large tows with uniform tension;
s3: rewinding the large tows doubled in the step S2 into a yarn storage device;
s4: controlling the tension of the large tows in the yarn storage device, and carrying out three-dimensional weaving on the large tows by using a four-step method to obtain a prefabricated body.
2. The method of claim 1, wherein in S1, the continuous ceramic filament is a blended filament of one or more of continuous alumina filament, continuous zirconia filament, continuous mullite filament, continuous yttrium aluminum garnet filament, continuous boron nitride filament, and continuous silicon carbide filament.
3. The method according to claim 1, wherein the number of unwound continuous ceramic filaments in S1 is 400 to 800.
4. The three-dimensional weaving method of continuous ceramic filaments according to claim 1, characterized in that in S1, unwinding is performed by an unwinder at an unwinding speed of 1-100 RPM.
5. The three-dimensional weaving method of continuous ceramic filaments according to claim 1, characterized in that in S2, the number of the doubled filaments is 2-48.
6. The three-dimensional weaving method of continuous ceramic filaments according to claim 1, characterized in that in S2, the control is performed during the doubling process through a tension compensator, and the tension compensator automatically adjusts the tension of each filament bundle through a tension on-line detection function.
7. The method of claim 1, wherein in step S2, the filament bundle is oiled to reduce entanglement of filaments and reduce friction coefficient between filaments in subsequent processing.
8. The method of claim 1, wherein the number of the continuous ceramic filaments in the large tow is 800-48000 in S2.
9. The method of claim 1, wherein in S3, the rewinding machine is one of a winder, a twister, and a false twister;
and S4, the tension of the large tows is ensured to be uniform in the weaving process through the tension adjusting capacity of the yarn storage device during automatic yarn releasing.
10. The method of claim 1, wherein in step S4, yarns are interwoven and oriented in multiple directions to form a non-laminated fabric, thereby forming a completely integrated structure and avoiding the lamination phenomenon of conventional composite materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328904.1A CN114775141A (en) | 2022-03-30 | 2022-03-30 | Three-dimensional weaving method for continuous ceramic filaments |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210328904.1A CN114775141A (en) | 2022-03-30 | 2022-03-30 | Three-dimensional weaving method for continuous ceramic filaments |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058618A (en) * | 1990-06-29 | 1992-02-12 | 弗莱克斯林服务有限公司 | A kind of technology of strengthening composite members of making reaches employed filamentary material in above-mentioned technology |
| WO2006045257A2 (en) * | 2004-10-29 | 2006-05-04 | Meltit A.S. | Technical textile fabric |
| CN102336349A (en) * | 2010-07-27 | 2012-02-01 | 武汉纺织大学 | Single-cake double-silk spinning cake forming method for embedded spinning technology |
| CN109082748A (en) * | 2018-10-18 | 2018-12-25 | 山东兴国大成电子材料有限公司 | A kind of preparation method of ceramic fibre fire prevention woven fabric |
-
2022
- 2022-03-30 CN CN202210328904.1A patent/CN114775141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058618A (en) * | 1990-06-29 | 1992-02-12 | 弗莱克斯林服务有限公司 | A kind of technology of strengthening composite members of making reaches employed filamentary material in above-mentioned technology |
| WO2006045257A2 (en) * | 2004-10-29 | 2006-05-04 | Meltit A.S. | Technical textile fabric |
| CN102336349A (en) * | 2010-07-27 | 2012-02-01 | 武汉纺织大学 | Single-cake double-silk spinning cake forming method for embedded spinning technology |
| CN109082748A (en) * | 2018-10-18 | 2018-12-25 | 山东兴国大成电子材料有限公司 | A kind of preparation method of ceramic fibre fire prevention woven fabric |
Non-Patent Citations (1)
| Title |
|---|
| 北京维尼纶厂: "《现代纺织复合材料》", 长沙：国防科技大学出版社, pages: 320 - 322 * |
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