PREPREG SHEET AND FIBER-REINFORCED RESIN TUBULAR FORM

PURPOSE:To obtain a lightweight prepreg with natural fibers as reinforcing material, having practically sufficient mechanical strength and modulus, excellent in impact resistance and vibration damping, moldable into thin-walled or small- diameter tubular forms, and high in producibility. CONSTITUTIO...

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Bibliographische Detailangaben
Hauptverfasser:	NISHIU MASAMICHI, FUJIMOTO KAZUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a lightweight prepreg with natural fibers as reinforcing material, having practically sufficient mechanical strength and modulus, excellent in impact resistance and vibration damping, moldable into thin-walled or small- diameter tubular forms, and high in producibility. CONSTITUTION:Firstly, an epoxy resin composition is prepared by incorporating Japanese paper with 30 pts.wt. of a bisphenol A-type epoxy resin, 70 pts.wt. of bisphenol F-type epoxy resin, 4 pts.wt. of dicyanamide (DICY) as a curing agent and 4 pts.wt. of dichlorophenyl dimethylurea (DCMU) as an accelerator. Next, a mold releasing paper is coated with this composition followed by laminating with paper and then hot contact bonding with a press roller to effect impregnating the Japanese paper with the resin composition, thus the aimed prepreg is obtained.