정밀 화학 및 전자공업원료 제조기술 연구
상세정보
| 자료유형 | KIGAM 보고서 |
|---|---|
| 서명 | 정밀 화학 및 전자공업원료 제조기술 연구 |
| 저자 | 최상근 |
| 언어 | KOR |
| 청구기호 | KR-99-R-05-2000-R |
| 발행사항 | 한국자원연구소, 2000 |
| 초록 | 전자공업원료 분야 : 고기능성 교질흑연제조 연구 : (1) 1차 선행기술인 초미립(평균입도 0.8㎛) 흑연분체 제조 기술 개발. (2) 2차 선행기술인 gas 흡착에 의한 표면개질, 유기물 표면처리, 기능화된 분체의 특성 평가 주요 개발. (3) 습식 방법에 의한 수중 현탁액 중에서 표면개질 기술 개발. (4) 고분산성, 고윤활성 교질흑연 제조기술 개발. (5) 산업현장 적용을 위한 일반 공정 기술 개발. (6) 1, 2차 선행기술 산업화 완료 및 추진 중. (7) 본 연구에서 제조한 표면이 개질된 고기능성 초미립 흑연분체는 성일화학, 천미광유, 삼성전관 등에서 last user의 제품품질 test 및 수명 test를 중심으로 1차 현장 적용시험은 마친 상태이며, 2차 수명테스트가 진행 중이다. (8)특허 2건 등록 (제104856호, 제101885호). The research results are summarized as follows; (1) An investigation on ultra-fine grinding characteristics of crystalline graphite on dry base system by vacuum technique was performed. Natural graphite grinding is inefficient, since graphite has lamella structures which cause the high lubrication by slipping of the layers. However, this lamella structure causes difficulty in grinding. Interposition states of grinding obstacle materials(moisture, air or oxygen gas) between graphite layers was proposed. The removal of grinding obstacle materials by application of vacuum grinding was carried out with 325mesh of natural crystalline graphite samples. The particle size were able to be reduced to D(v. 0.5)=0.63㎛ depending on various vacuum and grinding conditions. (2) Apply for a utility model patent on grinding equipment (Pat. No 104956, 101885). (3) Self-design & construct of the manufacturing plant and transfer of technical know -how of them to related industries. (4) An investigation on the oxygen adsorption characteristics of ultrafine crystalline graphite powders(produced by grinding in vacuum) by surface treatment using an attrition mill on dry base was carried out. Adsorbed oxygen on graphite surface was known to influence the suspension stability of graphite particles. It was found that the effective oxygen adsorption the surface of graphite particle by attrition milling was obtained in the range of 120 to 140℃ at such conditions at reaction time 30min and tip speed 4.5m/sec, under oxygen(or air) pressure lkgf/㎠. (5) Settlement of surface treatment technology with organic materials on graphite surface in order to improve dispersing characteristics in aqueous system(colloidal graphite). (6) Actual apply test in related company (Samsung Electronics Co. etc.) is under progress 전자공업원료 분야 : 정밀화학분야 : 운모, 견운모 : 5차년도 연구결과는 다음과 같다. 운모입자의 분체물성의 개선 및 기능성 부여를 통한 고부가가치화를 꾀하기 위한 목적으로, bio-ceramic으로 응용, 견운모 산물에 대한 표면 물성개질 및 박리형 분쇄물산의 제조를 위한 분쇄장치의 선택에서 강력한 전단력을 주어 판상의 광물인 견운모 산물의 자체 물성을 변환시키지 않고, 입자의 편리에 의한 판상의 성질을 살린 물리적 표면개질 처리산물인 기능성 제조의 복합화 및 기능성 물질의 물성 평가에서 가장 주요한 사항 중의 하나인 분산성 실험을 실시하여, 분산체의 종류에 따른 미세 입자들의 응집체 형성 속도 및 슬러리의 분산제 특성에 관하여 연구하였다. Result and Study: 1) Sericite and Mica sample are taken from Yucheon, Hwengsung, Ohsan, Saerona, Buyeo and silim. 2) These are various chemical compositions and sericite samples about 16.0-22.0% Al₂O₃, 4.7-6.6% K₂O and 55.5-68.0% SiO₂ and Muscovite samples about 14.0-25.0% Al₂O₃, 5.0-6.4% K₂O and 56.5-76.0% SiO₂. 3) The concentrated of mineral processing, to achieved sericite concentrates about 30.0% Al₂O₃ up, 9% K₂0 up and 1.5% Fe₂O₃less and Muscovite concentrates about 32.0% Al₂O₃ up, 10% K₂0 up and 46% Fe₂O₃ less. 4) The result of scale-up test shows that sericite concentrate obtained about 31.91% Al₂O₃, 9.76% K₂0 and 1.45% Fe₂O₃. The process of grinding and classification is obtained fine mica mean size of 2.39㎛ such as 3.5 wt% yield. 5) The dry process of surface modification has been achieved up to 91 for whiteness as 20 min ground samples. 6) Polymer microcapsulation was carried out on the mica surface. The results are excellent hydrophobic properties which is applied cosmetics industry. 7) The results shows a possibility of producing nanosize composite materials of 200-500nm and emitting test on purified sericite appears 0.914-0.915 intensity in wave length of 5-20㎛. 8) The delamination effect of surface coated sericite and Muscovite by using Theta-composer. 9) Results of measurement of zeta potential(ξ) and viscosity(η) have shown that for inorganic ion dispersants, the absolute zeta potential value was maximum when the viscosity of suspensions was minimum, and for polymer dispersants, the viscosity of suspensions decreased and then increased at critical concentration point though absolute zeta potential value of suspensions increased over critical concentration of dispersants |
| 페이지 | 340 p. |
| 키워드 | 고기능성, 교질흑연, 흑연, 전자공업, 정밀화학, 운모, 견운모 |
| 원문 | 다운로드 |
유형별 보고서
- 418view
- 1download
