FR2365539A1 - Reducing the permeability of carbon or graphite objects - by impregnation with a suspension of colloidal graphite - Google Patents
Reducing the permeability of carbon or graphite objects - by impregnation with a suspension of colloidal graphiteInfo
- Publication number
- FR2365539A1 FR2365539A1 FR7723744A FR7723744A FR2365539A1 FR 2365539 A1 FR2365539 A1 FR 2365539A1 FR 7723744 A FR7723744 A FR 7723744A FR 7723744 A FR7723744 A FR 7723744A FR 2365539 A1 FR2365539 A1 FR 2365539A1
- Authority
- FR
- France
- Prior art keywords
- graphite
- impregnation
- suspension
- permeability
- carbon
- 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.)
- Withdrawn
Links
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
- 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
- C04B35/521—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 obtained by impregnation of carbon products with a carbonisable material
-
- 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
- C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Carbon And Carbon Compounds (AREA)
- Ceramic Products (AREA)
Abstract
The permeability of a carbon object is reduced by using a min. pressure of 1.014 atmos. to impregnate the object with a liq. suspension contg. (by wt) na) 95-99.9% of a (non)polar liq. with freezing point below room temp.; and (b) 0.01-5 % fine carbonaceous particles. The prod. is used e.g. for the impregnation of graphite reaction vessels and pipes used in the chemical and metallurgical industries. Graphite is an excellent material for such uses but is disadvantage is its porosity. The process requires neither high temps. nor pressures to impregnate the object. Impregnation can be achieved using an aq. suspension e.g. of colloidal graphite, at room temp., forced into the pores of the graphite by compressed air.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72629476A | 1976-09-24 | 1976-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2365539A1 true FR2365539A1 (en) | 1978-04-21 |
Family
ID=24918009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7723744A Withdrawn FR2365539A1 (en) | 1976-09-24 | 1977-08-02 | Reducing the permeability of carbon or graphite objects - by impregnation with a suspension of colloidal graphite |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5340008A (en) |
AU (1) | AU2901577A (en) |
BR (1) | BR7706356A (en) |
DE (1) | DE2742703A1 (en) |
FR (1) | FR2365539A1 (en) |
IT (1) | IT1086368B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0521747A1 (en) * | 1991-06-17 | 1993-01-07 | Societe Europeenne De Propulsion | Method for homogenous introducing of a solid charge in a porous substrate |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114804922B (en) * | 2021-01-21 | 2024-05-14 | 邓茜丹 | Air gouging carbon rod copper plating pretreatment hole sealing agent and preparation method thereof |
-
1977
- 1977-08-02 FR FR7723744A patent/FR2365539A1/en not_active Withdrawn
- 1977-09-20 JP JP11226477A patent/JPS5340008A/en active Pending
- 1977-09-22 AU AU29015/77A patent/AU2901577A/en active Pending
- 1977-09-22 IT IT2784777A patent/IT1086368B/en active
- 1977-09-22 DE DE19772742703 patent/DE2742703A1/en active Pending
- 1977-09-23 BR BR7706356A patent/BR7706356A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0521747A1 (en) * | 1991-06-17 | 1993-01-07 | Societe Europeenne De Propulsion | Method for homogenous introducing of a solid charge in a porous substrate |
US5281439A (en) * | 1991-06-17 | 1994-01-25 | Societe Europeenne De Propulsion | Process for uniformly integrating a solid charge within a porous substrate |
Also Published As
Publication number | Publication date |
---|---|
DE2742703A1 (en) | 1978-03-30 |
IT1086368B (en) | 1985-05-28 |
AU2901577A (en) | 1979-03-29 |
JPS5340008A (en) | 1978-04-12 |
BR7706356A (en) | 1978-08-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69226203D1 (en) | MATERIALS WITH LOW DENSITY AND HIGH SPECIFIC SURFACE AND ARTICLES MOLDED THEREOF FOR USE IN METAL RECOVERY | |
GB1465768A (en) | Apparatus for the removal of carbon dioxide from air | |
ES469257A1 (en) | Dual pore-structure artificial carbon and graphite | |
GB1317128A (en) | Extraction of nickel and cobalt from oside ores | |
CA2196381A1 (en) | Method of Storing and Transporting Gases | |
FR2365539A1 (en) | Reducing the permeability of carbon or graphite objects - by impregnation with a suspension of colloidal graphite | |
DE3663112D1 (en) | Process for manufacturing an inorganic membrane support for separation techniques | |
DK446385A (en) | PROCEDURE AND APPARATUS FOR IMPROVING TREATED MATERIAL | |
GB2014868A (en) | Hydrophobic inorganic membrane for gas transport | |
GB1278514A (en) | Improvements in or relating to the manufacture of cellular activated alumina shapes | |
GB827763A (en) | Threaded carbon member for connecting carbon electrodes and method of making same | |
FR2416520A1 (en) | Porous sintered aluminium (alloy) body - produced by liq. phase sintering of different aluminium alloy powders | |
GB1013056A (en) | Process for the densification of carbonaceous bodies | |
GB1371905A (en) | Olefin hydration catalyst and use thereof in alcohol production | |
GB899698A (en) | A process for regenerating iron oxide-containing oxidizing agents | |
SU390327A1 (en) | ISSYUZNYPYTNGG o-t; 'y; 1; -; pn! ^ AJ | | |
GB1304291A (en) | ||
Kamenetskaya et al. | The Effect of Graphitizing Elements on the Equilibria with the Melt in the Iron--Carbon System under High Pressures | |
Shkrabina et al. | Porous structure of alumina ceramic support for gas separation membranes, II. Study of porous structure of ceramic composition | |
GB1368685A (en) | Purifying gases containing mercury or mercury and oxygen as impurities | |
GB972686A (en) | A process for producing a sintered metallic article | |
GB1158958A (en) | Method and Apparatus for Making Glass. | |
GB864878A (en) | Improvements in or relating to refractory bricks | |
FR2236962A1 (en) | Silicon carbide coating prodn. on graphite - by heating in an atmosphere of silicon vapour | |
Okano et al. | The Effect of Fluid Inertia on the Performance of Externally Pressurized Porous Gas Bearings--the Performance of a Circular Thrust Bearing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |