EP0223355A1 - Verfahren zur Erzeugung eines druckempfindlichen leitfähigen Verbundelastomers - Google Patents

Verfahren zur Erzeugung eines druckempfindlichen leitfähigen Verbundelastomers Download PDF

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Publication number
EP0223355A1
EP0223355A1 EP86307049A EP86307049A EP0223355A1 EP 0223355 A1 EP0223355 A1 EP 0223355A1 EP 86307049 A EP86307049 A EP 86307049A EP 86307049 A EP86307049 A EP 86307049A EP 0223355 A1 EP0223355 A1 EP 0223355A1
Authority
EP
European Patent Office
Prior art keywords
particles
compound
pressure
conductive
carbonized
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.)
Granted
Application number
EP86307049A
Other languages
English (en)
French (fr)
Other versions
EP0223355B1 (de
Inventor
Mitsuo Takaya
Kiyotaka Inoue
Katsumi Higuchi
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.)
Nitta Corp
Original Assignee
Nitta Corp
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 Nitta Corp filed Critical Nitta Corp
Publication of EP0223355A1 publication Critical patent/EP0223355A1/de
Application granted granted Critical
Publication of EP0223355B1 publication Critical patent/EP0223355B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
    • H01C10/106—Adjustable resistors adjustable by mechanical pressure or force on resistive material dispersed in an elastic material
    • 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

Definitions

  • suspension polymerization means a process wherein a polymerization catalyst is added to monomers, the mixture being stirred in water with a dispersant added to allow the monomers to disperse in oil-drop form and then being polymerized.
  • Figs. 1a, 1b and 1c are schematic views showing a few examples of spherical carbonized particles used for the purpose of the invention. Particles of various grades of conductivity are shown as they are formed from non-conductive spherical particles of a macromolecular material. Experiments have revealed that the electric conductivity of the particles varies according to the heating and baking conditions. This is considered to be attributable to the following facts. If, as in Fig. la, only a region around the outer periphery of a particle 1 is carbonized to a thickness (t) in a spherical shell pattern, the conductivity of the particle 1 is low because the carbonized portion 2, i.e.
  • the degree of carbonization of the particles 1 is adjustable by changes in baking conditions, such as heating termperature and time. Therefore, by baking and carbonizing preselected particles 1 of a specified diameter under preset baking conditions it is possible to obtain quite easily, particles 1 having the required conductivity.
  • the compound was moulded by press-moulding into a sheet having a thickness of 0.5 mm. Pressure was applied to the sheet surface by a rod-like pressing electrode having a 5 mm diameter, and the relationships between the pressing force and the resistance were measured. The measurements, as shown in Fig. 2, revealed satisfactory resistance variation characteristics, with only a small degree of hysteresis.
  • the spherical phenolic resin particles were produced in the following way. A resol resin was dissolved in acetone, and a precipitant was added to the mixture during stirring, so that fine spherical resin particles were separated out. The particles were then subjected to filtration and drying and subsequently heated and hardened.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Conductive Materials (AREA)
  • Adjustable Resistors (AREA)
EP86307049A 1985-11-11 1986-09-12 Verfahren zur Erzeugung eines druckempfindlichen leitfähigen Verbundelastomers Expired EP0223355B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60253525A JPS62112641A (ja) 1985-11-11 1985-11-11 感圧導電性エラストマ−組成物
JP253525/85 1985-11-11

Publications (2)

Publication Number Publication Date
EP0223355A1 true EP0223355A1 (de) 1987-05-27
EP0223355B1 EP0223355B1 (de) 1989-10-11

Family

ID=17252578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86307049A Expired EP0223355B1 (de) 1985-11-11 1986-09-12 Verfahren zur Erzeugung eines druckempfindlichen leitfähigen Verbundelastomers

Country Status (4)

