CN105803637A - Curved shallow-crossing linking structure carbon fiber/copper fiber carbon-based friction material and preparation method thereof - Google Patents
Curved shallow-crossing linking structure carbon fiber/copper fiber carbon-based friction material and preparation method thereof Download PDFInfo
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- CN105803637A CN105803637A CN201610227731.9A CN201610227731A CN105803637A CN 105803637 A CN105803637 A CN 105803637A CN 201610227731 A CN201610227731 A CN 201610227731A CN 105803637 A CN105803637 A CN 105803637A
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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
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
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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
- D03D15/40—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 structure of the yarns or threads
- D03D15/47—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 structure of the yarns or threads multicomponent, e.g. blended yarns or threads
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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
- D03D15/50—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 properties of the yarns or threads
- D03D15/593—Stiff materials, e.g. cane or slat
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
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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
- D10B2101/12—Carbon; Pitch
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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Abstract
The invention discloses a curved shallow-crossing linking structure carbon fiber/copper fiber carbon-based friction material and a preparation method thereof.The preparation method of the friction material comprises the following steps that 1, preparation of a curved shallow-crossing linking structure carbon fiber/copper fiber preform is conducted and includes (1) warp yarn preparation, (2) weft yarn preparation, (3) warping, (4) drafting and denting, (5) weaving and (6) take-up and let-off; 2, CVI deposition is performed: the carbon fiber/copper fiber perform is arranged in a CVI system for deposition to prepare the friction material.Long carbon fibers and copper fibers are mixed and woven for preparation of the friction material, the advantages of the two types of fibers are fully played and the shortcomings of the fibers are overcome to achieve the effect of overcoming their own shortcomings by learning from their strong points.
Description
Technical field
The present invention relates to materials processing technology field, especially relate to the manufacturing process of the curved carbon fiber of a kind of shallow friendship/copper fiber charcoal base composite friction material.
Background technology
Carbon fiber/copper fiber reinforced carbon base frication material preparation technology is simple, and the friction and wear behavior of good heat stability, mechanical performance and excellence is polluted less and had to cleaning, has vast potential for future development.There is a large amount of friction material hot-forming about carbon fiber hybrid in recent years, but mostly adopt short hybrid fiber.But have that structural integrity difference, designability be low, the shortcoming of easy delamination failure, it is difficult to bear big torsional moment, the defect easily lost efficacy under the harsh working condition such as high rotating speed, big pressure, low load condition in being only applied to, but on high-speed overload direction, the safety and stability of brakes is had higher requirement, how to overcome friction material drawbacks described above to become the key of solution problem.
2.5 dimension machine-knitted structure and Three-dimensional correction, including three-dimensional orthogonal, shallow friendship is curved and the various structures form such as deep friendship connection, important component part as three dimensional fabric structure, its great advantage is that warp thread can configure along with direction at an angle, fabric thickness direction, overcome delamination problems, add shear strength between increasing so that 2.5 dimension composites have the structure designability of excellence, overall shock resistance and fatigue performance.The method that this technique adopts carbon fiber and copper fiber shuffling simultaneously, not only mutually makes up mutual deficiency, but also reduces cost.
Summary of the invention
For the problems referred to above that prior art exists, the applicant provides the curved structural carbon fiber of a kind of shallow friendship/copper fiber charcoal base frication material and preparation method thereof.Carbon fiber and copper fiber are first carried out and twist with the fingers by the inventive method, make doubled yarn, then weave, the whole thickness direction of the through material of attachment warp forms 3-D solid structure, overcomes delamination problems, adds interlaminar shear strength, adopt copper fiber and carbon fiber and twist with the fingers technology simultaneously, greatly reduce production cost and adopt the mode of carbon deposit, making preparation method technique simple, it is simple to promoting.
