:I. Structure and Product Properties
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概要
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A high content of magnesium hydroxide was filled into a polypropylene (PP)-type resin containing maleated PP-type elastomer PER (MPER) and a compound was prepared. The structure and properties of the compound were measured and compared with those of a compound without MPER, compounds with maleated soft resins besides MPER, and a flexible polyvinyl chloride (PVC) resin. This compound shows comparable or even superior properties to flexible PVC not only in flammability but also in flexibility, abrasion resistance, rubbery properties and electric properties. Since MPER is more compatible with the PP-type resin than other maleated soft resins, the compound with the former is superior to the compounds with the latter. These superior properties are assumed to come from ionic crosslinking, which is shown to exist by the observations of a carboxylic acid ion absorption peak in the infrared absorption spectrum at 1580cm-1, of much gel remaining after p-xylene extraction, and by a high melt viscosity and low die swell ratio. Because of these excellent properties, the ionically crosslinked compound is expected to be widely used in cable coating, leather cloth, tape, etc. as a substitute for flexible PVC.
- 一般社団法人 プラスチック成形加工学会の論文
一般社団法人 プラスチック成形加工学会 | 論文
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- Development of Injection Molding System on Large Size Vertical Clamping Molding Machine