Country Link
EP (1) EP0223355B1 (de)
JP (1) JPS62112641A (de)
DE (1) DE3666304D1 (de)
MY (1) MY100739A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399295A3 (de) * 1989-05-24 1991-03-20 Preh-Werke GmbH & Co. KG Zur Erzeugung elektrischer Widerstandsschichten geeignete Widerstandspaste und aus ihr hergestellte Widerstandsschicht
WO1991010240A1 (de) * 1989-12-23 1991-07-11 Robert Bosch Gmbh Verfahren zum herstellen einer abriebfesten schicht
US5989700A (en) * 1996-01-05 1999-11-23 Tekscan Incorporated Pressure sensitive ink means, and methods of use
US6964205B2 (en) 2003-12-30 2005-11-15 Tekscan Incorporated Sensor with plurality of sensor elements arranged with respect to a substrate
US7785704B2 (en) 2003-05-14 2010-08-31 Tekscan, Inc. High temperature pressure sensitive devices and methods thereof
CN111732836A (zh) * 2020-06-17 2020-10-02 东南大学 一种用于高速铁路无砟轨道板健康状况实时监测的传感器材料及其制备方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR725601A0 (en) 2001-08-24 2001-09-20 Commonwealth Scientific And Industrial Research Organisation Strain gauges
US6993954B1 (en) 2004-07-27 2006-02-07 Tekscan, Incorporated Sensor equilibration and calibration system and method
JP5577022B2 (ja) * 2008-01-24 2014-08-20 東海ゴム工業株式会社 センサ用複合材料および変形センサ
JP2009198483A (ja) * 2008-01-24 2009-09-03 Tokai Rubber Ind Ltd センサ薄膜、その製造方法、および変形センサ
JP2009198482A (ja) * 2008-01-24 2009-09-03 Tokai Rubber Ind Ltd センサ薄膜、その製造方法、および変形センサ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450856A1 (fr) * 1979-03-09 1980-10-03 Toray Silicone Co Compositions d'organopolysiloxane liquides vulcanisables conductrices de l'electricite
FR2537984A1 (fr) * 1982-12-16 1984-06-22 Denki Kagaku Kogyo Kk Noir de carbone electriquement conducteur et composition electriquement conductrice contenant ce noir, et procede pour la preparation de ce noir

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011215A (ja) * 1983-06-30 1985-01-21 Agency Of Ind Science & Technol 高導電性炭素系焼成物及びその組成物

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450856A1 (fr) * 1979-03-09 1980-10-03 Toray Silicone Co Compositions d'organopolysiloxane liquides vulcanisables conductrices de l'electricite
FR2537984A1 (fr) * 1982-12-16 1984-06-22 Denki Kagaku Kogyo Kk Noir de carbone electriquement conducteur et composition electriquement conductrice contenant ce noir, et procede pour la preparation de ce noir

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399295A3 (de) * 1989-05-24 1991-03-20 Preh-Werke GmbH & Co. KG Zur Erzeugung elektrischer Widerstandsschichten geeignete Widerstandspaste und aus ihr hergestellte Widerstandsschicht
US5219494A (en) * 1989-05-24 1993-06-15 Preh-Werke Gmbh & Co. Kg Resistor paste composition and resistor layers produced therefrom
WO1991010240A1 (de) * 1989-12-23 1991-07-11 Robert Bosch Gmbh Verfahren zum herstellen einer abriebfesten schicht
US5989700A (en) * 1996-01-05 1999-11-23 Tekscan Incorporated Pressure sensitive ink means, and methods of use
US7785704B2 (en) 2003-05-14 2010-08-31 Tekscan, Inc. High temperature pressure sensitive devices and methods thereof
US6964205B2 (en) 2003-12-30 2005-11-15 Tekscan Incorporated Sensor with plurality of sensor elements arranged with respect to a substrate
CN111732836A (zh) * 2020-06-17 2020-10-02 东南大学 一种用于高速铁路无砟轨道板健康状况实时监测的传感器材料及其制备方法

Also Published As

Publication number Publication date
JPS62112641A (ja) 1987-05-23
MY100739A (en) 1991-01-31
DE3666304D1 (en) 1989-11-16
EP0223355B1 (de) 1989-10-11

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