JPS5517236A - Manufacturing method of mica plate for commutator segment - Google Patents

Manufacturing method of mica plate for commutator segment

Info

Publication number
JPS5517236A
JPS5517236A JP8858378A JP8858378A JPS5517236A JP S5517236 A JPS5517236 A JP S5517236A JP 8858378 A JP8858378 A JP 8858378A JP 8858378 A JP8858378 A JP 8858378A JP S5517236 A JPS5517236 A JP S5517236A
Authority
JP
Japan
Prior art keywords
epoxy resin
mica sheet
mica
commutator segment
urethane
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
Application number
JP8858378A
Other languages
Japanese (ja)
Inventor
Tatsuo Kitagawa
Osamu Fujisawa
Hiroshi Ono
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8858378A priority Critical patent/JPS5517236A/en
Publication of JPS5517236A publication Critical patent/JPS5517236A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

PURPOSE: To prevent an occurence of high bar phenomenon with a highsoluble capability of the resin heightened to mica, by making a mica plate with a surface active agent added to an urethane naturalized epoxy resin to impregnate to a mica sheet, and heating and press-forming processed.
CONSTITUTION: An ion surface active agent, preferably 0.5∼2.0wt.%, is added to an urethane naturalized epoxy resin to be impregnated to mica sheet, after constructing a prepreg mica sheet, it is laminated to a prescribed quantity, heated and press-formed to prepare a mica sheet used for commutator segment. In this way, the soluble capability of the epoxy resin to the mica sheet can be improved and simultanesouly a wet property to the commutator segment is improved by utilizing the urethane denaturalized epoxy resin as an epoxy resin to improve a mechanical peoperty, with a mica sheet obtainable having no trouble of occurence of the high bar phenomenon.
COPYRIGHT: (C)1980,JPO&Japio
JP8858378A 1978-07-19 1978-07-19 Manufacturing method of mica plate for commutator segment Pending JPS5517236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8858378A JPS5517236A (en) 1978-07-19 1978-07-19 Manufacturing method of mica plate for commutator segment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8858378A JPS5517236A (en) 1978-07-19 1978-07-19 Manufacturing method of mica plate for commutator segment

Publications (1)

Publication Number Publication Date
JPS5517236A true JPS5517236A (en) 1980-02-06

Family

ID=13946858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8858378A Pending JPS5517236A (en) 1978-07-19 1978-07-19 Manufacturing method of mica plate for commutator segment

Country Status (1)

Country Link
JP (1) JPS5517236A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03160185A (en) * 1989-11-02 1991-07-10 Alcatel Cit positive displacement vacuum pump
US6620510B1 (en) 1998-12-25 2003-09-16 Mitsubishi Rayon Co., Ltd. Epoxy resin composition, prepreg, and roll made of resin reinforced with reinforcing fibers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03160185A (en) * 1989-11-02 1991-07-10 Alcatel Cit positive displacement vacuum pump
US6620510B1 (en) 1998-12-25 2003-09-16 Mitsubishi Rayon Co., Ltd. Epoxy resin composition, prepreg, and roll made of resin reinforced with reinforcing fibers

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