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SiO2 나노입자의 불꽃반응에 의한 제조와 Epoxy Molding Compound에의 응용
Synthesis of Silica Nanoparticles by Flame REaction and Application to the Epoxy Molding Compound
한구자원연구소 활용연구부, 대전
Minerals Utilization and Materials Division, Korea Institute of Geology, Mining and Materials, Taejon, Korea
hdjang@kigam.re.kr
HWAHAK KONGHAK, April 2000, 38(2), 244-248(5), NONE
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Abstract
불꽃반응을 이용한 bench 규모 에어로솔 반응기를 사용하여 Tetraethylorthosilicate(TEOS)로부터 실리카 나노입자들을 개조하였다. 반응변수의 조절에 의해 서로 다른 평균입자크기를 가지는 실리카 나노입자들을 제조한 후 Epoxy Molding Compound(EMC) 제조시 주입하여 EMC의 물리적 특성변화를 고찰하였다. 확산영 불꽃반응기에서 TEOS의 중요한 물리적 특성인 spiral flow(S/F)와 bleed/flash(B/F)를 선정하여 그 특성 변화들을 살펴보았다. 본 연구에서 제조한 실리카 나노입자 중 평균입자크기가 20nm인 분말이 생산현장에서 EMC 제조시 사용되는 SiCl4로부터 제조된 실리카 나노입자를 대치할 수 있는 물리적 특성을 나타내었다.
Silica nanoparticles were prepared from TEOS by the bench-scale aerosol reactor using the flame reaction. Silica nanoparticles having different average particle diameters were applied to measure the physical properties of Epoxy Molding Compound. Silica nanoparticles ranged from 10 to 40 nm were synthesized by changing the TEOS concentration in the diffusion flame. Spiral flow and bleed/flash of EMC were chosen as important physical properties which depend on the average particle size of silica nanoparticles. the results showed that silica particles less than 20 nanometer from the present study were very compatible with the commercial silica nanoparticles from SiCl4 for the preparation of the EMC.
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