JPS57135834A - Production of heat-resistant prepreg - Google Patents

Production of heat-resistant prepreg

Info

Publication number
JPS57135834A
JPS57135834A JP56021164A JP2116481A JPS57135834A JP S57135834 A JPS57135834 A JP S57135834A JP 56021164 A JP56021164 A JP 56021164A JP 2116481 A JP2116481 A JP 2116481A JP S57135834 A JPS57135834 A JP S57135834A
Authority
JP
Japan
Prior art keywords
resin
substrate
isocyanate
epoxy resin
impregnated
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
JP56021164A
Other languages
Japanese (ja)
Other versions
JPS6234252B2 (en
Inventor
Hiroyuki Nakajima
Shohei Eto
Norimoto Moriwaki
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 JP56021164A priority Critical patent/JPS57135834A/en
Publication of JPS57135834A publication Critical patent/JPS57135834A/en
Publication of JPS6234252B2 publication Critical patent/JPS6234252B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Reinforced Plastic Materials (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Epoxy Resins (AREA)
  • Insulating Of Coils (AREA)
  • Organic Insulating Materials (AREA)
  • Insulating Bodies (AREA)

Abstract

PURPOSE: To produce a prepreg which is flexible in a semi-cured state and has excellent heat resistance, by impregnating a specified substrate with a resin compsn. obtd. by reacting an isocyanate-modified epoxy resin with an unsaturated monobasic acid, and then irradiating the impregnated substrate with a light beam to form a B-staged resin.
CONSTITUTION: One eq. of an isocyanate compd. such as 2,4-tolylene diisocyanate is reacted with 1.2W10eq. of an epoxy resin in the presence of a hetero ring- forming catalyst such as AlCl3. One eq. of the resulting isocyanate-modified epoxy resin is reacted with 0.1W0.8eq. of an unsaturated monobasic acid such as acrylic acid to obtain a resin compsn. Then a substrate obtd. by mixing a polyamide fiber with 1W50wt% high-molecular fibrid, dispersing the mixture in water to make a nonwoven fabric, and drying the fabric at 50W100°C, is impregnated with said resin compsn. The impregnated substrate is irradiated with a light beam at an ordinary temperature for 0.1W60min to form a B-staged resin.
COPYRIGHT: (C)1982,JPO&Japio
JP56021164A 1981-02-13 1981-02-13 Production of heat-resistant prepreg Granted JPS57135834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56021164A JPS57135834A (en) 1981-02-13 1981-02-13 Production of heat-resistant prepreg

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56021164A JPS57135834A (en) 1981-02-13 1981-02-13 Production of heat-resistant prepreg

Publications (2)

Publication Number Publication Date
JPS57135834A true JPS57135834A (en) 1982-08-21
JPS6234252B2 JPS6234252B2 (en) 1987-07-25

Family

ID=12047266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56021164A Granted JPS57135834A (en) 1981-02-13 1981-02-13 Production of heat-resistant prepreg

Country Status (1)

Country Link
JP (1) JPS57135834A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016031926A (en) * 2014-07-25 2016-03-07 海鴻電気有限公司 Impregnation process for insulation paper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5072967A (en) * 1973-10-30 1975-06-16
JPS51132280A (en) * 1975-05-14 1976-11-17 Hitachi Ltd Impregnation and hardening of epoxy resin varnish into aromatic polyamide fiber base layer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5072967A (en) * 1973-10-30 1975-06-16
JPS51132280A (en) * 1975-05-14 1976-11-17 Hitachi Ltd Impregnation and hardening of epoxy resin varnish into aromatic polyamide fiber base layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016031926A (en) * 2014-07-25 2016-03-07 海鴻電気有限公司 Impregnation process for insulation paper

Also Published As

Publication number Publication date
JPS6234252B2 (en) 1987-07-25

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