RADIATION-RESISTANT VINYL CHLORIDE RESIN COMPOSITION, AND FLEXIBLE HOSE AND TUBE CONTAINING RADIATION-RESISTANT VINYL CHLORIDE RESIN COMPOSITION

PROBLEM TO BE SOLVED: To provide a soft vinyl chloride resin composition in which radiation degradation in absorption dose of γ rays of Mgy-order is suppressed, and to provide a flexible hose and a flexible tube using the resin composition in which degradation by radiation rays is suppressed.SOLUTIO...

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Bibliographische Detailangaben
1. Verfasser:	SHIMA TSUGUNORI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a soft vinyl chloride resin composition in which radiation degradation in absorption dose of γ rays of Mgy-order is suppressed, and to provide a flexible hose and a flexible tube using the resin composition in which degradation by radiation rays is suppressed.SOLUTION: A radiation-resistant vinyl chloride resin composition contains 100 pts.wt. of a vinyl chloride resin and 20 pts.wt. or more and 110 pts.wt. or less of a benzoic acid-based plasticizer, and has a duro A hardness before irradiation with γ rays of 50 HDA or more and 95 HDA or less. The radiation-resistant vinyl chloride resin composition preferably contains 1 pt.wt. or more and 15 pts.wt. or less of a phenyl ether-based oil and fat. The radiation-resistant vinyl chloride resin composition preferably contains 10 pts.wt. or more and 50 pts.wt. or less of carbon black or graphite powder.SELECTED DRAWING: Figure 1 【課題】軟質塩化ビニル樹脂組成物の、γ線の吸収線量がメガグレイのオーダーにおける放射線劣化を抑制する。当該樹脂組成物を用いて、放射線による劣化が抑制された可撓性ホースや可撓性チューブを提供する。【解決手段】耐放射線塩化ビニル樹脂組成物は、塩化ビニル樹脂１００重量部と、安息香酸系可塑剤２０重量部以上１１０重量部以下を含有すると共に、γ線照射前のデュロＡ硬度が５０ＨＤＡ以上９５ＨＤＡ以下である。さらにフェニルエーテル系油脂１重量部以上１５重量部以下を含有することが好ましい。また、さらに、カーボンブラックまたは黒鉛粉末１０重量部以上５０重量部以下を含有することが好ましい。【選択図】図１