Technical scheme is as follows:
A kind of curved structural carbon fiber of shallow friendship/copper fiber charcoal base frication material, the preparation method of this friction material comprises the steps:
(1) the curved structural carbon fiber of shallow friendship/copper fiber preform is prepared:
1. warp thread, using multiply the copper fiber after twisting with the fingers as warp thread；
2. weft yarn, using carbon fiber and copper fiber twisted stock as weft yarn；
3. warping, adopts bobbin cradle warp let-off mode, is wound on cheese by warp rolls, is introduced directly into small sample loom from bobbin cradle；
4. gaiting denting, adopt along wearing method, each circulation has 8 warp thread, sequentially through 8 corresponding brown frames；
5. weave, three-dimensional loom small model machine is weaved 2～10 layers of curved structural carbon fiber of shallow friendship/copper fibre fabric, attachment warp edge and thickness direction are 0～90 ° of direction configuration, and the through whole thickness direction of material, thickness is 2～10mm about, and footpath is close is 40/10cm, and filling density is 80～200/10cm, weaving tension appropriateness, prepares the curved carbon fiber of shallow friendship/copper fiber preform；The curved carbon fiber of the shallow friendship of described multilamellar/copper fiber preform, carbon fiber volume content is 10～50%, and copper fiber volume fraction is 20～60%；
6. the warp let-off is batched, the arrow shaft small model machine automatic rolling of employing and the warp let-off, and the sample cloth cutting weaved is got off, prepare described carbon fiber/copper fiber preform；
(2) CVI deposition:
Carbon fiber/copper fiber preform is placed in CVI system, precast body is placed in below air inlet, is then shut off fire door, first pass into nitrogen to get rid of furnace air and guarantee inert atmosphere；Again furnace temperature is raised to 950 DEG C by heating schedule heating, passes into diluent gas nitrogen and presoma propylene, be deposited under identical process conditions；Finally, after in-furnace temperature is down to room temperature, takes out sample, carry out grinding and prepare described friction material.
In described step (1), the preparation method of warp thread is: the 1650dtex copper fiber of 1～10 strand is carried out and twisted with the fingers, and the twist is 4～10 sth. made by twisting/10cm.
In described step (1), weft yarn adopts equation below to determine the mass fraction of carbon fiber and copper fiber:
In formula, Nt-represents the line density of yarn, tex；Gk-represents the yarn weight when official regain, g；
L-represents the length of yarn, m.
In described step (1), denting adopts metric system 40# reed, and a reed one is worn.
In described step (2), heating schedule is: when room temperature, carries out with the programming rate of 17～21 DEG C/h, under the state being warming up to 300 DEG C, is incubated 3h, then is warming up to 950 DEG C with the programming rate of 25～30 DEG C.
The flow of diluent gas nitrogen and presoma propylene 20cm respectively in described step (2)3/ s～30cm3/ s, 10～30cm3/s。
In described step (2), deposition process divides 4～6 cycles to carry out, and each cycle sedimentation time is 120h.
Useful the having the technical effect that of the present invention
(1) present invention adopts first and long carbon fiber and copper fiber are carried out shuffling is applied to the preparation of friction material.The advantage giving full play to two kinds of fibers the deficiency making up the other side reach the effect learnt from other's strong points to offset one's weaknesses.
(2) curved for shallow friendship connection structure enhancement techniques is applied to the preparation of friction material by the present invention first, the attachment warp of the carbon fiber of gained/copper fiber reinforced carbon base frication material forms 3-D solid structure at the whole thickness direction of material, overcome delamination problems, add interlaminar shear strength, there is the structure designability of excellence, overall shock resistance and fatigue performance, making friction material bending strength and shear strength obtain to be remarkably reinforced, mechanical strength is obviously improved.
(3) carbon deposit technology is introduced in friction material preparation by the present invention first, instead of the mode of phenolic resin hot pressing, and the technique making preparation is simpler, and product property is excellent, low production cost, it is simple to popularization and application.
(4) fibre reinforced friction material of the present invention has a best heat resistanceheat resistant decline performance, but the easy brittle fracture of carbon fiber and also carbon fiber is expensive；But copper fiber can overcome the heat sensitivity of resin, promote stable friction factor, reduce wear rate, and the compression performance of its composite is poor.The content increase of carbon fiber can improve the frictional behaviour of friction material, but the hydraulic performance decline of the mechanics of material and cost increase.And yarn strength can reduce afterwards along with the twist increase of yarn first increases.Along with the thickness of fabric increases, the globality of fabric is more good, and the mechanical property of fabric increases, but the space between fabric is reduced, and is unfavorable for the entrance of charcoal base, finally affect its friction and mechanical property, the each condition of the present invention reaches comprehensive balance, makes final friction material have good performance.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is specifically described.
Embodiment 1
A kind of curved structural carbon fiber of shallow friendship/copper fiber charcoal base frication material, the preparation method of this friction material comprises the steps:
(1) the curved structural carbon fiber of shallow friendship/copper fiber preform is prepared:
1. warp thread, is undertaken the 1650dtex copper fiber of 1 strand and twists with the fingers, and the twist is 4 sth. made by twisting/10cm, as warp thread；
2. weft yarn, using carbon fiber and copper fiber twisted stock as weft yarn；Weft yarn adopts equation below to determine the mass fraction of carbon fiber and copper fiber:
In formula, Nt-represents the line density of yarn, tex；Gk-represents the yarn weight when official regain, g；L-represents the length of yarn, m；In weft yarn, carbon fiber is 1:0 with the mixed ratio of copper fiber, is undertaken by 3 strands of carbon fibers and twisted stock is as weft yarn.
3. warping, adopts bobbin cradle warp let-off mode, is wound on cheese by warp rolls, is introduced directly into small sample loom from bobbin cradle；
3. gaiting denting, adopt along wearing method, each circulation has 8 warp thread, sequentially through 8 corresponding brown frames；
4. weave, three-dimensional loom small model machine is weaved the shallow friendship of two-layer curved connection structure carbon fiber copper fibre fabric, attachment warp configures along the direction with thickness direction being 20 °, and the through whole thickness direction of material, thickness is about 2mm, and footpath is close is 40/10cm, and filling density is 80/10cm, weaving tension appropriateness, is worth the curved carbon fiber of shallow friendship/copper fiber preform；Described carbon fiber and copper fiber are long filament, have certain weavability.The curved carbon fiber of the shallow friendship of described two-layer/copper fiber preform, carbon fiber volume content is 25%, and copper fiber volume fraction is 30%.
6. the warp let-off is batched, the arrow shaft small model machine automatic rolling of employing and the warp let-off, and the sample cloth cutting weaved is got off, prepare described carbon fiber/copper fiber preform.
(2) CVI deposition:
Carbon fiber/copper fiber preform is placed in CVI system, precast body is placed in above air inlet, is then shut off fire door, first pass into nitrogen to get rid of furnace air and guarantee inert atmosphere；Again by furnace temperature when room temperature, carry out with the programming rate of 17 DEG C/h, under the state being warming up to 300 DEG C, be incubated 3h, then be warming up to 950 DEG C with the programming rate of 25 DEG C, pass into diluent gas nitrogen and presoma propylene (20cm3/s、10cm3/ s), it is deposited under identical process conditions, 4 cycles carry out, and each cycle sedimentation time is 120h；Finally, after in-furnace temperature is down to room temperature, takes out sample, carry out grinding and prepare described friction material.The performance test of resulting materials is shown in Table 1.
Embodiment 2
A kind of curved structural carbon fiber of shallow friendship/copper fiber charcoal base frication material, the preparation method of this friction material comprises the steps:
(1) the curved structural carbon fiber of shallow friendship/copper fiber preform is prepared:
The 1650dtex copper fibers of 5 strands are carried out and twist with the fingers by 1. warp thread, and the twist is 7 sth. made by twisting/10cm, as warp thread；
2. weft yarn, using carbon fiber and copper fiber twisted stock as weft yarn；Weft yarn adopts equation below to determine
The mass fraction of carbon fiber and copper fiber:
In formula, Nt-represents the line density of yarn, tex；Gk-represents the yarn weight when official regain, g；L-represents the length of yarn, m；In weft yarn, carbon fiber is 2:1 with the mixed ratio of copper fiber, is undertaken by 2 strands of carbon fibers and 5 strands of copper fibers and twisted stock is as weft yarn.
3. warping, adopts bobbin cradle warp let-off mode, is wound on cheese by warp rolls, is introduced directly into small sample loom from bobbin cradle；
4. gaiting denting, adopt along wearing method, each circulation has 8 warp thread, sequentially through 8 corresponding brown frames；
5. weave, three-dimensional loom small model machine is weaved four layers of shallow friendship curved connection structure carbon fiber copper fibre fabric, attachment warp configures along the direction with thickness direction being 40 °, and the through whole thickness direction of material, thickness is about 2mm, and footpath is close is 40/10cm, and filling density is 160/10cm, weaving tension appropriateness, is worth the curved carbon fiber of shallow friendship/copper fiber preform；Described carbon fiber and copper fiber are long filament, have certain weavability.The described curved carbon fiber of four layers of shallow friendship/copper fiber preform, carbon fiber volume content is 20%, and copper fiber volume fraction is 40%.
6. the warp let-off is batched, the arrow shaft small model machine automatic rolling of employing and the warp let-off, and the sample cloth cutting weaved is got off, prepare described carbon fiber/copper fiber preform.
(2) CVI deposition:
Carbon fiber/copper fiber preform is placed in CVI system, precast body is placed in below air inlet, is then shut off fire door, first pass into nitrogen to get rid of furnace air and guarantee inert atmosphere；Again by furnace temperature when room temperature, carry out with the programming rate of 19 DEG C/h, under the state being warming up to 300 DEG C, be incubated 3h, then be warming up to 950 DEG C with the programming rate of 27 DEG C, pass into diluent gas nitrogen and presoma propylene (25cm3/s、20cm3/ s), it is deposited under identical process conditions, 5 cycles carry out, and each cycle sedimentation time is 120h；Finally, after in-furnace temperature is down to room temperature, takes out sample, carry out grinding and prepare described friction material.The performance test of resulting materials is shown in Table 1.
Embodiment 3
A kind of curved structural carbon fiber of shallow friendship/copper fiber charcoal base frication material, the preparation method of this friction material comprises the steps:
(1) the curved structural carbon fiber of shallow friendship/copper fiber preform is prepared:
The 1650dtex copper fibers of 10 strands are carried out and twist with the fingers by 1. warp thread, and the twist is 10 sth. made by twisting/10cm, as warp thread；
2. weft yarn, using carbon fiber and copper fiber twisted stock as weft yarn；Weft yarn adopts equation below to determine the mass fraction of carbon fiber and copper fiber:
In formula, Nt-represents the line density of yarn, tex；Gk-represents the yarn weight when official regain, g；L-represents the length of yarn, m；In weft yarn, carbon fiber is 1:2 with the mixed ratio of copper fiber, is undertaken by 1 strand of carbon fiber and 10 strands of copper fibers and twisted stock is as weft yarn.
3. warping, adopts bobbin cradle warp let-off mode, is wound on cheese by warp rolls, is introduced directly into small sample loom from bobbin cradle；
4. gaiting denting, adopt along wearing method, each circulation has 8 warp thread, sequentially through 8 corresponding brown frames；
5. weave, three-dimensional loom small model machine is weaved six layers of shallow friendship curved connection structure carbon fiber copper fibre fabric, attachment warp configures along the direction with thickness direction being 60 °, and the through whole thickness direction of material, thickness is about 8mm, and footpath is close is 40/10cm, and filling density is 200/10cm, weaving tension appropriateness, is worth the curved carbon fiber of shallow friendship/copper fiber preform；Described carbon fiber and copper fiber are long filament, have certain weavability.The described curved carbon fiber of six layers of shallow friendship/copper fiber preform, carbon fiber volume content is 15%, and copper fiber volume fraction is 50%.
6. the warp let-off is batched, the arrow shaft small model machine automatic rolling of employing and the warp let-off, and the sample cloth cutting weaved is got off, prepare described carbon fiber/copper fiber preform.
(2) CVI deposition:
Carbon fiber/copper fiber preform is placed in CVI system, precast body is placed in below air inlet, is then shut off fire door, first pass into nitrogen to get rid of furnace air and guarantee inert atmosphere；Again by furnace temperature when room temperature, carry out with the programming rate of 21 DEG C/h, under the state being warming up to 300 DEG C, be incubated 3h, then be warming up to 950 DEG C with the programming rate of 30 DEG C, pass into diluent gas nitrogen and presoma propylene (30cm3/s、30cm3/ s), it is deposited under identical process conditions, 6 cycles carry out, and each cycle sedimentation time is 120h；Finally, after in-furnace temperature is down to room temperature, takes out sample, carry out grinding and prepare described friction material.The performance test of resulting materials is shown in Table 1.
Table 1
The data drawn after tested, coefficient of friction is all stable about 0.3.Coefficient of friction is too high, and braking effect increases but abrasion can steeply rise, and temperature increases, and is unfavorable for the long-time use of brake material；Coefficient of friction is too small, brakes inconspicuous, poor effect；Abrasion quality is very low, it is ensured that the service life of material.
Claims (7)
1. the curved structural carbon fiber of shallow friendship/copper fiber charcoal base frication material, it is characterised in that the preparation method of this friction material comprises the steps:
(1) the curved structural carbon fiber of shallow friendship/copper fiber preform is prepared:
1. warp thread, using multiply the copper fiber after twisting with the fingers as warp thread；
2. weft yarn, using carbon fiber and copper fiber twisted stock as weft yarn；
3. warping, adopts bobbin cradle warp let-off mode, is wound on cheese by warp rolls, is introduced directly into small sample loom from bobbin cradle；
4. gaiting denting, adopt along wearing method, each circulation has 8 warp thread, sequentially through 8 corresponding brown frames；
5. weave, three-dimensional loom small model machine is weaved 2～10 layers of curved structural carbon fiber of shallow friendship/copper fibre fabric, attachment warp edge and thickness direction are 0～90 ° of direction configuration, and the through whole thickness direction of material, thickness is 2～10mm about, and footpath is close is 40/10cm, and filling density is 80～200/10cm, weaving tension appropriateness, prepares the curved carbon fiber of shallow friendship/copper fiber preform；The curved carbon fiber of the shallow friendship of described multilamellar/copper fiber preform, carbon fiber volume content is 10～50%, and copper fiber volume fraction is 20～60%；
6. the warp let-off is batched, the arrow shaft small model machine automatic rolling of employing and the warp let-off, and the sample cloth cutting weaved is got off, prepare described carbon fiber/copper fiber preform；
(2) CVI deposition:
Carbon fiber/copper fiber preform is placed in CVI system, precast body is placed in above air inlet, is then shut off fire door, first pass into nitrogen to get rid of furnace air and guarantee inert atmosphere；Again furnace temperature is raised to 950 DEG C by heating schedule heating, passes into diluent gas nitrogen and presoma propylene, be deposited under identical process conditions；Finally, after in-furnace temperature is down to room temperature, takes out sample, carry out grinding and prepare described friction material.
2. friction material according to claim 1, it is characterised in that in described step (1), the preparation method of warp thread is: the 1650dtex copper fiber of 1～10 strand is carried out and twisted with the fingers, and the twist is 4～10 sth. made by twisting/10cm.
3. friction material according to claim 1, it is characterised in that in described step (1), weft yarn adopts equation below to determine the mass fraction of carbon fiber and copper fiber:
In formula, Nt-represents the line density of yarn, tex；Gk-represents the yarn weight when official regain, g；L-represents the length of yarn, m.
4. friction material according to claim 1, it is characterised in that in described step (1), denting adopts metric system 40# reed, and a reed one is worn.
5. friction material according to claim 1, it is characterized in that in described step (2), heating schedule is: when room temperature, carry out with the programming rate of 17～21 DEG C/h, under the state being warming up to 300 DEG C, insulation 3h, then it is warming up to 950 DEG C with the programming rate of 25～30 DEG C.
6. friction material according to claim 1, it is characterised in that the flow of diluent gas nitrogen and presoma propylene 20cm respectively in described step (2)3/ s～30cm3/ s, 10～30cm3/s。
7. friction material according to claim 1, it is characterised in that in described step (2), deposition process divides 4～6 cycles to carry out, and each cycle sedimentation time is 120h.
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| CN114249602A (en) * | 2021-12-10 | 2022-03-29 | 宜兴市新立织造有限公司 | Preparation method and connection method of braided C/C composite brake disc |
| CN114857192A (en) * | 2022-06-06 | 2022-08-05 | 杜建华 | Carbon fiber reinforced carbon-based friction plate structure and preparation method thereof |
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| CN107191518B (en) * | 2017-06-07 | 2019-02-19 | 杭州萧山红旗摩擦材料有限公司 | A kind of composite fibre high-quality friction material and preparation method thereof |
| CN113604940A (en) * | 2021-08-08 | 2021-11-05 | 南京航空航天大学 | Rotary special-shaped body preform yarn tension combined control test method |
| CN113604940B (en) * | 2021-08-08 | 2022-05-03 | 南京航空航天大学 | Rotary special-shaped body preform yarn tension combined control test method |
| CN114249602A (en) * | 2021-12-10 | 2022-03-29 | 宜兴市新立织造有限公司 | Preparation method and connection method of braided C/C composite brake disc |
| CN114857192A (en) * | 2022-06-06 | 2022-08-05 | 杜建华 | Carbon fiber reinforced carbon-based friction plate structure and preparation method thereof |
| CN115724677A (en) * | 2022-11-25 | 2023-03-03 | 贵州省紫安新材料科技有限公司 | Preparation method of carbon-metal fiber mixed carbon-ceramic brake disc |
| CN116003149A (en) * | 2022-12-19 | 2023-04-25 | 贵州省紫安新材料科技有限公司 | Preparation method of carbon-copper fiber mixed-woven pantograph carbon slide plate composite material |
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