KR970006167A - 침강 실리카, 이의 제조방법 및 용도 - Google Patents

침강 실리카, 이의 제조방법 및 용도 Download PDF

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KR970006167A
KR970006167A KR1019960030530A KR19960030530A KR970006167A KR 970006167 A KR970006167 A KR 970006167A KR 1019960030530 A KR1019960030530 A KR 1019960030530A KR 19960030530 A KR19960030530 A KR 19960030530A KR 970006167 A KR970006167 A KR 970006167A
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귄터 튀르크
게롤트 슈미트
무스타파 시레이
칼 마이어
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메르크 볼프강ㆍ베버 볼프강
데구사 아크티엔게젤샤프트
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Abstract

본 발명은 BET 표면적(DIN 66131)이 100 내지 130㎡/g이고, DBP 흡수량(무수물) (DIN 53601 ASTM D 2414)이 275g/100g 이상이며, 건조시 손실량(DIN ISO 787/Ⅱ, 2h/105℃) (ASTM D 280, JIS K 5101/21)이 3.5 내지 5.5%이고, 앨핀(ALPINE) 공기 분사 시이브를 사용하는 과크기 측정 중량으로 63㎛를 초과하는 중량이 10.0중량% 이하이고, 150㎛를 초과하는 중량이 0.1중량% 이하이며, 250㎛를 초과하는 중량이 0.01중량% 이하인 물리적-화학적 데이터를 갖고, 물을 침전 용기에 도입하고 알칼리도 5 내지 15가 성취될 때까지 물유리를 가한 다음, 추가의 물유리와 황산을 동시에 가하고, 황산을 사용하여 교반하면서 pH 8.5로 되도록 침강 실리카 현탁액을 산성화한 다음, 중단시키고, 진한 황산을 사용하여 pH 4로 계속 산성화시킨 다음 분리하여 현탁액 중의 고형분 함량이 약 88g/ℓ인 침강 실리카를 분리하고 세척한 다음, 수득된 여과 케이크를 액화시키고, 분무 건조기로 건조시키고 분쇄시킴으로써 제조되는 침강 실리카에 관한 것이다.
침강 실리카는 전지 격리판 제조용으로 사용될 수 있다.

Description

침강 실리카, 이의 제조방법 및 용도
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (10)

  1. BET 표면적(DIN 66131)이 100 내지 130㎡/g이고, DBP 흡수량(무수물) (DIN 53601 ASTM D 2414)이 275g/100g 이상이며, 건조시 손실량(DIN ISO 787/Ⅱ, 2h/105℃) (ASTM D 280, JIS K 5101/21)이 3.5 내지 5.5%이고, 앨핀(ALPINE) 공기 분사 시이브를 사용하는 과크기 측정 중량으로서 63㎛를 초과하는 중량이 10.0중량% 이하이고, 150㎛를 초과하는 중량이 0.1중량% 이하이며, 250㎛를 초과하는 중량이 0.01중량% 이하인 물리적-화학적 데이터를 갖는 침강 실리카.
  2. 제1항에 있어서, 염화물 함량이 100ppm C1 이하인 침강 실리카.
  3. 90 내지 91℃의 온수를 교반하면서 침전 용기에 도입하고, SiO2:Na2O 모듈러스(SiO2=26.8중량%;Na2O=8.0중량%)가 3.34:1인 통 상의 물유리를 소정의 알칼리도가 성취될 때까지 가한 다음, 90분의 침강기간동안 온도를 일정하게 유지시키면서, 소정의 알칼리도를 유지시키도록 위와 동일한 물유리와 황산을 2개의 개별적인 장소에 동시에 가하고, 진한 황산을 사용하여 pH 8.5로 되도록 약 20분이내에 침강 실리카 현탁액을 산성화한 다음, 30분 동안 교반하면서 90 내지 91℃에서 침전반응을 중단시키고, 진한 황산을 사용하여 pH4로 계속 산성화시킨 다음, 현탁액 중의 고형분 함량이 약 88g/ℓ인 침강 실리카를 챔버 필터 프레스(chamber filter press)로 분리하고, 세척한 다음, 수득한 여과 케이크를 물과 기계적 전단력으로 액화시키고, 원심분리형 어토마이저가 장착된 분무 건조기로 건조시킨 다음, 롤러 밀(roller mill)로 분쇄시켜, 제1항에 따르는 BET 표면적(DIN 66131)이 100 내지 130㎡/g이고, DBP 흡수량(무수물) (DIN 53601 ASTM D 2414)이 275g/100g 이상이며, 건조시 손실량(DIN ISO 787/Ⅱ, 2h/105℃) (ASTM D 280, JIS K 5101/21)이 3.5 내지 5.5%이고, 앨핀(ALPINE) 공기 분사 시이브를 사용하는 과크기 측정 중량으로서 63㎛를 초과하는 중량이 10.0중량% 이하이고, 150㎛를 초과하는 중량이 0.1중량% 이하이며, 250㎛를 초과하는 중량이 0.01중량% 이하인 물리적-화학적 데이터를 갖는 침강 실리카를 제조하는 방법으로서, 침전 동안 알칼리도를 5 내지 15, 바람직하게는 7로 일정하게 유지시킴을 특징으로 하는 방법.
  4. 제3항에 있어서, 작동이 분무 건조되는 동안 분무되는 실리카 공급물의 고형분 함량이 16 내지 20%, 바람직하게는 18%이고 원심분리형 어토마이저의 속도가 10,000 내지 12,000rpm이며 고온 가스의 유입 온도가 700 내지 750℃이고 유출 온도가 90 내지 120℃인 조건하에 수행됨을 특징으로 하는 방법.
  5. 제3항 또는 제4항에 있어서, 크로스플로우 밀(crossflow mill)이 롤러 밀 대신에 분쇄용으로 사용됨을 특징으로 하는 방법.
  6. 제3항에 있어서, 필터 프레스에 의해 분리된 여과 케이크가, 분쇄된 최종 생성물의 염화물 함량이 100ppm 이하로 될 때까지 저염화물수(염화물 20ppm 이하)로, 바람직하게는 탈이온수 또는 축합물로 세정됨을 특징으로 하는 방법.
  7. 제3항에 있어서, 스핀 플래쉬 건조기가 분무 건조기 대신에 사용됨을 특징으로 하는 방법.
  8. 제7항에 있어서, 스핀 플래쉬 건조된 실리카의 분쇄가 필요없음을 특징으로 하는 방법.
  9. 총 다공도가 64% 이상이고, 37% 전지산에의 24시간 침지 후의 저항이 0.6mOhm.inch2/ mil 이하이며 잔류오일 함량이 12 내지 14%인 탄분 함량이 68% 이상임을 특징으로 하는, 납-산을 기본으로 하는 산업용 전지를 위한 폴리에틸렌-실리카 전지 격리판에 있어서 제1항 또는 제2항에 따르는 실리카의 용도.
  10. 8 내지 10mil 격리판이 잔류 오일 함량이 12 내지 14%이고 저항 0.6mOhm.inch2/ mil임을 특징으로 하는, 실리카:폴리에틸렌의 비가 2.5:1 내지 3.5:1이고 납-산을 기본으로 하는 출발 전지를 위한 실리카-전지 격리판에 있어서 제1항 또는 제2항에 따르는 실리카의 용도.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960030530A 1995-07-26 1996-07-26 침강 실리카, 이의 제조방법 및 용도 KR100222348B1 (ko)

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EP0755899A2 (de) 1997-01-29
JP2978118B2 (ja) 1999-11-15
KR100222348B1 (ko) 1999-10-01
ZA966343B (en) 1997-02-11
CN1148567A (zh) 1997-04-30
ATE182125T1 (de) 1999-07-15
US6077466A (en) 2000-06-20
US5851502A (en) 1998-12-22
ES2135820T3 (es) 1999-11-01
TR199600604A2 (tr) 1997-02-21
ID17208A (id) 1997-12-11
EP0755899B1 (de) 1999-07-14
DE19527278A1 (de) 1997-01-30
MX9602784A (es) 1997-06-28
CN1052959C (zh) 2000-05-31
EP0755899A3 (de) 1997-05-28
PL315419A1 (en) 1997-02-03
JPH09118516A (ja) 1997-05-06
DE59602429D1 (de) 1999-08-19

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