GB674324A - Improvements in or relating to graphite articles - Google Patents
Improvements in or relating to graphite articlesInfo
- Publication number
- GB674324A GB674324A GB31922/48A GB3192248A GB674324A GB 674324 A GB674324 A GB 674324A GB 31922/48 A GB31922/48 A GB 31922/48A GB 3192248 A GB3192248 A GB 3192248A GB 674324 A GB674324 A GB 674324A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- toluene
- silicon
- solution
- graphite
- 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.)
- Expired
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract 10
- 229910002804 graphite Inorganic materials 0.000 title abstract 9
- 239000010439 graphite Substances 0.000 title abstract 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 39
- 239000000203 mixture Substances 0.000 abstract 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract 6
- 239000011347 resin Substances 0.000 abstract 6
- 229920005989 resin Polymers 0.000 abstract 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 abstract 4
- 238000005470 impregnation Methods 0.000 abstract 4
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 abstract 4
- 229920001296 polysiloxane Polymers 0.000 abstract 4
- 229910052710 silicon Inorganic materials 0.000 abstract 4
- ORVMIVQULIKXCP-UHFFFAOYSA-N trichloro(phenyl)silane Chemical compound Cl[Si](Cl)(Cl)C1=CC=CC=C1 ORVMIVQULIKXCP-UHFFFAOYSA-N 0.000 abstract 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract 3
- 239000002904 solvent Substances 0.000 abstract 3
- 125000004432 carbon atom Chemical group C* 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 238000009833 condensation Methods 0.000 abstract 2
- 230000005494 condensation Effects 0.000 abstract 2
- GNEPOXWQWFSSOU-UHFFFAOYSA-N dichloro-methyl-phenylsilane Chemical compound C[Si](Cl)(Cl)C1=CC=CC=C1 GNEPOXWQWFSSOU-UHFFFAOYSA-N 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 2
- 238000005868 electrolysis reaction Methods 0.000 abstract 2
- RSIHJDGMBDPTIM-UHFFFAOYSA-N ethoxy(trimethyl)silane Chemical compound CCO[Si](C)(C)C RSIHJDGMBDPTIM-UHFFFAOYSA-N 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000007654 immersion Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 235000006408 oxalic acid Nutrition 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 150000003254 radicals Chemical class 0.000 abstract 2
- 239000010703 silicon Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 125000003545 alkoxy group Chemical group 0.000 abstract 1
- -1 alkyl radical Chemical group 0.000 abstract 1
- 150000005840 aryl radicals Chemical class 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 235000010290 biphenyl Nutrition 0.000 abstract 1
- 239000004305 biphenyl Substances 0.000 abstract 1
- 125000006267 biphenyl group Chemical group 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 125000005843 halogen group Chemical group 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 239000002006 petroleum coke Substances 0.000 abstract 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 125000003944 tolyl group Chemical group 0.000 abstract 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 abstract 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/495—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as oligomers or polymers
- C04B41/4961—Polyorganosiloxanes, i.e. polymers with a Si-O-Si-O-chain; "silicones"
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/82—Coating or impregnation with organic materials
- C04B41/84—Compounds having one or more carbon-to-metal of carbon-to-silicon linkages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
An impregnating material for graphite articles such as tubes, electrolysis, electrodes and moulds for glass articles, comprises a partially condensed organopolysiloxane having between 1 and 1.9 organic radicals (attached through carbon to silicon) per silicon atom, or a dispersion or solution of such an organopolysiloxane, e.g. in toluene. The resin is subsequently hardened by baking to render the graphite water and oxidation resistant. The partially condensed organopolysiloxane is obtained by hydrolysis and condensation of one or more compounds having the formula RxSiQ4-x where each R is an alkyl radical having, e.g. from 1 to 12 carbon atoms, or an aryl radical, e.g. phenyl, tolyl, diphenyl, and Q is halogen or alkoxy. The degree of condensation may be controlled by the time and temperature of heating. The compounds may be hydrolysed in the presence of a solvent for the condensatiin product. In examples: (1) a mixture of methylphenylsilicon dichloride and phenyl silicon trichloride was added dropwise at 25 DEG C. to a mixture of water and toluene. The resulting toluene solution was washed and the toluene distilled off under vacuum to give a liquid siloxane