DE1137372B - Process for the production of a mica-containing paper or cardboard-shaped insulation material - Google Patents
Process for the production of a mica-containing paper or cardboard-shaped insulation materialInfo
- Publication number
- DE1137372B DE1137372B DES59434A DES0059434A DE1137372B DE 1137372 B DE1137372 B DE 1137372B DE S59434 A DES59434 A DE S59434A DE S0059434 A DES0059434 A DE S0059434A DE 1137372 B DE1137372 B DE 1137372B
- Authority
- DE
- Germany
- Prior art keywords
- mica
- cardboard
- insulation material
- production
- containing paper
- 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.)
- Pending
Links
- 239000010445 mica Substances 0.000 title claims description 17
- 229910052618 mica group Inorganic materials 0.000 title claims description 17
- 239000012774 insulation material Substances 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 239000011521 glass Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000011111 cardboard Substances 0.000 claims description 2
- 239000011087 paperboard Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 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
- C04B30/00—Compositions for artificial stone, not containing binders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Description
Verfahren zur Herstellung eines ghmmerhaltigen Papier- oder pappenförmigen Isolationsmaterials Die Erfindung betrifft ein Verfahren zur Herstellung eines Papier- oder pappenartigen glimmerhaltigen Isolationsmaterials, und zwar unter Zugrundelegung des bekannten Verfahrens zur Aufbereitung des Glimmers nach der französischen Patentschrift 1005 600. Man erhält Glimmerschüppchen hoher Oberflächenaktivität, wenn man Glimmer bei etwa 800° C - die anzuwendende Temperatur hängt von der Glimmersorte ab - eine bestimmte Zeit, beispielsweise 10 bis 15 Minuten, erhitzt, d. h. kalziniert. Die Kalzination geht dabei nicht bis zur völligen Austreibung des Kristallwassers, sondern es bleibt ein gewisser Rest Kristallwasser im Glimmer. Wird dieser teilweise kalzinierte Glimmer dann in einer Flüssigkeit, im allgemeinen Wasser, fein verteilt, so nimmt die Suspension Eigenschaften an, die in vieler Beziehung denen eines Papierbreies gleichen. Man spricht daher auch in Analogie zur Papierherstellung von einer Glimmerpülpe, die dann auf einer Langsiebmaschine weiterverarbeitet werden kann. Gemäß der Erfindung wird zur Herstellung eines glimmerhaltigen Papier- oder pappenförmigen Isolationsmaterials auf Glasseide eine Suspension von in feinste Blättchen aufgespaltenem kalziniertem Glimmer aufgetragen, die Flüssigkeit abgesaugt und das aus Glasseide und Glimmerschicht bestehende Material durch Wärmezufuhr getrocknet. Man erhält auf diese Weise ein Isoliermaterial hoher Durchschlagsfestigkeit und hoher Wärmebeständigkeit, das der reinen Glasseide überlegen ist. Glasseide und Glimmerschicht sind so fest miteinander verbunden, daß beim Biegen, wie es bei der Verarbeitung des Materials für die Isolierung von stromführenden Teilen erforderlich ist, kein Abbröckeln oder Abplatzen der Glimmerschicht eintritt.The invention relates to a method for producing a paper or cardboard-like mica-containing insulation material based on the known method for processing mica according to French patent 1 005 600. Mica flakes of high surface activity are obtained, if you heat mica at about 800 ° C - the temperature to be used depends on the type of mica - a certain time, for example 10 to 15 minutes, that is, calcined. The calcination does not go as far as the complete expulsion of the crystal water, but a certain amount of crystal water remains in the mica. If this partially calcined mica is then finely dispersed in a liquid, generally water, the suspension takes on properties which in many respects resemble those of paper pulp. In analogy to paper production, one speaks of a mica pulp, which can then be further processed on a Fourdrinier machine. According to the invention, to produce a mica-containing paper or cardboard insulation material on glass silk, a suspension of calcined mica split into very fine flakes is applied, the liquid is sucked off and the material consisting of glass silk and mica layer is dried by supplying heat. In this way, an insulating material of high dielectric strength and high heat resistance is obtained which is superior to pure glass fiber. Glass fiber and mica layer are so firmly connected that when bending, as is necessary when processing the material for the insulation of current-carrying parts, the mica layer does not crumble or flake off.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES59434A DE1137372B (en) | 1953-07-20 | 1953-07-20 | Process for the production of a mica-containing paper or cardboard-shaped insulation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES59434A DE1137372B (en) | 1953-07-20 | 1953-07-20 | Process for the production of a mica-containing paper or cardboard-shaped insulation material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1137372B true DE1137372B (en) | 1962-09-27 |
Family
ID=7493308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES59434A Pending DE1137372B (en) | 1953-07-20 | 1953-07-20 | Process for the production of a mica-containing paper or cardboard-shaped insulation material |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1137372B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3434872A (en) * | 1964-08-17 | 1969-03-25 | English Electric Co Ltd | Glass fabric reinforced mica tape and process for production thereof |
-
1953
- 1953-07-20 DE DES59434A patent/DE1137372B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3434872A (en) * | 1964-08-17 | 1969-03-25 | English Electric Co Ltd | Glass fabric reinforced mica tape and process for production thereof |
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