DE1015081B - Process for the production of a transparent, electrically conductive, firmly adhering layer for the dissipation of electrostatic charges from highly insulating and strongly polarizable plastics - Google Patents
Process for the production of a transparent, electrically conductive, firmly adhering layer for the dissipation of electrostatic charges from highly insulating and strongly polarizable plasticsInfo
- Publication number
- DE1015081B DE1015081B DEM25951A DEM0025951A DE1015081B DE 1015081 B DE1015081 B DE 1015081B DE M25951 A DEM25951 A DE M25951A DE M0025951 A DEM0025951 A DE M0025951A DE 1015081 B DE1015081 B DE 1015081B
- Authority
- DE
- Germany
- Prior art keywords
- plastics
- transparent
- electrically conductive
- graphite
- production
- 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
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Laminated Bodies (AREA)
Description
Verfahren zur Herstellung einer durchsichtigen, elektrisch leitenden, festhaftenden Schicht zur Ableitung elektrostatischer Aufladungen von hochisolierenden und stark polarisierbaren Kunststoffen Die Verwendung von Kunstharzglas als Skalenglas einfacher Meßinstrumente bietet gegenüber gewöhnlichem Glas die bekannten Vorteile einer wesentlich erhöhten Bruchsicherheit, einer einfacheren Bearbeitbarkeit und vielseitigere Gestaltungsmöglichkeiten. Process for the production of a transparent, electrically conductive, firmly adhering layer for the dissipation of electrostatic charges from highly insulating ones and highly polarizable plastics The use of synthetic resin glass as a graduated glass simple measuring instruments offers the known advantages over ordinary glass a significantly increased break resistance, easier machinability and more versatile design options.
Jedoch scheitert die Verwendung von gewöhnlichem Kunstharzglas häufig an der bei Berührung dieses Glases auftretenden elektrostatischen Aufladung. Versucht man z.B., das Kunstharzglas abzuwischen, so treten elekfrostatische Kräfte zwischen Glas und Zeiger auf, welche eine brauchbare Messung oft für viele Stunden unmöglich machen. Meist wirken schon bei einfacher Berührung, infolge des hohen Isolationswiderstandes und der hohen Polarisierbarkeit, Kräfte in der Größenordnung von einigen Milligramm auf den Zeiger. However, the use of ordinary synthetic resin glass often fails the electrostatic charge that occurs when this glass is touched. Tries For example, if you wipe the synthetic resin glass, electrostatic forces intervene Glass and pointer on which a usable measurement is often impossible for many hours do. Most of the time they work with a simple touch, due to the high insulation resistance and the high polarizability, forces on the order of a few milligrams on the pointer.
Es ist seit langem bekannt, diese Aufladungen durch Aufbringen von Glyzerin oder anderen schwer verdampfbaren und leitenden Flüssigkeiten zu unterbinden. Verschiedene solcher Produkte sind auch im Handel erhältlich. Diese Stoffe haben den Vorzug, daß sie die Transparenz des Skalenglases auch bei relativ großen Schichtdicken kaum beeinträchtigen, da hier Ionen die Leitungsträger sind. Ein entscheidender Nachteil dieser Schichten ist jedoch der Umstand, daß sie spätestens nach einigen Monaten infolge der Verdunstung der Flüssigkeit unwirksam werden. It has long been known to produce these charges by applying To prevent glycerine or other difficult to evaporate and conductive liquids. Various such products are also commercially available. These substances have the advantage that they maintain the transparency of the scale glass even with relatively large layer thicknesses hardly affect, since ions are the conduction carriers here. A crucial one The disadvantage of these layers, however, is the fact that they are at the latest after a few Months due to evaporation of the liquid.
Ein anderer Lösungsweg ist der Beschuß des Ixunstharzes mit energiereichen Strahlen, welche Störstellen als Leitungszentren bilden. Die Leitfähigkeit des Kunstharzes nimmt jedoch auch bei sehr starkem Beschuß nur wenig zu, so daß sich die Aufladung vermindern, jedoch nicht beseitigen läßt. Another approach is to bombard the synthetic resin with high-energy Rays which form imperfections as conduction centers. The conductivity of the synthetic resin however, increases only a little even with very strong bombardment, so that the charge can be reduced, but not eliminated.
Schließlich ist es auch noch bekannt, durch Aufdampfen einer dünnen Metallschicht einen leitenden Üheriug herzustellen. Diese Schichten beheben bei geeigneter Dimensionierung die elektrostatischen Aufladungen vollständig und dauerhaft. Eine große Schwierigkeit besteht jedoch in der fabrikatorischen Dosierung der Schichtdicke. Ist die Schicht zu dick, so ist infolge der Elektronenleibung die Lichtabsorption zu groß. Bei einer zu dünnen Schicht tritt infolge von Inselbildung keine elektrische Leitung ein. Außerdem sind solche Aufdampfschichten nicht sehr wischfest. Finally it is also known by vapor deposition of a thin Metal layer to produce a conductive Üheriug. These layers fix at suitably dimensioned the electrostatic charges completely and permanently. A great difficulty, however, is the metering of the layer thickness in the factory. If the layer is too thick, the light absorption is due to the electron exposure too large. If the layer is too thin, no electrical occurs due to island formation Line on. In addition, such vapor-deposited layers are not very resistant to wiping.
