CN117263706B - 一种耐磨低电阻碳材料及其制备方法 - Google Patents
一种耐磨低电阻碳材料及其制备方法 Download PDFInfo
- Publication number
- CN117263706B CN117263706B CN202311285483.XA CN202311285483A CN117263706B CN 117263706 B CN117263706 B CN 117263706B CN 202311285483 A CN202311285483 A CN 202311285483A CN 117263706 B CN117263706 B CN 117263706B
- Authority
- CN
- China
- Prior art keywords
- stirring
- sol
- preparation
- flake graphite
- hours
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003575 carbonaceous material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 78
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 66
- 239000010439 graphite Substances 0.000 claims abstract description 66
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 59
- 239000004917 carbon fiber Substances 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 53
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 239000010426 asphalt Substances 0.000 claims abstract description 18
- 239000000571 coke Substances 0.000 claims abstract description 16
- 239000002006 petroleum coke Substances 0.000 claims abstract description 15
- 239000006229 carbon black Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 150000001721 carbon Chemical class 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 239000012298 atmosphere Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 59
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 36
- 238000001035 drying Methods 0.000 claims description 35
- 238000005406 washing Methods 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 28
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 28
- 239000008367 deionised water Substances 0.000 claims description 27
- 229910021641 deionized water Inorganic materials 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 18
- 229910052681 coesite Inorganic materials 0.000 claims description 18
- 229910052906 cristobalite Inorganic materials 0.000 claims description 18
- 239000006185 dispersion Substances 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 18
- 229910052682 stishovite Inorganic materials 0.000 claims description 18
- 229910052905 tridymite Inorganic materials 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000004898 kneading Methods 0.000 claims description 11
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 11
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 10
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 9
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 239000011259 mixed solution Substances 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 8
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 7
- 238000000967 suction filtration Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 10
- 229910021382 natural graphite Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000007770 graphite material Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 239000002008 calcined petroleum coke Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
-
- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/522—Graphite
-
- 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
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/424—Carbon black
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/427—Diamond
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/524—Non-oxidic, e.g. borides, carbides, silicides or nitrides
- C04B2235/5248—Carbon, e.g. graphite
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
本发明公开了一种耐磨低电阻碳材料及其制备方法,制备方法包括如下步骤:将石油焦、沥青焦、炭黑、改性鳞片石墨加入到混捏机中,得到混料;将混料、改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到辊轧料;将辊轧料加入到压制机中压制成型,得到生坯;将生坯加入到烧结炉中,在N2气氛下焙烧,冷却至室温;制备得到的耐磨低电阻碳材料具有优良的电性能、热性能以及力学性能。
Description
技术领域
本发明涉及碳材料领域,具体涉及一种耐磨低电阻碳材料及其制备方法。
背景技术
石墨具有通过层叠基于碳原子的SP2杂化轨道的碳六边形环生长而成的碳六边形网面来形成的晶体结构,根据其层叠形态分类成六方晶体、菱形晶体,但碳六边形网面内的自由电子、空穴等载流子浓度、迁移率均高,所以显示电、热的良传导性。另一方面,由于碳六边形网面间通过范德华力弱键合,所以层间比较容易滑动变形,因此石墨的强度、硬度与金属材料相比,较柔软,另外具有自润滑性。由于天然出产的天然石墨为多晶体,所以晶体粒子界面受到破坏,产生薄层状,无法得到具有充分的硬度、强度的块状。因此天然石墨根据其粒子尺寸来分级,通常作为填料使用。另一方面,为了利用石墨的优异的特性在各种用途中使用,而需要制造具有可实用的强度、硬度的结构体,天然石墨单体难以得到结构体,所以各种各样的人造石墨材料被逐渐开发、实用化。
目前的高强度、高导热石墨材料普遍采用石油焦或沥青焦与粘接剂和增强剂混合、成型、高温石墨化后制备。天然石墨与其它石油焦、沥青焦相比,具有较高热稳定性、挥发份和热膨胀系数。然而以天然石墨为原料制备的材料强度较低,抗折和抗冲击力学性能很低,在苛刻条件下使用常出现裂纹、开裂、断裂、掉块、剥落和掉渣掉粒等现象。
中国专利文献CN201510099268.X公开了一种炭石墨复合材料的制备方法,原料采用如下粒度和重量百分比配料:炭黑1.5~2.5%,≤1mm石墨5~8%,≤0.075mm煅烧石油焦粉25~30%,1~4mm煅烧石油焦15~20%,4~l0mm电煅无烟煤10~15%,10~16mm电煅无烟煤5~10%,10~16mm煅烧沥青焦5~15%,煤沥青18~20%;短切碳纤维为以上原料总量的1~3%。
