作者: Toshio Kitsu , Kazumitsu Enomoto , Yuuzi Washio , Masahide Ogawa , Kiyoshi Abe
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摘要: An amorphous silica-type filler which has an average primary particle diameter (D1) of from 100 to 270 nm as observed by a scanning-type electron microscope, apparent specific gravity (JIS K 6220 method) 0.24 0.55 g/cm³, BET method surface area 200 500 m²/g, silica elementary (DO) calculated the 5 15 nm, and agglomeration degree (DA), defined equation DA = D1/DO, 10 50.