Sie erfordern eine kostspielige Hochvakuumanlage und geschultes Bedienungspersonal. They require an expensive high vacuum system and trained operating personnel.
Diese Nachteile werden bei einem Verfahren zur Herstellung einer durchsichtigen, elektrisch leitenden, festhaftenden Schicht zur Ableitung elektrostatischer Aufladungen von hochisolierenden und stark polarisierbaren Kunststoffen dadurch vermieden, daß erfindungsgemäß diese Schicht durch Auftragen von -Graphit hergestellt wird. These disadvantages are in a method for making a transparent, electrically conductive, firmly adhering layer for the dissipation of electrostatic Charging of highly insulating and strongly polarizable plastics as a result avoided that, according to the invention, this layer is produced by applying graphite will.
Das hohe Gleitvermögen der hexagonalen Kristall- netzehene erzeugt beim Auftragen des z.B. pulverförmigen Graphits eine drahtzaunähnliche, mehrlagige leitende Schicht, welche nur einen geringen Bruchteil der Fertigungskosten verursacht wie etwa das Aufdampfen. The high sliding properties of the hexagonal crystal netzehene generated When applying the e.g. powdery graphite a wire fence-like, multi-layer conductive layer, which causes only a small fraction of the manufacturing costs such as vapor deposition.
Beispiel für die praktische Anwendung bei Kunstharzgläsern: Die zu belegende Seite des Kunstharzglases wird mit kolloidalem Graphit bestreut. Diese Schicht wird mit einem Wollappen unter großem Druck »eingerieben«. Man schüttelt danach den überschüssigen Graphit ab und poliert die anfänglich. graue Scheibe so lange, bis das Glas etwa 98°/o seiner ursprünglichen Transparenz erreicht hat. Example of practical use in synthetic resin glasses: The zu The covering side of the synthetic resin glass is sprinkled with colloidal graphite. These The layer is "rubbed in" with a woolen cloth under great pressure. One shakes then the excess graphite and polish the initially. gray disk like that long until the glass has reached about 98% of its original transparency.
Natürlich ist die Anwendung einer so hergestellten antistatischen Schicht nicht nur auf die im Beispiel beschriebene Verwendung bei Kunstharzgläsern beschränkt. Zum Beispiel bedingen die elektrostatischen Aufladungen auch die Anziehung von Staub bei Kunststoffen im allgemeinen und bei verschiedenen Lacksoften. Auch hier läßt sich die Störung durch Auftragen einer Graphitschicht beseitigen. Of course, the application of such a manufactured antistatic Layer not only on the use described in the example for synthetic resin glasses limited. For example, the electrostatic charges also cause attraction of dust in plastics in general and in various paint softeners. Even here the disturbance can be eliminated by applying a graphite layer.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM25951A DE1015081B (en) | 1955-01-31 | 1955-01-31 | Process for the production of a transparent, electrically conductive, firmly adhering layer for the dissipation of electrostatic charges from highly insulating and strongly polarizable plastics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM25951A DE1015081B (en) | 1955-01-31 | 1955-01-31 | Process for the production of a transparent, electrically conductive, firmly adhering layer for the dissipation of electrostatic charges from highly insulating and strongly polarizable plastics |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1015081B true DE1015081B (en) | 1957-09-05 |
Family
ID=7299687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM25951A Pending DE1015081B (en) | 1955-01-31 | 1955-01-31 | Process for the production of a transparent, electrically conductive, firmly adhering layer for the dissipation of electrostatic charges from highly insulating and strongly polarizable plastics |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1015081B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1223910B (en) * | 1960-09-28 | 1966-09-01 | Siemens Ag | Process for the production of printed circuits on insulating carriers |
DE2211115A1 (en) * | 1972-03-08 | 1973-09-20 | Auergesellschaft Gmbh | ANTISTATIC TRANSPARENT SCALE CAP MADE OF PLASTIC FOR MEASURING INSTRUMENTS |
DE2706475A1 (en) * | 1977-02-16 | 1978-08-17 | Kabel Metallwerke Ghh | Graphite layer application on cable insulation - involves series of rotating drums containing powder and several smoothing devices |
DE102022119490A1 (en) | 2022-08-03 | 2024-02-08 | Ingo Schneider | Production of carbon-coated plastic films and plastic films |
-
1955
- 1955-01-31 DE DEM25951A patent/DE1015081B/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1223910B (en) * | 1960-09-28 | 1966-09-01 | Siemens Ag | Process for the production of printed circuits on insulating carriers |
DE2211115A1 (en) * | 1972-03-08 | 1973-09-20 | Auergesellschaft Gmbh | ANTISTATIC TRANSPARENT SCALE CAP MADE OF PLASTIC FOR MEASURING INSTRUMENTS |
DE2706475A1 (en) * | 1977-02-16 | 1978-08-17 | Kabel Metallwerke Ghh | Graphite layer application on cable insulation - involves series of rotating drums containing powder and several smoothing devices |
DE102022119490A1 (en) | 2022-08-03 | 2024-02-08 | Ingo Schneider | Production of carbon-coated plastic films and plastic films |
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