中国专利文献CN200710072621.0公开了一种石墨基复合材料的制备方法,将膨胀石墨粉与焦粉混合并压缩形成基体以石墨为主的石墨板,压制压力为5~50MPa;用有机溶剂将沥青溶解,加入增强填料和催化石墨化填料,混合均匀,除去溶剂得到粘结剂混合物;将粘接剂混合物在110~140℃熔融,放入石墨板,施加的气体压力为1~50MPa,浸渍10~120分钟;取出浸渍的石墨板,冷却至室温,进行切割或破碎成小颗粒;将破碎后的混合物放入模具中压制成型。
为了满足电碳行业中的电刷、耐磨材料、石墨坩埚等的需求,现有的人造石墨碳材料在抗折强度、韧性以及耐磨性上仍需提升。
发明内容
为了解决现有技术存在的不足,本发明的目的在于提供一种耐磨低电阻碳材料及其制备方法,具有优良的电性能、热性能、抗折强度、耐磨性以及韧性。
为了实现上述目的,本发明采用如下技术方案:
本发明要求保护一种耐磨低电阻碳材料的制备方法,包括如下步骤:
(1)将石油焦、沥青焦、炭黑、改性鳞片石墨加入到混捏机中,得到混料;
(2)将混料、改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到辊轧料;
(3)将辊轧料加入到压制机中压制成型,得到生坯;
(4)将生坯加入到烧结炉中,在N2气氛下焙烧,冷却至室温,得到耐磨低电阻碳材料。
优选的,步骤(1)中,石油焦、沥青焦、炭黑、改性鳞片石墨的重量比为30~50:5~15:20~35:15~25;混捏温度为200~300℃,混捏机转速为1000~2000r/min,混捏时间为1~3h;步骤(2)中,混料与改性碳纤维的重量比为100:8~15,所得辊轧料的粒径为100~200μm;步骤(3)中,压制条件为15~20MPa、150~180℃下压制30~60min;步骤(4)中,焙烧条件为:以30℃/h升温至180~200℃,再以20℃/h升温至400~420℃,然后以40℃/h升温至770~800℃,最后以60℃/h升温至1100℃并保温6~8天。
优选的,步骤(1)中,改性鳞片石墨的制备方法包括如下步骤:
a、将鳞片石墨分散至KMnO4/H2SO4混合液中,搅拌然后静置,将产物过滤、洗涤、干燥,然后将其加入到乙醇水溶液中,搅拌并超声分散,得到鳞片石墨分散液;
b、将去离子水与无水乙醇混合,加入36wt%浓盐酸调节pH至2~3,然后加入钛酸四丁酯,搅拌1~2h,得到TiO2溶胶;
c、将去离子水与无水乙醇混合,加入36wt%浓盐酸调节pH至2~3,然后加入正硅酸乙酯,搅拌1~2h,得到SiO2溶胶;将TiO2溶胶与SiO2溶胶混合,50~60℃下搅拌6~8h,得到TiO2/SiO2溶胶;
d、将TiO2/SiO2溶胶滴加入鳞片石墨分散液中,密封搅拌反应,将产物抽滤、洗涤、干燥,得到改性鳞片石墨。
优选的,步骤(2)中,改性碳纤维的制备方法包括如下步骤:
S1、将碳纤维浸渍入丙酮中,反应结束后,将产物洗涤、干燥,然后将碳纤维浸入KH550水溶液中,恒温浸泡,将产物洗涤、干燥,得到预处理碳纤维;
S2、将预处理碳纤维、FeCl3·6H2O分散于去离子水中,边搅拌边加入水合肼,超声分散,然后密封搅拌反应,将产物过滤、洗涤、干燥,得到改性碳纤维。
优选的,步骤a中,KMnO4/H2SO4混合液中KMnO4的浓度为0.1~0.5mol/L,H2SO4的浓度为0.1~0.5mol/L;搅拌10~20min,然后静置30~60min;乙醇水溶液的浓度为20~40wt%,搅拌超声时间0.5~1h。
优选的,步骤b中,去离子水、无水乙醇、钛酸四丁酯的重量比为10:6~12:8~15;步骤c中,去离子水、无水乙醇、正硅酸乙酯的重量比为10:8~10:6~12,TiO2溶胶与SiO2溶胶的体积比为1~2:1。
优选的,步骤d中,TiO2/SiO2溶胶与鳞片石墨分散液的体积比为1~2:3,鳞片石墨分散液中鳞片石墨质量分数为20~30wt%;TiO2/SiO2溶胶2~4h滴完,搅拌反应条件为120~140℃下水热反应12~18h。
优选的,步骤S1中,反应条件为70~80℃下反应30~60min;KH550水溶液的浓度为5~10wt%,碳纤维与KH550水溶液的重量比为1:4~6;恒温浸泡条件为60~80℃下浸泡2~3h。
优选的,步骤S2中,预处理碳纤维、FeCl3·6H2O、去离子水、水合肼的重量比为10:2~4:30~50:1~3;超声分散时间4~6h,搅拌反应条件为140~160℃下反应6~8h。
本发明还要求保护一种所述制备方法制备得到的耐磨低电阻碳材料。
与现有技术相比,本发明具有如下有益效果:
1)本发明提供了一种耐磨低电阻碳材料,主要原料是石油焦、沥青焦、炭黑、改性鳞片石墨、改性碳纤维,通过混捏、辊轧、压制、焙烧等工艺,制备得到的碳材料轻量化、一体化程度高,电阻率低,抗折和抗冲击力学性能高,表现出良好的减磨自润滑性能以及耐热耐电弧性能。
2)本发明提供了一种改性鳞片石墨,首先利用KMnO4/H2SO4混合液改善鳞片石墨的界面性能、增加表面官能团数目,为后续纳米TiO2及纳米SiO2的原位生成做准备;纳米材料比表面积大且表面能极高,因此有很强的团聚性,本发明首先制备得到TiO2溶胶和纳米SiO2溶胶,通过原位生成使其均匀分布在鳞片石墨表面,后续又以鳞片石墨为碳源,以气氛中的N2为氮源,高温条件下在界面处原位反应生成TiN、TiNC、SiC、Si3N4等纳米晶须或颗粒,Ti基和Si基纳米陶瓷材料协同提高了碳材料的致密度,同时起到了增强、增韧、提高耐磨性的作用。
3)本发明提供了一种改性碳纤维,首先利用丙酮除去碳纤维表面的疏水涂层,使其具有亲水性,然后利用KH550对碳纤维进行改性,一方面使其表面活化,增加碳纤维表面的反应位点,有利于后续纳米Fe3O4的包覆,另一方面,通过KH550将-NH2和有机长链接枝到碳纤维表面,能够改善碳纤维与油性碳基体之间的相容性,增强碳纤维与基体界面处的电导性能;后续又利用水合肼做还原剂将纳米Fe3O4负载在碳纤维表面,能够削弱碳纤维的团聚,使碳纤维均匀分布在碳基体中,与改性鳞片石墨协同形成导电通路,从而降低复合材料的电阻率;碳纤维具有高的比强度和比模量,改性后的碳纤维能够充分发挥其补强效果,有效提高碳材料的抗折抗压强度和韧性。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚,以下结合实施例,对本发明作进一步的详细说明。当然,此处所描述的具体实施例仅仅用于解释本发明,并不用于限定本发明。
如无特殊说明外,本发明中的化学试剂和材料均通过市场途径购买或通过市场途径购买的原料合成。
石油焦:粒度为-325目,水分≤1%,灰分≤1%,采用低硫熟焦块状;
沥青焦:真密度≥2.10g/cm3,灰分≤0.5%,挥发分<0.8%;
炭黑:电阻率为0.6~1.0μΩ·m,粒径为45~60μm;
鳞片石墨:200~300目;
碳纤维为短切碳纤维,长度为1~5mm,优选为2~3mm。
下面通过具体实施例,来对本发明作进一步的说明。
实施例1
一种耐磨低电阻碳材料的制备方法,包括如下步骤:
(1)将鳞片石墨分散至KMnO4/H2SO4混合液(KMnO4的浓度为0.3mol/L,H2SO4的浓度为0.3mol/L)中,搅拌20min然后静置60min,将产物过滤、洗涤、干燥,然后将其加入到40wt%乙醇水溶液中,搅拌并超声分散1h,得到鳞片石墨分散液;
(2)将10kg去离子水与12kg无水乙醇混合,加入36wt%浓盐酸调节pH至3,然后加入15kg钛酸四丁酯,搅拌2h,得到TiO2溶胶;
(3)将10kg去离子水与10kg无水乙醇混合,加入36wt%浓盐酸调节pH至3,然后加入12kg正硅酸乙酯,搅拌2h,得到SiO2溶胶;将20L TiO2溶胶与10L SiO2溶胶混合,60℃下搅拌8h,得到TiO2/SiO2溶胶;
(4)将20LTiO2/SiO2溶胶滴加入30L 20wt%鳞片石墨分散液中,4h滴完,密封、140℃下水热反应18h,将产物抽滤、洗涤、干燥,得到改性鳞片石墨;
(5)将碳纤维浸渍入丙酮中,80℃下反应60min,将产物洗涤、干燥,然后将1kg碳纤维浸入6kg 10wt%KH550水溶液中,80℃下恒温浸泡3h,将产物洗涤、干燥,得到预处理碳纤维;
(6)将10kg预处理碳纤维、4kg FeCl3·6H2O分散于50kg去离子水中,边搅拌边加入3kg水合肼,超声分散6h,然后密封、160℃下搅拌反应8h,将产物过滤、洗涤、干燥,得到改性碳纤维;
(7)将40kg石油焦、12g沥青焦、28kg炭黑、18kg改性鳞片石墨加入到转速为1500r/min的混捏机中,在250℃下混捏2h,得到混料;
(8)将100kg混料、14kg改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到100~200μm辊轧料;
(9)将辊轧料加入到压制机中,在20MPa、180℃下压制60min成型,得到生坯;
(10)将生坯加入到烧结炉中,在N2气氛下,以30℃/h升温至180℃,再以20℃/h升温至400℃,然后以40℃/h升温至800℃,最后以60℃/h升温至1100℃并保温8天,冷却至室温,得到耐磨低电阻碳材料。
实施例2
一种耐磨低电阻碳材料的制备方法,包括如下步骤:
(1)将鳞片石墨分散至KMnO4/H2SO4混合液(KMnO4的浓度为0.3mol/L,H2SO4的浓度为0.3mol/L)中,搅拌10min然后静置30min,将产物过滤、洗涤、干燥,然后将其加入到20wt%乙醇水溶液中,搅拌并超声分散0.5h,得到鳞片石墨分散液;
(2)将10kg去离子水与6kg无水乙醇混合,加入36wt%浓盐酸调节pH至2,然后加入8kg钛酸四丁酯,搅拌1h,得到TiO2溶胶;
(3)将10kg去离子水与8kg无水乙醇混合,加入36wt%浓盐酸调节pH至2,然后加入6kg正硅酸乙酯,搅拌1h,得到SiO2溶胶;将10LTiO2溶胶与10L SiO2溶胶混合,50℃下搅拌6h,得到TiO2/SiO2溶胶;
(4)将10LTiO2/SiO2溶胶滴加入30L 20wt%鳞片石墨分散液中,2h滴完,密封、120℃下水热反应12h,将产物抽滤、洗涤、干燥,得到改性鳞片石墨;
(5)将碳纤维浸渍入丙酮中,70℃下反应30min,将产物洗涤、干燥,然后将1kg碳纤维浸入4kg 5wt%KH550水溶液中,60℃下恒温浸泡2h,将产物洗涤、干燥,得到预处理碳纤维;
