US3752751A - Process for forming an electrically conductive coating on a nonmetallic filament - Google Patents

Process for forming an electrically conductive coating on a nonmetallic filament Download PDF

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Publication number
US3752751A
US3752751A US00104855A US3752751DA US3752751A US 3752751 A US3752751 A US 3752751A US 00104855 A US00104855 A US 00104855A US 3752751D A US3752751D A US 3752751DA US 3752751 A US3752751 A US 3752751A
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electrically conductive
filament
electro
nonmetallic
coating
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US00104855A
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M Hirose
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process

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  • ABSTRACT OF THE DISCLOSURE A process for forming an electrically conductive coating on the surface of a nonmetallic filament, characterized in that said nonmetallic filament is carried by electrically conductive members and placed in an electro-depositing coating material comprising electrically conductive particles dispersed in a resinuous carrier with a concentration of -25%, preferably 18-20% by weight, said conductive members which serve as one electrode and the other electrode located in said electro-depositing coating material being electrified with a DC. voltage, thereby forming a coating of a uniform and desired thickness on the surface of said nonmetallic filament.
  • an electric conductor employing a nonmetallic filament as a carrier or base and having a desired electric resistance can be easily and surely obtained by controlling the DC. voltage, current density or electrifying period for electro-deposition, employing simple and economical electro-depositing coating devices.
  • This invention relates to a process for forming an electrically conductive coating on nonmetallic filaments.
  • the coating by electro-deposition means as its general definition, applying a coating to the surface of an electric conductor taking advantage of the polarization of the coating material within an electric field.
  • the electric conductivity of said electrically conductive coating material as well as the adhesive property thereof to the surface of nonmetallic filaments is taken advantage of, and a coating by electro-deposition is applied to an organic or inorganic filament which is a nonmetallic substance, by placing an electrode on the filament itself.
  • the primary gist of the present invention lies in a process for forming an electrically conductive coating on the surface of a nonmetallic filament, characterized in that said nonmetallic filament is supported by electrically conductive members and is placed in an electro-depositing coating material comprising electrically conductive particles dispersed in a resinous carrier with a concentration of 15-25%, preferably 18-20% by weight, said conductive members which serve as one electrode and the other electrode located in said electro-depositing coating material being electrified with a DC voltage, thereby forming a coating of a uniform and desired thickness on the surface of said nonmetallic filament, said electrically conductive particles being selected from the group consisting of a magnetic metal, metallic oxide, metallic silicate and nonmetallic particles and being employed alone except a metal or in combination, said resinous carrier including a synthetic resin having high-frequency dielectric constant.
  • FIG. 1 is a diagrammatic elevation view of a fixed type electro-depositing coating device which is one embodiment of this invention, partly shown in cross section;
  • FIG. 2 is a diagrammatic elevation view of a continuous type electro-depositing coating device which is another embodiment of this invention, partly shown in cross section;
  • FIG. 3 is a circuit diagram of a continuous proportional control unit which is an electric source for the device shown in FIG. 2.
  • numeral 1 designates a piece of nonmetallic filament made of synthetic fibre, for example, glass fibre, acrylonitrile fibre, polyester type fiber, nylon-type fibre etc. by intertwisting six strands of 1000 denier to form one filament. Said nonmetallic filament is carried by metal clips 2.
  • Numeral 3 is a carbon electrode, 4 and 5 are electric terminals, 6 is an agitator, 7 is an electrO-depositing coating material and 8 is a glass container.
  • FIG. 2 there is illustrated a continuous type electro-depositing coating device.
  • Numeral 1 is a piece of nonmetallic filament of the same material as above-mentioned, and 9 is a guide pulley.
  • Numerals 10 and 11 are pulleys which are made of composition of graphite and phenol resin and serve as electrically conductive means.
  • Numerals 12 and 13 are guide pulleys for the coated nonmetallic filament.
  • Letters X and Y designate pulleys for an electric conduction test which are adapted to measure the electric resistance of the electric conductor and are connected to terminals of a continuous proportional control unit shown in FIG. 3.
  • Number 3 is a carbon electrode
  • 4 and 5 are electric terminals
  • 8 is a glass container
  • 14 is a ner.
  • EXAMPLE 1 The electro-depositing coating device shown in FIG. 1 was operated by a DC voltage generated from the control unit shown in FIG. 3. A piece of glass filament yarn 1 was carried by the clips 2 and electric voltage was applied to the terminals 4 and 5 respectively.
  • the coating material consisting of 50 parts of water soluble phenol resin, 200 parts of pure water and 100 parts of mixture of Fe, Fe O Fe O and FeO-Si0 mixed in amounts of 5%, 5%, and 10% by weight, respectively and having a particle size passable through a sieve of 400-450 meshes
  • the electro-deposition was attained by applying DC 30 v. of electric voltage to the terminals 4 and 5 and by electrifying with about 270 ma. of electric current for 5 minutes.
  • linear electro-conductive magnetic substance showed an electric resistance of 30 Mal/100 mm. It was magnetized when a magnet was drawn near and demagnetized the instant the magnet was withdrawn.
  • EXAMPLE 2 The continuous type electro-depositing coating device shown in FIG. 2 was operated to obtain an electrodeposited coating continuously on a piece of glass filament yarn.
  • the reeled-off filament yarn 1 was introduced through the guide pulley 9 and electro-deposited through the pulleys 10 and 11.
  • the anode was set on said pulleys 10 and 11, while the cathode was set on the carbon electrode 3.
  • the electro-deposited filament yarn 1 was dried and stiffened by the drier 14 while passing through the guide pullley 12 and 13.
  • the electric resistance was measured in the course of transfer at the points of X and Y, and the electrodepositing voltage was controlled by the continuous proportional control unit to uniformalize the electric resistance of the electric conductor obtained.
  • the accomplished filament yarn may be further covered with a protective coating by an ordinary skill in the art or may be utilized, as it is, as an electric conductor.
  • the coating material employed in this example consisted of 50 parts of Water soluble melamine resin, 100 parts of mixture of Fe, Fe O Fe O and iFeO-SiO mixed in the same amounts as in Example 1 and 200 parts of pure water.
  • the electric voltage was DC 70 v.
  • the electric current was 900 ma.
  • the haul-oft speed of the glass filament yarn was 10 mm./sec.
  • the thus obtained linear electro-conductive magnetic substance showed an electric resistance of 20 MSZ/ 100' mm. and was magnetized in the same manner as in the former example.
  • EXAMPLE 3 In the same manner as described in Example 1, electrodeposition was attained in the coating material of 20 parts of water soluble phenol resin, 200 parts of pure water and 50 parts of carbon particles by applying DC 30 v. and 350 ma. for 3 minutes.
  • the electric resistance of the obtained linear electroconductive filament was 1000 100 mm.
  • EXAMPLE 4 In the same manner as described in Example 2, electrodeposition was attained in the coating material of 50 parts of water soluble urea resin, 100 parts of graphite particles and 200 parts of pure water by applying DC 60 v. and 950 ma. at a haul-off speed of 10 mm./ sec.
  • the electric resistance of the obtained linear electric conductor was 1.2 K 0/100 mm.
  • EXAMPLE 5 In the same manner as described in Example 1, electro-deposition was attained in the coating material of 50 parts of water soluble phenol resin, 200 parts of pure water, 90 parts of mixture of Fe O Fe O FeO-SiO Bao and 2110 mixed in amounts of 5%, 82%, 5%, 3% and 5% by weight, respectively and having the same particle size as in Example 1, and parts of carbon by applying DC 20 v. and 350 ma. for 4 minutes.
  • the obtained linear electric conductor showed an electric resistance of 7 K 52/100 mm. and proved to be a magnetic substance.
  • EXAMPLE 6 In the same manner as described in Example 2, electroeposition was a tained in the coating material of 30 parts of water soluble phenol resin, 10 parts of water soluble melamine resin, 50 parts of mixture of Fe, Fe O Fe O and FeO-Si0 mixed in amount of 5%, 8%, 77% and 10% by weight, respectively and having the same particle size as in Example 1, 10 parts of carbon, 10 parts of graphite and 200 parts of pure water by applying DC 65 v. and 1100 ma. at a haul-off speed of 10 mm./sec.
  • the obtained linear electric conductor showed an electric resistance of 1.2 k. 52/100 mm. and proved to be a magnetic substance.
  • the process according to the present invention has such notable features that an electric conductor of non-metallic filament having a desired resistance can be easily and surely obtained by controlling DC voltage voltage, electric current density or electrifying period for electrodeposition.
  • a process for forming an electrically conductive coating on the surface of a nonmetallic substrate which initially is nonconductive which comprises the steps of:
  • said electrically conductive members are metal clips submerged in said bath and to which said filament is attached so as to be stationary in said bath, said metal clips and said electrode being electrified with DC potential for a predetermined period to form an electrically conductive coating on the stationary filament.
  • said electrically conductive members are electrically conductive pulleys for carrying and moving the filament, said pulleys and said electrode being continuously electrified with DC potential, thereby forming an electrically conductive coating on said nonmetallic filament during the course of movement thereof by the pulleys at a predetermined speed.
  • said electrically conductive particles consist of a conductive material selected from the group consisting of magnetic metal, metallic oxide, metallic silicate, nonmetallic conductive particles and mixtures thereof.
  • R f n s Cited resin is selected from the group consisting of phenol resin, melamine resin, urea resin and mixtures thereof, UNITED STATES PATENTS and in which said electrically conductive particles are 03 5/1955 Dorst 204-181 selected from the group consisting of Fe, Fe O Fe O 5 2,898,279 8/1959 Metcalfe et a1. 204--181 FeO-SiO carbon, graphite, BaO, ZnO and mixtures thereof.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Woven Fabrics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
US00104855A 1970-03-20 1971-01-08 Process for forming an electrically conductive coating on a nonmetallic filament Expired - Lifetime US3752751A (en)

Applications Claiming Priority (1)

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JP45023389A JPS5013307B1 (enrdf_load_stackoverflow) 1970-03-20 1970-03-20

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US3752751A true US3752751A (en) 1973-08-14

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US (1) US3752751A (enrdf_load_stackoverflow)
JP (1) JPS5013307B1 (enrdf_load_stackoverflow)
DE (1) DE2101054C3 (enrdf_load_stackoverflow)
FR (1) FR2083439B1 (enrdf_load_stackoverflow)
GB (1) GB1336023A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844784A (en) * 1984-12-20 1989-07-04 Shinto Paint Co., Ltd. Flexible cicuit substrate with electroconductive adhesive layer and its production
US5070606A (en) * 1988-07-25 1991-12-10 Minnesota Mining And Manufacturing Company Method for producing a sheet member containing at least one enclosed channel
USRE34651E (en) * 1988-02-19 1994-06-28 Minnesota Mining And Manufacturing Company Sheet-member containing a plurality of elongated enclosed electrodeposited channels and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655275B2 (fr) * 1989-03-14 1992-02-21 Pechiney Recherche Perfectionnement au procede de fabrication d'un tube poreux revetu interieurement d'une membrane semi-permeable par electrophorese.
FR2644361B1 (fr) * 1989-03-14 1991-05-24 Pechiney Rech Gie Procede de fabrication d'une membrane semi-permeable sur un support conducteur poreux par electrophorese
DE19520458A1 (de) * 1995-06-03 1996-12-05 Forschungszentrum Juelich Gmbh Vorrichtung zur elektrophoretischen Beschichtung von Substraten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558297A (enrdf_load_stackoverflow) * 1956-06-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844784A (en) * 1984-12-20 1989-07-04 Shinto Paint Co., Ltd. Flexible cicuit substrate with electroconductive adhesive layer and its production
USRE34651E (en) * 1988-02-19 1994-06-28 Minnesota Mining And Manufacturing Company Sheet-member containing a plurality of elongated enclosed electrodeposited channels and method
US5070606A (en) * 1988-07-25 1991-12-10 Minnesota Mining And Manufacturing Company Method for producing a sheet member containing at least one enclosed channel

Also Published As

Publication number Publication date
FR2083439A1 (enrdf_load_stackoverflow) 1971-12-17
DE2101054A1 (de) 1971-09-30
FR2083439B1 (enrdf_load_stackoverflow) 1973-12-07
GB1336023A (en) 1973-11-07
JPS5013307B1 (enrdf_load_stackoverflow) 1975-05-19
DE2101054C3 (de) 1979-01-04
DE2101054B2 (de) 1978-03-30

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