EP0269934B1 - Leitfähiger Fussbodenbelag - Google Patents

Leitfähiger Fussbodenbelag Download PDF

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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
Authority
EP
European Patent Office
Prior art keywords
fibers
layer
floor covering
conductive
length
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 - Lifetime
Application number
EP87116835A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0269934A1 (de
Inventor
Joachim Zeh
Hans-Georg Fürdens
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.)
Chemotechnik Abstatt GmbH
Original Assignee
Chemotechnik Abstatt GmbH
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 Chemotechnik Abstatt GmbH filed Critical Chemotechnik Abstatt GmbH
Priority to AT87116835T priority Critical patent/ATE68022T1/de
Publication of EP0269934A1 publication Critical patent/EP0269934A1/de
Application granted granted Critical
Publication of EP0269934B1 publication Critical patent/EP0269934B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Reinforced Plastic Materials (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Floor Finish (AREA)
  • Paints Or Removers (AREA)
EP87116835A 1986-11-21 1987-11-14 Leitfähiger Fussbodenbelag Expired - Lifetime EP0269934B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116835T ATE68022T1 (de) 1986-11-21 1987-11-14 Leitfaehiger fussbodenbelag.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863639816 DE3639816A1 (de) 1986-11-21 1986-11-21 Leitfaehiger fussbodenbelag
DE3639816 1986-11-21

Publications (2)

Publication Number Publication Date
EP0269934A1 EP0269934A1 (de) 1988-06-08
EP0269934B1 true EP0269934B1 (de) 1991-10-02

Family

ID=6314466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116835A Expired - Lifetime EP0269934B1 (de) 1986-11-21 1987-11-14 Leitfähiger Fussbodenbelag

Country Status (4)

Country Link
EP (1) EP0269934B1 (ja)
JP (1) JPS63145490A (ja)
AT (1) ATE68022T1 (ja)
DE (1) DE3639816A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501899A (en) * 1994-05-20 1996-03-26 Larkin; William J. Static eliminator and method
DE10008810C2 (de) * 2000-02-25 2003-02-27 Murjahn Amphibolin Werke Ableitfähiges Bodenbeschichtungssystem
DE10232874B4 (de) * 2002-07-19 2010-01-28 Ghp Glunz Holzwerkstoffproduktions-Gmbh Platte und Verfahren zur Herstellung einer Platte
DE10259441B4 (de) * 2002-12-19 2011-03-17 Remmers Baustofftechnik Gmbh Bodenbeschichtungssystem, insbesondere für ESD-Anforderungen
DE10261515B4 (de) * 2002-12-23 2010-03-25 Remmers Baustofftechnik Gmbh Bodenbeschichtungssystem, insbesondere für ESD-Anforderungen
DE10300459A1 (de) * 2003-01-07 2004-07-22 Sgl Acotec Gmbh Elektrisch leitfähige Bodenbeschichtungen
DE10301770B4 (de) 2003-01-18 2006-03-16 Hornitex Werke Gebr. Künnemeyer GmbH & Co. KG Beschichtung für Platten und Verfahren zur Beschichtung einer Platte
DE102007012651A1 (de) 2007-03-16 2008-09-18 Johns Manville Europe Gmbh Direkt-dekorierbare Verbundwerkstoffe, Verfahren zu deren Herstellung und deren Verwendung
DE102009023737A1 (de) 2009-06-03 2010-12-09 Johns Manville Europe Gmbh Digitales Bedrucken von Vliesstoffen und deren Verwendung in Verbundwerkstoffen
US20100310838A1 (en) 2009-06-03 2010-12-09 Michael Ketzer Printing of non-woven fabrics and their use in composite materials
EP2431173A1 (de) 2010-09-21 2012-03-21 FunderMax GmbH Feuerfestes Laminat
WO2013120719A1 (en) * 2012-02-17 2013-08-22 Construction Research & Technology Gmbh Antistatic flooring composition
EP2755451A1 (de) * 2013-01-09 2014-07-16 Sika Technology AG Beschichtungssystem mit Schutz vor elektrostatischer Entladung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1172571A (fr) * 1956-01-18 1959-02-12 Armour Res Found Complexes métal-plastique et procédés de fabrication
DE1790224C3 (de) * 1965-05-12 1975-09-18 Kurt Gaiser Verfahren zum Erhöhen der elektrischen Leitfähigkeit von Kunststoff-Fußbodenbelägen und Vorrichtung zur Durchführung des Verfahrens
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

Cited By (1)

* Cited by examiner, † Cited by third party
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
EP0269934A1 (de) 1988-06-08
ATE68022T1 (de) 1991-10-15
DE3639816C2 (ja) 1989-03-30
JPS63145490A (ja) 1988-06-17
DE3639816A1 (de) 1988-06-09

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