GB992815A - Production of reconstituted mica articles - Google Patents
Production of reconstituted mica articlesInfo
- Publication number
- GB992815A GB992815A GB24919/62A GB2491962A GB992815A GB 992815 A GB992815 A GB 992815A GB 24919/62 A GB24919/62 A GB 24919/62A GB 2491962 A GB2491962 A GB 2491962A GB 992815 A GB992815 A GB 992815A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mat
- mica
- temperature
- aqueous solution
- dried
- 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
- 239000010445 mica Substances 0.000 title abstract 6
- 229910052618 mica group Inorganic materials 0.000 title abstract 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 238000003825 pressing Methods 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 230000001680 brushing effect Effects 0.000 abstract 1
- 238000003776 cleavage reaction Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000005470 impregnation Methods 0.000 abstract 1
- 238000010348 incorporation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000615 nonconductor Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 230000007017 scission Effects 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0002—Construction arrangements of electrode systems
- H01J2893/0005—Fixing of electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Insulating Materials (AREA)
- Insulating Bodies (AREA)
- Paper (AREA)
Abstract
A silica-bonded reconstituted mica mat is made by impregnating a reconstituted mica mat with an aqueous solution of ammonium silicate, drying to remove ammonia, and pressing at a temperature of 75 DEG to 200 DEG C. The initial mica mat may be prepared by cleavage and grinding of mica and incorporation of the mica particles into a mat using well-known paper-making methods. The mat may be impregnated by immersion, spraying, or brushing with an aqueous solution containing from 5% to 30% ammonium silicate and may be dried at a temperature of from 20 DEG to 100 DEG C. The dried mat may be subjected to a pressure of 25 to 2000 p.s.i. at a temperature from 75 DEG to 200 DEG C. for a time exceeding half an hour and, if desired, may be pressed again at the same or different pressure within the above range but at a temperature from 100 DEG to 200 DEG C. Cooling may be effected under pressure. Two or more mats may be placed in layers either prior to the impregnation stage or prior to the pressing stage. The final product may be used as an electrical insulator, and particularly as a spacer in electronic tubes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US120989A US3183115A (en) | 1961-06-30 | 1961-06-30 | Process for preparing bonded reconstituted mica |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB992815A true GB992815A (en) | 1965-05-19 |
Family
ID=22393744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24919/62A Expired GB992815A (en) | 1961-06-30 | 1962-06-28 | Production of reconstituted mica articles |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3183115A (en) |
| JP (1) | JPS4022434B1 (en) |
| CH (2) | CH434492A (en) |
| DE (1) | DE1185975B (en) |
| GB (1) | GB992815A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3804704A (en) * | 1971-12-27 | 1974-04-16 | Gen Electric | Mica paper laminates |
| DE10314977A1 (en) * | 2003-04-02 | 2004-10-14 | H.C. Starck Gmbh | Process for producing silicate shaped bodies |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH277575A (en) * | 1947-05-12 | 1951-09-15 | Samica Societe Des Applic Du M | Process for the manufacture of articles, from mica. |
| US2791262A (en) * | 1952-08-29 | 1957-05-07 | Mica Insulator Company | Sized mica paper and process of preparing the same |
| US2953466A (en) * | 1956-08-09 | 1960-09-20 | North American Aviation Inc | Silicon-mica composition |
| US2917426A (en) * | 1958-09-26 | 1959-12-15 | Du Pont | Felted products and processes containing fibrous boehmite |
-
1961
- 1961-06-30 US US120989A patent/US3183115A/en not_active Expired - Lifetime
-
1962
- 1962-06-28 JP JP2701262A patent/JPS4022434B1/ja active Pending
- 1962-06-28 GB GB24919/62A patent/GB992815A/en not_active Expired
- 1962-06-29 CH CH1422165A patent/CH434492A/en unknown
- 1962-06-29 DE DEG35339A patent/DE1185975B/en active Pending
- 1962-06-29 CH CH788262A patent/CH405446A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4022434B1 (en) | 1965-10-05 |
| DE1185975B (en) | 1965-01-21 |
| US3183115A (en) | 1965-05-11 |
| CH434492A (en) | 1967-04-30 |
| CH405446A (en) | 1966-01-15 |
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