CN112760783A - High-heat-conductivity high-modulus carbon fiber fabric and preparation method thereof - Google Patents
High-heat-conductivity high-modulus carbon fiber fabric and preparation method thereof Download PDFInfo
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- CN112760783A CN112760783A CN202011554519.6A CN202011554519A CN112760783A CN 112760783 A CN112760783 A CN 112760783A CN 202011554519 A CN202011554519 A CN 202011554519A CN 112760783 A CN112760783 A CN 112760783A
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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
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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
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
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Abstract
The invention discloses a high-heat-conductivity high-modulus carbon fiber fabric and a preparation method thereof, wherein abrasion and overlarge bending angle of high-modulus fibers in a weaving process are reduced by restricting the surface roughness of a path, the roller radius of a fiber contact part, the curvature radius of a yarn guide hole and the like of the fibers in high-heat-conductivity high-modulus carbon fiber weaving equipment, and the generation of broken yarns and broken yarns is reduced, so that the successful weaving of the high-heat-conductivity high-modulus carbon fibers is realized, and meanwhile, the higher performance retention rate of the fibers is ensured.
Description
Technical Field
The invention belongs to the technical field of carbon fiber products, and particularly relates to a high-heat-conductivity high-modulus carbon fiber fabric and a preparation method thereof.
Background
The high-heat-conductivity high-modulus carbon fiber has excellent performances of high heat conductivity, ultrahigh modulus, low expansion, light weight, high strength and the like, is one of the best structural function integrated materials, and can be widely applied to the fields of heat dissipation such as high-precision integrated circuits and the like and the fields of satellite structural members and the like with high requirements on thermal dimensional stability. The traditional heat dissipation material uses metals such as copper, aluminum and the like, and the high density and the high thermal expansion coefficient of the material are difficult to meet the high precision requirement of partial fields, so that the high-heat-conductivity high-modulus carbon fiber composite material has one of the high-heat-conductivity candidate materials with development prospects.
The high-heat-conductivity high-modulus carbon fiber has the characteristics of high modulus, low compression modulus, small elongation at break, poor anti-shearing performance and poor flexibility, yarn breakage and fuzzing are easy to occur during weaving, abrasion, broken yarn and the like are easy to generate when the yarn passes through the surface of a roller, drafting and yarn interweaving, weaving forming is difficult, the traditional weaving process is not applicable any more, the weaving difficulty of the high-heat-conductivity high-modulus carbon fiber is increased, and the application of the high-heat-conductivity high-modulus carbon fiber cloth is hindered.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a high-thermal-conductivity high-modulus carbon fiber fabric and a preparation method thereof, which reduce the damage of fibers in the weaving process of the high-thermal-conductivity high-modulus carbon fiber, improve the performance retention rate of the carbon fibers in the high-thermal-conductivity high-modulus carbon fiber fabric, and promote the application of the high-thermal-conductivity high-modulus carbon fiber and products thereof.
In order to achieve the purpose, the invention provides the following technical scheme: the high-heat-conductivity high-modulus carbon fiber fabric is made of high-heat-conductivity high-modulus carbon fibers with the heat conductivity of 500W/(m.K) -1000W/(m.K) and the modulus of 700GPa-960GPa, and the high-heat-conductivity high-modulus carbon fibers are subjected to a pre-sizing procedure before weaving.
Further, the structure of the high-thermal-conductivity carbon fiber fabric is one of plain weave, twill weave and satin weave.
The invention also provides a preparation method of the high-heat-conductivity high-modulus carbon fiber fabric, which comprises the following specific steps:
s1, yarn releasing of warp: unwinding warp carbon fiber yarns from a multi-shaft bobbin creel, and leading the unwound warp carbon fiber yarns out of the multi-shaft bobbin creel through a smooth yarn guide rod combination;
s2, small-angle filament collection: leading warp carbon fiber yarns led out of the multi-shaft bobbin creel into yarn guide holes of a yarn collecting plate, wherein the inner walls of the yarn guide holes are smooth, and the width of the warp carbon fiber yarns is the same as the final width of the fabric through the yarn collecting plate;
s3, large roller warping and warp tension control: introducing the collected warp carbon fiber yarns into a tension compensation device, warping the warp carbon fiber yarns by the tension compensation device, and integrally adjusting the micro-tension of the warp carbon fiber yarns;
s4, lifting healds: warp carbon fiber yarns passing through the tension compensation device enter a braiding machine and pass through a heald frame;
s5, weft insertion and beating-up: weft yarns are placed on a weft yarn creel, unwound from a weft yarn bobbin, are inserted by a rigid rod, and are beaten by adopting a traditional beating-up mode to obtain the high-heat-conductivity high-modulus carbon fiber fabric;
and S6, coiling the fabric to obtain the high-heat-conductivity high-modulus carbon fiber fabric, and then coiling the carbon fiber fabric by using a fabric coiling device.
Further, in step S1, the multi-shaft creel adopts servo motor driven active yarn unwinding, the multi-shaft creel is provided with yarn bobbins, a single yarn bobbin can flexibly rotate, the rotation flexibility of the yarn bobbin can be finely adjusted, the yarn unwinding angle is smaller than 10 degrees, and the yarn unwinding tension is smaller than 5N per shaft.
Further, in step S1, the guide wire rod assembly includes a plurality of guide wire cross rods and a plurality of guide wire vertical rods, the guide wire cross rods are disposed outside the guide wire vertical rods, the diameters of the guide wire rods and the guide wire vertical rods are not less than 10mm, and the diameter of the guide wire cross rods is not less than 30 mm; the wire guide rod, the wire guide cross rod and the wire guide vertical rod are made of sand blasting hard chromium plating materials with the surface roughness of 3-10 mu m.
Further, in step S2, the yarn guide hole is circular, the surface curvature radius of the inner surface of the yarn guide hole is not less than 15mm, the inner surface of the yarn guide hole is made of a sand-blasting hard chromium-plating material with a surface roughness of 3 μm to 10 μm, and the included angle between the warp carbon fiber yarn and the axial direction of the yarn guide hole is less than 10 °.
Further, in step S3, tension compensation arrangement includes front roller, well roller, back roller and support frame, front roller, well roller and back roller all have the bearing, still have the spring on the bearing of well roller, front roller, well roller and back roller surface roughness are 3 mu m-10 mu m, and the diameter is not less than 60 mm.
Further, in step S4, the heald lifting mode of the heald frame is mechanical slow heald lifting, the heald eye is made of ceramic, the surface of the heald eye is subjected to sand blasting and hard chrome plating, the surface roughness of the heald eye is 3 μm to 10 μm, the curvature radius of the inner surface of the heald eye is not less than 5mm, and the maximum bending angle of the carbon fiber yarn at the heald eye is less than 5 °. Further, in step S6, when the fabric winding device is used for winding, release paper is further disposed between the adjacent fabric layers of the high-thermal-conductivity high-modulus carbon fiber fabric, and the release paper is used for preventing fabric damage caused by friction and extrusion between the adjacent fabric layers.
Further, in step S5, the warp carbon fiber yarn feeding speed is controlled by the fabric winding speed of the fabric winding device, and the weft density is controlled by the fabric winding speed of the fabric winding device at each beat-up.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention provides a preparation method of a high-heat-conductivity high-modulus carbon fiber fabric under the condition that high-heat-conductivity high-modulus carbon fibers are difficult to weave in the prior art, the surfaces of a yarn guide rod in a multi-shaft bobbin creel, a yarn guide rod combination and a rolling shaft in a tension compensation device are made to be smooth, and the inner surfaces of yarn guide holes in a yarn collecting plate and heddle eyes on a heald frame are also made to be smooth, so that the high-heat-conductivity high-modulus carbon fiber bundle is prevented from being broken and fluffed due to excessive friction when passing through the equipment, the yarn guide rod combination, the rolling shaft, the yarn guide holes and the heddle eyes, the damage of the high-heat-conductivity high-modulus carbon fiber bundle in the weaving process is reduced, the high-heat-conductivity high-modulus carbon fiber fabric can be smoothly woven, the flatness of the fabric is improved, and the performance retention rate of the carbon fibers, promote the application of the high-heat-conductivity high-modulus carbon fiber and the product thereof.
According to the preparation method, the diameter of the yarn guide rod in the yarn placing frame is not less than 10mm, the diameter of the yarn guide transverse rod in the yarn guide rod combination is not less than 30mm, and the diameter of the yarn guide vertical rod is not less than 10 mm.
In the preparation method, the surface roughness of the yarn guide rod, the yarn guide cross rod, the yarn guide vertical rod, the yarn guide hole, the roller and the heddle eye is 3-10 mu m, so that the adhesion of fibers on the surface of equipment caused by the condition that the surface of the equipment is too smooth or even mirror surface is avoided, the fiber damage caused by the too high surface roughness of the equipment is avoided, and the generation of fiber broken yarns and broken yarns is reduced.
In the preparation method, the required curvature radiuses of the thread guide hole and the heddle eye are respectively larger than 15mm and 5mm, and the bending condition of the fiber at the thread guide hole and the heddle eye is reduced, the generation of broken filaments and broken filaments is reduced, and the performance retention rate of the fiber is increased as much as possible by adopting larger curvature radiuses.
In the preparation method, the tension compensation device performs tension compensation on the high-heat-conduction high-modulus carbon fiber bundle by adopting a roller and spring mode, so that the aim of automatically compensating the tension of the high-heat-conduction high-modulus carbon fiber bundle is fulfilled during weaving, and the tightness and the flatness of the high-heat-conduction high-modulus carbon fiber bundle are ensured.
The high-heat-conductivity high-modulus carbon fiber fabric provided by the invention is made of high-heat-conductivity high-modulus carbon fibers with the heat conductivity of 500W/(m.K) -1000W/(m.K) and the modulus of 700GPa-960GPa, and the high-heat-conductivity high-modulus carbon fibers are subjected to a pre-sizing procedure before weaving to obtain the high-heat-conductivity high-modulus carbon fiber fabric which has excellent performances of high heat conductivity, ultrahigh modulus, low expansion, light weight, high strength and the like, and is one of the best structural and functional integrated materials.
Drawings
FIG. 1 is an overall view of the weaving process of the present invention;
FIG. 2 is a view showing the structure of a thread guide bar assembly;
FIG. 3 is a drawing of a filament collecting plate;
FIG. 4 is a drawing of a guide wire hole structure;
FIG. 5 is a view showing the construction of a tension compensating device;
figure 6 schematic view of the heald frame construction
FIG. 7 is a diagram of successful knitting;
in the drawings: 10-carbon fiber yarn; 20-a multi-spool creel; 21-a bobbin; 22-a wire guide rod; 30-wire guide rod combination; 31-a guide wire cross-bar; 32-a guidewire vertical rod; 40-a silk collecting plate; 41-wire guide holes; 50-a tension compensation device; 51-a front roller; 52-middle roller; 53-back roller; 54-a support frame; 60, knitting machine; 61-heald frame; 62-heddle eye; 62-rolling wheels; 70-a fabric take-up device; 80-carbon fiber yarn; 90-weft creel; 91-bobbin.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The embodiments of the present invention are not limited by the following examples, and any other changes, modifications, substitutions, combinations, simplifications, and adaptations which do not depart from the spirit and principle of the present invention should be construed as being equivalent substitutions and shall be included in the scope of the present invention.
As shown in figures 1 to 7, the high-heat-conductivity high-modulus carbon fiber fabric is prepared from high-heat-conductivity carbon fibers with the heat conductivity of 500W/(m.K) -1000W/(m.K) and the modulus of 700GPa-960GPa, and the high-heat-conductivity carbon fibers are subjected to a pre-sizing procedure before weaving, so that the sizing agent has the properties of wear resistance and high toughness.
Preferably, as shown in fig. 7, the structure of the highly heat conductive carbon fiber fabric is one of plain weave, twill weave and satin weave.
The invention provides a weaving method of a high-heat-conductivity high-modulus carbon fiber fabric, which comprises the following specific steps:
(1) and releasing the yarns by the warps. The warp carbon fiber yarns 10 are placed on a multi-shaft bobbin creel 20, the yarn unwinding angle is smaller than 10 degrees during unwinding, the yarn unwinding tension is smaller than 5N per shaft, a single bobbin 21 on the creel can rotate flexibly, the rotation flexibility of the single bobbin can be adjusted finely, after yarn guiding, tension testing is carried out on each warp carbon fiber yarn 10, the single warp tension is adjusted through the rotation flexibility of the bobbin 21, and the warp tensions are kept consistent.
Preferably, the bobbins 21 of the multi-shaft creel 20 of the present invention should be manufactured to ensure flexible rotation and no clamping stagnation, the total number of the bobbins 21 is 500, and the number of the bobbins 21 can be adjusted according to actual conditions.
Preferably, the multi-spool creel 20 of the present invention employs active filament payout driven by a servo motor.
Preferably, the yarn guide holes in the front end of the multi-shaft bobbin creel 20 are eliminated, the yarn guide holes are replaced by yarn guide rod combinations 30 which are perpendicular to each other and can flexibly rotate, the warp carbon fiber yarns 10 are led out of the multi-shaft bobbin creel 20 by the yarn guide rod combinations 30, as shown in fig. 2, each yarn guide rod combination 30 comprises a yarn guide cross rod 31 and a plurality of yarn guide vertical rods 32, the yarn guide cross rods 31 are arranged on the outer sides of the yarn guide vertical rods 32, namely the sides of the warp carbon fiber yarns 10 penetrating through the yarn guide vertical rods 32, the yarn guide rod combinations 30 can keep the warp carbon fiber yarns 10 flat, and meanwhile, the conditions of broken yarns and broken yarns generated when the warp carbon fiber yarns 10 pass through the yarn guide holes are reduced.
Preferably, the diameters of the guide wire rod 22 and the guide wire vertical rod 32 are not less than 10mm, the diameter of the guide wire transverse rod 31 is not less than 30mm, and the guide wire rod 22, the guide wire transverse rod 31 and the guide wire vertical rod 32 are all made of sand blasting hard chromium plating materials with the surface roughness of 3-10 μm.
(2) And (4) collecting the filaments. The warp carbon fiber yarns 10 are led out from the multi-shaft bobbin creel 20 and then pass through the filament collecting plate 40, so that the width of the warp carbon fiber yarns 10 is the same as the final width of the high-heat-conductivity high-modulus carbon fiber fabric;
preferably, as shown in fig. 3 and 4, a plurality of circular wire guiding holes 41 are uniformly distributed on the wire collecting plate 40, the inner walls of the wire guiding holes 41 are smooth, the curvature radius of the contact surface between the wire guiding holes 41 and the warp carbon fiber yarns 10 is not less than 15mm, and the wire guiding holes 41 are made of a sand blasting hard chromium plating material with the surface roughness of 3 μm to 10 μm.
Preferably, the length between the multi-axial creel 20 and the godet 40 is as long as possible, so that the included angle between the warp carbon fiber yarn 10 and the axial direction of the godet hole 41 is less than 10 degrees.
(3) Warping and warp tension control. The warp carbon fiber yarn 10 is collected by the yarn collecting plate 40 and then is led into the tension compensation device 50, as shown in fig. 5, the tension compensation device 50 adopts a roller and spring mode to compensate the tension of the warp carbon fiber yarn 10, the tension compensation device 50 comprises a front roller 51, a middle roller 52, a rear roller 53 and a support frame, the front roller 51, the middle roller 52 and the rear roller 53 are respectively provided with a bearing, the bearing of the middle roller 52 is also provided with a spring, the warp carbon fiber yarn 10 is warped through the three rollers, wherein the middle roller 52 can adjust the micro tension of the whole warp, the tension change of the warp caused by the up-and-down floating of a heald frame in the subsequent drafting process is offset, and the problem that the fabric flatness is poor due to the breakage or the over-small tension caused by the over-high tension in the weaving process of the warp carbon fiber yarn 10 is effectively.
Preferably, the surface roughness of the front roller 51, the middle roller 52 and the back roller 53 is 3 μm to 10 μm, and the diameter is not less than 60 mm.
(4) And (6) lifting the heald. The warp carbon fiber yarn 10 is passed through a heald frame 61 with a special heddle eyelet 62.
Preferably, the heddle eye 62 provided on the heddle frame 61 is composed of an upper roller and a lower roller, and the inner surface of the heddle eye 62 needs to be smooth.
Preferably, as shown in fig. 6, the heddle eye 62 is made of ceramic material, the surface of the heddle eye 62 is treated by sand blasting and hard chrome plating, the surface roughness of the heddle eye 62 is 3 μm-10 μm, the curvature radius of the contact surface of the heddle eye 62 and the warp carbon fiber yarn 10 is not less than 5mm, and the maximum bending angle of the yarn carbon fiber yarn 10 at the heddle eye 62 is less than 5 °
(5) And (4) weft insertion and beating-up. To reduce the weft friction, the weft is unwound from the bobbin 21 in the warp direction, without passing through the accumulator, directly unwound by the rigid bar. The weft yarns are beaten up in a traditional beating-up mode, the density of the weft yarns is set to be 33 bundles/10 cm, and the density of the weft yarns is controlled by the fabric winding speed of the fabric winding device 70 during each beating-up.
(6) And (6) winding the fabric. After the high-heat-conductivity high-modulus carbon fiber fabric is obtained, the fabric winding device 70 is used for winding, the fabric winding speed of the fabric winding device 70 controls the transmission speed of warp yarns of the warp yarn carbon fiber yarns 10, and the density of weft yarns is further controlled.
Preferably, the weft yarns are also carbon fiber yarns, and when the warp carbon fiber yarns 10 and the weft yarns are woven in the weaving machine 60, the mechanical slow heald lifting mode is adopted, the heald lifting speed and the heald lifting amplitude can be adjusted and controlled in the heald lifting mode, and high-heat-conductivity and high-modulus carbon fiber warp yarn brittle failure caused by overhigh heald lifting speed and overlarge warp opening angle is avoided.
Preferably, the dustproof grade of the electrical equipment in the weaving system provided by the invention is above IP65, thereby preventing broken filaments generated by high-heat-conductivity high-modulus carbon fibers from entering the electrical equipment in the weaving process, causing short circuit of the electrical equipment, causing damage to the electrical equipment and increasing the equipment cost.
Preferably, the maximum width of the knitting machine 60 is 2m, which can be set according to the requirement.
The following is an example of practical use of the high-thermal-conductivity high-modulus carbon fiber fabric weaving device provided by the invention:
example 1
The high-heat-conductivity high-modulus carbon fiber with the heat conductivity of 500W/(m.K) and the modulus of 800GPa is adopted as warp and weft yarns to weave plain carbon cloth, the linear density of the carbon fiber warp and weft yarns is 0.23g/m, the density of the warp and weft yarns is 42 bundles/10 cm, the width is 500mm, and the number of warp shafts is 210.
Weaving by adopting the preparation method, wherein the diameters of the wire guide rod 22 and the wire guide rod 32 are 10mm, the diameter of the wire guide rod 32 is 30mm, the curvature radius of the contact surface of the wire guide hole 41 and the warp carbon fiber yarn 10 is 15mm, and a sand blasting hard chromium plating material with the surface roughness of 5 mu m is used; carrying out sand blasting hard chrome plating treatment on the surface of the heddle eye 62, wherein the surface roughness is 10 mu m, and the curvature radius of the contact surface of the heddle eye 62 and the warp yarn is 5 mm; the surfaces of the front roller 51, the middle roller 52 and the rear roller 53 were subjected to sand blast hard chrome plating treatment, and the surface roughness was 10 μm and the diameter was 60 mm.
By using the method, high-heat-conductivity high-modulus carbon fiber weaving can be realizedThe fabric is successfully woven, and the yarn breaking condition is avoided. After weaving is finished, the obtained high-heat-conductivity high-modulus carbon fiber fabric has the width of 500mm and the surface density of 190g/m2The high-modulus and high-thermal-conductivity heat-conducting material has high modulus and high thermal-conducting property in two orthogonal directions. And testing the mechanical property and the thermal conductivity of the yarns before and after weaving to represent the performance retention rate of the yarns.
Table 1 yarn mechanical and thermal conductivity performance data before and after weaving
In order to represent the performance retention rate of the carbon fiber after weaving, the mechanical property and the thermal conductivity of the single-bundle carbon fiber yarn before weaving are tested; for comparison, after weaving, the yarns are carefully drawn out of the fabric, and the mechanical property and the thermal conductivity are tested; the test results are shown in table 1, and the test results show that the mechanical property of the woven fiber is reduced slightly, and the fiber performance retention rate is over 94%, which shows that the preparation method of the invention can reduce the abrasion of the fiber and the generation of an overlarge bending angle in the weaving process, reduce the generation of broken filaments and broken filaments, further realize the successful weaving of the high-heat-conductivity high-modulus carbon fiber, and simultaneously ensure the high performance retention rate of the fiber.
Claims (10)
1. The preparation method of the high-heat-conductivity high-modulus carbon fiber fabric is characterized by comprising the following specific steps of:
s1, yarn releasing of warp: the warp carbon fiber yarn (10) is unwound from a multi-shaft bobbin creel (20), and the unwound warp carbon fiber yarn (10) passes through a smooth yarn guide rod (22) and then is led out of the multi-shaft bobbin creel (20) through a yarn guide rod assembly (30);
s2, small-angle filament collection: leading warp carbon fiber yarns (10) led out of a multi-shaft bobbin creel (20) into yarn guide holes (41) of a yarn collecting plate (40), wherein the inner walls of the yarn guide holes (41) are smooth;
s3, large roller warping and warp tension control: the warp carbon fiber yarns (10) after filament collection are led into a tension compensation device (50), and the tension compensation device (50) warps the warp carbon fiber yarns (10) to integrally adjust the micro-tension of the warp carbon fiber yarns (10);
s4, lifting healds: warp carbon fiber yarns (10) passing through the tension compensation device (50) enter a knitting machine (60), and the warp carbon fiber yarns (10) pass through a heald frame (61);
s5, weft insertion and beating-up: the weft (80) is placed on a weft creel (90), the weft (80) is unwound from a weft bobbin (91), is inserted by a rigid rod, and is beaten up by adopting a traditional beating-up mode, so that the high-heat-conductivity high-modulus carbon fiber fabric is obtained;
s6, fabric winding: after the high-heat-conductivity high-modulus carbon fiber fabric is obtained, a fabric winding device (70) is adopted for winding.
2. The method for preparing the carbon fiber fabric with high thermal conductivity and high modulus according to claim 1, wherein in step S1, a multi-spool creel (20) adopts active filament unwinding driven by a servo motor, the multi-spool creel (20) is provided with spools (21), a single spool (21) can flexibly rotate, the rotational flexibility of the spool (21) can be finely adjusted, the filament unwinding angle is less than 10 degrees, and the filament unwinding tension is less than 5N per spool.
3. The method for preparing the high-thermal-conductivity high-modulus carbon fiber fabric as claimed in claim 1, wherein in step S1, the guide wire rod assembly (30) comprises a guide wire cross rod (31) and a guide wire vertical rod (32), the number of the guide wire vertical rods (32) is multiple, the guide wire cross rod (31) is arranged on the outer side of the guide wire vertical rod (32), the diameters of the guide wire rod (22) and the guide wire vertical rod (32) are not less than 10mm, and the diameter of the guide wire cross rod (31) is not less than 30 mm; the wire guide rod (22), the wire guide cross rod (31) and the wire guide vertical rod (32) are made of sand blasting hard chromium plating materials with the surface roughness of 3-10 mu m.
