화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.11, No.8, 923-928, December, 2000
Export Citation
컴퓨터 하드디스크 윤활제로 사용되는 Perfluoropolyethers : Cyclotriphosphazene (X-100) 혼합물의 분해 특성에 대한 연구
Degradation Behavior of Perfluoropolyethers/Cyclotriphosphazene(X-100) mixture for Computer Hard Disk Lubricant
천상욱, 박성하1, 김환기, 강호종1, †
  • 단국대학교 화학공학과, 서울 140-714
  • 1단국대학교 기능성 고분자 신소재 연구센터, 고분자공학과, 서울 140-714
Sang wook Chun, Sungha Park1, Whanki Kim, and Hojong Kang1, †
  • Department of Chemical Engineering, Dankook University, Seoul 140-714, Korea
  • 1Center for Advanced Fucntional Polymers, Department of Polymer Science & Engineering, Dankook University, Seoul 140-714, Korea
E-mail:
초록
컴퓨터 하드디스크 윤활제로 사용되고 있는 perfluoropolyethers (PFPEs)/cyclotriphosphazene (X-100) 혼합물의 분해 특성에 대하여 고찰하였다. PFPEs에 알루미나(Al2O3)가 첨가되면 Al2O3는 PFPEs와 옥사이드의 할라이드화(oxide to halide) 반응에 의해 알루미늄플로라이드(AlF3)로 전환되고 이는 PFPEs에 루이스산으로 작용하여 분해를 유발시킴을 알 수 있었다. 그러나 PFPEs/Al2O3 혼합물에 X-100 포스파젠을 첨가하면 포스파젠 첨가제가 AlF3의 활성도를 떨어뜨리는 루이스 염으로 작용하여 PFPEs의 분해를 억제시켰다. PFPEs의 열안정성은 Al2O3의 함량이 감소하고 포스타젠 첨가제의 함량이 증가함에 따라 보다 우수해짐을 알 수 있었다. X-100은 현재 사용되고 있는 포스파젠 첨가제인 X-IP에 비하여 분해 억제능이 다소 떨어지나 상대적으로 PFPEs와의 우수한 상용성에 의하여 PFPEs의 윤활 첨가제로서 사용 가능성을 확인할 수 있었다.
The degadation behavior of perfluoropolyethers (PFPEs)/mycoltriphosphazene (X-100), which is currently being used as a computer hard disk lubricant, has been investigated. It was found that the alumina (Al2O3) in PFPEs led to the degradation of PFPEs, This was known as Lewis acid disproportionation by aluminum halide (AlF3) which was mainly formed by oxide-to-halide reaction between Al2O3 and PFPEs, Adding the phosphazene additives to PFPEs/Al2O3 compounds caused phosphazene additives to act as a Lewis base which is able to passivate the Lewis acid. As the result, the degradation of PFPEs has been dramatically prevented. Thermal stabilization of PFPEs became predominant with decreasing alumina content and increasing phosphazene additive. It was found that X-100 can be used as an additive for PFPEs since it has a better compatibility with PFPEs than X-1P.
Keywords:Perfluoropolyethers;Cyclotriphosphazene;Alumina (Al2O3);Lewis acid disproportionation;Phosphazene additives
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