GB918880A - Improvements in carbon products and in their production - Google Patents
Improvements in carbon products and in their productionInfo
- Publication number
- GB918880A GB918880A GB4394660A GB4394660A GB918880A GB 918880 A GB918880 A GB 918880A GB 4394660 A GB4394660 A GB 4394660A GB 4394660 A GB4394660 A GB 4394660A GB 918880 A GB918880 A GB 918880A
- Authority
- GB
- United Kingdom
- Prior art keywords
- graphite
- explosive
- tube
- round
- water
- 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
Classifications
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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
- C04B35/515—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
- C04B35/64—Burning or sintering processes
- C04B35/645—Pressure sintering
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/48—Compounds containing oxirane rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms, e.g. ester or nitrile radicals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F22/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides or nitriles thereof
- C08F22/30—Nitriles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
-
- 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
- C04B2235/74—Physical characteristics
- C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
- C04B2235/787—Oriented grains
-
- 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)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
Compacted graphite having a density of at least 1,9 g/cc. and a relative crystallite alignment not exceeding 70% is produced by initiating a <PICT:0918880/III/1> <PICT:0918880/III/2> detonating explosive round a mass of graphite. In the Figures, 1 is a mass of graphite powder in a seamless steel tube 2 closed with stoppers 3, 4. 5 is a wrap of detonating explosive around tube 2, and 6 is a layer of detonating explosive around inert cone 7. 8 is an electric blasting cap. In Fig. 2, explosive 5 surrounds a retainer element, e.g. cardboard tube 10, maintaining an annulus of water 11 between tube 2 and explosive 5. One or more line wave generators 14 are attached to explosive 5 by taping around its periphery. The whole assembly may be submerged in water as shown. When blasting cap 8 is actuated, either explosive 6 or line wave generator 14 is initiated, which initiates explosive 5, the detonation then proceeding down the whole length of explosive 5. This constricts tube 2 and compresses the graphite. Explosives having detonation velocities of 4000 to 5000 metres per sec. are preferred, e.g. TNT, HMX, PETN, or nitroglycerine based explosives. In place of the annulus of water (Fig. 2), cardboard or foamed polystyrene may be used. To prevent the formation of cracks, the tube containing the compacted graphite may be heated to 400 DEG -500 DEG C. before removal. Graphite may be produced in the form of rods, slabs, sheets, or tubes. The tubes are made round a steel mandrel which is removed by hand, or round a low melting alloy mandrel which is removed by melting. Specifications 863,194, 876,951 and 878,196 are referred to.ALSO:Graphite articles having a density of at least 1,9 g/c.c. and a relative crystallite alignment not exceeding 70% are produced by initiating explosion in a detonating explosive surrounding a mass of graphite powder. The explosive surrounding the powder is preferably initiated at one end and substantially simultaneously at all points on the periphery of that end. For uniform compression the graphite may be enclosed in a steel tube. A liquid, e.g. water, may be interposed between the explosive and the tube containing the graphite, and the whole assembly may be submerged in water. Graphite articles may be obtained in the form of rods, slabs, sheets or tubes. The tubes are obtained by compressing the graphite round a steel mandrel which is removed by hand, or round a low melting alloy mandrel which is removed by melting. Specifications 863,194, 876,951 and 878,196 are referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86164959A | 1959-12-23 | 1959-12-23 | |
US6755960A | 1960-11-07 | 1960-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB918880A true GB918880A (en) | 1963-02-20 |
Family
ID=26748010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4394660A Expired GB918880A (en) | 1959-12-23 | 1960-12-21 | Improvements in carbon products and in their production |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB918880A (en) |
NL (1) | NL259428A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3248592A (en) * | 1963-09-10 | 1966-04-26 | Varian Associates | Anisotropic arc-spark emission electrodes |
US3307063A (en) * | 1962-03-02 | 1967-02-28 | Thomson Houston Comp Francaise | Grid electrode made of pyrolytic graphite |
US4039145A (en) * | 1974-09-06 | 1977-08-02 | Air-Industrie | Electrostatic powdering nozzle |
GB2170489A (en) * | 1984-12-21 | 1986-08-06 | Leslie James Mayne | An apparatus for crystallising carbon |
-
0
- NL NL259428D patent/NL259428A/xx unknown
-
1960
- 1960-12-21 GB GB4394660A patent/GB918880A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3307063A (en) * | 1962-03-02 | 1967-02-28 | Thomson Houston Comp Francaise | Grid electrode made of pyrolytic graphite |
US3248592A (en) * | 1963-09-10 | 1966-04-26 | Varian Associates | Anisotropic arc-spark emission electrodes |
US4039145A (en) * | 1974-09-06 | 1977-08-02 | Air-Industrie | Electrostatic powdering nozzle |
GB2170489A (en) * | 1984-12-21 | 1986-08-06 | Leslie James Mayne | An apparatus for crystallising carbon |
Also Published As
Publication number | Publication date |
---|---|
NL259428A (en) |
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