which was then bodied by heating to 150-170 DEG C. until a 50 per cent solution in toluene had a viscosity of 50-100 c.s.; (2) similar to (1) using in addition methyl silicon trichloride; (3) a mixture of methyl triethoxy silane and trimethylethoxysilane was added to a mixture of toluene and a 0.67 normal solution of oxalic acid at 25 DEG C. The mixture was then heated to 70 DEG C. for five hours, toluene added and the mixture washed with water until acid-free. The mixture was then distilled to remove sufficient toluene to give a 60 per cent solution of the resin; (4) similar to (3) using hydrochloric instead of oxalic acid; (5) a mixture of trimethyl ethoxysilane, phenyl silicon trichloride and methyl silicon trichloride was added to a mixture of water, toluene and isopropyl alcohol at below 25 DEG C. The mixture was refluxed for 2 hours, washed and distilled to give a 60 per cent resin solution in toluene; (6) a mixture of methyl phenyl silicon dichloride, phenyl silicon trichloride and methyl silicon trichloride was added to a mixture of water and toluene at below 30 DEG C. During the addition the water was replaced five times to remove acid, the final hydrolyzate being washed and distilled to 85-90 per cent solids. The concentrate was bodied till a 50 per cent solution had a viscosity of 120 c.p.; (7) a mixture of dimethyl silicon dichloride, phenyl silicon trichloride and methyl silicon trichloride was hydrolysed, washed and bodied as in (2) and the bodied resin diluted with toluene to give a 50 per cent solution having a viscosity of 200 c.p. Examples are given of the impregnation of graphite articles with resins described in the other examples, with subsequent drying to remove solvent and baking to cure the resin. The impregnation and baking steps may be repeated. Specification 646,023 and 646,024, [Group III], are referred to.ALSO:Graphite articles, e.g. tubes, moulds for moulding glass, and electrolysis electrodes, are impregnated with material comprising a partially condensed organopolysiloxane having from 1 to 1.9 organic radicals (attached to silicon through carbon atoms) per silicon atom, (see Group IV (a)), the siloxane finally being hardened by baking. The impregnant may be the siloxane itself, or a dispersion or solution of the siloxane in, e.g. toluene, the impregnated graphite being dried if necessary, to remove solvent, before baking. The impregnation treatment may be repeated if complete pore blocking is required. Impregnation may be assisted by evacuation before immersion in the liquid, and application of air pressure after immersion. The treated graphite is oxidation and water resistant. The graphite articles may be made by moulding a mixture of petroleum coke and a tar or pitch binder and graphitizing at above 2000 DEG C. This produces a porous graphite. Specification 646,023 and 646,024 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US975772XA | 1947-12-26 | 1947-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB674324A true GB674324A (en) | 1952-06-25 |
Family
ID=22264118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31922/48A Expired GB674324A (en) | 1947-12-26 | 1948-12-09 | Improvements in or relating to graphite articles |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE855818C (en) |
FR (1) | FR975772A (en) |
GB (1) | GB674324A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102745990A (en) * | 2012-07-26 | 2012-10-24 | 武汉科技大学 | Graphite powder for high-temperature material and preparation method of graphite powder |
CN113880605A (en) * | 2021-11-16 | 2022-01-04 | 贵州兰鑫石墨机电设备制造有限公司 | Method for modifying polytetrafluoroethylene impregnated graphite by dynamic isostatic pressing method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5024877A (en) * | 1989-04-14 | 1991-06-18 | The Dow Chemical Company | Fire resistant materials |
CN115073214A (en) * | 2022-07-21 | 2022-09-20 | 哈尔滨工业大学 | Method for preparing graphite piece oxidation-resistant coating based on silicon resin dip coating liquid precursor conversion method |
-
1948
- 1948-12-02 FR FR975772D patent/FR975772A/en not_active Expired
- 1948-12-09 GB GB31922/48A patent/GB674324A/en not_active Expired
-
1950
- 1950-09-27 DE DED6160A patent/DE855818C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102745990A (en) * | 2012-07-26 | 2012-10-24 | 武汉科技大学 | Graphite powder for high-temperature material and preparation method of graphite powder |
CN113880605A (en) * | 2021-11-16 | 2022-01-04 | 贵州兰鑫石墨机电设备制造有限公司 | Method for modifying polytetrafluoroethylene impregnated graphite by dynamic isostatic pressing method |
Also Published As
Publication number | Publication date |
---|---|
DE855818C (en) | 1952-12-22 |
FR975772A (en) | 1951-03-09 |
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