GB1300264A - Improvements in or relating to insulating materials - Google Patents

Improvements in or relating to insulating materials

Info

Publication number
GB1300264A
GB1300264A GB2451670A GB2451670A GB1300264A GB 1300264 A GB1300264 A GB 1300264A GB 2451670 A GB2451670 A GB 2451670A GB 2451670 A GB2451670 A GB 2451670A GB 1300264 A GB1300264 A GB 1300264A
Authority
GB
United Kingdom
Prior art keywords
silica gel
composition
magnesium oxide
insulating material
pressing
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
Application number
GB2451670A
Inventor
Heinrich Keddeinis
Arnold Lenz
Otto Bleh
Erich Termin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of GB1300264A publication Critical patent/GB1300264A/en
Expired legal-status Critical Current

Links

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
    • H01B3/025—Other inorganic 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Insulating Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Silicon Compounds (AREA)

Abstract

1300264 Insulating materials DYNAMIT NOBEL AG 20 May 1970 [21 May 1969] 24516/70 Heading H1A [Also in Division C1] A composition for pressing into an insulating material is formed from (a) a fused or sintered particulate material comprising magnesium oxide and (b) particulate silica gel, the silica gel increasing the resistance of the resulting insulating material. The insulating material may be used to fill a tubular electrical heating element having an electrical heating coil passing therethrough or ceramic insulators may be formed by pressing and sintering the composition. The material comprising magnesium oxide preferably contains at least 94% by weight of magnesium oxide, and the silica gel is preferably 0À1% to 7% of the weight of the composition. The silica gel may have a maximum particle dimension of less than 370 Á, preferably less than 70 Á and may have a specific surface area of 50 to 1100 m.<SP>2</SP>/g.
GB2451670A 1969-05-21 1970-05-20 Improvements in or relating to insulating materials Expired GB1300264A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691925900 DE1925900A1 (en) 1969-05-21 1969-05-21 Process for the production of insulating material with high electrical resistance

Publications (1)

Publication Number Publication Date
GB1300264A true GB1300264A (en) 1972-12-20

Family

ID=5734799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2451670A Expired GB1300264A (en) 1969-05-21 1970-05-20 Improvements in or relating to insulating materials

Country Status (6)

Country Link
AT (1) AT293936B (en)
CA (1) CA930536A (en)
DE (1) DE1925900A1 (en)
ES (1) ES379802A1 (en)
FR (1) FR2043581A1 (en)
GB (1) GB1300264A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985842A (en) * 1972-07-03 1976-10-12 Norton Company Method of making electrical magnesia
GB1433478A (en) * 1972-08-05 1976-04-28 Mcwilliams J A Electrical heating apparatus

Also Published As

Publication number Publication date
CA930536A (en) 1973-07-24
FR2043581A1 (en) 1971-02-19
AT293936B (en) 1971-10-25
DE1925900A1 (en) 1970-11-26
ES379802A1 (en) 1973-02-01

Similar Documents

Publication Publication Date Title
JPS55138007A (en) Porous sintered laminar body of metal and its preparation
IE45538L (en) Varistor
JPS5546130A (en) Oxygen sensor
GB1434033A (en) Thermistors method and equipment for forming a single cloud of radar reflecti
JPS4968130A (en)
GB1480817A (en) Oxide ceramic resistor
US3630968A (en) Oxide having the structural formula (la1-xcax)cro3 where x is between .01 and .15 and a method for producing the same
GB1300264A (en) Improvements in or relating to insulating materials
GB1303284A (en)
GB941947A (en) An improved metal composition and a method of manufacture thereof
JPS5582954A (en) Inflammable gas detector
JPS6461356A (en) Ceramic material
US3682839A (en) Electrical resistance elements
ES448610A1 (en) Heating element composition and method for preparing tube fillings of high electrical resistance from fused magnesium oxide for tubular electric heating elements
GB1262420A (en) Improvements in or relating to voltage overload protectors
JPS5429809A (en) Preparation of damping sintered material
GB1526994A (en) Heating elements
JPS5240793A (en) Improved conductive combined ceramics
JPS55166980A (en) Piezo-electric porcelain structure
JPS5432107A (en) Sintering method using graphite disk
JPS534893A (en) Ceramic electric material with nonnlinear high resistance and method of manufacture thereof
ZA763891B (en) Improvements in or relating to the production of tubes of sintered ceramic material
GB1272781A (en) Conductive metal-to-ceramic glass seal compositions
JPS57179076A (en) High density low electric specific resistance heat impact resistance silicon carbide sintered body and manufacture
GB566161A (en) Improvements relating to sparking plugs

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee