軽質炭酸カルシウムの表面処理について

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タイトル別名
  • STUDIES ON THE SURFACE-MODIFICATION OF CALCIUM CARBONATE AS REINFORCING FILLER (REPORT I)
  • ケイシツ タンサン カルシウム ノ ヒョウメン ショリ ニ ツイテ 1
  • (第1報) SBRラテックスによる表面処理

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In order to obtain calcium carbonate which is combined chemically to SBR, we tried to cover a part of surfaces of calcium carbonate with SBR latex which was perliminarrily treated with thiolacids.<br>A typical example is as follows; SBR latex was treated with thioglycolacid under several conditions, and was reacted with calcium hydroxide. Into the reaction product a stream of carbon dioxide was introduced.<br>In these ways, much better reinforcing fillers compared with any of calicium carbonate treated by known agents were obtained for SBR. For example, 300% modulus was about twice, and tensile strenght at break was triple as untreated calcium carbonate.

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