(6)将10kg预处理碳纤维、2kg FeCl3·6H2O分散于30kg去离子水中,边搅拌边加入1kg水合肼,超声分散4h,然后密封、140℃下搅拌反应6h,将产物过滤、洗涤、干燥,得到改性碳纤维;
(7)将40kg石油焦、12g沥青焦、28kg炭黑、18kg改性鳞片石墨加入到转速为1500r/min的混捏机中,在250℃下混捏2h,得到混料;
(8)将100kg混料、14kg改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到100~200μm辊轧料;
(9)将辊轧料加入到压制机中,在20MPa、180℃下压制60min成型,得到生坯;
(10)将生坯加入到烧结炉中,在N2气氛下,以30℃/h升温至180℃,再以20℃/h升温至400℃,然后以40℃/h升温至800℃,最后以60℃/h升温至1100℃并保温8天,冷却至室温,得到耐磨低电阻碳材料。
实施例3
一种耐磨低电阻碳材料的制备方法,包括如下步骤:
(1)将鳞片石墨分散至KMnO4/H2SO4混合液(KMnO4的浓度为0.3mol/L,H2SO4的浓度为0.3mol/L)中,搅拌15min然后静置45min,将产物过滤、洗涤、干燥,然后将其加入到30wt%乙醇水溶液中,搅拌并超声分散1h,得到鳞片石墨分散液;
(2)将10kg去离子水与10kg无水乙醇混合,加入36wt%浓盐酸调节pH至2.5,然后加入12kg钛酸四丁酯,搅拌1.5h,得到TiO2溶胶;
(3)将10kg去离子水与9kg无水乙醇混合,加入36wt%浓盐酸调节pH至2.5,然后加入10kg正硅酸乙酯,搅拌1.5h,得到SiO2溶胶;将15LTiO2溶胶与10L SiO2溶胶混合,55℃下搅拌7h,得到TiO2/SiO2溶胶;
(4)将15LTiO2/SiO2溶胶滴加入30L 20wt%鳞片石墨分散液中,3h滴完,密封、130℃下水热反应15h,将产物抽滤、洗涤、干燥,得到改性鳞片石墨;
(5)将碳纤维浸渍入丙酮中,75℃下反应45min,将产物洗涤、干燥,然后将1kg碳纤维浸入5kg 8wt%KH550水溶液中,70℃下恒温浸泡2.5h,将产物洗涤、干燥,得到预处理碳纤维;
(6)将10kg预处理碳纤维、3kg FeCl3·6H2O分散于40kg去离子水中,边搅拌边加入2kg水合肼,超声分散5h,然后密封、150℃下搅拌反应7h,将产物过滤、洗涤、干燥,得到改性碳纤维;
(7)将40kg石油焦、12g沥青焦、28kg炭黑、18kg改性鳞片石墨加入到转速为1500r/min的混捏机中,在250℃下混捏2h,得到混料;
(8)将100kg混料、14kg改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到100~200μm辊轧料;
(9)将辊轧料加入到压制机中,在20MPa、180℃下压制60min成型,得到生坯;
(10)将生坯加入到烧结炉中,在N2气氛下,以30℃/h升温至180℃,再以20℃/h升温至400℃,然后以40℃/h升温至800℃,最后以60℃/h升温至1100℃并保温8天,冷却至室温,得到耐磨低电阻碳材料。
实施例4
一种耐磨低电阻碳材料的制备方法,包括如下步骤:
(1)将鳞片石墨分散至KMnO4/H2SO4混合液(KMnO4的浓度为0.3mol/L,H2SO4的浓度为0.3mol/L)中,搅拌15min然后静置50min,将产物过滤、洗涤、干燥,然后将其加入到35wt%乙醇水溶液中,搅拌并超声分散1h,得到鳞片石墨分散液;
(2)将10kg去离子水与11kg无水乙醇混合,加入36wt%浓盐酸调节pH至3,然后加入14kg钛酸四丁酯,搅拌1.5h,得到TiO2溶胶;
(3)将10kg去离子水与9kg无水乙醇混合,加入36wt%浓盐酸调节pH至3,然后加入11kg正硅酸乙酯,搅拌1.5h,得到SiO2溶胶;将18L TiO2溶胶与10L SiO2溶胶混合,60℃下搅拌7h,得到TiO2/SiO2溶胶;
(4)将18LTiO2/SiO2溶胶滴加入30L 20wt%鳞片石墨分散液中,3h滴完,密封、130℃下水热反应15h,将产物抽滤、洗涤、干燥,得到改性鳞片石墨;
(5)将碳纤维浸渍入丙酮中,75℃下反应50min,将产物洗涤、干燥,然后将1kg碳纤维浸入5kg 10wt%KH550水溶液中,75℃下恒温浸泡3h,将产物洗涤、干燥,得到预处理碳纤维;
(6)将10kg预处理碳纤维、3kg FeCl3·6H2O分散于45kg去离子水中,边搅拌边加入2.5kg水合肼,超声分散5h,然后密封、150℃下搅拌反应7h,将产物过滤、洗涤、干燥,得到改性碳纤维;
(7)将40kg石油焦、12g沥青焦、28kg炭黑、18kg改性鳞片石墨加入到转速为1500r/min的混捏机中,在250℃下混捏2h,得到混料;
(8)将100kg混料、14kg改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到100~200μm辊轧料;
(9)将辊轧料加入到压制机中,在20MPa、180℃下压制60min成型,得到生坯;
(10)将生坯加入到烧结炉中,在N2气氛下,以30℃/h升温至180℃,再以20℃/h升温至400℃,然后以40℃/h升温至800℃,最后以60℃/h升温至1100℃并保温8天,冷却至室温,得到耐磨低电阻碳材料。
对比例1
一种碳材料的制备方法,包括如下步骤:
(1)将碳纤维浸渍入丙酮中,80℃下反应60min,将产物洗涤、干燥,然后将1kg碳纤维浸入6kg 10wt%KH550水溶液中,80℃下恒温浸泡3h,将产物洗涤、干燥,得到预处理碳纤维;
(2)将10kg预处理碳纤维、4kg FeCl3·6H2O分散于50kg去离子水中,边搅拌边加入3kg水合肼,超声分散6h,然后密封、160℃下搅拌反应8h,将产物过滤、洗涤、干燥,得到改性碳纤维;
(3)将40kg石油焦、12g沥青焦、28kg炭黑、18kg鳞片石墨加入到转速为1500r/min的混捏机中,在250℃下混捏2h,得到混料;
(4)将100kg混料、14kg改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到100~200μm辊轧料;
(5)将辊轧料加入到压制机中,在20MPa、180℃下压制60min成型,得到生坯;
(6)将生坯加入到烧结炉中,在N2气氛下,以30℃/h升温至180℃,再以20℃/h升温至400℃,然后以40℃/h升温至800℃,最后以60℃/h升温至1100℃并保温8天,冷却至室温,得到所述碳材料。
对比例2
一种耐磨低电阻碳材料的制备方法,包括如下步骤:
(1)将鳞片石墨分散至KMnO4/H2SO4混合液(KMnO4的浓度为0.3mol/L,H2SO4的浓度为0.3mol/L)中,搅拌20min然后静置60min,将产物过滤、洗涤、干燥,然后将其加入到40wt%乙醇水溶液中,搅拌并超声分散1h,得到鳞片石墨分散液;
(2)将10kg去离子水与12kg无水乙醇混合,加入36wt%浓盐酸调节pH至3,然后加入15kg钛酸四丁酯,搅拌2h,得到TiO2溶胶;
(3)将10kg去离子水与10kg无水乙醇混合,加入36wt%浓盐酸调节pH至3,然后加入12kg正硅酸乙酯,搅拌2h,得到SiO2溶胶;将20L TiO2溶胶与10L SiO2溶胶混合,60℃下搅拌8h,得到TiO2/SiO2溶胶;
(4)将20LTiO2/SiO2溶胶滴加入30L 20wt%鳞片石墨分散液中,4h滴完,密封、140℃下水热反应18h,将产物抽滤、洗涤、干燥,得到改性鳞片石墨;
(5)将40kg石油焦、12g沥青焦、28kg炭黑、18kg改性鳞片石墨加入到转速为1500r/min的混捏机中,在250℃下混捏2h,得到混料;
(6)将100kg混料、14kg碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到100~200μm辊轧料;
(7)将辊轧料加入到压制机中,在20MPa、180℃下压制60min成型,得到生坯;
(8)将生坯加入到烧结炉中,在N2气氛下,以30℃/h升温至180℃,再以20℃/h升温至400℃,然后以40℃/h升温至800℃,最后以60℃/h升温至1100℃并保温8天,冷却至室温,得到所述碳材料。
将实施例1~4、对比例1~2制备所得受电弓滑板进行物理性能测试,采用四探针法在高精度电阻率测试仪中测量材料的电阻率(试样尺寸3mm×4mm×36mm,测试方向平行于长轴向),抗折强度参考JB/T8133.7-2013《电炭制品物理化学性能试验方法第7部分:抗折强度》,抗压强度参考JB/T 8133.8-2013《电炭制品物理化学性能试验方法第8部分:抗压强度》,冲击韧性测试在电子万能试验机上进行(试样尺寸为5×5×55mm),加载方向垂直于长轴向;载流磨损率在HUNC-1电动工具测功机上测试,具体数据见表1。
表1碳材料物理性能数据
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (8)
1.一种耐磨低电阻碳材料的制备方法,其特征在于,包括如下步骤:
(1)将石油焦、沥青焦、炭黑、改性鳞片石墨加入到混捏机中,得到混料;
(2)将混料、改性碳纤维加入到辊轧机中压实成片状物,再将片状物粉碎,循环此过程3次,得到辊轧料;
(3)将辊轧料加入到压制机中压制成型,得到生坯;
(4)将生坯加入到烧结炉中,在N2气氛下焙烧,冷却至室温,得到耐磨低电阻碳材料;
步骤(1)中,改性鳞片石墨的制备方法包括如下步骤:
a、将鳞片石墨分散至KMnO4/H2SO4混合液中,搅拌然后静置,将产物过滤、洗涤、干燥,然后将其加入到乙醇水溶液中,搅拌并超声分散,得到鳞片石墨分散液;
b、将去离子水与无水乙醇混合,加入36wt%浓盐酸调节pH至2~3,然后加入钛酸四丁酯,搅拌1~2h,得到TiO2溶胶;
c、将去离子水与无水乙醇混合,加入36wt%浓盐酸调节pH至2~3,然后加入正硅酸乙酯,搅拌1~2h,得到SiO2溶胶;将TiO2溶胶与SiO2溶胶混合,50~60℃下搅拌6~8h,得到TiO2/SiO2溶胶;
d、将TiO2/SiO2溶胶滴加入鳞片石墨分散液中,密封搅拌反应,将产物抽滤、洗涤、干燥,得到改性鳞片石墨;
步骤(2)中,改性碳纤维的制备方法包括如下步骤:
S1、将碳纤维浸渍入丙酮中,反应结束后,将产物洗涤、干燥,然后将碳纤维浸入KH550水溶液中,恒温浸泡,将产物洗涤、干燥,得到预处理碳纤维;
S2、将预处理碳纤维、FeCl3·6H2O分散于去离子水中,边搅拌边加入水合肼,超声分散,然后密封搅拌反应,将产物过滤、洗涤、干燥,得到改性碳纤维。
2.根据权利要求1所述的制备方法,其特征在于,步骤(1)中,石油焦、沥青焦、炭黑、改性鳞片石墨的重量比为30~50:5~15:20~35:15~25;混捏温度为200~300℃,混捏机转速为1000~2000r/min,混捏时间为1~3h;步骤(2)中,混料与改性碳纤维的重量比为100:8~15,所得辊轧料的粒径为100~200μm;步骤(3)中,压制条件为15~20MPa、150~180℃下压制30~60min;步骤(4)中,焙烧条件为:以30℃/h升温至180~200℃,再以20℃/h升温至400~420℃,然后以40℃/h升温至770~800℃,最后以60℃/h升温至1100℃并保温6~8天。
3.根据权利要求1所述的制备方法,其特征在于,步骤a中,KMnO4/H2SO4混合液中KMnO4的浓度为0.1~0.5mol/L,H2SO4的浓度为0.1~0.5mol/L;搅拌10~20min,然后静置30~60min;乙醇水溶液的浓度为20~40wt%,搅拌超声时间0.5~1h。
4.根据权利要求1所述的制备方法,其特征在于,步骤b中,去离子水、无水乙醇、钛酸四丁酯的重量比为10:6~12:8~15;步骤c中,去离子水、无水乙醇、正硅酸乙酯的重量比为10:8~10:6~12,TiO2溶胶与SiO2溶胶的体积比为1~2:1。
5.根据权利要求1所述的制备方法,其特征在于,步骤d中,TiO2/SiO2溶胶与鳞片石墨分散液的体积比为1~2:3,鳞片石墨分散液中鳞片石墨质量分数为20~30wt%;TiO2/SiO2溶胶2~4h滴完,搅拌反应条件为120~140℃下水热反应12~18h。
6.根据权利要求1所述的制备方法,其特征在于,步骤S1中,反应条件为70~80℃下反应30~60min;KH550水溶液的浓度为5~10wt%,碳纤维与KH550水溶液的重量比为1:4~6;恒温浸泡条件为60~80℃下浸泡2~3h。
7.根据权利要求1所述的制备方法,其特征在于,步骤S2中,预处理碳纤维、FeCl3·6H2O、去离子水、水合肼的重量比为10:2~4:30~50:1~3;超声分散时间4~6h,搅拌反应条件为140~160℃下反应6~8h。
8.一种如权利要求1~7任一项所述制备方法制备得到的耐磨低电阻碳材料。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311285483.XA CN117263706B (zh) | 2023-10-07 | 2023-10-07 | 一种耐磨低电阻碳材料及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311285483.XA CN117263706B (zh) | 2023-10-07 | 2023-10-07 | 一种耐磨低电阻碳材料及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN117263706A CN117263706A (zh) | 2023-12-22 |
CN117263706B true CN117263706B (zh) | 2024-05-14 |
Family
ID=89210190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202311285483.XA Active CN117263706B (zh) | 2023-10-07 | 2023-10-07 | 一种耐磨低电阻碳材料及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN117263706B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117486612B (zh) * | 2024-01-02 | 2024-03-26 | 唐山金湾特碳石墨有限公司 | 一种纯化碳棒的制备方法及其制成的纯化碳棒 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104649263A (zh) * | 2015-03-06 | 2015-05-27 | 山西亮宇炭素有限公司 | 炭石墨复合材料的制备方法 |
WO2016202164A1 (zh) * | 2015-06-17 | 2016-12-22 | 田东 | 一种炭/石墨/锡复合负极材料的制备方法 |
CN110436950A (zh) * | 2019-08-15 | 2019-11-12 | 合肥工业大学 | 一种高组分碳纤维的碳/碳复合受电弓滑板材料的制备方法 |
CN112174670A (zh) * | 2020-09-30 | 2021-01-05 | 中国科学院上海应用物理研究所 | 一种石墨材料致密化改性的制备方法、由此得到的致密化石墨材料及其应用 |
CN114685186A (zh) * | 2022-03-25 | 2022-07-01 | 长沙诚智新材料科技有限公司 | 一种改性碳纤维、改性碳石墨材料及其制备方法 |
CN116283333A (zh) * | 2023-05-18 | 2023-06-23 | 西南交通大学 | 一种磺化石墨烯增强碳基复合材料及其制备方法和应用 |
CN116462509A (zh) * | 2023-05-04 | 2023-07-21 | 湖北东南佳特碳新材料有限公司 | 一种光伏用等静压石墨及其制备方法和应用 |
-
2023
- 2023-10-07 CN CN202311285483.XA patent/CN117263706B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104649263A (zh) * | 2015-03-06 | 2015-05-27 | 山西亮宇炭素有限公司 | 炭石墨复合材料的制备方法 |
WO2016202164A1 (zh) * | 2015-06-17 | 2016-12-22 | 田东 | 一种炭/石墨/锡复合负极材料的制备方法 |
CN110436950A (zh) * | 2019-08-15 | 2019-11-12 | 合肥工业大学 | 一种高组分碳纤维的碳/碳复合受电弓滑板材料的制备方法 |
CN112174670A (zh) * | 2020-09-30 | 2021-01-05 | 中国科学院上海应用物理研究所 | 一种石墨材料致密化改性的制备方法、由此得到的致密化石墨材料及其应用 |
CN114685186A (zh) * | 2022-03-25 | 2022-07-01 | 长沙诚智新材料科技有限公司 | 一种改性碳纤维、改性碳石墨材料及其制备方法 |
CN116462509A (zh) * | 2023-05-04 | 2023-07-21 | 湖北东南佳特碳新材料有限公司 | 一种光伏用等静压石墨及其制备方法和应用 |
CN116283333A (zh) * | 2023-05-18 | 2023-06-23 | 西南交通大学 | 一种磺化石墨烯增强碳基复合材料及其制备方法和应用 |
Also Published As
Publication number | Publication date |
---|---|
CN117263706A (zh) | 2023-12-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107032816B (zh) | 一种碳化硅纳米线增强C/C-SiC-ZrB2陶瓷基复合材料的制备方法 | |
CN117263706B (zh) | 一种耐磨低电阻碳材料及其制备方法 | |
CN111644615B (zh) | 一种共强化法实现tc4钛合金高强韧性的制备方法 | |
CN110330350B (zh) | 一种纤维增韧氧化铝陶瓷的制备方法 | |
CN108610049B (zh) | 各向同性石墨材料,其制造方法及其应用 | |
CN108129151B (zh) | 一种石墨烯/碳化硅纳米复合结构单片陶瓷及其制备方法 | |
CN112723889B (zh) | 一种高强韧碳化硼-硼化钛-石墨烯复合陶瓷及其制备方法 | |
CN112592188A (zh) | 一种石墨烯复合碳化硅陶瓷材料的制备方法 | |
CN111056841A (zh) | 稀土增强的石墨板材制作方法 | |
CN108083806B (zh) | 一种超细结构各向同性石墨及其制备方法 | |
CN113121242A (zh) | 一种短切碳纤维增韧碳化硅复合材料及其制备方法 | |
CN115057707A (zh) | 一种高性能低游离硅含量反应烧结碳化硅陶瓷材料及其制备方法 | |
CN114685177B (zh) | 一种高强碳石墨材料及其制备方法和应用 | |
CN110304933B (zh) | 表面改性碳化硅晶须增韧反应烧结碳化硅陶瓷的制备方法 | |
WO2012161410A1 (ko) | 흑연블록의 제조방법 | |
CN113336552B (zh) | 一种铝电解用低电阻率阳极炭块及其制备方法 | |
CN107512902B (zh) | 一种多纤维强化的镁铝碳耐火材料及其制备工艺 | |
CN108164268B (zh) | 一种石墨烯复合硅碳氮前驱体陶瓷的制备方法 | |
JP4311777B2 (ja) | 黒鉛材の製造方法 | |
CN109133926B (zh) | 一种密封石墨及其制备方法 | |
CN108455993B (zh) | 建筑耐火材料及其制备方法 | |
CN107793138B (zh) | 一种氧化铝陶瓷 | |
CN113213936B (zh) | 一种陶瓷粉掺杂改性自烧结石墨复合材料的制备方法 | |
CN108002854B (zh) | 一种高导热高抗蚀电煅煤基炭砖及其制备方法 | |
CN116376127A (zh) | 一种磁性玩具防开裂耐磨材料及其制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |