CN105481413B - A kind of preparation method of metal mold C/C composite material carbon draw runners - Google Patents

A kind of preparation method of metal mold C/C composite material carbon draw runners Download PDF

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CN105481413B
CN105481413B CN201510909260.5A CN201510909260A CN105481413B CN 105481413 B CN105481413 B CN 105481413B CN 201510909260 A CN201510909260 A CN 201510909260A CN 105481413 B CN105481413 B CN 105481413B
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copper
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density
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CN105481413A (en
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肖鹏
方华婵
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Hangzhou leader new material Co., Ltd.
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
    • B60L5/20—Details of contact bow
    • B60L5/205—Details of contact bow with carbon contact members
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/74—Ceramic products containing macroscopic reinforcing agents containing shaped metallic materials
    • C04B35/76—Fibres, filaments, whiskers, platelets, or the like
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/608—Green bodies or pre-forms with well-defined density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient

Abstract

The present invention relates to a kind of preparation method of metal mold C/C composite material carbon draw runners, belong to use for electric locomotive technical field of material.The present invention is by 0 ° of individual layer without latitude charcoal cloth, after Carbon fibe net tire, graphite powder, copper material, 90 ° of individual layer circulate superposition successively without latitude charcoal cloth, Carbon fibe net tire, graphite powder, copper material, 0 ° of individual layer without latitude charcoal cloth, use the method for relay-type acupuncture that density is being made as 0.6~2.6g/cm perpendicular to laying direction introducing Carbon fibe beam32.5D Carbon fibe acupuncture entirety felts after, chemical vapor deposition pyrolytic carbon processing is carried out to it；Obtain C/C Cu composites；Finally by the size of design draw runner, gained C/C Cu composites are machined, and polymer impregnated charing process is carried out after reserved allowance, obtain finished product.Preparation technology of the present invention is simple, and prepared metal mold C/C composites have relatively low resistivity and high heat capacity.

Description

A kind of preparation method of metal mold C/C composite material carbon draw runners
Technical field
The present invention relates to a kind of preparation method of metal mold C/C composite material carbon draw runners, belong to use for electric locomotive material system Standby technical field.
Background technology
The bullet train of electric propulsion is by the carbon draw runner on pantograph carbon slide and contact line conducting wire CONTACT WITH FRICTION, is incited somebody to action Electric current on power network is transferred to locomotive electrical system, so as to supply high speed train motive, maintains locomotive normal operation.
At present, widely used carbon draw runner also has a kind of leaching metal mold carbon draw runner in addition to pure carbon material.Metal-impregnated carbon draw runner Operating mode than pure carbon draw runner is more harsh, should have lower resistivity, the provisional technical conditions TJ/CL328- of EMUs carbon slipper 2014 provide that its resistivity answers≤12 μ Ω m.
In use, the electric current passed through is up to 500A to carbon slipper, it may appear that the phenomenon of heating.When slide plate temperature is too high When, adhesive surface can be caused to ftracture, electric current effectively can not be passed to electric locomotive by slide plate, and when serious, carbon draw runner is directly from slide plate On come off, scratch netting twine, serious threat traffic safety.Therefore, excellent carbon draw runner should have high thermal capacity.
To ensure the safety of electric locomotive and reliable, metal mold carbon draw runner should possess low-resistivity, high heat capacity and it is low into This.At present, number of patent application 02138492.4 " carbon fiber reinforced slide plate for pantograph of electric locomotive and its manufacture method " is public One kind is opened using graphite, copper powder as filler, short carbon fiber is reinforcing material, the method that carbon draw runner is produced using mould pressing process, material The resistivity of material is higher, is 8~12.8 μ Ω m.200910046875.4 " netted sintering carbon-copper composite material pantograph pan And its manufacture method " mix copper powder, graphite powder, titanium valve etc. with resin, coated on carbon cloth, through hot-press solidifying, sinter Carbon draw runner is prepared for etc. process, its resistivity is 9.6~18.8 μ Ω m.Number of patent application 201310111822.2 " it is a kind of by Pantograph slider is with composite and preparation method thereof " disclose it is a kind of using carbon fiber and the 3 D weaving body of copper wire, through chemistry Carbon draw runner prepared by vapour deposition and resin Impregnation carbonization process, resistivity is 5.7~8.1 μ Ω m.
The content of the invention
The technical problems to be solved by the invention are for existing metal mold carbon fiber slide plate resistivity is big, process costs are high The problem of, there is provided it is a kind of be easy to industrial applications, low-resistivity, inexpensive, high heat capacity metal mold C/C composite woods Expect the preparation method of carbon draw runner.
A kind of preparation method of metal mold C/C composite material carbon draw runners of the present invention, comprises the steps：
Step 1
By 0 ° of individual layer without latitude charcoal cloth, Carbon fibe net tire, graphite powder, copper material, 90 ° of individual layer are without latitude charcoal cloth, Carbon fibe net tire, stone After ink powder, copper material, 0 ° of individual layer circulate superposition successively without latitude charcoal cloth, drawn using the method for relay-type acupuncture perpendicular to laying direction It is 0.6~2.6g/cm to enter Carbon fibe beam density is made32.5D Carbon fibe acupuncture entirety felts；The copper material is selected from copper powder, copper One kind in net, short copper wire, in the 2.5D Carbon fibes acupuncture entirety felt, the weight/mass percentage composition of graphite powder is 1%~10%； The weight/mass percentage composition of copper material is 20-90%, is preferably 25-75%, more preferably 50-75%；
Step 2
Using 2.5D Carbon fibe acupuncture entirety felts obtained by step 1 as framework, framework is carried out at chemical vapor deposition pyrolytic carbon Reason；Obtain C/C-Cu composites；The density of the C/C-Cu composites is 1.5-2.2 times of framework density, is preferably 1.5-1.8 again, more preferably 1.5-1.6 times；
Step 3
By the size of design draw runner, C/C-Cu composites obtained by step 2 are machined, and more than reserved processing Polymer impregnated-charing process is carried out after amount, obtains finished product；The finished product density for step 2 C/C-Cu composites it is close 1.02-1.15 times, preferably 1.04-1.12 times, more preferably 1.10-1.12 times of degree.
