EP0269934B1 - Conductive floor covering - Google Patents
Conductive floor covering Download PDFInfo
- Publication number
- EP0269934B1 EP0269934B1 EP87116835A EP87116835A EP0269934B1 EP 0269934 B1 EP0269934 B1 EP 0269934B1 EP 87116835 A EP87116835 A EP 87116835A EP 87116835 A EP87116835 A EP 87116835A EP 0269934 B1 EP0269934 B1 EP 0269934B1
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- Prior art keywords
- fibers
- layer
- floor covering
- conductive
- length
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0005—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
- D06N7/0039—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by the physical or chemical aspects of the layers
- D06N7/0042—Conductive or insulating layers; Antistatic layers; Flame-proof layers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
- H05F3/025—Floors or floor coverings specially adapted for discharging static charges
Definitions
- the invention relates to a conductive floor covering made of synthetic resin.
- Known conductive floor coverings contain carbon black or graphite or carbon fibers (carbon fibers), which, however, leads to restrictions with regard to the choice of color, or metal powder, metal granules or metal grit, for example made of aluminum, copper or another metal. From DE-B2 17 90 224 it has become known, for example, to add aluminum "spangles", that is to say extremely thin, roughly scale-like film particles. To make conductive coatings achieve, however, the last-mentioned components must be added to the coating material made of synthetic resin or the like in such large quantities that their processability and the mechanical and occasionally also chemical properties of the finished covering are adversely affected.
- the invention is therefore based on the object of developing a coating material based on synthetic resin (epoxy resin or the like) in which the required conductivity values can be achieved with relatively small amounts of additives and in a highly reproducible manner.
- the conductive floor layer contains metal fibers, the diameter of which is up to 0.05 mm, the length is 0.5 mm to 10 mm and the proportion of the fibers is up to 5% by weight.
- the cross section of the fibers can be approximately round or angular or also strip-shaped, the strips being much thinner than in the case of a round cross section, the electrical resistance of these strips then being of the order of magnitude of a fiber with a round cross section of the same length and weight.
- the special one The advantage of the invention is that the amount of these metal fibers (metal wool) required to achieve a certain conductivity for electrostatic charges is so small that it does not impair the mechanical and chemical properties of the synthetic resin used.
- the essence of the invention is that under the influence of the electrostatic charge present on the layer surface at the ends of the fibers, the thickness of which is small compared to their length, high field strengths are formed which, according to the known physical phenomenon, promote the escape of electrons from a tip and thus significantly increase the conductivity of the layer compared to a layer having a spherical metal body.
- the fiber length can be smaller and / or larger than the thickness of the layer. If it is greater than the coating thickness, conductive bridges are formed within the layer between the upper and the lower surface of the layer, which, however, because of the small diameter of the fibers and because of the statistically small number of bridges, only have the relatively low conductivity that is required for dissipative Resin floors is desired.
- the conductivity of such electrostatic charges preventing layers according to the invention from about 10 ⁇ 4 to 10 ⁇ 6 Ohm ⁇ 1, which are common for such floors, are already achieved with relatively small additions of these metal fibers, which are about 1 / 10th to 1 / 100th Amount of weight that is required to achieve these conductivity values when adding spherical particles.
- Fibers made of metal are advantageous because metal fibers of this small thickness can be produced relatively easily, are commercially available and are considerably more stable than carbon fibers and thus practically do not change their length during incorporation and processing, and because the specific resistance of a particular metal or one Metal alloy is a material property that is essentially independent of the manufacture.
- the fibers can either be added to the coating composition immediately during manufacture or the fibers can be subsequently incorporated into the already mixed coating compositions.
- the mechanical and electrical properties of the conductive layer can be reproduced both by the amount of metal fibers added, for example up to 5% by weight of the layer material, but preferably up to 1% by weight of the synthetic resin used for coating, and by a suitable choice of the length of the fibers vary.
- the metal fibers consist of such a metallic, for example, elastic material, for example of steel or of bronze or the like, that the fibers are not broken, but rather their length, when the layer is processed and the fiber material is mixed into the synthetic resin mixture and also, within certain limits, keep their shape so that the electrical ones and reproducible mechanical properties of the conductive layer, which are attributed to a certain fiber length.
- the material of the fibers consists of stainless steel. This has the advantage that the fibers do not chemically react with the synthetic resin or with a moisture film that forms on the surface of the conductive layer.
- the fibers of a layer have different lengths. In other embodiments of the invention, all of the fibers of the layer are of substantially the same length. In this case, the mechanical and electrical values of the conductive layer can be set particularly well.
- the thickness of the fibers is up to 0.05 mm, preferably 0.01 mm and their length is between 1 mm and 1 cm, preferably 0.5 cm, in another embodiment 0.5 mm to 10 mm, preferably 1 mm.
- Fibers made of a chemically inactive material for example stainless steel or the like, have the additional advantage that the resistance value of the layer remains constant even over a long period of time because the fibers do not corrode and do not react chemically with their surroundings.
- electrostatically conductive floor coatings based on epoxy, polyurethane, acrylate or unsaturated polyester resins are laid in the form of a multi-layer structure shown in the drawing as an example:
- Horizontal conductive base layer 2 usually made electrically conductive using special carbon blacks and / or graphite.
- This layer can be solvent-free or contain.
- suitable devices e.g. the earth connection is made by embedding or gluing copper strips.
- Top or wear layer 3 which is applied depending on the additive used up to layer thicknesses of several millimeters. It is primarily vertically conductive, but may also have a horizontal electrical conductivity.
- composition of conductive layers are given below:
- Resin component A highly pigmented, solvent-free epoxy resin based on bisphenol A and / or F.
- Hardener Comp. B Polyamine or polyaminoamide preparation emulsified in water, mixed with fillers and quartz aggregates, with 0.5% by weight steel fiber with a length of 6 mm Mixing ratio: Comp. A to B 1: 2 parts by weight Layer thickness to be applied: 0.5 - 2 mm Earth conductor resistance according to DIN 51953: approx. 105 ohms
- Resin component A see example 1 Hardener Comp.
- B Polyamine or polyaminoamide preparation emulsified in water, mixed with fillers and quartz aggregates, with 1% by weight steel fiber with a length of 1 mm Mixing ratio: compo.
- Resin comp. A Low pigmented, solvent free epoxy resin based on bisphenol A and / or F, modified with a viscosity of approx.1,000m Pa-s / 20 ° C with 1% by weight steel fiber with a length of 1 mm.
- Hardener Comp. B Modified cycloaliphatic polyamine adduct Mixing ratio: Comp. A to B 2: 1 parts by weight Layer thickness to be applied: 0.5 - 1.5 mm, on a sufficiently horizontally conductive base layer (e.g. base layer according to Example 1). Earth leakage resistance according to DIN 51 953: approx. 106 ohms
- the amounts of the added metal fibers can be up to 5% by weight of the amount of resin in embodiments of the invention.
- the length of the fibers is large compared to their diameter, e.g. B. 100 times larger than its thickness.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
- Floor Finish (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen leitfähigen Fußbodenbelag aus Kunstharz.The invention relates to a conductive floor covering made of synthetic resin.
Bekannte leitfähige Fußbodenbeläge enthalten Ruß oder Graphit oder Kohlefasern (Carbonfasern), was jedoch zu Einschränkungen hinsichtlich der Farbtonauswahl führt, oder Metallpulver, Metallgranulate oder Metallgriese z.B. aus Aluminium, Kupfer oder einem anderen Metall. Durch die DE-B2 17 90 224 ist es z.B. bekannt geworden, Aluminium-"flitter" beizumischen, also extrem dünne, etwa schuppenförmige Folienteilchen. Um ableitfähige Beschichtungen zu erzielen, müssen jedoch gerade die zuletzt genannten Bestandteile in so großen Mengen dem Beschichtungsmaterial aus Kunstharz oder dgl. zugesetzt werden, daß dessen Verarbeitbarkeit und die mechanischen und gelegentlich auch chemischen Eigenschaften des fertigen Belages ungünstig beeinflußt werden. Bei Kohlefasern (Carbonfasern) schwankt der spezifische Widerstand des Werkstoffes infolge der bei ihrer Herstellung erfolgenden unvollständigen Verbrennung von Acryl-Verbindungen von Charge zu Charge sehr stark. Außerdem brechen diese Fasern infolge ihrer Sprödigkeit verhältnismäßig leicht, so daß die Leitfähigkeit der fertigen Schicht von der Dauer und Intensität des Rührens beim Einbringen der Kohlefasern in das Schichtmaterial und bei dessen Verarbeitung abhängt.Known conductive floor coverings contain carbon black or graphite or carbon fibers (carbon fibers), which, however, leads to restrictions with regard to the choice of color, or metal powder, metal granules or metal grit, for example made of aluminum, copper or another metal. From DE-B2 17 90 224 it has become known, for example, to add aluminum "spangles", that is to say extremely thin, roughly scale-like film particles. To make conductive coatings achieve, however, the last-mentioned components must be added to the coating material made of synthetic resin or the like in such large quantities that their processability and the mechanical and occasionally also chemical properties of the finished covering are adversely affected. In the case of carbon fibers, the specific resistance of the material fluctuates greatly from batch to batch due to the incomplete combustion of acrylic compounds that occurs during their manufacture. In addition, these fibers break relatively easily due to their brittleness, so that the conductivity of the finished layer depends on the duration and intensity of the stirring when the carbon fibers are introduced into the layer material and during its processing.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Beschichtungswerkstoff auf der Grundlage von Kunstharz (Epoxidharz oder dgl.) zu entwickeln, bei dem die erforderlichen Leitfähigkeitswerte bereits mit verhältnismäßig geringen Mengen an Zusatzstoffen und in hohem Maße reproduzierbar erreicht werden.The invention is therefore based on the object of developing a coating material based on synthetic resin (epoxy resin or the like) in which the required conductivity values can be achieved with relatively small amounts of additives and in a highly reproducible manner.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die leitfähige Fußbodenschicht Metallfasern enthält, deren Durchmesser bis zu 0,05 mm, deren Länge 0,5 mm bis 10 mm und deren Anteil der Fasern bis zu 5 Gew.% beträgt. Der Querschnitt der Fasern kann etwa rund oder eckig oder auch streifenförmig sein, wobei die Streifen wesentlich dünner sind als im Falle eines runden Querschnittes, der elektrische Widerstand dieser Streifen liegt dann in der Größenordnung einer Faser mit rundem Querschnitt gleicher Länge und Gewicht. Der besondere Vorteil der Erfindung liegt darin, daß die zum Erreichen einer bestimmten Ableitfähigkeit für elektrostatische Ladungen erforderliche Menge dieser Metallfasern (Metallwolle) so gering ist, daß sie die mechanischen und die chemischen Eigenschaften des verwendeten Kunstharzes nicht beeinträchtigt.This object is achieved according to the invention in that the conductive floor layer contains metal fibers, the diameter of which is up to 0.05 mm, the length is 0.5 mm to 10 mm and the proportion of the fibers is up to 5% by weight. The cross section of the fibers can be approximately round or angular or also strip-shaped, the strips being much thinner than in the case of a round cross section, the electrical resistance of these strips then being of the order of magnitude of a fiber with a round cross section of the same length and weight. The special one The advantage of the invention is that the amount of these metal fibers (metal wool) required to achieve a certain conductivity for electrostatic charges is so small that it does not impair the mechanical and chemical properties of the synthetic resin used.
Das Wesen der Erfindung liegt darin, daß unter Einfluß der an der Schichtoberfläche vorhandenen elektrostatischen Aufladung an den Enden der Fasern, deren Dicke klein gegen ihre Länge ist, sich hohe Feldstärken ausbilden, die nach dem bekannten physikalischen Phänomen den Austritt von Elektronen aus einer Spitze begünstigen und damit die Leitfähigkeit der Schicht gegenüber einer kugelförmigen Metallkörper aufweisenden Schicht wesentlich erhöhen.The essence of the invention is that under the influence of the electrostatic charge present on the layer surface at the ends of the fibers, the thickness of which is small compared to their length, high field strengths are formed which, according to the known physical phenomenon, promote the escape of electrons from a tip and thus significantly increase the conductivity of the layer compared to a layer having a spherical metal body.
Bei Ausführungsformen der Erfindung kann die Faserlänge kleiner und/ oder größer sein als die Dicke der Schicht. Ist sie größer als die Beschichtungsdicke, so entstehen innerhalb der Schicht leitfähige Brücken zwischen der oberen und der unteren Fläche der Schicht, die jedoch wegen des geringen Durchmessers der Fasern und wegen der statistisch geringen Anzahl der Brücken nur die verhältnismäßig geringe Leitfähigkeit aufweisen, die für ableitfähige Kunstharzfußböden erwünscht ist. Die Leitfähigkeit derartiger elektrostatische Aufladungen verhindernder erfindungsgemäßen Schichten von ca. 10⁻⁴ bis 10⁻⁶ Ohm⁻¹, die für solche Böden üblich sind, werden bereits mit verhältnismäßig kleinen Zusätzen von diesen Metallfasern erreicht, die etwa 1/10tel bis 1/100tel der Gewichtsmenge betragen, die zur Erreichung dieser Leitfähigkeitswerte bei Zusatz von sphärischen Partikeln erforderlich ist. Die Verwendung von derartigen Fasern aus Metall ist deshalb vorteilhaft, weil Metallfasern dieser geringen Dicke verhältnismäßig einfach hergestellt werden können, im Handel erhältlich sind und wesentlich stabiler sind als Kohlefasern und damit beim Einarbeiten und Verarbeiten ihre Länge praktisch nicht verändern, und weil der spezifische Widerstand eines bestimmten Metalls oder einer Metallegierung eine von der Herstellung im wesentlichen unabhängige Materialeigenschaft ist.In embodiments of the invention, the fiber length can be smaller and / or larger than the thickness of the layer. If it is greater than the coating thickness, conductive bridges are formed within the layer between the upper and the lower surface of the layer, which, however, because of the small diameter of the fibers and because of the statistically small number of bridges, only have the relatively low conductivity that is required for dissipative Resin floors is desired. The conductivity of such electrostatic charges preventing layers according to the invention from about 10⁻⁴ to 10⁻⁶ Ohm⁻¹, which are common for such floors, are already achieved with relatively small additions of these metal fibers, which are about 1 / 10th to 1 / 100th Amount of weight that is required to achieve these conductivity values when adding spherical particles. The use of such Fibers made of metal are advantageous because metal fibers of this small thickness can be produced relatively easily, are commercially available and are considerably more stable than carbon fibers and thus practically do not change their length during incorporation and processing, and because the specific resistance of a particular metal or one Metal alloy is a material property that is essentially independent of the manufacture.
Die Fasern können entweder gleich bei der Herstellung der Beschichtungsmasse in diese beigemischt werden oder aber können die Fasern nachträglich in die schon fertig gemischten Beschichtungsmassen eingearbeitet werden. Je größer die Länge der Fasern im Vergleich zu der Schichtdicke der fertigen leitfähigen Schicht ist, desto größer ist die Zahl der durch die Kunstharzschicht hindurch verlaufenden leitfähigen Brücken. Sowohl durch die Menge der zugesetzten Metallfasern, beispielsweise bis zu 5 Gewichts% des Schichtmaterials, vorzugsweise jedoch bis zu 1 Gewichts% des zur Beschichtung verwendeten Kunstharzes, als auch durch geeignete Wahl der Länge der Fasern lassen sich die mechanischen und elektrischen Eigenschaften der leitfähigen Schicht reproduzierbar variieren.The fibers can either be added to the coating composition immediately during manufacture or the fibers can be subsequently incorporated into the already mixed coating compositions. The greater the length of the fibers compared to the layer thickness of the finished conductive layer, the greater the number of conductive bridges running through the synthetic resin layer. The mechanical and electrical properties of the conductive layer can be reproduced both by the amount of metal fibers added, for example up to 5% by weight of the layer material, but preferably up to 1% by weight of the synthetic resin used for coating, and by a suitable choice of the length of the fibers vary.
Bei Ausführungsformen der Erfindung bestehen die Metallfasern aus einem solchen metallischen z.B. elastischen Werkstoff, beispielsweise aus Stahl oder auch aus Bronze oder dgl., daß bei der Verarbeitung der Schicht und bei dem Einmischen des Fasermaterials in die Kunstharzmischung die Fasern nicht zerbrochen werden, sondern ihre Länge und auch, in gewissen Grenzen, ihre Form behalten so daß die elektrischen und mechanischen Eigenschaften der leitfähigen Schicht reproduzierbar sind, die einer bestimmten Faserlänge zugeschrieben werden.In embodiments of the invention, the metal fibers consist of such a metallic, for example, elastic material, for example of steel or of bronze or the like, that the fibers are not broken, but rather their length, when the layer is processed and the fiber material is mixed into the synthetic resin mixture and also, within certain limits, keep their shape so that the electrical ones and reproducible mechanical properties of the conductive layer, which are attributed to a certain fiber length.
Bei Ausführungsformen der Erfindung besteht der Werkstoff der Fasern aus Edelstahl. Dies hat den Vorteil, daß die Fasern weder mit dem Kunstharz noch mit einem auf der Oberfläche der leitfähigen Schicht sich ausbildenden Feuchtigkeitsfilm chemisch reagieren.In embodiments of the invention, the material of the fibers consists of stainless steel. This has the advantage that the fibers do not chemically react with the synthetic resin or with a moisture film that forms on the surface of the conductive layer.
Bei Ausführungsformen der Erfindung weisen die Fasern einer Schicht unterschiedliche Länge auf. Bei anderen Ausfühungsformen der Erfindung weisen alle Fasern der Schicht im wesentlichen die gleiche Länge auf. In diesem Falle sind die mechanischen und elektrischen Werte der leitfähigen Schicht besonders gut einstellbar.In embodiments of the invention, the fibers of a layer have different lengths. In other embodiments of the invention, all of the fibers of the layer are of substantially the same length. In this case, the mechanical and electrical values of the conductive layer can be set particularly well.
Bei Ausführungsformen der Erfindung beträgt die Dicke der Fasern bis zu 0,05 mm, vorzugsweise 0,01 mm und ihre Länge beträgt zwischen 1 mm und 1 cm, vorzugsweise 0,5 cm, bei einer anderen Ausführungsform 0,5 mm bis 10 mm, vorzugsweise 1 mm.In embodiments of the invention, the thickness of the fibers is up to 0.05 mm, preferably 0.01 mm and their length is between 1 mm and 1 cm, preferably 0.5 cm, in another embodiment 0.5 mm to 10 mm, preferably 1 mm.
Fasern aus einem chemisch inaktiven Werkstoff, beispielsweise Edelstahl oder dgl., haben den zusätzlichen Vorteil, daß der Widerstandswert der Schicht auch über längere Zeit hinweg konstant bleibt, weil die Fasern nicht korrodieren und mit ihrer Umgebung nicht chemisch reagieren.Fibers made of a chemically inactive material, for example stainless steel or the like, have the additional advantage that the resistance value of the layer remains constant even over a long period of time because the fibers do not corrode and do not react chemically with their surroundings.
In der Regel werden elektrostatisch ableitfähige Fußbodenbeschichtungen auf Basis von Epoxid-, Polyurethan-, Acrylat-oder ungesättigten Polyesterharzen in Form eines mehrschichtigen in der Zeichnung als Beispiel dargestellten Aufbaues verlegt:As a rule, electrostatically conductive floor coatings based on epoxy, polyurethane, acrylate or unsaturated polyester resins are laid in the form of a multi-layer structure shown in the drawing as an example:
Lösemittelfreie bzw. -arme Grundierung 1, um Einflüsse auf die Ableitfähigkeit durch Schwankungen des Feuchtegehalts des Substrates (Betondecke, - boden, Estrich usw.) weitgehend zu eliminieren.Solvent-free or low-
Horizontal ableitfähige Grundschicht 2; üblicherweise durch Spezial-Ruße und/oder Graphit elektrisch ableitfähig eingestellt. Diese Schicht kann lösungsmittelfrei oder -haltig sein. Mit geeigneten Vorrichtungen, z.B. durch Einbetten oder Verkleben von Kupferbändern, wird der Erdanschluß hergestellt.Horizontal
Deck- oder Nutzschicht 3, die je nach verwendetem Zusatz bis zu Schichtdicken von mehreren Millimetern aufgetragen wird. Sie ist vor allem vertikal ableitend, weist aber unter Umständen auch eine horizontale elektrische Ableitfähigkeit auf.Top or wear
Im folgenden werden einige Beispiele der Zusammensetzung von leitfähigen Schichten angegeben:Some examples of the composition of conductive layers are given below:
Für eine elektrosatische Ladungen horizontal ableitfähige Grundschicht in Form einer zweikomponenten Spachtelmasse zur Aufnahme von ebenfalls ableitfähigen Nutz- und Deckschichten gleicher Basis kann verwendet werden:
Harz-Komponente A:hochpigmentiertes, lösemittelfreies Epoxidharz auf Basis von Bisphenol A und/oder F.
Härter-Komp. B:in Wasser emulgierte, mit Füllstoffen und Quarzzuschlägen vermischte Polyamin- oder Polyaminoamid-Zubereitung mit 0,5 Gewichts% Stahlfaser mit 6 mm Länge
Mischungsverhältnis: Komp. A zu B 1:2 Gew.Teile
Aufzutragende Schichtdicke: 0,5 - 2 mm
Erdableiterwiderstand nach DIN 51953 : ca 10⁵ OhmFor elektrosatische charges horizontally dissipative base layer in the form of a two-component filler for Inclusion of conductive and top layers of the same base, which are also conductive, can be used:
Resin component A: highly pigmented, solvent-free epoxy resin based on bisphenol A and / or F.
Hardener Comp. B: Polyamine or polyaminoamide preparation emulsified in water, mixed with fillers and quartz aggregates, with 0.5% by weight steel fiber with a length of 6 mm
Mixing ratio: Comp. A to B 1: 2 parts by weight
Layer thickness to be applied: 0.5 - 2 mm
Earth conductor resistance according to DIN 51953: approx. 10⁵ ohms
Für eine elektrostatische Ladungen ableitfähige Nutz- und Deckschicht in Form einer zweikomponentigen Epoxidharz-Spachtelmasse kann verwendet werden:
Harz-Komponente A:siehe Beispiel 1
Härter-Komp. B:in Wasser emulgierte, mit Füllstoffen und Quarzzuschlägen vermischte Polyamin- oder Polyaminoamid-Zubereitung mit 1 Gew.% Stahlfaser mit 1 mm Länge
Mischungsverhältnis: Kompo. A zu B wie Beispiel 1
Aufzutragende Schichtdicke: max. 0,5 mm
Erdableiterwiderstand nach DIN 51953 : ca 10⁷ OhmFor an electrostatic charge conductive top and top layer in the form of a two-component epoxy filler can be used:
Resin component A: see example 1
Hardener Comp. B: Polyamine or polyaminoamide preparation emulsified in water, mixed with fillers and quartz aggregates, with 1% by weight steel fiber with a length of 1 mm
Mixing ratio: compo. A to B as example 1
Layer thickness to be applied: max. 0.5 mm
Earth conductor resistance according to DIN 51953: approx. 10⁷ ohms
Für eine elektrostatische Ladungen ableitfähige Nutz- und Deckschicht in Form einer lösemittelfreien, selbstverlaufenden zweikomponentigen Epoxidbeschichtung kann verwendet werden:
Harz-Komp. A: niedrig pigmentiertes, lösemittelfreies Epoxidharz auf Basis Bisphenol A und/oder F, modifiziert mit einer Viskosität von ca. 1.000m Pa-s/20 °C mit 1 Gew.% Stahlfaser mit einer Länge von 1 mm.
Härter-Komp. B: modifiziertes cycloaliphatisches Polyaminaddukt
Mischungsverhältnis: Komp. A zu B 2 : 1 Gew. Teile
Aufzutragende Schichtdicke: 0,5 - 1,5 mm, auf eine ausreichend horizontal ableitfähige Grundschicht (z. B. Grundschicht gemäß Beispiel 1).
Erdableitwiderstand nach DIN 51 953: ca. 10⁶ OhmFor an electrostatic charge conductive top and top layer in the form of a solvent-free, self-leveling two-component epoxy coating can be used:
Resin comp. A: Low pigmented, solvent free epoxy resin based on bisphenol A and / or F, modified with a viscosity of approx.1,000m Pa-s / 20 ° C with 1% by weight steel fiber with a length of 1 mm.
Hardener Comp. B: Modified cycloaliphatic polyamine adduct
Mixing ratio: Comp. A to B 2: 1 parts by weight
Layer thickness to be applied: 0.5 - 1.5 mm, on a sufficiently horizontally conductive base layer (e.g. base layer according to Example 1).
Earth leakage resistance according to DIN 51 953: approx. 10⁶ ohms
Die Mengen der beigemischten Metallfasern können bei Ausführungsformen der Erfindung bis zu 5 Gew.% der Harzmenge betragen.The amounts of the added metal fibers can be up to 5% by weight of the amount of resin in embodiments of the invention.
Wesentlich ist, daß die Länge der Fasern groß gegen ihren Durchmesser ist, z. B. 100 mal größer als ihre Dicke.It is essential that the length of the fibers is large compared to their diameter, e.g. B. 100 times larger than its thickness.
Claims (9)
- A conductive floor covering comprising a layer of synthetic resin containing metal particles, characterized in that the metal particles take the form of metal fibers having a thickness of up to 0,05 mm and having a length of between 0,5 and 10 mm, the part of fibers being up to 5 % by weight.
- The floor covering of claim 1, characterized in that the fibers have a thickness of up to 0,01 mm.
- The floor covering of claim 1 or 2, characterized in that the length of the fibers is greater than the thickness of the layer.
- The floor covering of any of claims 1 through 3, characterized in that the fibers have a length of 1 mm.
- The floor covering of claim 1, characterized in that the metal fibers are elastic.
- The floor covering of claim 1 or 2, characterized in that the fibers consist of stainless steel.
- The floor covering of any of the preceding claims, characterized in that all the fibers of the floor covering has substantially the same length.
- The floor covering of any of claims 1 through 6, characterized in that the fibers have differing lengths.
