METHOD FOR PRODUCING PREPREG

• Main Authors: MIYOSHI YUKI, TANNO NENDAI, SATO KENTA, KIYOMITSU CHISA, YOSHIZAKI KAZUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 24.08.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a method for producing prepreg capable of enhancing a quality of prepreg.SOLUTION: A method for producing prepreg is a method for producing prepreg obtained by impregnating a sheet-like fiber substrate 11 formed of a large number of fibers with a resin composition. The production method includes an immersion step of immersing the fiber substrate 11 in a resin varnish 12' obtained by mixing the resin composition and a solvent, and impregnating the fiber substrate 11 with the resin varnish 12'. In the immersion step, the fiber substrate 11 is impregnated with the resin varnish 12' while applying an external force to the fiber substrate 11.SELECTED DRAWING: Figure 2 【課題】プリプレグの品質の向上を図ることができるプリプレグの製造方法を提供すること。【解決手段】プリプレグの製造方法は、多数本の繊維で構成されたシート状をなす繊維基材１１に樹脂組成物を含浸させてなるプリプレグを製造する方法である。この製造方法は、樹脂組成物と溶媒とを混合してなる樹脂ワニス１２'中に、繊維基材１１を浸漬させ、繊維基材１１に樹脂ワニス１２'を含浸させる浸漬工程を有している。そして、浸漬工程では、繊維基材１１に外力を付与しつつ、繊維基材１１に樹脂ワニス１２'を含浸させる。【選択図】図２