In step 1 of the present invention, used graphite powder is crystalline flake graphite or granular graphite, and the granularity of the graphite powder is small In equal to 150 microns, preferably 38-150 microns, more preferably 50-150 microns.
In step 1 of the present invention, used copper powder is red copper powder, copper alloy powder, and granularity is 100~325 mesh, is used The mesh number of copper mesh is 20~100 mesh, a diameter of 0.05~0.2mm of silk, the material of copper mesh are selected from red copper, phosphorus green grass or young crops used in copper mesh One kind in copper, brass, a diameter of 0.05~0.2mm of short copper wire is used, length is 2~20mm, and the material of short copper wire is selected One kind from red copper, phosphor bronze, brass.
In step 2 of the present invention, the conditional parameter of chemical vapor deposition pyrolytic carbon processing is：
Carbon-source gas are selected from least one of propylene, natural gas, methane；
Diluent gas is selected from least one of nitrogen, hydrogen；
The volume ratio of carbon-source gas and diluent gas is 08.-1.2:2.8-3.2, be preferably 1:3.
In step 3 of the present invention, polymer impregnated liquid used in polymer impregnated-charing process is resin solution.Preferably drip The mixed solution or furane resins solution of blue or green and furane resins composition.
In step 3 of the present invention, by the size of design draw runner, machinery is carried out to C/C-Cu composites obtained by step 2 and added Work, and after reserved allowance, it is placed in 40-80 DEG C, is preferably 50-70 DEG C, more preferably 55-65 DEG C polymer impregnated In liquid, after impregnation 1-3 hours by the way of impregnating by pressure, it is small to be warming up to 180-210 DEG C of progress curing process 2.5-3.5 When；Carry out carbonization treatment after the completion of solidification, during carbonization treatment, it is 830-880 DEG C to control temperature, and the time of single carbonization treatment is 40-60 hours；The circulate operation in the way of dipping/solidification/carbonization treatment is until obtain finished product.
In step 3 of the present invention, during using impregnating by pressure, it is 1-3MPa to control impregnation pressure.
Principle and advantage
(1) synergy of the invention by appropriate various raw material and preparation technology, obtains unexpected result, Especially in prepared material, in the case where copper content is suitable, its resistivity is decreased significantly compared with current material.
(2) present invention is simple using technique, and process costs are low, can significantly improve the competitiveness of product, are easy to industrial metaplasia Production.
Specific implementation
Comparative example 1：Number of patent application 201310111822.2 " a kind of pantograph pan composite and its preparation side It is 25% that method ", which is prepared for copper wire mass content, blank density 1.0g/cm3Felt body, by chemical vapor deposition and dipping- Carbonization treatment, the sample that final densities are 1.96g/cm3 is obtained, its resistivity is 5.67 μ Ω m, is shown in Table 1.
Comparative example 2：
Density is used as 0.56g/cm32.5D Carbon fibe acupuncture entirety felts be precast body, pass through chemical vapor infiltration work Density prepared by skill and resin dipping-charring process is 1.74g/cm3C/C composites, specific performance is shown in Table 1.
Embodiment 1：
Brass wire diameter is used as 0.12mm, mesh number is 40 mesh, red copper net, the graphite powder (quality hundred that mass content is 23% Point content for 10%), carbon fiber, it is 0.94g/cm that density, which is made,32.5D Carbon fibe acupuncture entirety felts, pass through chemical vapor infiltration It is 1.72g/cm that saturating technique, which is prepared for density,3C/C composites, by the dipping of resin twice-charring process, be prepared for density For 1.96g/cm3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, by 0 ° of laminated cloth of individual layer, net plies, graphite powder (granularity be 100 microns), red copper net, 90 ° of laminated cloths of individual layer, net plies, 0 ° of graphite powder (granularity is 100 microns), red copper net, individual layer laminated cloth circulate superposition successively, then, using the side of relay-type acupuncture It is 0.94g/cm that density, which is made, in method3Carbon fibe precast body.
(2) propylene is used as carbon-source gas, and nitrogen is carrier gas, and the volume ratio of propylene and nitrogen is 1:3, using chemical gas Phase osmosis sinks to accumulating pyrolytic carbons to precast body at 850 DEG C, and density is made in deposition after 320 hours be 1.78g/cm3C/C it is compound Material.
(3) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 60 DEG C, dipping pressure Power is 2MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 850 DEG C.After circulation twice, extrudate density reaches 1.96g/cm3, specific performance is shown in Table 1。