- The floor covering of any of the preceding claims, characterized in that the layer contains a part of fibers of less than 1 % by weight, of the resin-and-hardener mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87116835T ATE68022T1 (en) | 1986-11-21 | 1987-11-14 | CONDUCTIVE FLOORING. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3639816 | 1986-11-21 | ||
| DE19863639816 DE3639816A1 (en) | 1986-11-21 | 1986-11-21 | CONDUCTIVE FLOORING |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0269934A1 EP0269934A1 (en) | 1988-06-08 |
| EP0269934B1 true EP0269934B1 (en) | 1991-10-02 |
Family
ID=6314466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87116835A Expired - Lifetime EP0269934B1 (en) | 1986-11-21 | 1987-11-14 | Conductive floor covering |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0269934B1 (en) |
| JP (1) | JPS63145490A (en) |
| AT (1) | ATE68022T1 (en) |
| DE (1) | DE3639816A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1770106A2 (en) | 2005-09-29 | 2007-04-04 | INEOS Melamines GmbH | Modified aminoplast resin solution |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5501899A (en) * | 1994-05-20 | 1996-03-26 | Larkin; William J. | Static eliminator and method |
| DE10008810C2 (en) * | 2000-02-25 | 2003-02-27 | Murjahn Amphibolin Werke | Dissipative floor coating system |
| DE10232874B4 (en) * | 2002-07-19 | 2010-01-28 | Ghp Glunz Holzwerkstoffproduktions-Gmbh | Plate and method of making a plate |
| DE10259441B4 (en) * | 2002-12-19 | 2011-03-17 | Remmers Baustofftechnik Gmbh | Floor coating system, in particular for ESD requirements |
| DE10261515B4 (en) * | 2002-12-23 | 2010-03-25 | Remmers Baustofftechnik Gmbh | Floor coating system, in particular for ESD requirements |
| DE10300459A1 (en) * | 2003-01-07 | 2004-07-22 | Sgl Acotec Gmbh | Electrically conductive floor coatings |
| DE10301770B4 (en) | 2003-01-18 | 2006-03-16 | Hornitex Werke Gebr. Künnemeyer GmbH & Co. KG | Coating for plates and method for coating a plate |
| DE102007012651A1 (en) | 2007-03-16 | 2008-09-18 | Johns Manville Europe Gmbh | Manufacturing composite material, useful as construction material e.g. furniture, comprises supplying carrier, applying textile surface structure onto surface of carrier, laminating construction, and optionally applying protective layer |
| DE102009023737A1 (en) | 2009-06-03 | 2010-12-09 | Johns Manville Europe Gmbh | Composite material useful as construction material to manufacture furniture and wall, ceiling and floor coverings, comprises carrier, and textile surface structure, which is laminated on one of the two sides of the carrier and has binder |
| US20100310838A1 (en) | 2009-06-03 | 2010-12-09 | Michael Ketzer | Printing of non-woven fabrics and their use in composite materials |
| EP2431173A1 (en) | 2010-09-21 | 2012-03-21 | FunderMax GmbH | Fire-resistant laminate |
| WO2013120719A1 (en) * | 2012-02-17 | 2013-08-22 | Construction Research & Technology Gmbh | Antistatic flooring composition |
| EP2755451A1 (en) * | 2013-01-09 | 2014-07-16 | Sika Technology AG | Coating system with protection against electrostatic discharge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1172571A (en) * | 1956-01-18 | 1959-02-12 | Armour Res Found | Metal-plastic complexes and manufacturing processes |
| DE1790224C3 (en) * | 1965-05-12 | 1975-09-18 | Kurt Gaiser | Method for increasing the electrical conductivity of plastic floor coverings and device for carrying out the method |
| DE2026727A1 (en) * | 1970-06-01 | 1971-12-16 | Gerro Holding Co Ltd, Vaduz | Antistatic textile floor or wall coverings contg electrically - conductive particles in the impregnating or finishing compns |
-
1986
- 1986-11-21 DE DE19863639816 patent/DE3639816A1/en active Granted
-
1987
- 1987-11-14 EP EP87116835A patent/EP0269934B1/en not_active Expired - Lifetime
- 1987-11-14 AT AT87116835T patent/ATE68022T1/en not_active IP Right Cessation
- 1987-11-20 JP JP62294978A patent/JPS63145490A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1770106A2 (en) | 2005-09-29 | 2007-04-04 | INEOS Melamines GmbH | Modified aminoplast resin solution |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3639816A1 (en) | 1988-06-09 |
| ATE68022T1 (en) | 1991-10-15 |
| JPS63145490A (en) | 1988-06-17 |
| DE3639816C2 (en) | 1989-03-30 |
| EP0269934A1 (en) | 1988-06-08 |
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