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Supercritical fluid cleaning - McHardy J.

McHardy J., Sawan P.S. Supercritical fluid cleaning - Noyes publications, 1998. - 304 p.
Download (direct link): spercrificalfluidcleaning1998.pdf
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For over a century, the unique properties of the supercritical state have enticed scientists and engineers to explain and harness them. Yet even today, the science and technology of SCFs remains far from mature and opportunities abound for spectacular returns on research investments. In the final analysis, our book will have met its objective if the reader is persuaded to join the quest for a deeper understanding of this intriguing field.
El Segundo, CA John McHardy
September, 1997
Lowell, MA September, 1997
Samuel P. Sawan
Contents
1 The Supercritical State...........................1
Gurusamy Manivannan and Samuel P. Sawan
1.0 INTRODUCTION.................................1
2.0 PHYSICAL TRANSFORMATIONS OF
PURE SUBSTANCES................................3
3.0 CRITICAL CONSTANTS...........................5
4.0 CRITICAL AND BOILING POINTS..................7
5.0 SUPERCRITICAL STATE..........................9
6.0 SOLVENTS AND ANTISOLVENTS....................9
7.0 SOLUBILITY ISSUES OF SUPERCRITICAL FLUIDS..10
8.0 HILDEBRAND SOLUBILITY PARAMETER............12
9.0 CARBON DIOXIDE.............................13
10.0 CANDIDATES FOR SUPERCRITICAL FLUIDS........16
11.0 CONCLUSIONS................................19
REFERENCES ......................................20
2 Solubility in Supercritical Fluid Cleaning.......22
Kenneth E. Laintz, L. Dale Sivils, and W. Dale Spall
ABSTRACT .................................22
1.0 INTRODUCTION................................23
2.0 CONTAMINANT SOLUBILITY...............................25
3.0 MODELS FOR CLEANING..................................28
4.0 CONCLUSION...........................................36
REFERENCES ...............................................37
3 Design for Cleanability................................38
Ramamurthy Nagarajan
1.0 INTRODUCTION.........................................38
2.0 PROCESS DESIGN GUIDELINES............................39
2.1 Use of Water-Soluble Cutting Fluids...............40
2.2 Minimization of WIP, Implementation of CFM........43
2.3 Rinsing after Machining...........................44
2.4 Parts Handling after Final Clean..................45
3.0 CONCLUSIONS..........................................46
APPENDIX 1: GUIDELINES FOR DESIGN OF PARTS FOR
CLEANABILITY..........................................47
A1.1 Introduction.....................................47
A1.2 DFM/DFC Compatibility............................48
A 1.3 Guidelines for Design for Cleanability..........49
References (for Appendix 1)...........................55
APPENDIX 2: VENDOR PROCESS CONTAMINATION
CHECKLIST ............................................55
A2.1 Receiving/Inspection (R/I) at the Vendor.........55
A2.2 Manufacturing....................................56
A2.3 Degreasing/Cleaning/Drying.......................60
A2.4 Final Inspection.................................63
A2.5 Storage .........................................65
A2.6 Shipping ........................................66
A2.7 Employees........................................67
A2.8 Management.......................................68
4 Dynamics Of Particle Removal By Supercritical
Carbon Dioxide..........................................70
Shirish M. Chitanvis, Chris W. Patterson, W. Dale Spall, and Kenneth E. Laintz
ABSTRACT .......................................70
1.0 INTRODUCTION.........................................70
2.0 THE BOUNDARY LAYER IN TURBULENT FLOW
OVER A PLATE..........................................73
3.0 ADHESIVE FORCES......................................77
4.0 SUPERCRITICAL CARBON DIOXIDE......................80
5.0 CONCLUSIONS.......................................85
REFERENCES ...........................................86
5 Surfactants and Microemulsions in
Supercritical Fluids..................................87
Kevin Jackson and John L. Fulton
ABSTRACT .....................................87
1.0 INTRODUCTION......................................88
2.0 MICROEMULSION STRUCTURE...........................90
3.0 MICROEMULSIONS IN SUPERCRITICAL FLUIDS..........94
4.0 MICROEMULSIONS IN C02...........................104
5.0 SUPERCRITICAL MICROEMULSION CLEANING
PROCESSES ...................................... 107
6.0 KINETICS OF CLEANING............................112
7.0 RECENT DEVELOPMENTS.............................115
8.0 CONCLUSIONS.....................................116
ACKNOWLEDGMENT.......................................117
REFERENCES ..........................................117
6 Evaluation of Supercritical Fluid Interactions with
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