Embodiment 2：
Density is used as 1.25g/cm32.5D Carbon fibe acupuncture entirety felts be precast body, wherein, include in precast body Copper powder, copper powder are that -200 mesh are electrolysed red copper powder, mass content 71%；The weight/mass percentage composition of graphite powder is 5%.Pass through chemistry It is 2.24g/cm that gas-phase permeation technique, which is prepared for density,3C/C composites, by the dipping of resin three times-charring process, prepare Density is 2.47g/cm3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire, nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth.By 0 ° of laminated cloth of individual layer, net plies, graphite powder (granularity is 150 microns), red copper powder (granularity is 75 microns), 90 ° of individual layer 0 ° of laminated cloth, net plies, graphite powder (granularity is 150 microns), red copper powder (granularity is 75 microns), individual layer laminated cloth circulate successively Superposition, then, uses the method for relay-type acupuncture that density is made as 1.25g/cm3Carbon fibe precast body.
(2) propylene is used as carbon-source gas, and hydrogen is carrier gas, and the volume ratio of propylene and hydrogen is 1:3, using chemical gas Phase osmosis sinks to accumulating pyrolytic carbons to precast body at 850 DEG C, and density is made in deposition after 380 hours be 2.24g/cm3C/C it is compound Material.
(3) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample is preheated to 70 DEG C, during dipping, controls dipping temperature For 60 DEG C, impregnation pressure 2MPa, the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours. Turn retort after solidification and carry out charing process, carbonization temperature is 850 DEG C.After circulating dipping/carbonization three times, extrudate density reaches 2.47g/cm3, specific performance is shown in Table 1.
Embodiment 3：
Density is used as 0.89g/cm32.5D Carbon fibe acupuncture entirety felts be precast body, wherein, include in precast body Brass wire, a diameter of 0.2mm of short brass wire, length 5mm, mass content 50%, the weight/mass percentage composition of graphite powder are 2%；It is 1.92g/cm to be prepared for density by chemical vapor infiltration technique3C/C composites, by resin three times dipping- Charring process, it is 2.21g/cm to be prepared for density3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, by 0 ° of laminated cloth of individual layer, net plies, graphite powder (granularity be 38 microns), (a diameter of 0.1mm, length are short copper wire 20mm), 90 ° of laminated cloths of individual layer, net plies, graphite powder (granularity be 150 microns), (a diameter of 0.1mm, length are short copper wire 20mm), 0 ° of laminated cloth of individual layer circulates superposition successively, then, uses the method for relay-type acupuncture that density is made as 0.89g/cm3's Carbon fibe precast body.
(2) propylene is used as carbon-source gas, and nitrogen is carrier gas, and the volume ratio of propylene and nitrogen is 1:3, using chemical gas Phase osmosis sinks to accumulating pyrolytic carbons to precast body at 850 DEG C, and density is made in deposition after 380 hours be 1.92g/cm3C/C it is compound Material.
(3) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 60 DEG C, dipping pressure Power is 2MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 850 DEG C.After circulation three times, extrudate density reaches 2.21g/cm3, specific performance is shown in Table 1。
Embodiment 4：
Density is used as 2.40g/cm32.5D Carbon fibe acupuncture entirety felts be precast body, wherein, containing short in precast body (mass ratio of short copper wire and red copper powder is 70 for copper wire and red copper powder：30), a diameter of 0.2mm of short copper wire, length are 10mm, mass content 74%, red copper powder are -100 mesh red copper powder, mass content 15%.The weight/mass percentage composition of graphite powder For 2%.It is 3.17g/cm to be prepared for density by chemical vapor infiltration technique3C/C composites, by resin three times soak Stain-charring process, it is 3.46g/cm to be prepared for density3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, by 0 ° of laminated cloth of individual layer, net plies, graphite powder (granularity is 38 microns), short copper wire, 90 ° of laminated cloths of individual layer, net tire 0 ° of layer, graphite powder (granularity is 38 microns), red copper powder, individual layer laminated cloth circulate superposition successively, then, using relay-type acupuncture It is 2.40g/cm that density, which is made, in method3Carbon fibe precast body.
(2) propylene is used as carbon-source gas, and nitrogen is carrier gas, and the volume ratio of propylene and nitrogen is 1:3, using chemical gas Phase osmosis sinks to accumulating pyrolytic carbons to precast body at 850 DEG C, and density is made in deposition after 380 hours be 3.17g/cm3C/C it is compound Material.
(3) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 60 DEG C, dipping pressure Power is 2MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 850 DEG C.After circulation three times, extrudate density reaches 3.46g/cm3, specific performance is shown in Table 1。
Embodiment 5：
Brass wire diameter is used as 0.12mm, mesh number is 40 mesh, and mass content is 68% phosphor-copper net, a diameter of 0.12mm, Length is 12mm, the short phosphorus copper wire, graphite powder (weight/mass percentage composition 6%), carbon fiber that mass content is 14%, density is made For 1.96g/cm32.5D Carbon fibe acupuncture entirety felts, it is 3.0g/cm to be prepared for density by chemical vapor infiltration technique3C/ C composite, by the dipping of resin twice-charring process, it is 3.18g/cm to be prepared for density3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, by 0 ° of laminated cloth of individual layer, net plies, graphite powder (granularity be 75 microns), phosphor-copper net, 90 ° of laminated cloths of individual layer, net plies, 0 ° of graphite powder (granularity is 75 microns), short phosphorus copper wire, individual layer laminated cloth circulate superposition successively, then, using relay-type acupuncture It is 1.96g/cm that density, which is made, in method3Carbon fibe precast body.
(2) propylene is used as carbon-source gas, and nitrogen is carrier gas, and the volume ratio of propylene and nitrogen is 1:3, using chemical gas Phase osmosis sinks to accumulating pyrolytic carbons to precast body at 850 DEG C, and density is made in deposition after 380 hours be 3.0g/cm3C/C it is compound Material.
(3) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 60 DEG C, dipping pressure Power is 2MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 850 DEG C.After circulation twice, extrudate density reaches 3.18g/cm3, specific performance is shown in Table 1。
Embodiment 6：
Brass wire diameter is used as 0.12mm, mesh number is 40 mesh, red copper net, the graphite powder (quality hundred that mass content is 90% Point content for 3%), carbon fiber, it is 1.92g/cm that density, which is made,32.5D Carbon fibe acupuncture entirety felts, pass through chemical vapor infiltration It is 2.98g/cm that saturating technique, which is prepared for density,3C/C composites, by the dipping of resin twice-charring process, be prepared for density For 3.21g/cm3C/C composites.
C/C pantograph draw runners in the present embodiment are mainly prepared by following steps：
(1) first, net tire and nothing is made in PAN types T700 (12K) Carbon fibe produced using toray company (Toray) Latitude cloth, by 0 ° of laminated cloth of individual layer, net plies, graphite powder (granularity be 120 microns), red copper net, 90 ° of laminated cloths of individual layer, net plies, 0 ° of graphite powder (granularity is 120 microns), red copper net, individual layer laminated cloth circulate superposition successively, then, using the side of relay-type acupuncture It is 1.92g/cm that density, which is made, in method3Carbon fibe precast body.
(2) propylene is used as carbon-source gas, and nitrogen is carrier gas, and the volume ratio of propylene and nitrogen is 1:3, using chemical gas Phase osmosis sinks to accumulating pyrolytic carbons to precast body at 850 DEG C, and density is made in deposition after 380 hours be 2.98g/cm3C/C it is compound Material.
(3) the above-mentioned C/C draw runners cut into are put into vacuum-pressure impregnating autoclave using the graphite frock of design, with furan Furane resins is impregnating agent, using high-pressure impregnation PROCESS FOR TREATMENT.Before dipping, sample should be preheated first, and dipping temperature is 60 DEG C, dipping pressure Power is 2MPa, and the dwell time is 1.5 hours.Afterwards, 200 DEG C are warming up to, insulation is solidified for about 3 hours.Turn charing after solidification Stove carries out charing process, and carbonization temperature is 850 DEG C.After circulation twice, extrudate density reaches 3.21g/cm3, specific performance is shown in Table 1。
Comparing embodiment 1 can be seen that in the case where copper content and sample rate are suitable with comparative example 1, this technique Resistivity reduces about 50%, significant effect.Compared with C/C slide plates (comparative example 2), the resistivity of metal mold C/C slide plates reduces More than 80%, volumetric heat capacity improves 20~50%.Found by embodiment, further improve the content of copper, though Right change in resistance is little, but the thermal capacity of material is significantly improved, and this is significant to carbon slipper.
The test result of the C/C pantograph carbon draw runners of table 1

Claims (9)

  1. A kind of 1. preparation method of metal mold C/C composite material carbon draw runners, it is characterised in that；Comprise the steps：
    Step 1
    By 0 ° of individual layer without latitude charcoal cloth, Carbon fibe net tire, graphite powder, copper material, 90 ° of individual layer are without latitude charcoal cloth, Carbon fibe net tire, graphite After powder, copper material, 0 ° of individual layer circulate superposition successively without latitude charcoal cloth, introduced using the method for relay-type acupuncture perpendicular to laying direction It is 0.6~2.6g/cm that density, which is made, in Carbon fibe beam32.5D Carbon fibe acupuncture entirety felts；The copper material be selected from copper powder, copper mesh, One kind in short copper wire, in the 2.5D Carbon fibes acupuncture entirety felt, the weight/mass percentage composition of graphite powder is 1%~10%；Copper The weight/mass percentage composition of material is 20-90%；In step 1, used graphite powder is crystalline flake graphite or granular graphite, the stone The granularity of ink powder is less than or equal to 150 microns；
    Step 2
    Using 2.5D Carbon fibe acupuncture entirety felts obtained by step 1 as framework, chemical vapor deposition pyrolytic carbon processing is carried out to framework； Obtain C/C-Cu composites；The density of the C/C-Cu composites is 1.5-2.2 times of framework density；
    Step 3
    By the size of design draw runner, C/C-Cu composites obtained by step 2 are machined, and after reserved allowance Polymer impregnated-charing process is carried out, obtains finished product；The finished product density for step 2 C/C-Cu composite densities 1.02-1.15 again.
  2. A kind of 2. preparation method of metal mold C/C composite material carbon draw runners according to claim 1, it is characterised in that：Step In rapid one, in the 2.5D Carbon fibes acupuncture entirety felt, the weight/mass percentage composition of copper material is 25-75%.
  3. A kind of 3. preparation method of metal mold C/C composite material carbon draw runners according to claim 2, it is characterised in that：Step In rapid one, in the 2.5D Carbon fibes acupuncture entirety felt, the weight/mass percentage composition of copper material is 50-75%.
  4. A kind of 4. preparation method of metal mold C/C composite material carbon draw runners according to claim 1, it is characterised in that：Step In rapid one, used copper powder is red copper powder or copper alloy powder, and granularity is 100~325 mesh, use the mesh number of copper mesh for 20~ A diameter of 0.05~0.2mm of silk used in 100 mesh, copper mesh, the material of copper mesh are red copper, phosphor bronze or brass, use short copper A diameter of 0.05~0.2mm of silk, length are 2~20mm, the one kind of the material of short copper wire in red copper, phosphor bronze, brass.
  5. A kind of 5. preparation method of metal mold C/C composite material carbon draw runners according to claim 1, it is characterised in that：Step In rapid two, the conditional parameter of chemical vapor deposition pyrolytic carbon processing is：
    Carbon-source gas are selected from least one of propylene, natural gas, methane；
    Diluent gas is selected from least one of nitrogen, hydrogen；
    The volume ratio of carbon-source gas and diluent gas is 08.-1.2:2.8‐3.2.
  6. A kind of 6. preparation method of metal mold C/C composite material carbon draw runners according to claim 1, it is characterised in that：Step In rapid two, the density of the C/C-Cu composites is 1.5-1.8 times of framework density.
  7. A kind of 7. preparation method of metal mold C/C composite material carbon draw runners according to claim 1, it is characterised in that：Step In rapid three, polymer impregnated liquid used in polymer impregnated-charing process is resin solution.
  8. A kind of 8. preparation method of metal mold C/C composite material carbon draw runners according to claim 7, it is characterised in that：Step In rapid three, by the size of design draw runner, C/C-Cu composites obtained by step 2 are machined, and reserved allowance Afterwards, it is placed in 40-80 DEG C of polymer impregnated liquid, after impregnation 1-3 hours by the way of impregnating by pressure, is warming up to 180- 210 DEG C of progress curing process 2.5-3.5 hours；Carry out carbonization treatment after the completion of solidification, during carbonization treatment, it is 830- to control temperature 880 DEG C, the time of single carbonization treatment is 40-60 hours；The circulate operation in the way of dipping/solidification/carbonization treatment is until obtain To obtaining finished product.
  9. A kind of 9. preparation method of metal mold C/C composite material carbon draw runners according to claim 8, it is characterised in that：Step In rapid three, during using impregnating by pressure, it is 1-3MPa to control impregnation pressure.
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CN106585388B (en) * 2016-12-07 2020-01-14 中南大学 Composite material for pantograph slide plate of electric vehicle and preparation method thereof
CN107719128B (en) * 2017-09-29 2024-01-23 江苏天鸟高新技术股份有限公司 Carbon fiber composite metal material needled preform and preparation method thereof
CN109372916B (en) * 2018-09-03 2020-06-30 湖南金天铝业高科技股份有限公司 Preparation method of ceramic reinforced carbon/carbon composite brake disc
CN111320485B (en) * 2020-02-25 2021-08-10 中南大学 Preparation method of C/C-Cu composite material
CN113119343B (en) * 2021-04-08 2023-03-24 山东非金属材料研究所 Preparation method of low-ablation-rate heat-proof composite material and product thereof
CN113183565B (en) * 2021-06-03 2023-02-07 河南工业大学 Preparation method of carbon fiber reinforced sliding current collecting material for high-speed train

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CN101492015A (en) * 2009-03-02 2009-07-29 浙江师范大学 Reticular lamination carbon-copper composite material pantograph pan and manufacturing method
CN104691338A (en) * 2014-12-20 2015-06-10 中南大学 Producing method of copper wire mesh modified carbon/carbon composite material for pantograph slide plate

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CN104691338A (en) * 2014-12-20 2015-06-10 中南大学 Producing method of copper wire mesh modified carbon/carbon composite material for pantograph slide plate

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