Studies on the Surface Treatment of Kaolin Filler(Part I) -Fundamental Properties of Kaolin Filler and Treatment Effect on Physical Properties of Rubbers-

Kaolin 충전제(充塡劑) 표면처리(表面處理)에 관(關)한 연구(硏究)(제1보(第1報)) -Kaolin의 기초성상(基礎性狀) 및 고무물성(物性)에 대(對)한 처리효과(處理效果)-

  • Kwon, Dong-Yong (Physical Testing Division, National Industrial Research Institute) ;
  • Hong, Sung-Il (Department of Textile Engineering, College of Engineering, Seoul National University) ;
  • Lee, Yong-Moo (Physical Testing Division, National Industrial Research Institute)
  • 권동용 (국립공업시험원 종합물성시험과) ;
  • 홍성일 (서울대학교 공과대학 섬유공학과) ;
  • 이용무 (국립공업시험원 종합물성시험과)
  • Published : 1983.09.30


Fundamental properties and surface treatment effects of domestic kaolin calcined at higher temperature were studied to develop reinforcing fillers for rubbers. The results obtained are as follows: (i) X-ray diffraction and scanning electron microscopy studies revealed kaolinite as a major constituent of the raw kaolin used in this study. (ii) Physical properties of natural rubber vulcanizates compounded with the calcined kaolin fillers treated with poly(maleic anhydride) and sodium polyphosphate are favorably improved. Particularly, the kaolin filler treated with sodium polyphosphate(designated as PT series) shows excellent physical properties compared with hydrated silica.