| 摘要 |
PURPOSE:To obtain a screw-shaped molding being light weight, having excellent corrosion resistance, chemical resistance and electric insulating property as well as high strength and hardness and being simply moldable by using material consisting of high nitrile resin. CONSTITUTION:A screw-shaped molding consists of high-nitrile resin. The high nitrile resin used here is a copolymer consisting mainly of unsaturated nitrile such as acrylonitrile or methacrylonitrile and includes more than 50wt% of acrylonitrile. Besides, a mixture of the high nitrile resin with a rubber polymer such as a butadiene-acrylonitrile copolymer, an isoprene-acrylonitrile copolymer, a butadiene-styrene copolymer, polybutadiene, and polyisoprene and a graft copolymer of acrylonitrile and a comonomer graft-copolymerized under the existence of these rubbery polymers can be used. The molding can be easily prepared because the raw material is high nitrile resin.
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