4. The method for preparing a high-thermal-conductivity high-modulus carbon fiber fabric according to claim 1, wherein in step S2, the yarn guide holes (41) are circular, the surface curvature radius of the inner surface of the yarn guide holes (41) is not less than 15mm, the inner surface of the yarn guide holes (41) is made of sand-blasting hard chrome plating material with the surface roughness of 3 μm to 10 μm, and the included angle between the warp carbon fiber yarns (10) and the axial direction of the yarn guide holes (41) is less than 10 °.
5. The method for preparing the carbon fiber fabric with high thermal conductivity and high modulus according to claim 1, wherein in step S3, the tension compensation device (50) comprises a front roller (51), a middle roller (52), a rear roller (53) and a support frame 54, the front roller (51), the middle roller (52) and the rear roller (53) are all provided with bearings, the bearings of the middle roller (52) are also provided with springs, and the surface roughness of the front roller (51), the surface roughness of the middle roller (52) and the surface roughness of the rear roller (53) are 3 μm-10 μm, and the diameter of the front roller (51), the surface roughness of the middle roller (52) and the surface roughness of the rear roller are not less than 60 mm.
6. The method for preparing the carbon fiber fabric with high thermal conductivity and high modulus as claimed in claim 1, wherein in step S4, the heald frame (61) is lifted mechanically and slowly, the heald eye (62) is made of ceramic, the surface of the heald eye (62) is treated by sand blasting and hard chrome plating, the surface roughness of the heald eye (62) is 3 μm to 10 μm, the radius of curvature of the inner surface of the heald eye (62) is not less than 5mm, and the maximum bending angle of the carbon fiber yarn (10) at the heald eye (62) is less than 5 °.
7. The method for preparing the high-thermal-conductivity high-modulus carbon fiber fabric as claimed in claim 1, wherein in step S6, when a fabric winding device (70) is used for winding, a release paper is further disposed between adjacent fabric layers of the high-thermal-conductivity high-modulus carbon fiber fabric, and the release paper is used for preventing fabric damage caused by friction and extrusion between the adjacent fabric layers.
8. The method for preparing the carbon fiber fabric with high thermal conductivity and high modulus according to claim 7, wherein in step S5, the transmission speed of the warp carbon fiber yarns (10) is controlled by the fabric take-up speed of the fabric take-up device (70), and the weft density is controlled by the fabric take-up speed of the fabric take-up device (70) at each beating-up.
9. The high-thermal-conductivity high-modulus carbon fiber fabric prepared by the preparation method of claim 1, wherein the carbon fiber fabric is prepared from high-thermal-conductivity high-modulus carbon fibers with the thermal conductivity of 500W/(m.K) -1000W/(m.K) and the modulus of 700GPa-960GPa, and the high-thermal-conductivity high-modulus carbon fibers are subjected to a pre-sizing procedure before weaving.
10. The high thermal conductivity and modulus carbon fiber fabric according to claim 9, wherein the structure of the high thermal conductivity and modulus carbon fiber fabric is one of plain weave, twill weave and satin weave.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896558A (en) * | 2021-11-10 | 2022-01-07 | 航天特种材料及工艺技术研究所 | High-performance thermal dredging composite material and preparation method thereof |
| CN115491778A (en) * | 2022-09-14 | 2022-12-20 | 湖北光谷实验室 | Device for integrating multiple electrodes in functional fiber and preparation method of functional fiber |
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2020
- 2020-12-24 CN CN202011554519.6A patent/CN112760783A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896558A (en) * | 2021-11-10 | 2022-01-07 | 航天特种材料及工艺技术研究所 | High-performance thermal dredging composite material and preparation method thereof |
| CN115491778A (en) * | 2022-09-14 | 2022-12-20 | 湖北光谷实验室 | Device for integrating multiple electrodes in functional fiber and preparation method of functional fiber |
| CN115491778B (en) * | 2022-09-14 | 2024-04-26 | 湖北光谷实验室 | Device for integrating multiple electrodes in functional fiber and preparation method of functional fiber |
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