Clean Technology, Vol.13, No.2, 143-150, June, 2007
탄화수소계 배합세정제에서의 세정성 영향인자 연구
Influencing Factors on Cleaning Ability in the Formulated Hydrocarbon-based Cleaning Agents
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초록
본 연구에서는 플러스, 솔더, 그리스와 같은 오염물질을 효과적으로 세정하기 위하여 글리콜 에테르계, 파라핀계 및 실록산계 물질을 배합한 탄화수소계 세정제를 제조하고 습윤지수, 아닐린점 그리고 용해도 매개변수 등의 세정성능에 대한 영향을 조사하였다. 탄화수소계 세정제의 배합은 단일물질의 물성에 기초하여 제조되었다. 제조된 세정제의 습윤지수와 아닐린점은 실험을 통하여 측정하였으며 용해도 매개변수는 Hansen의 추정식을 사용하여 계산하였다. 본 연구에서는 플럭스, 솔더, 그리스의 오염물을 사용하여 세정제의 세정성능 평가를 진행하였다. 실험결과 배합 세정제의 세정성능이 플럭스, 솔더, 그리스의 오염물 세정에 매우 우수하게 나타났으며 오염물에 따라 세정효율에 영향을 미치는 변수가 다르게 나타났다. 플럭스 세정에서는 플럭스(21.3MPa1/2)와 유사한 용해도 매개변수의 MC(20.3MPa1/2), DF-1(24.2MPa1/2), DF-2(21.5MPa1/2)세정제가 3분 이내에 100%의 세정효율을 보였다. 그리고 솔더 세정에서는 -20℃ 이하의 아닐린점인 CFC-113, MC, 1,1,1-TCE가 높은 세정효율을 보였다. 그리스 세정에서는 그리스의 용해도 매개변수(15.0~17.0 MPa1/2)와 가장 유사한 DG-1 세정제(16.2 MPa1/2)와 DG-2 세정제(15.5 MPa1/2)의 세정효율이 비교적 저조하였고 습윤지수가 크고 아닐린점이 낮은 CFC-113과 MC가 세정효율이 우수하였다. 본 연구를 통해 플럭스, 솔더, 그리스의 오염물을 세정하기 위해 글리콜 에테르계, 파라핀계 및 실록산계 물질을 알맞게 배합하여 CFC-113, MC, 1,1,1-TCE와 같은 규제물질을 대체할 수 있는 탄화수소계 세정제를 개발할 수 있었다. 그리고 습유지수, 아닐린점, 용해도 매개변수 등과 같은 세정성 영향을 검토하여 비수계 세정제의 세정성능을 예측하고 세정제의 배합에 적용할 수 있었다.
The objective of this study is to develop hydrocarbon-based cleaning agents by blending paraffins, glycol ethers and siloxanes in oder to effectively clean contaminants such as flux, solder and grease. And the effet of cleaning ability by wetting index, aniline points and solubility parameter of the formulated hydrocarbon-based cleaning agents were studied in this work. The formulated hydrocarbon-based cleaning agents were prepared on the base of physical properties of their individual components. Wetting indexes and aniline points of their were measured through experiments and solubility parameters of their were calculated based on the Hansen's equation. In this study, evaluation of cleaning ability by cleaning agents were carried out using contaminants such as flux, solder, and grease. The experimental results showed that the cleaning ability of the formulated cleaning agents was excellent in cleaning contaminants such as flux, solder and grease and that the influencing parameters on their cleaning efficiency were found to be different according to contaminant types. MC(20.3MPa1/2), DF-1(24.2MPA1/2)and DF-1(21.5MPa1/2) with similar solubility parameter as flux (21.3MPa1/2) showed 100% cleaning efficiency within 3 minutes in flux cleaning. And CFC-113, MC and 1,1,1-TCE with low aniline point less than -20℃ showed excellent cleaning efficiency in solder cleaning. DG-1(16.2 MPa1/2) and DG-2(15.5 MPa1/2) with similar solubility parameter as grease(15.0~17.0 MPa1/2) showed relatively low cleaning efficiency of grease, but CFC-113 and MC with high wetting index and low aniline point showed good cleaning efficiency i ngrease cleaning. As a result of this study, the hydrocarbon-based cleaning agents alternative to regulated cleaning agents such as CFC-113, 1,1,1-TCE and MC were able to be developed through properly blending paraffins, glycol ethers and siloxanes for cleaning flux, solder and grease. And it can be shown that various influencing parameters of cleaning efficiency such as wetting index, aniline point, solubility parameter and etc. of the non-aqueous cleaning agent should be reviewed for prediction of their cleaning ability and can be applied to formulation of cleaning agents.
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