PREPREG AND METHOD FOR PRODUCING SAME

The present application discloses a prepreg roll comprising a continuous prepreg that is wound plural turns into a roll shape to form a multilayer roll, wherein the prepegs that constitute adjacent layers in the prepeg roll are in contact with each other, wherein the prepreg comprises reinforcing fi...

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Bibliographic Details
Main Authors MIURA Teppei, SAMEJIMA Tadao, KUSUMI Masaki, MORI Shouhei, KANEKO Manabu, NUMATA Kiharu, ICHINO Masahiro, MIYAUCHI Akira, TERANISHI Takuya
Format Patent
LanguageEnglish
French
German
Published 30.10.2019
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:The present application discloses a prepreg roll comprising a continuous prepreg that is wound plural turns into a roll shape to form a multilayer roll, wherein the prepegs that constitute adjacent layers in the prepeg roll are in contact with each other, wherein the prepreg comprises reinforcing fibers and a matrix resin composition, wherein the matrix resin composition comprises: an epoxy resin, a radical polymerizable unsaturated compound, an epoxy resin curing agent, a polymerization initiator that generates a radical, and a polymer formed by radical polymerization of the radical polymerizable unsaturated compound. The prepreg is in a sheet form or a tape form, and in at least one surface of the prepreg, the tack value measured at a pressing pressure of 40 kPa is 70 kPa or less, while the tack value measured at a pressing pressure of 80 kPa is 150 kPa or more.
Bibliography:Application Number: EP20130835598